PET flame-retardant film master batch, preparation method of PET flame-retardant film master batch and PET flame-retardant film product

Abstract

The invention discloses a PET (polyethylene glycol terephthalate) flame-retardant film master batch. Raw materials of the PET flame-retardant film master batch comprise decabromodiphenylethane, antimony trioxide, bisphenyl A bis(diphenyl phosphate), a 1010 antioxidant, a 168 antioxidant, diffusion oil, zinc borate and PBT (polybutylene terephthalate). The invention also discloses a preparation method of the PET flame-retardant film master batch and a PET flame-retardant film product. The PET flame-retardant film master batch has unique and reasonable formula design and takes a halogen and antimony synergistic flame retardance effect due to addition of the antimony trioxide and the decabromodiphenylethane; as a carrier, the PBT solves the problems of compatibility and toughness; the bisphenyl A bis(diphenyl phosphate) has effects of plastification and synergistic flame retardance; the antioxidants take an effect of reducing oxidation and degradation of the carrier and a matrix in the high temperature machining process; the diffusion oil takes an effect of improving dispersibility and compatibility; the zinc borate takes effects of carrying out synergistic flame retardance, improving incarbonization and particularly suppressing smoke and preventing drip melting; the PET flame-retardant film product prepared by adopting the PET flame-retardant film master batch has good toughness, high tensile strength and a good flame-retardant effect (which can reach the V0 grade), is low in cost, adopts a simple preparation process, is easy to implement and is beneficial to wide popularization and application.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant films, and in particular relates to a PET flame-retardant film masterbatch, a preparation method thereof, and a PET flame-retardant film product. Background technique [0002] PET flame retardant film is a new technology and technical problem at home and abroad. In the international sense, there is only Mitsubishi in Japan that is flame-retardant V0 grade and has excellent mechanical properties. Its technology is in a monopoly position in the confidential field, and its products are expensive. 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, dispersibili...

AI Technical Summary

Problems solved by technology

Its technology is in a monopoly position in the confidential field, and its products are expensive

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