What material is PVC?

PVC material is PVC, which is one of the largest plastic products in the world. It is cheap and widely used. PVC resin is white or light yellow powder, which cannot be used alone and must be modified.

PVC is a white powder with amorphous structure, with low branching degree and poor stability to light and heat. Different additives can be added according to different uses, and PVC plastics can show different physical and mechanical properties.

Adding a proper amount of plasticizer into PVC resin can make various hard, soft and transparent products.

Extended data

PVC, the main component is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness and ductility. The top layer of this surface film is paint, the main component in the middle is PVC, and the bottom layer is adhesive.

It is a kind of synthetic material which is deeply loved, quite popular and widely used in the world today. Its global usage ranks second among all kinds of synthetic materials. The production and application of PVC in the world is growing at a rate of 4%.

The growth rate of PVC in Southeast Asia is particularly remarkable, which is attributed to the urgent demand for infrastructure construction in Southeast Asian countries. Among the materials that can be used to make three-dimensional surface films, PVC is the most suitable material.

Specific gravity: 1.38g/cm3, molding shrinkage: 0.6- 1.5%, molding temperature: 160- 190℃, melting point: 2 12℃.

Features: excellent mechanical and electrical properties, strong acid and alkali resistance, good chemical stability, but low softening point. Suitable for manufacturing thin plates, wire and cable insulation layers, seals, etc.

Molding characteristics:

1, amorphous substance, low hygroscopicity and poor fluidity. In order to improve fluidity and prevent bubbles, plastics can be dried in advance. The gating system of the mold should be thick and short, the gate section should be large, and there should be no dead angle. The mold should be cooled and the surface should be chrome plated.

2. Because of its corrosiveness and fluidity, it is best to use special equipment and molds. All products must be added with different kinds and quantities of additives as required.

3. It is very easy to decompose, and it is easier to decompose steel and copper when exposed to 200 degrees. Corrosive and irritating gases escape during decomposition, and the molding temperature range is small.

4. When using the nozzle of the screw injection machine, the aperture should be large to prevent the dead angle from being delayed. It is best not to have inserts, and if there are, they should be preheated.

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