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A technology of water-based epoxy resin and weather-resistant coatings, which is applied in the direction of epoxy resin coatings, reflective/signal coatings, anti-corrosion coatings, etc. It can solve the problems of poor compatibility of high polymers, reduce agglomeration, increase sedimentation rate, and improve insulation. The effect of thermal performance
Inactive Publication Date: 2020-01-17
萧县金虹新型防水建材有限公司
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Problems solved by technology
[0007] The difference in properties between the interface with the polymer makes it poorly compatible with the polymer, and it is difficult to
Method used
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Embodiment 1
[0038] A preparation method of water-based epoxy resin-based asphalt heat-reflecting heat-insulating and weather-resistant coating, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:
[0039] (1) Surface dry modification process of sericite powder:
[0040] Put 13.5 parts of sericite powder in a drying oven at 120-130°C to dry for 1 hour, grind and disperse after cooling, control the modification temperature at 90-110°C, add 0.14 parts of silane coupling agent KH570 dropwise, grind for 10 minutes, then add 0.68 Parts of liquid paraffin carry out modification reaction 60min, obtain dry process modified sericite powder;
[0041] (2) Inorganic coating method on the surface of rutile titanium dioxide:
[0042] Make 7 parts of rutile titanium dioxide into a slurry, add 0.02 parts of dispersant sodium hexametaphosphonate to it, ultrasonically disperse for 30 minutes, control the reaction temperature at 65-70°C,...
Embodiment 2
[0052] A preparation method of water-based epoxy resin-based asphalt heat-reflecting heat-insulating and weather-resistant coating, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:
[0053] (1) Surface dry modification process of sericite powder:
[0054] Put 22.5 parts of sericite powder in a drying oven at 120-130°C to dry for 2 hours, grind and disperse after cooling, control the modification temperature at 90-110°C, add 0.45 parts of silane coupling agent KH570 dropwise, grind for 20 minutes, and then add 1.35 parts dropwise Parts of liquid paraffin carry out modification reaction 80min, obtain dry process modified sericite powder;
[0055] (2) Inorganic coating method on the surface of rutile titanium dioxide:
[0056] Make 9 parts of rutile titanium dioxide into a slurry, add 0.03 parts of dispersant sodium hexametaphosphonate to it, ultrasonically disperse for 40 minutes, control the reaction tem...
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Abstract
The invention discloses a preparation method of a waterborne epoxy resin-based asphalt heat-reflection heat-insulation weather-proof coating. The preparation method comprises the following steps: adding water, a substrate wetting agent, a defoaming agent, an anti-flash-rust agent and a coalescing agent into a paint mixing tank and carrying out dispersing; adding waterborne bisphenol A epoxy resinand performing dispersing; adding a pH regulator to regulate a pH value and carrying out dispersing; adding anionic emulsified asphalt and carrying out dispersing; adding an inorganic bentonite thickener to regulate viscosity; and carrying out dispersing to obtain a component A of the coating; adding water, a defoaming agent, a dispersing agent and an anti-settling agent into another paint mixingtank and carrying out dispersing; adding dry-process modified sericite powder and zinc phosphate, and carrying out sanding and dispersing; adding a waterborne modified amine curing agent and carryingout dispersing to obtain a component B; and mixing inorganically coated rutile titanium dioxide, precipitated phase silicon dioxide, hollow microspheres, a dispersing agent, a waterborne epoxy curingagent and a waterborne epoxy emulsion, carrying out grinding and dispersing, and mixing the formed mixture with the component A of the coating, the component B and chemically surface-modified shell powder to obtain the waterborne coating.
Description
technical field [0001] The invention belongs to the field of water-based coatings, and in particular relates to a preparation method of water-based epoxy resin-based asphalt heat-reflecting heat-insulating and weather-resistant coatings. Background technique [0002] Sericite is an emerging non-metallic mineral filler, widely used in coatings, plastics, rubber, glue [0003] Adhesive, paper and other industrial fields. Epoxy coatings are the most commonly used method of corrosion protection of metal surfaces in industry. [0004] Law. When sericite powder is added to epoxy paint as filler, it can partially replace zinc powder, titanium dioxide, etc. [0005] Low production cost; the unique flaky structure and physical and chemical properties of sericite can improve the coating performance to varying degrees. [0006] Acid resistance, alkali resistance, wear resistance, heat resistance and other properties. Since sericite is a hydrophilic non-metallic mineral filler, ...
Claims
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Application Information
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