• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Synthesis and characterization of two-component acidic ion intercalated layered double hydroxide and its use as a nanoflame-retardant in ethylene vinyl acetate copolymer (EVA)
【24h】

Synthesis and characterization of two-component acidic ion intercalated layered double hydroxide and its use as a nanoflame-retardant in ethylene vinyl acetate copolymer (EVA)

机译：两组分酸性离子夹层双氢氧化物的合成，表征及其在乙烯乙酸乙烯酯共聚物（EVA）中作为纳米阻燃剂的应用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of two-component acidic ion intercalated layered double hydroxides (MgAlZn-X1/X2-LDHs) were synthesized by coprecipitation under microwave crystallization, and were further used as novel nanoflame-retardants for ethylene vinyl acetate (EVA). Various measurement methods have been employed to characterize the structure, morphology, thermal stability and combustible properties of the MgAlZn-X1/X2-LDHs and MgAlZn-X1/X2-LDHs/EVA nanocomposites. The results revealed that MgAlZn-LDHs were intercalated by different two-component acidic ions successfully, and nano-sized particles of MgAlZn-X1/X2-LDHs were achieved. The incorporation of MgAlZn-X1/X2-LDHs into EVA not only can significantly improve the thermal stability of EVA but also improve the thermal oxidative resistance. Compared with pure EVA (LOI = 19, no char yield), the limit oxygen index (LOI) values and char yield of MgAlZn-SnO32?/CO32?-LDHs/EVA (40/60) nanocomposite increased, reaching 29% and 28.40%, respectively. Meanwhile, the max smoke density (MSD) values and underwriters laboratories test (UL-94) of MgAlZn-SnO32?/CO32?-LDHs/EVA nanocomposite decreased by 2.98 and reached a UL-94 V-0 rating, respectively. The improvement of flame retardancy and smoke suppression of MgAlZn-SnO32?/CO32?-LDHs/EVA nanocomposite can be attributed to the intercalation of flame retardant elements into the LDH interlayer and laminate, and the synergistic flame retardant effects between two-component acidic ions, evidenced by the dramatically reduced peak heat release (68.5% reduction), total heat release values (22.2% reduction) and peak smoke production rate (71.2% reduction) obtained from cone calorimeter tests, as compared with that of pure EVA. As such, MgAlZn-SnO32?/CO32?-LDHs could be applied as a promising high-efficiency flame retardant with the function of smoke suppression.
机译：一系列两组分酸性离子嵌入层状双氢氧化物（MgAlZn-X 1 / X 2 -smallHLD ）是在微波结晶下通过共沉淀合成的，并进一步用作乙烯乙酸乙烯酯（EVA）的新型纳米阻燃剂。 MgAlZn-X 1 / X 2 -LDHs和MgAlZn-X 1 / X 2 -LDHs / EVA纳米复合材料。结果表明，MgAlZn-LDHs成功插入了不同的两组分酸性离子，并形成了纳米颗粒的MgAlZn-X 1 / X 实现了2 -LDH。将MgAlZn-X 1 / X 2 -LDHs掺入EVA不仅可以显着提高热稳定性EVA的使用还可以提高其抗热氧化性。与纯EVA（LOI = 19，无炭产率）相比，MgAlZn-SnO 3 的极限氧指数（LOI）值和炭产率2？ / CO 3 2？ -LDHs / EVA（40 / 60）纳米复合材料增加，分别达到29％和28.40％。同时，MgAlZn-SnO 3 2？的最大烟雾密度（MSD）值和保险商实验室测试（UL-94）。 / CO 3 2？ -LDHs / EVA纳米复合材料下降2.98并达到UL-分别为94 V-0额定值。 MgAlZn-SnO 3 2？ / CO 3 2？ -LDHs / EVA纳米复合材料可归因于阻燃元素插入LDH中间层和层压板中，并且两组分酸性离子之间的协同阻燃作用，通过锥形量热仪测试获得的峰值放热（减少68.5％），总放热值（减少22.2％）和峰值烟雾产生率（减少71.2％）得到证明，与纯EVA相比。因此，MgAlZn-SnO 3 2？ / CO 3 2？ -LDHs可以用作具有抑制烟尘功能的高效阻燃剂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号