A kind of shape memory high thermal conductivity medical external fixation multi-layer material and preparation method thereof

Abstract

The invention discloses a medical external fixation multilayer material with shape memory and high thermal conductivity. The medical external fixation multilayer material with shape memory and high thermal conductivity comprises a polycaprolactone external fixation layer and a medical silicone rubber inner layer. The preparation method comprises: firstly, preparing a mixture A by uniformly mixingthe following components in parts by weight: 100 parts of polycaprolactone, 20-30 parts of polyethylene oxide, 5-10 parts of glycerinum, 1-5 parts of a graphene nanoplatelet supported by nano-silver,0.1-1 part of a cross-linking agent, and 0.05-0.3 parts of a photodegradation accelerator; preparing a mixture B by uniformly mixing the following components in parts by weight: 100 parts of siliconerubber, 1-5 parts of the graphene nanoplatelet supported by nano-silver, 0.05-0.3 parts of the photodegradation accelerator, and 0.1-1 part of the cross-linking agent; and then subjecting the mixtureA and the mixture B to coextru-lamination by a multi-layer co-extruded plastic sheet machine, subjecting an obtained double layer metal board to cross-linking by ultraviolet light irradiation, and obtaining the medical external fixation multilayer material with shape memory and high thermal conductivity. The medical external fixation multilayer material with shape memory and high thermal conductivity, prepared with the method, has the advantages of light weight, comfort, environmental protection, low price and the like.

Description

technical field [0001] The invention belongs to the field of medical materials, and in particular relates to the preparation and method of a shape memory high thermal conductivity medical external fixation multilayer material. Background technique [0002] With the continuous development and upgrading of medical materials, many new orthopedic fixation materials have appeared on the market, which has brought a certain impact on the traditional plaster bandage fixation materials. Currently, there are three types of plastic external fixation materials commonly used in the market: plaster bandages, resin bandages, and polyurethane bandages. Traditional gypsum materials have been found to have heavy molds, poor X-ray penetration, long hardening and drying times during use, and poor water resistance of gypsum during use. In recent years, the international community has been committed to the research and development of new materials to replace traditional plaster bandages. Polyme...

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Problems solved by technology

Traditional polycaprolactone mainly uses radiation to initiate crosslinking, but the efficiency of radiation crosslinking is low, and at the same time, when the radiation dose is large, it is easy to cause the tensile strength and elongation at break of polycaprolactone to decrease.

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