• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >A Novel Intumescent Flame-Retardant System for Flame-Retarded LLDPE/EVA Composites
【24h】

A Novel Intumescent Flame-Retardant System for Flame-Retarded LLDPE/EVA Composites

机译：用于阻燃LLDPE / EVA复合材料的新型膨胀型阻燃系统

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new intumescent flame retardant (IFR) system consisting of ammonium polyphosphate (APP) and charing-foaming agent (CFA) and a little organic montmorillonite (OMMT) was used in low-density polyethylene (LLDPE)/ethylene-vinyl acetate (EVA) composite. According to limiting oxygen index (LOI) value and UL-94 rating obtained from this work, the reasonable mass ratio of APP to CFA was 3 : 1, and OMMT could obviously enhance the flame retardancy of the composites. Cone calorimeter (CONE) and thermogravimetric analysis (TGA) were applied to evaluate the burning behavior and thermal stability of IFR-LLDPE/EVA (LLDPE/EVA) composites. The results of cone calorimeter showed that heat release rate peak (HRR-peak) and smoke production rate peak (SPR-peak) and time to ignition (TTI) of IFR-LLDPE/EVA composites decreased clearly compared with the pure blend. TGA data showed that IFR could enhance the thermal stability of the composites at high temperature and effectively increase the char residue. The morphological structures of the composites observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) demonstrated that OMMT could well disperse in the composites without exfoliation, and obviously improve the compatibility of components of IFR in LLDPE/EVA blend. The morphological structures of char layer obtained from Cone indicated that OMMT make the char layer structure be more homogenous and more stable.
机译：在低密度聚乙烯（LLDPE）/乙烯-醋酸乙烯酯（EVA）中使用了一种新的膨胀型阻燃剂（IFR）系统，该系统由多磷酸铵（APP）和焦化发泡剂（CFA）和少量有机蒙脱土（OMMT）组成。综合。根据这项工作获得的极限氧指数（LOI）值和UL-94等级，APP与CFA的合理质量比为3：1，OMMT可以明显提高复合材料的阻燃性。锥量热仪（CONE）和热重分析（TGA）用于评估IFR-LLDPE / EVA（LLDPE / EVA）复合材料的燃烧行为和热稳定性。锥形量热仪的结果表明，与纯共混物相比，IFR-LLDPE / EVA复合材料的放热率峰值（HRR峰值）和冒烟率峰值（SPR峰值）和着火时间（TTI）明显降低。 TGA数据表明，IFR可以增强复合材料在高温下的热稳定性，并有效地增加炭渣。通过扫描电子显微镜（SEM）和X射线衍射（XRD）观察到的复合材料的形态结构表明，OMMT可以很好地分散在复合材料中而不会剥离，并且明显改善了IFR在LLDPE / EVA共混物中的相容性。由Cone获得的炭层的形态结构表明，OMMT使炭层结构更均匀，更稳定。

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