Process for preparing room temperature self-crosslinking acrylic ester emulsion modified by inorganic nano particle

A technology of inorganic nanoparticles and acrylates, which can be used in coatings and other directions to solve the problems of poor emulsion performance and poor stability.

Inactive Publication Date: 2007-02-07
东莞市才智坊新材料有限公司
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Problems solved by technology

Therefore, the stability of the nano-modified emulsion obtained by blending is generally not very good, and the

Method used

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  • Process for preparing room temperature self-crosslinking acrylic ester emulsion modified by inorganic nano particle
  • Process for preparing room temperature self-crosslinking acrylic ester emulsion modified by inorganic nano particle
  • Process for preparing room temperature self-crosslinking acrylic ester emulsion modified by inorganic nano particle

Examples

Experimental program
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Embodiment 1

[0089] (1) Preparation method of surface modified nano-silica (1)

[0090] Add a mixed solution of ammonia water (4.1mL), ethanol (280mL) and water (32mL) into a 1000mL three-necked reactor equipped with a stirrer, a condenser and a dropping funnel, and add tetraethyl orthosilicate ( 100mL) and ethanol mixed solution (200mL). Under stirring at room temperature, slowly drop the mixed solution of tetraethyl orthosilicate and ethanol in the dropping funnel into the reaction kettle, after 12 hours, continue to stir for 12 hours to obtain nano-silica dispersion with blue light. liquid (nano silica particle size is about 80nm).

[0091] A mixed solution of methacryloxypropyltrimethoxysiloxane (MPS) (10 mL) and ethanol (50 mL) was slowly added dropwise to the above-mentioned nano-silica dispersion (MPS / nano-2 Silicon oxide=1:10 (molar ratio)), and then continue to stir for 12 hours, and distill most of the ethanol under reduced pressure to obtain nano-silica with unsaturated ...

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Abstract

the invention discloses a preparing method of modified indoor temperature self-cross-linking acrylate emulsion of inorganic nanometer particle in the macromolecular synthetic manufacturing industry, which comprises the following steps: (1) adopting ethyl silicic acid; preparing different grains and contents of nanometer silica particle; hydrolyzing under catalyst with unsaturated double-bond siloxane; condensing with silicon hydroxyl group of nanometer silica surface; obtaining nanometer silica with unsaturated double-bond; (2) diffusing the material in the emulsifier; blending with acrylic ester and polymeric monomer; obtaining self-cross-linking acrylate emulsion; (3) adding cross linker in the self-cross-linking acrylate emulsion to obtain the product.

Description

【Technical field】: [0001] The invention is an organic polymer synthetic resin, which is suitable for the decoration and anticorrosion of woodware, interior and exterior walls, metal plastics, and glass surfaces. Molecular synthesis manufacturing. 【technical background】: [0002] Emulsions obtained by free radical polymerization using (meth)acrylic acid and its esters as monomers are collectively referred to as acrylate emulsions. Acrylate emulsion has excellent gloss retention, color retention, weather resistance and other properties and is widely used as a matrix resin for coatings, adhesives, and fabric finishing agents. However, most acrylate emulsions are thermoplastic, with poor water resistance, solvent resistance, and pollution resistance, and there are problems such as insufficient strength, toughness, hardness, and wear resistance. In order to overcome the above-mentioned problems of thermoplastic acrylate emulsions, some attempts have been made. An attempt that ...

Claims

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Application Information

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IPC IPC(8): C08F120/10C08F2/44C08F2/26C08K9/00C09D133/04C08K5/25C08K5/17
Inventor 张继德陈洪聂立波汤建新
Owner 东莞市才智坊新材料有限公司
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