• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymers and the Environment >Effects of Modified Used Cooking Oil on Structure and Properties of Closed-Cell Polyurethane foams
【24h】

Effects of Modified Used Cooking Oil on Structure and Properties of Closed-Cell Polyurethane foams

机译：改性用食用油对闭孔聚氨酯泡沫结构及性能的影响

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 aim of this work is to evaluate the influence of bio-polyol synthesized from used cooking oil on selected properties of rigid polyurethane foams. Application of bio-polyol allows utilization of used cooking oil in the preparation of polyurethane foams according to circular economy. In our work, bio-polyurethane foams were obtained by replacing 20, 60 and 100% of petrochemical polyol with bio-polyol from waste oil. It was observed that the introduction of the bio-polyol caused an increase in the reactivity of the polyurethane system during the foaming process, which was also confirmed by dielectric polarization changes. A complete replacement of petrochemical polyol with the bio-polyol caused cell opening in the foams. A replacement of 20 wt% of petrochemical polyol with the bio-polyol allowed preparation of polyurethane foams with improved thermal insulating properties. The introduction of 20% of the bio-polyol resulted in an increase of the compressive strength in a parallel direction compared to the reference material. The dimensional stability of bio-foams was very high since none of the dimensions differed by more than 0.5% upon treatment with an elevated temperature (70 degrees C).
机译：这项工作的目的是评估生物多元醇合成的生物多元醇在刚性聚氨酯泡沫的选定性质上合成的影响。生物多元醇的应用允许利用在循环经济的制备聚氨酯泡沫中使用过的食用油。在我们的工作中，通过用废油的生物多元醇替换20,60和100％的石化多元醇来获得生物聚氨酯泡沫。观察到生物多元醇的引入引起了在发泡过程中的聚氨酯系统的反应性增加，这也通过介电偏振变化来证实。用生物多元醇完全替代石化多元醇引起泡沫中的细胞开口。替代20wt％的石化多元醇，具有生物多元醇的生物多元醇允许制备具有改善的绝热性能的聚氨酯泡沫。与参考材料相比，引入20％的生物多元醇导致平行方向上的压缩强度的增加。生物泡沫的尺寸稳定性非常高，因为在用升高的温度（70℃）处理时尺寸都不超过0.5％。

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