DONGGUAN SUNYO PLASTIC CO., LTD
18 years of focusing on the production of goggles, protective face shilds, PVC, PET, PETG, PP, PS plastic film
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The chemical field of PVC plastic materials refers to the compound polyvinyl chloride. The English name is polyvinyl chlorid the English abbreviation is PVC. This is the meaning of the wide use of PVC. The editor of Dongguan Shengyao-Protective Mask, Goggles, PVC Plastic Film Company tells everyone:
Its natural color is yellowish translucent shiny. Transparency is better than polyethylene polypropylene, but worse than polystyrene. Depending on the amount of additives, it can be divided into soft hard polyvinyl chloride. Soft products are flexible tough, feel sticky. The hardness of hard products is higher than that of low-density polyethylene. When it is lower than polypropylene, whitening will occur at the inflection. Common products: plates, pipes, shoe soles, toys, doors windows, wire sheaths, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene.
Chemical physical properties of PVC plastic materials Rigid PVC is one of the more widely used plastic materials. PVC material is a non-crystalline material. In actual use, PVC materials often add stabilizers, lubricants, auxiliary processing agents, pigments, reinforcing agents other additives.
PVC plastic material has non-flammability, high strength, weather resistance excellent geometric stability. PVC has strong resistance to oxidants, reducing agents strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid concentrated nitric acid is suitable for contact with aromatic hydrocarbons chlorinated hydrocarbons.
The melting temperature of PVC plastic materials during processing is a very important process parameter. If this parameter is appropriate, it will cause the problem of material decomposition. The flow characteristics of PVC are quite poor, its process range is very narrow. Especially the high molecular weight PVC material is more difficult to process (this kind of material usually needs to add lubricant to improve the flow characteristics), so the PVC material with small molecular weight is usually used. The shrinkage rate of PVC is quite low, generally 0.2~0.6%.
PVC plastic materials can be divided into soft PVC hard PVC. Hard PVC accounts for about 2/3 of the market, soft PVC accounts for 1/3. Soft PVC is generally used for floors, ceilings the surface of leather, but because soft PVC contains softeners (this is also the difference between soft PVC hard PVC), it is easy to become brittle difficult to store, so its use range is limited. Rigid PVC does contain softeners, so it has good flexibility, easy forming, brittle, non-toxic pollution-free, has a long storage time, so it has great development application value. Below are referred to as PVC. The essence of PVC is a kind of vacuum blister film, which is used for the surface packaging of various panels, so it is also called decorative film adhesive film, which is used in building materials, packaging, medicine many other industries. Among them, the building materials industry accounts for a major proportion of 60%, followed by the packaging industry, there are several other small-scale applications.
Dongguan Shengyao Plastic Products Co., Ltd. was established in 2002 covers an area of more than 10,000 square meters. It is a professional manufacturer of transparent masks, PVC, PP, PET, PS films. The products are widely used in blister packaging, ke It can provide 17% value-added tax invoices for customers in industries such as printing, window paste, folding boxes, hardware, toys, magnetic cards, playing cards, billboards, helmets, electronic insulation.