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Organic silicon-polyurethane-acrylate composite coating agent crosslinked at room temperature and preparation method thereof

A room temperature cross-linking, acrylate technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor compatibility and poor mechanical properties of composite systems, and achieve high product quality, low cost, and investment. The effect of high output ratio

Active Publication Date: 2012-07-18
浙江摩天新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention patents disclosed above still have many deficiencies, such as complex process and high cost, and microphase separation in the obtained polyurethane-acrylate-organic silicon system, resulting in insufficient mechanical properties of this type of composite coating agent Ideal, difficult for industrial application
[0006] At present, the mechanical properties of silicone-polyurethane-acrylate composite coating agents at home and abroad are still not good, and the compatibility of the composite system is not good. In addition, with the The development of new materials and new synthesis preparation technology, and the emergence of a group of new silicone-polyurethane-acrylate composite coating agents with good compatibility and mechanical properties have provided the possibility for the development of new composite coatings

Method used

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  • Organic silicon-polyurethane-acrylate composite coating agent crosslinked at room temperature and preparation method thereof
  • Organic silicon-polyurethane-acrylate composite coating agent crosslinked at room temperature and preparation method thereof
  • Organic silicon-polyurethane-acrylate composite coating agent crosslinked at room temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Dissolve 100 mg of hydroxysilicone oil (molecular weight: 2000), 80 mg of hydroxyl-terminated polyoxyethylene ether, 150 mg of toluene, 150 mg of ethyl acetate, and 2.5 mg of p-toluenesulfonic acid, and heat up to 70 o C was reacted for 2 hours to prepare a hydroxyl silicone oil solution containing polyoxyethylene ether.

[0036] Dissolve 100 mg of polyoxyethylene ether-containing hydroxyl silicone oil in a mixed solvent of 100 mg toluene and 90 mg ethyl acetate, heat to 75 o C. Mix 85 mg of methyl methacrylate, 50 mg of butyl acrylate and 6 mg of β-hydroxyethyl methacrylate, and add 1.2 mg of dibenzoyl peroxide. After fully dissolving, slowly add the above-mentioned In the hydroxy silicone oil solution of polyoxyethylene base ether, the control dropwise adding time is 2.5 hours, after adding, add again at 85 o C for 1.5 hours, then add 20 mg of toluene and 25 mg of ethyl acetate, and stir evenly to prepare a polyoxyethylene ether-containing silicone-ac...

Embodiment 2

[0039] The same as in Example 1, but the amount of hydroxyl-terminated polyoxyethylene ether in step (1) was changed from 80 mg to 60 mg, and the others remained unchanged.

Embodiment 3

[0041] Same as Example 1, but the amount of hydroxyl-terminated polyoxyethylene ether in step (1) was changed from 80 mg to 100 mg, and the others remained unchanged.

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Abstract

The invention belongs to the technical field of chemical industry and specifically relates to an organic silicon-polyurethane-acrylate composite coating agent crosslinked at room temperature and a preparation method thereof. The method comprises the following steps of: performing free radical polymerization reaction and hydroxyl condensation reaction of acrylate monomers with hydroxyl-terminated silicon oil and polyoxyethylene ether to prepare hydroxyl-containing organic silicon modified acrylate resin, finally mixing the hydroxyl-containing organic silicon modified acrylate resin with polyisocyanate and other cross-linking agents according to the proportion, and uniformly stirring so as to get the organic silicon-polyurethane-acrylate composite coating agent crosslinked at the room temperature. The appearance and the stability of the organic silicon-polyurethane-acrylate composite coating agent crosslinked at the room temperature, which is prepared by the invention, are the same withthose of an ordinary organic silicon-polyurethane-acrylate coating agent basically, and a controllable cross-linking curing way at the room temperature is provided, so that the practical application value is great. The preparation method disclosed by the invention has the advantages of simple and convenient process, high product quality, high input-output ratio and the like.

Description

[0001] technical field [0002] The invention belongs to the technical field of chemical industry, and in particular relates to a room-temperature cross-linked organic silicon-polyurethane-acrylate composite coating agent and a preparation method thereof. Background technique [0003] Although silicone resin has excellent weather resistance and low surface energy, its coating has low mechanical strength and poor adhesion; polyacrylate resin has excellent light resistance, acid, alkali and salt corrosion resistance and excellent flexibility. However, its coating is extremely sensitive to temperature, has poor weather resistance, water resistance, and solvent resistance; polyurethane resin has excellent low temperature resistance, chemical solvent resistance, abrasion resistance, and strong adhesion, but its construction requirements are high. In order to overcome these shortcomings, a variety of polymer composite modifications are often used to improve its performance. Polyur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C08F290/14C08G18/63C08G81/00
Inventor 周安安
Owner 浙江摩天新材料有限公司
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