• 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 >Composites of rigid polyurethane foam and cellulose fiber residue
【24h】

Composites of rigid polyurethane foam and cellulose fiber residue

机译：硬质聚氨酯泡沫和纤维素纤维残渣的复合材料

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

Rigid polyurethane composite foams were prepared with cellulose fibers as a filler. The cellulose fibers were an industrial residue of blanched cellulose pulp production. The influence of the cellulose fiber concentration on the structural, thermal, mechanical, and morphological properties of the foams was investigated. We also studied the influence of the cellulose fibers on the foam's resistance to fungal attack by placing a suspension of known fungus in contact with the surface of the foam and following the morphological evolution as a function of time (for 60 days). The increase in the cellulose filler concentration in the foams, up to 16% w/w with respect to the polyol, changed their properties as follows: (1) the cell size decreased, (2) the thermooxidative stability and mechanical properties remained approximately constant, (3) the thermal conductivity decreased slightly, and (4) fungal growth was observed. Therefore, a cellulosic fibrous industrial residue was rationally valorized as a filler in classical rigid polyurethane foams; this yielded materials with mechanical resistance and a susceptibility to fungi in a wet environment.
机译：用纤维素纤维作为填料制备硬质聚氨酯复合泡沫。纤维素纤维是变白的纤维素纸浆生产的工业残余物。研究了纤维素纤维浓度对泡沫的结构，热，机械和形态性能的影响。我们还通过将已知真菌的悬浮液与泡沫表面接触，并随时间变化随时间变化（持续60天），研究了纤维素纤维对泡沫抵抗真菌侵袭的影响。相对于多元醇，泡沫中纤维素填料浓度的增加高达16％w / w，改变了它们的性能，如下所示：（1）泡孔尺寸减小，（2）热氧化稳定性和机械性能保持近似恒定，（3）导热系数略有下降，并且（4）观察到真菌生长。因此，在传统的硬质聚氨酯泡沫中，纤维素纤维工业残留物可以合理地用作填料。这产生了具有机械抗性并且在潮湿环境中对真菌敏感的材料。

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