阅读说明：本技术 一种耐腐蚀高分子纳米亲水涂料及其制备方法 (Corrosion-resistant high-molecular nano hydrophilic coating and preparation method thereof ) 是由 褚俊华 于 2020-08-03 设计创作，主要内容包括：本发明公开了一种耐腐蚀高分子纳米亲水涂料及其制备方法,包括以下各组份按重量份制备而成：二氧化硅10-30份、草酸溶液5-15份、蒸馏水20-40份、丙烯酸树脂乳液10-30份、甲醚化三聚氰胺5-15份、流平剂5-10份、润湿剂2-10份、消泡剂5-10份、环氧树脂10-20份、硅烷偶联剂5-15份、防锈剂5-10份、三乙胺10-20份、引发剂5-10份和乙醇10-20份,与其它耐腐蚀高分子纳米亲水涂料相比,本发明中对二氧化硅进行改性获得了分散性较好的二氧化硅,使得涂料涂覆时,涂料层内的二氧化硅分散均匀,并且改性后的二氧化硅、特制的丙烯酸树脂乳液与环氧树脂混合使得涂料涂覆有拥有高硬度、高耐酸耐碱性、高耐污性和高耐盐雾性能,提升了涂料的保护性和耐腐蚀性,能够更好在物体表面起到良好的保护功能。(The invention discloses a corrosion-resistant polymer nano hydrophilic coating and a preparation method thereof, wherein the corrosion-resistant polymer nano hydrophilic coating is prepared from the following components in parts by weight: 10-30 parts of silicon dioxide, 5-15 parts of oxalic acid solution, 20-40 parts of distilled water, 10-30 parts of acrylic resin emulsion, 5-15 parts of methylated melamine, 5-10 parts of flatting agent, 2-10 parts of wetting agent, 5-10 parts of defoaming agent, 10-20 parts of epoxy resin, 5-15 parts of silane coupling agent, 5-10 parts of antirust agent, 10-20 parts of triethylamine, 5-10 parts of initiator and 10-20 parts of ethanol The paint has high acid and alkali resistance, high stain resistance and high salt spray resistance, improves the protection and corrosion resistance of the paint, and can better play a good protection role on the surface of an object.)

1. A corrosion-resistant polymer nano hydrophilic coating and a preparation method thereof are characterized in that: the paint is prepared from the following components in parts by weight: 10-30 parts of silicon dioxide, 5-15 parts of oxalic acid solution, 20-40 parts of distilled water, 10-30 parts of acrylic resin emulsion, 5-15 parts of methylated melamine, 5-10 parts of flatting agent, 2-10 parts of wetting agent, 5-10 parts of defoaming agent, 10-20 parts of epoxy resin, 5-15 parts of silane coupling agent, 5-10 parts of antirust agent, 10-20 parts of triethylamine, 5-10 parts of initiator and 10-20 parts of ethanol, and the method comprises the following steps:

s1, selecting raw materials: selecting 10 parts of silicon dioxide, 5 parts of oxalic acid solution, 20 parts of distilled water, 10 parts of acrylic resin emulsion, 5 parts of methylated melamine, 5 parts of flatting agent, 2 parts of wetting agent, 5 parts of defoaming agent, 10 parts of epoxy resin, 5 parts of silane coupling agent, 5 parts of antirust agent, 10 parts of triethylamine, 5 parts of initiator and 10 parts of ethanol;

s2, blending raw materials: putting 10 parts of acrylic resin emulsion and 5 parts of initiator into a reaction kettle, heating the reaction kettle to 50 ℃ and stirring for 45min at the rotating speed of 800r/min, then putting 10 parts of triethylamine into the reaction kettle and continuously stirring, then lowering the temperature in the reaction kettle to 40 ℃ and stopping stirring for heat preservation, putting 5 parts of oxalic acid solution and 20 parts of distilled water into the stirring kettle, stirring for 15min at the rotating speed of 500r/min, then putting 10 parts of ethanol, 10 parts of silicon dioxide and 5 parts of silane coupling agent into the stirring kettle and stirring for 10min at the rotating speed of 1000r/min, then introducing suspension formed in the stirring kettle into the reaction kettle through a pipeline, starting the stirring and heating functions of the reaction kettle, heating to 50 ℃ and stirring for 3h at the rotating speed of 1500r/min, and then sequentially putting 5 parts of methylated melamine, 5 parts of flatting agent, 2 parts of wetting agent, 5 parts of defoaming agent, and the like, 10 parts of epoxy resin and 5 parts of antirust agent, heating the reaction kettle to 60 ℃, stirring at a rotating speed of 1600r/min for 1h, and closing the heating and stirring functions of the reaction kettle after the stirring of the reaction kettle is finished so as to naturally cool the reaction kettle;

s3, preparing the coating: introducing the solution in the reaction kettle into a high-speed dispersion machine through a pipeline for dispersing for 15min, pouring the dispersed raw materials into a ball mill for ball milling for 4.5h to obtain a coating;

s4, paint storage: and (5) putting the paint ball-milled by the ball mill into a paint bucket, and sealing and storing.

2. The corrosion-resistant polymer nano hydrophilic coating and the preparation method thereof according to claim 1, characterized in that: the silicon dioxide raw material is nano silicon dioxide.

3. The corrosion-resistant polymer nano hydrophilic coating and the preparation method thereof according to claim 1, characterized in that: the acrylic resin emulsion is water-based acrylic resin emulsion.

4. The corrosion-resistant polymer nano hydrophilic coating and the preparation method thereof according to claim 1, characterized in that: the pH value of the solution after the oxalic acid solution is mixed with distilled water is 3-4.5.

Technical Field

The invention relates to a corrosion-resistant high-molecular nano hydrophilic coating, in particular to a corrosion-resistant high-molecular nano hydrophilic coating and a preparation method thereof.

Background

The nano hydrophilic coating is developed by the joint cooperation of the combined fertilizer and flying chemistry science and technology limited company and the universities such as the university of Chinese science and technology, the combined fertilizer industry university and the like, and the technology of the nano hydrophilic film, the preparation process of the hydrophilic nano coating with low cost and high quality and the coating technology are obtained. According to the process technology, the manufactured nano hydrophilic coating is a composite nano coating containing a plurality of nano components, has a plurality of nano effects, and contains nano substances with primary particle size of 7-80 nm and specific surface area generally larger than 100m 2/g. The material has excellent properties, so the material is widely applied to the industrial fields of rubber, plastics, steel, automobiles, solar energy and the like.

The nano-silica in the macromolecular nano-hydrophilic coating prepared by the conventional formula is unevenly dispersed, the protection capability of the coating is affected by the uneven silica in the coating layer after the coating is coated, and meanwhile, the macromolecular nano-hydrophilic coating prepared by the conventional formula has low surface hardness, poor acid and alkali resistance, high stain resistance and high salt mist resistance, and cannot well protect objects below the coating layer.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a corrosion-resistant high-molecular nano hydrophilic coating and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: the corrosion-resistant high-molecular nano hydrophilic coating and the preparation method thereof comprise the following components in parts by weight: 10-30 parts of silicon dioxide, 5-15 parts of oxalic acid solution, 20-40 parts of distilled water, 10-30 parts of acrylic resin emulsion, 5-15 parts of methylated melamine, 5-10 parts of flatting agent, 2-10 parts of wetting agent, 5-10 parts of defoaming agent, 10-20 parts of epoxy resin, 5-15 parts of silane coupling agent, 5-10 parts of antirust agent, 10-20 parts of triethylamine, 5-10 parts of initiator and 10-20 parts of ethanol, and the method comprises the following steps:

s1, selecting raw materials: selecting 10 parts of silicon dioxide, 5 parts of oxalic acid solution, 20 parts of distilled water, 10 parts of acrylic resin emulsion, 5 parts of methylated melamine, 5 parts of flatting agent, 2 parts of wetting agent, 5 parts of defoaming agent, 10 parts of epoxy resin, 5 parts of silane coupling agent, 5 parts of antirust agent, 10 parts of triethylamine, 5 parts of initiator and 10 parts of ethanol;

s2, blending raw materials: putting 10 parts of acrylic resin emulsion and 5 parts of initiator into a reaction kettle, heating the reaction kettle to 50 ℃ and stirring for 45min at the rotating speed of 800r/min, then putting 10 parts of triethylamine into the reaction kettle and continuously stirring, then lowering the temperature in the reaction kettle to 40 ℃ and stopping stirring for heat preservation, putting 5 parts of oxalic acid solution and 20 parts of distilled water into the stirring kettle, stirring for 15min at the rotating speed of 500r/min, then putting 10 parts of ethanol, 10 parts of silicon dioxide and 5 parts of silane coupling agent into the stirring kettle and stirring for 10min at the rotating speed of 1000r/min, then introducing suspension formed in the stirring kettle into the reaction kettle through a pipeline, starting the stirring and heating functions of the reaction kettle, heating to 50 ℃ and stirring for 3h at the rotating speed of 1500r/min, and then sequentially putting 5 parts of methylated melamine, 5 parts of flatting agent, 2 parts of wetting agent, 5 parts of defoaming agent, 5 parts of methyl-etherified melamine, 10 parts of epoxy resin and 5 parts of antirust agent, heating the reaction kettle to 60 ℃, stirring at a rotating speed of 1600r/min for 1h, and closing the heating and stirring functions of the reaction kettle after the stirring of the reaction kettle is finished so as to naturally cool the reaction kettle;

s3, preparing the coating: introducing the solution in the reaction kettle into a high-speed dispersion machine through a pipeline for dispersing for 15min, pouring the dispersed raw materials into a ball mill for ball milling for 4.5h to obtain a coating;

s4, paint storage: and (5) putting the paint ball-milled by the ball mill into a paint bucket, and sealing and storing.

Preferably, the silica raw material is nano silica.

Preferably, the acrylic resin emulsion is a water-based acrylic resin emulsion.

Preferably, the pH value of the solution after the oxalic acid solution is mixed with distilled water is 3-4.5.

The invention has the technical effects and advantages that:

the process is mature, the silicon dioxide is modified to obtain the silicon dioxide with better dispersibility, so that the silicon dioxide in a coating layer is uniformly dispersed when the coating is coated, and the modified silicon dioxide, the specially-made acrylic resin emulsion and the epoxy resin are mixed to ensure that the coating has high hardness, high acid and alkali resistance, high pollution resistance and high salt spray resistance, the protection property and the corrosion resistance of the coating are improved, and the coating can better play a good protection function on the surface of an object.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.