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A kind of organosilicon modified acrylic acid micronano emulsion and preparation method thereof

A technology of micro-nano emulsion and acrylic acid is applied in the field of preparation of silicone-modified acrylic micro-nano emulsion, which can solve the problems of unstable reaction, unsatisfactory hydrophobicity, difficult emulsification, etc. Stability and hydrophobicity, the effect of reducing hydrophilic groups

Active Publication Date: 2018-03-27
HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the silicone-modified acrylate emulsion has the following defects: Most of the modified monomers use silane monomers or coupling agents to modify acrylates. Type silane coupling agent contains a hydrolyzable group Si-O-C, which will undergo hydrolysis and condensation to a certain extent during the emulsion polymerization process, resulting in excessive crosslinking between polymer molecules and resulting in unstable reaction, making it difficult to obtain stable high silicon content Silicone acrylic copolymer emulsion; Most of them use surfactants containing alkylphenol polyoxyethylene ether (APEO) as emulsifiers, which are poor in environmental protection. In addition, conventional emulsifiers are easy to desorb from polymer particles or migrate in latex films; most Relying on the low surface energy of silicone monomers to provide hydrophobicity, the hydrophobicity of the prepared product is not ideal, which limits the application of silicone-modified acrylic emulsions

Method used

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  • A kind of organosilicon modified acrylic acid micronano emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Preparation of organic nano-zinc hydroxide

[0040] Add the sodium hydroxide solution dropwise into the zinc nitrate solution, adjust the pH value to 6.5, stir at 5°C for 30 minutes, age for 3 hours, filter and dry to obtain nano-zinc hydroxide; mix the nano-zinc hydroxide with DBS solution, Mix with water, adjust the pH value to 8.5, heat to 120°C, hydrothermally react for 8 hours, repeatedly wash with distilled water after suction filtration, grind after drying, and pass through a 200-mesh sieve to obtain organic nano-zinc hydroxide;

[0041] (2) Preparation of composite nano-SiO2 particles

[0042] Mix 3 parts of nano-SiO2 particles with 10 parts of silsesquioxane containing carbon-carbon double bonds, stir at high speed for 30 minutes, and prepare nano-SiO2 particles whose surface is covered with silsesquioxane containing double bonds;

[0043] (3) At room temperature, add 15 parts of unsaturated acrylic acid monomer, 0.5 part of crosslinking monomer, 2 parts o...

Embodiment 2

[0047] (1) Preparation of organic nano-zinc hydroxide

[0048] Add the sodium hydroxide solution dropwise into the zinc nitrate solution, adjust the pH value to 6, stir at 8°C for 40 minutes, age for 4 hours, filter and dry to obtain nano-zinc hydroxide; mix the nano-zinc hydroxide with DBS solution, Mix with water, adjust the pH value to 9, heat to 110°C, hydrothermally react for 6 hours, repeatedly wash with distilled water after suction filtration, grind after drying, and pass through a 200-mesh sieve to obtain organic nano-zinc hydroxide;

[0049] (2) Preparation of composite nano-SiO2 particles

[0050] Mix 6 parts of nano-SiO2 particles with 15 parts of silsesquioxane containing carbon-carbon double bonds, stir at high speed for 30 minutes, and prepare nano-SiO2 particles whose surface is covered with silsesquioxane containing double bonds;

[0051] (3) At room temperature, add 20 parts of unsaturated acrylic acid monomer, 3 parts of crosslinking monomer, 5 parts of 2-a...

Embodiment 3

[0055] (1) Preparation of organic nano-zinc hydroxide

[0056] Add the sodium hydroxide solution dropwise into the zinc nitrate solution, adjust the pH value to 5.5, stir at 5°C for 60 minutes, age for 5 hours, filter and dry to obtain nano-zinc hydroxide; mix the nano-zinc hydroxide with DBS solution, Mix with water, adjust the pH value to 8, heat to 130°C, hydrothermally react for 8 hours, repeatedly wash with distilled water after suction filtration, grind after drying, and pass through a 200-mesh sieve to obtain organic nano-zinc hydroxide;

[0057] (2) Preparation of composite nano-SiO2 particles

[0058] Mix 5 parts of nano-SiO2 particles with 12 parts of silsesquioxane containing carbon-carbon double bonds, stir at high speed for 30 minutes, and prepare nano-SiO2 particles whose surface is covered with silsesquioxane containing double bonds;

[0059] (3) At room temperature, add 18 parts of unsaturated acrylic acid monomer, 2 parts of crosslinking monomer, 4 parts of 2...

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Abstract

The invention discloses a silicone-modified acrylic micro-nano emulsion and a preparation method thereof. Unsaturated acrylic monomers, silsesquioxanes containing carbon-carbon double bonds, cross-linking monomers and hydrophobic monomers are used as polymerization raw materials. Add nano-SiO2 particles and organic nano-zinc hydroxide as hydrophobic fillers, use 2-acrylamide amino-2-methylpropanesulfonic acid and maleic acid polyoxyethylene ether monoester carboxylate as emulsifier system, through The method of emulsion polymerization prepares a polymer emulsion with good stability, high and low temperature resistance, abrasion resistance, superhydrophobic performance and good mechanical properties, which can be widely used in coatings, adhesives, waterproofing agents and other fields. Good development prospects.

Description

technical field [0001] The invention relates to a preparation method of a polymer emulsion, in particular to a preparation method of an organosilicon-modified acrylic acid micro-nano emulsion. Background technique [0002] Emulsion polymerization has the characteristics of low system viscosity, fast heat transfer, environmental protection and separation effect. Its products have been widely used in the fields of coatings, paints, adhesives, rubber and drug sustained-release capsule carriers. Acrylate emulsions have excellent weather resistance, film-forming properties and cohesiveness, and are widely used in coatings and adhesives, but at the same time, they have disadvantages such as poor water resistance, moisture permeability and stain resistance; organosiloxane The main chain is Si-O-Si bond, which has high flexibility, excellent high and low temperature resistance, weather resistance and water resistance and good air permeability. It is of great significance in theory ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/12C08F283/06C08F220/10C08F220/44C08F212/08C08F220/06C08F220/18C08F220/32C08F222/06C08F220/58C08F2/44C08K3/36C08K9/04C08K3/22
CPCC08F2/44C08F283/065C08F283/124C08K3/22C08K3/36C08K9/04C08K2003/2296C08K2201/011C08F220/1807C08F220/1803C08F220/1804C08F220/1808C08F220/325C08F220/1811C08F220/585
Inventor 周学军
Owner HUIZHOU CITY HUIYANG DISTRICT JIATAI PAINT CO LTD
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