PA6-based thermal conductive composite material and preparation method thereof

• Main Authors: CHEN QIAN, ZHAO QIONGHUI, LI DUXIN
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2019
• 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 provides a PA6-based thermal conductive composite material and a preparation method thereof. High-flowability PA6, HDPE (high-density polyethylene), surface treated thermal conductive fillers and maleic anhydride bulking agents are uniformly premixed and added from a main feeding port of a double-screw extruder, carbon fibers are added from a glass fiber port, extruded and granulatedto obtain the PA6-based thermal conductive composite material. The composite material prepared by the preparation method has high thermal conductivity, high thermal diffusion coefficient, good mechanical performances and excellent comprehensive performances, is easy to form and can be widely applied to the field of thermal conductive materials such as thermal conductive plastic pipelines, automobile parts, LED (light-emitting diode) lamp cooling devices and the like, and the parts can be prepared by an injection molding process. 本发明提供了种PA6基导热复合材料及其制备方法。将高流动性PA6、HDPE、经表面处理的导热填料、马来酸酐增容剂预混均匀，由双螺杆挤出机主喂料口加入，碳纤维从玻纤口加入，进行挤出