Polyvinyl chlorides is high molecular compounds polymerized with structural element as CH2-CHCLn,degree of polymerization usually as 590-1500.In the process of re-polymerization ,affected by kinds of factors such as the polymerization process, reaction conditions, reactant composition, additives etc.it can produce eight different types of PVC resin performance is different.

Product Parameters

 

Items	SG3	SG5	SG7	SG8
K value	72-71	68-66	62-60	59-55
Viscosity Number (ml/g)	135-127	118-107	95-87	86-73
Average degree of polymerization	1370-1251	1135-981	845-741	740-650
Number of impurity substance	≤16	≤16	≤20	≤20
Mass fraction of volatiles (including water)	≤0.30	≤0.40	≤0.40	≤0.40
Appearance density	≥0.45	≥0.48	≥0.50	≥0.50
Number of "fish eye"	≤20	≤20	≤30	≤30
Whiteness(160ºC,10min)%	≥78	≥75	≥75	≥75
VCM residue	≤5	≤5	≤5	≤5
Packing	25kgs two layers draft paper bag or 1000kgs PP bag

Package
25kgs, 40kgs,50kgs/PP or customized

Application
SG-1 is used in producing high-grade electrical insulating material 
SG-2 is used in producing electrical insulating material, common soft products and film 
SG-3 is used in producing electrical insulating materials, agricultural film, daily-use plastic products, 
SG-4 is used in producing membranelle for industrial and civil use, tube and pipes 
SG-5 is used in producing transparent products section bar, hard tube and decorative materials 
SG-6 is used in producing clear foil, hard board and welding rod 
SG-7, SG-8 is used in producing clear foil, hard injection molding.