| 引用本文： |
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覃善丽,童张法,韦华,韦藤幼,戴新.碱性钙基膨润土协同卤锑阻燃HDPE的研究[J].广西科学,2015,22(1):78-82. [点击复制]
- QIN Shan-li,TONG Zhang-fa,WEI Hua,WEI Teng-you,DAI Xin.The Flame Retarding Synergism of Alkaline Ca-Bentonite with Halogen-antimony Flame Retardants on HDPE[J].Guangxi Sciences,2015,22(1):78-82. [点击复制]
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| 摘要: |
| [目的]解决卤锑阻燃高密度聚乙烯(HDPE)复合材料燃烧时发烟量大、熔融滴落严重等问题。[方法]采用自制的碱性钙基膨润土(Ca-MMT)与卤锑阻燃剂复配阻燃HDPE,通过极限氧指数(LOI)、水平燃烧等级、力学性能和热稳定性等测试,研究Ca-MMT和卤锑阻燃剂对HDPE的协同阻燃效应。[结果]HDPE/DBDPE/Sb2O3/Ca-MMT复合材料的LOI由纯HDPE的19.60%提高至32.77%,水平燃烧等级由HB75级提高至HB级,且燃烧时不产生熔滴,具有良好的成炭效应;拉伸强度由13.35 MPa提高至23.33 MPa,力学性能良好;失重率由纯HDPE的96.17%降至86.50%,热稳定性明显提高。碱性钙基膨润土的最佳添加量为4%。[结论]自制的Ca-MMT与卤锑阻燃剂有较好的协同阻燃作用。 |
| 关键词: 碱性钙基膨润土 卤锑阻燃剂 高密度聚乙烯 协同阻燃 |
| DOI：10.13656/j.cnki.gxkx.20150126.011 |
| 投稿时间：2014-09-10修订日期：2014-10-20 |
| 基金项目:广西工业与信息委员会企业技术改造资金项目(桂工信投资[2013]258号)资助。 |
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| The Flame Retarding Synergism of Alkaline Ca-Bentonite with Halogen-antimony Flame Retardants on HDPE |
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QIN Shan-li1, TONG Zhang-fa1, WEI Hua2, WEI Teng-you1, DAI Xin2
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| (1.Guangxi Key Laboratory of Petrochemical Resources Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning Guangxi, 530004, China;2.Guangxi Flame Retardant Additives Engineering Research Center, China Antimony Technology Co. Ltd., Nanning, Guangxi, 530007, China) |
| Abstract: |
| [Objective] The halogen-antimony flame-retardant high-density polyethylene (HDPE) composites produced heavy smoke and serious combustion dripping during burning. Flame retarding synergism was explored to solve these problems.[Methods] The modified alkaline Ca-bentonite (Ca-MMT) combining with halogen-antimony flame retardant was used to prepare HDPE compound flame retardant.The flame-retardant synergism of Ca-MMT and halogen-antimony flame retardant in HDPE composites were studied by means of limiting oxygen index (LOI), horizontal burning grade, the mechanical property and thermal stability tests.[Results] The LOI of flame-retardant HDPE/DBDPE/Sb2O3/Ca-MMT composites increased from 19.60% of pure HDPE to 32.77%, horizontal flammability level was gradually improved from level HB75 to level HB, and the smoke and combustion droplet were not produced with a good char formation effect.Tensile strength increased from 13.24 MPa to 23.33 MPa, which testified that the material had good mechanical properties.Weight loss rate decreased from 96.17% of pure HDPE to 86.50%, which indicated that the thermal stability was improved in comparison with pure HDPE.The optimum adding amount of Ca-bentonite was 4%.[Conclusion] The results showed that the synergistic flame retardant effect of Ca-MMT and halogen-antimony flame retardant was satisfactory. |
| Key words: alkaline Ca-bentonite(Ca-MMT) halogen-antimony flame retardant high density polyethylene (HDPE) synergistic flame retardant effect |
