摘要
采用新型功能单体二聚酸,通过半连续种子乳液聚合法制得了性能优异的纳米级改性丙烯酸酯乳液。考察了二聚酸用量对乳胶膜性能的影响,并采用粒径分析、DSC、FTIR分析对其进行表征。结果表明,在引入二聚酸单体用量为6.5%,复合乳化剂用量为2.3%,引发剂用量为0.7%时,合成的微乳液固含量达46.6%,粒径在90nm左右,并具有分布窄的特点。合成的乳液可实现室温交联,涂膜硬度高,综合性能好,尤其耐水性得到了很大提高。
An acrylic nano-emulsion was produced with new functional monomer dimer acid through semi-continuous seed emulsion polymerization method. The influence of addition of dimer acid on the properties of latex film was investigated and its characteristics were represented by particle size analysis,DSC and FTIR analysis. The results showed that when the introduced percentage of dimer acid,compound emulsifier and initiator is 6.5% ,2.3% ,and 0.7% respectively,solid content of synthesized micro-emulsion reached 46.6% ,the particle size is determined around 90 nm and the distribution is narrow. The synthesized emulsion can be cross-linked at room temperature,with high film hardness,good ow;rall performance,and particularly higher water resistance has been greatly improved.
出处
《新型建筑材料》
北大核心
2009年第10期6-10,共5页
New Building Materials
基金
教育部博士点基金新教师项目(20070532017)
长沙市科技计划重点项目(K0901030-11)
关键词
二聚酸
乳液聚合
纳米级乳液
吸水率
rimer acid
emulsion polymerization
nano-emulsion
water absorption
