Ultrafast-drying high-weather-resistance alcohol acid aqueous dispersion and preparation method thereof

Abstract

The invention relates to an ultrafast-drying high-weather-resistance alcohol acid aqueous dispersion and a preparation method thereof. The alcohol acid aqueous dispersion is prepared from the following raw materials: 60 to 80 parts of soya oil acid, 12 to 20 parts of benzoic acid, 50 to 65 parts of phthalic anhydride, 30 to 40 parts of glycerin, 2 to 8 parts of acrylics, 10 to 20 parts of silica sol, 20 to 40 parts of deionized water, 0.2 to 0.5 part of ammonium persulfate, 0.2 to 0.5 part of lauryl sodium sulfate, 0.2 to 0.5 part of potassium bicarbonate and 3 to 8 parts of an organosilicon monomer. The preparation method comprises the steps of (1) preparing an acrylic acid modified nano silicon dioxide polymerized alkyd emulsion; (2) preparing an organic silicon modified nano silicon dioxide polymerized alkyd emulsion; and (3) mixing and stirring the acrylic acid modified nano silicon dioxide polymerized alkyd emulsion obtained in the step (1) and the organic silicon modified nano silicon dioxide polymerized alkyd emulsion obtained in the step (2), then adding a siloxane coupling agent, and uniformly dispersing to obtain the coating. The alcohol acid aqueous dispersion disclosed by the invention has the advantages of ultrafast drying, high weather resistance and the like, and the preparation method is simple.

Description

technical field [0001] The invention relates to an alkyd aqueous dispersion and a preparation method thereof, in particular to an ultra-quick-drying high-weather-resistant alkyd aqueous dispersion and a preparation method thereof. Background technique [0002] The production process of alkyd resin is simple, the price is low, it has the characteristics of good gloss, dryness, hardness and durability, and it is widely used. Since General Electric Company Kienle developed phthalic acid-glycerides containing unsaturated fatty acids for the synthesis of alkyd resins in 1927, it has developed rapidly, accounting for more than 45% of all synthetic resins used in coatings abroad. According to statistics, in 2016, alkyd resin paints accounted for 30% of my country's total paint production, and other amino paints, nitrocellulose paints, perchlorethylene paints, etc. 40% of the volume, so alkyd resin occupies an extremely important position in the coatings industry. [0003] However,...

AI Technical Summary

Problems solved by technology

However, the emulsion particle size of the alkyd resin aqueous dispersion is large, the dispersion is uneven, the drying speed is slow, and the weather resistance is average.