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Monocomponent self-cross-linking epoxy acrylic acid composite emulsion , its preparation method and uses

A technology of epoxy acrylic acid and composite emulsion, applied in the field of composite polymer materials, can solve the problems of high VOC content, high temperature curing, low emulsion solid content, etc., and achieve the effects of fast drying rate, good water resistance and low cost

Active Publication Date: 2006-02-08
广东鸿昌化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two types of chemical grafting methods require the use of a large amount of organic solvents in the preparation process, and the prepared emulsion has low solid content and high VOC content, and high temperature curing is required during the drying process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] To a mixture of 34g methyl methacrylate (MMA), 32g butyl acrylate (BA), 2g acrylic acid, 10g styrene (ST), add 0.8g sodium dodecyl sulfate (SDS), 1.6g octane In a mixed aqueous solution composed of phenol polyoxyethylene ether (OP-10) and 30 g of water, the mixed monomer pre-emulsion was prepared by magnetic stirring for 30 minutes.

[0040] In a four-neck flask equipped with a thermometer, a stirring device and a condenser, add 50g of water, 1.1g of vinyl alkylphenol polyoxyethylene sulfonate (DNS6), 1.4g of octanylphenol polyoxyethylene ether (OP- 10), and 0.2g sodium bicarbonate, stir vigorously and heat up to 78°C, add 10g bisphenol A epoxy resin (epoxy value 0.32mol / 100g), 5g styrene, 2gγ-methacryloyloxy Propyltriisopropoxysilane (C-1757), after stirring for 20 minutes, add 0.12g of potassium persulfate (KPS), wait for the system to react until the emulsion shows a clear blue light, that is, the core layer of the composite emulsion is obtained, and then the core la...

Embodiment 2～5

[0042] The operating steps and reaction conditions are the same as those in Example 1, and the proportions of the components are shown in Table 1, and the properties of the obtained epoxy acrylic emulsion are shown in Table 2.

[0043] project name

[0044] performance

Embodiment 6

[0046] White water-based paint: Disperse 0.15 parts of wetting agent, 0.35 parts of dispersing agent, 0.45 parts of polyurethane thickener, 0.25 parts of cellulose (2.5%), 0.36 parts of defoamer, and 3 parts of propylene glycol in water, and then add 25 parts in sequence Titanium dioxide, 8 parts of kaolin (3000 mesh), under 3000rpm in the disperser, after high-speed dispersion to a fineness of less than 60 μm, reduce the stirring speed to 800rpm, add 26 parts of epoxy acrylic compound emulsion (embodiment 1), 0.05 part Defoamer and 0.3 parts of 2,2,2-trimethyl-1,3-pentanediol methyl ethyl butyrate are fully stirred, and finally 0.3 parts of 2-amino-2-methyl-1-propanol are added to adjust the coating pH and viscosity. The properties of the paint are shown in Table 3.

[0047] Test items

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PUM

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Abstract

The invention provides a monocomponent self-cross-linking epoxy acrylic acid composite emulsion , its preparation method and uses, wherein the emulsion comprises the constituents of epoxy resin, (methyl) acrylic ester, alkenyl carboxyl acid, ethenyl aromatic compound, silicane coupling agent, initiating agent, emulsifying agent, pH regulator, neutralization agent and water. The composite emulsion is prepared through the emulsion polymerization process and by using epoxy propylene acid composite emulsion as the base.

Description

technical field [0001] The invention relates to the field of composite polymer materials, in particular to a single-component self-crosslinking epoxy-acrylic composite emulsion and its preparation method and application. Background technique [0002] Epoxy resin has excellent bonding performance, corrosion resistance, electrical insulation performance, chemical resistance and low shrinkage, and is mainly used in the fields of anti-corrosion coatings, adhesives and composite materials, but it has a brittle texture and heat resistance. It has disadvantages such as poor performance, impact resistance, fatigue resistance, crack resistance and poor resistance to heat and humidity. Acrylic resin has good weather resistance, acid and alkali resistance and light resistance, and is mainly used in the fields of coatings, fabric treatment and adhesives, but it has disadvantages such as poor water resistance and cold resistance, brittle at low temperature, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08J3/24C08K5/54
Inventor 涂伟萍周新华胡剑青
Owner 广东鸿昌化工有限公司
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