High-temperature-resistant compound leveling agent and preparation method thereof

Abstract

The invention relates to the technical field of coatings, and discloses a high-temperature-resistant compound leveling agent which comprises, by weight, 1-100 parts of leveling agent A and 1-100 partsof leveling agent B. The leveling agent A comprises organic silicon resin and additives, and the leveling agent B comprises fluorocarbon modified polyacrylic ester, glycerin, ethylene oxide and / or propylene oxide. The invention further discloses a preparation method of the high-temperature-resistant compound leveling agent. The preparation method includes the steps: preparing the leveling agent Aand the leveling agent B; mixing the leveling agent A and the leveling agent B; stirring mixture for 4-20 hours at the normal temperature, and sufficiently and uniformly mixing the mixture to obtainthe compound leveling agent. On one hand, the prepared compound leveling agent has surface tension reducing ability, on the other hand, integrated side chain methyl is kept, excellent smoothness is given, preparation processes are good in adaptation, production efficiency is high, products do not contain poisonous catalysts such as lead and mercury and has good leveling properties and antifoulingproperties, and environmental protection performance is good.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-temperature-resistant composite leveling agent and a preparation method thereof. Background technique [0002] Leveling agent is a commonly used coating additive, which can promote the formation of a flat, smooth and uniform coating film during the drying and film forming process of the coating. A class of substances that can effectively reduce the surface tension of coating fluids and improve their leveling and uniformity. It can improve the permeability of the coating solution, reduce the possibility of spots and marks when brushing, increase the coverage, and make the film formation uniform and natural. Mainly surfactants, organic solvents, etc. There are many types of leveling agents, and the types of leveling agents used in different coatings are also different. High boiling point solvents or butyl cellulose can be used in solvent-based finishes. In water-based f...

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Problems solved by technology

[0007] Chinese patent CN102153902A discloses a fluorocarbon anti-shrinkage crater leveling agent for coating ink, which is prepared by mixing, heating and stirring a solvent, a fluorine-containing acrylate monomer and an initiator, and the prepared leveling agent has a surface tension of 21-24 and has a certain The anti-shrinkage ability, but it does not explain the resistance of the structure product to other factors such as high temperature. At the same time, solvents are needed in the preparation process, which increases environmental pollution and the degree of harm to the human body when the product is used.

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