Study on preparation and performance of silica aerogel/EPDM composite thermal insulation material

doi:10.19936/j.cnki.2096-8000.20220128.013

Abstract

Abstract: In this paper, SA/EPDM thermal insulation composite materials were synthesized and prepared, and the thermal insulation performance, thermal stability performance and mechanical properties of the composite materials with different SA/EPDM content ratios and the addition of flame retardants were studied. When the fire source temperature is 300 ℃ and 500 ℃, the back surface temperature of the composite material with 70% SA content is maintained at 130 ℃ and 250 ℃, and the thermal conductivity is 0.2253 W/m·K. The thermal weight loss analysis shows that although the increase of SA content does not delay the high-temperature degradation rate of the material, the addition of SA content reduces the heat of glass transition of the composite material, and plays a positive role in promoting the carbon formation of the material. The highest is 50.67%, and the mechanical properties of the composite material are excellent, the tensile strength can reach 22.45 MPa, and the elongation at break can reach 661.90%.

Key words: silica aerogel, EPDM rubber, insulation, composites

CLC Number:

TB332

WANG Zhen-hao, CHEN Bo, GAO Fei, WANG Shu-ping, LI Xiang-mei, LIU Jing-bing. Study on preparation and performance of silica aerogel/EPDM composite thermal insulation material[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(1): 86-90.

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