核壳型叔碳改性氟丙乳液的合成与性能  

Preparation and Performance of Core-Shell Structure Fluorocarbon-Acrylate Emulsion Modified by Versatate Carbonate

作　　者：李玉峰[1] 祝晶晶[1] 于周茂[1] 

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《材料保护》2013年第5期11-13,3,共3页Materials Protection

基　　金：教育部科学技术研究重点项目(211051);黑龙江省自然科学基金面上项目(E201138);齐齐哈尔大学研究生创新科研项目(YJSCX2011-031X)资助

摘　　要：氟碳丙烯酸酯(氟丙)乳液是水乳胶涂料的主要成膜物质之一。为了提高其耐水性、附着力等性能,通过种子乳液聚合法将叔碳酸酯(VC)和氟碳丙烯酸酯(FA)功能单体引入丙烯酸酯共聚乳液,制备了核壳型叔碳改性氟丙乳液,采用透射电子显微镜、红外光谱、耐水性、附着力等对乳液及乳胶膜进行了测试表征,并考察了氟碳单体用量、叔碳单体加料方式及用量、核壳质量比对乳液聚合及乳胶膜性能的影响。结果表明:当氟碳单体用量为8%,叔碳单体加入壳中且用量为6%,核壳质量比为1∶1时,制备的乳液具有明显的核壳结构,乳胶膜接触角可达105.5°,吸水率仅为3.7%,附着力为1级。Versatate carbonate (VC) and fluorocarbon acrylate (FA) as functional monomers were introduced into acrylic copolymer emulsion to prepare core-shell structure fluorocarbon acrylate emulsion modified by VC. The micro-morphology and chemical structure of as-prepared emulsion were analyzed with a transmission electron microscope and an infrared spectrometer. The water resistance and adhesion to substrate of the modified emulsion and its coating were measured. Furthermore,the influences of amount of FC,feeding mode and amount of VC,and core/shell mass ratio on emulsion polymerization and the properties of as-prepared emulsion were investigated. Results indicated that the emulsion prepared at FA monomer dosage of 8%,VC monomer dosage of 6%,and core/shell mass ratio of 1 ∶ 1 possessed obvious core-shell structure, and the coating made of it had a water contact angle of 105. 5°,a water-absorption rate of only 3. 7%,and an adhesion of Grade 1.

关 键 词：氟丙乳液 核壳型 改性 叔碳酸酯 乳液聚合 

分 类 号：TQ633[化学工程—精细化工]