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Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion and its application in the production of indoor humidity control coatings

A core-shell acrylic and ionomer technology, used in polymer technology and functional coatings to achieve excellent adhesion, high mechanical strength and thermal stability, and improve indoor humidity.

Inactive Publication Date: 2017-12-12
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to prepare interior wall coatings with excellent humidity control properties simply and cheaply still faces some problems, such as how to take into account good film formation and high mechanical strength, thermal stability, etc.

Method used

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  • Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion and its application in the production of indoor humidity control coatings
  • Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion and its application in the production of indoor humidity control coatings
  • Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion and its application in the production of indoor humidity control coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion

[0036] (1) Preparation of styrene-acrylic copolymer core emulsion: Add 30 parts of distilled water, 5 parts of compound emulsifier (1 part of OP-10, 4 parts of sodium lauryl sulfate) and 1 part of potassium persulfate into a three-necked flask , stirred at 80°C for 20 min; then 1 part of initiator solution, 5 parts of methacrylic acid, and 15 parts of styrene were added dropwise to the reaction system within 1.5 h, and the polymerization reaction was carried out under stirring for 1 h to obtain the styrene-acrylic copolymer core Lotion;

[0037] (2) Preparation of core-shell acrylic ionomer emulsion: A solution of 20 parts of methacrylic acid, 10 parts of methyl methacrylate, 5 parts of butyl acrylate and 3 parts of potassium persulfate was added dropwise to the above core within 1.5 h. in the emulsion, and then polymerized for 1 h to obtain a core-shell acrylic ionomer emulsion;

[0038](3) ...

Embodiment 2

[0042] 1. Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion

[0043] (1) Preparation of styrene-acrylic copolymer core emulsion: Add 25 parts of distilled water, 4 parts of compound emulsifier (2 parts of OP-10, 2 parts of sodium lauryl sulfate) and 0.5 parts of potassium persulfate into a three-necked flask , stirred at 90 ℃ for 20 min; then 1.5 parts of initiator solution, 5 parts of methacrylic acid, and 20 parts of styrene were added dropwise to the reaction system within 1.5 h, and the polymerization reaction was carried out under stirring for 1 h to obtain styrene-acrylic copolymer nuclei emulsion;

[0044] (2) Preparation of core-shell acrylic ionomer emulsion: a solution of 10 parts of methacrylic acid, 15 parts of methyl methacrylate, 10 parts of butyl acrylate and 2 parts of potassium persulfate was added dropwise to the above core within 2 h. in the emulsion, and then polymerized for 1 h to obtain a core-shell acrylic ionomer emulsion;

[004...

Embodiment 3

[0049] 1. Preparation of zinc ion crosslinked core-shell acrylic ionomer emulsion

[0050] (1) Preparation of styrene-acrylic copolymer core emulsion: Add 20 parts of distilled water, 5 parts of compound emulsifier (2.5 parts of OP-10, 2.5 parts of sodium lauryl sulfate) and 0.2 parts of potassium persulfate initiator solution into a three-necked flask , stirred at 80 ℃ for about 10 min, then 1.5 parts of potassium persulfate solution, 5 parts of methacrylic acid, and 10 parts of styrene were added dropwise to the reaction system within 1 h, and the polymerization reaction was carried out under stirring for 0.5 h to obtain Styrene-acrylic copolymer core emulsion;

[0051] (2) Preparation of core-shell acrylic ionomer emulsion: a solution of 15 parts of methacrylic acid, 20 parts of methyl methacrylate, 15 parts of butyl acrylate and 2.3 parts of potassium persulfate was added dropwise to the above core within 2 h. in the emulsion, and then polymerized for 1 h to obtain a core...

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Abstract

The invention discloses the preparation of a zinc ion cross-linked core-shell acrylic acid ionomer emulsion, which is mainly used for producing indoor humidity-regulating coatings and belongs to the field of polymer and functional coatings. The present invention uses carboxylate-containing methacrylic acid and styrene as hard core monomers, methacrylic acid, methyl methacrylate and butyl acrylate (soft monomers) as shell monomers, and zinc ions as crosslinking components. The zinc ion cross-linked core-shell acrylic ionomer emulsion has excellent adhesion, high mechanical strength and thermal stability, and the coating prepared by uniformly mixing with porous pigments and fillers has a loose structure and contains a large number of pores and voids inside, and water Vapor can pass freely, allowing the coating to effectively regulate indoor humidity. When the indoor humidity is high, the wall coating absorbs moisture in the air to reduce the indoor humidity; when the indoor humidity is low, a certain amount of moisture can be stored by spraying water on the wall coating, and the coating can be slowly and permanently improved. Indoor humidity.

Description

technical field [0001] The invention belongs to the field of polymer technology and functional coatings, and relates to the preparation of an acrylic-based emulsion, in particular to a method for preparing a zinc ion crosslinked core-shell acrylic ionomer emulsion; the invention also relates to the ionomer emulsion used as Application of film formers in the preparation of interior wall humidity control coatings. Background technique [0002] Indoor humidity has an important impact on people's work and life. According to the provisions of GB50019-2003 of the "Code for Design of Heating, Ventilation and Air Conditioning" and comprehensive consideration of factors such as microbial growth, item deterioration and comfort, the optimal indoor relative humidity should be controlled at 40% to 60%. Due to different geographical environment factors, the relative humidity in different regions varies greatly. As far as China is concerned, the south is relatively humid and the north is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F212/08C08F220/14C08F220/18C08J3/24C09D133/02C09D133/06C09D7/12
Inventor 王荣民翟文中李琛何玉凤钱文珍
Owner NORTHWEST NORMAL UNIVERSITY
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