Preparation process of environment-friendly flame-retardant insulating PVC cable material

Abstract

The invention discloses a preparation process of an environment-friendly flame-retardant insulating PVC cable material. The preparation process comprises a material preparation stage, a kneading stage, an extrusion stage, a granulation stage and a packaging stage; the material preparation stage comprises screening, weighing, grinding and preheating; the kneading stage comprises high-speed stirringand low-speed stirring cooling; the extrusion stage comprises high-speed double-screw mixing and low-speed single-screw extrusion; the granulation stage comprises hot cutting, air cooling and screening; the packaging stage comprises metering and packaging; and an electron accelerator is arranged at a low-speed single-screw extrusion discharge end. A plasticizer and a smoke suppressant with the flame-retardant effect are added into raw materials, so that the generation of toxic gas and smoke dust during a fire is reduced, and the environmental protection effect is achieved; and by changing theplasticity of the PVC cable material, the anti-aging and anti-cracking performance of the PVC cable material is improved, so that the insulation effect of the PVC cable material is improved.

Description

technical field [0001] The invention relates to the fields of polymer materials and wire and cable materials, in particular to a preparation process of an environment-friendly flame-retardant insulating PVC cable material. Background technique [0002] Due to its low price and excellent performance, PVC cable material has long occupied an important position in wire and cable insulation and protection materials. However, the PVC cable materials currently used have the following problems. 1) When the PVC cable is burned, it will produce HCL gas, which will cause harm to the human body after inhalation; 2) When the PVC cable is burned, it will produce a lot of smoke due to incomplete combustion of some gases. , making people suffocate, affecting visibility, and seriously affecting people's lives and property safety; 3) When mixing materials, due to the addition of plasticizer and other raw material particles that are too thick, the insulation of the produced PVC cables is not g...

AI Technical Summary

Problems solved by technology

However, the PVC cable materials currently used have the following problems. 1) When the PVC cable is burned, it will produce HCL gas, which will cause harm to the human body after inhalation; 2) When the PVC cable is burned, it will produce a lot of smoke due to incomplete combustion of some gases. , making people suffocate, affecting visibility, and seriously affecting people's lives and property safety; 3) When mixing materials, due to the addition of plasticizer and other raw material particles that are too thick, the insulation of the produced PVC cables is not good, affecting normal use ; 4) The performance of heat resistance and adaptability to the environment is not strong, resulting in easy aging and cracking, thus destroying the insulation of PVC cables

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