• 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 poly(aminobismaleimide)s obtained from solvent-free mixtures
【24h】

Synthesis and characterization of poly(aminobismaleimide)s obtained from solvent-free mixtures

机译：从无溶剂混合物中获得的聚（氨基硅氧酰亚胺）S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

A series of eight poly(aminobismaleimide)s containing aromatic units have been synthesized from a one-step nucleophilic addition reaction between diamine and bismaleimide, without exogeneous solvent, to provide encapsulant withstanding high temperature suitable for power electronics. To have a homogeneous medium at room temperature, the solid aromatic diamines are first mixed with different liquid aliphatic ones, and then mixed with bismaleimide. The syntheses were then carried out at 175 degrees C for 15 min. Thus, according to their composition, these obtained thermosetting resins are characterized by a relaxation temperature between 98 and 190 degrees C and a coefficient of thermal expansion between 20 and 150 ppm/K. All material surfaces are hydrophobic and their moisture uptake is lower than 2-3 wt %. Finally, as expected, the substitution of a part of the aliphatic diamine by an aromatic one improves the thermal stability under air atmosphere of the resulting materials (T-d=280-300 degrees C increased to T-d=315-340 degrees C). Their use as power module encapsulant can therefore be considered. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46105.
机译：一系列含有芳族单元的八个聚（氨基硅氧酰亚酰亚胺）S从二胺和双酰胺之间的一步亲核加成反应中合成，无需相生的溶剂，以提供适用于适用于电力电子的高温的密封剂。为了在室温下具有均相培养基，首先将固体芳族二胺与不同的液态脂族混合，然后与双聚物混合。然后在175℃下进行合成15分钟。因此，根据其组合物，这些得到的热固性树脂的特征在于98至190摄氏度之间的弛豫温度和20至150ppm / k之间的热膨胀系数。所有材料表面都是疏水性的，其水分吸收性低于2-3wt％。最后，如预期的那样，通过芳香族取代脂族二胺的替代改善了所得材料的空气气氛下的热稳定性（T-D = 280-300℃，增加到T-D = 315-340℃）。因此可以考虑作为电源模块密封剂的用途。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46105。

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