摘要
将固/液复合阻燃剂硼酸锌-磷酸三(2-氯乙基)酯-氢氧化镁-氢氧化铝(ZB-TCEP-MH-ATH)引入双环戊二烯(DCPD)溶液中制备了DCPD稳定分散液,并通过前端开环易位聚合(FROMP)制备了阻燃聚双环戊二烯(PDCPD)复合材料。研究了复合阻燃剂的组分及含量对DCPD的聚合动力学、复合材料的热稳定性、力学性能和阻燃性能的影响。结果表明,复合阻燃剂会影响DCPD的反应活性,降低材料的聚合焓和固化度。随着阻燃剂含量的增加,聚合焓降低程度增大,但在相同阻燃体系中,材料的固化度仅受阻燃剂种类的影响,且材料的储能模量和玻璃化转变温度与材料的固化度线性相关。复合阻燃剂的引入会降低PDCPD复合材料的拉伸强度,但明显提高了材料的热稳定性、断裂伸长率、冲击强度和阻燃性,当ZB-TCEP-MH-ATH的含量为55%时,材料的极限氧指数(LOI)达41%,并通过UL-94 V-0级,材料的热释放速率峰值(pHRR)和燃烧增长速率(FIGRA)值分别仅为PDCPD的8.51%和3%,烟生成速率峰值(pSPR)降幅达80.36%,火灾性能指数(FPI)提高了8倍,具有较好的综合性能。
The solid/liquid composite flame retardant zinc borate-tris(2-chloroethyl)phosphate-magnesium hydroxide-aluminum hydroxide(ZB-TCEP-MH-ATH)were introduced into dicyclopentadiene(DCPD)solution to prepare the DCPD stable dispersion,and then the flame retardant polydicyclopentadiene(PDCPD)composites were prepared by frontal ring-opening metathesis polymerization(FROMP).The effects of the composition and content of the composite flame retardant on the polymerization kinetics of DCPD,thermal stability,mechanical and flame retardant properties of the PDCPD composites were studied.The results show that the composite flame retardant will affect the reaction activity of DCPD and reduce the polymerization enthalpy and curing degree of the materials.With the increase of the amount of flame retardant,the polymerization enthalpy decreases more obviously,however,for the composites with the same flame retardant system,the curing degree of the material is only affected by the type of flame retardant,and the storage modulus and glass transition temperature of the material are linearly related to the curing degree of the materials.Also,the introduction of composite flame retardants reduces the tensile strength of PDCPD composites,but significantly improves the thermal stability,elongation at break,impact strength and flame retardancy of the materials.When the content of ZB-TCEP-MH-ATH is 55%,the limiting oxygen index(LOI)of the material reaches 41%and passes UL-94 V-0 test.In particular,the peak heat release rate(pHRR)and the fire growth rate(FIGRA)values of the material are only 8.51%and 3%of PDCPD,respectively,and the peak smoke production rate(pSPR)is reduced by 80.36%,and the fire performance index(FPI)is increased by 8 times,which shows good comprehensive performance.
作者
王平
凌嘉诚
杨利
许琼
刘文秀
冯绍杰
Ping Wang;Jiacheng Ling;Li Yang;Qiong Xu;Wenxiu Liu;Shaojie Feng(School of Materials and Chemical Engineering,Anhui Jianzhu University,Anhui 230601,China;Anhui Province International Research Center on Advanced Building Materials,Anhui Jianzhu University,Hefei 230601,China;National and Local Joint Engineering Research Center for Special Wire and Cable Branch Center of Anhui Jianzhu University,Hefei 230601,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2023年第5期59-67,共9页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51903002)
安徽省科技重大专项项目(202103a05020031)
安徽省高校自然科学杰出青年科研项目(2022AH020024)
安徽省高校哲学社会科学重大研究项目(2022AH040047)
安徽建筑大学博士启动基金(2019QDZ22)
安徽高校协同创新项目(GXXT-2019-017)
安徽省博士后研究人员科研活动经费资助项目(2020B413)
安徽省高校省级自然科学研究项目(YJS20210509)。
关键词
聚双环戊二烯
复合阻燃剂
聚合动力学
阻燃性能
前端开环易位聚合
polydicyclopentadiene
composite flame retardant
polymerization kinetics
flame retardancy
frontal ringopening metathesis polymerization
