脱醇型透明有机硅披覆胶的制备及性能研究  

Preparation and Properties of Dealcoholized Transparent Silicone Conformal Coating

作　　者：叶世明 朱晓雨 王萌迪 张建 曾庆铭 YE Shiming;ZHU Xiaoyu;WANG Mengdi;ZHANG Jian;ZENG Qingming(Shandong Copolymer Silicone Technology Research Institute Co.,Ltd.,Weifang 261000,Shandong;College of Chemistry,Chemical Engineering and Materials,Jining University,Qufu 273100,Shandong)

机构地区：[1]山东共聚有机硅技术研究院有限公司,山东潍坊261000 [2]济宁学院化学化工与材料学院,山东曲阜273100

出　　处：《有机硅材料》2023年第1期48-52,共5页Silicone Material

摘　　要：以三甲氧基硅烷封端聚二甲基硅氧烷为基胶、甲基三甲氧基硅烷为交联剂、气相法二氧化硅为补强填料,添加增塑剂、增粘剂、催化剂制得脱醇型单组分室温硫化透明有机硅披覆胶,探讨了交联剂用量、补强填料用量和增粘剂种类对有机硅披覆胶性能的影响。较佳的配方为:交联剂用量8份、补强填料用量10份、增粘剂选用自制特种增粘剂,采用此配方制得的有机硅披覆胶表干时间为28 min,邵尔A硬度为40度,拉伸强度为2.5 MPa,拉断伸长率为115%,对镀膜玻璃、铝材、铜片、聚丙烯、有机玻璃、不锈钢的粘接性能良好,室温贮存18个月后保持透明并能正常硫化。Using trimethoxylsilane terminated polydimethylsiloxane as base adhesive, trimethoxylsilane as crosslinking agent and fumed silica as reinforcing filler, dealcoholizing RTV-1 transparent silicone conformal coating was prepared by plasticizer, tackifier and catalyst. The effects of the amount of crosslinking agent, the amount of reinforcing filler and the type of tackifier on the properties of silicone conformal coating were discussed. The formula is that 8 parts crosslinking agent, 10 parts reinforcing filler, and homemade tackifier. The silicone conformal coating prepared has excellent storage stability, yellow resistance, good mechanical properties, fast deep curing speed, good tensile strength and elongation at break. The surface drying time is 28 min, the Shore A hardness is 40 degrees, The tensile strength is 2.5 MPa, elongation at break is 115%, the adhesion performance for coated glass, aluminum, copper sheet, polypropylene, plexiglass, stainless steel is good, transparency and vulcanization are kept normal at room temperature for 18 months.

关 键 词：三甲氧基硅烷封端 聚二甲基硅氧烷 脱醇型 有机硅披覆胶 

分 类 号：TQ333.93[化学工程—橡胶工业]