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 us...

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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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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