Polybutylene terephthalate composition and preparation method thereof

Abstract

The invention relates to a polybutylene terephthalate composition and a preparation method thereof. The polybutylene terephthalate composition is prepared from polybutylene terephthalate A resin, polybutylene terephthalate B resin, ethylene-octene copolymer grafted glycidyl methacrylate, hollow glass beads, polyhedral oligomeric silsesquioxane polymer, a titanate coupling agent, polytetrafluoroethylene resin, hyperbranched polyester polymer, erucyl amide, N,N'-bis(2,2,6,6-tetramethyl)4-piperidyl)-1,3-benzenedicarboxamide and bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate. The composition has excellent mechanical properties, processability and low dielectric constant, and can be applied to shells, cladding and protective materials and the like of 5G base stations, micro base station systems, data communication terminals, antennas and radio frequency modules.

Description

technical field [0001] The invention relates to the field of materials, in particular to a polybutylene terephthalate composition and a preparation method thereof. Background technique [0002] Dielectric materials, also known as dielectrics, are electrical insulating materials. According to performance, there are high dielectric materials and low dielectric materials. For low dielectric materials, with the rapid development of electronic information technology, electronic products are developing in the direction of lightweight, high performance and multifunctionality, and it is increasingly necessary to develop low dielectric constant ( D. k <3) Materials. At the same time, with the advent of the 5G era, the requirements for the transmission speed and loss of electronic signals are higher than those of 4G products. Usually, 4G products only require the dielectric constant of resin materials to be less than 3.7 (1GHz), while 5G products require The dielectric constant...

AI Technical Summary

Problems solved by technology

From the structural point of view, there are benzene rings and polar ester groups that are difficult to move in the repeating structural unit of PBT. Due to the formation of a conjugated system between the benzene ring and the ester group, the molecule is more rigid and the molecular chain is more flexible. Low, so that the notched impact strength of PBT is low

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