| 温度对聚氯乙烯缺口冲击强度及断面粗糙度的影响 |
| |
| 引用本文： | 于杰,金志浩,周惠久. 温度对聚氯乙烯缺口冲击强度及断面粗糙度的影响[J]. 材料研究学报, 1993, 7(6): 536-540 |
| |
| 作者姓名： | 于杰 金志浩 周惠久 |
| |
| 作者单位： | 西安交通大学 博士研究生(于杰)，西安交通大学 贵阳550003(金志浩)，西安交通大学 贵州工学院冶金系(周惠久) |
| |
| 摘 要： | 研究了温度对聚氯乙烯 PVC 缺口冲击强度、断口形貌特征及断面粗糙度的影响。结果表明,PVC 缺口冲击强度和断面粗糙度参数 R_s 随温度变化,在脆化温度 T_h 处存在极小值,前者取决于真实断裂表面积大小;后者受控于局部高强变形及裂纹分叉扩展综合作用。低温冲击断面上易观察到裂纹分叉扩展形成的弧形条纹及分层。
|
| 关 键 词： | PVC 温度 冲击强度 断面粗糙度 |
| 收稿时间： | 1993-12-25 |
| 修稿时间： | 1993-12-25 |
EFFECTS OF TEMPERATURE ON IMPACT STRENGTH AND FRACTURE SURFACE ROUGHNESS OF PVC |
| |
| YU Jie,JIN zhihou,ZHOU huijiu. EFFECTS OF TEMPERATURE ON IMPACT STRENGTH AND FRACTURE SURFACE ROUGHNESS OF PVC[J]. Chinese Journal of Materials Research, 1993, 7(6): 536-540 |
| |
| Authors: | YU Jie JIN zhihou ZHOU huijiu |
| |
| Affiliation: | Xi'an Jiaotong University |
| |
| Abstract: | The effects of testing temperature on notch impact strength,fractographic fea-tures and fracture surface roughness of PVC have been studied.The results show that there areminimum value of notch impact strength and fracture surface roughness of PVC with changingtesting temperature.Notch impact strength is controlled by the area of real fracture surface.Thefracture surface roughness depends on both micro plastic deformation and crack branching.Thefringe lines and stratification due to crack branching are easily observed on lower temperatureimpact fracture surface. |
| |
| Keywords: | PVC temperature impact strength fracture surface roughness |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《材料研究学报》浏览原始摘要信息 |
|
点击此处可从《材料研究学报》下载全文 |
