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Organic silicon modified acrylic ester aqueous wood lacquer latex and synthesizing method thereof

A water-based wood paint, acrylic technology, applied in latex paint, coating and other directions, can solve the problems of flexibility, poor wear resistance, poor scratch resistance, etc., to achieve the effect of improving hardness

Inactive Publication Date: 2010-02-17
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scratch resistance of water-based acrylic paint film is not good, and there is a problem of high-temperature stickiness and low-temperature brittleness. The flexibility and wear resistance are also poor, and it is not easy to form a film at low temperature. range of application, it must be modified

Method used

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  • Organic silicon modified acrylic ester aqueous wood lacquer latex and synthesizing method thereof
  • Organic silicon modified acrylic ester aqueous wood lacquer latex and synthesizing method thereof
  • Organic silicon modified acrylic ester aqueous wood lacquer latex and synthesizing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw material formula of silicone modified acrylate water-based wood paint emulsion is shown in Table 1:

[0040] Table 1 Silicone-modified acrylate emulsion formula

[0041]

[0042] Its synthetic method is:

[0043] ① Preparation of nuclear emulsion: 0.8g of sodium dodecylbenzenesulfonate, NP-400.4g, 15g of deionized water, 22g of methyl methacrylate, 13g of styrene, 8g of butyl methacrylate, 1 Add 0.6 g of 6-hexanediol dimethacrylate into the pre-emulsification tank successively, stir for 15 min to obtain the pre-emulsion of the nuclear monomer; add 0.2 g of sodium dodecylbenzenesulfonate, carbonic acid Sodium hydrogen 0.4g, deionized water 46g, pre-emulsion 8g of nuclear monomer, add 15g ammonium persulfate aqueous solution (ammonium persulfate 0.75g is dissolved in 35g deionized water) when warming up to 50 ℃, and continue to heat up to 82 ±1°C, add the remaining nuclear monomer pre-emulsion and the remaining ammonium persulfate aqueous solution dropwise af...

Embodiment 2

[0050] Silicone-modified acrylate water-based wood paint emulsion raw material formula is shown in Table 2:

[0051] Table 2 Silicone-modified acrylate emulsion formula

[0052]

[0053] Its synthetic method is:

[0054] ① Preparation of nuclear emulsion: 1.0g sodium dodecylbenzenesulfonate, OP-100.6g, 19g deionized water, 25g methyl methacrylate, 18g styrene, 6g isooctyl acrylate, 1,6 - 0.5 g of hexanediol dimethacrylate was successively added to the pre-emulsification tank, and stirred for 15 minutes to obtain the pre-emulsion of the nuclear monomer; 0.9 g of sodium dodecylbenzenesulfonate and bicarbonate 0.4g of sodium, 46g of deionized water, 7.5g of the pre-emulsion of nuclear monomer, add 20g of ammonium persulfate aqueous solution (0.75g of ammonium persulfate is dissolved in 37g of deionized water) when warming up to 50 ℃, and continue to heat up to 82 ±1°C, add the remaining nuclear monomer pre-emulsion and the remaining ammonium persulfate aqueous solution dropw...

Embodiment 3

[0061] The raw material formula of silicone modified acrylate waterborne wood paint emulsion is shown in Table 3:

[0062] Table 3 Silicone-modified acrylate emulsion formula

[0063]

[0064] Its synthetic method is:

[0065] ① Preparation of nuclear emulsion: 0.5g of sodium lauryl sulfate, OP-100.6g, 20g of deionized water, 25g of methyl methacrylate, 10g of styrene, 18g of butyl methacrylate, 1,6- Add 0.8g of hexanediol dimethacrylate to the pre-emulsification tank in turn, and stir for 15 minutes to prepare the pre-emulsion of the nuclear monomer; add 0.5g of sodium lauryl sulfate, OP-100.5g to the polymerization tank in turn , sodium bicarbonate 0.4g, deionized water 56g, nuclear monomer pre-emulsion 8.5g, add 20g ammonium persulfate aqueous solution (dissolve ammonium persulfate 0.75g in 45g deionized water) when the temperature rises to 50°C, and continue Raise the temperature to 82±1°C, keep warm for 5 minutes, and add the remaining nuclear monomer pre-emulsion an...

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Abstract

The invention relates to an organic silicon modified acrylic ester aqueous wood lacquer latex and a synthesizing method thereof. The organic silicon modified acrylic ester latex has a three-layer nuclear shell structure latex particle with a hard core and a soft shell, can carry out self crosslinking at room temperature and has the particle diameter of 80-200nm, the solid content of 40-50 percentand the lowest film forming temperature of lower than 40 DEG C. The latex is prepared in such a way that a dicarbonyl compound containing double bonds and a (methyl) acrylic ester crosslinking monomercontaining double functionality or / and polyfunctionality, which can realize a room temperature crosslinking function are led in the polymerization process of acrylic ester nuclear shell latex, and anorganic silicon prepolymer is led in the outermost layer of the shell. The polymerization technology is simple and practical without gel generation in the polymerization process, and the storage stability of the latex can reach more than one year. The synthesized latex can generate an interpenetrating network structure and a self-layering structure during film formation. When the latex is appliedas aqueous wood lacquer, the pencil hardness of a lacquer film is larger than and equal to 2H, and the latex has favorable adhesive force, flexibility, scratch resistance, water resistance, oil resistance and fouling prevention.

Description

technical field [0001] The invention belongs to the technical field of water-based wood coatings, and in particular relates to a silicone-modified acrylate emulsion containing latex particles with a three-layer core-shell structure, capable of self-crosslinking at room temperature to form an interpenetrating network structure and a self-layered structure, and a synthesis method thereof. Background technique [0002] Today, energy conservation and emission reduction has become a social responsibility, and the wood coating industry is developing in a direction that meets ecological requirements. Health, environmental protection, and high efficiency will become the primary labels of future coating technology. [0003] The European Union proposed in the "EU Guidelines for Decorative Coatings (2007-2010)" that from January 1, 2007, the European Union will implement new VOC content limit standards to further significantly reduce the VOC value in paint, and the VOC content of water-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/06C09D5/02
Inventor 刘国军张桂霞刘素花刘俊龙
Owner DALIAN POLYTECHNIC UNIVERSITY
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