【摘要】 本文合成制备了SA/EPDM隔热复合材料,研究了不同SA/EPDM含量比例以及添加阻燃剂后的复合材料的隔热性能、热稳定性能以及力学性能。当火源温度为300℃和500℃时,SA含量为70%的复合材料背面温度维持在130℃和250℃,导热系数为0.2253 W/m·K。热失重分析结果表明,SA含量的升高虽然没有延缓材料的高温降解速率,但是SA含量的加入减小了复合材料玻璃化转变放热量,在促进材料成炭中起到了积极作用,残碳量最高为50.67%,并且复合材料力学性能表现优秀,拉伸强度可达22.45 MPa,断裂伸长率可达661.90%。更多还原

【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%.更多还原