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Anti-corrosion primer emulsion and preparation method thereof

An anti-corrosion primer and emulsion technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of poor anti-corrosion effect, many bubbles, and unenvironmental protection at the construction site, achieve good environmental protection and anti-corrosion performance, increase wet adhesion, and anti-corrosion. outstanding effect

Inactive Publication Date: 2011-08-31
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The anti-corrosion effect is not outstanding: the film thickness is 0.8 μm, and at 25 ° C, obvious corrosion occurs after soaking in 20% NaOH or 10% HCl for 5 minutes;
[0005] (2) The stability of the emulsion is not good, there are many condensates, and the viscosity will change with the prolongation of the storage time;
[0006] (3) The emulsion has a strong smell and more bubbles, and the construction site is not environmentally friendly

Method used

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  • Anti-corrosion primer emulsion and preparation method thereof
  • Anti-corrosion primer emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 preparation steps:

[0034] a. In a four-necked bottle equipped with a cooler, agitator, a thermometer and a dropping funnel, add the emulsifier components in Example 1 in sequence, stir and emulsify at 45°C for 30 minutes to prepare mixture A;

[0035] b. Weigh in sequence the components of the ethylenic monomer in Example 1 in the monomer-specific storage tank, stir and mix evenly, and make monomer mixture B;

[0036] C, weigh in the initiator component in the embodiment 1 in the initiator special storage tank, stir and mix uniformly, make mixture C;

[0037] d. Add 4% by weight of monomer mixture B to the reaction kettle in step a, and stir at 80°C for 15 minutes;

[0038] e. Add 20% by weight of mixture C to the reaction kettle in step a, and stir at 80° C. for 30 minutes to make a seed emulsion;

[0039] f. Add the remaining monomer mixture B and mixture C to the reaction kettle dropwise, wherein the mixture C is added dropwise 5 minutes later than t...

Embodiment 2

[0041] Embodiment 2 preparation steps:

[0042] a. Add each component of the emulsifier in Example 2 to a four-neck bottle equipped with a cooler, agitator, thermometer, and dropping funnel, and stir and emulsify at 65°C for 5 minutes to prepare mixture A;

[0043] b. Weigh in sequence the components of the ethylenic monomers in Example 2 in the dedicated storage tank for monomers, stir and mix evenly, and make monomer mixture B;

[0044] C, in the initiator special-purpose storage tank, weigh into the initiator 1 component in embodiment 2, stir and mix, make mixture C;

[0045] d. Add 5% by weight of monomer mixture B to the reaction kettle in step a, and stir at 82°C for 5 minutes;

[0046] e. Add 25% by weight of mixture C to the reaction kettle in step a, and stir at 82°C for 60 minutes to make a seed emulsion;

[0047] f. Add the remaining monomer mixture B and mixture C to the reactor simultaneously and continuously dropwise for 2 hours at 82°C, and keep warm at 88°C f...

Embodiment 3

[0049] Embodiment 3 preparation steps:

[0050] a. Add each component of the emulsifier in Example 3 to a four-neck bottle equipped with a cooler, agitator, thermometer, and dropping funnel, and stir and emulsify at 60°C for 10 minutes to prepare mixture A;

[0051] b. Weigh in turn the components of the ethylenic monomers in Example 3 in the dedicated storage tank for monomers, stir and mix evenly, and make monomer mixture B;

[0052] C, weigh in initiator 3 components in the special storage tank of initiator, stir and mix uniformly, make mixture C;

[0053] d. Add 6% by weight of monomer mixture B to the reaction kettle in step a, and stir at 85° C. for 20 minutes;

[0054] e. Add 30% by weight of mixture C to the reaction kettle in step a, and stir at 85° C. for 40 minutes to make a seed emulsion;

[0055] f. Add the remaining monomer mixture B and mixture C to the reactor simultaneously and continuously dropwise for 2 hours at 85°C, and keep warm at 90°C for 40 minutes a...

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Abstract

The invention discloses anti-corrosion primer emulsion for water-based high-corrosion-resistance air-conditioning aluminum foil paint and a preparation method thereof. The anti-corrosion primer emulsion comprises the following components in percentage by weight: 8 to 15 percent of styrene, 12 to 20 percent of butyl acrylate, 0 to 2.5 percent of methyl methacrylate, 6 to 8 percent of (methyl) ethyl acrylate, 0.3 to 0.7 percent of (methyl) acrylic acid, 0 to 1.2 percent of vinyl acetate, 1 to 8 percent of phosphate functional monomer, 1 to 5 percent of emulsifier, 0.1 to 0.5 percent of initiator, 0.6 to 1.0 percent of pH regulator and the balance of deionized water. In the preparation method of the acrylic acid emulsion, the phosphate functional monomer is added and a polymerizable composite emulsifier takes part in seeded emulsion polymerization, so that stability and corrosion resistance of the acrylic acid emulsion are improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning foil coating emulsion, in particular to an acrylic emulsion for water-based high-corrosion-resistant air-conditioning aluminum foil coating and a preparation method thereof. Background technique [0002] The aluminum foil itself forms a layer of dense aluminum oxide film in the air to protect the inner aluminum from corrosion, but when it is in a humid acid-base environment, the oxide film is prone to react and disappear, thus losing its protective effect, while the inner metal aluminum will be damaged. The rapid oxidation and electric corrosion produce "white powder", which seriously affects the working efficiency of the air-conditioning heat exchanger, shortens the service life of the air-conditioning aluminum foil, and breeds bacteria on it, producing peculiar smell and spreading germs. Aluminum for jobs requiring corrosion resistance or for use in wet-dry cycling conditions therefore ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F220/28C08F220/06C08F218/08C08F2/24C09D133/08C09D125/14C09D7/12C09D5/08
Inventor 徐方王芳
Owner SNTO TECH GRP
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