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Waterborne resin emulsion and method for preparing same

A water-based resin and emulsion technology, applied in the field of water-based resin emulsion and its preparation, can solve the problems of uneven mixing of hindered phenol and acrylic resin, poor resin damping performance, narrow damping temperature range, etc., and achieves short preparation route and good damping effect. , mild reaction effect

Active Publication Date: 2019-03-08
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned technical problems such as uneven mixing of hindered phenol and acrylic resin, poor compatibility, poor damping performance of existing resins, narrow damping temperature range, etc. Water-based resin emulsion with long-lasting damping effect and easy large-scale production and its preparation method. This technology introduces hindered phenol into functional acrylate monomer containing hindered phenol through chemical modification technology, and then successfully prepares large-scale resin emulsion through emulsion copolymerization preparation technology. On the basis of molecular water-based damping resin, by screening hindered phenol and acrylate monomers with different chemical structures, a macromolecular water-based resin emulsion is prepared, which has a wider temperature range and a longer service life

Method used

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  • Waterborne resin emulsion and method for preparing same
  • Waterborne resin emulsion and method for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A water-based resin emulsion, calculated in parts by weight, its raw material composition and content are as follows:

[0044]

[0045]

[0046] Wherein, the acrylate monomer is a mixture of methyl acrylate and butyl acrylate in a mass ratio of 30:15. The crosslinking monomer is a mixture selected from dipentaerythritol hexaacrylate and diethylene glycol diacrylate in a mass ratio of 1:5; the emulsifier is sodium lauryl sulfate, nonylphenol polyoxygen A mixture of vinyl ethers with a mass ratio of 1:1; the initiator is potassium persulfate.

[0047] The raw materials of the functional acrylate monomer include hydroxyethyl acrylate, isophorone diisocyanate, antioxidant CA, acetone and a catalyst in a weight ratio of 50:110:160:100:0.01, and the catalyst is Dibutyltin dilaurate.

[0048] The preparation method of described aqueous resin emulsion is:

[0049] 1) Put 110g of isophorone diisocyanate into a 500mL round-bottomed four-neck flask, 2 Under protection, a...

Embodiment 2

[0061] A water-based resin emulsion, calculated in parts by weight, its raw material composition and content are as follows:

[0062]

[0063] Wherein, the acrylate monomer is a mixture composed of methyl acrylate, ethyl acrylate, butyl acrylate and 2-ethylhexyl acrylate in a mass ratio of 30:20:10:10. The crosslinking monomer is selected from diethylene glycol diacrylate, ethoxylated bisphenol A dimethacrylate, ethoxylated trimethylolpropane triacrylate, and hyperbranched polyester acrylate in a mass ratio of 1: A mixture composed of 1:0.5:0.2; the emulsifier is a mixture composed of sodium lauryl sulfate, sodium dodecylbenzenesulfonate, and nonylphenol polyoxyethylene ether in a mass ratio of 2:2:1; The initiator is ammonium persulfate.

[0064] The raw materials of the functional acrylate monomer include hydroxyethyl acrylate, isophorone diisocyanate, antioxidant CA, acetone and catalyst in a weight ratio of 55:130:175:160:0.07, and the catalyst is Dibutyltin dilaurate...

Embodiment 3

[0072] A water-based resin emulsion, calculated in parts by weight, its raw material composition and content are as follows:

[0073]

[0074] Wherein, the acrylate monomer is a mixture of methyl acrylate, ethyl acrylate and butyl acrylate in a mass ratio of 10:2:5. The crosslinking monomer is a mixture selected from diethylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, and propoxylated trimethylolpropane triacrylate in a mass ratio of 6:0.5:0.5; The emulsifier is a mixture of sodium lauryl sulfate and nonylphenol polyoxyethylene ether in a mass ratio of 2:1; the initiator is ammonium persulfate.

[0075] The raw materials of the functional acrylate monomer include hydroxyethyl acrylate, isophorone diisocyanate, antioxidant CA, acetone and catalyst in a weight ratio of 60:150:200:200:1, and the catalyst is Dibutyltin dilaurate.

[0076] The preparation method of above-mentioned a kind of aqueous resin emulsion, step is as follows:

[0077] 1) Put 150g...

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Abstract

The invention provides waterborne resin emulsion and a method for preparing the same. The waterborne resin emulsion is characterized by comprising, by weight, 20-60 parts of functional acrylate monomers, 100-150 parts of acrylate monomers, 1-10 parts of cross-linking monomers, 4-20 parts of emulsifiers, 0.3-1 part of initiators and 250-350 parts of deionized water. Raw materials for the functionalacrylate monomers include hydroxyethyl acrylate, isophorone diisocyanate, antioxidants CA, solvents and a catalyst, a weight ratio of the hydroxyethyl acrylate to the isophorone diisocyanate to the antioxidants CA to the solvents to the catalyst is 50-60:110-150:160-200:100-200:0.01-1, the solvents are mixtures of more than one or two types of acetone and ethyl acetate, and the catalyst is dibulytin dilaurate. The waterborne resin emulsion and the method have the advantages that the waterborne resin emulsion is good in film-forming property and wide in damping temperature range, and can be widely used for vibration attenuation and noise reduction for aircrafts, ships, buildings, transportation and diversified machinery, and good high and low-temperature damping effects can be realized.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an aqueous resin emulsion and a preparation method thereof. Background technique [0002] Organic polymer damping coating is a special functional coating with vibration reduction, noise reduction and certain sealing performance, which can be widely used in vibration reduction and noise reduction of aircraft, ships and various machinery. Nowadays, the damping coatings commonly used to control the noise environment in the car are represented by asphalt, neoprene rubber and nitrile rubber water-based coatings, but they are easy to burn, require high ambient temperature, poor adhesion to substrates, and production. Disadvantages such as complicated process and high cost are not convenient for mass production and use. Among the damping coatings, water-based acrylic damping coatings have broad application prospects because of their excellent damping properties, e...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F222/20C08F220/36C08F283/01
CPCC08F220/14C08F283/01C08F220/1804C08F222/1006C08F222/102C08F220/36C08F220/18C08F220/1808C08F222/1025C08F222/103
Inventor 张英强娄静洁单昌礼李烨万通王淼李美佳范思达任泽钰宁闯王欣宇
Owner SHANGHAI INST OF TECH
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