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
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[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
Description
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Application Information
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