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: 25.08.2023
• 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 invention discloses a liquid crystal polyester composition which comprises the following components in parts by weight: 50-100 parts of liquid crystal polyester; 12 to 40 parts of filler; 0.1 to 3 parts of a coupling agent; 0.2 to 0.6 part of linear low density polyethylene; 1 to 4 parts of polyarylester; wherein the filler is selected from fibrous filler and flaky filler, and the weight ratio of the fibrous filler to the flaky filler is (0.6-50): 1; the liquid crystal polyester is formed by taking at least two of terephthalic acid, biphenol, 6-hydroxy-2-naphthoic acid and p-hydroxybenzoic acid and acetaminophen as repetitive units. According to the liquid crystal polyester composition disclosed by the invention, through compounding of the fibrous filler and the flaky filler and compounding of the linear low-density polyethylene and the polyarylester, higher-degree enrichment of the wear-resistant filler in a material resin skin layer can be realized, so that the wear resistance is remarkably improved, an