Plasticizers refer to substances that can increase plasticity in polymer compounds or polymer materials. The plastic increase of plasticizer is because the molecular insertion of the plasticizer is inserted between the molecular chain of the polymer, which weakens the gravity between the polymer molecular chain, that is, weakens the agglomeration between the molecular chain, and increases the molecular chain movement and plasticity.

Usage

Plasticizers can increase the plasticity and liquidity of the polymer, improve processability, and make the product have flexible substances.

For example, there is a lot of force between the polyvinyl chloride molecular chain, and the product is hard and lacks elasticity. After adding plasticizers, it can be made into a soft polyvinyl chloride product, which expands the type of product and the scope of use. At the same time, due to the poor thermal stability of polyvinyl chloride, the discoloration began to decompose color when heating to 130 to 140 ° C.

Add plasticizer is conducive to reducing the processing temperature and improving processing performance. Some plasticizers can also enhance the cold resistance, flame readability, mold resistance, antistatic, moisture-proof, etc. of the product at the same time.

There are thousands of compounds that can be used as plasticizers. Among the many additives of plastic, the output of plasticizers is second to none. More than 80%of plasticizers are used for soft polyvinyl chloride products, and the rest are polyethylene ethylene, ethyl chloride -ethyl acetate polymer, acetate cellulose, nitrate cellulose, etc.

It is generally believed that after adding plasticizers, there are two explanations that weaken the interaction between high molecules:
? The plastic increase of polar plasticizers on polar polar polar polar polar groups is that the polar groups of the two are coupling, which weakens the polar effect between polymers.
? The plastic increase of non-polar plasticizers on non-polar high polymers can be attributed to isolation. Plastic increase agents insert a polymer between the polymer and increase the spacing of the polymer. This method of plus plasticizers is often called external plastic increase. If there is no appropriate plasticizer or a high polymer with a strong polymer or a high polarity, the side-based or short-chip chain can be introduced on the polymer chain to weaken the between the high molecular chain.