A novel and eicient P/N/B-containing mono-component IFR for improving the lame retardancy of polyolein elastomer
A novel and eicient P/N/B-containing mono-component IFR for improving the lame retardancy of polyolein elastomer
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一种新型高效的含 P/N/B 单组分 IFR，用于改善聚油酸酯弹性体的迟缓性
DOI：
10.1007/s10973-021-11120-7
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发表时间：
--
影响因子：
4.4
通讯作者：
Xu Miaojun
中科院分区：
文献类型：
--
作者：
Tao Lili;Xu Yue;Liu Lubin;Li Bin;Xu Miaojun
合成了一种新型单组分含磷、氮、硼的膨胀型阻燃剂聚甲基膦酸-硼酸哌嗪新戊二醇酯MBPNE。通过FTIR、~（13）C和~（31）P固体核磁共振谱分析了MBPNE的化学结构。热重分析结果表明，MBPNE具有良好的成炭性能，在800 °C时残炭率为27.5%（质量分数）。此外，MBPNE在炭化过程中还发生了熔融膨胀过程。采用MBPNE制备了阻燃聚烯烃弹性体（POE）复合材料。当MBPNE的质量分数为22%时，1.6 mm POE/MBPNE试样达到UL-94 V-0等级，其LOI值为25.5%。离开火焰后，床单很快就熄灭了，没有出现滴水。此外，MBPNE的掺入有效地提高了锥形量热仪测试后的残余焦炭质量，并抑制了热释放。在燃烧过程中，POE复合材料表面形成了致密、膨胀、部分石墨化、粘结的炭层，并在凝聚相中起到隔离作用。同时，MBPNE的降解产物淬灭了气相中的活性自由基，有效地阻断了POE复合材料的燃烧链反应。因此，POE复合材料具有优异的阻燃性能。
A novel mono-component P/N/B-containing intumescent flame retardant poly(methylphosphonic-boric acid piperazine neopentylgcol ester) named MBPNE was synthesized. The chemical structure of MBPNE was analyzed by FTIR,13C and31P solid-state NMR tests. The results of thermal gravimetric analysis indicated that MBPNE possessed excellent charring capability, and its residual char was 27.5 mass% at 800 °C. Besides, MBPNE occurred melting and expansion process during charring evolution process. MBPNE was used to prepare flame retardant polyolefin elastomer (POE) composites. The 1.6 mm POE/MBPNE specimens achieved UL-94 V-0 rating and their LOI value was 25.5% when 22 mass% MBPNE was incorporated. The sheet was extinguished quickly after departing the flame, and no dripping appeared. Furthermore, the incorporation of MBPNE effectively enhanced the residual char mass after cone calorimeter tests, and the heat release was suppressed. The compact, expanded, partially graphitized and coherent char layer was generated on POE composites surface during burning process and exerted isolation effect in condensed phase. Meanwhile, the degradation products of MBPNE quenched active free radicals in gaseous phase, which effectually interrupted the combustion chain reaction of POE composites. Consequently, the POE composites were endowed excellent flame retardant performance.