Preparation method of staining-resistant wear-resistant finishing varnish
A varnish and a technology of preparation steps, which are applied in the field of preparation of stain-resistant and wear-resistant varnishes, can solve the problems of poor stain resistance, poor scratch resistance and wear resistance, and insufficient hardness, and achieve good chemical stability. properties, low surface energy, and enhanced binding
Inactive Publication Date: 2019-06-28
谭祖科
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Problems solved by technology
[0011] The main technical problem to be solved by the present invention is to provide a stain-resistant and anti-fouling paint for the defects of insufficient hardness, poor anti-scratch and wear-resistant properties, and poor anti-stain performance when the varnish is used for coating protective paints such as automobiles, and the anti-smudge performance needs to be improved. Preparation method of grinding varnish
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[0034] Preparation of natural silicone oil: Put 200g of oatmeal and 400mL of sodium silicate solution with a mass fraction of 35% into a water bath reaction kettle with a stirrer, heat the water bath to 70°C, start the stirrer, stir for 3 hours and use a mass fraction of Adjust the pH to neutral with 95% glacial acetic acid, then transfer it to a high-speed centrifuge, centrifuge at a high speed of 3500r / min for 12 minutes, remove the supernatant, separate and obtain the lower precipitate, wash the precipitate twice with water, and then transfer it to a set temperature of 70 In an oven at ℃, place a beaker under the precipitation, heat it for 10 hours, collect the natural silicone oil, and set it aside.
[0035] Preparation of graft enhancer: Add 6g of α-amylase and 100mL of starch gelatin with a mass fraction of 45% to the beaker, stir and disperse, then add 5g of 2,3-epoxypropyltrimethylammonium chloride, place the beaker In a water bath, heat up to 55° C., keep warm for 3 h...
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Abstract
The invention belongs to the technical field of coating preparation and particularly relates to a preparation method of a staining-resistant wear-resistant finishing varnish. Hydrolyzed fluorinated silane molecules are adsorbed to the surface of titanium dioxide nano-particles to form continuous fluorinated silane molecular layers, so that the titanium dioxide nano-particles have good dispersity when a varnish layer is not dried; by virtue of a fluorinated silane surface coating layer, the Van Der Waals force of the titanium dioxide nano-particles to water is weakened, and the effect of hydrogen bonds is reduced; by virtue of fluorinated silane, the bonding effect between the titanium dioxide nano-particles and fluorocarbon resin can be further improved, so that a fluorine resin emulsion has low surface energy and presents super-hydrophobicity, and the staining resistance can be remarkably improved; and by utilizing natural silicone oil as a key component of the finishing varnish, thedispersing performance of chitosan and viscous starch in the finishing varnish is improved, and the hardness and surface hand feeling of the finishing varnish are improved; and by virtue of lignin, the average molecular weight of the finishing varnish can be increased in the later curing period, and the deposition density of the finishing varnish on the surfaces of other organic varnish layers canbe increased, so that the finishing varnish has wide application prospects.
Description
technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a preparation method of a stain-resistant and wear-resistant varnish. Background technique [0002] At present, more and more coatings are used in the decoration of exterior walls. In order to improve the quality of coatings, most manufacturers apply a layer of transparent varnish on the outside of the coatings to improve the color retention and gloss of the coatings. , weather resistance. [0003] Varnish, commonly known as varnish, is frequently used in model making. Often used on civilian models to enhance the brilliance of the finished product. The varnish should have good resistance to external conditions, must have the necessary hue and decoration, and also have a protective effect on the base coat. At present, common varnishes include automotive varnishes, transparent varnishes for exterior walls, metal varnishes, transparent polyurethane varnishes...
Claims
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IPC IPC(8): C09D4/02C09D4/06C09D5/16C09D7/61C09D7/63C09D7/65C09D7/62
Inventor 谭祖科
Owner 谭祖科
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