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Preparation method of photocatalytic polyurethane material

A polyurethane material and photocatalytic technology, which is applied in the field of photocatalytic polyurethane material preparation, can solve the problems of easy falling off of inorganic particles, poor compatibility, and inability to play a catalytic role, and achieves the promotion of initiator reaction, improvement of firmness, good light The effect of catalytic performance

Inactive Publication Date: 2018-03-06
东莞市鑫益电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, nano-titanium dioxide has poor compatibility with polymers, the coated nano-titanium dioxide cannot play a catalytic role, and nano-scale titanium dioxide inorganic particles are easy to fall off. These problems have led to the inability of nano-titanium dioxide and other inorganic particles to achieve photocatalytic self-cleaning in the polyurethane field. function and industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of preparation method of photocatalytic polyurethane material is characterized in that: its steps are as follows:

[0040] Step 1, put the polyurethane material in N,N-dimethylacetamide, seal and ultrasonically react for 10 minutes until completely dissolved to form solution A;

[0041] Step 2, adding n-butyl titanate to absolute ethanol, mechanically stirring for 10 minutes, and then adding polyvinylpyrrolidone to form a dispersed alcohol solution;

[0042] Step 3, put the dispersed alcohol solution into the reactor for reflux reaction for 1 hour, ultrasonic reaction for 2 hours, and obtain the titanium dioxide coating solution after cooling;

[0043] Step 4, adding the initiator into the titanium dioxide coating solution, dispersing evenly, adding it dropwise to solution A, stirring evenly to obtain a mixed solution;

[0044] Step 5, putting the mixed solution into a microwave reactor, heating and microwave reaction for 3 hours, and treating at a constant temp...

Embodiment 2

[0055] A kind of preparation method of photocatalytic polyurethane material is characterized in that: its steps are as follows:

[0056] Step 1, put the polyurethane material in N,N-dimethylacetamide, seal and ultrasonically react for 15 minutes until completely dissolved to form solution A;

[0057] Step 2, adding n-butyl titanate to absolute ethanol, mechanically stirring for 15 minutes, and then adding polyvinylpyrrolidone to form a dispersed alcohol solution;

[0058] Step 3, put the dispersed alcohol solution into the reactor for reflux reaction for 3 hours, ultrasonic reaction for 4 hours, and obtain the titanium dioxide coating solution after cooling;

[0059] Step 4, adding the initiator into the titanium dioxide coating solution, dispersing evenly, adding it dropwise to solution A, stirring evenly to obtain a mixed solution;

[0060] Step 5, putting the mixed solution into a microwave reactor, heating and microwave reaction for 5 hours, and treating at a constant tem...

Embodiment 3

[0071] A kind of preparation method of photocatalytic polyurethane material is characterized in that: its steps are as follows:

[0072] Step 1, put the polyurethane material in N,N-dimethylacetamide, seal and ultrasonically react for 12 minutes until completely dissolved to form solution A;

[0073] Step 2, adding n-butyl titanate to absolute ethanol, mechanically stirring for 12 minutes, and then adding polyvinylpyrrolidone to form a dispersed alcohol solution;

[0074] Step 3, put the dispersed alcohol solution in the reactor for reflux reaction for 2 hours, ultrasonic reaction for 3 hours, and obtain the titanium dioxide coating solution after cooling;

[0075] Step 4, adding the initiator into the titanium dioxide coating solution, dispersing evenly, adding it dropwise to solution A, stirring evenly to obtain a mixed solution;

[0076] Step 5, putting the mixed solution into a microwave reactor, heating it for microwave reaction for 4 hours, and treating it at a constant...

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Abstract

Belonging to the technical field of polyurethane materials, the invention particularly relates to a preparation method of a photocatalytic polyurethane material. The method includes: dissolving n-butyl titanate in anhydrous ethanol containing polyvinylpyrrolidone, carrying out refluxing reaction and ultrasonic reaction to obtain a titanium dioxide wrapping liquid, and then performing mixing with an initiator, and adding the polyurethane material N, N-dimethylacetamide solution to obtain a mixed solution, and carrying out heating microwave reaction and constant temperature treatment to obtain amodified polyurethane solution, and finally carrying out ultrasonic reaction and reduced pressure distillation to obtain the modified polyurethane material. The photocatalytic polyurethane material prepared by the method provided by the invention fills up the blank of polyurethane in the photocatalytic self-cleaning functional field, realizes the compatibility of a polymer and nano-titanium dioxide, and shows good photocatalytic performance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a preparation method of photocatalytic polyurethane materials. Background technique [0002] Due to its excellent physical and chemical properties, polyurethane materials are favored by consumers. In daily life, polyurethane products are widely used in clothing, luggage, decoration, automobile, aviation and medical fields. In the process of use, polyurethane products will inevitably be invaded by organic stains, such as: various dyes, food and beverage stains, and various easy-to-growth bacteria, etc., and the washing and sterilization process of polyurethane is complicated and wastes energy. causing many troubles and troubles. With the deteriorating environment, especially the recent occurrence of major global pollution incidents, consumers have higher and higher requirements for polyurethane products, which has also prompted researchers to carry out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08J3/28
CPCC08G18/838C08J3/28C08J2375/04
Inventor 李蒙月
Owner 东莞市鑫益电子科技有限公司