• 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 >Investigation of the relationship between morphology and tribological properties of an epoxy resin based on tetraglycidyl 4,4′- diaminodiphenylmethane modified with polyetherimide oligomers
【24h】

Investigation of the relationship between morphology and tribological properties of an epoxy resin based on tetraglycidyl 4,4′- diaminodiphenylmethane modified with polyetherimide oligomers

机译：聚醚酰亚胺低聚物改性的四缩水甘油基4,4'-二氨基二苯甲烷基环氧树脂的形态与摩擦学性能关系的研究

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

In this paper, polyetherimides (PEI) with two different calculated number-average molecular weights (M_n) of 5000 and 10,000 g/mol were synthesized and used to modify tetraglycidyl 4,4′-diaminodiphenylmethane. Three different morphologies (separated phase, bi-continuous phase, and phase inversion structure) were obtained by controlling molecular weights and content of PEI. Thermal and mechanical characterizations showed that addition of PEI resulted in an increase in thermal stability and tensile strength. Tensile strength of samples with bi-continuous phase was higher than those with separated phase or phase inversion structure. Influence of morphologies on tribology properties were studied by a ring-on-block wear tester. Higher wear resistance was achieved from samples with bi-continuous phase. It was found that wear life of samples with bi-continuous phase was almost 100% higher than that of samples with separated phase. This is clearly related to the change in thermal and mechanical properties caused by the change of morphologies. Scanning electron microscope observations of worn surfaces and wear debris of the tested samples showed that tribological behaviors and wear mechanisms were heavily dependent on morphologies.
机译：本文合成了聚醚酰亚胺（PEI），其具有两个不同的计算的数均分子量（M_n）分别为5000和10,000 g / mol，并用于修饰四缩水甘油基4,4'-二氨基二苯甲烷。通过控制分子量和PEI的含量，可以获得三种不同的形态（分离相，双连续相和相转化结​​构）。热和机械特征表明，PEI的加入导致热稳定性和抗张强度的增加。双连续相样品的拉伸强度高于分离相或相转化结构的样品。形态对摩擦学性能的影响通过环上磨损试验仪进行了研究。具有双连续相的样品具有更高的耐磨性。发现双连续相样品的磨损寿命比分离相样品高100％。这显然与由形态变化引起的热和机械性能的变化有关。扫描电子显微镜对测试样品的磨损表面和磨损碎片的观察表明，摩擦学行为和磨损机理在很大程度上取决于形态。

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