| 加载速度对聚苯乙烯、聚碳酸脂脆性断面形态及特征尺寸的影响 |
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| 引用本文： | 罗筑,于杰,刘其斌,刘一春,徐涛,朱维东.加载速度对聚苯乙烯、聚碳酸脂脆性断面形态及特征尺寸的影响[J].贵州工业大学学报(自然科学版),1996(4). |
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| 作者姓名： | 罗筑 于杰 刘其斌 刘一春 徐涛 朱维东 |
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| 作者单位： | 贵州工学院材料中心 |
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| 摘 要： | 通过对不同加载速度下的聚苯乙烯、聚碳酸脂三点弯曲试样断面形态特征进行仔细的观察分析和测量,考察了断面形态及其特征尺寸随加载速度产生的变化,并对其机制进行了探讨。结果表明：随加载速度增大,断面镜面区（ＰＳ）、平坦区（ＰＣ）尺寸减小,并在超过某一加载速度后趋于恒定;肋条（ＰＳ）和周期条纹（ＰＣ）宽度线性减小。
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| 关 键 词： | 聚合物 断面形态 加载速度 |
THE EFFECTS OF LOADING RATE ON BRITTLE FRACTURE SURFACE MORPHOLOGIES AND CHARECTERISTIC SIZES OF POLYSTYRENEAND POLYCARBONATE |
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| Luo Zhu,Yu Jie,Liu Qibin,Liu Yichun,Xu Tao,Zhu Weidong.THE EFFECTS OF LOADING RATE ON BRITTLE FRACTURE SURFACE MORPHOLOGIES AND CHARECTERISTIC SIZES OF POLYSTYRENEAND POLYCARBONATE[J].Journal of Guizhou University of Technology(Natural Science Edition),1996(4). |
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| Authors: | Luo Zhu Yu Jie Liu Qibin Liu Yichun Xu Tao Zhu Weidong |
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| Abstract: | At different loading rates,the fracture surfaces of PC and PS specimens subjected to the three-point bending test are carefully observed and measured. The changing regularity of the morphologies and characteristic sizes on the fracture surfaces is studied. The results show that the sizes of "mirror" zone (PS) and "flat" zone (PC) decrease with an increasing loading rate,and they tend to be constant when the loading rate exceeds certain values.The widths of "Rib" structure (PS) and "Periodic streak" (PC) linearly decrease with an increasing loading rate. |
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| Keywords: | Polymer fracture surface morphology loading rate |
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