家电装配用双组分快速室温硫化有机硅粘接剂的研制  

Preparation of Two-component Fast Curing RTV Silicone Adhesive for Home Appliance Assembly

作　　者：邓伟伟 李吉明 苏立宏 刘桂恒 DENG Wei-wei;LI Ji-ming;SU Li-hong;LIU Gui-heng(Guangzhou Mechanical Engineering Research Institute Co.,Ltd.t Guangzhou 510700,Guangdong;National Engineering Research Center of Rubber and Plastic Sealing,Guangzhou 510700,Guangdong)

机构地区：[1]广州机械科学研究院有限公司,广州510700 [2]国家橡塑密封工程研究中心,广州510700

出　　处：《有机硅材料》2020年第3期28-31,共4页Silicone Material

摘　　要：针对家电装配行业对粘接剂快速硫化的需求,以α,ω-二羟基聚二甲基硅氧烷、烷氧基封端聚二甲基硅氧烷为主要原料,添加硅微粉、活性纳米碳酸钙、气相法白炭黑、交联剂、偶联剂、催化剂、硫化促进剂制得双组分脱醇型室温硫化有机硅粘接剂。研究了硫化促进剂用量、烷氧基封端聚二甲基硅氧烷类型、交联剂用量和种类、偶联剂种类对有机硅粘接剂硫化速率的影响。结果表明,随着硫化促进剂用量的增加,有机硅粘接剂的硫化速率增加,硫化促进剂较佳用量为1%;3种烷氧基封端聚二甲基硅氧烷制得的有机硅粘接剂硫化速率由快到慢依次为:三甲氧基封端>二甲氧基封端>三乙氧基封端,选用三甲氧基封端聚二甲基硅氧烷较佳;随着交联剂用量的增加,有机硅粘接剂的硫化速率先升后降,交联剂优选聚硅酸乙酯(Si-40),较佳用量为10%;偶联剂优选γ-氨丙基三甲氧基硅烷与γ-(2,3-环氧丙氧)丙基三甲氧基硅烷复配物。In view of the demands for fastcuring adhesives in home appliance assembly industry,a two-component dealcoholized room temperature vulcanized(RTV)silicone adhesive was prepared byα,ω-dihydroxypolydimethylsiloxane and alkoxy terminated polydimethylsiloxane as main raw materials,and silica micropowder,active nano calcium carbonate,fumed silica,cross-linking agent,coupling agent,catalyst and vulcanization promoter.The effects of the amount of curing accelerator,the types of alkoxy terminated polydimethylsiloxane,the amounts and types of crosslinking agent,and the types of coupling agent on the curing rate of silicone adhesive were studied.Results show that with the increase of vulcanizing accelerator,the curing rate of silicone adhesive increases,and the optimal content of vulcanizing accelerator is 1%;the vulcanization rate of silicone adhesive made of three kinds of alkoxy terminated polydimethylsiloxane from high to low is as follows:trimethoxy>dimethoxy>triethoxy.The trimethoxy terminated polydimethylsiloxane has a better property with the increase of crosslinking agent.The vulcanization rate of silicone adhesive first increases and then decreases,and the preferred crosslinking agent of polysilicate ethyl ester(Si-40)has amount of 10%.The preferred coupling agent is a complex ofγ-aminopropyltrimethoxysilane andγ-(2,3-epoxy)propyltrimethoxysilane.

关 键 词：家电装配 快速硫化 双组分 有机硅 粘接剂 

分 类 号：TQ333.93[化学工程—橡胶工业]