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Organic silicon-acrylic ester copolymer emulsion and preparation and application thereof

A technology of acrylate and butyl acrylate, which is applied in the field of polymers, can solve the problems of stain resistance, poor water resistance and adhesion, paint adhesion, weather resistance, water resistance and stain resistance, and achieve anti-sticking and staining Improved performance, simple and easy construction method, and the effect of overcoming high energy consumption

Inactive Publication Date: 2014-05-21
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there are few reports on the preparation of humidity-conditioning paints with silicone acrylate emulsions, and in the reported moisture-conditioning paints, most of the emulsions are pure acrylic and styrene-acrylic emulsions, although the humidity-conditioning paints prepared with these emulsions Better wet performance, but poor stain resistance, water resistance and adhesion
[0006] Chinese patents CN200810187001.6, CN200810017742.X, CN200810187002.0, CN200810187003.5 and CN201010233081.1 respectively disclose amphiphilic acrylic copolymer emulsion and potato starch graft emulsion, and apply them to water-sensitive respiratory coatings and functional Moisture-conditioning coatings, although they have good water absorption and humidity-conditioning properties, are still insufficient in terms of coating adhesion, weather resistance, water resistance and stain resistance

Method used

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  • Organic silicon-acrylic ester copolymer emulsion and preparation and application thereof
  • Organic silicon-acrylic ester copolymer emulsion and preparation and application thereof
  • Organic silicon-acrylic ester copolymer emulsion and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Preparation of silicone-acrylate copolymer emulsion

[0054] Raw material ratio: by weight

[0055] 1 part silicone 3-glycidylpropyltrimethoxysilane, 1 part methyl methacrylate, 1 part butyl acrylate, 1 part methacrylic acid, 1 part beta-hydroxypropyl methacrylate, bicarbonate 1 part of sodium, 1 part of potassium persulfate, 1 part of compound emulsifier (0.5 part of non-ionic emulsifier Tween-20, 0.5 part of ionic emulsifier sodium lauryl sulfate), 1 part of deionized water.

[0056] Process: add deionized water, compound emulsifier and 0.2 parts of silicone, 0.2 parts of methyl methacrylate, 0.2 parts of butyl acrylate, 0.2 parts of methacrylic acid, 0.2 parts of -β-hydroxypropyl methacrylate, stirred and pre-emulsified at 20°C for 100 minutes; raised the temperature to 60°C, then added the remaining mixed monomers and potassium persulfate dropwise into the flask, stirred The polymerization reaction was carried out for 6 hours to obtain a blue-phase white silic...

Embodiment 2

[0064] (1) Silicone-acrylate copolymer emulsion is prepared from the following raw materials and processes:

[0065] Raw material ratio: by weight

[0066] 10 parts of silicone methacrylate propyltrimethoxysilane, 20 parts of methyl methacrylate, 30 parts of butyl acrylate, 10 parts of acrylic acid, 20 parts of β-hydroxypropyl methacrylate, 5 parts of sodium bicarbonate , 5 parts of ammonium persulfate, 5 parts of compound emulsifier (1 part of non-ionic emulsifier Tween-20, 4 parts of ionic sodium lauryl sulfate), 30 parts of deionized water.

[0067] Process: add deionized water, compound emulsifier and 0.5 parts of silicone, 1 part of methyl methacrylate, 1.5 parts of butyl acrylate into a four-necked flask equipped with an electric stirrer, a thermometer, a condenser and a dropping funnel , 0.5 parts of acrylic acid, 1 part of methacrylic acid-β-hydroxypropyl ester, stirred and pre-emulsified at 70°C for 20 minutes; raised the temperature to 85°C, then added the remaining...

Embodiment 3

[0075] (1) Silicone-acrylate copolymer emulsion is prepared from the following raw materials and processes:

[0076] Raw material ratio: by weight

[0077] 30 parts of silicone aminopropyl triethoxysilane, 50 parts of methyl methacrylate, 20 parts of butyl acrylate, 30 parts of fumaric acid, 20 parts of β-hydroxypropyl methacrylate, 8 parts of sodium bicarbonate , 8 parts of potassium persulfate, 8 parts of compound emulsifier (1 part of non-ionic emulsifier Tween-20, 7 parts of ionic sodium lauryl sulfate), 40 parts of deionized water.

[0078] Process: Add deionized water, compound emulsifier, 3 parts of silicone, 5 parts of methyl methacrylate, and 2 parts of butyl acrylate into a four-necked flask equipped with an electric stirrer, a thermometer, a condenser tube and a dropping funnel , 3 parts of fumaric acid, 2 parts of methacrylate-β-hydroxypropyl methacrylate, stirred and pre-emulsified at 60°C for 40 minutes; raised the temperature to 80°C, then added the remaining m...

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Abstract

The invention provides organic silicon-acrylic ester copolymer emulsion, which utilizes organic silicon, methyl methacrylate, butyl acrylate, unsaturated alkyl acid and methacrylic acid-beta-hydroxypropyl ester as comonomers, utilizes deionized water as solvent, utilizes potassium peroxydisulfate or ammonium persulfate as an initiator and utilizes sodium bicarbonate as a neutralizer, and is prepared by polymerization in the presence of an emulsifying agent. The emulsion introduces the organic silicon into polyacrylate, the rigidness of a copolymer is improved to a certain extent, and cohesion of the copolymer emulsion is improved due to the introduction of a polar group. Interior wall humidity-conditioning paint prepared by the copolymer emulsion serving as a film former integrates multiple functions of decoration, humidity conditioning performance, permeability, insulation and anti-condensation performance, water resistance, alkali resistance, alkali-resistant performance and antibiosis, the paint film is durable and long in service life, and the organic silicon-acrylic ester copolymer emulsion serving as the interior wall humidity-conditioning paint has application prospects.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a silicone-acrylate copolymer emulsion and its preparation; the invention also relates to the use of the silicone-acrylate copolymer emulsion as a film-forming material in the preparation of indoor humidity-conditioning coatings application. Background technique [0002] Air humidity is an important environmental parameter closely related to human health and work and life. If it is too high or too low, it will affect people's normal life. "Heating Ventilation and Air Conditioning Design Specifications" GB50019-2003 stipulates that the standard value of indoor relative humidity is 40% to 60% for air-conditioned rooms in summer and 30% to 60% for heated rooms in winter, taking into account microbial growth, human disease, and item deterioration As well as various factors such as comfort, it is recognized that the best relative humidity range is 40% to 60%. Controlling indoor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/28C08F230/08C08F220/06C08F2/30C08F2/26C09D133/08C09D133/12C09D133/02C09D133/14C09D143/04
Inventor 王荣民王晓雯何玉凤王俊峰贺睦
Owner NORTHWEST NORMAL UNIVERSITY
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