CAJ | 학술논문

采用原位无皂乳液聚合工艺，以丙烯酸酯为溶剂，以纳米SiO2（nano‐sio2）为功能单体，合成纳米SiO2改性含氟聚氨酯‐聚丙烯酸酯（WSFPU A ）分散液．通过傅立叶红外光谱（FT‐IR）、动态激光散射仪（DLS）、透射电镜（TEM）和原子力显微镜（AFM）对 WSFPUA 进行了结构表征．利用光学接触角测量仪、万能材料试验机和热重分析仪分别对WSFPUA 乳胶膜的防水性、机械强度和热稳定性进行了分析．结果表明，纳米SiO2含量为6％（占总固含量的质量百分数）时，乳胶膜接触角达到122．5°、吸水率下降到8．5％，抗拉强度提高了15％，热分解温度提高了20℃．
채용원위무조유액취합공예，이병희산지위용제，이납미SiO2（nano‐sio2）위공능단체，합성납미SiO2개성함불취안지‐취병희산지（WSFPU A ）분산액．통과부립협홍외광보（FT‐IR）、동태격광산사의（DLS）、투사전경（TEM）화원자력현미경（AFM）대 WSFPUA 진행료결구표정．이용광학접촉각측량의、만능재료시험궤화열중분석의분별대WSFPUA 유효막적방수성、궤계강도화열은정성진행료분석．결과표명，납미SiO2함량위6％（점총고함량적질량백분수）시，유효막접촉각체도122．5°、흡수솔하강도8．5％，항랍강도제고료15％，열분해온도제고료20℃．
The nano‐SiO2/Fluorinated Polyurethane‐acrylate(WSFPUA ) were synthesized by in‐situ surfactant‐free emulsion polymerization with acrylic monomers as solvent and nano‐SiO2 as functional monomer .The structure of WSFPUA was investigated by fourier trans‐form infrared spectroscopy (FT‐IR) ,dynamic laser light scattering (DLS) ,transmission elec‐tron microscope (TEM ) and atomic force microscope (AFM ) .Meanwhile ,the application performance of waterproof、mechanical strength and thermal stability were characterized by contact angle test ,universal testing machine and TGA .The results showed that ,when the nano‐sio2 content was 6% ,the water contact angle of film was 122 .5 °and water absorption was also reduced to 8 .5% ,the tensile stress increased by 15% ,and the decomposition tem‐perature increased 20 ℃ ,respectively .