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A kind of preparation method of hygroscopic ion-sensitive membrane

An ion-sensing, high-concentration technology, applied in the field of medical devices, can solve problems such as the reduction of the charge of the charged membrane and the discount of the treatment effect of the charged membrane, and achieve the effects of enhanced air permeability, high porosity, and mature technology

Active Publication Date: 2018-11-13
GUANGDONG TAIBAO MEDICAL SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this type of polymer material is an insulating substance, it does not have liquid absorption. When this type of material is applied to the skin, it will inevitably come into contact with sweat on the skin. Long-term contact will cause charging. The charge of the membrane decreases sharply, which greatly reduces the therapeutic effect of the charged membrane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a hygroscopic ion-sensitive membrane, comprising the following steps:

[0017] Step 1: Mix 100 parts of high-concentration polytetrafluoroethylene resin, 10 parts of fluororesin, 20 parts of sodium carboxymethylcellulose and 5 parts of liquid lubricant at a temperature of 25°C;

[0018] Step 2: using a compression molding machine to compress the resulting mixture to obtain a preform; using a T-shaped die to extrude the preform into a sheet; using a calender roll to further calender the obtained sheet to obtain a thickness of 200μm PTFE sheet shaped body;

[0019] Step 3: rolling the polytetrafluoroethylene sheet-shaped formed body obtained in step 2 through a heating roller, and the temperature of the heating roller is 100° C. to remove the liquid lubricant;

[0020] Step 4: Using a roller stretching machine, stretch the polytetrafluoroethylene sheet shaped body obtained in Step 3 four times in the longitudinal direction at 200°C; then, stretch i...

Embodiment 2

[0026] A method for preparing a hygroscopic ion-sensitive membrane, comprising the following steps:

[0027] Step 1: Mix 100 parts of high-concentration polytetrafluoroethylene resin, 15 parts of fluororesin, 25 parts of sodium carboxymethylcellulose and 7 parts of liquid lubricant at a temperature of 30°C;

[0028] Step 2: Using a compression molding machine to compress the resulting mixture to obtain a cylindrical preform; using a T-shaped die to extrude the preform into a sheet; using a calender roll to further calender the obtained sheet to obtain PTFE sheet shaped body with a thickness of 200μm~600μm;

[0029] Step 3: rolling the polytetrafluoroethylene sheet shaped body obtained in step 2 through a heating roller, and the temperature of the heating roller is 150° C. to remove the liquid lubricant;

[0030] Step 4: Using a roller stretching machine, stretch the polytetrafluoroethylene sheet-shaped formed body obtained in Step 3 four times in the longitudinal direction at...

Embodiment 3

[0036] A method for preparing a hygroscopic ion-sensitive membrane, comprising the following steps:

[0037] Step 1: Mix 100 parts of high-concentration polytetrafluoroethylene resin, 20 parts of fluororesin, 30 parts of sodium carboxymethylcellulose and 10 parts of liquid lubricant at a temperature of 40°C;

[0038] Step 2: Compress the resulting mixture with a compression molding machine to obtain a cylindrical preform, extrude the preform into a sheet using a T-shaped die, and further calender the obtained sheet with a calender roll to obtain a thickness 600μm polytetrafluoroethylene sheet shaped body;

[0039] Step 3: rolling the polytetrafluoroethylene sheet-shaped formed body obtained in step 2 through a heating roller, and the temperature of the heating roller is 200° C. to remove the liquid lubricant;

[0040] Step 4: Using a roller stretching machine, stretch the polytetrafluoroethylene sheet-shaped formed body obtained in Step 3 four times in the longitudinal direct...

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Abstract

The invention provides a preparation method of an ionic induction membrane capable of absorbing moisture. The preparation method comprises the following steps: main ingredients including high concentrations of teflon resin, fluororesin, carboxymethylcellulose sodium and a liquid lubricant undergo processes of mixing, compaction, compression-extrusion, extrusion, calendaring, drying, longitudinal stretching, transverse stretching, shaping and finished film, so as to form a teflon film with thickness being 20 microns and porosity being 75%; and a certain amount of charge is injected into the film by a charging technology, so as to obtain an ionic sensing film. A product produced by the above preparation method has stable performance, has good hygroscopicity and air permeability, and can be used in relieving various chronic and old pains such as lumbar and cervical vertebra pains caused by falling injury, sprain and strain, arthralgia, etc.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for preparing a hygroscopic ion-sensing membrane. Background technique [0002] Polytetrafluoroethylene, especially porous PTFE film electret, has been widely used as a bioelectret material due to its excellent biocompatibility, outstanding negative charge storage stability and good air permeability, such as As a clinical functional film for human trauma recovery, it has the functions of healing fractures, treating burn wounds, and relieving pain caused by muscle, bone and muscle injuries. However, since this type of polymer material is an insulating substance, it does not have liquid absorption. When this type of material is applied to the skin, it will inevitably come into contact with sweat on the skin. Long-term contact will cause charging. The electric charge of the membrane decreases sharply, so that the therapeutic effect of the charged membrane is greatl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/24A61L15/28A61L15/42A61N1/34
CPCA61L15/24A61L15/28A61L15/42A61N1/32C08L27/18C08L1/286
Inventor 卢亢陈锦涛卢钊浩何立彬
Owner GUANGDONG TAIBAO MEDICAL SCI TECH
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