• 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 >Temperature dependence of the thermal conductivity and thermal diffusivity of treated oil-palm-fiber-reinforced phenolformaldehyde composites
【24h】

Temperature dependence of the thermal conductivity and thermal diffusivity of treated oil-palm-fiber-reinforced phenolformaldehyde composites

机译：处理后的油棕纤维增强酚醛复合材料的导热率和热扩散率的温度依赖性

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

The effective thermal conductivity (lambda(e)) and effective thermal diffusivity (chi(e)) of oil-palm-fiber-reinforced treated composites were measured simultaneously with the transient plane source technique from 50 to 110degreesC. The fibers of the composites were treated with sodium hydroxide alkali, silanol, and acetic acid. The experimental results for the different treated composites showed that there were variations in lambda(e) and chi(e) over this temperature range. However, the maximum values of lambda(e), and chi(e) were observed at 90degreesC, in the vicinity of the glass-transition temperatures of these composites. An effort was also made to predict the temperature dependence of lambda(e) and chi(e) through the development of an empirical model. The theoretically predicted values of lambda(e) and chi(e) for these composites were in excellent agreement with the experimental results over the entire range of investigated temperatures. Sudden increases in lambda(e) and chi(e) in the glass-transition region of these composites were indicative of the fact that the crosslinking density decreased and was at a minimum at the temperature at which lambda(e) and chi(e) showed their maxima. (C) 2003 Wiley Periodicals, lnc. [References: 30]
机译：用瞬态平面源技术在50至110℃的同时测量了油棕纤维增强处理后的复合材料的有效导热系数（λ）和有效热扩散系数（chi（e））。用氢氧化钠碱，硅烷醇和乙酸处理复合材料的纤维。不同处理的复合材料的实验结果表明，在此温度范围内，λ（e）和chi（e）有所不同。但是，在这些复合物的玻璃化转变温度附近，在90℃观察到λ（e）和chi（e）的最大值。还通过建立经验模型来预测lambda（e）和chi（e）的温度依赖性。这些复合材料的lambda（e）和chi（e）的理论预测值与在整个研究温度范围内的实验结果都非常吻合。在这些复合材料的玻璃化转变区域中，λ（e）和chi（e）突然增加，表明了交联密度降低且在λ（e）和chi（e）的温度下达到最低的事实。显示出他们的最大值。 （C）2003 Wiley Periodicals，lnc。 [参考：30]

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