• 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 >Synthesis and characterization of novel organosilicon-modified polyurethane
【24h】

Synthesis and characterization of novel organosilicon-modified polyurethane

机译：新型有机硅改性聚氨酯的合成与表征

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

Organosilicon-modified polyurethane have been synthesized using the prepolymer method and characterized by Fourier infrared (FTIR) spectroscopy, wide angle X-ray diffraction (WAXD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential thermal analysis (DTA), solvent resistance analysis, and stress-strain tests. The FTIR spectra show that the polyurethane is fully reacted and polydimethylsiloxane (PDMS) is chemically incorporated into the copolymer. SEM reveals a multiphase structure with surface cracking and thermal analysis indicates that the heat resistance properties are better when the PDMS concentration is low. According to the solvent resistance, water and acetone uptake decreases when the PDMS content is less than 4 wt % while the ethanol uptake changes indistinctively. The mechanical properties of the films are also discussed. A tensile strength up to 6 wt % has the largest effect while the elongation at break decreases.
机译：已使用预聚物方法合成了有机硅改性的聚氨酯，并通过傅里叶红外（FTIR）光谱，广角X射线衍射（WAXD），扫描电子显微镜（SEM），热重分析（TGA），差热分析（​​DTA）进行了表征，耐溶剂性分析和应力应变测试。 FTIR光谱表明聚氨酯已充分反应，聚二甲基硅氧烷（PDMS）已化学掺入共聚物中。 SEM揭示了具有表面开裂的多相结构，热分析表明，当PDMS浓度低时，耐热性能更好。根据耐溶剂性，当PDMS含量小于4wt％时，水和丙酮的吸收降低，而乙醇的吸收变化不明显。还讨论了膜的机械性能。高达6重量％的拉伸强度具有最大的作用，而断裂伸长率降低。

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