Qingdao PMST Chemical co.,Ltd

Calcium - Zinc stabilisers Whatsapp:+86-13553089896 - PVC,ca/zn stabilizer manufacturer/factory. PVC Heat Stabilizer , Ca-Zn PVC Heat Stabilizer, Stabilisers - PVC,Lead Stabilisers - PVC, When PVC is heated to 170~180°C, chlorine and hydrogen in the molecules are eliminated and release of hydrogen chloride becomes evident. Once such decomposition starts, unstable structures are formed in the molecule, which further accelerate HCl elimination and decomposition. As PVC is heated to soften during the extrusion or moulding process, prevention of hydrogen chloride elimination due to heat and subsequent decomposition is required. The stabiliser prevents such initial elimination of hydrogen chloride from PVC. Therefore, use of stabilisers (metal compounds) is essential to prevent the chain reaction of decomposition. They can also impart to the PVC enhanced resistance to daylight, weathering and heat ageing and have an important influence on the physical properties and the cost of a for...