Self-lubricating polypropylene compound material for manufacturing medical injectors

A self-lubricating, composite material technology, applied in syringes, infusion sets, etc., can solve the problems of poor sliding properties between the core rod and the jacket, and achieve excellent self-lubricating, high lubricating, and reasonable formula effects

Active Publication Date: 2011-05-11
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is more serious, after spraying, push and pull the core rod several times, after the lubricant is scraped to both ends, the sliding property between the core rod and the jacket will be significantly worse

Method used

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  • Self-lubricating polypropylene compound material for manufacturing medical injectors
  • Self-lubricating polypropylene compound material for manufacturing medical injectors
  • Self-lubricating polypropylene compound material for manufacturing medical injectors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 100 parts by weight of polypropylene resin (melting temperature is 140°C; at 230°C, the melt flow rate of 2.16kg is 18g / 10min) and 1.2 parts by weight of polytetrafluoroethylene micropowder (particle size 6μm), mixed at high speed After mixing evenly in the machine, it is added to a twin-screw extruder, kneaded, extruded, cooled, dried, granulated, and packaged to obtain a self-lubricating polypropylene composite material.

[0020] The tensile strength, flexural modulus, notched Izod impact strength, haze, static friction coefficient and dynamic friction coefficient of the obtained polypropylene composite materials were tested, and the results are shown in Table 2.

Embodiment 2

[0022] 100 parts by weight of polypropylene resin (melting temperature is 165°C; under the condition of 230°C, the melt flow rate of 2.16kg is 30g / 10min) and 1.6 parts by weight of polytetrafluoroethylene micropowder (particle size 3μm), mixed at high speed After mixing evenly in the machine, it is added to a twin-screw extruder, kneaded, extruded, cooled, dried, granulated, and packaged to obtain a self-lubricating polypropylene composite material.

[0023] The tensile strength, flexural modulus, notched Izod impact strength, haze, static friction coefficient and dynamic friction coefficient of the obtained polypropylene composite materials were tested, and the results are shown in Table 2.

Embodiment 3

[0025] 100 parts by weight of polypropylene resin (melting temperature is 150°C; at 230°C, the melt flow rate of 2.16kg is 30g / 10min) and 0.8 parts by weight of simethicone oil (viscosity 60,000mPas), in a high-speed mixer After mixing evenly in the middle, it is added into a twin-screw extruder, kneaded, extruded, cooled, dried, granulated, and packaged to obtain a self-lubricating polypropylene composite material.

[0026] The tensile strength, flexural modulus, notched Izod impact strength, haze, static friction coefficient and dynamic friction coefficient of the obtained polypropylene composite materials were tested, and the results are shown in Table 2.

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Abstract

The invention discloses a self-lubricating polypropylene compound material for medical injectors and a preparation method thereof. The compound material comprises the following components in part by weight: 100 parts of acrylic resin and 0.1 to 3 parts of lubricant, wherein the lubricant is one or both of silicone oil and polytetrafluoroethylene micropowder. The preparation method comprises the steps of: mixing the acrylic resin and the lubricant evenly, adding the mixture into a twin screw extruder, and mixing, extruding, cooling, drying and granulating the mixture to obtain the self-lubricating polypropylene compound material. The self-lubricating polypropylene compound material adopts raw materials which can be applied in the medical field, and all performances meet national standards in polypropylene special material used for medical transfusion, blood transfusion and injectors. An injector jacket prepared by the method has excellent self-lubricating property; and by a simple preparation process, the coating procedure at the later stage is saved, so that the converging phenomenon caused by coating an improper amount of the lubricant at the later stage is avoided, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of polymer materials and their molding processing, in particular to a polypropylene composite material with excellent self-lubricating properties that can be used for medical syringes. Background technique [0002] Compared with traditional glass syringes, plastic syringes are non-toxic, sterile, non-pyrogenic, can prevent cross-infection caused by poor disinfection and are easy to operate, and are widely used in the medical field. At present, the shape of ordinary syringes is divided into two-piece and three-piece. Compared with the three-piece, the two-piece type saves the rubber piston part in composition, and only consists of the syringe jacket and the core rod. For the use requirements of the syringe, the material of the jacket must have excellent transparency to ensure that the scale value can be read without difficulty, and at the same time there is a sufficiently low frictional resistance between the jacket an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08L27/18C08L83/04A61M5/31
Inventor 赵芸芳张志敏诸泉蒋文真
Owner 合诚技术股份有限公司
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