Effect of hydroxides and hydroxycarbonate structure on fire retardant effectiveness and mechanical properties in ethylene-vinyl acetate copolymer
Effect of hydroxides and hydroxycarbonate structure on fire retardant effectiveness and mechanical properties in ethylene-vinyl acetate copolymer
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DOI：
10.1016/s0141-3910(01)00167-7
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发表时间：
2001-01-01
影响因子：
5.9
通讯作者：
Zammarano, M
中科院分区：
文献类型：
--
作者：
Camino, G;Maffezzoli, A;Zammarano, M
评价了氢氧化铝、氢氧化镁等无机氢氧化物在乙烯-乙酸乙烯酯共聚物中的阻燃效果，并与薄水铝石、水滑石等无机填料进行了比较。用差示扫描量热法(DSC)、热重法(TG)和X射线衍射仪(XRD)分析了EVA聚合物填充前后的热分解过程。用失重量热仪观察到的最显著的阻燃效果表明，填充50wt%水滑石的EVA聚合物具有最慢的放热速率和最低的放气温度。X射线衍射数据结合热分析结果表明，水滑石的层状结构可能在降解机理中起作用。水滑石填充EVA的耐火性能的提高也源于其膨胀性。(C)2001爱思唯尔科学有限公司。保留所有权利。
The flame retardant effect of inorganic hydroxides, like aluminum hydroxide and magnesium hydroxide in ethylene vinyl acetate copolymer, was evaluated and compared with that of other inorganic fillers such as boehmite and hydrotalcite. The thermal decomposition of the fillers and the mixtures with EVA polymer were analysed by differential scanning calorimetry (DSC), Thermogravimetry (TG) and X-ray diffraction (XRD). The most significant flame retardant effects, observed using a mass loss calorimeter, indicated that the EVA polymer filled with 50 wt.% of hydrotalcite has the slowest heat release rate and the lowest evolved gas temperature. XRD data, combined with thermal analysis results, indicated that the layered structure of hydrotalcite may play a role in the degradation mechanism. The improved fire resistance of EVA filled with hydrotalcite also results from its intumescent behaviour. (C) 2001 Elsevier Science Ltd. All rights reserved.