液晶环氧/BMI共聚物微观结构的研究

陈立新; 王汝敏; 齐暑华; 徐亚洪; 廖建伟

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航空材料学报 ›› 2002, Vol. 22 ›› Issue (3) : 38-40,45.

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论文

液晶环氧/BMI共聚物微观结构的研究

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Study on the microstructure of BMI/liquid crystalline epoxy copolymer

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摘要

对BMI与二元胺扩链后与液晶环氧(PHBHQ)形成的共聚物的微观结构进行了分析。扫描电镜(SEM)对共聚体系冲击断面的分析表明,当BMI:DDBA=1:1,1:1.5时,共聚体系为“皮-芯”结构;当BMI:DDBA=1:2时,共聚体系为“互穿网络”结构。广角X射线衍射(WAXD)和动态力学(DMTA)的分析表明,BMI/BDAP/PHBHQ体系为均相体系,在固化网络中,PHBHQ形成取向有序的介晶域,对裂纹起到引发、分支、终止作用。

Abstract

The copolymer microstructure of BMI with liquid crystalline epoxy (PHBHQ) after extending chain was observed Through observation by Scanning Electron Microscope (SEM) showed when BMI:BDAP was equal from 1:1 or 1:1 5 to 1:2, the impact fracture surface was "skin-core" and "impenetrate network"structure respectively The system of BMI/BDAP/PHBHQ was a uniform system analyzed by Dynamic Thermomechanical Analysis (DMTA) During curing the PHBHQ formed oriental ordered mesogenic domain analyzed by Wide-angle X-Ray Diffraction (WAXD) could initiate, branch, terminate the crack dispersed in the copolymer.

导出引用

陈立新, 王汝敏, 齐暑华, 徐亚洪, 廖建伟. 液晶环氧/BMI共聚物微观结构的研究[J]. 航空材料学报, 2002, 22(3): 38-40,45

CHEN Li-xin, WANG Ru-min, QI Shu-hua, XU Ya-hong, LIAO Jian-wei. Study on the microstructure of BMI/liquid crystalline epoxy copolymer[J]. Journal of Aeronautical Materials, 2002, 22(3): 38-40,45

参考文献

王汝敏.改性双马来酰亚胺树脂基体研究[D].西安:西北工业大学,1999.
白永平,王清民,王宝湖,等.BMI树脂基复合材料研究进展[J].纤维复合材料,1999,(1):48-51.
米军,张欣苑,李祝,等.液晶双马来酰亚胺/环氧树脂共聚物的制备[J].热固性树脂,1997,(3):5-8.
陈立新,王汝敏,蓝立文,等.含芳香酯基液晶基元环氧树脂的合成与表征[J]. 西北工业大学学报,2000,增刊:144-149.
陈立新,王汝敏,蓝立文,等.液晶环氧/双马来酰亚胺共聚物的研究[J].材料科学与工程,2001,(1):109-111.