Safe and environment-friendly waterborne antibacterial adhesive with high performance and preparation method thereof

A safe, environmentally friendly and high-performance technology, applied in the preparation of high-performance waterborne polyurethane antibacterial adhesives, in the field of waterborne polyurethane antibacterial adhesives, can solve problems such as unsafe, poor chemical stability, secondary pollution, etc., to expand the scope of application and improve antibacterial properties Effect

Inactive Publication Date: 2018-08-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial materials have been used for a long time and have strong bactericidal effect, but they have poor chemical stability, are not safe, are prone to drug resistance and secondary pollution caused by decomposition products, etc.

Method used

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  • Safe and environment-friendly waterborne antibacterial adhesive with high performance and preparation method thereof
  • Safe and environment-friendly waterborne antibacterial adhesive with high performance and preparation method thereof
  • Safe and environment-friendly waterborne antibacterial adhesive with high performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Synthesis of Gemini quaternary ammonium salt

[0049]

[0050] According to the above ratio, 10g of octadecyldimethylamine and concentrated hydrochloric acid were added to a four-necked flask equipped with a condenser, a thermometer, and an electric stirrer, heated to 60°C, and reacted for 6h at a speed of 200rpm, and then poured into it Add 10 bromoepoxybutane and 15g dichloroethane, continue to maintain reflux at 60°C for 6h, cool to room temperature, remove the dichloroethane, and obtain octadecyl hydroxybutyl Gemini quaternary ammonium salt.

[0051] (2) Preparation of quaternized montmorillonite

[0052]

[0053] 10gG octadecyl hydroxybutyl emini quaternary ammonium salt is uniformly dispersed in 90g mass fraction and is formulated into the octadecyl hydroxy butyl Gemini quaternary ammonium salt solution that mass fraction is 10% in the ethanol aqueous solution of 50%; Then to 10g Add 90g of deionized water to the sodium-based montmorillonite with a part...

Embodiment 2

[0062] (1) Synthesis of Gemini quaternary ammonium salt

[0063]

[0064] According to the above ratio, 10g of octadecyldimethylamine and concentrated hydrochloric acid were added to a four-necked flask equipped with a condenser, a thermometer, and an electric stirrer, heated to 60°C, and reacted for 6h at a speed of 200rpm, and then poured into it Add 10 bromoepoxybutane and 15g dichloroethane, continue to maintain reflux at 60°C for 6h, cool to room temperature, remove the dichloroethane, and obtain octadecyl hydroxybutyl Gemini quaternary ammonium salt.

[0065] (2) Preparation of quaternized montmorillonite

[0066]

[0067] According to the above ratio, 10gG octadecyl hydroxybutyl emini quaternary ammonium salt is uniformly dispersed in 90g mass fraction of 50% ethanol aqueous solution and is formulated with a mass fraction of 10% octadecyl hydroxy butyl Gemini quaternary ammonium salt solution ; Then add 90g deionized water to 10g particle size of 500nm Na-based m...

Embodiment 3

[0076] (1) Synthesis of Gemini quaternary ammonium salt

[0077]

[0078] According to the above ratio, 10g of octadecyldimethylamine and concentrated hydrochloric acid were added to a four-necked flask equipped with a condenser, a thermometer, and an electric stirrer, heated to 60°C, and reacted for 6h at a speed of 200rpm, and then poured into it Add 10 bromoepoxybutane and 15g dichloroethane, continue to maintain reflux at 60°C for 6h, cool to room temperature, remove the dichloroethane, and obtain octadecyl hydroxybutyl Gemini quaternary ammonium salt.

[0079] (2) Preparation of quaternized montmorillonite

[0080]

[0081]

[0082] According to the above ratio, 10gG octadecyl hydroxybutyl emini quaternary ammonium salt is uniformly dispersed in 90g mass fraction of 50% ethanol aqueous solution and is formulated with a mass fraction of 10% octadecyl hydroxy butyl Gemini quaternary ammonium salt solution ; Then add 90g deionized water to 10g particle size of 500n...

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Abstract

The invention discloses a safe and environment-friendly waterborne antibacterial adhesive with high performance and a preparation method thereof. The method comprises the following steps: enabling polymer polyol, a micromolecular hydrophilic chain extender, isocyanate and a solvent to make polymerization reaction in the presence of a catalyst, thus obtaining a polyurethane prepolymer; adding a neutralizer into the polyurethane prepolymer for neutralizing, and then adding water for emulsification, thus obtaining a polyurethane ionomer; adding dispersion liquid of a silver-carrying nano-clay material into the obtained polyurethane ionomer, regulating a pH value to neutral, performing shearing dispersion under the action of a high-speed dispersion machine, and removing the solvent to obtain the waterborne polyurethane antibacterial adhesive with high performance. The waterborne polyurethane is adopted as a substrate, so damage caused by a volatile organic compound (VOC) can be effectivelyavoided to obtain the safe and environment-friendly waterborne polyurethane adhesive with high performance, and the adhesive has the advantages of being safe and environmentally friendly, and free ofVOC; the mechanical property, thermal stability and antibacterial property of the obtained material far exceed that of similar modified waterborne polyurethane.

Description

technical field [0001] The invention relates to a water-based polyurethane antibacterial adhesive, in particular to a preparation method of a safe and environment-friendly high-performance water-based polyurethane antibacterial adhesive, which belongs to the technical field of organic chemicals. Background technique [0002] With the improvement of environmental protection regulations in various countries and the enhancement of people's awareness of environmental protection, the emission of volatile organic compounds and harmful air pollutants in traditional solvent-based adhesives has been increasingly restricted. The development of low-pollution, high-performance, multi-functional Environmentally friendly water-based adhesives have become the main direction of adhesive technology development. Water-based polyurethane has excellent flexibility, abrasion resistance, adhesion and chemical resistance, and has been used as bonding for wood, automobiles, floors, etc. Adhesives ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04C08G18/66C08G18/42C08G18/08C08G18/10C08G18/32C08G18/34
CPCC08G18/0823C08G18/10C08G18/42C08G18/6659C08K9/12C08K2003/0806C08K2201/011C09J11/04C09J175/06C08G18/3206C08G18/348
Inventor 傅和青谢金刚王寅李晓雅
Owner SOUTH CHINA UNIV OF TECH
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