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| 短切玻纤增强尼龙6的缺口拉伸性能 | |
| 引用本文： | 熊玉竹,田瑶珠,涂铭旌.短切玻纤增强尼龙6的缺口拉伸性能[J].工程塑料应用,2009,37(5). |
| 作者姓名： | 熊玉竹 田瑶珠 涂铭旌 |
| 作者单位： | 1. 四川大学材料科学与工程学院,成都,610065;贵州大学材料科学与冶金工程学院,贵阳,550003;贵州省材料结构与强度重点实验室,贵阳,550003 2. 贵州大学材料科学与冶金工程学院,贵阳,550003 3. 四川大学材料科学与工程学院,成都,610065 |
| 基金项目： | 贵州省自然科学基金项目 |
| 摘 要： | 研究了短切玻纤增强尼龙6（PA6／SGF）的缺口拉伸性能。结果表明，在实验速度范围（0．1～500mm／min）内，PA6／SGF的拉伸断裂功主要消耗在裂纹萌生过程。一旦裂纹源尺寸达到临界值，裂纹瞬间扩展。拉伸位移随着拉伸速度的增加而降低，最大力值随着拉伸速度的增加先提高后降低。当拉伸速度达到300mm／min后，最大力值和拉伸位移急剧下降导致拉伸断裂功大幅度下降。PA6／SGF的缺口拉伸断面主要分为裂纹萌生区及裂纹扩展区，基体的塑性变形主要集中在裂纹萌生区，剧烈的塑性变形可使基体上出现明显的孔洞。在裂纹扩展区，裂纹的快速扩展导致基体断面平坦，且由于SGF的阻碍作用，基体具有断裂分层现象。 |
| 关 键 词： | 短切玻纤增强尼龙6 缺口拉伸实验 裂纹萌生区 裂纹扩展区 |
NOTCHED TENSILE PROPERTY OF SHORT GLASS FIBER REINFORCED PA6 |
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| Xiong Yuzhu,Tian Yaozhu,Tu Mingjing.NOTCHED TENSILE PROPERTY OF SHORT GLASS FIBER REINFORCED PA6[J].Engineering Plastics Application,2009,37(5). | |
| Authors: | Xiong Yuzhu Tian Yaozhu Tu Mingjing |
| Affiliation: | 1.School of Materials Science and Engineering;Sichuan University;Chengdu 610065;China;2.School of Materials Science and Metallurgy Engineering;Guizhou University;Guiyang 550003;3.Key Laboratory for Material Strength and Structure of Guizhou Province;China |
| Abstract: | The notched tensile property of short glass fiber reinforced PA6(PA6/SGF) was studied. The results showed that the fracture work was mainly consumed in crack initiation process in tensile velocity range 0.1-500 mm/min. Crack quickly propagated as soon as the crack origin achieved critical value. The tensile displacement decreased with tensile velocity increasing. The maximum force firstly increased,and then decreased with tensile velocity increasing. After tensile velocity achieving 300mm/min,the rapid decr... |
| Keywords: | short glass fiber reinforced PA6 notched tensile test crack initiation region crack propagation region |
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