Specific gravity: 1.38 g / cubic centimeter, forming shrinkage rate: 0.6-1.5%, molding temperature: 160-190.
Characteristics: mechanical properties, excellent electrical properties, strong acid and alkali resistance, good chemical stability, but the softening point is low. It is suitable for the production of thin plate, wire and cable insulation, sealing, etc..
Pvc film forming characteristics:
1. Amorphous material, moisture absorption is small, poor liquidity. In order to improve the liquidity and prevent the occurrence of bubbles, plastics may be pre drying. Mold gating system should be thick and short, gate section should be large, not dead. Mold need to be cooled, and chrome plated surface.
2 due to its corrosive and mobile features, the best use of special equipment and mold. All products are to be added to different types and quantities according to the need to be added;
3 extremely easy to decompose, in 200 degree temperature and steel. Copper contact more easily decomposed, the decomposition of the corrosion;
4 the use of screw injection machine nozzle, the aperture is appropriate, in order to prevent the corner of the material.