Vu-Khanh参数在表征高聚物共混物断裂韧性中的应用  

Application of Vu-Khanh Parameters in Assessment of Fracture Toughness of Polymer Blends

作　　者：陈志成[1] 孙树林[1] 张芳芳[1] 杨海东[1] 张会轩[1] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012

出　　处：《高分子材料科学与工程》2008年第4期28-32,共5页Polymer Materials Science & Engineering

摘　　要：Vu-Khanh plot作为高聚物共混物断裂韧性的表征方法,与J积分、基本断裂功相比具有显著的优点,因此逐渐受到高分子材料研究领域的广泛重视。主要介绍了Vu-Khanh plot表征聚合物断裂韧性的基本原理、参数的测试方法、在高聚物共混物研究中的应用,并且讨论了Vu-Khanh参数——裂纹引发断裂能Gi和撕裂模量Ta的影响因素和二者之间的关系。Vu-Khanh plot, as a method for assessment of fracture toughness of polymer blends, has an outstanding merit compared to J-integral and essential work of fracture and is increasingly used in polymeric material researching field. The principle of Vu-Khanh plot, measurement of Vu-Khanh parameters and application in the research of polymer blends were introduced. At the same time, the factors that influence the Vu-Khanh parameters-- the fracture energy at crack initiation, Gi and the tearing modulus, Ta-- and the correlation between the two parameters were discussed.

关 键 词：Vu-Khanhplot 断裂韧性 裂纹引发断裂能 撕裂模量 

分 类 号：O631.31[理学—高分子化学]