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A kind of nano antibacterial and antifouling table and chair plastic particles and preparation method

A plastic particle and anti-fouling technology, applied in the field of functional plastics, can solve the problems of difficult to disinfect bacteria, easy leakage of inorganic antibacterial agents, and affect the durability of antibacterial, so as to improve the antibacterial effect, easy and quick start-up, and improve antibacterial performance. Effect

Active Publication Date: 2021-11-19
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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  • A kind of nano antibacterial and antifouling table and chair plastic particles and preparation method
  • A kind of nano antibacterial and antifouling table and chair plastic particles and preparation method

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 in particular relates to a nano antibacterial and antifouling table and chair plastic particle and a preparation method. Specifically: first, a nanocomposite antibacterial agent is prefabricated, and silver ions and zinc ions are loaded in the nanopores where sodium methyl silicate is hydrolyzed into silica gel, and treated with polytetrafluoroethylene emulsion, and sprayed by centrifugal spraying Dry and sand mill to obtain nano-composite antibacterial agent, nano-composite antibacterial agent has both antibacterial and hydrophobic self-cleaning properties; further composite granulation with polypropylene, high-density polyethylene, etc. to obtain a nano-antibacterial antifouling table and chair plastic particles ; In addition, zinc tungstate is compounded in the nanocomposite antibacterial agent; the present invention preferably aims at the basic performance requirements of plastic tables and chairs, and prepares nano antibacterial and antifouling table and chair plastic particles through reasonable formula coordination, and prepares antibacterial plastic products Finally, the nanocomposite antibacterial agent forms antibacterial and self-cleaning antifouling functions in the product; it has stable and long-term antibacterial properties.

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 Patents(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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