Heat-resistant and flame-resistant PVC (Polyvinyl Chloride) injection molding material

Abstract

The invention relates to the field of PVC (Polyvinyl Chloride) materials, in particular to a heat-resistant and flame-resistant PVC injection molding material. The heat-resistant and flame-resistant PVC injection molding material is prepared from the following raw materials in parts by weight: 100 to 120 parts of PVC resin, 25 to 35 parts of epoxy modified organosilicone resin, 15 to 40 parts of alundum powder, 15 to 35 parts of composite filler, 10 to 15 parts of plasticizer, 7 to 12 parts of lubricant, 5 to 12 parts of thermal stabilizer, 2 to 6 parts of flow modifier and 15 to 22 parts of oxidized polyvinyl alcohol.

Description

technical field [0001] The invention relates to the field of PVC materials, in particular to a heat-resistant and flame-retardant PVC injection compound. Background technique [0002] In the prior art, the cable industry usually uses PVC as the insulating pipe on the outside of the cable. However, due to the disadvantages of PVC resin itself, its flame retardancy is poor, and it will release a large amount of hydrogen chloride gas when it burns on the flame. Hydrogen chloride gas has a certain Due to its "self-extinguishing" property, it will automatically extinguish after it leaves the flame, but it is still prone to dripping, causing dripping and ignition. It is also very easy to decompose in the environment, produce discoloration and release toxic hydrogen chloride gas at the same time, and the speed of its decomposition and release of hydrogen chloride gas will be further accelerated as the temperature rises. When used as an insulating pipe on the outside of the cable, i...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing technology, the cable industry usually uses PVC as the insulating pipe on the outside of the cable, but due to the own shortcomings of PVC resin, its flame retardancy is poor, and it will release a large amount of hydrogen chloride gas when burning on the flame, hydrogen chloride gas It has certain toxicity and corrosiveness, and it will automatically extinguish due to its "self-extinguishing" after it leaves the flame, but it is still prone to dripping, causing dripping and ignition. It is also very easy to decompose in a high temperature environment, causing discoloration and releasing toxic hydrogen chloride gas at the same time. As the temperature rises, the speed of its decomposition and release of hydrogen chloride gas will be further accelerated, and it will inevitably be used as an insulating pipe on the outside of the cable for a long time. Working under conditions, and there is a certain probability of being exposed to open flames, so ordinary PVC materials are difficult to meet the needs of the existing industry. The invention provides a heat-resistant and flame-retardant PVC injection molding