Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof

A technology of zinc oxide nanocrystals and polyurethane-based flowers, which is applied in the field of antibacterial materials and its preparation, can solve the problems of inability to kill bacteria quickly, slow antibacterial effect, complex components, etc., and achieve repeatable and continuous antibacterial process and effect. The effect of strong antibacterial activity and simple preparation method

Inactive Publication Date: 2011-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of inorganic antibacterial agents are no drug resistance, good safety, and high heat resistance; the disadvantage is the delayed effect of antibacterial agents, which cannot kill bacteria quickly like organic antibacterial agents
Chinese patent 03117502.3 reports a zinc oxide whisker compound antibacterial agent composition, which has higher antibacterial activity, but the crystal lattice of the four-needle zinc oxide whisker is doped with other metal ions, and added nano Zinc oxide, nano-titanium oxide, sodium silicate carrier, etc., complex composition

Method used

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  • Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof
  • Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof
  • Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The group assignments are shown in Table 1.

[0040] (1) Preparation of flower cluster ZnO nanowhiskers

[0041] The preparation steps of the flower cluster zinc oxide nano whiskers (root diameter 200~500nm, length 2~3 μm) composed of nanorods used in Example 1 are as follows:

[0042] ①Add excess zinc oxide powder to 5M NaOH solution to make the solution supersaturated.

[0043] ② After the supersaturated solution is allowed to stand for stratification, take 40mL of the supernatant and add it into 500mL of distilled water under stirring to form a diluted solution.

[0044] ③Put the diluted solution into a closed container and heat the reaction at 90°C for 10 hours;

[0045] ④ Filter the product obtained by the reaction, wash it with deionized water until it is neutral, and then put it in an oven for drying.

[0046] (2) Preparation of water-based polyurethane.

[0047] ①The dried polyadipate-1,4-butylene glycol ester diol, isophorone diisocyanate (isophorone diisoc...

Embodiment 2

[0057] (1) Preparation of flower cluster ZnO nanowhiskers

[0058] The preparation steps of the flower cluster zinc oxide nano-whiskers used in the present embodiment are as follows:

[0059] ①Add excessive zinc oxide powder to 4M NaOH solution to make the solution supersaturated.

[0060] ② After the supersaturated solution is allowed to stand for stratification, take 50mL of the supernatant and add it into 500mL of distilled water under stirring to form a diluted solution.

[0061] ③Put the diluted solution into a closed container and heat the reaction at 70°C for 15 hours;

[0062] ④ Filter the product obtained by the reaction, wash it with deionized water until it is neutral, and then put it in an oven for drying.

[0063] (2) Preparation of waterborne polyurethane

[0064] ① The dried polyethylene glycol, toluene diisocyanate (the molar ratio of toluene diisocyanate to polyethylene glycol is 1.5:1) and 2,2-dimethylolpropionic acid (the amount is 1% of the weight of the...

Embodiment 3

[0074] (1) Preparation of flower cluster ZnO nanowhiskers

[0075] The preparation steps of the flower cluster zinc oxide nano-whiskers used in the present embodiment are as follows:

[0076] ①Add excess zinc oxide powder to 6M NaOH solution to make the solution supersaturated.

[0077] ② After the supersaturated solution is allowed to stand for stratification, take 33mL of the supernatant and add it into 500mL of distilled water under stirring to form a diluted solution.

[0078] ③Put the diluted solution into a closed container and heat the reaction at 150°C for 5 hours;

[0079] ④ Filter the product obtained by the reaction, wash it with deionized water until it is neutral, and then put it in an oven for drying.

[0080] (2) Preparation of waterborne polyurethane

[0081] ①The dried polyadipate-1,4-butylene glycol ester diol, isophorone diisocyanate (isophorone diisocyanate and polyadipate-1,4-butylene glycol ester The molar ratio of dihydric alcohol is 3:1) and 2,2-dim...

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Abstract

The invention relates to a WBPU base cluster-shaped zinc oxide nano-crystal whisker antibiosis composite material and a preparation method and application thereof. In terms of parts by weight, the composite material of the invention contains 100 parts by weight of WBPU substrate and 0.3-2 parts by weight of cluster-shaped zinc oxide nano-crystal whisker antibacterial agent which undergoes ultrasonic dispersion treatment for preparing the composite material by using the blending of an ultrasonic auxiliary solution. The invention has simple preparation method and small addition amount, overcomes the problem of the inferior antibiosis effect of pure zinc series antibacterial agent and has high-efficiency, broad-spectrum and lasting antibiosis effect, as well as safe application and easy processing; the prepared composite material can be used as either an antibiosis coating directly or the masterbatch of the inorganic nano-antibiosis material of a polymer base and is applicable to the fields of food packaging, construction material, textiles, sanitary articles, daily article, household appliances, communication material and the like.

Description

technical field [0001] The invention relates to an antibacterial material and its preparation method and application field, in particular to a water-based polyurethane-based flower-clustered zinc oxide nano-whisker antibacterial composite material and its preparation method and application. Background technique [0002] With the development of science and technology and the improvement of people's living standards, people's health awareness is constantly increasing, and people pay more attention to the health of daily necessities, especially food, and the cleanliness of the environment. However, in people's daily life environment, pathogenic microorganisms such as bacteria are ubiquitous, threatening human health. In the past ten years, global microbial disasters caused by pathogenic microorganisms and their variants have occurred frequently, from India's "O139 Vibrio cholerae" to Japan's "O157:H 7 Escherichia coli”, the British “mad cow disease virus” and other incidents, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K3/22C08J5/18
Inventor 张伟德马学勇
Owner SOUTH CHINA UNIV OF TECH
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