Waterborne rusty coating for protecting coating of steel-structure work pieces and preparation method thereof
A technology for rusty coatings and steel structures, applied in the direction of anti-corrosion coatings, coatings, etc., can solve problems such as large environmental pollution, high energy consumption, and unsafety, and achieve the effects of environmental friendliness, good leveling, and low price
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Embodiment 1
[0024] The water-based rust-bearing paint used for coating protection of steel structure workpieces, its raw materials are composed of the following weight ratio:
[0025]
[0026] Among them, the cross-linked styrene-acrylic emulsion adopts commercial grade (solid content is 44%), the conversion agent is selected oxalic acid, the anti-rust pigment is aluminum dihydrogen tripolyphosphate, the film-forming aid is ethylene glycol ether, and the thickener is commercially available. Sales grade.
[0027] The preparation steps are as follows:
[0028] ①. Mix the anti-rust pigment with 80g of water and grind to disperse to a fineness of 20 microns.
[0029] ② Add cross-linked styrene-acrylic emulsion, conversion agent, quinone, tributyl phosphate, film-forming aid, thickener and the rest of water, stir evenly, and pack to obtain the coating protection for steel structure workpieces Water-based rust paint.
Embodiment 2
[0031] The water-based rust-bearing paint used for coating protection of steel structure workpieces, its raw materials are composed of the following weight ratio:
[0032]
[0033]
[0034] Among them, salicylic acid is selected as the conversion agent, zinc yellow is used as the anti-rust pigment, ethylene glycol propyl ether is used as the film-forming aid, and commercially available grade is used as the thickener.
[0035] The preparation steps are as follows:
[0036] ①. Preparation of cross-linked styrene-acrylic emulsion
[0037] With 50g butyl acrylate as soft monomer, 42g styrene as hard monomer, 3g N-methylol acrylamide, 3g acrylic acid as modified component, 2.4g OP-10 as emulsifier, ammonium persulfate as initiator , prepared by semi-continuous emulsion polymerization, the polymerization temperature is 78°C, the polymerization time is 2.5 hours, and the solid content of the obtained cross-linked styrene-acrylic emulsion is 45%.
[0038] ②. Mix the anti-rust ...
Embodiment 3
[0041] The water-based rust-bearing paint used for coating protection of steel structure workpieces, its raw materials are composed of the following weight ratio:
[0042]
[0043]
[0044] Among them, the conversion agent is oxalic acid, the antirust pigment is iron red, the film-forming aid is ethylene glycol ether, and the thickener is commercial grade.
[0045] The preparation steps are as follows:
[0046] ①. Preparation of cross-linked styrene-acrylic emulsion
[0047] With 540g butyl acrylate as soft monomer, 440g styrene as hard monomer, 33g N-methylol acrylamide, 40g acrylic acid as modified component, 23g OP-10 as emulsifier, ammonium persulfate as initiator, It is prepared by semi-continuous emulsion polymerization, the polymerization temperature is 80°C, and the polymerization time is 3 hours. The solid content of the obtained cross-linked styrene-acrylic emulsion is 46%.
[0048] ②. Mix the anti-rust pigment with 120g of water and grind to disperse to a fi...
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