| Abstrakt: |
The formula of the environmental protection PVC sheathing compound used for wires and cables contains: the base resin, composite stabilizer, plasticizer, filler, antioxidant and lubricant. Each component’s effects on the performance of the sheathing compound were studied. The optimized formula was established as: 100.00 phr PVC , 6.80 phr Ca/Zn stabilizer, 36.30 phr TOTM, 14.0.80phr DIDP, and 30.50 phr heavy calcium carbonate agent. The product properties were demonstrated by a series of experimental means. The results indicate that this formula system contain neither heavy metals such as lead, cadmium, hexavalent chromium and mercury, nor polybrominated biphenyls and their ethers, which can cause significant damage to people and the environment. The product property completely meets the performance standards set for the environmental protection 105 °C PVC sheathing compound. |
