PVC Sg8 For Pvc Pipe
IntroductionPolyvinyl chloride (PVC) is a vinyl chloride monomer (VCM) in the peroxide, azo compounds and other initiators or under the action of light and heat according to the free radical polymerization reaction mechanism of polymer polymerization.Vinyl chloride homopolymer and vinyl chloride copolymer are called vinyl chloride resins.Specification
| 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 S S Degree 160 ℃ 10min,% | 80 | 80 | 80 | 80 | 80 |
| Residual Chlore Thylene Content,mg/kg | 1 | 1 | 1 | 1 | 1 |
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