Medical nylon composite pipe and preparation method thereof

A composite pipe and nylon technology, which is applied in the field of multi-component medical nylon composite pipe and its preparation, can solve the problems of poor rigidity, low hardness of single-component nylon 12, high water absorption, etc., and achieve good rigidity and good biocompatibility , the effect of low water absorption

Active Publication Date: 2015-06-17
ACCUPATH MEDICAL JIAXING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a new medical nylon composite catheter material that can be used in the field of medical equipment, and the new medical nylon composite catheter material can solve the problem of the low hardness of the single-component nylon 12 material. , high water absorption, poor rigidity, etc.

Method used

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  • Medical nylon composite pipe and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Nylon 66 (BASF, 110921-02) with a molecular weight of 1.5w and nylon 12 (BASF, 111104) with a molecular weight of 1.5w were placed in a vacuum oven at 60°C for 24 hours to remove moisture absorbed in the nylon material. Weigh 500 grams of nylon 66 and 4,500 grams of nylon 12, add them to a twin-screw extruder (SHJ-20C), extrude through twin-screw blending, granulate, and dry to obtain a particle size of 1mm. Two-component nylon composite pellets. Weigh a certain amount of 3,000 grams of two-component nylon composite pellets, add them to a single-screw extruder, and prepare a product with an inner diameter of 1.3mm, an outer diameter of 1.5mm, and a wall thickness of 0.20mm by melt extrusion, cooling and shaping, and drying. mm two-component nylon composite tubing, which can be used in the field of medical devices such as balloon catheters. The properties of the medical nylon composite pipe prepared in this embodiment are shown in Table 1.

[0026] Wherein tensile stra...

Embodiment 2

[0028] Nylon 6 (BASF, 110921-01) with a molecular weight of 1.5w, nylon 66 with a molecular weight of 1.5w (BASF, 110921-02) and nylon 12 with a molecular weight of 1.5w (BASF, 111104) were placed in a vacuum at 70°C Oven drying in vacuum for 4 hours to remove moisture absorbed in the nylon material. Weigh 250 grams of nylon 6, 250 grams of nylon 66 and 4,500 grams of nylon 12, join a twin-screw extruder (SHJ-20C), extrude through twin-screw blending, granulate, and dry to obtain a A three-component nylon composite pellet. Weigh 4,000 grams of three-component nylon composite pellets, add them to a single-screw extruder, and prepare a pellet with an inner diameter of 1.5mm, an outer diameter of 1.75mm, and a wall thickness of 0.25mm through melt extrusion, cooling and shaping, and drying. Three-component nylon composite tubing, which can be used in the field of medical devices such as balloon catheters. The properties of the medical nylon composite pipe prepared in this embod...

Embodiment 3

[0031] Nylon 11 with a molecular weight of 2w (BASF, 110921-03) and nylon 12 with a molecular weight of 1.5w (BASF, 111104) were placed in a vacuum oven at 120°C for 10 hours to remove moisture absorbed in the nylon material. Weigh 2,000 grams of nylon 11 and 3,000 grams of nylon 12, add them to a twin-screw extruder (SHJ-20C), extrude through twin-screw blending, granulate, and dry to prepare a two-component nylon compound pellets. Weigh 1000 grams of two-component nylon composite pellets, add them to a single-screw extruder, and prepare a 0.25mm inner diameter, 0.5mm outer diameter, and 0.25mm wall thickness through melt extrusion, cooling and shaping, and drying. Two-component nylon composite tubing, which can be used in the field of medical devices such as balloon catheters. The properties of the medical nylon composite pipe prepared in this embodiment are shown in Table 1.

[0032]Wherein the tensile strain and the maximum load are obtained by cutting the length of the ...

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Abstract

The invention discloses a medical nylon composite pipe. The medical nylon composite pipe contains at least one of nylon 6, nylon 66, nylon 610, nylon 1010, nylon 11 and aromatic nylon with a total mass percentage of less than or equal to 50%, and nylon 12 with a mass percentage of greater than or equal to 50%. The invention also discloses a preparation method of the medical nylon composite pipe. The method for preparation of the medical nylon composite pipe does not add any additive, so that the prepared medical nylon composite pipe has no harm to the human body, has good biocompatibility, and can be used in the medical field. Also the novel medical nylon composite pipe has high hardness, low water absorption and good rigidity.

Description

technical field [0001] The invention belongs to the field of medical device catheters, in particular, the invention relates to a novel multi-component medical nylon composite pipe and a preparation method thereof. Background technique [0002] Nylon (Nylon, Polyamide, referred to as PA) refers to a plastic composed of polyamide resin. This kind of resin can be prepared by polycondensation of diamine and dibasic acid, or by ring-opening polymerization of lactam formed after dehydration of amino acid. Unlike PS, PE, PP, etc., PA does not gradually change with the increase of heating temperature. Softening, but softening within a narrow temperature range close to the melting point, where the melting point is pronounced and flow occurs once the temperature is reached. [0003] There are many varieties of PA, mainly PA6, PA66, PA610, PA11, PA12, PA1010, PA612, PA46, PA6T, PA9T, etc. PA6, PA66, PA610, PA11, PA12 are the most commonly used. Generally, nylon materials have high m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08L77/02C08L2203/02C08L2203/18C08L2205/02C08L2205/025C08L2205/03C08L77/06
Inventor 李兆敏谢志永蔡国锋何光彬卢惠娜张滢涛阙亦云
Owner ACCUPATH MEDICAL JIAXING CO LTD
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