紫外光交联无卤阻燃聚乙烯醋酸乙烯酯绝缘材料的研制 |
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引用本文: | 张涛,李忠华,李迎.紫外光交联无卤阻燃聚乙烯醋酸乙烯酯绝缘材料的研制[J].高分子材料科学与工程,2016(9):137-141. |
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作者姓名: | 张涛 李忠华 李迎 |
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作者单位: | 1. 哈尔滨理工大学电气与工程学院,黑龙江哈尔滨150040;青岛汉缆股份有限公司,山东青岛266100;2. 哈尔滨理工大学电气与工程学院,黑龙江哈尔滨,150040 |
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基金项目: | 国家高技术研究发展计划(863计划)(2013AA030702) |
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摘 要: | 以聚乙烯醋酸乙烯酯(EVA)为树脂基体,氢氧化镁(MH)为无卤阻燃剂,并分别加入表面改性剂硬脂酸(SA)和十一烯酸(UA),通过紫外光辐照进行交联,通过凝胶含量测试、红外光谱、扫描电镜等测试研究了交联及2种不同的表面改性剂对EVA/MH性能的影响。研究结果表明,在含有UA的EVA/MH体系中交联后材料的拉伸强度达到10 MPa以上,断裂伸长率达到150%以上,同时氧指数达到43以上。通过微观研究表明这主要是由于含乙烯基的UA在交联过程中参与了交联反应形成了交联点,同时提高了氢氧化镁与树脂基体EVA的界面作用。
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关 键 词: | 紫外光交联 无卤阻燃 氢氧化镁 十一烯酸 |
Photocrosslinking of Halogen-Free Flame Retardant Ethylene Vinyl Acetate Copolymer/Magnesium Hydroxide Blends |
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Abstract: | The influence of photocrosslinking and surface modification agent on the properties of halogen-free flame retardant polyolefin blends,which used polyethylene vinyl acetate (EVA) as matrix resin,magnesium hydroxide (MH) as halogen-free flame retardant,and stearic acid (SA) or undecylenic acid (UA) as surface modification agent,was investigated.The obtained results from gel content,FT-IR,LOI,and mechanical property tests show that the tensile strength is higher than 10 MPa,the elongation at break is higher than 150 %,and the LOI value reaches 43.The TEM,SEM tests demonstrate that undecylenic acid (UA) can be photo-grafted to the polymer crosslink network and build covalent connection between MH and the EVA matrix during the photocrosslinking process,which result in better mechanical property and flame retardant property. |
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Keywords: | photocrosslink halogen-free flame retardant magnesium hydroxide undecylenic acid |
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