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Method for preparing lubrication coating on surface of medical polyvinyl chloride (PVC) material

A technology of polyvinyl chloride and lubricity, which is applied in the field of preparing lubricating coatings on the surface of medical polyvinyl chloride materials, which can solve the problems of easy falling off storage time, unstable modified coatings, and unsuitability for daily use, etc., to improve production The method and the production method are simple and easy to control, and the effect of improving the ratio of raw materials

Active Publication Date: 2014-12-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still some problems in the existing chemical modification, such as: cumbersome modification steps, expensive modification reagents, not suitable for daily use, short use time, unstable modified coating on the surface of the material: easy to fall off or store not long wait

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 10g of clean medical polyvinyl chloride catheter, apply medical polyurethane coating (medical polyurethane concentration is 15wt%, coating thickness is 150nm) under 30 ℃, 45% humidity conditions, dry, wash, vacuum dry. Activate in 40°C, 15mg / L, 400L / h ozone for 30min. 3 g of analytically pure acrylamide, 97 g of distilled water and 0.5 g of potassium persulfate were respectively added to a 200 ml three-necked flask. The activated medical polyvinyl chloride catheter was added into a three-necked flask, and stirred magnetically for 5 hours under an oil bath at 50° C. under nitrogen protection. After the reaction, the medical polyvinyl chloride catheter was cleaned in distilled water at 45°C for 12 hours, and the distilled water was replaced at least 10 times in the middle, then ultrasonically cleaned in ethanol for 30 minutes, and vacuum-dried at 60°C to constant weight.

[0032] When the prepared catheter is wet, the coefficient of dynamic friction decreases from 0...

Embodiment 2

[0034] Take 10g of clean medical polyvinyl chloride catheter, apply medical polyurethane coating (medical polyurethane concentration is 1wt%, coating thickness is 10nm) under 25 ℃, 60% humidity condition, dry, wash, vacuum dry. With a power of 50W and an oxygen flow rate of 50mL / min, plasma activation was performed for 15 minutes. 5 g of analytically pure N-vinylpyrrolidone and 95 g of distilled water were respectively added to a 200 ml three-necked flask. Add the activated medical polyvinyl chloride catheter into a three-necked flask, and stir it magnetically for 12 hours under an oil bath at 45° C. under nitrogen protection. After the reaction, the medical polyvinyl chloride catheter was cleaned in distilled water at 60°C for 24 hours, and the distilled water was replaced at least 15 times in the middle, then ultrasonically cleaned in ethanol for 1 hour, and vacuum-dried at 60°C to constant weight.

[0035] When the prepared catheter is wet, the coefficient of dynamic frict...

Embodiment 3

[0037] Take 10g of clean medical polyvinyl chloride catheter, apply medical polyurethane coating (medical polyurethane concentration is 30wt%, coating thickness is 100nm) under 35 ℃, 60% humidity conditions, dry, wash, vacuum dry. Activate in 70°C, 15mg / L, 200L / h ozone for 50min. Add 3g of analytically pure acrylic acid and 97g of distilled water into a 200ml three-necked flask. The activated medical polyvinyl chloride catheter was added into a three-necked flask, and stirred magnetically for 2 hours under the condition of nitrogen protection under an oil bath at 30°C. After the reaction, the medical polyvinyl chloride catheter was cleaned in distilled water at 30°C for 12 hours, and the distilled water was replaced at least 10 times, then ultrasonically cleaned in ethanol for 30 minutes, and vacuum-dried at 40°C to constant weight. Then activate in 70°C, 15mg / L, 200L / h ozone for 60min. 5 g of analytically pure acrylamide, 97 g of distilled water and 0.5 g of ammonium cerium...

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PUM

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Abstract

The invention discloses a method for preparing a lubrication coating on the surface of a medical polyvinyl chloride (PVC) material. The method comprises the following steps: 1, coating the surface of the clean medical PVC material with a medical PU (polyurethane) coating, airing, cleaning, and drying; 2, preprocessing the medical PVC material in the step 1, namely performing ozone and ion sputtering or ultraviolet irradiation; 3, adding the medical PVC material in the step 2 into a reaction solution, and performing graft reaction at 30-80 DEG C for 1-36 hours under the anaerobic condition, wherein the reaction solution includes a reaction solvent, a lubrication layer material and a reaction additive; 4, washing a graft reaction product and drying to obtain the lubrication coating. According to the method, the firmness and lubricity of the lubrication layer on the surface of the medical PVC material are greatly improved, the method is simple and easy to control, the preparation efficiency is improved, and the method is convenient for popularization and industrialized production.

Description

technical field [0001] The invention relates to the technical field of surface functionalization of medical polymer materials, in particular to a method for preparing a lubricating coating on the surface of medical polyvinyl chloride materials. Background technique [0002] Polyvinyl chloride (PVC) has been used as a medical material for many years. It has chemical corrosion resistance, strong resistance to oxidizing agents, reducing agents and strong acids, and is wear-resistant. It is easy to produce, safe to use, and low in cost. Such materials have good compatibility with intravenous fluids and blood, so they are widely used in various medical hoses, blood storage devices, dialysis accessories, surgical gloves, medical conditions, and artificial organs. [0003] According to the report, from 2006 to 2010, my country's imports of medical catheters increased from US$169 million to US$441 million, and exports increased from US$334 million to US$622 million. Large, reaching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/16C08J7/12C08J7/04A61L29/08C08L27/06
Inventor 周雪锋顾怡婧顾宁殷菊张天柱
Owner SOUTHEAST UNIV
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