工艺技术

水性含氟杂化丙烯酸树脂分散体的制备与性能研究

  • 袁东明 ,
  • 李玉 ,
  • 程佳男 ,
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  • 1. 郑州中科新兴产业技术研究院,郑州450000;

    2. 龙子湖新能源实验室,郑州450000

袁东明(1991—),男,硕士,工程师,主要从事水性丙烯酸树脂、水性环氧树脂和水性工业涂料的制备与性能研究。

网络出版日期: 2025-02-01

Preparation and Properties of Waterborne Fluorinated Hybrid Acrylic Resin Dispersion

  • YUAN D M ,
  • LI Y ,
  • CHENG J N ,
  • et al
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  • 1. Zhengzhou Institute of Emerging Industrial Technology,Zhengzhou 450000,China;

    2. Longzihu New Energy Laboratory,Zhengzhou 450000,China

Online published: 2025-02-01

摘要

将不饱和脂肪酸、丙烯酸与环氧树脂酯化合成环氧酯预聚体,通过半连续自由基聚合工艺,将环氧酯预聚体、甲基丙烯酸十二氟庚酯( DFMA)及乙烯基单体共聚,合成水性含氟杂化丙烯酸树脂。采用红外光谱仪( FT-IR)、能谱仪( EDS)、热重分析仪( TGA)、差式扫描量热仪( DSC)、凝胶渗透色谱仪( GPC)、接触角测量仪及激光粒度仪等对分散体和胶膜进行表征。系统研究了酯化温度、环氧酯用量、 DFMA及引发剂用量对树脂性能的影响,探究了树脂交联固化机理。结果表明: DFMA可与乙烯基单体共聚生成含氟丙烯酸树脂;当 DFMA单体用量为 9%时,树脂分散体粒径小于 125 nm,且分布均匀,贮存稳定性良好,胶膜的水接触角达到 96. 5 °,附着力 0级,热失质量 10%的温度超过 336 ℃;同时胶膜耐水性、耐酸性和耐碱性得到显著提高,有效改善了常规水性丙烯酸树脂分散体的综合性能。

本文引用格式

袁东明 , 李玉 , 程佳男 , . 水性含氟杂化丙烯酸树脂分散体的制备与性能研究[J]. 涂料工业, 2025 , 55(2) : 19 -25 . DOI: 10.12020/j.issn.0253-4312.2024-275

Abstract

Epoxy ester prepolymer was synthesized by esterification of unsaturated fatty acids,acrylic acid and epoxy resin,and copolymerized with dodecafluoroheptyl methacrylate(DFMA)and vinyl monomer by semi-continuous radical polymerization process to synthesizeaqueous fluorinated hybrid acrylic resin dispersion. The dispersion and film were characterized byFourier infrared spectrometer(FT-IR),energy dispersive spectrometer(EDS),thermogravimetry(TGA)differential scanning calorimeter(DSC)gel permeation chromatograph(GPC)contact anglemet,erandlaserparticlesizeanalyzer.The,effects of esterification temperature,e,poxyester dosage DFMA and initiator dosage on resin properties were systematically studied,and the cross-linking curing mechanism was further explored. The results showed that DFMA could copolymerize with vinyl monomer to form fluorinated acrylic resin. When the DFMAmonomer dosage was 9%,the particle size of the resin dispersion was less than 125 nm, showing uniform distribution and good storage stability. The water contact angle reached 96. 5 °,the adhesion was level 0,and the 10% thermal weight loss temperature exceeded 336 ℃ . At the same time,water resistance,acid resistance and alkali resistance of the film were significantly improved, effectively enhancing the comprehensive properties of conventional water-borne acrylic resin dispersion.
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