低温固化硅树脂的制备及其防腐蚀涂层性能研究  

Preparation of low-temperature curing silicone resin and property of its anticorrosion coating

作　　者：李玉峰[1] 李继玉 张若男 祁实 高晓辉[2] 张毅志[2] Li Yufeng;Li Jiyu;Zhang Ruonan;Qi Shi;Gao Xiaohui;Zhang Yizhi(College of Materials Science and Engineering,Qiqihar University,Qiqihar 161006;College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,齐齐哈尔161006 [2]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《化工新型材料》2019年第10期79-82,87,共5页New Chemical Materials

基　　金：黑龙江省省属高等学校基本科研业务费科研项目（135209214）

摘　　要：以硅酸乙酯(TEOS)、乙烯基三乙氧基硅烷(VTES)和二甲基二甲氧基硅烷(DMDMS)为硅烷单体,以柠檬酸为催化剂,采用溶胶-凝胶法制备乙烯基甲基硅树脂,并添加固化剂γ-氨丙基三乙氧基硅烷(APTES)使制备的硅树脂可以在较低温度(50℃)下固化。采用红外光谱(FT-IR)对比硅树脂固化前后的结构变化;通过接触角、吸水率、电化学阻抗谱(EIS)测试了不同n(R)/n(Si)、n(Si-OCnH2n+1)/n(H2O)、pH以及固化剂用量对硅树脂涂层耐水性和防腐蚀性能的影响。结果表明:当n(R)/n(Si)=1.4/1、n(Si-OCnH2n+1)/n(H2O)=0.2/0.2、pH=2.6、固化剂用量为4%(质量分数)时,涂层具有较好的性能。Vinylmethyl silicone resin was prepared by sol-gel method with tetraethyl orthosilicate(TEOS),vinyl triethoxy silane(VTES),and dimethyl dimethoxysilane(DEDES)as silane monomers,and citric acid as catalyst.The resin could cure at low temperature(50℃)by usingγ-aminopropyl triethoxy silicon(ATES)as hardener.FT-IR was used to compare the structure of silicon resin before and after cured.The hydrophobic and anticorrosion properties of coatings with different n(R)/n(Si),n(Si—OCnH2n+1)/n(H2O),pH and content of hardener were tested by contact angle,water absorption,and electrochemical impedance spectroscopy(EIS).The results showed that the coating had best properties when n(R)/n(Si)=1.4/1,n(Si—OCnH2n+1)/n(H2O)=0.2/0.2,pH=2.6 and content of hardener was 4wt%.

关 键 词：乙烯基甲基硅树脂 Γ-氨丙基三乙氧基硅烷 低温固化 防腐蚀 

分 类 号：TQ3[化学工程]