溶剂挥发和相分离法制备环氧树脂基疏水涂层

TQ638; 以氟硅氧烷改性的环氧树脂为基体,采用二 甲苯/乙酸乙酯混合溶剂制备疏水涂层,研究氟硅氧烷含量、溶剂种类对涂层疏水性能和微观形貌的影响.结果表明:随着氟硅氧烷含量的增加,涂层的接触角逐渐变大;仅以二甲苯为溶剂时,制备的涂层表面较为光滑,最大接触角为105.0°;在二甲苯/乙酸乙酯混合溶剂体系中,由于溶剂挥发速率的差异,涂层表面形成了5～15 μm微孔;氟硅氧烷与环氧链段的相分离遵循成核-增长机制,微孔中产生尺寸为0.1～0.6 μm的突起,涂层成膜过程中氟和硅自发向外表面迁移以降低其表面能;当氟硅氧烷的质量分数增加到30％时,涂层表面微孔和孔内凸起可以截留更多的空气,涂层的最大接触...

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Published in华东理工大学学报（自然科学版） Vol. 48; no. 5; pp. 609 - 615
Main Authors 解国庆, 张衍, 刘育建, 方俊
Format Journal Article
LanguageChinese
Published 华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海 200237 2022
Subjects
环氧树脂
氟硅氧烷
疏水涂层
相分离
溶剂挥发
Online AccessGet full text
ISSN1006-3080
DOI10.14135/j.cnki.1006-3080.20210531001

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Abstract TQ638; 以氟硅氧烷改性的环氧树脂为基体,采用二 甲苯/乙酸乙酯混合溶剂制备疏水涂层,研究氟硅氧烷含量、溶剂种类对涂层疏水性能和微观形貌的影响.结果表明:随着氟硅氧烷含量的增加,涂层的接触角逐渐变大;仅以二甲苯为溶剂时,制备的涂层表面较为光滑,最大接触角为105.0°;在二甲苯/乙酸乙酯混合溶剂体系中,由于溶剂挥发速率的差异,涂层表面形成了5～15 μm微孔;氟硅氧烷与环氧链段的相分离遵循成核-增长机制,微孔中产生尺寸为0.1～0.6 μm的突起,涂层成膜过程中氟和硅自发向外表面迁移以降低其表面能;当氟硅氧烷的质量分数增加到30％时,涂层表面微孔和孔内凸起可以截留更多的空气,涂层的最大接触角提高到约115.5°,疏水性明显提高,并且涂层具有强附着力(5B)和高硬度(6H),表明其应用性能优良.
AbstractList TQ638; 以氟硅氧烷改性的环氧树脂为基体,采用二 甲苯/乙酸乙酯混合溶剂制备疏水涂层,研究氟硅氧烷含量、溶剂种类对涂层疏水性能和微观形貌的影响.结果表明:随着氟硅氧烷含量的增加,涂层的接触角逐渐变大;仅以二甲苯为溶剂时,制备的涂层表面较为光滑,最大接触角为105.0°;在二甲苯/乙酸乙酯混合溶剂体系中,由于溶剂挥发速率的差异,涂层表面形成了5～15 μm微孔;氟硅氧烷与环氧链段的相分离遵循成核-增长机制,微孔中产生尺寸为0.1～0.6 μm的突起,涂层成膜过程中氟和硅自发向外表面迁移以降低其表面能;当氟硅氧烷的质量分数增加到30％时,涂层表面微孔和孔内凸起可以截留更多的空气,涂层的最大接触角提高到约115.5°,疏水性明显提高,并且涂层具有强附着力(5B)和高硬度(6H),表明其应用性能优良.
Author 张衍
刘育建
解国庆
方俊
AuthorAffiliation 华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海 200237
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XIE Guoqing
LIU Yujian
FANG Jun
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Keywords 环氧树脂
氟硅氧烷
疏水涂层
相分离
溶剂挥发
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Title 溶剂挥发和相分离法制备环氧树脂基疏水涂层
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