酚醛改性聚芳基乙炔树脂基复合材料性能研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (12): 82-88.

酚醛改性聚芳基乙炔树脂基复合材料性能研究

苗春卉, 翟全胜, 叶宏军, 赵艳文

航空工业基础技术研究院复材中心,北京101300

收稿日期:2018-09-03 出版日期:2018-12-28 发布日期:2018-12-28
作者简介:苗春卉(1984-),女,硕士,工程师,主要从事热压罐成型复合材料制造方面的研究,shuixinqinghan@sina.com。

STUDY ON PROPERTIES OF PHENOLIC MODIFIED POLYARYLACETYLENE RESIN MATRIX COMPOSITES

MIAO Chun-hui, ZHAI Quan-sheng, YE Hong-jun, ZHAO Yan-wen

AVIC Composite Corporation, Beijing 101300, China

Received:2018-09-03 Online:2018-12-28 Published:2018-12-28

摘要/Abstract

摘要： 聚芳基乙炔(PAA)树脂以其高残碳率、低吸水性等特点,成为烧蚀防热复合材料的理想基体。使用酚醛树脂对PAA树脂进行了改性,分析了改性前后不同树脂体系的固化反应特性和收缩特性;使用不同纤维/树脂体系制造复合材料层合板,测试了层合板弯曲、压缩和层间剪切性能,对比了不同体系层合板截面及断面形貌。结果表明:使用酚醛改性后的PAA树脂制造的层合板力学性能有比较明显的提升,层合板中缺陷明显减少;酚醛树脂改性后,可降低PAA树脂的固化收缩率,减小PAA树脂的表面张力,在固化过程中,酚醛树脂与PAA树脂发生预聚,这些性能与固化特性改变均能减少层合板的缺陷。

关键词: 聚芳基乙炔树脂, 复合材料, 酚醛改性, 裂纹缺陷

Abstract: Polyarylene acetylene (PAA) resin is an ideal substrate for ablative thermal protection composite materials because of its high carbon residue rate and low water absorbency. The PAA resin was modified by phenolic resin. The curing reaction characteristics and shrinkage characteristics of different resin systems were analyzed before and after the modification. Composite laminates were made with different fiber/resin systems. The bending and interlaminar shear properties of laminates were tested, and the cross section and the fracture appearance of different system laminates were compared. The results show that the mechanical properties of the laminates made of PAA resin modified by phenolic resin are obviously improved, and the defects in the laminates are obviously reduced. After the modification of the phenolic resin, the curing shrinkage of the PAA resin is reduced and the surface tension of the PAA resin is reduced. In the curing process, the phenolic resin and the PAA resin are prepolymerized. These properties and the change of curing properties can reduce the defects of the laminate.

Key words: polyarylacetylene resin, composites, phenolic modification, crack defect

中图分类号:

TB332

苗春卉, 翟全胜, 叶宏军, 赵艳文. 酚醛改性聚芳基乙炔树脂基复合材料性能研究[J]. 玻璃钢/复合材料, 2018, 0(12): 82-88.

MIAO Chun-hui, ZHAI Quan-sheng, YE Hong-jun, ZHAO Yan-wen. STUDY ON PROPERTIES OF PHENOLIC MODIFIED POLYARYLACETYLENE RESIN MATRIX COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2018, 0(12): 82-88.

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