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环氧树脂是平均每个分子含有两个或两个以上环氧基的热固性树脂。环氧树脂涂料的主要成分是环氧树脂及其固化剂,辅助成分有颜料、填料等。由于环氧树脂具有易加工成型、固化物性能优异...
环氧树脂是平均每个分子含有两个或两个以上环氧基的热固性树脂。环氧树脂涂料的主要成分是环氧树脂及其固化剂,辅助成分有颜料、填料等。由于环氧树脂具有易加工成型、固化物性能优异等特点,在金属防腐中被广泛应用,通过环氧结构和膨胀单体改性、环氧合金化、填充无机填料等改造后可以制成防腐涂料。环氧树脂涂料具有优良的物理机械性能,具有较强的金属附着力,也具有较好的耐化学药品性和耐油性,尤其是极强的耐碱性。
由于环氧树脂分子结构中含有极性高的羟基和醚键,故涂膜的耐化学性好,耐碱性好,耐热碱性介质更好。又因其结构含有刚性和苯环和头型的烃链交替排列,故涂膜的物理机械性能也相当好。由于极性基团的存在,使涂膜会有一定的亲水性,如果配方选择得当,也能得到耐水性良好的涂膜。环氧树脂防腐蚀涂料的品种很多,应用最广泛的是胺类或其衍生物固化环氧涂料和沥青环氧防腐涂料。近年来无溶剂环氧树脂防腐蚀涂料已有应用,水乳型环氧树脂防腐蚀涂料是很有发展前途。
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由于环氧树脂分子结构中含有极性高的羟基和醚键,故涂膜的耐化学性好,耐碱性好,耐热碱性介质更好。又因其结构含有刚性和苯环和头型的烃链交替排列,故涂膜的物理机械性能也相当好。由于极性基团的存在,使涂膜会有一定的亲水性,如果配方选择得当,也能得到耐水性良好的涂膜。环氧树脂防腐蚀涂料的品种很多,应用最广泛的是胺类或其衍生物固化环氧涂料和沥青环氧防腐涂料。近年来无溶剂环氧树脂防腐蚀涂料已有应用,水乳型环氧树脂防腐蚀涂料是很有发展前途。
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Epoxy resin is the average molecule contains two or more than two epoxy group of thermosetting resins.The main composition of epoxy resin coatings is epoxy resin and curing agent, auxiliary components such as pigment and filler.Because the epoxy resin has easy processing and forming, curing performance and other characteristics, widely used in metal anti-corrosion, structure and expansion monomer, epoxy modified by epoxy alloying, filled with inorganic modified can be made into anticorrosive coatings.Epoxy resin coating with excellent physical and mechanical properties, strong metal adhesion, also has good chemical resistance and oil resistance, especially the strong alkali resistance.
Due to epoxy resin molecular structure contains polar high hydroxyl and ether bond, good chemical resistance of the coating, good alkali resistance, heat alkaline medium is better.And because of its structure with rigid and benzene ring and head type of hydrocarbon chains arranged alternately, so the physical and mechanical properties of the coating is also quite good.Due to the presence of polar groups can have certain hydrophilic coating, if properly selected, the formula can get good coating resistance to water.Epoxy resin is a wide variety of anti-corrosion coatings, is the most widely used amine or its derivatives curing epoxy coating and epoxy asphalt anticorrosive coating.Solventless epoxy anticorrosive coatings in recent years have been applied, the other type epoxy anticorrosive coatings is very promising.
Due to epoxy resin molecular structure contains polar high hydroxyl and ether bond, good chemical resistance of the coating, good alkali resistance, heat alkaline medium is better.And because of its structure with rigid and benzene ring and head type of hydrocarbon chains arranged alternately, so the physical and mechanical properties of the coating is also quite good.Due to the presence of polar groups can have certain hydrophilic coating, if properly selected, the formula can get good coating resistance to water.Epoxy resin is a wide variety of anti-corrosion coatings, is the most widely used amine or its derivatives curing epoxy coating and epoxy asphalt anticorrosive coating.Solventless epoxy anticorrosive coatings in recent years have been applied, the other type epoxy anticorrosive coatings is very promising.
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