Preparation process of high hydrophobic antibacterial polyurethane film

A technology of polyurethane film and preparation process, which is applied in rayon manufacturing, single-component synthetic polymer rayon, fiber chemical characteristics, etc., can solve the problems of shortened service life, weak antibacterial performance, poor hydrophobicity, etc., and achieve surface roughness The effect of increasing, excellent adsorption performance, and ensuring stability

Inactive Publication Date: 2020-08-14
王飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyurethane film has many excellent properties, but its texture is generally soft, and there are defects such as poor hydrophobicity and weak antibacterial performance. In some applications, the above shortcomings will lead to many problems such as poor appearance, weakened protection performance, and shortened service life.
Although its softness and hardness can also be affected by changing its crosslinking degree, etc., the overall performance of the polyurethane film is greatly affected in this process, and the method of modifying its surface is only for Surface modification has relatively little effect on other properties of the polyurethane film, so it is not conducive to expanding the application range of polyurethane

Method used

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  • Preparation process of high hydrophobic antibacterial polyurethane film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation process for a highly hydrophobic antibacterial polyurethane film, comprising the steps of:

[0026] The first step, weighing the following raw materials by weight: 100 parts of acetone, 30 parts of fluorine-containing alkyl polyether glycol, 1 part of monobutyltin oxide, 20 parts of diisocyanate, 0.5 part of 1,4-butanediol, 5 parts of KH550, 20 parts of dimethylformamide, 3 parts of antibacterial agent;

[0027] The second step is to mix acetone and fluorine-containing alkyl polyether diol evenly, then add the mixed catalyst, stir magnetically for 30 minutes, then heat in a water bath at 40°C, and add diisocyanate dropwise, and control the dropping time for 3 minutes. React for 2 hours, then add 1,4-butanediol, stir at a constant speed and react for 5 hours, then add KH550, raise the temperature to 60°C, and react for 4 hours to obtain fluorine-containing polyurethane;

[0028] Step 3: Add fluorine-containing polyurethane to dimethylformamide, heat in a w...

Embodiment 2

[0033] A preparation process for a highly hydrophobic antibacterial polyurethane film, comprising the steps of:

[0034] The first step, weighing the following raw materials in parts by weight: 105 parts of acetone, 34 parts of fluorine-containing alkyl polyether glycol, 1 part of monobutyltin oxide, 25 parts of diisocyanate, 1.0 part of 1,4-butanediol, 6 parts of KH550, 25 parts of dimethylformamide, 4 parts of antibacterial agent;

[0035] The second step is to mix acetone and fluorine-containing alkyl polyether diol evenly, then add the mixed catalyst, stir magnetically for 30 minutes, then heat in a water bath at 40°C, and add diisocyanate dropwise, and control the dropping time for 3 minutes. React for 2 hours, then add 1,4-butanediol, stir at a constant speed and react for 5 hours, then add KH550, raise the temperature to 60°C, and react for 4 hours to obtain fluorine-containing polyurethane;

[0036]Step 3: Add fluorine-containing polyurethane to dimethylformamide, hea...

Embodiment 3

[0039] A preparation process for a highly hydrophobic antibacterial polyurethane film, comprising the steps of:

[0040] The first step, weighing the following raw materials by weight: 110 parts of acetone, 38 parts of fluorine-containing alkyl polyether glycol, 2 parts of monobutyltin oxide, 35 parts of diisocyanate, 1.2 parts of 1,4-butanediol, 8 parts of KH550, 40 parts of dimethylformamide, 4 parts of antibacterial agent;

[0041] The second step is to mix acetone and fluorine-containing alkyl polyether diol evenly, then add the mixed catalyst, stir magnetically for 30 minutes, then heat in a water bath at 40°C, and add diisocyanate dropwise, and control the dropping time for 3 minutes. React for 2 hours, then add 1,4-butanediol, stir at a constant speed and react for 5 hours, then add KH550, raise the temperature to 60°C, and react for 4 hours to obtain fluorine-containing polyurethane;

[0042] Step 3: Add fluorine-containing polyurethane to dimethylformamide, heat in a...

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Abstract

The invention discloses a preparation process of a high hydrophobic antibacterial polyurethane film. The high hydrophobic antibacterial polyurethane film is prepared by weighing the following raw materials: 100-120 parts by weight of acetone, 30-40 parts by weight of fluorine-containing alkyl polyether glycol, 1-2 parts by weight of mono-n-butyltin oxide, 20-40 parts by weight of diisocyanate, 0.5-1.5 parts by weight of a chain extender, 5-10 parts by weight of KH550, 20-45 parts by weight of dimethylformamide and 3-5 parts by weight of an antibacterial agent; and fibers of fiber films prepared by electrostatic spinning are superimposed in a random orientation mode in the spinning process to form a multi-level rough structure, the surface roughness of the fiber films is further increased,the hydrophobic angle is also increased, and the fiber films are given excellent hydrophobicity. The technical problem that use is affected due to the fact the film packaging materials are wet due tothe fact that the polyurethane has moisture permeability during use because the polyurethane is block polymer with a soft segment and a hard segment, and the hard segment can play a role in waterproofing and the soft segment has moisture permeability is solved.

Description

technical field [0001] The invention belongs to the technical field of polyurethane film preparation, in particular to a preparation process of a highly hydrophobic and antibacterial polyurethane film. Background technique [0002] Polyurethane is a block polymer composed of alternating soft and hard segments. The soft segment is in a highly elastic state at room temperature and can produce large tensile deformation, while the hard segment provides nodes for the elongation and deformation of the soft segment. The unique chemical structure of polyurethane makes it have high elasticity, high strength, wear resistance, heat resistance, chemical resistance and other characteristics, so it is widely used in medical and health care, special clothing, and industrial neighborhoods such as aircraft parts, safety bulletproof glass and so on. [0003] Polyurethane film has many excellent properties, but its texture is generally soft, and there are defects such as poor hydrophobicity an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4358D04H1/728C08G18/10C08G18/50C08G18/66C08G18/32D01F1/10D01F6/94
CPCC08G18/10C08G18/5015C08G18/6674D01F1/103D01F6/94D04H1/4358D04H1/728C08G18/3206
Inventor 王飞
Owner 王飞
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