Glass silver-zinc-loaded antibacterial agent and preparation method thereof

A glass-loaded silver and antibacterial agent technology, applied in botany equipment and methods, biocides, disinfectants, etc., can solve problems such as easy loss, uneven silver loading, and difficulty in controlling the release rate of silver

Active Publication Date: 2021-08-31
晋大纳米科技(厦门)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a glass-loaded silver-zinc antimicrobial agent, using silver carbonate as an antibacterial source in order to overcome the problems of uneven silver loading, easy loss, and difficulty in controlling the silver release rate in the existing antibacterial glass powder. , using carbonate heating and decomposition to produce silver and carbon dioxide, under the action of gas, silver enters the molecular sieve pores and is fixed, and is released steadily in the subsequent application, so as to achieve the purpose of lasting antibacterial

Method used

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  • Glass silver-zinc-loaded antibacterial agent and preparation method thereof
  • Glass silver-zinc-loaded antibacterial agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of preparing glass-loaded silver-zinc antibacterial agent comprises:

[0031] Step 1: In parts by weight, 70 parts of phosphate, 5 parts of borate, 8 parts of molecular sieve, 5 parts of silver carbonate and 5 parts of zinc oxide are mixed, put into a mixer and mixed evenly to obtain a mixture;

[0032] Step 2: Put the mixture into the melting device, and the heating program is as follows: (1) 30°C to 300°C, 30min; heat preservation for 5-10min; (2) 300°C to 950°C, 120min; heat preservation for 30min; 950 to 1050°C ℃, keep warm for 60 minutes to obtain a melt, pour the melt into stainless steel or nickel-plating equipment, and cool the melt to obtain a glass body;

[0033] Step 3: Grinding the vitreous body to obtain the glass-loaded silver-zinc antibacterial agent, the particle size of the glass-loaded silver-zinc antibacterial agent is ≤10 μm.

[0034] The glass-loaded silver-zinc antibacterial agent is white powder, and the specific surface area...

Embodiment 2

[0036] Add the glass-loaded silver-zinc antibacterial agent prepared in Example 1 to polyethylene, and add 1 part of the glass-loaded silver-zinc antibacterial agent per 100 parts of polyethylene by weight. The addition method is to mix in the masterbatch, melt extrusion, and blow molding to form an antibacterial film.

[0037] The antibacterial film has no visible difference from the film formed by pure polyethylene in appearance, and has good transparency. The results of the antibacterial test are shown in Table 1.

[0038] Table 1 Antibacterial performance test results table

[0039]

[0040] It can be seen from Table 1 that the film has excellent antibacterial properties and can be used in food packaging, daily necessities and other fields. Since the glass-loaded silver-zinc antibacterial agent prepared by the present invention belongs to inorganic additives, it has high safety and heat resistance, and excellent stability, and can be added to various resins to play an ...

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Abstract

The invention relates to a glass silver-zinc-loaded antibacterial agent and a preparation method thereof. The preparation method of the glass silver-zinc-loaded antibacterial agent comprises the following steps: 1, mixing 60-70 parts by weight of phosphate, 1-10 parts by weight of borate, 5-10 parts by weight of molecular sieve and 1-10 parts by weight of silver carbonate, putting into a stirrer, and uniformly mixing to obtain a mixture; 2, adding the mixture into a melting device, heating to 950-1300 DEG C, calcining for 1-2 hours to obtain a melt, and cooling the melt to obtain a glass body; and 3, grinding the glass body to obtain the glass silver-zinc-loaded antibacterial agent. The glass silver-zinc-loaded antibacterial agent is high in safety, suitable for the fields of food, daily necessities and the like which are in close contact with human bodies, low in addition amount, free of influence on transparency of resin, endowed with lasting antibacterial property and capable of being added into various resins such as electrical products, furniture products, kitchen supplies, stationery and children toys.

Description

technical field [0001] The invention relates to functional materials, in particular to a glass-loaded silver-zinc antibacterial agent and a preparation method thereof. Background technique [0002] Food and daily necessities are in close contact with humans, so the development of food packaging materials with antibacterial effects and antibacterial daily necessities has a good application prospect. Existing antibacterial resins mainly form finished products with antibacterial effects during resin molding by mixing antibacterial agents into resin masterbatches. [0003] Antibacterial agents are generally divided into inorganic antibacterial agents, organic antibacterial agents and natural antibacterial agents. Among them, inorganic antibacterial agents use the antibacterial ability of silver, copper, zinc and other metals to absorb silver, copper, zinc and other metals through physical adsorption and ion exchange. (or its ions) are immobilized on the surface of porous materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/08A01P1/00C08K9/12C08K3/08C08L23/06C08J5/18
CPCA01N59/16A01N25/08C08K9/12C08K3/08C08J5/18C08K2003/0806C08J2323/06
Inventor 吴永鑫钟元杰康朝晖
Owner 晋大纳米科技(厦门)有限公司
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