尼龙-1313增强氯丁橡胶复合材料的失效机理  

Failure Mechanism of Nylon-1313 Reinforced Chloroprene Rubber Composites

作　　者：田飞 李世芸[1] 乔亚慧 TIAN Fei;LI Shiyun;QIAO Yahui(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Tianjin Institute of Shipbuilding Technology,Tianjin 300450,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500 [2]天津修船技术研究所,天津300450

出　　处：《船舶与海洋工程》2020年第5期61-64,69,共5页Naval Architecture and Ocean Engineering

摘　　要：为预测静力纵向拉伸载荷对尼龙-1313增强氯丁橡胶复合材料的影响规律,给该材料的失效机理和力学性能分析提供数据支持,在制备不同厚度的复合材料拉伸试件之后,通过在MTS机上对其进行静力纵向拉伸试验,分析其拉伸失效机理和力学性能。结果表明:不同厚度的复合材料试件先后经历弹性变形、尼龙布脱黏和断裂及基体断裂失效等3个阶段;随着复合材料厚度的增加,试件的拉伸失效强度增大,但当厚度超过5.0 mm之后,尼龙布与氯丁橡胶之间的黏接强度是试件失效不可忽略的因素,其失效应力急剧下降;但弹性变形阶段弹性模量和最大位移并没有出现较大波动,而是趋于稳定。In order to predict the effect of static longitudinal stretching load on nylon-1313 enhanced neoprene composite materials,and to provide data support for the failure mechanism and mechanical properties of the material,the stretch failure mechanism and mechanical properties of the composite material are analyzed by static longitudinal stretching test on the MTS machine with the test samples made of the composite material of different thickness.The results show that the composite specimens with different thickness have undergone three stages including elastic deformation,nylon cloth debonding and fracture,and matrix fracture failure.The tensile failure strength of the specimen increases along with the increase of the thickness of composite material,but the bond strength between nylon cloth and chloroprene rubber becomes a factor that cannot be ignored when the thickness exceeds 5.0 mm,and the failure stress will drop sharply while big fluctuations of the elastic modulus and the maximum displacement do not appear in the elastic deformation stage,which tend to be stable.

关 键 词：氯丁橡胶 尼龙-1313 拉伸试验 失效机理 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]