PVC Roofing Membranes Raw Material PVC Plastic Granule Pvc Powder
Polyvinyl chloride, English abbreviation PVC (Polyvinyl chloride), is vinyl chloride monomer (VCM) in peroxide, azo compound and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization aggregated polymers. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.
PVC is a white powder with an amorphous structure, the degree of branching is small, the relative density is about 1.4, the glass transition temperature is 77~90°C, it begins to decompose at about 170°C, and it has poor stability to light and heat. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration and rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve the stability to heat and light.
The molecular weight of industrially produced PVC is generally in the range of 50,000 to 110,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80~85°C, and becomes viscoelastic at 130°C , 160~180℃ began to change into a viscous flow state; it has good mechanical properties, the tensile strength is about 60MPa, and the impact strength is 5~10kJ/m2; it has excellent dielectric properties.
PVC used to be the most widely used general-purpose plastic in the world. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc.
Specification:
Carbide Technical Data
| Items | SG8 | SG7 | SG5 | SG4 | SG3 |
| Average degree of polymerization | 650-740 | 750-850 | 980-1080 | 980-1100 | 1250-1350 |
| K value | 55-59 | 60-62 | 66-68 | 66-68 | 71-72 |
| Viscosity | 73-86 | 87-95 | 107-118 | 107-118 | 127-135 |
| Foreign Particle | 16max | 16max | 16max | 16max | 16max |
| Volatile Matter,% | 30max | 30max | 30max | 30max | 30max |
| Apparent Density,g/ml | 0.53min | 0.53min | 0.48min | 0.53min | 0.48min |
| 0.25mm Sieve Retained % | 2.0max | 2.0max | 1.0max | 1.0max | 1.0max |
| 0.063mm Sieve Retained % | 97min | 97min | 95min | 98min | 98min |
| No.of Grain/400cm² | 20max | 20max | 10max | 10max | 10max |
| Plasticizer absorption of 100g resin,g | 14min | 16min | 25min | 19min | 28min |
| Whitene SS Degree 160℃ 10min,% | 80 | 80 | 80 | 80 | 80 |
| Residual chlore Thylene Content,mg/kg | 1 | 1 | 1 | 1 | 1 |
Ethylene Technical Data
Brands that we can supply:
Application:
PVC resin has a wide range of applications and can be used in the production and processing of PVC hard products, soft products, coatings and adhesives.
SG-3 is suitable for cable and wires, films, high-grade artificial leather, etc.
SG-5 is suitable for the processing of hard products such as profiled materials, pipes and hard plates.It can also be applied to film, leather cloth, plastic sandals, soles, and various soft products.
SG-7 is suitable for the processing of transparent sheet, packaging, foam board and other products.
SG-8 is suitable for packaging transparent sheets, plates, elbows of high-strength pipe fittings and other products.
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Roofing Membranes PVC Raw Material Polyvinyl Chloride Resin Film Standard Images
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