The Effect of Surface Preparation and Exposure Environment on the Bond Failure Processes in Adhesively Bonded Sheet Molded Composite (SMC)
The Effect of Surface Preparation and Exposure Environment on the Bond Failure Processes in Adhesively Bonded Sheet Molded Composite (SMC)
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DOI：
10.1080/00218469508028163
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发表时间：
1995
影响因子：
2.2
通讯作者：
J. Wells;B. Thompson;J. Dillard
中科院分区：
文献类型：
--
作者：
J. Wells;B. Thompson;J. Dillard
摘要采用楔形试件研究了胶接复合材料的耐久性。采用双组分聚氨酯胶粘剂对聚酯树脂-玻璃纤维模压复合材料（SMC）进行粘接。SMC复合材料接受四种不同表面处理之一：无处理、磨损、涂底漆或磨损和涂底漆。楔形试验用于研究暴露于空气和水上方的蒸汽、浓氢氧化铵或60[ddot]C下的甲醇的样品的耐久性。在实验过程中测量了裂纹长度。裂纹扩展速率随表面处理方式的变化规律为：未处理的表面磨损>涂底漆的表面磨损>涂底漆的表面磨损。裂纹扩展速率随水蒸气的变化规律为：甲醇>氢氧化铵>水≈空气。在试验结束时取出样品，并通过扫描电子显微镜（SEM）和X射线光电子能谱（XPS）目视确定失效模式。在...
Abstract The durability of adhesively-bonded composites has been investigated using a wedge-type specimen. Polyester-resin, fiberglass sheet molded composite (SMC) was bonded with a commercial two-part poly-urethane adhesive. The SMC composite received one of four different surface preparations: no treatment, abrasion, priming, or abrasion and priming. The wedge test was used to study the durability of the samples which were exposed to air and to the vapor above water, concentrated ammonium hydroxide, or methanol at 60[ddot]C. The crack length was measured during the experiments. The crack growth rate as a function of surface treatment varied in the manner: untreated ≈ abraded > primed ≈ abraded and primed. The crack growth rate as a function of vapor changed in the manner: methanol > ammonium hydroxide > water ≈ air. The samples were removed at the conclusion of the test and the failure mode was determined visually, by scanning electron microscopy (SEM), and by X-ray photoelectron spectros-copy (XPS). In...