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Compound type uvioresistant antibacterial agent and preparation method thereof

An anti-ultraviolet, composite technology, applied in the field of preparation of anti-ultraviolet and antibacterial materials, can solve the problems of difficult preparation of nano-metallic silver particles, large amount of addition, easy agglomeration, etc., and achieves high anti-ultraviolet and antibacterial efficiency, easy to disperse, Easy-to-use effects

Inactive Publication Date: 2010-06-23
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to prepare nano-metallic silver particles and is easy to agglomerate. When used as a UV absorber, the amount of addition required is relatively large, resulting in waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The talcum powder with a particle size of 300 meshes was prepared by the following method to prepare composite anti-ultraviolet and antibacterial agents.

[0025] (1) Hydrofluoric acid was used to roughen the talc powder. The roughening conditions were: NaF 5g / L, HF (40%wt) 40mL / L, temperature 25°C, time 30min, loading capacity 100g / L. When coarsening, first dissolve NaF and HF in deionized water, and then add talc powder into the solution under mechanical stirring conditions. After coarsening, wash with deionized water three times, each time using centrifugal drying or negative pressure filtration;

[0026] (2) The acidic solution of stannous chloride is used to sensitize the talcum powder, and the sensitization condition is: SnCl 2 2H 2 O25g / L, HCl (37%wt) 50mL / L, absolute ethanol 300mL / L, temperature 25°C, time 10min, loading capacity 100g / L. When sensitizing, first dissolve stannous chloride in hydrochloric acid to obtain solution A, dissolve absolute ethanol in ...

Embodiment 2

[0030] The talcum powder with a particle size of 800 meshes was prepared by the following method to prepare composite anti-ultraviolet and antibacterial agents.

[0031] (1) Hydrofluoric acid was used to roughen the talc powder. The roughening conditions were: NaF 3g / L, HF (40%wt) 20mL / L, temperature 25°C, time 15min, loading 50g / L. When coarsening, first dissolve NaF and HF in deionized water, and then add talc powder into the solution under mechanical stirring conditions. After coarsening, wash with deionized water three times, each time using centrifugal drying or negative pressure filtration;

[0032] (2) The acidic solution of stannous chloride is used to sensitize the talcum powder, and the sensitization condition is: SnCl 2 2H 2 O15g / L, HCl (37%wt) 50mL / L, ethyl acetate 100mL / L, temperature 25°C, time 10min, loading 50g / L. When sensitizing, first dissolve stannous chloride in hydrochloric acid to obtain solution A, dissolve ethyl acetate in deionized water to obtain so...

Embodiment 3

[0036] Talcum powder with a particle size of 5000 meshes was prepared by the following method to prepare composite anti-ultraviolet and antibacterial agents.

[0037] (1) Hydrofluoric acid was used to roughen the talc powder. The roughening conditions were: NaF 2g / L, HF (40%wt) 10mL / L, temperature 25°C, time 5min, loading capacity 10g / L. When coarsening, first dissolve NaF and HF in deionized water, and then add talc powder into the solution under mechanical stirring conditions. After coarsening, wash with deionized water three times, each time using centrifugal drying or negative pressure filtration;

[0038] (2) The acidic solution of stannous chloride is used to sensitize the talcum powder, and the sensitization condition is: SnCl 2 2H 2 O10g / L, HCl (37%wt) 50mL / L, ethyl acetate 200mL / L, temperature 25°C, time 15min, loading 10g / L. When sensitizing, first dissolve stannous chloride in hydrochloric acid to obtain solution A, dissolve ethyl acetate in deionized water to ob...

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Abstract

The invention discloses a compound type uvioresistant antibacterial agent and a preparation method thereof. The preparation method for the compound type uvioresistant antibacterial agent comprises the following steps of: firstly, coarsening talc powder by adopting fluohydric acid; secondly, sensitizing the talc powder after coarsening; and finally, performing silver deposition reaction on the talc powder after sensitizing. Metallic state silver of which the weight is 5 to 10 percent of that of the talc powder and the thickness is 50 to 100 nanometers is deposited and coated on the surface of the talc powder. By using the ultraviolet shielding, absorbing and bacteriostatic functions of nano-state metallic silver, the preparation method prepares the compound type uvioresistant antibacterialagent which simultaneous has uvioresistant and antibacterial functions by depositing the nano silver on the surface of the talc powder. The compound type uvioresistant antibacterial agent has the advantages of simplicity, practicability, high uvioresistant antibacterial efficiency, wide application range, large-scale production and the like. The compound type uvioresistant antibacterial agent provided by the invention can be widely applied to the industries of textiles, plastics, coatings and the like, and has good economical and social benefits.

Description

technical field [0001] The invention relates to a preparation method of an anti-ultraviolet and antibacterial material, in particular to a composite anti-ultraviolet antibacterial agent and a preparation method thereof. Background technique [0002] Ultraviolet rays with a wavelength of 280-420nm can penetrate the atmosphere and reach the surface of the earth, causing the dissociation of C-H and C-C bonds and the breakage of molecular chains in organic materials such as plastics and textiles, and under the action of heat and oxygen, aging and performance of materials Attenuation, at the same time, ultraviolet rays can also cause damage to human tissues, especially the skin. The UV shielding of materials is mostly done by adding UV absorbers or UV shielding agents. There are three types of UV absorbers or shielding agents, one is organic, including methyl salicylate, benzophenone and its derivatives, benzotri azoles, etc.; one category is inorganic, including zinc oxide, sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P3/00
Inventor 张华鹏裴付宇陈建勇冯新星朱海霖崔旭
Owner ZHEJIANG SCI-TECH UNIV
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