摘要
通过物理掺入六氯环三磷腈(HCCP)、八乙烯基倍半硅氧烷(OvPOSS)、磷酸三乙酯(TEP)制备聚甲基丙烯酸甲酯(PMMA)复合材料,分析HCCP对OvPOSS_(_(1%))/PMMA复合体系的热稳定性和阻燃性能影响。研究发现,HCCP中的—N=P六元环结构和N、P、Cl元素能够与OvPOSS中的Si—O八面体结构和Si元素协同阻碍PMMA分子链运动和热分解。当HCCP质量分数为20%时,PMMA复合材料失重5%和50%温度分别为196.6℃和381.3℃,玻璃化转变温度为174℃,残炭率为15.75%,达到UL 94 V-1级阻燃。OvPOSS_(_(1%))/PMMA复合体系中添加10%的TEP可有效缓解其界面相容性差问题,但TEP会与HCCP发生亲核取代反应,致使复合体系透明度明显下降。
Polymethyl methacrylate(PMMA)composites were prepared by physical blending of hexachlorocyclotriphosphonitrile(HCCP),octavinyl sesquisiloxane(OvPOSS),and triethyl phosphate(TEP).The effect of HCCP on the thermal stability and flame retardancy of OvPOSS_(_(1%))/PMMA composite system was investigated.The study found that the six-membered ring structure of—N=P in HCCP and the elements N,P,and Cl can work in synergy with the Si—O octahedral structure and the Si element in OvPOSS to hinder the movement and thermal decomposition of the PMMA molecular chains.The temperatures at which the PMMA composite loses 5%and 50%of its weight were 196.6℃and 381.3℃,respectively,the glass transition temperature was 174℃,and the carbon residue rate of PMMA composite was 15.75%when the mass fraction of HCCP was 20%,reaching UL 94 V-1 flame retardancy.It could effectively alleviate the problem of poor interface compatibility when added 10%TEP in OvPOSS_(_(1%))/PMMA composite system.However,TEP would have a nucleophilic substitution reaction with HCCP,resulting in a significant decrease in the transparency of the composite system.
作者
田嘉睿
王丹
樊达鑫
王婷
刘晓蓓
张航瑜
袁新强
宋文堂
TIAN Jiarui;WANG Dan;FAN Daxin;WANG Ting;LIU Xiaobei;ZHANG Hangyu;YUAN Xinqiang;SONG Wentang(School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong 723000,China;Kanglong Chemical(Ningbo)Technology Development Co.,Ltd.,Ningbo 315336,China;Shaanxi Jianke Energy Saving Development Co.,Ltd.,Hanzhong 724200,China)
出处
《塑料科技》
北大核心
2025年第6期40-45,共6页
Plastics Science and Technology
基金
陕西省重点研发计划(2024SF-YBXM-638)
陕西理工大学大学生创新创业训练计划项目(S202410720102)。
