摘要
分析了一种新型水性PVDF氟碳树脂乳液(FCF-301)的粒径、SEM、红外及核磁氢谱特征,分析表明氟碳乳液为核壳型。为进一步提升其应用性能,采用双组分水性丙烯酸树脂对核壳型水性PVDF进行复合改性。其中,树脂的共混相容性是复合改性的关键要素。通过SEM、FT-IR、DSC对溶液铸膜法制备的共混薄膜表征结果对比可知:聚氨酯固化丙烯酸树脂A2470与水性PVDF树脂FCF-301共混呈部分相容:其海岛结构相分离现象少,且相界面模糊;与碳氟键相关的红外吸收峰有一定程度迁移;共混薄膜材料中水性PVDF树脂FCF-301熔点向低温方向迁移-5℃,为备选双组分共混相容体系中最优。
A new type of waterborne poly(vinylidene fluoride) (PVDF) emulsion is stud- ied by means of laser particle size analyzer, SEM, FT-IR and 1H NMR. It is verified that the waterborne PVDF emulsion has a core-shell structure. In order to enhance its application per- formance, a two-component waterborne acrylic resin is one of the most promising materials for core-shell structure waterborne PVDF modification. However, the miscibility of the blend is the key influential factor on it. The results show that the polyurethane cured A2470 acrylic res- in is partially compatible with the waterborne PVDF as observed by SEM, FT-IR and DSC. The interface of the "sea-island" phase is blurred and fewer; FT-IR peaks associated with the C-F bond are shifted to a certain extent, and the melting point of waterborne PVDF resin in blends moves 5℃ towards the low temperature direction, which is the best in blends of pol- yurethane cured acrylic resin and waterborne poly( vinylidene fluoride).
作者
雷远志
万俊亮
李会宁
姚芳
韩磊
曹德榕
Lei Yuanzhi1 , Wan Junliang1, Li Huining2, Yao Fang2, Hang Lei1 ,Cao Derong1(1. College of Chemistry and Chemical Engineering, South China University of Technology,Guangzhou 510641, China; 2. Zhaoqing Rivers New Material Technology Co., Ltd., Zhaoqing, Guangdong 526238, Chin)
出处
《涂料工业》
CAS
CSCD
北大核心
2018年第4期20-25,共6页
Paint & Coatings Industry
关键词
相容
水性PVDF
丙烯酸树脂
氟碳树脂
miscibility
waterborne poly ( vinylidene fluoride )
acrylic resin
fluorocarbon resin