Abstract

The fire retardancy of a thiol-ene (trimethylolpropane tris(3-mercaptopropionate)-pentaerythritol allyl ether, PTE) polymer was enhanced by the incorporation of fire retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The cone calorimetry results showed that, compared with pure PTE, the peak heat release rate (PHRR) and total heat release (THR) of the PTE composite at 5 wt% DOPO loading were reduced by 40.9% and 21.8%, respectively. The Kissinger and Flynn-Wall-Ozawa methods were both employed to analyze the TGA data of the PTE and fire-retardant PTE (FRTE) composites. It was clearly observed that the activation energies of pure PTE and the FRTE composites calculated using the two methods followed the same trend; the activation energies of the fire retardant PTE were lower than those of pure PTE, which we attribute to the fire retardant DOPO improving the thermal stability and fire retardancy of PTE.

摘要

通过加入阻燃剂 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (多宝）。锥形量热法结果表明，与纯PTE相比，PTE复合材料在5 wt% DOPO负载下的峰值放热率（PHRR）和总放热（THR）分别降低了40.9%和21.8%。Kissinger 和 Flynn-Wall-Ozawa 方法均用于分析 PTE 和阻燃 PTE (FRTE) 复合材料的 TGA 数据。可以清楚地观察到，两种方法计算的纯PTE和FRTE复合材料的活化能趋势相同；阻燃PTE的活化能低于纯PTE，