新型防火隔热复合膨胀珍珠岩板材的开发与研究.pdfVIP

学兔兔 全国中文核心期刊 斩癯建巍 新型防火隔热复合一n~…ois、珍珠岩板材的开发与研究 石璞 ，刘建龙 ，李福枝 ，张弛一 (1．湖南工业大学 包装新材料与技术重点实验室，湖南 株洲 412007；2．湖南工业大学 土木工程学院，湖南 株洲 412007) 摘要：针对普通膨胀珍珠岩板材防火能力差、抗冲击能力不强等缺点，通过添加适量的耐高温粉和聚醋酸乙烯胶黏剂(白乳 胶)，制备了防火能力优异、抗冲击能力好的复合膨胀珍珠岩板材。通过优化配方所制备的40mm厚板材，在高温下灼烧90min后背 火温度仅102℃，抗压强度为O．81 MPa，导热系数为O．05～0．07 W／(m·K)，可经受 1．5 m高16次跌落试验。通过电镜分析得知，该板 材防火隔热性能优良的重要原因为灼烧时迎火面附近处形成的致密陶瓷结构阻止了火焰和热量的传递。 关键词：膨胀珍珠岩；板材；耐高温粉；复合防火；隔热；抗冲击 中图分类号：TU55 1．34 文献标识码：B 文章编号：1001—702X(2011)01—0068—03 Development and research of a new kind of perlite composite plank with fireproofing and heat insulation SH，n ，己，U Jianlo ，LI Fuzhi ，ZHANG Chi (1．Key Laboratory of New Material and Technology for Package，Hunan University ofTechnology，Zhuzhou 412007，Hunan，China； 2．College of Civil Engineering，Hunan University of Technology，Zhuzhou 412007，Hunan，China) Abstract：Aimed at unreliable fireproofing and bad impact-resistant ability of conlmon perlite composite plank，a new kind of perlite composite plank with excellent fireproofing and impact——resistant ability was prepared by mixing high temperature—。resistant powder and PVAC latex．Through optimizing the formulation，40 millimeter thickness sample was ignited by fierce fire，the back temperature of the test sample was only 102℃after 90 minute ignition．The compressive stress was 0．8 1 MPa，thermal conductivity was 0．05-0．07 W／(m· K)，and can resist 1 6 impact fall off from 1．5 meter high．SEM photos show that a compact ceramics framework was formed nearby the ignition surface．And it can resist the penetration of fire and heat．This is the most important reason why the