| Customization: | Available |
|---|---|
| CAS No.: | 9002-86-2 |
| Formula: | -(CH2-Chcl)N- |
|
Still deciding? Get samples of US$ 0/kg
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
PVC is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It's a homopolymer of vinyl chloride. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin. PVC is a white powder with amorphous structure and small branching degree. The molecular weight of industrial PVC is generally in the range of 50,000 ~ 120,000, and has a large polydispersity, and the molecular weight increases with the decrease of polymerization temperature; Without fixed melting point, 80-85 ºC began to soften, 130ºC into viscoelastic state, 160 ~ 180ºC began to change into viscoelastic state; It has good mechanical properties, tensile strength of about 60MPa, impact strength 5 ~ 10kJ/m²; It has excellent dielectric properties.
However, the stability of light and heat is poor, at more than 100 ° C or after a long time of sunlight exposure, it will decompose and produce hydrogen chloride, and further automatic catalytic decomposition, causing discoloration, physical and mechanical properties are also rapidly decreased, in practical applications must be added to improve the stability of heat and light. PVC is very hard, solubility is also very poor, can only dissolve in cyclohexanone, dichloroethane and tetrahydrofuran and other a few solvents, organic and inorganic acids, bases, salts are stable, chemical stability with the use of temperature increases and decreases. PVC is dissolved in acetone-carbon disulfide or acetone-benzene mixed solvent, which is used for dry spinning or wet spinning to form fibers, called chlorylon. It is inflammable, acid and alkali resistant, anti-microbial, wear-resistant, and has good heat preservation and elasticity.
Application
PVC is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foam materials, sealing materials, fibers and other aspects.
technology
PVC shape is different, the difference is very large, the processing method is also diverse, can be pressed, extrusion, injection, coating and so on
| Items | SG3 | SG5 | SG8 |
| K value | 72-71 | 68-66 | 59-55 |
| VISCOSITY NUMBER ml/g | 135-127 | 118-107 | 86-73 |
| Average degree of polymerization | 1370-1251 | 1135-981 | 740-650 |
| NUMBER OF IMPURITY PARTICLE | ≤16 | ≤16 | ≤20 |
| VOLATILE SUBSTANCE | ≤0.3 | ≤0.4 | ≤0.4 |
| VOLATILE CONTEN | ≥0.45 | ≥0.48 | ≥0.50 |
| Whiteness(160ºC,10min)% | ≥78 | ≥75 | ≥75 |
Chemical structure
Diverse products, welcome to consult.
How long is the price valid?
Dear customer, the plastic market is always fluctuating, under normal circumstances, our offer is valid for seven days.
How many days is the delivery date?
Dear customer, the delivery time is seven to fifteen days after the buyer place the order.
Will samples be sent to customers for testing?
Yes, dear customer, if you have the need for sample testing, we will provide you with samples free of charge.
If you have more questions, you are warmly welcome to negotiate and consult!
){kind=link}