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Antibacterial functional material

A technology for functional materials and substrate surfaces, applied in the field of antibacterial functional materials, can solve the problems of conductive zinc oxide particles falling off, etc., and achieve good antibacterial effect

Inactive Publication Date: 2011-09-21
LIXIL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the conductive zinc oxide particles are easy to fall off from the surface of the substrate

Method used

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  • Antibacterial functional material
  • Antibacterial functional material
  • Antibacterial functional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Ga-doped zinc oxide (Ga content: 50 mg / g, average particle diameter: 30 nm) was used as the conductive zinc oxide, and No. 3 water glass was used as the inorganic binder. Ga-doped zinc oxide was dispersed in water, added to a water glass aqueous solution, and mixed to prepare a spray liquid. This spray liquid was sprayed on the surface of the glazed earthenware tile (100*100*5 mm) at normal temperature. After drying, burning was performed by heating at a temperature of 150° C., 200° C., 300° C., 400° C. or 700° C. in an air environment for 30 minutes.

[0039] Other main conditions are as follows.

[0040] Composition of the spray fluid

[0041] Sodium silicate: 2.0 wt% as a solid component

[0042] Conductive zinc oxide: 1wt%

[0043] Balance: water

[0044] Adhesion amount achieved by spraying: Zinc oxide is 10mg / 100cm 2

[0045] The antibacterial activity of the obtained antibacterial tile surface was evaluated according to JIS Z 2801. The results are shown i...

Embodiment 2

[0048] The same settings as in Example 1 were employed except that Al-doped zinc oxide (Al content: 50 mg / g, average particle diameter: 30 nm) was used as the conductive zinc oxide. The results are shown in Tables 1-3.

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Abstract

The present invention provides an antibaterial functional material which sufficiently exerts an antibacterial function of conductive zinc oxide. The antibaterial functional material is formed through sintering an inorganic adhesive which comprises zinc oxide particles that are doped with Al and / or Ga on a substrate surface. Sodium metasilicate is preferably used as the inorganic adhesive. More preferably, the zinc oxide which is doped with Ga is dispersed in water and is added into the sodium metasilicate solution for being mixed for preparing an injection solution. Furthermore the injection solution is injected on the substrate. After drying, the substrate is heated to 150-170 DEG C for being sintered.

Description

technical field [0001] The present invention relates to an antibacterial functional material formed by making the surface of substrates such as glass, glazed porcelain, and tile raw materials antibacterial, and in particular to an antibacterial functional material using conductive zinc oxide as an antibacterial agent. Background technique [0002] It is well known that conductive zinc oxide has antimicrobial properties as described in JP-A-2002-104823 and the like. Paragraph 0023 of this gazette describes zinc oxide doped with aluminum, indium, or tin as conductive zinc oxide. On the other hand, paragraphs 0041 to 0043 of this publication describe that conductive zinc oxide is fixed to a fibrous material, or that conductive zinc oxide is contained in a synthetic resin or paint. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2002-104823 Contents of the invention [0005] The problem to be solved by the invention [0006] When onl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C04B41/85
Inventor 山本圭介竹田道弘市野照男河村优希大桥哲二加藤嘉洋
Owner LIXIL CORP