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Method for preparing polyurethane adhesive used for building

A polyurethane adhesive, construction technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of poor antibacterial performance and inapplicability

Inactive Publication Date: 2016-03-02
SUZHOU GAIDE FINE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane adhesive has the disadvantage of poor antibacterial performance, and cannot be used in occasions with very high antibacterial requirements, such as sterile laboratories, drug storage rooms, etc.

Method used

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  • Method for preparing polyurethane adhesive used for building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of building polyurethane adhesive, its step is as follows:

[0027] (1) Add astragalus powder into water, boil and keep warm for 30 minutes, add absolute ethanol while stirring, the weight ratio of astragalus powder, water, and absolute ethanol is 1:10:3, stir for 15 minutes and then cool to room temperature, Move it into an ultrasonic cleaner for ultrasonic extraction for 25 minutes, and obtain a filtrate after filtration. Add the filter residue to an ethanol solution with a mass dispersion of 75%. The weight ratio of the filter residue to the ethanol solution is 1:2. Extract for 30 minutes to obtain the secondary filtrate, combine the primary filtrate and the secondary filtrate and then concentrate by rotary evaporation to obtain the astragalus extract with a concentration of 0.33 g / mL;

[0028] (2) Add the porous zinc phosphate with a weight ratio of 2:1 and the astragalus extract obtained in step (1) into an ultrasonic disperser, heat to 75°C ...

Embodiment 2

[0034] The preparation method of building polyurethane adhesive, its step is as follows:

[0035] (1) Add astragalus powder into water, boil and keep warm for 30 minutes, add absolute ethanol while stirring, the weight ratio of astragalus powder, water, and absolute ethanol is 1:10:3, stir for 15 minutes and then cool to room temperature, Move it into an ultrasonic cleaner for ultrasonic extraction for 25 minutes, and obtain a filtrate after filtration. Add the filter residue to an ethanol solution with a mass dispersion of 75%. The weight ratio of the filter residue to the ethanol solution is 1:2. Extract for 30 minutes to obtain the secondary filtrate, combine the primary filtrate and the secondary filtrate and then concentrate by rotary evaporation to obtain the astragalus extract with a concentration of 0.33 g / mL;

[0036] (2) Add the porous zinc phosphate with a weight ratio of 2:1 and the astragalus extract obtained in step (1) into an ultrasonic disperser, heat to 75°C ...

Embodiment 3

[0042] The preparation method of building polyurethane adhesive, its step is as follows:

[0043] (1) Add astragalus powder into water, boil and keep warm for 30 minutes, add absolute ethanol while stirring, the weight ratio of astragalus powder, water, and absolute ethanol is 1:10:3, stir for 15 minutes and then cool to room temperature, Move it into an ultrasonic cleaner for ultrasonic extraction for 25 minutes, and obtain a filtrate after filtration. Add the filter residue to an ethanol solution with a mass dispersion of 75%. The weight ratio of the filter residue to the ethanol solution is 1:2. Extract for 30 minutes to obtain the secondary filtrate, combine the primary filtrate and the secondary filtrate and then concentrate by rotary evaporation to obtain the astragalus extract with a concentration of 0.33 g / mL;

[0044] (2) Add the porous zinc phosphate with a weight ratio of 2:1 and the astragalus extract obtained in step (1) into an ultrasonic disperser, heat to 75°C ...

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PUM

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Abstract

The invention provides a method for preparing a polyurethane adhesive used for building. The method comprises the following steps: 1) adding radix astragali powder in water, boiling the material, insulating the material, adding absolute ethyl alcohol, stirring the materials, cooling the materials, performing ultrasonic extraction to obtain a primary filtrate, adding filter residue in an ethanol solution, performing ultrasonic extraction to obtain a secondary filtrate, merging the filtrates, performing rotary evaporation concentration to obtain a radix astragali extract product; 2) performing ultrasonic dispersion on porous zinc phosphate and the radix astragali extract product, drying the material to obtain an antibacterial filling material; 3) preparing an antibacterial solution, adding a stearic acid solution, stirring the materials, performing pumping filtration, washing and drying the product to obtain the modified antibacterial filling material; 4) blending polyol, a chain extender, a stabilizing agent, an antifoaming agent and the modified antibacterial filling material under vacuum, adding a catalyst and stirring a mixture under vacuum to obtain a component A; 5) stirring diisocyanate and an activator under vacuum to obtain a component B; and 6) uniformly mixing the component A and the component B to obtain the polyurethane adhesive used for building. The prepared adhesive has good antibacterial property.

Description

Technical field: [0001] The invention relates to a polyurethane adhesive, in particular to a preparation method of a polyurethane adhesive for construction. Background technique: [0002] There are many kinds of polyurethane adhesives. In a broad sense, polyurethane adhesives include sealants, adhesives and other types. According to the chemical properties of polyurethane adhesives, it can be divided into reactive type and non-reactive type. Partial type, radiation curing type, etc. are non-reactive adhesives. According to the curing mechanism, it can be divided into one-component solvent volatile type, one-component moisture curing type, two-component reactive type, hot melt type, light curing type, etc. According to the packaging form, it can be divided into two-component or even multi-component. According to whether it contains (organic) solvents, it can be divided into non-solution liquid adhesives, hot melt adhesives, solvent-based adhesives, water-based adhesives an...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/06C09J11/04
Inventor 李晓明
Owner SUZHOU GAIDE FINE MATERIALS CO LTD
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