Hyperbranched resin toughening PBT (polybutylece terephthalate) material and preparation method thereof

Abstract

The invention discloses a hyperbranched resin toughening PBT (polybutylece terephthalate) material, which is prepared from the following raw materials in parts by weight: 60 to 80 parts of PBT, 15 to20 parts of kaolinite, 15 to 20 parts of saturated octadecyl amide, 5 to 8 parts of aluminum dihydrogen phosphate, 5 to 10 parts of dimethyletnanolamine, 6 to 8 parts of glass fiber, 4 to 7 parts of toughening agents, 1 to 3 parts of Tissuemat E and 1 to 3 parts of antioxidants 168. The cladded curing agent is introduced for improving the content of functional groups with the reaction capability with epoxy resin in the material; meanwhile, microcapsule curing agents can be slowly released through microcapsule breaking under a certain condition; the curing behaviors are completed, so that the goal of controlling the filling glue curing process of the material and the epoxy resin can be achieved; the interface bonding performance between the material and the epoxy resin is improved; in addition, hyperbranched resin in the toughening agents has good compatibility with the PBT; through the matched use with other toughening agents, the compatibility and the processing performance of the PBTmaterial can be improved; the toughness of the PBT composite material and the bonding force of the PBT composite material with the metal material can be improved.

Description

Background technique [0001] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white [0002] 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. [0003] 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 that can cause spark plug discharge. Therefore, in order to prevent the ignition coil from being electrically broken down under high voltage and improve the insulation strength of the ignition coil components, t...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN104610711B discloses a PBT material with good epoxy resin adhesion and its preparation method. Through the synergistic effect of each component, the material has excellent anti-aging performance, and the introduction of reactive functional groups with the ability to react with epoxy resin improves the interface adhesion with epoxy resin, but the viscosity of epoxy resin changes during use Rapid curing process is difficult to control, and rapid curing results in reduced encapsulation efficiency