High-performance environment-friendly modified PBT (polybutylene terephthalate)

Abstract

The invention relates to the technical field of new materials, and particularly relates to high-performance environment-friendly modified PBT (polybutylene terephthalate) which is prepared from a component A and a component B, wherein the component A is a PBT raw material, and the PBT raw material is an original new material or is prepared by mixing a reclaimed material with a new material; and the component B is an auxiliary material, and the auxiliary material at least comprises halogen-free flame retardant, toughener, compatilizer and a glass fiber. In the preparation process, the high-performance environment-friendly modified PBT comprises the following specific components in percentage by weight: 15-20% of halogen-free flame retardant, 5-10% of toughener, 3-5% of compatilizer, 25-35% of glass fiber and the balance of PBT raw material; and the preparation process comprises the following steps: performing molecular decomposition, recombining, and granulating. According to the invention, the high-performance environment-friendly modified PBT is prepared by using PBT as a carrier and adding the halogen-free flame retardant, the toughener, the compatilizer, the glass fiber and other auxiliary materials; the invention can enhance the fire retardance degree and physical properties of the product, and ensures that the product meets the environmental requirements for no halogen and no phosphorus and conforms to industrial utilization; and the product is free of I and Br, thereby doing no harm to environment and health of people.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to PBT materials. Background technique [0002] PBT material refers to a type of plastic composed of polybutylene terephthalate as the main body. The products made can be widely used in various electronic products such as computers, automotive connectors, cooling fans, AC / DC plugs, and transformer skeletons. , Electrical products. [0003] Products made of PBT materials usually refer to modified varieties, PBT (abbreviation for polybutylene terephthalate), was first developed by German scientist P. Schlack in 1942, and then American Celanese company (now Ticona) Carried out industrial development and was listed under the trade name of Celanex. It was put on the market in 1970 with 30% glass fiber reinforced plastics. With the wide application of PBT materials, the performance requirements of PBT materials have also increased. If flame retardancy is required , and have suffic...

AI Technical Summary

Problems solved by technology

Domestic PBT technology development began in the 1970s. However, flame-retardant polymer materials still mainly use halogen-containing flame-retardant systems. Once this bromine-containing system is burned, it will emit a large amount of toxic gases and smoke. If it is recycled and incinerated Often cause secondary pollution, seriously endangering the environment and human health

In response to the above problems, the country has been adjusting the product structure of flame retardants and increasing the development of efficient, stable and environmentally friendly flame retardants; however, it has not yet been found in China to meet the requirements of environmental protection and fire resistance to UL94-V0. There are products that can meet the above requirements at the same time