(1)character
PVC is a macromolecule compound formed from the VCM polymerizing, its framework unit(-CH2-CHCl-)n,n is the polymerization degree,commonly under 590-1500. During polymerization process,because of the influence of the polymerization technology,reaction condition,reactant composing , garniture etc,eight types of PVC resin can be produced, and which have different capability.
The classification of PVC resin according to the chloroethylene content is:industry degree,food degree,sanitation degree three class.
appearance:white powder or white particulate,the average density:1.40g/cm2.
(2)function
PVC resin is a general synthetic resin,applying widely,used in PVC rigid products,soft products,dope and bond producing or processing . It can classify as follows according to its application fields.
a) construction material:feed and drain pipe,tubes,board,novel type material etc.
b) wrapper:foodstuff,tobacco packing film.
c) electron equipment:such as wire,cable,adhesive tape,bolt etc.
d) furniture,ornament materials.
e) else:such as motor material,medical instrument etc.
(3)quality:accord with the standard of GB4803-94.