What are the insulation materials?

What are the insulation materials? In order to make the indoor environment more comfortable and livable, ordinary buildings usually use some thermal insulation materials, which are various. What are the commonly used insulation materials?

What are the insulation materials? 1 1, rock wool board.

Rock wool board, as one of the thermal insulation materials with high utilization rate, has good fire resistance and moisture absorption, and is very popular in the south. But the thermal insulation performance is poor, which is not suitable for northern families.

2, heat insulation color steel sandwich panel

Insulation color steel sandwich panel is made by pressing two layers of steel plates, with polystyrene in the middle layer and high-strength adhesive in the interlayer. Its excellent thermal insulation performance is deeply loved by the public.

3. Porous thermal insulation board

The appearance of the porous insulation board is porous structure, which mainly plays the role of heat dissipation. Because of this porous structure, the air in the pores has low thermal conductivity and good thermal insulation.

4, fire insulation board

As one of the boards with comprehensive functions, fireproof insulation board is made of natural materials such as perlite, inorganic mineralized materials and fiber materials. After scientific thermal reaction, it not only has good insulation effect, but also has fireproof and waterproof functions.

5. Extruded insulation board

The base material of XPS extruded insulation board is a rigid foam plastic board made of polystyrene resin, other auxiliary materials, high temperature heating and catalyst. XPS extruded board has a closed-cell honeycomb structure. It is precisely because of this special structure that the thermal conductivity of XPS extruded insulation board is extremely low, and it can prevent water infiltration and prolong the service life of the board.

What is the exterior wall thermal insulation coating?

1. The coating that plays the role of heat insulation on the surface of construction site is called heat insulation coating, which can be divided into transparent heat insulation coating and opaque heat insulation coating according to different application occasions;

According to the thermal insulation mechanism, thermal insulation coatings can be divided into three types: barrier thermal insulation coatings, reflective thermal insulation coatings and radiation thermal insulation coatings. Building energy conservation is one of the key points in China's energy conservation work, and external wall insulation has become the main product of building energy conservation.

2. For areas where thermal design is mainly based on thermal insulation, such as cold areas and cold areas, external thermal insulation of external walls is not only reasonable, but also applicable and developing rapidly. However, for areas where thermal design only considers thermal insulation, or areas where thermal design mainly adopts thermal insulation, there is still room for further improvement in some external wall thermal insulation.

In this paper, according to the solar radiation heat balance equation of building envelope and the climate characteristics of different regions, various thermal insulation coatings are reasonably selected and used to form a composite system, which is both thermal insulation and thermal insulation, so as to achieve the purpose of comfortable indoor thermal environment and energy saving and consumption reduction.

3. The main raw materials of the coating are composed of nano hollow beads, emulsion, titanium dioxide and other substances, in which the content of nano hollow beads in the coating should be at least 80%, so that a three-dimensional network hollow structure connected by closed beads can be formed on the surface of the object after brushing, and an electrostatic air mass can be formed between the nano hollow ceramic beads and the beads.

That is to say, for each thermal insulation unit, the thermal conductivity of the coating can reach 0.04 w/m.k, which can effectively prevent heat conduction and insulate heat. The thermal insulation grade of the coating reaches R-30. 1, and the thermal reflectivity is above 90%, which can reflect infrared rays in large quantities, prevent infrared rays from heating objects, effectively inhibit the radiation and heat conduction of the sun and infrared rays, and the thermal insulation inhibition efficiency can reach about 90%.

What are the insulation materials? 2. What are the insulation materials?

Thermal insulation material is an important material for thermal insulation in winter and summer in decoration. Thermal insulation materials are mainly divided into porous materials, thermal reflection materials and vacuum materials.

Porous material

Porous materials use the pores contained in the material itself for heat insulation, because the thermal conductivity of air or inert gas in the gaps is very low, such as foam materials and fiber materials; Thermal reflective materials have high reflection coefficient and can reflect heat, such as gold, silver, nickel, aluminum foil or metallized polyester, polyimide film, etc.

Vacuum heat insulation material

Vacuum heat insulation material is to use the vacuum inside the material to block convection and thus heat insulation. The aerospace industry has strict requirements on the weight and volume of thermal insulation materials, and often requires them to have sound insulation, vibration reduction, corrosion resistance and other properties. Different aircraft have different requirements for thermal insulation materials. Foam plastics, superfine glass wool, high-silicon wool and vacuum insulation panel are commonly used in aircraft cockpit and cockpit insulation.

Heat reflecting material

The heat reflective material is reflected by the layer, similar to the principle of incubator. The thermal insulation material of missile head was phenolic foam in the early days. With the application of polyurethane foam with good temperature resistance, a single thermal insulation material has developed into a sandwich structure. The thermal insulation method of missile instrument cabin is to coat a millimeter-thick foam coating on the outer skin of the cabin as an anti-corrosion coating at room temperature. When pneumatic heating reaches above 200℃, it will bubble evenly and play a role in heat insulation.

When the artificial earth satellite moves in the alternating environment of high temperature and low temperature, it needs to use multi-layer heat insulation materials with high reflectivity, which generally consists of dozens of aluminum-plated films, aluminum-plated polyester films and aluminum-plated polyimide films. In addition, the development of surface heat insulation tile successfully solved the heat insulation problem of space shuttle, which also marked the higher development level of heat insulation materials.

Second, what is a good thermal insulation material?

When choosing thermal insulation materials, we must first determine where to use them. Different places have different effects of thermal insulation materials. Several common thermal insulation materials with low thermal conductivity include thermal insulation paper, glass fiber cotton board/felt, polyurethane foam board, centrifugal peeled fiber cotton/rock wool, micro-nano thermal insulation board and so on.

Low temperature insulation requires thermal insulation materials with low thermal conductivity, such as vinylon thermal insulation hard felt and nano-based thermal insulation soft felt. High temperature insulation uses materials with high thermal conductivity, such as mica.

What are the insulation materials? 3 What are the insulation materials?

Thermal insulation materials include polyurethane rigid foam, polystyrene board thermal insulation layer, FS cement fly ash thermal insulation roof and FB new composite roof panel.

1, rigid polyurethane foam

Polyurethane rigid foam is a new type of modern microcellular foam material with closed cell structure and low density. It has excellent thermal insulation performance, low thermal conductivity, low water absorption and convenient construction and operation.

However, because rigid polyurethane foam is in its infancy, direct spraying is generally used to insulate the roof. This method can be used as long as it is sprayed and foamed on site, no matter what kind of roof structure.

2, polystyrene insulation layer

The insulation layer of polystyrene board is made of broken polystyrene foam and cement, which is between the waterproof layer and the fine stone concrete surface layer. It not only has the function of thermal insulation, but also can be used as a thermal insulation layer to prevent the waterproof layer of fine stone concrete surface from expanding with heat and contracting with cold.

At present, the overhead precast reinforced concrete slab is widely used, and there is only a gap of 250mm between it and the parapet, so the external heat can still be transmitted to the room, and the dark waterproof layer below the gap will absorb heat, leading to an increase in room temperature.

3.FS cement fly ash thermal insulation roof

This new thermal insulation material is made of sulphoaluminate cement, foaming agent, foam stabilizer and fly ash by pouring and foaming. It has good environmental protection performance and comprehensive utilization, low density, low thermal conductivity and good thermal insulation performance. As FS thermal insulation material is a closed-cell structure, its natural moisture content and water absorption rate are relatively low, so the moisture of cement mortar leveling layer will not be absorbed.

4.FB new composite roof panel

FB new composite roof panel is composed of insulation board, light structural board and air layer, which has very good heat insulation effect and is waterproof after special treatment. Compared with the traditional roof, it is light in texture, reducing the weight by about 230kg/m2 and improving the working efficiency.

How to choose thermal insulation materials?

The selection of insulation materials can be calculated according to the price of insulation materials, and the insulation materials with the highest cost performance can be selected. The selected thermal insulation materials should be consistent with the use environment and meet the needs of users, so as to select the most suitable high-temperature thermal insulation materials.

1. According to the temperature resistance of thermal insulation materials, thermal insulation materials can be divided into three types: high temperature insulation materials, medium temperature insulation materials and low temperature insulation materials. When selecting high-temperature insulation materials and medium-temperature insulation materials, the insulation materials should be higher than the long-term use temperature 100- 150℃, and the low-temperature insulation materials should be lower than the long-term use temperature 10-30℃.

2. Thermal insulation materials are divided into textiles, profiles, cotton, blankets, etc. Different forms of thermal insulation materials also have certain differences in physical properties. When choosing thermal insulation materials, it depends on whether the physical properties of the materials are consistent with the use environment.