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Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof

A technology of acrylic emulsion and epoxy monoacrylate, which is applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of non-recyclable, lack of surface phosphating treatment process, etc., and achieve the effect of improving anti-corrosion ability

Inactive Publication Date: 2013-02-13
武汉海源九天新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another object of the present invention is to provide a single-component water-based anti-rust paint for automobile leaf springs, which overcomes the problems of the current coating process of automobile leaf springs that cannot be reused and lacks surface phosphating treatment processes. question

Method used

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  • Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof
  • Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof
  • Single-component self-phosphatizing antirust acrylic emulsion, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Mix 400kg of epoxy resin E51 with 72kg of acrylic acid, add 0.36kg of hydroquinone, and carry out addition reaction at 98°C until the acid value is less than 5mgKOH / g, and then the epoxy monoacrylate is obtained.

[0049]

Embodiment 2

[0051] Mix 200kg of epoxy resin E51, 227kg of epoxy resin E44 with 43kg of methacrylic acid and 36kg of acrylic acid, add 0.39kg of p-methoxyphenol, and carry out addition reaction at 98°C until the acid value is less than 5mgKOH / g. Methyl methacrylate MMA 10kg, discharging, makes epoxy monoacrylate.

[0052]

Embodiment 3

[0054] Heat and dissolve 500kg of epoxy resin E20 in 100kg of ethylene glycol butyl ether, add 86kg of methacrylic acid and 0.43kg of p-methoxyphenol, and carry out addition reaction at 98°C until the acid value is less than 5mgKOH / g. Methyl methacrylate MMA 10kg, ethylene glycol butyl ether is distilled off under reduced pressure, and the remainder is epoxy monoacrylate.

[0055] serial number Viscosity (23°C) Example 1 15000mPa.s Example 2 1400mPa.s Example 3 1100mPa.s

[0056] The invention adopts the method of adding MMA to the product to reduce the viscosity, which can obviously reduce the viscosity of the epoxy monoacrylate, and is convenient for the operation of the reaction in the latter step.

[0057]

[0058] Two, the preparation embodiment of acrylic acid phosphate ester monomer

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Abstract

The invention discloses a single-component self-phosphatizing antirust acrylic emulsion, and a preparation method and application thereof. Self-made epoxy monoacrylate and acrylic phosphate used as monomers are subjected to radical copolymerization with acrylic acid monomer; and a seed emulsion semicontinuous method is utilized to obtain the emulsion. The emulsion used as a film forming material is matched with related pigment, filler and assistants to obtain water-based paint. When being used on the automobile leaf spring surface, the water-based paint can be cured at 80 DEG C within 20 minutes to form a film, of which the adhesive force is Grade 0, the hardness is 3H and the salt-fog resistance is 1000 hours. The method solves the problems of poor water resistance, salt-fog resistance, weather resistance and storage stability of the coated film of the existing antirust emulsion; and the method also solves the problems of incapability of recycling ground waste, and poor antirust capacity of unit coating thickness in the existing automobile leaf spring application process, and omits the procedure of phosphatizing on the substrate surface before application due to the introduction of the phosphate monomer.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a single-component self-phosphating anti-rust acrylic emulsion used in a suspension conveying coating production line for automobile leaf springs, a preparation method and application thereof. Background technique [0002] Over the years, the domestic automobile industry has not paid enough attention to the coating of leaf springs, and they will be rusted after a period of use. The test proves that if the early corrosion of the leaf spring is caused by the defects of the coating process and the poor corrosion resistance of the coating, the rust spots will become a new fatigue source of the leaf spring, which will affect the fatigue life of the leaf spring and reduce the safety of driving. and vehicle life. With the increasingly stringent restrictions on VOC content in coatings by environmental regulations in various countries, solvent-based coatings are gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F220/14C08F220/18C08F220/06C08F230/02C08F212/08C08F218/00C08F2/24C08G59/17C09D151/08C09D5/08
Inventor 刘胜波雷田张瑜张良均张欢谈伟成刘洋沈珍慧卢伟罗志龙
Owner 武汉海源九天新材料有限公司
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