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Antibacterial composite TPU (Thermoplastic Polyurethane) film and preparation method thereof

A film and antibacterial agent technology, applied in the field of high-efficiency antibacterial composite TPU film and its preparation, can solve the problems of comparable, difficult antibacterial effect, etc., and achieve the effects of low cost, easy control of reaction conditions, and strong antibacterial performance.

Active Publication Date: 2015-01-07
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Domestic research on antibacterial polyurethane is still in its infancy, only adding inorganic antibacterial agents when synthesizing polyurethane, and the antibacterial effect is difficult to match with foreign products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Accurately weigh 1 mol of polytetrahydrofuran (molecular weight: 1800) in a three-necked flask, heat and vacuum dehydrate, add 2.2 mol of MDI after cooling to about 30°C, keep stirring and raise the temperature to 60-70°C, maintain this temperature for 30min, add 1500ppm (Amount relative to 1 mol of polytetrahydrofuran) N-methyl-N-n-butyl-N,N dihydroxyethylammonium bromide, react for 10 minutes to obtain a prepolymer.

[0035] In the chain extension reaction stage, a chain extender ethylenediamine is added, and after the reaction solution becomes glycerol-like, 0.2 mol of a terminator diethylamine is added, and the reaction solution is cooled to 50° C. to obtain an antibacterial polyurethane stock solution.

[0036] Prepare according to the ratio of 60 parts of TPU particles, 20 parts of antibacterial agent, 0.1 part of antioxidant, and 2 parts of auxiliary agent, wherein the antibacterial agent is composed of chitosan, plane grass, tea polyphenols, red thistle, luteolin...

Embodiment 2

[0040] Accurately weigh 1 mol of polytetrahydrofuran (molecular weight 1800) in a three-necked flask, heat and vacuum dehydrate, add 2.2 mol of MDI after cooling to about 30°C, keep stirring and raise the temperature to 60-70°C, maintain this temperature for 30min, add 1200ppm (Amount relative to 1 mol of polytetrahydrofuran) N-methyl-N-n-octyl-N,N-dihydroxyethylammonium bromide, react for 10 minutes to obtain a prepolymer.

[0041] In the chain extension reaction stage, a chain extender ethylenediamine is added, and after the reaction solution becomes glycerol-like, 0.2 mol of a terminator diethylamine is added, and the reaction solution is cooled to 50° C. to obtain an antibacterial polyurethane stock solution.

[0042] Prepare according to the ratio of 65 parts of TPU particles, 22 parts of antibacterial agent, 0.2 part of antioxidant, and 2 parts of auxiliary agent, wherein the antibacterial agent consists of chitosan, plane grass, tea polyphenols, red thistle, luteolin Co...

Embodiment 3

[0046] Accurately weigh 1 mol of polytetrahydrofuran (molecular weight: 1800) in a three-necked flask, heat and vacuum dehydrate, add 2.2 mol of MDI after cooling to about 30°C, keep stirring and raise the temperature to 60-70°C, maintain this temperature for 30 minutes, add 1300ppm (Amount relative to 1 mol of polytetrahydrofuran) N-methyl-N-n-hexadecyl-N,N-dihydroxyethylammonium bromide, react for 10 minutes to obtain a prepolymer.

[0047]In the chain extension reaction stage, a chain extender ethylenediamine is added, and after the reaction solution becomes glycerol-like, 0.2 mol of a terminator diethylamine is added, and the reaction solution is cooled to 50° C. to obtain an antibacterial polyurethane stock solution.

[0048] Prepare according to the ratio of 70 parts of TPU particles, 25 parts of antibacterial agent, 0.2 part of antioxidant, and 1 part of auxiliary agent, wherein the antibacterial agent consists of chitosan, plane grass, tea polyphenols, red thistle, lute...

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PUM

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Abstract

The invention relates to an antibacterial composite TPU (Thermoplastic Polyurethane) film and a preparation method thereof. The TPU film comprises the following components in parts by weight: 60-80 parts of TPU particles, 20-30 parts of an antibacterial agent, 0.1-0.3 part of an antioxidant and 1-3 parts of an additive. The preparation method comprises the steps: (1) mixing the components to obtain a mixture according to the parts by weight; (2) plastifying the mixture by virtue of an extruder to form a semi-product; (3) filtering the semi-product by virtue of a filter and plastifying again; and (4) processing by virtue of a four-roller molding device so that the film is molded. The TPU film obtained by the preparation method disclosed by the invention has the advantage of good antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a TPU film and a preparation method thereof, in particular to a high-efficiency antibacterial composite TPU film and a preparation method thereof. Background technique [0002] Polyurethane is a polymer compound containing repeating structural units of urethane. In 1973, German chemist Professor Bayer first synthesized polyurethane resin by polyaddition reaction of isocyanate and polyol compound. After decades of development, polyurethane-based products are widely used in electromechanical, marine, coating, adhesive, fiber and other fields. [0003] Thermoplastic polyurethane synthetic materials, as a class of polyurethane, also have a wide range of applications. However, during the use and storage of the synthetic material product, under the condition of suitable temperature and humidity, the surface of the material is very easy to grow and reproduce bacteria. As a result, no...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K13/06C08K9/00C08K5/526C08K5/098C08G18/76C08G18/66C08G18/48C08G18/10A01N65/12A01P1/00
Inventor 王一良何健雄
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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