| PA6/CaCO3复合材料的单边缺口拉伸断裂研究 |
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| 引用本文： | 熊玉竹,田瑶珠,郝智.PA6/CaCO3复合材料的单边缺口拉伸断裂研究[J].工程塑料应用,2009,37(9). |
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| 作者姓名： | 熊玉竹 田瑶珠 郝智 |
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| 作者单位： | 1. 贵州大学材料与冶金学院,贵阳,550003;国家复合改性聚合物材料工程研究中心,贵阳,550009
2. 贵州大学材料与冶金学院,贵阳,550003 |
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| 基金项目： | 贵州省自然科学基金资助项目[2009(2053)] |
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| 摘 要： | 研究了尼龙6(PA6)/CaCO3复合材料的单边缺口拉伸断裂。结果表明,PA6/CaCO3复合材料在拉伸速率为0.1～300 mm/min的缺口拉伸实验中,裂纹扩展均为脆性断裂。断口主要分为塑性屈服变形区和弹性变形区两部分。塑性屈服变形区形貌是以缺口根部为底边的圆弧型,弹性变形区将塑性屈服变形区包围在里面。塑性屈服变形区面积到达临界尺寸后,材料瞬间断裂。断裂后观察到的塑性屈服变形区面积即为在该实验条件下的裂纹源面积。随着拉伸速率增加,其裂纹源面积减小,而弹性变形区域增加,弹性储存能的储存速度增加,在其裂纹源面积较小的情况下即可发生瞬间脆断。
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| 关 键 词： | 尼龙6/CaCO3复合材料 单边缺口拉伸 塑性屈服变形区 弹性变形区 |
SINGLE NOTCHED TENSILE FRACTURE OF PA6/CaCO3 COMPOSITE |
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| Xiong Yuzhu,Tian Yaozhu,Hao Zhi.SINGLE NOTCHED TENSILE FRACTURE OF PA6/CaCO3 COMPOSITE[J].Engineering Plastics Application,2009,37(9). |
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| Authors: | Xiong Yuzhu Tian Yaozhu Hao Zhi |
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| Affiliation: | 1.Department of Materials and Metallurgy;Guizhou University;Guiyang 550003;China;2.National Engineering Research Center for Compounding and Modification of Polymeric Materials;Guiyang 550009;China |
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| Abstract: | The single notched tensile fracture of PA6/CaCO3 composite is studied.In tensile velocity range(0.1-300 mm/min),crack propagation is brittle fracture.Fracture surface consists of plastic yield deformation area and elastic deformation area.Plastic yield area is arc-type based on the root bottom,while the plastic zone is surrounded by elastic deformation area.As soon as plastic deformation zone reaches critical size,the sample fractures quickly.So the plastic yield area is the crack initiation origin.With ten... |
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| Keywords: | PA6/CaCO3 composite single notched tensile plastic yield deformation area elastic deformation area |
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