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High-strength high-resilience medical TPE (thermoplastic elastomer) tourniquet and preparation method thereof

A high-strength and resilient technology, applied in the field of medical TPE tourniquet and its preparation, can solve the problem of difficulty in obtaining high cross-linking density

Inactive Publication Date: 2015-08-05
ANHUI XIONGYA PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally believed that the mechanical strength and resilience of medical TPE tourniquet can be greatly improved through cross-linking treatment. However, since SEBS and PP molecular chains do not contain polar and reactive groups, it is difficult to obtain high crosslink density

Method used

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  • High-strength high-resilience medical TPE (thermoplastic elastomer) tourniquet and preparation method thereof

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preparation example Construction

[0042] Another aspect of the present invention provides a method for preparing a high-strength, high-resilience tourniquet, comprising the following steps:

[0043] (1) After mixing the raw materials by weight, granulate through twin-screw extrusion;

[0044] (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.

[0045] In one embodiment, the injection molding temperature in the step (2) is 195°C.

[0046] 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 dehyd...

Embodiment 1～8 and comparative example 1

[0067] Prepare high-strength, high-resilience medical TPE tourniquet according to the formula in the following table, and the preparation method is as follows (the consumption of the following components is all parts by weight):

[0068] (1) After mixing the raw materials by weight, granulate through twin-screw extrusion;

[0069] (2) Vacuum injection molding the product obtained in step (1) into a mold at 195° C., and maintain the injection molding temperature for 8 hours under vacuum conditions, and then cool and solidify.

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Abstract

The invention discloses a high-strength high-resilience medical TPE (thermoplastic elastomer) tourniquet which is made of raw materials including SEBS (styrene-ethylene-butylene-styrene), PP (polypropylene), amino containing oxidized graphene and white oil. The invention further discloses a method for preparing the high-strength high-resilience medical TPE tourniquet under the condition of vacuum injection molding.

Description

technical field [0001] The invention relates to a medical TPE tourniquet and a preparation method thereof, more specifically, the invention relates to a medical TPE tourniquet having both high strength and high resilience 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 ...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/12C08K13/06C08K9/04C08K3/04C08L91/00
Inventor 葛军
Owner ANHUI XIONGYA PLASTIC TECH
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