EG/SIS/EPDM/PW hot-pressed phase-change material with thermoelectric conversion characteristic and preparation method and application of EG/SIS/EPDM/PW hot-pressed phase-change material

• Main Authors: XU FEN, ZHANG JUNHAO, XIA TINGFENG, HE HAIZHI, XU GUANGPENG, HAN CUNHAO, SUN LIXIAN, HUI SIYUE, ZHANG HUANZHI
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• 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 an EG/SIS/EPDM/PW hot-pressed phase-change material with thermoelectric conversion characteristics, which is prepared by melting, mixing and hot-pressing styrene-isoprene-styrene block copolymer SIS as a flexible matrix, ethylene propylene diene monomer EPDM as a flexible cross-linking reinforcing material, paraffin PW as a phase-change material and expanded graphite EG as a porous heat-conducting reinforcing material. The EG microstructure is a worm graphite nanosheet structure; the SIS, the EPDM and the PW are packaged in the densely arranged graphite nanosheets; good flexibility and bending performance are realized; and the packaging performance is achieved, and the internal PW does not leak under the high-temperature state and the external force of the load with the 100-time self weight. The preparation method comprises the following steps: 1, preparing a raw material expanded graphite; 2, preparing a flexible base material; 3, mixing the SIS/EPDM and the phase change material; 4,