| Feature: | Photodegradable |
|---|---|
| CAS No.: | 9002-86-2 |
| Formula: | -[CH2chcl]-N |
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Polyvinyl chloride is a non-crystalline polymer with a glass transition temperature of 105-75 °C in terms of molecular weight.
Compared with other general-purpose plastics, polyvinyl chloride has the characteristics of flame retardancy and self-extinguishing, and has excellent resistance to Chemically corrosive, electrically insulating, chemically stable and thermoplastic, insoluble in water, alcohol, gasoline, swells and dissolves in ethers, ketones and aromatic hydrocarbons. Polyvinyl chloride resin, appearance is white amorphous powder, particle size is 60-250μm, apparent density is 0.40-0.60g/ml, 100ml cyclohexanone contains 0.5g resin in dilute solution viscosity number 80-160ml/g, 100 at room temperature The amount of plasticizer absorbed by gram resin is 20-30g.
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Items
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SG3
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SG5
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SG8
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K value
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72-71
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68-66
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59-55
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VISCOSITY NUMBER ml/g
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135-127
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118-107
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86-73
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Average degree of polymerization
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1370-1251
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1135-981
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740-650
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NUMBER OF IMPURITY PARTICLE
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≤16
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≤16
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≤20
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VOLATILE SUBSTANCE
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≤0.3
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≤0.4
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≤0.4
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VOLATILE CONTEN
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≥0.45
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≥0.48
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≥0.50
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Whiteness(160ºC,10min)%
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≥78
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≥75
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≥75
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Polyvinyl chloride has the outstanding characteristics of abundant raw materials (oil, limestone, coke, salt and natural gas),mature manufacturing process, low price, and wide range of uses. It has become the second largest general-purpose resin in the world after polyethylene resin. 29% of the world's total synthetic resin consumption. Polyvinyl chloride is easy to process and can be processed by molding, laminating, injection molding, extrusion, calendering, blow molding, etc. Polyvinyl chloride is mainly used to produce soft plastic products such as artificial leather, films, and wire sheaths, as well as hard plastic products such as plates, doors and windows, pipes and valves.
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