新材料与新技术

勃姆石/二乙基次膦酸铝在玻纤增强尼龙6T-66中的协效阻燃研究

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  • 1.浙江新和成特种材料有限公司,绍兴 312300;
    2.浙江大学化学工程与生物工程学院联合化学反应工程研究所,杭州 310027
周贵阳(1975-),男,本科,工程师,主要从事特种工程塑料的研究开发,E-mail:zgy@cnhu.com。

收稿日期: 2020-07-11

  修回日期: 2020-09-07

  网络出版日期: 2020-10-20

基金资助

浙江省重点研发计划(2019C01103)

Synergistic effect of BM/AlPi on the flame retardant property of GFR polyamide 6T-66

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  • 1. Zhejiang NHU Special Materials Co. ,Ltd. ,Shaoxing 312300;
    2. College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027

Received date: 2020-07-11

  Revised date: 2020-09-07

  Online published: 2020-10-20

摘要

详细探究二乙基次膦酸铝(AlPi)、勃姆石(BM)复配使用对玻纤增强尼龙PA6T-66的阻燃协效作用。AlPi加入质量为14%时,复合材料试样通过UL 94 0.8mm/V级阻燃测试;极限氧指数(LOI)由纯玻纤增强树脂的24.5%提高至45.3%。AlPi的添加质量继续提高至16%或者复配1.5% BM时,复合材料试样通过UL 94 0.8mm V-0级阻燃测试,且14% AlPi/1.5% BM的阻燃性能甚至优于16% AlPi,显示了AlPi与BM的明显阻燃协同作用。热重分析测试表明,加入BM后,热氧降解过程中结焦量和最终残留率都明显增加,这可能是导致BM和AlPi间阻燃协效作用的主要原因。复合材料燃烧行为的锥形量热仪表征结果表明,AlPi和BM复配使用能够显著地降低热释放速率(HRR)和总热释放量(THR)等。

本文引用格式

周贵阳, 贾艳宇, 邓杭军, 尹红 . 勃姆石/二乙基次膦酸铝在玻纤增强尼龙6T-66中的协效阻燃研究[J]. 化工新型材料, 2020 , 48(9) : 123 -127 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.026

Abstract

The effect of boehmite (BM) as a synergistic agent with aluminium diethyphosphinate (AlPi) on the flame retardancy and thermal degradation of glass fiber-reinforced(GFR) polyamide 6T-66 were fully investigated.The results demonstrated that standard specimens passed vertical burning UL-94 0.8mm V-1 flammability rating,and the limiting oxygen index (LOI) was increased by 20.8% to 45.3% when the loading amount of AlPi was 14wt%.The specimens passed V-0 when the loading amount of AlPi was further increased to 16wt% or when 1wt% boehmite was added,which indicated synergistic action between AlPi and BM.Thermogravimetric analysis (TGA) revealed that adding BM facilitated the char formation during thermo-oxidative degradation,which may attribute to the above synergistic effect.Cone calorimeter test was applied to evaluate the fire behaviors,which demonstrated that AlPi combined with BM efficiently reduced the fire behavior parameters such as heat release rate (HRR) and total heat release (THR).

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