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Preparation method of antibacterial polyester material

A polyester material and particle technology, applied in the field of preparation of antibacterial polyester materials, can solve the problems of reducing antibacterial effect, uneven dispersion and high cost, and achieve the effect of good antibacterial effect, short process flow and stable size

Active Publication Date: 2014-02-12
ZHEJIANG YINYU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple to operate, but due to the relatively high viscosity of the polyester melt, the antibacterial agent is prone to agglomeration during the melt extrusion process, and the dispersion in the antibacterial polyester material is uneven, which has a great impact on subsequent processing and reduces Antibacterial effect, the more important issue is that the production method of antibacterial agent powder is relatively complicated when this blending method is used to prepare antibacterial materials: first, the antibacterial agent material is fully mixed with water or organic solvent, stirred evenly, and then sanded Machine crushing to form a slurry, and then drying to obtain ultra-fine powder of antibacterial agent, which will not only consume a lot of energy in the drying process, but also in the drying process, due to the change of surface tension, the particles will agglomerate and the particle size will become coarser
The antibacterial polyester material prepared by this blending method has a poor dispersion effect of the antibacterial agent powder in the polyester material, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare the antibacterial polyester material according to the following specific steps:

[0022] 1) After mixing cuprous oxide powder with a particle size of 20-50 microns and ethylene glycol, add it to a sand mill, and grind the cuprous oxide particles into a particle size of 20-100 nanometers to obtain a nano-oxidized A stable dispersion system composed of cuprous oxide particles and ethylene glycol; wherein, the weight ratio of cuprous oxide to ethylene glycol is 1:2; the cuprous oxide particles with a particle size of less than 80 nanometers in the nano cuprous oxide particles account for 90% of the total weight of cuprous.

[0023] 2) Add terephthalic acid to the dispersion system prepared in step 1). The weight ratio of the added terephthalic acid to the ethylene glycol in the dispersion system is 4:1. After esterification, Pre-condensation, final polycondensation, and in-situ polymerization to prepare a polyethylene terephthalate (PET) composite melt containing ...

Embodiment 2

[0026] Prepare the antibacterial polyester material according to the following specific steps:

[0027] 1) After mixing cuprous oxide powder with a particle size of 20-50 microns and ethylene glycol, add it to a sand mill, and crush the cuprous oxide into nano-cuprous oxide particles with a particle size of 20-100 nanometers, A slurry composed of nano cuprous oxide particles and ethylene glycol is prepared; wherein the weight ratio of cuprous oxide to ethylene glycol is 1:2; the cuprous oxide particles with a particle size of less than 80 nanometers in the nano cuprous oxide particles Copper particles account for 90% of the total weight of cuprous oxide.

[0028] 2) Add 2,6-naphthalene dicarboxylic acid to the slurry prepared in step 1), the weight ratio of the added 2,6-naphthalene dicarboxylic acid to ethylene glycol in the slurry is 6:1, after esterification, Pre-condensation and final polycondensation to produce a polyethylene naphthalate (PEN) composite melt containing n...

Embodiment 3

[0031] Prepare the antibacterial polyester material according to the following specific steps:

[0032] 1) After mixing cuprous oxide powder with a particle size of 20-50 microns and 1,4-butanediol, add it to a sand mill, and crush the cuprous oxide powder into a cuprous oxide powder with a particle size of 20-100 nanometers. Copper particles, forming a stable dispersion system composed of nano-cuprous oxide particles and polyols; wherein, the weight ratio of cuprous oxide to 1,4-butanediol is 1:1.5; the particle size of the nano-cuprous oxide particles Cuprous oxide particles smaller than 80 nanometers account for 90% of the total weight of cuprous oxide.

[0033] 2) Add terephthalic acid to the dispersion system prepared in step 1). The weight ratio of the added terephthalic acid to the 1,4-butanediol in the dispersion system is 3:1. , through esterification, pre-condensation, final polycondensation, and in-situ polymerization to obtain a polybutylene terephthalate (PBT) co...

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Abstract

The invention discloses a preparation method of an antibacterial polyester material. The preparation method of the antibacterial polyester material comprises the following concrete steps: 1) preparing a disperse system composed of nano cuprous oxide particles and polyalcohol; 2) adding polyacid into the disperse system prepared in the step (1), so as to prepare a polyester composite melt containing the nano cuprous oxide particles; 3) carrying out extruding, bracing, water cooling and pelletizing on the polyester composite melt containing the cuprous oxide particles, thus an antibacterial polyester material is obtained. The prepared antibacterial polyester material has the advantage of good, lasting and stable antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to a preparation method of antibacterial polyester materials. Background technique [0002] Antibacterial agents refer to a class of functional materials that can kill or inhibit the growth of microorganisms. There are three main types: organic antibacterial agents, inorganic antibacterial agents, and natural biological antibacterial agents. Inorganic antibacterial agents are widely used due to their advantages of high temperature resistance and not easy to decompose. At present, the most widely used inorganic antibacterial agents are simple silver and silver salts containing silver ions. In addition to silver-containing antibacterial agents, more and more attention has been paid to copper-based antibacterial materials, such as copper oxide, cuprous oxide, cuprous chloride, copper sulfate, etc., and copper oxide and cuprous oxide are more widely used. Antibact...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/189C08G63/78C08K3/22C08L67/02
Inventor 颜志勇胡英张葵花薛元汪志煌
Owner ZHEJIANG YINYU NEW MATERIAL CO LTD
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