Epoxy acrylate composite emulsion and preparation method thereof

A technology of epoxy acrylate and composite emulsion, applied in the direction of coating, can solve the problems of poor environmental protection of coatings, and achieve the effects of strong environmental protection, improved stability and increased cross-linking degree

Active Publication Date: 2015-05-20
HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional preparation process often uses organic solvents to dissolve epoxy resin, which makes the environmental protection of the coating poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Under the conditions of 75° C. and 750 r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (APS) were stirred in 40 parts of distilled water evenly. Prepare a prepolymer with 20 parts of butyl acrylate (BA) and 10 parts of ethylene-ethyl acrylate (EEA) as raw materials, and react for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 92°C, increase the speed to 1600r / min, add 3 parts of E-44 type epoxy resin for crosslinking modification, and react for 1.5h. Sodium bicarbonate was added to adjust the pH value of the system to 7, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0016] The coagulation rate of the emulsion is 8.68%, and the water absorption rate of the emulsion film is 17.21%.

Embodiment 2

[0018] Under the conditions of 75° C. and 750 r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (APS) were stirred in 40 parts of distilled water evenly. Prepare a prepolymer with 20 parts of butyl acrylate (BA) and 10 parts of ethylene-ethyl acrylate (EEA) as raw materials, and react for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 92°C, increase the speed to 1600r / min, add 4 parts of E-44 type epoxy resin () to carry out crosslinking modification, and react for 1.5h. Sodium bicarbonate was added to adjust the pH value of the system to 7, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0019] The coagulation rate of the emulsion is 5.89%, and the water absorption rate of the emulsion film is 12.89%.

Embodiment 3

[0021] Under the conditions of 75° C. and 750 r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (APS) were stirred in 40 parts of distilled water evenly. Prepare a prepolymer with 20 parts of butyl acrylate (BA) and 10 parts of ethylene-ethyl acrylate (EEA) as raw materials, and react for 2 hours. Add 10 parts of diluted monomer acrylic acid (AA) to dilute the prepolymer for 30min. Raise the temperature to 92°C, increase the speed to 1600r / min, add 5 parts of E-44 type epoxy resin for cross-linking modification, and react for 1.5h. Sodium bicarbonate was added to adjust the pH value of the system to 7, and the reaction was stirred for 30 minutes to obtain an epoxy acrylate composite emulsion.

[0022] The coagulation rate of the emulsion is 3.02%, and the water absorption rate of the emulsion film is 12.02%.

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Abstract

The invention relates to an epoxy acrylate composite emulsion and a preparation method thereof. The preparation method comprises the following steps: preparing a prepolymer from butyl acrylate (BA) and ethylene-ethyl acrylate (EEA), diluting with an acrylic acid diluter, modifying with epoxy resin (E-44), adding sodium lauryl sulfate (SDS), and regulating the pH value to prepare the epoxy acrylate composite emulsion. The epoxy acrylate composite emulsion has the advantages of low condensation rate, high environment friendliness and favorable water resistance.

Description

technical field [0001] The invention relates to an epoxy acrylate composite emulsion and a preparation method thereof, belonging to the field of chemical industry. technical background [0002] Epoxy resin has excellent adhesion, thermal stability, and chemical resistance, and is mainly used in anti-corrosion coatings, adhesives, and composite materials. Acrylic resin has excellent gloss and outdoor aging resistance, and is widely used in general industrial equipment and automobile industry. But there are also many defects in their water-based coatings, so people try to organically combine the two coatings to form composite emulsions. The preparation of composite emulsion by free radical graft copolymerization of epoxy-acrylate is a relatively common method, and its free radical graft copolymerization mechanism has been confirmed. However, the traditional preparation process often uses organic solvents to dissolve epoxy resins, making the coatings less environmentally frie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/10C09D151/08
Inventor 张明
Owner HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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