Wu Fangyi, Bao Xiaohui, Wang Jiangbo
School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, China.
Polymers (Basel). 2022 Feb 20;14(4):820. doi: 10.3390/polym14040820.
In this article, a novel phosphorus and silicon-containing flame retardant (DOPO-V-PA) was synthesized via condensation reaction and then added into thiol-ene (TE) to prepare a flame-retardant composite. The results of cone calorimeter measurement demonstrated that, compared with pure TE, 22.7% and 53.2% reduction of TE/DOPO-V-PA (thiol-ene/9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-vinyltrimethoxysilane-phenyltrimethoxysilane-(3-aminopropyl)trimethoxysilane copolymer) was found for the peak heat release rate (PHRR) and total heat release (THR), respectively. The thermal degradation of TE composites was investigated by the TGA measurement under non-isothermal conditions, and kinetic parameters were both calculated by the Kissinger and Flynn-Wall-Ozawa methods. It was indicated that the activation energies of TE at conversions exceeding 50% were enhanced by the incorporation of DOPO-V-PA for the whole conversion range.
在本文中，通过缩合反应合成了一种新型含磷硅阻燃剂（DOPO-V-PA），然后将其添加到硫醇-烯（TE）中制备阻燃复合材料。锥形量热仪测量结果表明，与纯TE相比，硫醇-烯/9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物-乙烯基三甲氧基硅烷-苯基三甲氧基硅烷-（3-氨丙基）三甲氧基硅烷共聚物（TE/DOPO-V-PA）的峰值热释放速率（PHRR）和总热释放（THR）分别降低了22.7%和53.2%。通过非等温条件下的热重分析（TGA）测量研究了TE复合材料的热降解，并分别用基辛格法和弗林-沃尔-小泽法计算了动力学参数。结果表明，在整个转化率范围内，加入DOPO-V-PA后，TE在转化率超过50%时的活化能有所提高。
