首页> 外文期刊>Journal of Applied Polymer Science >Structure-property correlation for thin films of semi-interpenetrating polyimide networks. I. Miscibility, curing, and morphology studies
【24h】

Structure-property correlation for thin films of semi-interpenetrating polyimide networks. I. Miscibility, curing, and morphology studies

机译:半互穿聚酰亚胺网络薄膜的结构性质相关性。 I.混溶性,固化和形态研究

获取原文
获取原文并翻译 | 示例
           

摘要

Three different semi-interpenetrating polymer network (semi-IPN) polyimide systems were prepared through blending in solution by using 2 different polyimides, BPDA-PDA and PMDA-ODA (E), and 2 different oligomers, bismaleimide (MDAB) and phenylthynyl-terminated BPDA-PDA (BPDA-PDA-PEPA) oligomers. The oligomers are used as crosslinkers to modify the morphology of polyimides. The results show that both MDAB and PEPA are miscible with BPDA-PDA, but MDAB is immiscible with PMDA-ODA (E). Fourier transform infrared spectrum, dynamic mechanical thermal analysis data, and calculated crosslinking density indicate that there are crosslinking networks in these semi-IPN polyimide systems. In addition, the density and wide-angle X-ray diffraction results confirm that the molecular ordering and packing order are reduced by the addition of oligomers for these semi IPN polyimide systems. (C) 1998 John Wiley & Sons, Inc. [References: 53]
机译:通过使用两种不同的聚酰亚胺BPDA-PDA和PMDA-ODA(E)以及两种不同的低聚物双马来酰亚胺(MDAB)和苯乙炔基封端在溶液中共混来制备三种不同的半互穿聚合物网络(semi-IPN)聚酰亚胺体系BPDA-PDA(BPDA-PDA-PEPA)低聚物。该低聚物用作交联剂以改变聚酰亚胺的形态。结果表明,MDAB和PEPA均可与BPDA-PDA混溶,而MDAB与PMDA-ODA(E)不混溶。傅立叶变换红外光谱,动态机械热分析数据和计算得出的交联密度表明,在这些半IPN聚酰亚胺系统中存在交联网络。此外,密度和广角X射线衍射结果证实,通过为这些半IPN聚酰亚胺系统添加低聚物,可以降低分子有序和堆积顺序。 (C)1998 John Wiley&Sons,Inc. [参考:53]

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