Why do we add CPE to PVC products?

Why do we add CPE to PVC products?

PVC Polyvinyl Chloride is a thermoplastic resin polymerized from Chlorinated Polyethylene under the action of an initiator. It is a homopolymer of Vinyl Chloride. PVC is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, Artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc.
The outstanding advantages of general PVC resin plastic products are flame retardancy, wear resistance, chemical corrosion resistance, and low gas and water vapor leakage. In addition, comprehensive mechanical energy, transparent products, electrical insulation, heat insulation, noise reduction, and shock absorption are also good, making it the most cost-effective universal material. However, its drawbacks are poor thermal stability and impact resistance, which can easily cause fragility during the use of both hard and soft PVC. Because PVC is a hard plastic, in order to make it soft and improve its impact resistance, a large amount of plasticizer must be added.
CPE chlorinated polyethylene is an excellent toughening agent for PVC. Particular 135a type CPE Chlorinated Polyethylene has excellent low-temperature impact resistance, so it is mainly used as an impact modifier for hard PVC products. The dosage of 135a type CPE used as an impact modifier for PVC profiles is 9-12 parts, and the dosage of 4-6 parts used as an impact modifier for PVC water pipes or other pressurized liquid conveying pipes, effectively improving the low-temperature impact resistance of PVC products. In general, adding Chlorinated Polyethylene to PVC products usually has the following effects: increasing the toughness of the product, improving impact resistance, and changing the strength of the product.
In addition, CPE 135A Chlorinated Polyethylene is widely added to PVC sheets, sheets, calcium plastic boxes, home appliance shells, and electrical accessories to improve the physical, mechanical, and electrical properties of PVC products.
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Post time: Jul-24-2023