环氧基POSS改性环氧树脂的研制与性能研究

Preparation and properties of epoxy POSS modified epoxy resin

以苯基三乙氧基硅烷(PTES)和β-3,4-环氧环己基乙基三甲氧基硅烷(A186)为原料,甲醇、乙醇混合溶液为溶剂,酸性条件下水解制得含有Si-H键的环氧基低聚倍半硅氧烷(EP-POSS),通过傅里叶红外光谱(FT-IR)、核磁共振氢谱(1H NMR)、核磁共振硅谱(29Si NMR)等手段对其结构进行表征。用制备的EP-POSS对环氧树脂进行改性,分析了EP-POSS用量对树脂涂层附着力、耐冲击性、疏水性、耐热稳定性的影响。结果表明:当EP-POSS加入量为5%时,环氧树脂涂层附着力达到1级,耐冲击性达到50 cm,对水的接触角为90°,热稳定性大幅提升。

With phenyltriethoxysilane(PTES)andβ-3,4-cyclohexyl epoxy silane preparation oxygen radicals(A186)as raw material,mixing methanol and ethanol as solvents,the reaction is carried out under acidic conditions to prepare compounds with Si-H bonds called epoxy oligosilsesquioxane(EP-POSS).The structures of the compounds were characterized by Fourier transform infrared(FT-IR),nuclear magnetic resonance(1H NMR),and nuclear magnetic resonance(29Si NMR).The epoxy resin was modified with the prepared EP-POSS,and the influence of the amount of EP-POSS on the adhesion,impact resistance,hydrophobicity and heat resistance of the resin coating was analyzed.The results showed that when the amount of EP-POSS is 5%,the adhesion of the epoxy resin coating reached grade 1,the impact resistance reached 50 cm,the contact angle to water is 90°,and the thermal stability is greatly improved.