Composite environmental-friendly flame retardant for PVC (polyvinyl chloride) and PVC flame-retardant plastic

Abstract

The invention discloses a composite environmental-friendly flame retardant for PVC (polyvinyl chloride) and PVC flame-retardant plastic. The composite environmental-friendly flame retardant for PVC comprises the following components in parts by weight: 10-20 parts of dimethyl trimethylsilylmethylphosphonate, 30-50 parts of melamine cyanurate, 10-20 parts of molybdenum trioxide and 40-60 parts of ammonium polyphosphate. The PVC flame-retardant plastic comprises the following components in parts by weight: 100 parts of PVC resin and 10-30 parts of composite environmental-friendly flame retardant for PVC. The composite environmental-friendly flame retardant for PVC provided by the invention does not contain halogen and has a good flame-retardant function. The PVC flame-retardant plastic provided by the invention has a long-term flame-retardant performance.

Description

technical field [0001] The invention relates to a flame retardant and PVC plastic, in particular to a composite environment-friendly flame retardant for PVC and PVC flame retardant plastic. Background technique [0002] Fire is a symbol of human civilization. Its application in human life has promoted the progress of history, but at the same time, it can swallow a large amount of social wealth in an instant and endanger people's lives. According to statistics, there are more than 5 million fires every year in the world, nearly 100,000 people die in the sea of ​​fire, hundreds of millions of properties are destroyed, and countless people lose their relatives. [0003] In our country, the fire situation is also not optimistic, and some major fire accidents occur frequently. For example, on November 15, 2010, a major fire broke out in a 28-story apartment building in Jing'an District, Shanghai. The official investigation started because unlicensed welders illegally operated, ...

AI Technical Summary

Problems solved by technology

[0007] (2) After the flame retardant is added, it cannot affect the mechanical strength of the plastic, especially it cannot reduce the thermal deformation temperature, mechanical temperature and electrical insulation performance of the plastic product;

Mechanisms such as: protective film mechanism, otherwise gas mechanism, cooling mechanism, and termination chain reaction mechanism are given in existing textbooks. These can provide a vague direction for the selection of flame retardants, but they cannot provide real effective information. s help