【摘要】 将γ -甲基丙烯酰氧基丙基三甲氧基硅烷中水解速度较快的甲氧基置换成水解速度较慢的乙氧基或异丙氧基 ,通过乳液共聚 ,合成了新型高硅烷含量的硅丙复合乳液。用核磁共振 (NMR)对新型硅烷单体进行了结构表征 ,并采用傅里叶红外光谱 (FTIR)证实了共聚物结构。聚合物膜的应力 -应变及耐水性测试结果表明 :该聚合物具有优良的力学性能和较强的耐水性。用此硅丙乳液配制了一种高性能外墙乳胶漆 ,其各项性能指标均达到或超过了GB/T975 5— 1995国家一级品的标准。更多还原

【Abstract】 A new high silane content silicone modified acrylic emulsion has been prepared by substitution of the methoxyl that is easy to be hydrolyzed in [γ-(methyl acryloyloxy)propyl ]trimethoxysilane,with ethoxyl or isopropoxy that show slow hydrolyzing rate.The structure of the new silicone monomer is characterized by use of NMR and the copolymer is characterized by FTIR.The results of stress-strain and water resistance tests show that the polymer can provide excellent mechanical properties and good water resistance .The technical properties of a high performance exterior decorative coating based on this silicone modified emulsion are similar or superior to the specified specifications for grade 1 product in the national standard GB/T 9755-1995.更多还原