Effect of temperature on the joint strength of a silyl-modified polymer-based adhesive |
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Authors: | Jingxin Na Yu Liu Yisa Fan Wenlong Mu Yakun Yan |
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Affiliation: | State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, P.R. China |
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Abstract: | Temperature is a very important factor that must be fully considered in the study on the adhesive joint strength. In this paper, a silyl-modified polymer-based adhesive ISR 70-08 which is widely used in engineering was studied. Dog-bone specimens were fabricated and tested at ?40°C, room temperature (RT), and 90°C. Results show a decrease in the main mechanical properties with increasing temperature. Butt joints (BJs), single-lap joints (SLJs), and Scarf joints (SJs) were fabricated and tested at different temperatures. A quadratic polynomial expression was an ideal choice to express the joint strength as a function of temperature which was obtained using the least-squares method. Temperature combinations of ?40°C, 0°C, and 90°C were obtained to study the effect of temperature on the joint strength more easily for this adhesive. A three-dimensional surface, consisting of temperature, adhesive angle, and joint strength was presented to facilitate the application of bonding structures in engineering |
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Keywords: | Aluminium and alloys butt joints lap-shear mechanical properties of adhesives polyurethane |
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