有机改性蒙脱土/硼酸锌/硅橡胶泡沫复合材料制备及阻燃抑烟性能  

Preparation,Flame Retardancy and Smoke Suppression Properties of Organically Modified Montmorillonite/Zinc Borate/Silicone Rubber Foam Composites

作　　者：刘博 冀贤 王春雨 宫花 孙璐 康付如 Bo Liu;Xian Ji;Chunyu Wang;Hua Gong;Lu Sun;Furu Kang(College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Construction Research Institute Testing Center,Beijing 101200,China)

机构地区：[1]西安科技大学安全科学与工程学院,陕西西安710054 [2]建研院检测中心有限公司,北京101200

出　　处：《高分子材料科学与工程》2024年第5期56-66,共11页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51904233,52074218);陕西省科技创新团队(2020TD-021)。

摘　　要：为提高硅橡胶泡沫材料(SRF)的阻燃抑烟性能,采用室温硫化法制备了长链季铵盐(CTAB)有机改性蒙脱土(OMMT)/硼酸锌(ZB)/SRF复合材料。通过极限氧指数(LOI)、水平-垂直燃烧试验(UL-94)、锥形量热分析和热重-差热分析研究了复合材料的阻燃抑烟性能。结果表明,添加2%OMMT和1%ZB的SRF阻燃性能明显提高,LOI为29.5%,阻燃等级达到V-0等级,热释放速率峰值(PHRR)和总热释放量(THR)较纯SRF分别降低26.6%和27.0%,烟释放速率峰值(PSPR)和烟总释放量(TSP)比纯SRF分别降低67.8%和66.5%。添加OMMT和ZB之后,SRF表现出了良好的热稳定性和更致密的炭层,OMMT和ZB存在一定的气相协同阻燃效应。研究结果为阻燃复合材料的研发提供了数据参考。In order to improve the flame retardancy and smoke suppression properties of silicone rubber foam(SRF),long-chain quaternary ammonium salt(CTAB)organic modified montmorillonite(OMMT)/zinc borate(ZB)/SRF composites were prepared by room temperature vulcanization.The flame retardancy and smoke suppression properties of composites were studied by limiting oxygen index(LOI),horizontal-vertical combustion test(UL-94),conical calorimeter tests and thermogravimetric-differential thermal analysis.The results show that the flame retardant performance of SRF with the addition of 2%OMMT and 1%ZB is significantly improved,the LOI is 29.5%,the flame retardant grade reaches V-0 grade,the peak heat release rate(PHRR)and total heat release(THR)are 26.6%and 27.0%lower than those of pure SRF,and the peak smoke release rate(PSPR)and total smoke release(TSP)are 67.8%and 66.5%lower than those of pure SRF respectively.After adding OMMT and ZB,SRF shows good thermal stability and a denser carbon layer,and OMMT and ZB have certain gas-phase synergistic flame retardant effects.The research results provided a data basis and guiding significance for the research and development of flame retardant composites.

关 键 词：硅橡胶泡沫 阻燃性能 蒙脱土 硼酸锌 

分 类 号：TB332[一般工业技术—材料科学与工程]