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Water-based acrylic resin and preparation method thereof

A technology of water-based acrylic acid and butyl acrylate, which is applied in the direction of coating, etc., can solve the problems of water-based acrylic resin application field limitation, insufficient flexibility, irreversibility, etc., to achieve gel effect, easy heat transfer, and stable polymerization reaction Effect

Pending Publication Date: 2021-01-29
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the water-based acrylic resin coating has the above excellent properties, it also has its own shortcomings that cannot be eliminated, mainly in the hot sticky and cold brittleness, insufficient flexibility, and low solid content after the resin film is dried, so the application field of water-based acrylic resin are also restricted accordingly

Method used

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  • Water-based acrylic resin and preparation method thereof
  • Water-based acrylic resin and preparation method thereof
  • Water-based acrylic resin and preparation method thereof

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preparation example Construction

[0024] The invention provides a kind of preparation method of waterborne acrylic resin, described method comprises the following steps:

[0025] (1) Add the solvent to the container, and then add the P1 component;

[0026] (2) Add P2 component and insulation component to the container;

[0027] (3) After the heat preservation is completed, the water-based acrylic resin is obtained through stirring, distillation and emulsification.

[0028] The steps are described and illustrated in detail below.

[0029] Step (1) Add solvent to the vessel, then add component P1.

[0030] In the step (1) of the present invention, a solvent is added into the container and stirred, and the solvent is ethylene glycol butyl ether and dodecanethiol.

[0031] According to the present invention, in this step, the container is a flask, preferably a 2000mL three-necked flask equipped with a stirrer, a thermometer and a separating funnel, and the three-necked flask is kept at a constant temperature, p...

Embodiment approach

[0074] According to a preferred embodiment of the present invention, distilled water is added for high-speed stirring until ethanol is completely distilled. Preferably, the emulsification time is 0.2-1 h, preferably 0.2-0.8 h, more preferably 0.5 h.

[0075] The beneficial effects that the present invention has:

[0076] (1) The water-based acrylic resin prepared by the present invention has a higher solid content, which can reach 38.73%;

[0077] (2) the prepared water-based acrylic resin has higher impact resistance, and the impact resistance is 500g / 50cm;

[0078] (3) the adhesive force of prepared water-based acrylic resin is higher, can reach 0 level, and the hardness of prepared water-based acrylic resin can reach H;

[0079] (4) The present invention prepares waterborne acrylic resin with the method for solution polymerization, has advantages such as heat transfer is easy, gel effect is difficult to occur, reaction temperature is easy to control, and polymerization rea...

Embodiment 1

[0084] Add 150 g of ethylene glycol butyl ether and 7.65 g of dodecanethiol into a 2000 mL three-necked flask equipped with a stirrer, a thermometer, and a separatory funnel, and start the stirrer at a stirring speed of about 350 rpm. Set the temperature of the water bath to be controlled at about 75°C (observe the temperature of the thermometer). Add P1 component dropwise in the flask, P1 component is methyl methacrylate 57g, butyl acrylate 52g, hydroxyethyl methacrylate 34g, vinyltrioxysilane 7g, azobisisobutyronitrile 2.4g, Before dropping the P1 component, it needs to be ultrasonically dispersed, and the dropping time is 2.5h; after dropping the P1 component, add the insulation component to the flask, and the insulation component is: 0.48g azobisisobutyl Nitrile, 0.66g of dodecanethiol, 20g of ethanol (directly added after ultrasonic dispersion), heat preservation reaction for 1h.

[0085] After the heat preservation reaction, add the P2 component dropwise to the flask. B...

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Abstract

The invention provides a water-based acrylic resin and a preparation method thereof, and the preparation method comprises the following steps of: adding a solvent into a container, then adding a P1 component, then adding a P2 component and a heat preservation component into the container, and after heat preservation is finished, conducting stirring, distilling and emulsifying to obtain the water-based acrylic resin. According to the present invention, with the method, the water-based acrylic resin with the characteristics of high solid content and good adhesion can be prepared, the hardness and the impact resistance are high, and the preparation method has characteristics of simple operation, high efficiency, and high practical value.

Description

technical field [0001] The invention relates to the field of water-based paint, in particular to a preparation method of water-based acrylic resin. Background technique [0002] Acrylic resin coatings are obtained from acrylate or methacrylate and other vinyl monomers through free radical polymerization under certain conditions. It is characterized by good decorative appearance of the coating film, excellent light resistance and Outdoor weather resistance, color and gloss retention, is the main variety of modern decorative coatings. It includes two types of thermoplastic acrylic resins and thermosetting acrylic resins. The most important application is the automobile industry, but it is also widely used in light industry, household appliances, coiled steel materials, instruments and meters, as well as wood, plastic, fabric and other products. Because of its environmental protection, low cost, construction safety and other advantages, it has become the main development dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/20C08F230/08C08F220/06C08F2/06C09D133/12
CPCC08F220/14C08F2/06C09D143/04
Inventor 陶栋梁车红彪金凤许杰崔玉民张宏陈继堂王永忠姜广鹏
Owner FUYANG NORMAL UNIVERSITY
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