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以高性能航空KH-CL-RTV-2型硅橡胶作为胶粘剂,采用单因素试验法着重考察了固化工艺、稀释剂用量、金属基材、单双面喷胶、胶层厚度和填料等因素对胶粘剂粘接强度的影响,从而优选出胶接件的最佳施胶工艺;最后利用硅橡胶黏度-时间曲线对胶接件的固化过程进行了验证和解释。研究结果表明:稀释剂环己烷用量对胶接件的粘接强度无影响;胶接件的最佳施胶工艺是双面喷胶、胶层厚度为0.50 mm、被粘基材为除油打磨处理后的铝合金、固化温度为50℃和固化时间为36 h,此时胶接件的粘接强度(为3.04 MPa)相对较大。
Using high performance aviation KH-CL-RTV-2 type silicone rubber as adhesive, the influence of curing process, dosage of diluent, metal substrate, single and double-side adhesive spraying, adhesive layer thickness and filler on single factor test Adhesive bonding strength of the adhesive, so as to optimize the best sizing process glue; Finally, the use of silicone rubber viscosity - time curve of the curing process was verified and explained. The results show that: the amount of cyclohexane diluent has no effect on the adhesive strength of the adhesive; the best sizing process of the adhesive is double-sided adhesive, the thickness of the adhesive layer is 0.50 mm, After grinding the aluminum alloy, the curing temperature is 50 ℃ and the curing time is 36 h. At this time, the bonding strength of adhesive (3.04 MPa) is relatively large.