Thermosetting acrylic resin for electrogilding oil and preparation method thereof

Abstract

The invention relates to a preparation method of thermosetting acrylic resin for electrogilding oil. The preparation method comprises the following steps of: 1) preparing 10 to 30 weight percent of unsaturated polyester intermediate, 5 to 20 weight percent of carboxyl-containing acrylic acid monomer, 2 to 10 weight percent of hydroxyl-containing acrylic acid monomer, 12 to 25 weight percent of styrene monomer, 10 to 30 weight percent of other acrylic acid monomers, 1.5 to 4.5 weight percent of initiator and 30 to 45 weight percent of solvent which serve as raw materials; 2) putting the total formula amount of unsaturated polyester intermediate and partial formula amount of solvent and initiator into a reaction kettle, uniformly stirring, introducing N2, and heating with stirring for temperature rise until refluxing is realized; and 3) dripping the total formula amount of monomer and partial formula amount of initiator and solvent at the refluxing temperature of between 135 and 150 DEGC to form a mixture, preserving the heat at the refluxing temperature of between 135 and 150 DEG C for 2 to 4 hours, replenishing the residual initiator and solvent to form the mixture, preserving the heat for 4 to 6 hours, cooling and stopping the reaction. The thermosetting acrylic resin is applied to the electrogilding oil, has high adhesion performance, high glossiness, high rigidity and highsalt fog resistance, and particularly has high low-temperature bridging performance and high dissolubility when mixed with other resins.

Description

technical field [0001] The invention relates to the technical field of acrylic coatings, in particular to a thermosetting acrylic resin for electroplating gold oil and a preparation method thereof. Background technique [0002] Electroplating gold oil is a coating for surface decoration and protection of objects, and its application is very diverse. It is widely used in various aspects of people's daily life, such as mobile phones, buttons, door locks, spectacle frames, watches, lighting, metal processing and other fields . With the improvement of people's living standards, not only the physical and chemical properties of the paint film on the surface of these products are required to be good, that is: excellent adhesion to the substrate, high hardness, excellent solvent resistance, abrasion resistance, salt spray resistance, water resistance Cookability, weather resistance, etc.; also requires excellent film appearance, that is: high gloss, high vividness, high fullness, e...

AI Technical Summary

Problems solved by technology

However, the electroplating oils currently on the market generally have defects such as low hardness, poor alcohol resistance, and low adhesion; in addition, the diversified applications of electroplating oils often require the combination of two or more resins to meet performance requirements, so Requirements for the compatibility of the resin are relatively high. The current resins for electroplating oil on the market often have problems of miscibility and poor comprehensive performance, which narrows the application area of ​​electroplating gold oil and limits its application range.

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