丙烯酸酯乳液的成膜性能  

Film Formation Performance of Acrylate Emulsion

作　　者：吴跃焕[1,2] 赵建青[1] 暴志菊 

机构地区：[1]华南理工大学材料科学与工程学院 [2]太原工业学院应用化学系,太原030008 [3]新华化工有限公司

出　　处：《化学建材》2008年第3期17-21,共5页Chemical Materials for Construction

基　　金：广州市科技攻关(2005Z3-D0331);山西省自然科学基金(2007011035);山西省科技攻关(051150);山西省高校科技研究开发(20041251)

摘　　要：通过最低成膜温度和玻璃化温度的测试,系统地考察了粒径、成膜温度、水的塑化作用对丙烯酸酯乳液成膜性能的影响,并进一步对具有特殊分子形态的寡链聚合物的成膜过程进行了研究。结果表明,乳液的成膜变形力随粒径的减小而增大;聚合物的亲水性越大,水的塑化作用越强;成膜温度太高,分子链在空间构象上的物理缠绕程度减小,形成涂膜抵抗外力的能力下降。寡链高聚物由于分子链间的缠结密度较小和具有较高的构象能,因此成膜变形力大于相互穿透的多分子链聚合物。By tests on minimum film forming temperature and vitrification point, effects of various factors such as particle size, film forming temperature and plastication of water on film formation performance of acrylate emulsion were investigated systematically and further study was carded out of film forming process of pauci-chain polymer with specialty molecular morphology. Testing results showed that deformation force of film formation for emulsion increased with decrease of particle size. The bigger the hydrophilicity of polymer, the stronger the plastication of water. Over high film forming temperature would reduce physical wrap of polymer molecular chain on space conformation, resulting in drop of film capacity against outer force. Owing to low density of molecular chain inter-twist and high conformation energy, film forming deformation force of pauci-chain high polymer was greater than that of multi-chain interpenetrated polymer.

关 键 词：纯丙乳液 苯丙乳液 成膜过程 塑化作用 寡链聚合物 

分 类 号：TQ630.7[化学工程—精细化工]