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Nano-silver ion plastic antibacterial master batch and preparation method thereof

A nano-silver ion and antibacterial masterbatch technology, which is applied in the field of nano-silver ion plastic antibacterial masterbatch and its preparation, can solve the problems of yellowing and transparency of products, waste of nano-powder, and reduced antibacterial efficiency, and solve the problems of agglomeration and difficulty in dispersing , Improved dispersibility, high antibacterial efficiency

Pending Publication Date: 2020-06-02
见喜新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many reports on the development of nano-silver ion plastic antibacterial masterbatches with antibacterial functions. However, when the powdered nano-silver ion powder is melted and granulated with a plastic carrier to prepare antibacterial masterbatches, the fine nano-powders are easy to float and escape, causing waste and pollution. At the same time, the powdered silver ion material will inevitably contact the metal parts of the equipment during processing, and high temperature oxidation will occur due to friction, resulting in reduced antibacterial efficiency, yellowing of the product or decrease in transparency

Method used

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  • Nano-silver ion plastic antibacterial master batch and preparation method thereof
  • Nano-silver ion plastic antibacterial master batch and preparation method thereof
  • Nano-silver ion plastic antibacterial master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weigh 6700g of pre-solvent polyethylene glycol, 3300g of paraffin oil, 500g of dispersant triethanolamine, 500g of CYD-DY1800 hydroxyl branching agent, and 250g of zinc stearate stabilizer, put them into the autoclave, start stirring, and the time 30 minutes, drop into 5500g nano-silver ion powder then, continue to keep stirring for 20 minutes. The process settings are as follows: temperature 120°C, pressure 2.8Mp, stirring 150r / min, continuous stirring for 20 minutes to modify, release the pressure and cool down and keep stirring at a low speed for 30 minutes, reduce the pressure to normal pressure, cool to room temperature, and cool and discharge. Nano pre-dispersed silver paste;

[0036] (2) According to the mass ratio of 40:80, the nano pre-dispersed silver paste and plastic polyethylene 1I2A are plasticized and granulated through a 65-type parallel twin-screw extruder, and the pre-dispersed silver paste is injected into the twin-screw from the middle feeding po...

Embodiment 2

[0038] (1) Weigh 5000g of pre-solvent polyethylene glycol, 500g of dispersant triethanolamine, 500g of CYD-DY1800 hydroxyl branching agent, and 500g of zinc stearate stabilizer, put them into the autoclave, start stirring, stir for 30 minutes, and then Drop into 3500g nano-silver ion powder, continue to keep stirring for 10 minutes. The process settings are as follows: temperature 120°C, pressure 3Mp, stirring 50r / min, continuous stirring for 10 minutes to modify, release the pressure and cool down and keep stirring at a low speed for 30 minutes, reduce the pressure to normal pressure, cool to room temperature, and cool the material to obtain nano Pre-dispersed silver paste;

[0039] (2) According to the mass ratio of 20:80, the nano pre-dispersed silver paste and plastic polyethylene 1I2A are plasticized and granulated through a 65-type parallel twin-screw extruder, and the pre-dispersed silver paste is injected into the twin-screw from the middle feeding port to obtain Anti...

Embodiment 3

[0041] (1) Weigh 12000g of pre-solvent paraffin oil, 400g of dispersant triethanolamine, 600g of CYD-DY1800 hydroxyl branching agent, 600g of zinc stearate stabilizer, put them into the autoclave, start stirring, stir for 45 minutes, and then put 5000g Nano silver ion powder, continue to keep stirring for 30 minutes. The process settings are as follows: temperature 120°C, pressure 2.8Mp, stirring 150r / min, continuous stirring for 30 minutes to modify, release pressure and cool down and keep stirring at low speed for 30 minutes, reduce pressure to normal pressure, cool to room temperature, and cool and discharge. Nano pre-dispersed silver paste;

[0042] (2) According to the mass ratio of 30:70, the nanometer pre-dispersed silver paste and plastic styrene AS are plasticized and granulated through a 65-type parallel twin-screw extruder, and the pre-dispersed silver paste is injected into the twin-screw from the middle feeding port to obtain Antibacterial masterbatch for styrene...

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Abstract

The invention relates to a nano-silver ion plastic antibacterial master batch and a preparation method thereof. The nano-silver ion plastic antibacterial master batch comprises the following components by mass: 20-40 parts of a nano pre-dispersed silver paste and 60-80 parts of a plastic carrier; the nano pre-dispersed silver paste comprises: a pre-solvent, a dispersing agent, a branching agent, astabilizer and a nano-silver ion powder component; the mass ratio of the pre-solvent, the dispersing agent, the branching agent and the stabilizer is 20-60:2-5:2-5:1-5; and the nano-silver ion component accounts for 20-50% of the mass of the pre-dispersed silver paste. The invention further relates to a preparation method of the nano-silver ion plastic antibacterial master batch. The preparationmethod comprises a one-pot nano-silver paste preparation step and a melting granulation step. The prepared nano-silver ion antibacterial master batch is used for plastic products, and has the advantages of high antibacterial efficiency, uniform distribution, stability, high efficiency, convenient use and the like.

Description

technical field [0001] The invention relates to the technical field of polymer plastic functional master batches, in particular to a nano-silver ion plastic antibacterial master batch and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, plastic packaging, furniture products, fiber products, electrical components and other products need to have antibacterial functions. Nano-silver ions have attracted widespread attention because of their excellent broad-spectrum antibacterial activity and antibacterial efficiency. The main principle of silver ion antibacterial is that when nano-silver ions are distributed on the surface of the product, they can enter the cell wall of bacteria attached to the surface and react and combine with the cell enzymes that constitute the main component of the cell wall, destroying the cell wall structure and causing bacteria to die due to cell wall rupture. In addition, positively charged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L25/06C08L77/00C08L23/12C08K3/08C08J3/22
CPCC08J3/226C08K2003/0806C08K2201/011C08K2201/003C08J2423/06C08J2425/06C08J2477/00C08J2423/12
Inventor 李彦波李宗禹李丽波
Owner 见喜新材料股份有限公司
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