Polyvinyl
chloride is high molecular compounds polymerized by
vinyl chloride monomer(VCM) 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. According to residual content of vinyl
chloride in polyvinyl chloride resin, is can be
divided into :commercial grade, food hygiene grade
and medical application grade in appearance,
polyvinyl chloride resin is white powder or
pellet.
Item
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
≤0.3
≤0.4
VOLATILE CONTEN
≥0.45
≥0.48
≥0.50
Whiteness(160℃,10min)%
≥78
≥75
≥75
Packing
25kgs two layers draft paper bag or 1000kgs
PP bag
Application:
PVC resin is widely used in production of
polyvinyl chloride boardy leatheroid, paint
and adhesive agents,tec. Paint and adhesive
.Division according to application:
1.Building materials: such as UPVC tubing,
UPVC pipes, panel and section bars. 2.Packing
materials. 3.Electronic materials: such as
electronic wires, cables,adhesive tapes and
bolts. 4.Furniture and decorating
materials,etc. 5.Others: leatheroid, medical
disposable products, antiseptic
paint,etc.
