High-impact-resistance polybutylene terephthalate (PBT) material having epoxy resin bonding property, and preparation method of PBT material

Abstract

The invention discloses a high-impact-resistance polybutylene terephthalate (PBT) material having epoxy resin bonding property. The material is prepared from the following raw materials in parts by weight: 60-80 parts of PBT, 15-20 parts of cashew phenol amine, 15-20 parts of polyvinyl alcohol micro-spheres, 5-8 parts of sodium dodecyl sulfate, 5-10 parts of gelatin, 6-10 parts of alkali-free glass fibers, 3-6 parts of an impact resistant modifier, 1-3 parts of polyethylene wax PE4221 and 1-3 parts of an antioxidant 1076. The functional group content which is in a clad curing agent lifting material and has reaction capacity with epoxy resin is introduced into the PBT material, and a microcapsule curing agent can break microcapsules under certain conditions so as to be slowly released, so that the curing behavior is completed, the aim of controlling a curing process of material and epoxy resin pouring sealant is achieved, and the interface bonding property between the material and epoxy resin is improved; furthermore, the impact resistant modifier and the alkali-free glass fibers are combined for use, so that the impact resistance, the compatibility performance and the dispersing performance of the PBT material are welled balanced; therefore, the high-impact-resistance PBT composite material is obtained.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high impact resistance 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] Translucent to opaque, crystalline thermoplastic polyester. It has excellent electrical properties, high heat resistance, toughness, fatigue resistance, self-lubrication, low friction coefficient, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in humid environments. 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 raise the low voltage of the car battery to a high voltage of 20kv to 40kv that can cause ...

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