High-durability water-based fluorocarbon paint and preparation method thereof
A water-based fluorocarbon and durability technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as narrow application range, water-based fluorocarbon coatings, corrosion resistance, weather resistance, etc. , good environmental performance
Pending Publication Date: 2022-04-08
上海船舶工艺研究所(中国船舶集团有限公司第十一研究所)
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Problems solved by technology
However, the scope of application of this patent is narrow and limited to aluminum materials
[0006] Fluorocarbon coatings themselves have excellent corrosion resistance, maintenance-free, strong adhesion, and long-term weather resistance. However, the corrosion resistance and weather resistance of existing water-based fluorocarbon coatings cannot meet the needs, and solvent-based fluorocarbon coatings Constrained by environmental protection laws and regulations, fluorocarbon coatings must start to develop in the direction of high solid content and water-based, research on high-performance water-based fluorocarbon coatings that meet environmental protection requirements
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Embodiment 1
[0037] The raw materials and the proportioning of the high-durability water-based fluorocarbon paint of Examples 1-5 and Comparative Examples 1-2 are listed in Table 1, and its preparation method may further comprise the steps:
[0038](1) Mix water-based polyvinylidene fluoride emulsion (PVDF) and acrylic resin emulsion evenly, stir at 50°C for 5 minutes; add fillers such as titanium dioxide, talc powder, barium sulfate, feldspar powder, silica fume powder, etc. Stir at a rotating speed of 15 minutes; after stirring evenly, add water-based additives such as defoamers, dispersants, anti-mold and fungicides, thickeners, film-forming aids and the water, and stir at a rotating speed of 1000r / min to make them evenly mixed , to obtain an aqueous slurry;
[0039] (2) Grinding the water-based slurry for 30 minutes to a certain fineness, filtering to remove slag; then adding the color paste into the water-based slurry for toning, stirring evenly and discharging to obtain component A; ...
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Abstract
The high-durability water-based fluorocarbon paint comprises a component A and a component B in a mass ratio of (4-6): 1, the component A is prepared from the following components in percentage by mass: 30 to 35 percent of water-based polyvinylidene fluoride emulsion, 15 to 20 percent of acrylic resin emulsion, 15 to 25 percent of filler, 5 to 20 percent of color paste, 2 to 3 percent of water-based additive and 10 to 20 percent of water. The water-based polyvinylidene fluoride emulsion with the fluorine content larger than or equal to 35% and the acrylic resin emulsion are adopted as main film forming matter, the performance reaches the level of oily high-temperature fluorocarbon paint, no abnormity exists when the paint is cooked with seawater at the temperature of 100 DEG C, VOC completely reaches the standard, the preparation process is simple, the cost is low, and the environment-friendly performance is good.
Description
technical field [0001] The invention belongs to the field of industrial coatings, and mainly relates to high-durability water-based fluorocarbon paints and a preparation method thereof. Background technique [0002] At present, people's research on fluorocarbon coatings has reached the level of molecular design, and structural design can be carried out according to actual needs, while absorbing the excellent properties of fluorocarbon resins, and at the same time endowing other functional groups with different personalities, so that they can meet various conditions of use. requirements. [0003] In order to further improve the solubility of fluorine-containing coatings, increase the solid content, and improve the workability, functional groups -OH and -COOH are introduced, which can be cross-linked and cured with isocyanate or amino resins, so-called cross-linkable fluorocarbon resin coatings. Functional groups are introduced by copolymerization with functional group-contai...
Claims
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IPC IPC(8): C09D151/00C09D133/08C09D5/08C09D7/20
Inventor 王娟方越由佳王永光
Owner 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所)