학술논문
SiO2气凝胶/TPO弹性体复合材料的制备及性能研究 / Preparation and Property Study on SiO2 Aerogel/TPO Elastomer Composites
Document Type
Academic Journal
Author
李慧; 张鹏宇; 罗建国; 赵迪; 刘彤; 孙倩; 王冬梅; 王婉申; Li Hui; Zhang Pengyu; Luo Jianguo; Zhao Di; Liu Tong; Sun Qian; Wang Dongmei; Wang Wanshen
Source
中国建筑防水 / China Building Waterproofing. (12):7-30
Subject
Language
Chinese
ISSN
1007-497X
Abstract
制备了SiO2 气凝胶/TPO弹性体复合材料,研究了SiO2 气凝胶添加量对复合材料导热系数、吸水性能、浸水后力学性能的影响.结果表明:随着SiO2 气凝胶添加量的增加,复合材料的导热系数逐渐减小,且减小幅度趋缓;SiO2 气凝胶添加量越大,复合体系的吸水率越大;浸水后复合材料的拉伸强度、断裂伸长率随着SiO2 气凝胶添加量的增加呈先增大后减小的趋势.从SiO2 气凝胶/TPO弹性体复合材料断面的SEM形貌图可以看出,SiO2 气凝胶添加量增加会导致基材有褶皱产生.综合性能和成本分析,较为合适的SiO2 气凝胶添加量为 1%～3%,此时制得的SiO2 气凝胶/TPO弹性体复合材料综合性能较为优异.
SiO2 aerogel/TPO elastomer composites are prepared,and the effects of the addition amount of SiO2 aerogel on the thermal conductivity,water absorption and mechanical properties of the composites after immersion are studied.The results show that the thermal conductivity of the composites decreases gradually with the increase of the addition of SiO2 aerogel,and the decrease amplitude tends to slow down;the greater the amount of SiO2 aerogel added,the greater the water absorption of the composite system;the tensile strength and elongation at break of the composites after immersion increased first and then decreased with the increase of SiO2 aerogel content.From the SEM topography of the section of SiO2 aerogel/TPO elastomer composites,it can be seen that the increase in the addition of SiO2 aerogel will lead to wrinkles in the substrate.According to the comprehensive performance and cost analysis,the appropriate addition amount of SiO2 aerogel is 1%～3%.At this time,the SiO2 aerogel/TPO elastomer composites have excellent comprehensive performance.
SiO2 aerogel/TPO elastomer composites are prepared,and the effects of the addition amount of SiO2 aerogel on the thermal conductivity,water absorption and mechanical properties of the composites after immersion are studied.The results show that the thermal conductivity of the composites decreases gradually with the increase of the addition of SiO2 aerogel,and the decrease amplitude tends to slow down;the greater the amount of SiO2 aerogel added,the greater the water absorption of the composite system;the tensile strength and elongation at break of the composites after immersion increased first and then decreased with the increase of SiO2 aerogel content.From the SEM topography of the section of SiO2 aerogel/TPO elastomer composites,it can be seen that the increase in the addition of SiO2 aerogel will lead to wrinkles in the substrate.According to the comprehensive performance and cost analysis,the appropriate addition amount of SiO2 aerogel is 1%～3%.At this time,the SiO2 aerogel/TPO elastomer composites have excellent comprehensive performance.