Bi-DOPO Structure Flame Retardants with or without Reactive Group: Their Effects on Thermal Stability and Flammability of Unsaturated Polyester
Bi-DOPO Structure Flame Retardants with or without Reactive Group: Their Effects on Thermal Stability and Flammability of Unsaturated Polyester
复制标题
带或不带反应基团的Bi-DOPO结构阻燃剂：对不饱和聚酯热稳定性和可燃性的影响
DOI：
10.1021/acs.iecr.7b00711
复制
发表时间：
2017-05-24
影响因子：
4.2
通讯作者：
Wang, Yu-Zhong
中科院分区：
文献类型：
--
作者：
Cao, Yuan;Wang, Xiu-Li;Wang, Yu-Zhong
合成了一种新型反应型含磷阻燃剂1，4-亚苯基-双（（6-氧代-6H-二苯并[c，e][1，2]-氧杂磷酰基）亚甲基）二丙烯酸酯（TDCAA-DOPO），该阻燃剂具有两个对称的9，10-二氢-9-氧杂-10-磷杂菲蒽-10-氧化物结构（bi-DOPO），并与不饱和聚酯树脂（UPR）交联制备了阻燃UPR（FR-UPR）。为了明确双DOPO结构和交联反应对不饱和聚酯树脂热稳定性和阻燃性的影响，使用了一种添加型阻燃剂1，4-亚苯基-双（（6-氧代-6H-二苯并[c，e][1，2]-氧磷酰基）甲醇）（TDCA-DOPO）作为对比。结果表明，TDCAA-DOPO或TDCA-DOPO的加入降低了UPR的峰值放热速率（PHRR）和总放热速率（THR），提高了极限氧指数（LOI）。与TDCA-DOPO相比，反应型TDCAA-DOPO赋予FR-UPR更高的热稳定性。
A novel reactive phosphorus-containing flame retardant 1,4-phenylene-bis((6-oxido-6H-dibenz[c,e][1,2]-oxaphosphorinyl) methylene) diacrylate (TDCAA-DOPO), with two symmetrical 9,10-dihydro-9-oxa-10-phosphaphena-nthrene-10-oxide structure (bi-DOPO), was synthesized and combined with unsaturated polyester resin (UPR) via cross-linking to prepare flame-retardant UPR (FR-UPR). To make clear both the effects of the bi-DOPO structure and the cross-linking reaction on the thermal stability and flame retardancy of UPR, an additive flame retardant that also owned bi-DOPO structure but without a vinyl bond, 1,4-phenylene-bis((6-oxido-6H-dibenz[c,e][1,2]-oxaphosphorinyl) carbinol) (TDCA-DOPO), was used as a contrast. The results showed that the incorporation of TDCAA-DOPO or TDCA-DOPO into UPR can reduce its peak heat release rate (PHRR) and total heat release (THR), as well as improve the limiting oxygen index (LOI) value. As compared to TDCA-DOPO, the reactive TDCAA-DOPO endowed FR-UPR with enhanced thermal stabil...