Acrylic epoxy core-shell emulsion and preparation method thereof

A technology of acrylic and epoxy core, which is applied in the field of acrylic epoxy core-shell emulsion and its preparation, to achieve good raw material system, improve the compactness of film formation, and improve the effect of raw material system

Active Publication Date: 2017-12-08
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are currently no products with such functions on the market. Therefore, how to develop an acrylic

Method used

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  • Acrylic epoxy core-shell emulsion and preparation method thereof

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preparation example Construction

[0036] In addition, the present invention also provides a method for preparing the acrylic epoxy core-shell emulsion described in any one of the above, which specifically includes the following steps in terms of parts by mass,

[0037] 1) Pre-emulsification: Under normal temperature and pressure, mix 2-10 parts of anionic emulsifier, 20-30 parts of water, 5-10 parts of epoxy resin and 10-40 parts of butyl acrylate in a pre-emulsification tank, fully stir and dissolve , and sequentially add 20-40 parts of styrene, 5-20 parts of butyl acrylate, and 0.5-3 parts of acrylic acid;

[0038]2) Polymerization: add 90-210 parts of water and 1-2 parts of anionic emulsifier to the bottom of the reaction kettle, raise the temperature to 80-90°C, stir for 20-40 minutes, add dropwise the pre-emulsion obtained in step 1) and 0.1-0.5 part of initiator is used for chemical reaction, the dropping time is 150-300 minutes, the reaction temperature is 80-90°C, and the reaction time is 170-340 minut...

Embodiment 1

[0046] A preparation method of an acrylic epoxy core-shell emulsion, calculated in parts by mass, including 150 parts of water, 30 parts of styrene, 30 parts of methyl methacrylate, 20 parts of isooctyl acrylate, 20 parts of butyl acrylate, acrylic acid 0.5 parts, 0.5 parts of methacrylic acid, 5 parts of epoxy resin, 5 parts of anionic emulsifier, 1 part of crosslinking monomer, 5 parts of water-based epoxy curing agent, 0.5 parts of initiator, 0.1 part of oxidizing agent, and 0.1 part of reducing agent;

[0047] Wherein, the epoxy resin is E44;

[0048] Described anionic emulsifier is sodium lauryl sulfate;

[0049] The crosslinking monomer is trimethylolpropane trimethacrylate;

[0050] The water-based epoxy curing agent is an amine curing agent;

[0051] Described initiator is sodium persulfate;

[0052] The oxidant is an organic peroxide;

[0053] Described reducing agent is sodium binitrite;

[0054] The preparation method of this emulsion specifically comprises the...

Embodiment 2

[0064] A preparation method of an acrylic epoxy core-shell emulsion, calculated in parts by mass, including 200 parts of water, 45 parts of styrene, 45 parts of methyl methacrylate, 50 parts of isooctyl acrylate, 50 parts of butyl acrylate, acrylic acid 3 parts, 3 parts of methacrylic acid, 7 parts of epoxy resin, 10 parts of anionic emulsifier, 3 parts of crosslinking monomer, 10 parts of water-based epoxy curing agent, 1 part of initiator, 0.3 part of oxidizing agent, and 0.3 part of reducing agent;

[0065] Wherein, described epoxy resin is that E44, E35 are mixed according to 1:1;

[0066] Described anionic emulsifier is sodium dodecylbenzenesulfonate;

[0067] The cross-linking monomer is trimethylolpropane acrylate, tripropylene glycol diacrylate mixed according to 1:1;

[0068] The water-based epoxy curing agent is an alcohol curing agent;

[0069] Described initiator is ammonium persulfate;

[0070] The oxidant is an organic peroxide;

[0071] The reducing agent is...

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Abstract

The invention discloses acrylic epoxy core-shell emulsion and a preparation method thereof. The acrylic epoxy core-shell emulsion is prepared from the following components in parts by mass: 150 to 300 parts of water, 30 to 60 parts of styrene, 30 to 60 parts of methyl methacrylate, 20 to 75 parts of iso-octyl acrylate, 20 to 75 parts of butyl acrylate, 0.5 to 5 parts of acrylic acid, 0.5 to 5 parts of methacrylic acid, 5 to 10 parts of epoxy resin, 5 to 20 parts of an anionic emulsifier, 1 to 5 parts of a cross-linking monomer, 5 to 15 parts of a waterborne epoxy curing agent, 0.5 to 2 parts of an initiator, 0.1 to 0.5 part of an oxidant and 0.1 to 0.5 part of a reductant. According to the acrylic epoxy core-shell emulsion disclosed by the invention, acrylic emulsion is combined with the epoxy resin, so that the disadvantages of easiness in yellowing, poor damp heat resistance, poor toughness and the like of the epoxy resin are remedied, and the properties of hardness, wear resistance and the like of the acrylic emulsion are increased.

Description

technical field [0001] The invention relates to a core-shell emulsion and a preparation method thereof, in particular to an acrylic epoxy core-shell emulsion and a preparation method thereof. Background technique [0002] Epoxy resin has the characteristics of low shrinkage, excellent mechanical properties, excellent electrical properties, and stable chemical properties, but epoxy resin has poor impact resistance, poor toughness, brittleness, non-yellowing resistance, and poor weather resistance. During the construction process, most of the properties of the epoxy resin also need to play a role through the selection of the curing agent. Traditional acrylic emulsion has excellent elasticity, certain flexibility, excellent weather resistance, fast drying speed, etc., but it also has disadvantages such as poor fullness and easy to be affected by the external environment. Therefore, if the two can be combined and complement each other, so that the shortcomings of the two can co...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F212/08C08F220/14C08F220/18C08F220/06C08F2/26C08F4/40
CPCC08F2/26C08F4/40C08F283/10C08F220/1808C08F220/1804
Inventor 成煬霈黄祥斌罗云
Owner 佛山市顺德区巴德富实业有限公司
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