Epoxy-acrylate composite emulsion and method for preparing same

A technology of epoxy acrylate and composite emulsion, which is applied in the direction of coating, etc., can solve the problems of poor environmental protection of coatings, and achieve the effects of strong environmental protection, improved stability, and improved water resistance

Inactive Publication Date: 2013-03-20
QINGDAO PENGHAI SOFT 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 dis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Under the conditions of 75°C and 750r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (KPS) 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 rotation speed to 1600r / min, add 3 parts of epoxy resin (E-44) 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.

[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 750r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (KPS) 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 rotation speed to 1600r / min, add 4 parts of epoxy resin (E-44) 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.

[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 750r / min, 4 parts of sodium dodecyl sulfate (SDS) and 0.5 parts of ammonium persulfate (KPS) 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 rotation speed to 1600r / min, add 5 parts of epoxy resin (E-44) 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.

[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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PUM

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Abstract

The invention relates to an epoxy-acrylate composite emulsion and a method for preparing the same. The method comprises the following steps: preparing a prepolymer from butyl acrylate (BA) and ethylene-ethyl acrylate (EEA) which server as raw materials, adding an acrylic diluent to dilute, improving by epoxy resin (E-44), adding sodium dodecyl sulfate (SDS), and adjusting the pH value to obtain the epoxy-acrylate composite emulsion. The epoxy-acrylate composite emulsion has low agglomeration rate and good water resistance and is highly environment-friendly.

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. Background technique [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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IPC IPC(8): C08F283/10C09D151/08
Inventor 于忠清翟伟伟
Owner QINGDAO PENGHAI SOFT CO LTD
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