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Water-based quick-drying externally-crosslinked functional paint and preparation method thereof

A functional coating and cross-linking technology, applied in the direction of coating, etc., can solve the problems of slow drying speed, insufficient heat resistance and solvent resistance, poor hardness, etc., achieve fast curing speed, low content of volatile organic compounds, and low odor Effect

Active Publication Date: 2013-04-24
青岛中科煜成安全技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of too slow drying speed, poor hardness and insufficient heat resistance and solvent resistance in water-based coatings in the prior art, the present invention proposes a water-based fast-drying external linking functional coating and its preparation method

Method used

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  • Water-based quick-drying externally-crosslinked functional paint and preparation method thereof
  • Water-based quick-drying externally-crosslinked functional paint and preparation method thereof
  • Water-based quick-drying externally-crosslinked functional paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The composition of the water-based quick-drying externally linked functional coating is:

[0031]

[0032]

[0033] Add deionized water to 100%.

[0034] The composition of the elastic core-shell emulsion by mass percentage is:

[0035]

[0036] Add deionized water to 100%.

[0037] Preparation:

[0038] (1) Add unsaturated fatty acid, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate in the reactor equipped with thermometer, stirrer, reflux condenser and dropping funnel , styrene, (meth)acrylamide, deionized water and potassium sulfate to obtain pre-emulsions (including core and shell emulsions).

[0039] (2) Take 20% of the core pre-emulsion and add it to the reactor, and heat it to 80-85 ° C. After the emulsion turns blue and refluxes, start to drop the remaining pre-emulsion, and the dripping is completed in 2 to 3 hours, and the reaction is continued for more than 2 hours. , after the monomer conversion rate reached 99.9%, the temperatu...

Embodiment 2

[0042] The composition of the water-based quick-drying externally linked functional coating is:

[0043]

[0044]

[0045] Add deionized water to 100%.

[0046] The composition of the elastic core-shell emulsion by mass percentage is:

[0047]

[0048] Add deionized water to 100%.

[0049] Preparation:

[0050] (1) Add (meth)acrylic acid, itaconic acid monomer, butyl (meth)acrylate, ethyl (meth)acrylate to the reactor equipped with thermometer, stirrer, reflux condenser and dropping funnel , 2-ethylhexyl (meth)acrylate, dimethylstyrene, glycidyl (meth)acrylate, deionized water, and ammonium persulfate to obtain pre-emulsions (including core emulsions and shell emulsions).

[0051] (2) Take 15% of the nuclear pre-emulsion and add it to the reactor, and heat it to 80-85 ° C. After the emulsion turns blue and refluxes, start to drip the remaining pre-emulsion, and the dripping is completed in 2 to 3 hours, and the reaction is continued for more than 2 hours. After ma...

Embodiment 3

[0054] The composition of the water-based quick-drying externally linked functional coating is:

[0055]

[0056] Add deionized water to 100%.

[0057] The composition of the elastic core-shell emulsion by mass percentage is:

[0058]

[0059] Add deionized water to 100%.

[0060] Preparation:

[0061] (1) In the reactor equipped with thermometer, stirrer, reflux condenser and dropping funnel, add phthalic acid, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate Esters, dimethylstyrene, diacetone acrylamide, acrylonitrile, deionized water and ammonium persulfate, tert-butyl hydroperoxide gave pre-emulsions (including core and shell emulsions).

[0062](2) Take 20% of the nuclear pre-emulsion and add it to the reactor, heat it to 80-85°C, after the emulsion turns blue and refluxes, start adding the rest of the pre-emulsion dropwise, finish dripping in 2-3 hours, and continue to react for more than 2 hours , after the monomer conversion rate reached 99.9...

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Abstract

The invention relates to a water-based quick-drying externally-crosslinked functional paint and a preparation method thereof. The preparation method comprises the following steps: adding certain amounts of acid monomer, acrylate monomer, vinyl monomer, functional monomer and deionized water into the reaction kettle to obtain a pre-emulsion (comprising a core emulsion and a shell emulsion); adding part of pre-emulsion into the reaction kettle, and heating; when the emulsion becomes blue and produces reflux, starting dropwisely adding the rest of pre-emulsion, cooling to 50 DEG C, and dropwisely adding a pH regulator until the pH value of the system is 8 or so; and sequentially adding proper amounts of film-forming assistant, emulsifier and external crosslinking and curing agent, and adding a certain amount of corrosion inhibitor if necessary, thereby obtaining the water-based quick-drying externally-crosslinked functional paint. The paint provided by the invention has the advantages of low VOC (volatile organic compound) content, strong adhesive force, high hardness, favorable chemical resistance, energy saving and no air pollution.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, belongs to the field of chemical industry, and relates to a water-based quick-drying crosslinking functional coating and a preparation method thereof. Background technique [0002] The 21st century is a period of rapid economic development in China, and it is also a critical period when resources are scarce and environmental protection is facing huge challenges. Green and environmental protection are the main directions for the development of today's coatings industry. Traditional solvent-based coatings contain a large amount of toxic and harmful solvents, which will cause serious environmental pollution, endanger human health, and waste resources. The consumption of water-based coatings in my country in 2012 is expected to be more than 11 million tons, and the annual growth rate is 15%, but most of them are architectural latex paints. rare. However, from the current technical point ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D133/10C09D133/12C09D7/12
Inventor 孙道兴张峰王勇高祯瑞
Owner 青岛中科煜成安全技术有限公司
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