Application of Medical Plasma Cleaning Machine on PEEK Biomaterials

• Categories:Industry News
• Author:plasma cleaning machine-surface treatment equipment-CRF plasma machine-Sing Fung Intelligent Manufacturing
• Origin:
• Time of issue:2021-03-26
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(Summary description)PEEK, as the main component of polyether ether ketone, has been widely used in medical nonmetallic implant materials due to its good biocompatibility, dimensional stability and elastic modulus between cortical bone and cancellous bone. Such as human skeleton, spinal implant, wound repair, temporary stents in oral medicine, healing caps, occlusal rods in orthodontic applications, etc. Without the surface treatment process of medical plasma cleaning machine, PEEK material is difficult to be widely used in the biomedical field. Next, we will discuss the application of medical plasma cleaning machine in bipeek material processing. 1. Necessity of ionization of biomedical PEEK materials. Due to the low surface energy and hydrophobic property of PEEK material, the interface bonding force is low when it is combined with the composite resin, which affects the bonding property of the material. Therefore, it is usually necessary to adopt certain treatment technology to improve the surface property of PEEK material. The treatment of concentrated sulfuric acid and silicon coating can effectively improve the binding strength of PEEK material and resin, but this treatment method is not suitable for clinical application. Plasma cleaning machine is used to treat PEEK material, which can not only effectively improve the binding strength, but also meet the requirements of clinical application. 2. Corrosion and coarsening effect of medical plasma cleaning machine on PEEK material treatment. When PEEK material is processed by plasma cleaning machine, particles in the plasma will collide with PEEK material, resulting in sputtering corrosion, and chemical active substances in the plasma will also produce chemical etching on its surface. Due to different corrosion rates, the PEEK material surface will produce small concave and convex, and the corroded material in the plasma will be excited and decomposed into gas components, and reverse diffusion to the material surface. At the same time of erosion and repolymerization, PEEK material surface will produce a large number of protrusions, which make the surface rough, increase the contact area of the bond, improve the bond performance, improve product quality, and ensure the safety and reliability of clinical use of medical devices. 3. Medical plasma cleaning machine improves the hydrophilicity and biocompatibility of PEEK material. Plasma cleaning machine is used to treat PEEK material with inactive chemical properties and poor surface hydrophilicity. Many physical and chemical changes can take place on the surface of PEEK material. In addition to erosion, dense correlation layer can be formed on the surface of PEEK material, and polar groups can be introduced on the surface of the material to improve the hydrophilicity and biocompatibility of PEEK material. In a word, treating PEEK and its composites with medical plasma cleaning machine is an effective way to improve the adhesion performance of PEEK. In addition, due to the different hardness of different materials, the surface treatment of PEEK material can obtain different etching effect and roughness. Therefore, in order to obtain the ideal bonding strength and hydrophilic effect, the processing parameters of the plasma cleaning machine need to be adjusted according to the actual situation.