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Organic sillicon modified acrylic ester/inorganic nano composite emulsion and its preparation

An acrylate and inorganic nano technology, which is applied in the field of organosilicon modified acrylate/inorganic nano composite emulsion and its preparation, can solve the problems of cumbersome operation process, limited improvement of coating performance and high production cost, and achieves enhanced interaction, Excellent tensile strength and improved stability

Inactive Publication Date: 2003-06-18
上海华实纳米材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanocomposite polymer materials are a rapidly developing new field in the field of material science. At present, there are two main methods for the application of nanoparticles in emulsion coatings. One is to disperse nanoparticles in traditional emulsion coatings to improve the performance of coatings. Due to the high surface energy of nanoparticles, the stability of nanocomposite coatings prepared by physical blending method is relatively poor, and the improvement of coating performance is very limited. Another method is to use inorganic nanoparticles as seeds for emulsion polymerization. Therefore, since most inorganic nanoparticles are strongly hydrophilic substances, it is very difficult to carry out emulsion polymerization, and the surface of inorganic nanoparticles must be hydrophobically modified.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh nano-SiO with an average particle size of 15nm 2 1.0g was added to 0.1g potassium persulfate, 0.5g OP-10, 5g 10% H 2 o 2 solution, in a mixed solution composed of 5g of 10% NaOH solution, stirred at high speed for 2 hours, added 2g of methacrylic acid, and stirred for 30. minutes. Add 43g of methyl methacrylate, stir evenly, prepare an inverse emulsion system, heat up to 65°C for inverse emulsion polymerization, react for 6 hours and then cool to 40°C, add 2g of sodium lauryl sulfate to the system, A mixed solution composed of 0.5g sodium carbonate, 5.5g OP-10 and 140g water was stirred at high speed for reverse phase, then added 52g butyl acrylate, 2g KH570, emulsified for 30 minutes, heated to 75°C, added 0.4g potassium persulfate Initiator dissolved in 10g of water, initiate the reaction, carry out conventional emulsion polymerization, heat preservation reaction for 3 hours, cool down to room temperature, neutralize with 1:1 (volume ratio) ammonia water, fil...

Embodiment 2

[0027] Weigh nano-TiO with an average particle size of 40nm 2 1.0g was added to 0.1g potassium persulfate, 0.5g OP-10, 5g 10% H 2 o 2 Solution, in a mixed solution composed of 5g of 10% NaOH solution, stir at high speed for 2 hours, let it stand overnight, add 2g of hydroxyethyl methacrylate, stir for 30 minutes, add 43g of methyl methacrylate, stir evenly, and prepare a reverse phase Emulsion system. The temperature was raised to 65° C., and 2 g of 1% sodium formaldehyde sulfoxylate solution was added to initiate the reaction to carry out inverse emulsion polymerization. After reacting for 6 hours, cool to 40°C, add a mixed solution consisting of 2g sodium lauryl sulfate, 0.5g sodium carbonate, 5.5g OP-10 and 140g water to the system, stir at high speed for reverse phase, and then add 52g of butyl acrylate and 5g of macromolecular silicon monomer containing double bonds were emulsified for 30 minutes. Raise the temperature to 75°C, add an initiator composed of 0.4g potas...

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PUM

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Abstract

A composite organosilicon modified acrylatel inorganic nano emulsion features that the nano-class inorganic phase (SiO2, TiO2, ZnO and CaCo3) is contained in the particles of organosilicon modified acrylate emulsion, and is prepared through reverse emulsion polymerizing and in-situ emulsion polymerizing. Its advnatages are high mechanical, self-cleaning and antistatic performance and high stability. It can be used for paint, adhesive, polishing agent and cement modifier.

Description

technical field [0001] The invention relates to a water-based paint, in particular to an organosilicon-modified acrylate / inorganic nanocomposite emulsion and a preparation method thereof. Background technique [0002] With the development of high-rise and large-scale modern buildings, people have higher and higher requirements for architectural coatings, especially the requirements for anti-aging, stain resistance and self-cleaning performance of coatings. For exterior wall decorations that are exposed to the outdoors for a long time, outdoor decorations that are difficult to repair, and high-rise buildings, it is hoped that the mechanical properties, anti-staining properties, anti-aging properties, self-cleaning properties and comprehensive properties of the coating will be the best. Silicone-modified acrylate emulsion coatings (silicon-acrylic emulsion coatings for short) can meet the needs in some aspects, but they have deficiencies in anti-agi...

Claims

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Application Information

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IPC IPC(8): C08F2/22C08F2/44C08L33/12
Inventor 杨慕杰刘玉阳黄德欢
Owner 上海华实纳米材料有限公司
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