Mechanical properties of NBR/clay nanocomposites by using a novel testing system

被引:27
|
作者
Ahmadi, Seyed Javad [1 ,4 ,5 ]
G'Sell, Christian [2 ]
Huang, Yudong [3 ]
Ren, Nanqi [4 ,5 ]
Mohaddespour, Ahmad
Hiver, Jean-Marie [2 ]
机构
[1] Nucl Sci & Technol Res Inst, Tehran, Iran
[2] Ecole Mines Nancy INPL, Phys Mat Lab, F-54042 Nancy, France
[3] Harbin Inst Technol, Fac Sci, Dept Appl Chem, Harbin 150001, Peoples R China
[4] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
[5] Univ Tehran, Univ Coll Engn, Dept Chem Engn, Tehran, Iran
关键词
Nanoclays; Nanocomposites; Mechanical properties; Matrix cracking; Stress/strain curves; LAYERED SILICATE NANOCOMPOSITES; CLAY NANOCOMPOSITES; MELT INTERCALATION; MORPHOLOGY; POLYPROPYLENE; IRRADIATION;
D O I
10.1016/j.compscitech.2009.07.014
中图分类号
TB33 [复合材料];
学科分类号
摘要
NBR/clay nanocomposites are prepared by two different filler types: clay microparticles and clay nanoparticles. The morphology properties of all specimens are explored by XRD and SEM. The mechanical properties are characterized by means of a novel video-controlled method under uniaxial tension. Apart a limited increase in tensile stress at small strains, the ultimate stress at rupture of nanocomposites is much higher than microcomposites. The most dramatic phenomenon is the development of volume strain while the materials are stretched. The nucleation of voids is much more active in composites containing the filler with higher specific surface when the cavitation occurs at the poor interface between the clay platelets and the rubber matrix. In turn, the existence of very diffuse voids hinders the propagation of cracks and retards the rupture process. DMA results reveal that the interfacial action of NBR molecules with layered silicates increases with the degree of intercalation. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2566 / 2572
页数:7
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