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The role of PVC processing aids in PVC door and window profiles.
2025-05-16

The uniformity and adequacy of plasticization of PVC resin during processing are crucial for the quality of door and window profiles. PVC processing aids can effectively reduce the melting temperature of PVC resin, accelerate the melting rate, and enable PVC to achieve good plasticization at lower temperatures.


Improving melt flowability: The production of PVC door and window profiles often involves complex extrusion molding processes, and the flowability of PVC melt directly affects the molding quality and production stability of the profiles. PVC processing aids can significantly improve the flowability of the melt.


Reduce melt fracture: During high-speed extrusion, PVC melt is prone to melt fracture. PVC processing aids improve the elasticity and viscosity of the melt, enhance its stability, and effectively suppress the occurrence of melt fracture.


Improving profile strength: PVC processing aids can improve the interaction between PVC molecular chains, enhance the entanglement and cohesion between molecular chains, thereby improving the mechanical properties such as tensile strength and bending strength of profiles. For example, PVC door and window profiles with appropriate processing aids can maintain good structural integrity, prevent deformation and fracture, and extend the service life of doors and windows when subjected to external forces such as wind pressure and opening and closing forces.


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