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TPE composition and high performance antibacterial medical tourniquet prepared from TPE composition

A composition and modification technology, applied in bandages, medical science, absorbent pads, etc., can solve the problems of expensive nano-silver, poor dispersion of nano-silver, and decreased antibacterial performance

Pending Publication Date: 2015-08-12
ANHUI XIONGYA PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to its use as a medical material, the tourniquet is required to have good antibacterial properties. In the prior art, the performance of the TPE tourniquet is generally improved by adding nano-silver antibacterial agents to thermoplastic elastomers. However, on the one hand, the price of nano-silver Expensive, leading to high product cost. On the other hand, the dispersion of nano-silver in thermoplastic elastomer is not good, which will not only lead to the decline of antibacterial performance, but also lead to the reduction of mechanical strength

Method used

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  • TPE composition and high performance antibacterial medical tourniquet prepared from TPE composition
  • TPE composition and high performance antibacterial medical tourniquet prepared from TPE composition
  • TPE composition and high performance antibacterial medical tourniquet prepared from TPE composition

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preparation example Construction

[0064] Another aspect of the present invention provides the preparation method of high-performance antibacterial medical tourniquet, comprising the following steps:

[0065] (1) The TPE composition is extruded and granulated by twin-screw;

[0066] (2) Vacuum injection molding the product obtained in step (1) into a mold at 170° C. to 200° C., and maintain the injection molding temperature for 8 hours under vacuum conditions, and then cool and solidify.

[0067] The applicant unexpectedly found that the cross-linking density of the tourniquet can be further increased by vacuum injection molding and maintaining high temperature under vacuum conditions. This is because graphene oxide contains a large number of carboxyl groups, which can undergo Friedel-Crafts acylation reaction with the benzene ring on the styrene unit in SEBS and MAH-g-SEBS under high temperature and vacuum dehydration conditions, thereby further cross-linking. Linked to provide the beneficial technical effect...

Embodiment 1～8 and comparative example 1

[0091] Prepare high-performance antibacterial medical tourniquet according to the formula in the following table, and the preparation method is as follows (the consumption of following components is all parts by weight):

[0092] (1) After mixing the raw materials by weight, granulate through twin-screw extrusion;

[0093] (2) Vacuum injection mold the product obtained in step (1) into a mold at 195° C., keep the temperature under vacuum for 8 hours, and then cool and solidify.

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Abstract

The invention discloses a TPE composition containing SEBS, PP, and quaternary ammonium salt modified chitosan. The invention also discloses a method for preparation of a high performance antibacterial medical tourniquet prepared from the TPE composition under the condition of vacuum injection molding.

Description

technical field [0001] The invention relates to a TPE composition and a tourniquet prepared therefrom. More specifically, the present invention relates to a medical TPE tourniquet with high antibacterial properties and a preparation method thereof. Background technique [0002] Thermoplastic Elastomer TPE (Thermoplastic Elastomer) is a material that has the high elasticity, high strength, and high resilience of rubber, and has the characteristics of injection molding. It is environmentally friendly, non-toxic and safe, has a wide range of hardness, excellent colorability, soft touch, weather resistance, fatigue resistance and temperature resistance, excellent processing performance, no need for vulcanization, can be recycled to reduce costs, and can be used for secondary injection molding. It can be coated and bonded with PP, PE, PC, PS, ABS and other base materials, and can also be formed separately. [0003] Thermoplastic elastomer TPE tourniquet, as a new type of enviro...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/12C08L5/08C08L51/00C08L51/06C08L91/06C08K13/06C08K9/04C08K3/04C08K3/34C08K3/22A61L15/28A61L15/24A61L15/44A61L15/18
Inventor 葛军
Owner ANHUI XIONGYA PLASTIC TECH
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