Application of acoustic emission measurements to investigate adhesion in filled polymeric composites

被引:5
作者
Miller, AC
Minko, S
Berg, JC
机构
[1] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
关键词
acoustic emission; interfacial strength; organofunctional silanes; Lewis acid-base interactions; mechanical interlocking;
D O I
10.1080/00218460108029604
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Adhesion in filled polymeric composites is characterized by an acoustic technique in which specimens of the composites are subjected to a ramped uni-axial tensile stress while particle-matrix debonding events are detected acoustically. The maximum in a fitted distribution of debonding events as a function of applied stress is related to the interfacial strength using elasticity theory. Results are reported for different silane-treated and untreated glass and aluminum spheres embedded in a poly(vinyl butyral) matrix. Silane treatment profoundly affects the adhesive strength, with the strongest bonds being formed when acid-base interactions between the particle surface and the matrix polymer are promoted. Significant differences are also found between the aluminum-particle and glass-particle cases, attributable in part to differences in mechanical interlocking.
引用
收藏
页码:257 / 266
页数:10
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