| 热固性树脂的刚性增韧 Ⅰ、环氧-聚砜体系的断裂韧性及其增韧机理 |
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| 引用本文： | 殷立新,王凤处. 热固性树脂的刚性增韧 Ⅰ、环氧-聚砜体系的断裂韧性及其增韧机理[J]. 复合材料学报, 1991, 0(3) |
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| 作者姓名： | 殷立新 王凤处 |
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| 作者单位： | 北京航空航天大学材料科学与工程系,北京航空航天大学材料科学与工程系 北京 100083,北京 100083 |
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| 摘 要： | 用斜削双悬臂梁试件测试环氧-聚砜体系的断裂韧性(G_1c)表明:该体系有较高的G_1c值,并且G_(IC)与G_(Ia)相近,也就是其断裂韧性与止裂韧性相当;比较该体系G_(IC)的温度谱和动态力学性能(DMA)的温度谱说明,该体系韧性与其粘弹性有关;分析扫描电镜(S~-M)的照片可以看出,该体系由韧性聚合物的连续相包络热固性树脂固化球粒,即“网络-球粒”结构,这种结构是导致该体系高韧性的原因。
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| 关 键 词： | 增韧 断裂能 环氧-聚砜 |
TOUGHENING OF THERMOSETS WITH HIGH MODULAR POLYMERS I.THE FRACTURE ENERGY AND THE TOUGHENING MECHANISM OF EPOXY-PSF SYSTEM |
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| Yin Lixin Wang Fengchu. TOUGHENING OF THERMOSETS WITH HIGH MODULAR POLYMERS I.THE FRACTURE ENERGY AND THE TOUGHENING MECHANISM OF EPOXY-PSF SYSTEM[J]. Acta Materiae Compositae Sinica, 1991, 0(3) |
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| Authors: | Yin Lixin Wang Fengchu |
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| Affiliation: | Yin Lixin Wang FengchuDepartment of Materials Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing,China |
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| Abstract: | In this paper the fracture energy GIC of epoxy-PSF system has been tes-ted with TDCB (Tapered-double-cantilever beam) samples. The results show that this system not only has a high GIC value, but also .GI and GI2 are almost equal. Comparing the GIc temperature char with dynamic mechanical properties(DMA),we find that the toughness of the system relates to its visco-elastic properties. From the SEM photographs, a structure that the tenacious polymer as an uninterrupted phase,wraps thermosetting spherule,i.e. a"networ-kmicrospherule" structure was observed. It is this structure that makes the GIC of epoxy-PSF system high. |
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| Keywords: | toughening fracture energy cpoxy-PSF |
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