航空学报 > 2005, Vol. 26 Issue (5): 610-616

双酚A型环氧树脂/DDS固化剂体系的流变特性及其黏度模型研究

石凤1, 段跃新1, 曾秀妮1, 梁志勇1,2, 张佐光1   

  1. 1. 北京航空航天大学 材料科学与工程学院104教研室, 北京 100083;2. Florida Advanced Center for Composite Technologies, FAMU-FSU College of Engineering, Tallahassee, FL 32310-6046
  • 收稿日期:2005-01-20 修回日期:2005-06-08 出版日期:2005-10-25 发布日期:2005-10-25

Rheological Behaviors and Viscosity Model of Bisphnol-A Epoxy/DDS Resin System

SHI Feng1, DUAN Yue-xin1, ZENG Xiu-ni1, LIANG Zhi-yong1,2, ZHANG Zuo-guang1   

  1. 1. Faculty 104, School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;2. Florida Advanced Center for Composite Technologies, AMU-FSU College of Engineering, Tallahassee, FL 32310-6046, USA
  • Received:2005-01-20 Revised:2005-06-08 Online:2005-10-25 Published:2005-10-25

摘要:

通过DSC和黏度测量,研究了反应型固化剂DDS(二氨基二苯基砜)用量对双酚A环氧树脂体系黏度变化的影响规律。研究结果表明,流变特性与固化特性随固化剂用量的变化规律相似。DDS的用量在一定范围内对环氧树脂体系流变特性影响不大。建立了环氧树脂工程黏度模型,该模型能够有效的预测体系黏度变化的工艺窗口并进行黏度预报,为复合材料成型工艺的顺利实施以及工艺参数的科学制定提供基础。

关键词: 双酚A型环氧树脂, 反应固化剂, 黏度模型, 工艺窗口

Abstract:

The effects of DDS curing agent ratio on the curing kinetic and viscosity of a DDS/bisphnol-A epoxy resin system are experimentally studied by DSC analysis and viscosity measurements. The results show that the DDS ratio has little effect on rheological behavior of resin system in a certain range. An engineering viscosity model is succefully developed to predict resin rheological behaviors of the resin system based on the viscosity measurement results and mechanisms of the curing reaction. The established model can be used to predict the processing windows of different viscosity requirements, which is critical for the simulation and optimization of composite manufacturing processes.

Key words: bisphnol-A epoxy resin, reaction curing agent, viscosity model, processing windows

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