摘要
以改性纳米TiO2、甲基丙烯酸甲酯(MMA)、丙烯酸甲酯(MA)、丙烯酸正丁酯(BA)和甲基丙烯酸十二氟庚酯(G04)为原料,通过乳液聚合法制备了TiO2-有机氟-聚丙烯酸酯复合乳胶。研究了纳米TiO2和G04的添加对复合乳胶膜性能的影响。结果表明:乳胶平均粒径约为88.54 nm,具有良好的抗紫外性能。XPS和EDS分析表明:含F链段会向胶膜-空气的表面迁移,且大量富集在膜外空气界面。当G04含量为20%时,胶膜的吸水率为10.21%,水接触角为124.21°,相比纯丙乳胶膜,其疏水性大幅提高。且乳胶膜具有良好的耐热稳定性、抑制黑曲霉菌等性能,复合乳胶可以在基材表面形成疏水抑菌防霉的防护膜。相比于含氟聚丙烯酸酯,纳米TiO2的添加进一步改善了复合乳胶膜的耐磨性和抗污性等应用性能。
A nano-TiO2/organic fluorine/polyacrylate composite latex was prepared by using the silyl-modified nano-TiO2,dodecafluoroheptyl methacrylate(G04),methyl methacrylate(MMA),methyl acrylate(MA)and butyl acrylate(BA)as raw materials through emulsion polymerization process.The influences of nano-TiO2 and organic fluorine on the properties of composite latex film were investigated.The results showed that the average size of composite latex particles was about 88.54 nm,which provided good UV resistance.XPS and EDS analysis showed that the F-containing segments would migrate to the interface of the filmair,and a large amount of the fluorine would be enriched in the outer interface of the film.When the fluorine content was 20%,the water absorption of the film was 10.21%,and the water contact angle was 124.21°,and compared with pure acrylic latex film,its hydrophobicity was significantly improved.The latex film presented good heat resistance and inhibition of aspergillus niger.Compared to fluorinated polyacrylate,the addition of nano-TiO2 further improved the wear resistance and anti-fouling properties of the latex film.The composite latex could form a hydrophobic,antibacterial and mildew resistant protective film on the surface of the substrate.
作者
隋智力
陈辉
高艳华
孟媛
张巍
王征飞
Sui Zhili;Chen Hui;Gao Yanhua;Meng Yuan;Zhang Wei;Wang Zhengfei(Urban Construction School,Beijing City University,Beijing 100083,China;Planning and Design Institute of Forest Products Industry State Forestry and Grassland Administration,Bwijing 100083,China)
出处
《涂料工业》
CAS
CSCD
北大核心
2020年第7期42-48,共7页
Paint & Coatings Industry
基金
北京市教育委员会科技计划一般项目(KM202011418001)。
关键词
纳米TIO2
有机氟
聚丙烯酸酯
疏水性
抑菌性
抗污性
nano-TiO2
organic fluorine
polyacrylate
hydrophobicity
antibacterial property
anti-fouling property
