Plastics have the advantages of light weight, corrosion resistance, high strength, excellent electrical properties, easy processing, etc. The various beautiful and colorful products made of it have become essential for people's clothing, food, housing and transportation. Important material. However, plastic is not perfect, such as some plastics are too brittle, some are flammable, some are easy to static, etc., so a variety of additives (also known as additives) must be added to improve the performance of plastics.
Additives are chemicals that are dispersed in the molecular structure of a plastic and do not seriously affect the molecular structure of the plastic, but which can improve its properties or reduce costs. Plastic additives require high efficiency, compatibility, durability, chemical stability, non-toxicity and low cost.
There are many varieties of plastic additives. There are antioxidants, plasticizers, light stabilizers, metal deactivators, impact modifiers, and the like. Some raw materials must be added with additives to make finished plastic products. An antioxidant is a chemical additive that inhibits or retards the auto-oxidation reaction. A plasticizer is a substance added to a material (plastic, resin) to improve its processability, flexibility, and stretchability. A light stabilizer is a compound capable of inhibiting light-induced degradation reaction. A metal deactivator is a compound that is inactive or nearly inactive with a catalytically active metal. Lubricants are compounds that reduce the frictional resistance between the surfaces of product parts at the temperature of use. Such additives are particularly important for polyethylene films. The impact modifier is a polymer material that improves the toughness of plastics.