Acrylate emulsion and preparation method thereof

A technology of acrylate and butyl acrylate, which is applied in the field of acrylic emulsion and its preparation, can solve problems such as low adhesion, insufficient hardness of acrylate emulsion, and poor water resistance, and achieve mild preparation conditions, improved water resistance, and easy availability of raw materials Effect

Inactive Publication Date: 2019-12-10
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the currently prepared acrylate emulsions still have shortcomings such as insufficient hardness, poor water resistance, and low adhesion. Therefore, it is necessary to find a method for preparing acrylate emulsions to obtain acrylate emulsions with excellent properties.

Method used

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  • Acrylate emulsion and preparation method thereof
  • Acrylate emulsion and preparation method thereof
  • Acrylate emulsion and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0062] Another aspect of the present invention is to provide a kind of preparation method of acrylate emulsion, preferably the method for preparing above-mentioned acrylate emulsion, the method comprises the following steps:

[0063] Step 1, prepare pre-emulsion;

[0064] According to the present invention, the concrete process of preparing pre-emulsion is:

[0065] Add emulsifiers SE-10 and OP-10 to 90ml deionized water at the same time, mix well, and prepare a composite emulsifier aqueous solution, and then divide the composite emulsifier aqueous solution into 3 parts by volume, which are 35ml, 25ml and 30ml;

[0066] Add the core monomer into 35ml emulsifier solution, stir and mix thoroughly at room temperature, pre-emulsify for 1.5-2.5 hours, preferably 2 hours, to obtain a pre-emulsified core emulsion; add the shell monomer into 25ml emulsifier aqueous solution, Mix well, and pre-emulsify for 1.5-2.5 hours, preferably 2 hours, to obtain a pre-emulsified shell emulsion; a...

Embodiment 1

[0096] (1) Preparation of pre-emulsion

[0097] Add 0.67g SE-10 and 0.34g OP-10 into 90mL deionized water together to make the emulsifier aqueous solution required for the experiment. The experiment needs to divide the emulsifier aqueous solution into three parts, 35mL, 25mL and 30mL respectively.

[0098] Add the nuclear monomer (35gMMA+15gBA) into 35mL of emulsifier aqueous solution, mix thoroughly under the stirring of an electric stirrer at room temperature, and pre-emulsify for 2 hours to obtain a milky white and stable pre-emulsified nuclear emulsion; similarly , the shell monomer (15gMMA+35gBA) was added to 25mL emulsifier aqueous solution, fully stirred at room temperature, and pre-emulsified for 2h to obtain a pre-emulsified shell emulsion. The remaining 30mL emulsifier aqueous solution was added with 0.3g NaHCO3 buffer to prepare the buffer solution used in the experiment.

[0099] 0.5 g of the initiator was dissolved in 30 ml of deionized water to obtain an aqueou...

Embodiment 2

[0106] The difference between this embodiment and Example 1 is that the composition of the emulsifier is 1.0g SE-10 and 0.5g OP-10, and other steps are the same as Example 1.

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Abstract

The invention discloses an acrylate emulsion and a preparation method thereof. The acrylate emulsion comprises the raw materials: a mixed monomer, an emulsifier, an initiator and water. The acrylate emulsion is prepared by semi continuous emulsion polymerization. A latex film formed by the obtained acrylate emulsion has good water resistance, hardness and adhesion force, the preparation process issimple, the raw materials are easy to obtain, the conditions are mild, and the acrylate emulsion is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of architectural coatings, in particular to an acrylic emulsion and a preparation method thereof. Background technique [0002] Acrylic latex paint is the main variety of building exterior wall paint at home and abroad, but its performance needs to be improved, such as hardness, adhesion, stain resistance and water resistance. [0003] The performance of acrylic latex paint is mainly determined by the raw material and polymerization process of acrylic latex. Core-shell acrylate emulsion polymerization is developed on the basis of seed emulsion polymerization. According to the different ways of adding core-shell monomers, the emulsion polymerization methods can be divided into batch method, swelling method, semi-continuous method and continuous method. The latex particles obtained by the semi-continuous method have a finer particle size and a uniform distribution, and the finally obtained acrylate emulsion is stable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/32C08F2/26C08F2/30C09D133/12C09D133/08
CPCC08F2/26C08F2/30C08F220/14C08F220/18C09D133/08C09D133/12
Inventor 殷榕灿陶栋梁金凤崔玉民王永忠姜广鹏张琳陈继堂
Owner FUYANG NORMAL UNIVERSITY
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