A new large-scale and simple preparation method of a zeolite zinc-supported inorganic antibacterial agent

An inorganic antibacterial agent and a large-scale technology are applied in the field of simple preparation of novel large-scale zeolite zinc-loaded inorganic antibacterial agents, and can solve the problems of limited use range of antibacterial agents, influence on appearance, limited application scope, etc.

Active Publication Date: 2017-08-22
SANHE JINGNA ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN 1086270C discloses an antibacterial composition and its preparation method: a plastic antibacterial composition is synthesized with silver nitrate, zinc nitrate, zinc sulfate, zinc oxide, dispersant and zeolite as raw materials by controlling the proportion of components and certain steps agent, the production process is relatively simple, but the obtained product particles are relatively large, only less than about 30 μm, adding it to the product will affect the appearance, the application range is limited, and there is no high-temperature shaping of the silver component in the process, No special additives for protection, easy to change color when using silver ions
[0007] Chinese patent CN1283154C discloses a zinc-based antibacterial agent on a stilbite carrier: the antibacterial agent contains 5-8% zinc ion content by weight, has relatively low cost, strong antibacterial effect, and good long-lasting effect, but the preparation process is relatively complicated. , involves many links such as particle grinding, ion exchange, flocculation, liquid-solid separation, filter cake washing, drying, crushing, high-temperature roasting of carrier zeolite, among which the filter cake washing process will produce waste liquid pollution, and the melting point of zeolite is generally 800 ℃, the process of the present invention adopts 800-100 ℃ high-temperature roasting for 1-2.5h, and after cooling, some zeolite materials will definitely form large pieces, which need to be crushed before use
The antibacterial agent of the present invention has wide antibacterial spectrum, high efficiency, good heat resistance, discoloration resistance, and low cost, and is an ideal substitute for silver-loaded antibacterial agents. However, the solid-phase ion exchange in the production process is only carried out by simple solid-state grinding, and the ions Insufficient exchange conditions, low content of loaded zinc ions, and the distribution of antibacterial components in the system will be uniform and unstable. In addition, rare earth compounds are often accompanied by nuclear radiation elements, and the prepared antibacterial agents may have potential radiation hazards.
[0009] Chinese patent CN101884338B discloses an antibacterial agent containing three ions of silver, copper, and zinc: the antibacterial agent is based on staphite as a carrier, and is processed by sodium-type modification, antibacterial modification, and drying. The process seems very simple. Simple, but silver contains silver ions, the process lacks high-temperature setting links, and there is no special additive protection. When using antibacterial agents, it is easy to cause excessive silver ions to precipitate too quickly and change color, and the copper ions contained are often colored. Systemic antibacterial agents are limited in scope of use
[0010] Chinese patent CN102461561A discloses a preparation method of zeolite-loaded silver and its antibacterial agent: the antibacterial agent of this system contains 95% zeolite and 5% silver nitrate, the composition is simple, and the antibacterial efficiency is high, but the very high silver content will cause the cost to be very high High, and there is no high-temperature setting treatment in the process of processing, and no special additive protection, so the problem of discoloration will be more serious
The present invention intends to use the high-energy ball milling process to integrate powder grinding and ion loading, and use a relatively simple process to complete the preparation of zeolite zinc-loaded antimicrobial agent. No research literature has been reported yet.

Method used

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  • A new large-scale and simple preparation method of a zeolite zinc-supported inorganic antibacterial agent
  • A new large-scale and simple preparation method of a zeolite zinc-supported inorganic antibacterial agent
  • A new large-scale and simple preparation method of a zeolite zinc-supported inorganic antibacterial agent

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Effect test

Embodiment 1

[0087] Embodiment 1: Preparation of zeolite zinc-supported inorganic antibacterial agent of the present invention

[0088] Step A slurry preparation: add 200 parts by weight of water to the mixing tank produced by Qilian Power Equipment Co., Ltd., Yancheng City, Jiangsu Province, then add 100 parts by weight of zeolite while stirring, and continue to add 70 parts while stirring after the zeolite is added Zinc nitrate hexahydrate, and stirring at a temperature of 90-100° C. for 40 minutes to completely dissolve the zinc salt to obtain a mixed slurry for subsequent use;

[0089] Step B refining: Add the slurry obtained in step A and 0.5 parts by weight of sodium tripolyphosphate into the vertical production planetary ball mill produced by Changsha Tianchuang Powder Technology Co., Ltd., start the wet refining program, and ball mill for 2 hours. Can. The ball milling conditions are as follows: the ball milling pot and balls are made of zirconia; the ball diameters are about 8mm,...

Embodiment 2

[0092] Embodiment 2: Preparation of zeolite zinc-supported inorganic antibacterial agent of the present invention

[0093] Step A slurry preparation: add 250 parts by weight of water to the mixing tank produced by Qilian Power Equipment Co., Ltd., Yancheng City, Jiangsu Province, then add 120 parts by weight of zeolite while stirring, and continue to add 80 parts while stirring after the zeolite is added Zinc sulfate heptahydrate, and stirred at a temperature of 90-100°C for 50 minutes to completely dissolve the zinc salt to obtain a mixed slurry for subsequent use;

[0094] Step B refining: Add the slurry obtained in step A and 0.8 parts by weight of polymerized polyol into the vertical production planetary ball mill produced by Changsha Tianchuang Powder Technology Co., Ltd., start the wet refining program, and ball mill for 3 hours. . The ball milling conditions are as follows: the ball milling pot and balls are made of zirconia; the ball diameters are about 8mm, 5.5mm and...

Embodiment 3

[0097] Embodiment 3: Preparation of zeolite zinc-supported inorganic antibacterial agent of the present invention

[0098] Step A slurry preparation: add 200 parts by weight of water to the mixing tank produced by Qilian Power Equipment Co., Ltd., Yancheng City, Jiangsu Province, then add 100 parts by weight of zeolite while stirring, and continue to add 60 parts while stirring after the zeolite is added Zinc chloride, and stirring at a temperature of 90-100° C. for 40 minutes to completely dissolve the zinc salt to obtain a mixed slurry for subsequent use;

[0099] Step B refining: add the slurry obtained in step A and 0.5 parts by weight of triethanolamine into the vertical production planetary ball mill produced by Changsha Tianchuang Powder Technology Co., Ltd., start the wet refining program, and ball mill for 3 hours. The ball milling conditions are as follows: the ball milling pot and balls are made of zirconia; the ball diameters are about 8mm, 5.5mm and 3.9mm, large, ...

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Abstract

The invention relates to a novel large-scale simple preparation method of a zeolite zinc-loaded inorganic antibacterial agent. According to the method, high-concentration loading of zinc ions in a porous zeolite channel is finished in the ball milling process by utilizing planetary high-energy ball milling equipment, and the zinc content can be 9.0-18.0 percent according to a weight ratio. The high-energy ball milling process integrates powder particle grinding and metal ion exchange, so that the prepared zeolite zinc-loaded inorganic antibacterial agent particles are small in size, uniform in distribution and less prone to aggregation. The preparation method of the zeolite zinc-loaded inorganic antibacterial agent is simple in process, low in production cost and suitable for large-scale batch production, and raw materials are readily available. The zeolite zinc-loaded inorganic antibacterial agent prepared by the invention is good in antibacterial performance and safe to use, does not change color and can be widely applied to antibacterial functional treatment of products such as plastic, rubber, textiles and building materials.

Description

[0001] 【Technical field】 [0002] The invention relates to a zeolite zinc-loaded inorganic antibacterial agent. More specifically, the present invention relates to a simple preparation method of a novel large-scale zinc-supported inorganic antibacterial agent on zeolite. [0003] 【Background technique】 [0004] The ultra-fine powder inorganic antibacterial agents currently used in plastics, textiles, building materials and other materials in the market are generally carrier compounds such as zeolite, phosphate, soluble glass, and hydroxyapatite loaded with metal ions such as silver, copper, and zinc. Ionic antibacterial components have a slow-release effect due to the mesoporous or interlayer interaction of the carrier, so they are applied to plastics, textiles, building materials and other materials to show excellent long-term antibacterial properties. Among them, zeolite carrier antibacterial agent is an important branch of inorganic antibacterial agent. The metal ion antiba...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A01N59/16A01N25/08A01P1/00
Inventor李泽国姜虹娟张国利
OwnerSANHE JINGNA ENVIRONMENTAL PROTECTION TECH CO LTD