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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of novel triazine charring agent and its effect in intumescent flame-retardant polypropylene
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Synthesis of novel triazine charring agent and its effect in intumescent flame-retardant polypropylene

机译：新型三嗪炭化剂的合成及其在膨胀型阻燃聚丙烯中的作用

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摘要

A novel charring agent (CNCA-DA) containing triazine and benzene ring, using cyanuric chloride, aniline, and ethylenediamine as raw materials, was synthesized and characterized. The effects of CNCA-DA on flame retardancy, thermal degradation, and flammability properties of polypropylene (PP) were investigated by limited oxygen index (LOI), vertical burning test (UL-94), thermogravimetric analysis (TGA), and cone calorimeter test (CCT). The TGA results showed that CNCA-DA had a good char forming ability, and a high initial temperature of thermal degradation; the char residue of CNCA-DA reached 18.5% at 800°C; Ammonium polyphosphate (APP) could improve the char residue of APP/CNCA-DA system, the char residue reached 31.6% at 800°C. The results from LOI and UL-94 showed that the intumescent flame retardant (IFR) containing CNCA-DA and APP was very effective in flame retardancy of PP. When the mass ratio of APP and CNCA-DA was 2: 1, and the IFR loading was 30%, the IFR showed the best effect; the LOI value reached 35.6%. It was also found that when the IFR loading was only 20%, the flame retardancy of PP/IFR can still pass V-0 rating in UL-94 tests, and its LOI value reached 27.1%. The CCT results demonstrated that IFR could clearly change the decomposition behavior of PP and form a char layer on the surface of the composites, consequently resulting in efficient reduction of the flammability parameters, such as heat release rate (HRR), total heat release (THR), smoke production rate (SPR), total smoke production (TSP), and mass loss (ML).
机译：以氰尿酰氯，苯胺和乙二胺为原料，合成并表征了一种新型的含三嗪和苯环的炭化剂（CNCA-DA）。通过有限氧指数（LOI），垂直燃烧试验（UL-94），热重分析（TGA）和锥形量热仪试验研究了CNCA-DA对聚丙烯（PP）的阻燃性，热降解和可燃性的影响（CCT）。 TGA结果表明，CNCA-DA具有良好的成炭能力，并且具有较高的初始热降解温度。 800℃时，CNCA-DA的残炭量达到18.5％。聚磷酸铵（APP）可以改善APP / CNCA-DA系统的炭渣，在800℃时炭渣达到31.6％。 LOI和UL-94的结果表明，含有CNCA-DA和APP的膨胀型阻燃剂（IFR）对PP的阻燃性非常有效。当APP与CNCA-DA的质量比为2：1，IFR负载为30％时，IFR表现出最好的效果。 LOI值达到35.6％。还发现，当IFR负载仅为20％时，PP / IFR的阻燃性仍可以通过UL-94测试中的V-0级，其LOI值达到27.1％。 CCT结果表明，IFR可以明显改变PP的分解行为，并在复合材料表面形成炭层，从而有效降低可燃性参数，例如放热率（HRR），总放热（THR） ），烟雾产生率（SPR），烟雾产生总量（TSP）和质量损失（ML）。

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