Medium and low temperature curing organosilicone modified acrylic acid-polyurethane water-based coating and preparation method thereof
A technology of acrylic polyurethane and water-based coatings, which is applied in the direction of polyurea/polyurethane coatings, fireproof coatings, coatings, etc., and can solve the problems of poor high temperature resistance and flame retardancy, poor water resistance, and low hardness of water-based acrylic polyurethane coatings. Achieve excellent high temperature resistance and flame retardancy, excellent flexibility, and simple preparation process
Inactive Publication Date: 2019-06-11
常州穗时新材料有限公司 +1
View PDF7 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
These two methods can greatly improve the gloss and color retention of acrylic-polyurethane coatings. However, the shortcomings of water-based acrylic polyurethane coatings such as low hardness, poor high temperature resistance, flame retardancy, and poor water resistance are not due to the silicone resin. Significantly improved by introducing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-2
[0027] Preparation of water-soluble silicone resin: according to the formula shown in Table 1, mix and stir each component evenly, and then filter;
[0028] Preparation of acrylic water-based color paste: According to the formula in Table 1, add all raw materials except hydroxypropyl emulsion into the ladle, stir evenly, grind the color paste to a fineness of less than 20 μm in a high-speed dispersing device, discharge the material, and The metered hydroxypropyl emulsion can be mixed and stirred evenly;
[0029] After mixing the acrylic water-based color paste and curing agent uniformly in a ratio of 7:1, add the newly prepared water-soluble silicone resin, spray and cure, and obtain the silicone-modified acrylic polyurethane coating. In parts by mass, the water-soluble silicone resin accounts for 40% of the total mass of the paint.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a medium and low temperature curing organosilicone modified acrylic acid-polyurethane water-based coating and a preparation method thereof. The coating is composed of the following components, in parts by weight: 15-50 parts of water-soluble organosilicone resin, 40-80 parts of acrylic water-based color paste, and 5-20 parts of an isocyanate curing agent, wherein the water-soluble organosilicone resin is prepared by performing hydrolysis on a siloxane monomer in deionized water or an acidic sol system under the action of an acidic catalyst, and performing condensation.The organosilicone modified acrylic acid-polyurethane water-based coating provided by the invention has a simple preparation process, and the coating layer can be cured at a room temperature or medium and low temperature; hardness of the cured coating layer is not lower than 3H, and the coating has high-temperature resistance, flame retardancy, good water resistance and excellent resistance to chemical media, and is a novel high-performance environmentally-friendly coating.
Description
technical field [0001] The invention relates to the field of water-based coatings, in particular to a medium-low temperature curing silicone-modified acrylic polyurethane water-based coating and a preparation method thereof. Background technique [0002] In recent years, the national environmental protection policy has been unprecedentedly strict, and people's pursuit of safety and health has become increasingly intense. Under this background, water-based coatings have gained unprecedented development opportunities. The acrylic-polyurethane coating with hydroxyacrylic emulsion and water-based isocyanate curing agent as the main raw materials is an important high-performance and environmentally friendly coating. It can be used as a primer or as a high weather-resistant topcoat through formula design. Silicone resin has a Si-O-Si structure as the skeleton, has excellent UV resistance and oxidation resistance, and can be used to improve the weather resistance of acrylic-polyure...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C09D175/04C09D183/04C09D5/18C09D7/61
Inventor 陈子辉林家祥缪国元薛亚波
Owner 常州穗时新材料有限公司