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A multi-functional coating based on acrylic copolymer modified with PDMS through copolymerization
Progress in Organic Coatings ( IF 6.5 ) Pub Date : 2021-04-02 , DOI: 10.1016/j.porgcoat.2021.106254
Sha Ji , Haoguan Gui , Guangwu Guan , Ming Zhou , Qipeng Guo , Mike Y.J. Tan

The chemical modification of acrylic copolymer was performed through copolymerization of vinyl-terminated polydimethylsiloxane (PDMS) and acrylic monomers by solution polymerization in order to synthesize acrylic-PDMS copolymers that could possess multi-functional properties required for application in harsh industrial environments. The synthesis of acrylic-PDMS copolymers was designed to possess combined advantages of the PDMS and acrylic copolymer. The acrylic-PDMS copolymers formed dispersion particles to be stable in water and the hydrophilic groups of the acrylic copolymer was distributed outside of the particles which is intended to stabilize the copolymer particles in water, and this could make it possible to prepare water-based coatings. The acrylic-PDMS showed more flexible copolymer chains, allowing the surface of acrylic-PDMS copolymer films to form with minimum defects, compared to the acrylic copolymer film, and with significantly decreased surface energy. The copolymer coatings exhibited high hydrophobicity with contact angles of the copolymer films increased to more than 90°. The high contact angle and low surface energy contributed to the low water absorption ratio and low dirt-pick performance of the copolymer films. The enhanced anti-corrosion performance of the copolymers was verified by electrochemical impedance spectra (EIS) and salt spray tests. The incorporation of PDMS segments in the acrylic-PDMS copolymers has been shown to be an effective approach to developing multi-functional coating with high chemical, corrosion and thermal resistances.



中文翻译:

基于PDMS改性的丙烯酸共聚物共聚的多功能涂料

丙烯酸共聚物的化学改性是通过溶液聚合使乙烯基封端的聚二甲基硅氧烷(PDMS)和丙烯酸单体共聚进行的,以合成丙烯酸酯-PDMS共聚物,该共聚物具有在恶劣的工业环境中应用所需的多功能特性。丙烯酸-PDMS共聚物的合成设计具有PDMS和丙烯酸共聚物的综合优势。丙烯酸-PDMS共聚物形成在水中稳定的分散颗粒,并且丙烯酸共聚物的亲水基团分布在颗粒外部,目的是使共聚物颗粒在水中稳定,这使得制备水性涂料成为可能。 。丙烯酸-PDMS显示出更灵活的共聚物链,与丙烯酸共聚物膜相比,允许丙烯酸-PDMS共聚物膜的表面形成的缺陷最少,并且表面能明显降低。随着共聚物膜的接触角增加到大于90°,​​共聚物涂层表现出高疏水性。高接触角和低表面能导致共聚物膜的低吸水率和低吸污性能。通过电化学阻抗谱(EIS)和盐雾测试验证了共聚物增强的抗腐蚀性能。在丙烯酸​​-PDMS共聚物中加入PDMS链段已被证明是开发具有高耐化学性,耐腐蚀性和耐热性的多功能涂料的有效方法。并显着降低了表面能。随着共聚物膜的接触角增加到大于90°,​​共聚物涂层表现出高疏水性。高接触角和低表面能导致共聚物膜的低吸水率和低吸污性能。通过电化学阻抗谱(EIS)和盐雾测试验证了共聚物增强的抗腐蚀性能。在丙烯酸​​-PDMS共聚物中加入PDMS链段已被证明是开发具有高耐化学性,耐腐蚀性和耐热性的多功能涂料的有效方法。并显着降低了表面能。随着共聚物膜的接触角增加到大于90°,​​共聚物涂层表现出高疏水性。高接触角和低表面能导致共聚物膜的低吸水率和低吸污性能。通过电化学阻抗谱(EIS)和盐雾测试验证了共聚物增强的抗腐蚀性能。在丙烯酸​​-PDMS共聚物中加入PDMS链段已被证明是开发具有高耐化学性,耐腐蚀性和耐热性的多功能涂料的有效方法。高接触角和低表面能导致共聚物膜的低吸水率和低吸污性能。通过电化学阻抗谱(EIS)和盐雾测试验证了共聚物增强的抗腐蚀性能。在丙烯酸​​-PDMS共聚物中加入PDMS链段已被证明是开发具有高耐化学性,耐腐蚀性和耐热性的多功能涂料的有效方法。高接触角和低表面能导致共聚物膜的低吸水率和低吸污性能。通过电化学阻抗谱(EIS)和盐雾测试验证了共聚物增强的抗腐蚀性能。在丙烯酸​​-PDMS共聚物中加入PDMS链段已被证明是开发具有高耐化学性,耐腐蚀性和耐热性的多功能涂料的有效方法。

更新日期:2021-04-02
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