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Polytetrafluoroethylene tube ribbon coating preparation method and polytetrafluoroethylene tube

A technology of polytetrafluoroethylene tube and polytetrafluoroethylene, which is applied in the direction of coating, metal material coating process, ion implantation plating, etc., can solve the problem of non-transparent tubing, cumbersome tubing forming process, and the inability of endoscopic medical depth Accurate calibration and other issues to achieve good edge uniformity, ensure mechanical lateral stiffness and longitudinal tensile strength, and reduce the difficulty of coloring

Active Publication Date: 2019-06-28
青岛汉兴新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tube forming process is cumbersome. In order to ensure longitudinal rigidity and bending strength, this method can only prepare white PTFE tubes with longitudinal ribbons. The tubes are non-transparent, and the longitudinal position, especially the depth Accurate Calibration

Method used

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  • Polytetrafluoroethylene tube ribbon coating preparation method and polytetrafluoroethylene tube
  • Polytetrafluoroethylene tube ribbon coating preparation method and polytetrafluoroethylene tube
  • Polytetrafluoroethylene tube ribbon coating preparation method and polytetrafluoroethylene tube

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method for preparing a polytetrafluoroethylene tube ribbon coating, the preparation process steps comprising:

[0033] ①Preparation and treatment of PTFE pipe body.

[0034] The preparation method of the polytetrafluoroethylene pipe body is as follows: mixing and curing the polytetrafluoroethylene dispersion material and additives, extruding the polytetrafluoroethylene paste material, and molding and sintering. The molding and sintering process includes extruding polytetrafluoroethylene paste into a pipe mold, compacting it with a press, and sintering it in a sintering furnace at 360°C. The auxiliary agent is kerosene.

[0035] In this embodiment, the treatment method of the polytetrafluoroethylene pipe body adopts plasma surface treatment.

[0036] The plasma surface treatment method is as follows: a. put the polyvinyl chloride tube body into the plasma sputtering apparatus, b. evacuate the sputtering chamber to 0.5mbar, fill in the inert gas to the vacuum degree of...

Embodiment 2

[0053] The present embodiment and its comparative examples are carried out using the preparation method of Example 1. The difference is that the coating method of the ribbon pigment in this embodiment is the ring printing method, and

[0054] 2a The tube body adopts plasma surface treatment, and the water-based pigment is added with tannic acid modifier;

[0055] 2b (Comparative Example 2) The tube body is treated with plasma surface, and the water-based pigment does not add tannic acid modifier;

[0056] The process method of the ring printing method is: dip the inner wall of the ring brush head into the modified ribbon pigment, feed the polytetrafluoroethylene tube into the ring brush head, stick the inner bristles of the ring brush head to the outer wall of the tube, and spin coating. Then the Teflon tubing is sent out. Ring printing equipment has simple structure and high production efficiency. But inevitably, the circular printing method is affected by the circular brus...

Embodiment 3

[0058] This example and its comparative examples are carried out using the preparation method of Example 1. The difference is that the treatment method of the polytetrafluoroethylene pipe body of this example adopts acid etching surface treatment, and

[0059] 2c The pipe body is coated by the cover mold spraying method, and the water-based pigment is added with a tannic acid modifier;

[0060] 2d (Comparative Example 3) The pipe body is coated by a cover mold spraying method, and no tannic acid modifier is added to the water-based pigment;

[0061] 3. The tube body is coated by the ring printing method, and the water-based pigment is added with a tannic acid modifier, and the coating is cured three times.

[0062] The acid etching surface treatment method is as follows: put the polyvinyl chloride pipe body into the acid etching tank, vibrate the acid etching treatment for 3 minutes, wash it with 50% ethanol aqueous solution, and dry it with lotion for later use; the treatment...

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Abstract

The invention discloses a polytetrafluoroethylene tube polytetrafluoroethylene tube ribbon coating preparation method and a polytetrafluoroethylene tube. A modified coating material is manufactured, and tube surface treatment is conducted; by additionally arranging an annular ribbon identification coating on the polytetrafluoroethylene tube, the navigation and positioning of medical staff in endoscopy medicine can be improved.

Description

technical field [0001] The invention relates to the technical field of polytetrafluoroethylene material coating, in particular to a method for preparing a ribbon coating of a medical polytetrafluoroethylene pipe and the polytetrafluoroethylene pipe. Background technique [0002] Polytetrafluoroethylene (Poly tetrafluoroethylene, referred to as PTFE), because of the tetrafluorohalogen substituents contained in the polymerization unit, has obtained unusual "non-stick" and "self-cleaning" characteristics, that is, it does not stick to water Amphiphobic properties of oils. And it is resistant to temperature and solvent, and its chemical properties are stable. Its material was originally commercialized by DuPont and is commonly known as Teflon. It is often made into non-stick coatings for non-stick pans, pipe walls or other various cookware, and is used for internal and external surface treatment of appliances. [0003] In the medical field, PTFE is used in many conventional me...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J7/14C08J7/12C08L27/18C08L27/06C23C14/20C23C14/34
Inventor 刁立鹏陈学刚徐丽娜陈艳艳
Owner 青岛汉兴新材料有限公司
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