New glass information

A, flat glass

Flat glass refers to no other processing of flat glass products, also known as white glass or net glass. According to the different production methods, can be divided into ordinary flat glass and float glass. Flat glass is the largest production volume of architectural glass, the most used one, mainly for windows and doors, play the role of lighting (visible light transmission ratio of 85% 90%), enclosure, thermal insulation, acoustic insulation, etc., but also is further processed into other technical glass of the original piece.

Flat glass can be divided into window glass and decorative glass according to its use. According to the national standard "ordinary flat glass" (GB4871-1995) and "float glass" (GB11614-89), the glass can be divided into the following specifications according to its thickness:

Introduction of pulling the production of ordinary flat glass: 2mm, 3mm, 4mm, 5mm four categories.

Float glass: 3mm, 4mm, 5mm, 6mm, 8mm10mm, 12mm seven categories.

Pulled glass produced by its aspect ratio shall not be greater than 2.5, of which 2, 3mm thick glass size shall not be less than 400mm × 300mm, 4, 5, 6mm thick glass shall not be less than 600mm × 400mm. float glass size is generally not less than 1,000mm × 1,200mm, 5, 6mm up to 3,000mm × 4,000mm.

Float glass: 3mm, 4mm, 5mm, 6mm 10mm, 12mm seven categories. /p>

In accordance with national standards, flat glass according to the quality of its appearance for grading, ordinary flat glass is divided into superior, first-class and second-class three grades. Float glass is divided into three grades of superior, first-class and qualified products. At the same time, the curvature of the glass shall not exceed 0.3%.

Ordinary flat glass to the standard box, the actual box and weight box measurement, thickness of 2mm flat glass, every 10m for 1 standard box; for other thickness specifications of flat glass, are required to standard box conversion. The actual box is used for the transportation of pieces of Lou's unit. Thickness of the glass is different per actual box of packaging volume is not the same. The actual box with the thickness of the cumulative number of square multiplied by the thickness factor can be derived from the number of standard boxes. Weight box refers to 2mm thickness of flat glass per standard box weight, other thick fang glass can be converted to a certain coefficient.

The use of flat glass has two aspects: 3 ~ 5mm flat glass is generally used directly for lighting windows and doors, 8 ~ 12mm flat glass can be used for partitioning. Another important use is as the original sheet of tempered, laminated, coated and insulating glass.

Two, safety glass

Safety glass is compared with ordinary glass, with high mechanical strength, impact resistance of the glass. Its main varieties are tempered glass, laminated glass, laminated glass and titanium glass. When safety glass is broken, the fragments will not hurt people, and also has the functions of anti-theft and fire prevention. According to the production of glass used in the original piece is not, safety glass has a certain decorative effect.

(A) tempered glass

Tempered glass is also known as reinforced glass. It is a physical or chemical method, the formation of a compressive stress layer on the surface of the glass, the glass itself has a high compressive strength, will not cause damage. When the glass is subjected to external forces, this pressure layer can be part of the tensile stress offset, to avoid glass cracking, although the tempered glass is in a larger state of internal tensile stress, but the internal defects of the glass does not exist, will not cause damage, so as to achieve the purpose of improving the strength of the glass.

Tempered glass is a flat glass secondary processing products, tempered glass processing can be divided into physical tempering method and chemical tempering method.

Physical tempered glass is also known as quenched tempered glass. It will be ordinary flat glass in the heating furnace heated to close to the softening temperature of the glass (600 ℃), through its own deformation to eliminate the internal stress, and then move the glass out of the heating furnace, and then use the multi-head nozzle will be high-pressure cold air blowing to both sides of the glass, so that it quickly and evenly cooled to room temperature, you can make the tempered glass. This kind of glass is in the internal tensile, external pressure stress state, once the local breakage occurs, the stress release will occur, the glass is broken into countless small pieces, these small fragments do not have sharp edges and corners, it is not easy to hurt people.

Chemical tempered glass is by changing the chemical composition of the surface of the glass to improve the strength of the glass, generally applying the ion exchange method for tempering. The method is to contain alkali metal ions of silicate glass, immersed in the molten state of lithium (Li +) salt, so that the glass surface layer of Na + or K + ions and Li + ions exchange, the surface of the formation of Li + ion-exchange layer, due to the expansion coefficient of Li + is smaller than the Na +, K + ions, thus in the cooling process resulting in the outer layer of contraction is small and the inner layer of the contraction of the larger, when cooled to room temperature, the glass will be When cooled to room temperature, the glass is also in the state of the inner layer is pulled, the outer layer is pressurized, the effect is similar to the physical tempered glass.

Tempered glass has high strength, its compressive strength can reach 125MPa or more, 4 to 5 times larger than ordinary glass; impact strength is also very high, measured by the steel ball method, 0.8kg steel ball from a height of 1.2m fall, the glass can remain intact.

Tempered glass elasticity than ordinary glass is much larger, a 1200mm × 350mm × 6mm tempered glass, the force can occur after the bending deflection of up to 100mm, when the force is removed, can still restore the original state, while the ordinary glass bending deformation can only be a few millimeters.

Good thermal stability, when subjected to rapid cooling and heating, not easy to crack is another feature of tempered glass. This is because the compressive stress of tempered glass can offset part of the tensile stress due to rapid cooling and heating. Toughened glass thermal shock, the maximum safe working temperature of 288 ℃, can withstand temperature changes of 204 ℃.

Tempered glass has good mechanical properties and thermal stability, so it is widely used in construction, transportation and other fields. Flat tempered glass is commonly used for building doors, windows, partition walls, curtain walls and windows, furniture, etc. Curved glass is commonly used in automobiles, trains and airplanes.

It should be noted that the use of tempered glass can not be cut, ground, the corners can not be touched and extruded, need to be selected according to the size of the ready-made specifications or specific design drawings into the processing of customized. Used for large areas of glass curtain wall glass in the tempered to be controlled, select the semi-tempered glass, that is, its stress can not be too large, in order to avoid the wind load caused by vibration and self-detonation.

According to the glass used in different pieces of glass, can be made of ordinary tempered glass, heat-absorbing tempered glass, color Ran tempered glass, tempered insulating glass and so on.

(2), laminated glass

Laminated glass, also known as shatterproof glass or steel wire glass. It is produced by calendering, that is, in the molten state of the glass will be pre-heated steel wire or wire mesh pressed into the middle of the glass, after annealing, cutting and become. The surface of laminated glass can be embossed or polished, and the color can be made colorless and transparent or colored.

The characteristics of laminated glass are safety and fire resistance. Due to the skeleton effect of wire mesh, the laminated glass not only improves the strength of the glass, but also when damaged by impact or sudden change in temperature, the fragments will not fly apart, avoiding the fragments from harming people. In the event of fire, when the flame is extended, laminated glass heat explosion, due to the role of the wire mesh, the glass can still remain fixed, isolated from the flame, so it is also known as fireproof glass.

According to the national industry standard JC433-91, the thickness of laminated glass is divided into: 6, 7, 10mm, the specification size is generally not less than 600mm × 400mm, not greater than 2000mm × 1200mm.

Currently, China's production of laminated glass is divided into laminated embossed glass and laminated polished glass two categories. The laminated glass can be used for building doors and windows, skylights, light roofs, balconies and other parts.

(C) laminated glass

Laminated glass is in two or more pieces of glass between the original sheet, with PVB (polyvinyl butyral) resin film, after heating, pressurized bonding and become flat or curved composite glass products. The raw glass used for laminated glass can be ordinary flat glass, float glass, tempered glass, colored glass, heat-absorbing glass or heat-reflective glass.

The number of layers of laminated glass are 2, 3, 5, 7 layers, up to 9 layers, for two layers of laminated glass, the thickness of the original piece of commonly used (mm): 2 + 3, 3 + 3, 3 + 5 and so on. The structure of laminated glass, as shown in Figure 8-1.

Laminated glass has good transparency, impact resistance is several times higher than the general flat glass, with multiple layers of ordinary glass or tempered glass composite, can be made into bulletproof glass. Due to the bonding effect of PVB film, even if the glass is broken, the debris will not fly and hurt people. Through the use of different original glass, laminated glass can also have durable, heat-resistant, moisture-resistant properties.

Laminated glass has a high degree of safety, and is generally used in construction as high-rise building doors, windows, skylights, and stores, banks, jewelry windows, partitions and so on.

(D) titanium glass

Titanium glass is also known as never broken iron armor foil glass. It is a new type of glass with titanium foil film tightly pasted on top of any kind of glass substrate so that it can be combined into a single piece. Titaniumized glass has a high resistance to breakage, high heat and ultraviolet resistance and other functions. Different substrate glass and different titanium foil film can be combined to form titaniumized glass with different color, performance and specifications. The common colors of titaniumized glass are: colorless transparent, teal, teal reflective, copper reflective and so on.

Three, energy-saving glass

Traditional glass used in buildings is mainly light, with the increase in the size of the building windows and doors, people on the windows and doors of the thermal insulation requirements have been correspondingly increased, energy-saving decorative glass is able to meet this requirement, energy-saving and decorative glass in one. Energy-saving decorative glass usually has a pleasing appearance of color, but also has a special light and heat absorption, transmission and reflection ability, with the building's exterior window glass curtain wall, can play a significant energy-saving effect, is now widely used in a variety of high-level buildings. Energy-saving decorative glass commonly used in buildings have heat-absorbing glass, heat-reflective glass and insulating glass.

(A) heat-absorbing glass

Heat-absorbing glass is able to absorb a large amount of infrared radiation, and maintain a high visible light transmittance of flat glass. Production of heat-absorbing glass has two methods: one is in the ordinary sodium calcium silicate glass raw materials to add a certain amount of heat-absorbing properties of the coloring agent; the other is sprayed on the surface of the flat glass of one or more layers of metal or metal oxide film and made.

Heat-absorbing glass has gray, teal, blue, green, bronze, bronze, pink and golden yellow. China is currently the main production of the first three colors of heat-absorbing glass. Thickness of 2, 3, 5, 6mm four. Heat-absorbing glass can also be further processed into polished, tempered, laminated or insulating glass.

Heat-absorbing glass compared with ordinary plate glass has the following characteristics:

⒈ absorbs solar heat. Such as 6mm thick transparent float glass, in the sun's total transmittance of heat for 84%, while the same conditions under the same conditions of heat-absorbing glass total transmittance of heat for 60%. Heat-absorbing glass of different colors and thicknesses, the degree of absorption of solar radiation heat is also different.

Peak absorbs the visible light of the sun, attenuates the intensity of sunlight, and plays the role of anti-glare.

3 has a certain degree of transparency, and can absorb a certain amount of ultraviolet radiation.

Because of these characteristics, heat-absorbing glass has been widely used in buildings, windows, doors, exterior walls, as well as used as cars, boats, windshields, etc., to play a role in heat insulation, anti-glare, lighting and decoration.

(B) heat-reflective glass

Heat-reflective glass is a high heat reflective capacity and maintain good light transmission of flat glass, it is the use of pyrolysis, vacuum evaporation, cathodic sputtering method, etc., in the glass surface coated with gold, silver, copper, aluminum, chromium, nickel, and iron and other metals or metal oxides film, or the use of ion-exchange methods such as electrofloatation to metal ions to replace the surface of the glass The original ions and the formation of heat-reflective film. Heat reflective glass, also known as mirror glass, gold, teal, gray, purple, brown, bronze and light blue and other colors.

The heat reflective glass has high heat reflectivity, such as 6mm thick float glass, the total reflected heat is only 16%, under the same conditions, heat-absorbing glass, the total reflected heat is 40%, while the heat reflective glass can be as high as 61%, and therefore it is often used to make insulating glass or laminated glass to increase its thermal insulation properties. Metalized heat-reflective glass also has a one-way image of the work.

Glass is quartz sand, soda ash, feldspar and limestone as the main raw materials, by melting, molding, cooling and curing of non-crystalline inorganic materials. It has a general material is difficult to have the transparency, has excellent mechanical properties and thermal properties. Moreover, with the needs of modern architectural development, it is constantly developing in the direction of multifunctionality. The deep processing products of glass can have the functions of controlling light, regulating temperature, preventing dry sound and improving architectural art and decoration. Glass is no longer just a light material, and is a modern building structure and decorative materials.

One, flat glass

Flat glass is a flat glass products without other processing, also known as white glass or net glass. According to different production methods, can be divided into ordinary plate glass and float glass. Flat glass is the largest production volume of architectural glass, the most used one, mainly for doors and windows, lighting (visible light transmission ratio of 85% 90%), enclosure, thermal insulation, sound insulation and other roles, but also further processed into other technical glass of the original piece.

Flat glass can be divided into window glass and decorative glass according to its use. According to the national standard "ordinary flat glass" (GB4871-1995) and "float glass" (GB11614-89), the glass can be divided into the following specifications according to its thickness:

Introduction of pulling the production of ordinary flat glass: 2mm, 3mm, 4mm, 5mm four categories.

Float glass: 3mm, 4mm, 5mm, 6mm, 8mm10mm, 12mm seven categories.

Pulled glass produced by its aspect ratio shall not be greater than 2.5, of which 2, 3mm thick glass size shall not be less than 400mm × 300mm, 4, 5, 6mm thick glass shall not be less than 600mm × 400mm. float glass size is generally not less than 1,000mm × 1,200mm, 5, 6mm up to 3,000mm × 4,000mm.

Float glass: 3mm, 4mm, 5mm, 6mm 10mm, 12mm seven categories. /p>

In accordance with national standards, flat glass according to the quality of its appearance for grading, ordinary flat glass is divided into superior, first-class and second-class three grades. Float glass is divided into three grades of superior, first-class and qualified products. At the same time, the curvature of the glass shall not exceed 0.3%.

Ordinary flat glass to the standard box, the actual box and weight box measurement, thickness of 2mm flat glass, every 10m for 1 standard box; for other thickness specifications of flat glass, are required to standard box conversion. The actual box is used for the transportation of pieces of Lou's unit. Thickness of the glass is different per actual box of packaging volume is not the same. The actual box with the thickness of the cumulative number of square multiplied by the thickness factor can be derived from the number of standard boxes. Weight box refers to 2mm thickness of flat glass per standard box weight, other thick fang glass can be converted to a certain coefficient.

The use of flat glass has two aspects: 3 ~ 5mm flat glass is generally used directly for lighting windows and doors, 8 ~ 12mm flat glass can be used for partitioning. Another important use is as the original sheet of tempered, laminated, coated and insulating glass.

Two, safety glass

Safety glass is compared with ordinary glass, with high mechanical strength, impact resistance of the glass. Its main varieties are tempered glass, laminated glass, laminated glass and titanium glass. When safety glass is broken, the fragments will not hurt people, and also has the functions of anti-theft and fire prevention. According to the production of glass used in the original piece is not, safety glass has a certain decorative effect.

(A) tempered glass

Tempered glass is also known as reinforced glass. It is a physical or chemical method, the formation of a compressive stress layer on the surface of the glass, the glass itself has a high compressive strength, will not cause damage. When the glass is subjected to external forces, this pressure layer can be part of the tensile stress offset, to avoid glass cracking, although the tempered glass is in a larger state of internal tensile stress, but the internal defects of the glass does not exist, will not cause damage, so as to achieve the purpose of improving the strength of the glass.

Tempered glass is a flat glass secondary processing products, tempered glass processing can be divided into physical tempering method and chemical tempering method.

Physical tempered glass is also known as quenched tempered glass. It will be ordinary flat glass in the heating furnace heated to close to the softening temperature of the glass (600 ℃), through its own deformation to eliminate the internal stress, and then move the glass out of the heating furnace, and then use the multi-head nozzle will be high-pressure cold air blowing to both sides of the glass, so that it quickly and evenly cooled to room temperature, you can make the tempered glass. This kind of glass is in the internal tensile, external pressure stress state, once the local breakage occurs, the stress release will occur, the glass is broken into countless small pieces, these small fragments do not have sharp edges and corners, it is not easy to hurt people.

Chemical tempered glass is by changing the chemical composition of the surface of the glass to improve the strength of the glass, generally applying the ion exchange method for tempering. The method is to contain alkali metal ions of silicate glass, immersed in the molten state of lithium (Li +) salt, so that the glass surface layer of Na + or K + ions and Li + ions exchange, the surface of the formation of Li + ion-exchange layer, due to the expansion coefficient of Li + is smaller than the Na +, K + ions, thus in the cooling process resulting in the outer layer of contraction is small and the inner layer of the contraction of the larger, when cooled to room temperature, the glass will be When cooled to room temperature, the glass is also in the state of the inner layer is pulled, the outer layer is pressurized, the effect is similar to physical tempered glass.

Tempered glass has high strength, its compressive strength can reach 125MPa or more, 4 to 5 times larger than ordinary glass; impact strength is also very high, measured by the steel ball method, 0.8kg steel ball from a height of 1.2m fall, the glass can remain intact.

Tempered glass elasticity than ordinary glass is much larger, a 1200mm × 350mm × 6mm tempered glass, the force can occur after the bending deflection of up to 100mm, when the force is removed, can still restore the original state, while the ordinary glass bending deformation can only be a few millimeters.

Good thermal stability, when subjected to rapid cooling and heating, not easy to crack is another feature of tempered glass. This is because the compressive stress of tempered glass can offset part of the tensile stress due to rapid cooling and heating. Toughened glass thermal shock, the maximum safe working temperature of 288 ℃, can withstand temperature changes of 204 ℃.

Tempered glass has good mechanical properties and thermal stability, so it is widely used in construction, transportation and other fields. Flat tempered glass is commonly used for building doors, windows, partition walls, curtain walls and windows, furniture, etc. Curved glass is commonly used in automobiles, trains and airplanes.

It should be noted that the use of tempered glass can not be cut, ground, the corners can not be touched and extruded, need to be selected according to the size of the ready-made specifications or specific design drawings into the processing of customized. Used for large areas of glass curtain wall glass in the tempered to be controlled, select the semi-tempered glass, that is, its stress can not be too large, in order to avoid the wind load caused by vibration and self-detonation.

According to the glass used in different pieces of glass, can be made of ordinary tempered glass, heat-absorbing tempered glass, color Ran tempered glass, tempered insulating glass and so on.

(C), laminated glass

Laminated glass, also known as shatterproof glass or steel wire glass. It is produced by calendering, that is, in the molten state of the glass will be pre-heated steel wire or wire mesh pressed into the middle of the glass, annealed, cut and become. The surface of laminated glass can be embossed or polished, and the color can be made colorless and transparent or colored.

The characteristics of laminated glass are safety and fire resistance. Due to the skeleton effect of wire mesh, the laminated glass not only improves the strength of the glass, but also when damaged by impact or sudden change of temperature, the fragments will not fly apart, avoiding the fragments from harming people. In the event of fire, when the flame extension, laminated glass heat blast, due to the role of the wire mesh, the glass can still remain fixed, isolated from the flame, so also known as fireproof glass.

According to the national industry standard JC433-91, the thickness of laminated glass is divided into: 6, 7, 10mm, the specification size is generally not less than 600mm × 400mm, not greater than 2000mm × 1200mm.

Currently, China's production of laminated glass is divided into laminated embossed glass and laminated polished glass two categories. The laminated glass can be used for building doors and windows, skylights, light roofs, balconies and other parts.

(C) laminated glass

Laminated glass is in two or more pieces of glass between the original sheet, with PVB (polyvinyl butyral) resin film, after heating, pressurized bonding and become flat or curved composite glass products. The raw glass used for laminated glass can be ordinary flat glass, float glass, tempered glass, colored glass, heat-absorbing glass or heat-reflective glass.

The number of layers of laminated glass are 2, 3, 5, 7 layers, up to 9 layers, for two layers of laminated glass, the thickness of the original piece of commonly used (mm): 2 + 3, 3 + 3, 3 + 5 and so on. The structure of laminated glass, as shown in Figure 8-1.

Laminated glass has good transparency, impact resistance is several times higher than the general flat glass, with multiple layers of ordinary glass or tempered glass composite, can be made into bulletproof glass. Due to the bonding effect of PVB film, even if the glass is broken, the debris will not fly and hurt people. Through the use of different original glass, laminated glass can also have durable, heat-resistant, moisture-resistant properties.

Laminated glass has a high degree of safety, and is generally used in construction as high-rise building doors, windows, skylights, and stores, banks, jewelry windows, partitions and so on.

(D) titanium glass

Titanium glass is also known as never broken iron armor foil glass. It is a new type of glass with titanium foil film tightly pasted on top of any kind of glass substrate so that it can be combined into a single piece. Titaniumized glass has a high resistance to breakage, high heat and ultraviolet resistance and other functions. Different substrate glass and different titanium foil film can be combined to form titaniumized glass with different color, performance and specifications. The common colors of titaniumized glass are: colorless transparent, teal, teal reflective, copper reflective and so on.

Three, energy-saving glass

Traditional glass used in buildings is mainly light, with the increase in the size of the building windows and doors, people on the windows and doors of the thermal insulation requirements have been correspondingly increased, energy-saving decorative glass is able to meet this requirement, energy-saving and decorative glass in one. Energy-saving decorative glass usually has a pleasing appearance of color, but also has a special absorption of light and heat, transmission and reflection ability, with the building's exterior window glass curtain wall, can play a significant energy-saving effect, is now widely used in a variety of high-level buildings. Energy-saving decorative glass commonly used in buildings have heat-absorbing glass, heat-reflective glass and insulating glass.

(A) heat-absorbing glass

Heat-absorbing glass is able to absorb a large amount of infrared radiation, and maintain a high visible light transmittance of flat glass. Production of heat-absorbing glass has two methods: one is in the ordinary sodium calcium silicate glass raw materials to add a certain amount of heat-absorbing properties of the coloring agent; the other is sprayed on the surface of the flat glass of one or more layers of metal or metal oxide film and made.

Heat-absorbing glass has gray, teal, blue, green, bronze, bronze, pink and golden yellow. China is currently the main production of the first three colors of heat-absorbing glass. Thickness of 2, 3, 5, 6mm four. Heat-absorbing glass can also be further processed into polished, tempered, laminated or insulating glass.

Heat-absorbing glass compared with ordinary plate glass has the following characteristics:

⒈ absorbs solar heat. Such as 6mm thick transparent float glass, in the sun's total transmittance of heat for 84%, while the same conditions under the same conditions of heat-absorbing glass total transmittance of heat for 60%. Heat-absorbing glass of different colors and thicknesses, the degree of absorption of solar radiation heat is also different.

Peak absorbs the visible light of the sun, attenuates the intensity of sunlight, and plays the role of anti-glare.

3 has a certain degree of transparency, and can absorb a certain amount of ultraviolet radiation.

Because of these characteristics, heat-absorbing glass has been widely used in buildings, windows, doors, exterior walls, as well as used as cars, boats, windshields, etc., to play a role in heat insulation, anti-glare, lighting and decoration.

(B) heat-reflective glass

Heat-reflective glass is a high heat reflective capacity and maintain good light transmission of flat glass, it is the use of pyrolysis, vacuum evaporation, cathodic sputtering method, etc., in the glass surface coated with gold, silver, copper, aluminum, chromium, nickel, and iron and other metals or metal oxides film, or the use of ion-exchange methods such as electrofloatation to metal ions to replace the surface of the glass The original ions and the formation of heat-reflective film. Heat reflective glass, also known as mirror glass, gold, teal, gray, purple, brown, bronze and light blue and other colors.

The heat reflective glass has high heat reflectivity, such as 6mm thick float glass, the total reflected heat is only 16%, under the same conditions, heat-absorbing glass, the total reflected heat of 40%, while the heat reflective glass can be as high as 61%, and thus it is often used to make insulating glass or laminated glass to increase its thermal insulation properties. Metal coated heat-reflective glass also has a unidirectional translucent image of the role of the daytime can be seen indoors the outdoor scene, while the outdoors can not see the indoor scene

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Responders: Tanks Quickly - Doorkeeper Grade 2 10-13 09:52

New Glass (Text)

Late at night, from a museum displaying precious paintings and calligraphy, suddenly came a sharp alarm. The police came immediately and caught a suspect who scratched the glass in an attempt to steal the exhibits. You probably won't believe that it wasn't the guards on night duty who called the police, but the scratched glass! This is a special kind of glass with a layer of very fine wire mesh inside. The wire mesh is connected to the power supply, which is connected to an automatic alarm. When the suspect scratches the glass and touches the wire, the alarm goes off. This kind of glass is called "sandwich wire mesh anti-theft glass", museums can be used, banks can be used, jewelry stores can be used, the storage of important drawings, documents, buildings can also be used.

Another kind of "laminated glass" is not used for anti-theft. It is very hard, by the violent impact is still safe;

Even if it is broken, the fragments are still coupled together, will not hurt. Some countries require that high-rise buildings must use this safe and reliable glass.

There is also a "color-changing glass" that reflects sunlight. Buildings equipped with this glass, from the inside to see the outside is very clear, from the outside to see the interior but nothing to see. Color-changing glass will also change the color with the intensity of sunlight and shades of color, regulating indoor light. So people call this glass "automatic curtains".

Some people think that if the glass on the window can keep the room warm in winter and cool in summer, it would be great! Such a glass has long been available, it is the "heat-absorbing glass". In the hot summer, it can block strong sunlight, so that the room is cooler than outside; in the cold winter, it will keep the cold air outside, so that the room stays warm.

Noise is like a "stealthy man" that comes and goes without a trace, unlike soot and wastewater, which can be centralized and dealt with. Although this "invisible man" is difficult to deal with, people have come up with many ways to subdue it. "Eat sound glass" is to eliminate the noise of the competent hand. If the windows on the street are equipped with this glass, the sound of the street for 40 decibels, to the room is only 12 decibels.

In modern architecture, new glass is playing an important role; in the development of new glass, people will create more miracles.

Answer: smurf flash - trial period first class 10-13 10:31

New glass

Late at night, a display of precious paintings and drawings of the exhibition hall suddenly came out of the sound of the urgent alarm. The police came right away and a suspect who had cut through the glass in an attempt to steal the exhibits was caught. You may not believe it, the alarm was not the duty officer, but the scratched glass! This is a special glass, there is a layer of wire mesh, wire mesh connected to the power supply, connected to the automatic alarm. When the suspect scratches the glass, touching the wire mesh, the alarm device will issue an automatic alarm. This kind of glass is called "anti-theft glass with wire mesh". It has a wide range of uses, in the bank and the storage of cultural relics, jewelry, important drawings, documents can be used in the building.

Another kind of "laminated glass", although it is not used for anti-theft, but in high-rise buildings can not be missing. This kind of glass is very hard, with a hundred pounds of sandbags, it is still safe and sound. Even if encountered a greater impact, even if the glass is broken, the fragments will still be coupled together, will not be hurt on. Because it is safe and reliable, some countries require that in high-rise buildings must use this laminated glass.

There is also a "color-changing glass" to reflect the sunlight. Buildings equipped with this glass, from the inside to see the outside is very clear, and from the outside to see the interior, but nothing to see. Color-changing glass will also change color with the strength of the sun, play a role in automatically adjusting the internal light, so people call this glass "automatic curtains".

Some people think that if there is a kind of glass that can make the room warm in winter and cool in summer, how good it is! In fact, such a glass has been available for a long time. This is the "heat-absorbing glass". In the hot summer, heat-absorbing glass can block strong sunlight, so that the room is cooler than outside; in the cold winter, it keeps the cold air outside, so that the room stays warm.

Noise is like a "stealthy man" that comes and goes without a trace, unlike soot and wastewater, which can be centralized. Although this "invisible man" is difficult to deal with, people have come up with many ways to subdue it. "Eat sound glass" is to eliminate the noise of the hands. If this glass is installed in the downtown area on the street in the building, the street noise into the room, it is greatly reduced.

In the modern building, the new glass is playing an important role. With the development of science and technology, the new glass will create more miracles.