High-thermal-conductivity wave-absorbing rubber sheet and preparation method thereof

• Main Authors: LI HONGXIA, WANG JUNYAN, CHU JUNFENG, YANG JIAN, HUANG CONGGANG, ZHANG JIYANG
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a high-thermal-conductivity wave-absorbing rubber sheet and a preparation method thereof. The silicon carbide phase change composite material is prepared from the following raw materials in parts by mass: 100 parts of vinyl silicone oil, 200 to 800 parts of carbonyl iron, 100 to 300 parts of silicon carbide, 100 to 300 parts of phase change microcapsules, 400 to 1000 parts of diamond, 2 to 8 parts of a cross-linking agent, 0.1 to 0.8 part of an inhibitor, 0.1 to 0.8 part of a platinum catalyst and 1 to 5 parts of a coupling agent. The preparation method comprises the following steps: adding the vinyl silicone oil, the carbonyl iron, the silicon carbide, the phase change microcapsules, the diamond and the coupling agent into a stirrer, uniformly stirring at a high temperature, after the materials are cooled, adding the cross-linking agent, the inhibitor and the platinum catalyst, uniformly stirring, and finally, carrying out vacuum defoaming, rolling into sheets and carrying out hot air