Modified PET flame retardant film

Abstract

The invention discloses a modified PET flame retardant film, which comprises the following raw materials (by weight): 5-6 parts of glass fiber, 15-25 parts of PET, 1-4 parts of decabromodiphenylethane, 7-9 parts of magnesium hypophosphite, 1.2-1.4 parts of tetrahydrofuran, 2-4 parts of ramie stalk, 1-2 parts of silk, 2-3 parts of gelatin, 13-15 parts of 1-methyl-2-pyrrolidinone, 1-1.5 parts of melamine cyanurate, 4-6 parts of ninhydrin, 0.5-1 part of an antioxidant 1010, 0.1-0.5 part of an antioxidant 168, 0.5-1 part of zinc borate, 3-4 parts of modified maleate resin, 1.6-2.4 parts of modified dammar resin and 1-2 parts of erucamide. The PET flame retardant film product prepared by the use of the PET flame retardant film master batch has advantages of good toughness, high tensile strength, good flame retardant effect and low cost. The preparation technology is simple and is easy to realize, and can be widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant films, and in particular relates to a modified PET flame-retardant film. Background technique [0002] PET flame retardant film is a new technology and technical problem at home and abroad. China is also studying the use of transesterification to introduce phosphate esters into the PET molecular framework, but the actual operation is inconvenient, expensive, and difficult to achieve a true V0 level, so it is difficult to expand at this stage. [0003] People try to use traditional convenient and practical additive flame retardants, but there are problems of compatibility, dispersibility, poor interface and persistence, and toxicity to operators, especially poor toughness, which has no practical significance. In order to solve these problems, people use flame-retardant masterbatches, and some people use PE, PP, and EVA as carriers, but they all have the problems of poor compatibility and t...

AI Technical Summary

Problems solved by technology

China is also studying the use of transesterification to introduce phosphate into the PET molecular skeleton, but the actual operation is very inconvenient, the cost is high, and it is difficult to achieve the true V0 level, so it is difficult to expand at this stage

[0003] People try to use traditional convenient and practical additive flame retardants, but there are problems of compatibility, dispersion, poor interface and persistence, and toxicity to operators, especially the poor toughness has no practical significance

In order to solve these problems, people use flame retardant masterbatches, and some people use PE, PP, EVA as carriers, but there are problems of poor compatibility and toughness.

For this reason, people use PET as a carrier, but the PET flame-retardant film made has poor toughness and has no practical significance.

So people are looking for various toughening agents, some toughening agents are added, but the product becomes brittle, some toughening agents are added, and some improvements are made, but the effect is not great, the cost is too high, and there is no practical value

In addition, when using flame-retardant masterbatches, it is difficult to grasp the addition ratio, and the addition ratio is small, requiring a large amount of additives such as flame retardants in the masterbatch. Not only is it difficult to process masterbatches, but also when processing films, the dispersibility The incompatibility is poor, the flame retardancy of the film product is uneven, the addition ratio is large, the masterbatch contains a lot of carriers, and many carriers are oxidatively degraded during the processing of the masterbatch, making the film more brittle and poor in practicability