Preparation method of fluorinated polyether-ether-ketone heat-conducting and electromagnetic shielding composite material

• Main Authors: GU YUXUAN, WANG YIFAN, BAI YAGENG, MOU JIANXIN, HE YASHU, CHEN RUI, LIAN PENGBO
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention provides a preparation method of a fluorinated polyether-ether-ketone heat-conducting and electromagnetic-shielding composite material. The preparation method comprises the following steps: synthesizing soluble fluorinated polyether-ether-ketone with different fluorination degrees by controlling the ratio of hexafluorobisphenol A to hydroquinone; and mixing the fluorinated polyether-ether-ketone with the carbon nanotube and graphene nanosheet composite filler, and carrying out melting and hot pressing to prepare the fluorinated polyether-ether-ketone composite material. The fluorine-containing groups are introduced, so that the interface bonding force between the filler and a polymer matrix is enhanced, and the interface scattering of phonons is reduced; the contact area between the fillers is increased through the synergistic carbon nanotubes and the graphene nanosheets, and a heat-conducting and electric-conducting path is perfected; molecular-level solution blending improves the distribution