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Preparation method of polyurethane material containing photocatalytic activity organic molecules

A polyurethane material and technology of photocatalytic activity, applied in the field of preparation of photocatalytic self-cleaning polyurethane materials, can solve the problems of poor compatibility, inability to play a catalytic role, easy falling off of inorganic particles, etc., and achieve good compatibility and good photocatalysis. Self-cleaning effect, efficient removal of pollutants

Inactive Publication Date: 2011-06-01
佛山市维晨科技有限公司
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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

preparation example Construction

[0028] A method for preparing a polyurethane material containing photocatalytically active organic molecules, the preparation method adopts the following steps:

[0029] A preparation of polyurethane solution

[0030] The selected polyurethane material refers to a polyurethane material mainly composed of polyisocyanate and oligomer polyol. The polyisocyanate in the polyurethane material is one of aliphatic and aromatic. Put the polyurethane in N,N-dimethylformamide or N,N-dimethylacetamide, and use mechanical stirring to completely dissolve the polyurethane material in the organic solvent to obtain a polyurethane with a solid content of 15-35%. solution.

[0031] Preparation of B modified solution

[0032] Dissolve the photocatalytically active organic molecules in the organic alcohol solution in a modified solution with a solid content of 5-20%. The photocatalytically active organic molecules can be anthraquinone-2-sodium sulfonate, anthraquinone-2,6-di One of sodium sulf...

Embodiment 1

[0039] The preparation steps are as follows: the polyurethane material is selected from the solution polyurethane TC-1925N with a solid content of 20% produced by Coating Chemical Co., Ltd.

[0040] A Place 61.5g TC-1925N in 20.5g N,N-dimethylformamide, and use mechanical stirring to completely dissolve TC-1925N to obtain a TC-1925N solution with a solid content of 15%.

[0041] B Dissolve 0.9 g of anthraquinone-2-sodium sulfonate in 17.1 g of n-propanol, and use mechanical stirring to completely dissolve the anthraquinone-2-sodium sulfonate to obtain a modified solution with a solid content of 5%.

[0042] C put 18g of the modified solution prepared by B into the 82g polyurethane solution prepared by A, use mechanical stirring to make the polyurethane solution and the modified solution miscible, and vacuumize and defoam in a vacuum drying oven until there are no bubbles in the mixed solution Finally, a blended modified polyurethane solution is obtained.

[0043] D Put the bl...

Embodiment 2

[0045] The preparation steps are as follows: the polyurethane material is a solution polyurethane WP-3015LE with a solid content of 30% produced by Coating Chemical Co., Ltd.

[0046] A Place 56.67g of WP-3015LE in 28.33g of N,N-dimethylacetamide, and use mechanical stirring to completely dissolve the polyurethane to obtain a WP-3015LE solution with a solid content of 20%.

[0047] B Dissolve 1.5g of anthraquinone-2,6-sodium disulfonate in 13.5g of n-butanol, and use mechanical stirring to completely dissolve anthraquinone-2,6-sodium disulfonate to obtain a solid content of 10%. modified solution.

[0048] C put 15g of the modified solution prepared by B into the 85g polyurethane solution prepared by A, use mechanical stirring to make the polyurethane solution and the modified solution miscible, and vacuumize and defoam in a vacuum drying oven until there are no bubbles in the mixed solution Finally, a blended modified polyurethane solution is obtained.

[0049] D Put the bl...

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Abstract

The invention relates to a preparation method of a polyurethane material containing photocatalytic activity organic molecules, which comprises the steps of: selecting a polyurethane material with isocyanate and oligomer polyol as main components, carrying out polyurethane solution blending, modifying solution preparing, polyurethane solution and modifying solution commixing and modifying, curing and forming on the polyurethane material, and modifying the polyurethane material to obtain the polyurethane material containing photocatalytic activity organic molecules. The preparation method of the polyurethane material containing photocatalytic activity organic molecules, provided by the invention, has the advantages of easiness of obtaining raw materials, low cost, simple process, convenience for operation control, easiness of realizing the industrialized production and no need of special equipment, and can be used for producing the photocatalytic self-cleaning polyurethane material on the conventional processing equipment. Because the photocatalytic self-cleaning polyurethane material prepared by using the preparation method provided by the invention can show stronger characteristic of decomposing organic pollutants under the irradiation of visible light, ultraviolet light and fluorescent light, has the characteristics of immediate pollutant removing, wide application range and energy saving, and can be widely applied to the fields, such as clothes, cases, decorations, vehicles, aviation, medical treatment and the like.

Description

technical field [0001] The invention belongs to the field of preparation and processing of functionalized polyurethane materials, in particular to a preparation method of photocatalyzed self-cleaning 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 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/06C08L75/08C08K5/42C08K5/07C08K5/1545C08J9/28
Inventor 王栋刘欣徐卫林崔卫钢王凯
Owner 佛山市维晨科技有限公司
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