摘要
以自制的锌铝型纳米层状双氢氧化物(ZnAl-LDH)(n(Zn^2+):n(Al^3+)=3:1)与聚丙烯(PP)熔融共混制备了PP/ZnAl-LDH纳米阻燃材料,利用锥形量热仪及场发射扫描电镜,表征并分析了PP/ZnAl-LDH纳米阻燃材料的燃烧特性.结果表明,与纯样PP相比,PP/ZnAl-LDH纳米复合材料的热释放速率(HRR)和CO释放率均大幅降低,不同比例PP/ZnAl-LDH的纳米复合材料燃烧完成后,得到不同比率的残渣.研究结果表明:ZnAl-LDH的加入降低了材料的热危害和毒气危害,并通过对材料的催化成炭作用发挥了较好的阻燃作用,降低了材料的火灾危险性.且当ZnAl-LDH的添加用量为2.1%-3.5%时,PP/ZnAl-LDH纳米复合材料达到了最佳的阻燃效果。
PP/ZnAl-LDH nano-flame retardants were prepared by melt blending of self-made zinc-aluminium nano-layered double hydroxides (ZnAl-LDH )( n( Zn^2+):n( Al^3+)= 3. 1 ) and polypropylene (PP). The combustion characteristics of PP/ZnAl-LDH Nano-flame retardant materials were characterized and analyzed by cone calorimeter and field emission scanning electron microscopy. The results showed that the heat release rate ( HRR ) and CO release rate of PP/ZnAl-LDH nanocomposite were significantly lower than those of pure PP. After combustion, nanocomposite with different proportions of PP/ZnAl-LDH had different ratios of residual. The results showed that the addition of ZnAl-LDH reduced the thermal hazards and toxic gas hazards of the materials and played a good flame retardant effect by char forming, and the fire hazard of the materials was reduced. The best flame retardant effect could be achieved, when the amount of ZnAl-LDH added was 2.1%-3.5%.
作者
彭敏
杨玲
史聪灵
PENG Min;YANG Ling;SHI Congling(College of Safety & Environmental Engineering,Capital University of Economics & Business, Beijing 100070,China;Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety,China Academy of Safety Science and Technology, Beijing 100012,China)
出处
《塑料》
CAS
CSCD
北大核心
2019年第2期14-16,21,共4页
Plastics
基金
国家自然科学基金(51622403)
北京市科技专项(Z171100001117145)
十三五国家重点研发计划(2016YFC0802500)
中国安全生产科学研究院“万人计划”入选人才特殊支持经费项目(WRJH201801)
中国安全生产科学研究院基本科研业务费专项(2018JBKY02)
首都经济贸易大学研究生科技创新项目
