English synonyms

Scon5300;sicron;sicron530;tevilon;thermovyl;tk1000;tocrylc440;trovidurn

Overview

Polyvinyl chloride (PVC) is the world's second largest general-purpose resin. As early as 1835, French chemist Regnault discovered that vinyl chloride polymerizes into a white solid under sunlight. In 1914, chemists discovered that organic peroxides can accelerate the polymerization reaction of vinyl chloride. The use of emulsion polymerization has made the production of polyvinyl chloride industrialized. Emulsion polymerization is to disperse vinyl chloride monomer and water evenly in water with sodium alkyl sulfonate (surfactant) as an emulsifier to form an emulsion, and then use potassium persulfate or ammonium persulfate as an initiator to polymerize vinyl chloride into polyvinyl chloride.

Physical and chemical properties

Polyvinyl chloride, referred to as PVC, is one of the earliest industrialized plastic varieties. Its current output ranks second only to polyethylene. Polyvinyl chloride has been widely used in industry, agriculture and daily life. Polyvinyl chloride is a polymer compound formed by the polymerization of vinyl chloride. It is thermoplastic. White or light yellow powder. Relative density 1.35-1.40. Chlorine content 56%-58%. Melting point is about 70-85℃. It can be dissolved in or swollen by ketones, esters, tetrahydrofuran and chlorinated hydrocarbons. It has excellent chemical corrosion resistance. It has poor thermal stability and light resistance. It begins to decompose hydrogen chloride above 100℃ or exposed to sunlight for a long time. Stabilizers need to be added when making plastics. It has excellent electrical insulation and will not burn. It is used to make plastics, coatings and synthetic fibers. Depending on the amount of plasticizer added, soft and hard plastics can be made. The former can be used to make transparent films (such as raincoats, tablecloths, packaging materials, agricultural films, etc.), artificial leather, foam plastics and wire sheaths, etc. The latter can be used to make plates, pipes, valves, doors and windows, etc. The suspension polymerization method can obtain powdered resin. The emulsion polymerization method can obtain paste resin. Both can be used to make soft or hard plastics.

Application fields

The application of polyvinyl chloride is extremely wide, from building materials to automobile manufacturing, children's toys, from industrial and agricultural products to daily necessities, involving all walks of life and all aspects. For example, it can be used for electrical insulation materials, such as the insulation layer of wires, which has almost completely replaced rubber. It can be used as heat-resistant wires for electrical appliances, bushings for wires and cables, etc.; in automobiles, it can be used as steering wheels, top covers, cushions, etc.; in construction, it can be used as various profiles, such as tubes, rods, profiles, door and window frames, interior decoration materials, sewer pipes, etc.; as chemical equipment, it can be processed into various chemical-resistant pipes, containers and anti-corrosion materials. Soft polyvinyl chloride can also be made into various tubes, films, sheets and other products with toughness and flex resistance, which can be used to make packaging materials, rain gear, agricultural films, etc. Polyvinyl chloride paste can be applied to cotton cloth and paper. When heated at 140-145°C, it quickly gels and forms a film, which is then pressed by rollers to form artificial leather, which can be made into various products. PVC foam is also commonly used as padding, slippers, and thermal and sound insulation materials.

Uses

1. Its products are used in light industry, building materials, agriculture, daily life, packaging, electricity and other fields
2. Can be used to produce various high-grade insulating materials, agricultural films, artificial leather, plastic shoes, hard pipes, records, welding rods, etc.
3. Used as raw materials for polyvinyl chloride plastic products
4. Used to produce U-PVC doors and windows, special-shaped materials and pipes, etc.
5. Used to make perchlorethylene resin, etc.
6. Used for food packaging, water pipes and general polyvinyl chloride products
7. Used for furniture veneer, speaker veneer, blown film, etc.
8. Used for extrusion Processed into blood transfusion catheters, drainage bags, drainage catheters and drip buckets, etc. and other medical accessories and catheters
9. Used in the manufacture of plastic sheets, pipes, wires and cables, etc.
10. Used in the production of wire and cable sheaths, equipment anti-corrosion, automotive parts, etc.
11. Used in the manufacture of soft and hard products in industry, agriculture and life
12. Shrink film for packaging and hollow blow molding products for packaging
13. Special raw materials for injection molding of PVC-U pipe fittings
14. Used in cable and wire insulation layers, protective sleeves, chloroprene fibers, PVC soft
15. Its products are used in light industry, building materials, agriculture, daily life, packaging, electricity, public utilities and other fields
16. Used in the production of profiles, sheets, records, pipes, containers, floors, etc.
17. Used for insulation and sheathing of wires and cables and other plastics for outer layers
18. Used to make a series of paste products, impregnation, slush products, foam plastics, synthetic fibers, etc.
19. Used to prepare non-foamed artificial leather bottom layer, artificial leather and floor surface, canvas impregnation molding, hollow molding products and erasers, bottles Cover, etc.
20. Used to manufacture electrical insulating materials, various films, artificial leather, hoses, profiles, etc.
21. Has the general use of PVC, especially suitable for manufacturing soles, tapes and other products with a certain degree of elasticity
22. Used for the sheath of various wires and cables such as electricity, communications, and marine cables
23. Used to prevent sticking to the kettle during polyvinyl chloride suspension polymerization
24. Mainly used in the production of food packaging materials
25. Used to manufacture films, hoses, artificial leather, shoe materials, etc.
26. Applied in food, medical, stationery, building materials, decoration, chemicals Industry, textile, daily necessities manufacturing, etc.
27. Used in the production of artificial leather, floor leather, battery separators, conveyor belts, insulating coatings, wallpaper, window screens, bottle cap dripping, toys, etc.
28. Used as high-end electrical insulation materials and protective layers
29. Used as the insulating layer and sheath layer of marine cables
30. Used for rubber and plastic insulated cable sheaths and other plastics for outer layers
31. Used in the manufacture of blood transfusion bags and blood, blood products low-temperature storage containers and tubes, drip buckets, etc.
32. Used in the production of PVC bottles, hard injection molding pipes, etc. and for the production of perchlorethylene resins
33. Used in the production of paints, fibers, adhesives, insulating materials, etc.
34. Used Main raw materials for producing PVC records, transparent sheets, hard boards, welding rods, fibers, etc.
35. Used as hard tubes, hard sheets, monofilaments, sleeves, etc.
36. Used to make artificial leather, wallpaper, plastic floors, impregnated window screens, impregnated gloves, prostheses, flame-retardant conveyor belts and non-woven carpets, etc.
37. Used to make electrical insulating materials, soft products, films, artificial leather surface films, etc.
38. Used to produce PVC hard tubes, hard sheets, semi-hard sheets, films, profiles, etc.
39. Used to make hard boards, records, valves, pipelines, welding rods, etc.
40. Used for communication, signal and low-voltage cables and insulated wires with higher electrical requirements
41. Used to produce PVC films, hoses, shoe materials, etc.

Team Presentation