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Extra-weather-resistant waterborne environment-protective resin and preparation technology thereof

An environmentally friendly resin, ultra-weather-resistant technology, applied in the field of acrylic resin preparation, can solve the problems of water resistance, dust adhesion, easy to stick back, etc., to eliminate foaming and foam stabilization defects, improve solvent resistance, and comprehensive performance. Effect

Inactive Publication Date: 2017-06-30
沈阳宣伯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylic resin synthetic coatings have strong adhesion, and have excellent performances such as gloss retention, color retention and three-proof (waterproof, moisture-proof, and mold-proof), which can not only play a decorative role, but also play a protective role. Used in various coatings Such as solvent-based, water-based and light-curing coatings, which play an increasingly important role in the protection and decoration of aircraft, automobiles, electronics, paper, textiles, metals, construction, plastics and wood; but their heat resistance Poor, poor solvent resistance, not water resistant, easy to stick and dust at high temperature, and brittle at low temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0069] A preparation method of super-weather-resistant water-based environmental protection resin comprises the following steps

[0070] Step 1: dissolving benzoyl peroxide in the mixed solution of the monomer, the first self-crosslinking monomer, the first functional monomer and other additives, and transferring it to a constant pressure dropping funnel for later use;

[0071] Step 2: Weigh the solvent into a four-neck flask and heat to reflux;

[0072] Step 3: Increase to the set temperature of 100 0 When C, the mixed solution prepared in step 1 was slowly added dropwise to the four-necked flask, and when half of the dropwise addition was made, the second functional monomer was added, and the dropwise addition was continued for 3 hours and kept for 2 hours; Dissolve azobisisobutyronitrile and the second self-crosslinking monomer in ethyl acetate, add dropwise after the first stage of incubation for 2 hours, and then incubate for 1 hour;

[0073] Step 4: After the heat pres...

specific Embodiment 1

[0080] Step 1: Dissolve 1.70 parts of benzoyl peroxide in 5.00 parts of styrene, 34.00 parts of methyl methacrylate, 9.00 parts of ethyl acrylate, 18.00 parts of butyl acrylate, 5.00 parts of methacrylic acid, 3.00 parts of acrylic acid, 0.80 parts of isobornyl acrylate, 3.00 parts of diacetone acrylamide, 2.00 parts of octafluoropentyl methacrylate, and a mixed solution of 0.50 parts of n-dodecyl mercaptan and 4.00 parts of diacetone alcohol, transferred to constant pressure drop solution funnel spare;

[0081] Step 2: Weigh 8.00 parts of isopropanol, 8.00 parts of dipropylene glycol methyl ether, 28.00 parts of n-butanol, and 4.00 parts of ethyl acetate into a four-necked flask and heat to reflux;

[0082] Step 3: Increase to the set temperature of 100 0 At C, slowly drop the mixed solution prepared in step 1 into the four-necked flask, add 2.40 parts of vinyl triethoxysilane when half of the dropwise addition, continue to dropwise, dropwise for 3 hours, keep warm for 2 Ho...

specific Embodiment 2

[0087] Step 1: Dissolve 2.00 parts of benzoyl peroxide in 6.00 parts of styrene, 36.00 parts of methyl methacrylate, 11.00 parts of ethyl acrylate, 20.00 parts of butyl acrylate, 6.00 parts of methacrylic acid, 4.00 parts of acrylic acid, 1.00 parts of isobornyl acrylate, 4.00 parts of diacetone acrylamide, 3.00 parts of octafluoropentyl methacrylate, and a mixed solution of 0.70 parts of n-dodecyl mercaptan and 5.00 parts of diacetone alcohol, transferred to constant pressure drop solution funnel spare;

[0088] Step 2: Weigh 10.00 parts of isopropanol, 10.00 parts of dipropylene glycol methyl ether, 31.00 parts of n-butanol, and 6.00 parts of ethyl acetate into a four-necked flask and heat to reflux;

[0089] Step 3: Increase to the set temperature of 100 0 At C, slowly drop the mixed solution prepared in step 1 into the four-necked flask, add 2.60 parts of vinyltriethoxysilane when half of the dropwise addition is completed, and the dropwise addition time is 3 hours, and k...

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Abstract

According to the invention, methyl methacrylate (MMA), butyl acrylate (BA), ethyl acrylate (EA), acrylic acid (AA) and methacrylic acid (MAA) and trifluoroethyl methacrylate (TFEMA), vinyltriethoxysilane (KH-151) and styrene (ST) and other functional monomers are used as comonomers; benzoyl peroxide (BPO) is used as a chain initiator, a solution polymerization method is used, and a free radical polymerization is carried out through a special process to synthesize organic fluorine-silicon modified waterborne acrylic resin with excellent performance. The resin is extra-weather-resistant, is applied to a water-based acrylic coating, and has advantages of good gloss retention, exterior durability, good pollution resistance and the like. By the use of the resin, water resistance, solvent resistance and heat resistance of a water-based acrylic resin coating can be improved, and hardness and shock resistance of a paint film can be enhanced. As a coating with superior performance, the product has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of acrylic resin preparation, in particular to a super-weather-resistant water-based environmental protection resin and a preparation process thereof. Background technique [0002] Compared with traditional solvent-based coatings, water-based coatings have the advantages of low price, safe use, saving resources and energy, and reducing environmental pollution and public nuisance, so it has become the main direction of the current development of the coatings industry. However, the coating film of environment-friendly water-based acrylic resin has high water absorption rate, poor heat resistance, water resistance and weather resistance, especially in terms of hardness, impact resistance and solvent resistance, which are not as good as solvent-based coatings. Therefore, the application in many fields, especially the field of heavy anti-corrosion is limited; people study its modification to improve the comprehen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F220/06C08F220/58C08F230/08C08F220/22C08F4/34C09D133/12
CPCC08F4/34C08F220/14C09D133/12C08F220/1804C08F220/18C08F212/08C08F220/06C08F220/58C08F230/08C08F220/22
Inventor 郭虹宗瑞王松玲李金金
Owner 沈阳宣伯新材料科技有限公司
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