化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (4) : 161-165. DOI: 10.19817/j.cnki.issn1006-3536.2021.04.035

科学研究

富勒烯与蒙脱土协效作用对聚丙烯热性能及阻燃性能的影响

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作者信息 +

Influence of C₆₀/MMT synergist on PP thermal property and flame retardancy

Chen Qiunan^1,2, Fang Zhengping², Guo Zhenghong²

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文章历史 +

Received
2019-12-23
Issue Date	Revised Date
2021-05-07	2019-12-23

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摘要

将富勒烯(C₆₀)与蒙脱土(MMT)复配,作为膨胀型阻燃剂(IFR)的协效剂用于聚丙烯(PP)的热稳定和阻燃改性中,通过对比不同比例的C₆₀和MMT在PP基体中的热性能和阻燃性能的差异,探索C₆₀与MMT协同效应对PP热稳定性和阻燃性能影响及其作用机理。结果表明:C₆₀的自由基捕捉能力和MMT的炭层效应之间存在较好的协效作用,1%的C₆₀/MMT就可使PP/IFR的氧化诱导时间(OIT)和极限氧指数(LOI)分别提升了14.3min和约2.9%,并且可有效地降低锥形量热测试中的最大热释放速率,并延长最大热释放速率对应的时间,且残炭也变得更为致密连续。

Abstract

The compound of fullerene (C₆₀) and montmorillonite (MMT) was used as a synergist for the flame retardancy of polypropylene(PP).By comparing the difference of thermal and flame retardant properties of C₆₀ and MMT in PP matrix,the synergistic effects of C₆₀ and MMT on PP thermal properties and flame retardancy were investigated.It was found that there was an optimal synergy ratio between C₆₀ and MMT,and 1wt% C₆₀/MMT can increase the oxidation induction time (OIT) and LOI of the PP/IFR system by 14.3min and 2.9%,respectively.In the cone calorimetry test,the addition of C₆₀/MMT can effectively reduce the maximum heat release rate,and prolonged the time corresponding to the maximum heat release rate of the PP/IFR system,and the carbon residue was more dense and continuous.The carbon layer effect of MMT was applied while exerting the free radical trapping effect of C₆₀,and a complete dense crosslinked carbon layer structure was formed in situ in the polymer.

关键词

富勒烯 / 蒙脱土 / 热性能 / 阻燃性能

Key words

fullerene / montmorillonite / flammability / thermal stability

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富勒烯与蒙脱土协效作用对聚丙烯热性能及阻燃性能的影响[J]. 化工新型材料, 2021, 49(4): 161-165 DOI:10.19817/j.cnki.issn1006-3536.2021.04.035

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