Toughened and modified PBT resin and preparation method thereof

Abstract

The invention relates to the field of modified PBT resin, and discloses toughened and modified PBT resin and a preparation method thereof. The toughened and modified PBT resin is prepared from the following raw materials in parts by weight: 50 to 80 parts of PBT and 5 to 30 parts of an SEBS-g-MAH copolymer. According to the invention, the SEBS-g-MAH copolymer is adopted as the flexibilizer, the interfacial bonding effect between the SEBS-g-MAH copolymer and PBT is strong, and the SEBS-g-MAH copolymer is uniformly dispersed, so that the mechanical properties of PBT can be better improved compared with SEBS.

Description

technical field

[0001] The invention relates to the field of modified PBT resins, in particular to a toughened and modified PBT resin and a preparation method thereof. Background technique

[0002] Polybutylene terephthalate (referred to as PBT) is one of the toughest engineering thermoplastic materials, and it is also a variety of general engineering resins whose industrialization started late but has developed rapidly. It has excellent comprehensive performance and is widely used in various fields, such as: electronic devices, automobile industry, mechanical equipment and parts of precision instruments.

[0003] The strength, chemical stability, electrical insulation, and thermal stability of PBT resin are very excellent, but pure PBT has shortcomings such as product warpage, poor toughness, and low notched impact strength, which limit its development in many fields. Therefore, It is necessary to develop a toughened modified PBT resin.

[0004] The Chinese patent documen...

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