Low-temperature-resistant PBT material with epoxy resin cohesiveness and preparation method thereof

Abstract

The invention discloses a low-temperature-resistant PBT material with epoxy resin cohesiveness. The low-temperature-resistant PBT material is prepared from, by weight, 60-80 parts of PBT, 8-10 parts of thermoplastic polyester elastomers, 15-20 parts of cardanol amine, 15-20 parts of polyvinyl alcohol microspheres, 5-8 parts of sodium dodecyl sulfate, 5-10 parts of gelatin, 1-3 parts of styrene butadiene acrylic ester, 6-12 parts of glass fiber and 1-3 parts of a maleic anhydride-styrene copolymer. According to the low-temperature-resistant PBT material with the epoxy resin cohesiveness, the content of functional groups which have the reaction capacity with epoxy resin in the material is increased by introducing a coated curing agent, the microcapsule curing agent can break microcapsules to be slowly released under certain conditions to complete a curing behavior, therefore, the purpose of controlling the pouring sealant curing process of the material and the epoxy resin is achieved, and the interface cohesiveness between the material and the epoxy resin is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-temperature-resistant PBT material with epoxy resin adhesion and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white [0003] Color Translucent to opaque, crystalline thermoplastic polyester. It has excellent electrical properties, high heat resistance, toughness, fatigue resistance, self-lubrication, low coefficient of friction, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in a humid environment. Good, so it is widely used as engineering plastics in automobiles, electronic and electrical components. [0004] The engine ignition coil is the main component of the engine ignition system. Its function is to increase the low voltage of the car battery to a high voltage of 20kv to 40kv...

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN 104610711 B discloses a PBT material with good epoxy resin adhesion and its preparation method. The invention uses antioxidant 24-44, antioxidant 168, antioxidant 1010 and carbon free scavenger HP136 The compounding, through the synergistic effect of each component, makes the material have excellent anti-aging performance, introduces reactive functional groups that have the ability to react with epoxy resin, and improves the interfacial adhesion with epoxy resin, but when using epoxy resin Rapid viscosity changes make it difficult to control the curing process, and rapid curing results in reduced encapsulation efficiency