A kind of permanent antibacterial polymer composite material and preparation method thereof

A composite material and polymer technology, applied in the direction of single-component synthetic polymer rayon, hollow filament manufacturing, textile and paper making, etc. Good electrochemical and thermal stability, good bactericidal and bacteriostatic effects, low vapor pressure

Active Publication Date: 2020-05-19
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term use, the polymer composite materials prepared by ordinary physical blending methods are prone to precipitation and other phenomena, resulting in the loss of antibacterial agents. Pollution

Method used

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  • A kind of permanent antibacterial polymer composite material and preparation method thereof
  • A kind of permanent antibacterial polymer composite material and preparation method thereof
  • A kind of permanent antibacterial polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Step (1) First, add 100g of PVDF and 0.001g of 1-vinyl-3-propyl imidazolium bromide into the melt blending equipment, the temperature is 200°C, the rotation speed is 20rpm / min, and the mixing time is 1min; When the rotating speed is 60rpm, the mixing time is 5min. Then the material is discharged to obtain a blend of PVDF and IL, which is recorded as a PVDF / IL (100 / 0.001) blend.

[0054] Step (2) Put the above-mentioned PVDF / IL (100 / 0.001) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 20 kGy.

[0055] Step (3) directly press-molding the grafted blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite membrane, the molding temperature is 200° C., the pressure is 15 MPa, the pressure is maintained for 2 minutes, and the thickness is 300 microns.

Embodiment 2

[0057] Step (1) First, add 100g of PVDF and 0.002g of 1-vinyl-3-propyl imidazolium bromide into the melt blending equipment, the temperature is 200°C, the rotation speed is 25rpm / min, and the mixing time is 1min; When the rotating speed is 50rpm, the mixing time is 6min. Then the material is discharged to obtain a blend of PVDF and IL, which is recorded as a PVDF / IL (100 / 0.002) blend.

[0058] Step (2) Put the above-mentioned PVDF / IL (100 / 0.002) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 25 kGy.

[0059] Step (3) directly press-molding the graft blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite film, the molding temperature is 190° C., the pressure is 15 MPa, the pressure is maintained for 2 minutes, and the thickness is 300 microns.

Embodiment 3

[0061] Step (1) First, add 100g of PVDF and 0.04g of 1-vinyl-3-propyl imidazolium bromide into the melt blending equipment, the temperature is 190°C, the rotation speed is 20rpm / min, and the mixing time is 1min; When the rotating speed is 60rpm, the mixing time is 5min. Then discharge, to obtain a blend of PVDF and IL, denoted as PVDF / IL (100 / 0.04) blend.

[0062] Step (2) Put the above-mentioned PVDF / IL (100 / 0.04) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 50 kGy.

[0063] Step (3) directly press-molding the grafted blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite membrane at a molding temperature of 195° C., a pressure of 10 MPa, a pressure hold of 2 minutes, and a thickness of 300 microns.

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Abstract

The invention discloses a permanent antibacterial polymer composite material and a preparation method thereof. According to the present invention, various materials such as polymer films, fibers, non-woven fabrics and the like are prepared by selecting different polymer molding technologies while an ion liquid is uniformly distributed and chemically bonded on the material surface, such that the material has good antibacterial effect; and the ion liquid and the polymer molecule are linked through the chemical bond, such that the loss of the ion liquid (antibacterial agent) due to migration andother causes during the long-term use can be avoided so as to maintain the permanent antibacterial performance.

Description

technical field [0001] The invention relates to a permanent antibacterial polymer composite material and a preparation method thereof, in particular to a polymer composite material uniformly distributed on the material surface and connected with ionic liquid through chemical bonds and a preparation method thereof. Background technique [0002] Polymer-based films, fibers and non-woven materials with antibacterial properties are widely used in the fields of hygiene, medical treatment and catering, and are generally made of polyester, polytetrafluoroethylene, polyvinylidene fluoride, polyurethane and other film materials. [0003] In order to solve the antibacterial effect and antibacterial durability of polymer composites, researchers have been developing various polymer composites. Ionic liquid (Ionic Liquid, IL) refers to a substance that is liquid at room temperature and composed of ions. When in contact with bacteria, it can destroy the cell structure, thereby playing a g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08F255/02C08F259/08C08F265/04C08F265/08C08F283/00C08F283/02C08F226/06C08F230/02C08F230/06C08F230/00C08F2/54D01F6/28D01F6/30D01F6/38D01F1/08
CPCC08F2/54C08F255/02C08F259/08C08F265/04C08F265/08C08F283/00C08F283/02C08L51/003D01F1/08D01F6/28D01F6/30D01F6/38C08F226/06C08F230/02C08F230/06C08F230/00
Inventor 李勇进管纪鹏
Owner HANGZHOU NORMAL UNIVERSITY
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