Liquid crystal polyester composition as well as preparation method and application thereof

• Main Authors: ZHOU GUANGLIANG, JIANG SUJUN, LIU YAO, CHEN PINGXU, XIAO ZHONGPENG, YE NANBIAO, SONG CAIFEI
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The liquid crystal polyester composition comprises the following components in parts by weight: 40-55 parts of LCP (Liquid Crystal Polyester) resin; 12-20 parts of a spherical inorganic filler; 1-20 parts of mica powder; 1-30 parts of a fibrous inorganic filler; 1.8 to 15 parts of a compound surface modifier; wherein the compound surface modifier comprises ultra-high molecular weight polyethylene and bisphenol A polyarylester, and the weight ratio of the ultra-high molecular weight polyethylene to the bisphenol A polyarylester is (0.5-3): 1. Through a compound filler system of spherical inorganic filler/mica powder/fibrous inorganic filler, a filler with a hard surface is formed; through a surface modification system of ultra-high molecular weight polyethylene/bisphenol A polyarylester, the dispersion of a filler system can be effectively improved, the surface of a workpiece is smooth and hydrophobic, and meanwhile, the CTI value can be increased, so that compared with an existing modified LCP product, the li