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Manufacturing method for coating silicon rubber/liquid crystal cross linking membrane on bi-component hollow fiber

A manufacturing method and silicone rubber technology, applied in the field of biomedical engineering, can solve problems such as limitations and practical application limitations, and achieve the effects of improving integrity and uniformity, optimizing process conditions, and increasing curing speed

Inactive Publication Date: 2011-11-16
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above-mentioned problems in the process, the practical application is limited
[0005] These shortcomings of the hollow fiber one-component coating process limit the efforts to coat the silicone rubber crosslinking component to prepare hollow fiber composite membranes and use them in the manufacture of membrane oxygenators

Method used

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  • Manufacturing method for coating silicon rubber/liquid crystal cross linking membrane on bi-component hollow fiber
  • Manufacturing method for coating silicon rubber/liquid crystal cross linking membrane on bi-component hollow fiber
  • Manufacturing method for coating silicon rubber/liquid crystal cross linking membrane on bi-component hollow fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Experiment on the influence of coating solution concentration on film formation

[0022] Dissolve silicone rubber with a molar mass content of 5% to 10% vinyl and cholesteryl acrylate liquid crystal in tetrahydrofuran to form uniform solutions with concentrations of 2.5%, 5.0%, 7.5%, 10.0%, and 12.5%, respectively. Add the catalyst chloroplatinic acid solution, stir evenly to prepare a series of concentrations of component A; in the same above-mentioned concentration of 2.5%, 5.0%, 7.5%, 10.0% and 12.5% ​​of silicon rubber and cholesteryl ester liquid crystal of tetrahydrofuran In the solution, add the cross-linking agent hydrogen-containing silicone oil, stir evenly to prepare a series of concentrations of component B. After the thin plate and polyethersulfone hollow fiber are dipped through the component A and component B solutions respectively, the dipping time is 5s each; then the thin plate and the polyethersulfone hollow fiber are passed through a heating d...

Embodiment 2

[0027] Example 2 Experiment on the effect of curing temperature on film formation

[0028] Dissolve silicone rubber with a molar mass content of 5% to 10% vinyl and cholesteryl acrylate liquid crystal in tetrahydrofuran to form a homogeneous solution with a concentration of 5.0% by weight, add the catalyst chloroplatinic acid solution, and stir well Formulated into a series of concentration of component A; in the same above-mentioned concentration of 5.0% by weight of silicon rubber and cholesteryl acrylate liquid crystal tetrahydrofuran uniform solution, add hydrogen-containing silicone oil crosslinking agent, stir evenly to prepare a series Concentration of component B. After immersing the polypropylene hollow fibers through the component A and component B solutions successively, the silicone rubber is cross-linked and cured by a heating device to obtain a hollow fiber composite membrane coated with a uniform silicone rubber / liquid crystal cross-linked membrane. At the same ti...

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Abstract

The invention discloses a manufacturing method for coating a silicon rubber / liquid crystal cross linking membrane on bi-component hollow fiber. The method includes the following steps of: (1) dissolving silicon rubber / gadoleic acid cholesterol ester liquid crystal and adding catalyst to make component A; (2) dissolving silicon rubber / gadoleic acid cholesterol ester liquid crystal and adding crosslinker to make component B; and (3) dipping the hollow fiber first in the component A and then in the component B and obtaining a hollow fiber composite membrane coated with the silicon rubber / liquidcrystal cross linking membrane on surface through heating, cross linking and solidification. The two components can react at room temperature to be solidified. To shorten the solidification time, heating process is adopted, and the thickness of a coated membrane is controlled simultaneously when the completeness and uniformity of the coated membrane are improved, thus being in line with the technical requirements of industrial continuous production. Aiming at the defects that the usage period of coating liquid in a single component is short, the hollow fiber coated membrane clings mutually easily and the continuous operation is difficult to realize in technology and the like, the invention develops the bi-component method coating technology of hollow fiber and provides a preparation method of continuous operation for the surface coating of the hollow fiber membrane.

Description

Technical field [0001] The invention discloses a method for manufacturing a hollow fiber two-component coated silicone rubber / liquid crystal cross-linked membrane, which belongs to the field of biomedical engineering. The hollow fiber coated silicone rubber / liquid crystal cross-linked membrane can be used for membrane components of artificial lungs. manufacture. Background technique [0002] Hollow fiber is the most basic support material for membrane oxygenator (commonly known as artificial lung), and it is the membrane oxygenator to take O 2 , Exclude CO 2 The most important channel. Therefore, the selection of hollow fibers and the surface coating of hollow fiber membranes are the most important steps in the design and manufacture of membrane oxygenators. [0003] In the research and application of the membrane oxygenator, the membrane material coated on the surface of the hollow fiber plays the function of gas permeation and blood exchange. In the industrial coating productio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/643D06M13/224
Inventor 张子勇饶华新
Owner JINAN UNIVERSITY
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