| PSF/环氧共混基体体系增韧机理研究 |
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| 引用本文： | 孙志杰,殷立新,梁志勇,张佐光. PSF/环氧共混基体体系增韧机理研究[J]. 复合材料学报, 2000, 17(1): 42-45 |
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| 作者姓名： | 孙志杰 殷立新 梁志勇 张佐光 |
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| 作者单位： | 北京航空航天大学,材料科学与工程系,北京,100083 |
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| 摘 要： | 通过对PSF/环氧共混体系剥离强度、DMA 及SEM 断口图象的分析研究, 揭示了共混体系相结构演变与脆韧转变的对应关系和增韧机理。研究表明, 当共混体系形成较均匀完整的PSF 连续网膜包覆环氧球粒分散相结构,并且网膜厚度小于0. 04 Lm 时, 体系呈现高韧性, 此时体系由断面上高韧性的PSF 网膜产生大量的塑性变形吸收能量而使体系增韧, 不同于传统“海岛结构”的增韧结构和机理, 研究结果对开发高韧性先进复合材料基体和结构胶粘剂具有重要意义。
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| 关 键 词： | 复合材料 树脂基体 增韧 |
| 文章编号： | ： |
| 收稿时间： | 1999-04-14 |
| 修稿时间： | 1999-08-25 |
RESEARCH ON TOUGHENING MECHANISM IN PSF/EPOXY BLEND RESIN SYSTEM |
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| SUN Zhi-jie,YIN Li-xin,LIANG Zhi-yong,ZHANG Zuo-guang. RESEARCH ON TOUGHENING MECHANISM IN PSF/EPOXY BLEND RESIN SYSTEM[J]. Acta Materiae Compositae Sinica, 2000, 17(1): 42-45 |
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| Authors: | SUN Zhi-jie YIN Li-xin LIANG Zhi-yong ZHANG Zuo-guang |
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| Affiliation: | Materials Science and Engineering Department, Beijing University of Aeronautics and Astronautics, Beijing 100083 |
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| Abstract: | The relationship between the phase structure of PSF/epoxy blend system and brittle/ductile transition was investigated, and the toughening mechanism was analyzed by studying the peeling strength of PSF/epoxy system, DMA and SEM fracture morphology. The results show that the blend system demonstrates good toughness when dispersed epoxy particles are covered by the continuous PSF network film homogeneously, and the thickness of the film is less than 0.04μm. Meanwhile the plastic strain produced in the ductile PSF film on fracture makes the system more flexible, and a toughened structure and toughening mechanism are different from that of traditional “sea island” structure. This resulTis of significance to develop resin matrix with excellent toughness of advanced composites and structural adhesives. |
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| Keywords: | composite resin matrix toughening |
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