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Nano-antibacterial antifouling table and chair plastic particle and preparation method thereof

A plastic particle and antifouling technology, applied in the field of functional plastics, can solve the problems of difficult to disinfect bacteria, easy exudation of inorganic antibacterial agents, affecting antibacterial durability, etc. Effect

Active Publication Date: 2020-11-03
ZHEJIANG SENCHUAN FURNITURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, more often, it is difficult for loaded antibacterial agents to disinfect bacteria attached to plastic products in time
In order to make the antibacterial agent have a long-lasting antibacterial effect in plastics, inorganic antibacterial agents such as silver ions are loaded on ultrafine silica or titanium dioxide and added to plastics. This kind of physical blending is mainly used for inorganic antibacterial agents. The agent is easy to seep out and also affects the antibacterial durability

Method used

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  • Nano-antibacterial antifouling table and chair plastic particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] S1. Add sodium methyl silicate to water and disperse sodium methyl silicate in water through high-speed dispersion at 800rpm. While dispersing at high speed, gradually add citric acid, and continue to use test paper to test until the pH is 4, and continue to stir for 15 minutes. , to form a gel solution; the gel solution was left to stand for 2 hours to obtain a gel, then washed with deionized water and vacuum filtered to remove most of the water absorbed by the gel to obtain a semi-dry gel;

[0037] S2, 10kg of the semi-dried gel obtained in step S1, 3kg of zinc nitrate hexahydrate, 1kg of silver nitrate, and 30kg of deionized water are mixed and stirred evenly, and then 3kg of polytetrafluoroethylene emulsion with a solid content of 40% (wt) is added, After the dispersion is uniform, it is sent to the centrifugal spray dryer, and the dispersion liquid is dispersed and sprayed in the form of mist under the action of centrifugal force through the high-speed rotation of 2...

Embodiment 2

[0041] S1. Add sodium methyl silicate to water and disperse at a high speed of 1200rpm to make it difficult to disperse sodium methyl silicate in water. While dispersing at high speed, gradually add citric acid, and continue to use test paper to test until the pH is 5, and continue to stir After 15 minutes, a gel solution was formed; the gel solution was left to stand for 2 hours to obtain a gel product, and then washed with deionized water and vacuum filtered to remove most of the water absorbed by the gel to obtain a semi-dry gel product;

[0042] S2, 15kg of the semi-dry gel thing obtained in step S1, 5kg of zinc nitrate hexahydrate, 2kg of silver nitrate, and 50kg of deionized water are mixed and stirred evenly, and then 3kg of polytetrafluoroethylene emulsion with a solid content of 40% (wt) is added, After the dispersion is uniform, it is sent to the centrifugal spray dryer, and the dispersion liquid is dispersed and sprayed in the form of mist under the action of centrif...

Embodiment 3

[0046] S1. Add sodium methyl silicate to water and disperse at a high speed of 800rpm to make it difficult to disperse sodium methyl silicate in water. While dispersing at high speed, gradually add citric acid, and continue to use test paper to test until the pH is at 5, and continue to stir 10min to form a gel solution; let the gel solution stand for 1-2 hours to obtain a gel, then wash with deionized water and vacuum filter to remove most of the water absorbed by the gel to obtain a semi-dry gel;

[0047] S2, 12kg of the semi-dried gel obtained in step S1, 3kg of zinc nitrate hexahydrate, 3kg of silver nitrate, and 50kg of deionized water are mixed and stirred evenly, and then 3kg of polytetrafluoroethylene emulsion with a solid content of 40% (wt) is added, After the dispersion is uniform, it is sent to the centrifugal spray dryer, and the dispersion liquid is dispersed and sprayed in the form of mist under the action of centrifugal force through the high-speed rotation of 2...

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Abstract

The invention belongs to the technical field of functional plastics, and particularly relates to a nano-antibacterial antifouling table and chair plastic particle and a preparation method thereof. Thepreparation method specifically comprises the following steps: firstly, prefabricating a nano composite antibacterial agent, loading silver ions and zinc ions in nano micropores of silica gel obtained by hydrolyzing sodium methyl silicate, treating the material by utilizing polytetrafluoroethylene emulsion, and producing the nano composite antibacterial agent by virtue of centrifugal spray dryingand a sand mill. The nano-composite antibacterial agent has antibacterial property and hydrophobic self-cleaning property at the same time and further can be compounded and granulated with polypropylene, high-density polyethylene and the like to obtain the nano antibacterial antifouling table and chair plastic particles. In addition, zinc tungstate is compounded in the nano composite antibacterial agent. The invention aims at the basic performance requirements of plastic tables and chairs, wherein the nano-antibacterial antifouling table and chair plastic particles are prepared through reasonable formula synergistic cooperation, and after an antibacterial plastic product is prepared, the nano-composite antibacterial agent forms antibacterial, self-cleaning and antifouling functions in theproduct, and the stable and long-acting antibacterial property is realized.

Description

technical field [0001] The invention belongs to the technical field of functional plastics, and in particular relates to a nano antibacterial and antifouling table and chair plastic particle and a preparation method. Background technique [0002] With the development of plastic functionalization, many furniture use plastic materials instead of wood materials and are widely used. In particular, tables and chairs in some public places, such as kindergarten tables, chairs and beds, are made of plastic materials; bus seats, hospital seats, etc. are mostly made of plastic materials. Plastic products play a very important role in people's daily life. [0003] However, due to frequent contact with people during use, plastic tables and chairs are prone to breed bacteria and become the source of disease transmission. Antibacterial plastic is currently a better means to solve the bacterial pollution of plastic tables and chairs. In order to prevent bacteria attached to the surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K13/06C08K9/12C08K9/08C08K3/28C08K3/24
CPCC08L23/12C08L2207/062C08L2205/035C08L2205/025C08K2201/011C08L23/06C08K13/06C08K9/12C08K9/08C08K3/28C08K3/24
Inventor 胡森川杨曦罗万象陈志益
Owner ZHEJIANG SENCHUAN FURNITURE
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