3D printing spray head and 3D printing device comprising same as well as biological ceramic slurry used for 3D printing device
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A 3D printing and nozzle technology, which is applied in ceramic forming machines, manufacturing tools, additive processing, etc., can solve the problems of insufficient density and low precision, and achieve the effect of improving printing speed and precise positioning
Pending Publication Date: 2018-07-24
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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[0007] In order to improve the deficiencies of the existing technology, the present invention aims at the shortcomings of the current bioceramic slurry such as low precision and insufficient density when printing on nozzle extrusion 3D printing equipment, and proposes a contact nozzle with a ball structure for biological 3D printing nozzle including the contact nozzle of ceramic slurry, 3D printing device including the nozzle, and bioceramic slurry for the 3D printing device
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preparation example Construction
[0160] [Preparation method of bioceramic slurry for 3D printing]
[0161]The present invention also provides a method for preparing the above-mentioned bioceramic slurry, the method comprising the steps of:
[0162] 1) Under sealed conditions, mix the polymer material, plasticizer and organic solvent, and stir for 1-2 hours. After the polymer material is completely dissolved and the stirring is completed, add hydroxyapatite powder, and continue stirring for 1-2 hours;
[0163] 2) Open the seal, adjust the viscosity to a suitable viscosity after the organic solvent volatilizes, and prepare the bioceramic slurry.
Embodiment 1
[0168] 1. Preparation of bioceramic slurry for 3D printing
[0169] 1) Take 8g of polycaprolactone powder in a beaker and add 2g of dimethyl phthalate.
[0170] 2) Add about 40g of dichloromethane solvent and stir for 1 hour. This process should be sealed to prevent the volatilization of dichloromethane;
[0171] 3) After the polycaprolactone is completely dissolved, it means that the stirring is completed, add 8 g of hydroxyapatite powder, and continue stirring for 1 hour;
[0172] 4) After the mixed solution is uniform and stable, the stirring is completed, and the methylene chloride is volatilized while stirring; after the methylene chloride is volatilized, the sum of hydroxyapatite, dimethyl phthalate and polycaprolactone accounts for the total 40 wt.% of the mass is transferred to the storage tank of the 3D printing nozzle described below for subsequent use.
[0173] 2. Contact nozzle structure and non-contact nozzle structure with ball structure
[0174] Such as fig...
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Abstract
The invention discloses a 3D printing spray head and a 3D printing device comprising same and biological ceramic slurry used for the 3D printing device, and also discloses a 3D printing method. The 3Dprinting spray head can be used for realizing precisely extruding fine materials. The 3D printing spray head comprises a contact type spray nozzle which is of a rolling ball structure, and further comprises a non-contact type spray nozzle, wherein the contact type spray nozzle, which is of the rolling ball structure, is preferably used for printing a solid no-span structure; and the non-contact type spray nozzle is preferably used for printing a structure with span. The 3D printing device can realize precise travelling to print a relatively fine and compact structure. The 3D printing method comprises selecting of the spray head, the 3D printing device comprising the spray head and a 3D printing process. The selection of the 3D printing process comprises theoretical derivation and experimental verification of the spray nozzle.
Description
technical field [0001] The present invention relates to the technical field of 3D printing devices and 3D printing materials, in particular to a 3D printing nozzle for bioceramic slurry, a 3D printing device including the nozzle, and a bioceramic slurry for the 3D printing device. Background technique [0002] Bone loss due to disease and accidents brings great pain and great inconvenience to the patient's physiology. At this point, the missing bone needs to be repaired, and the repair requires implant repair materials. Artificial implants can be divided into metal implants, ceramic implants, polymer implants and composite implants between them according to different materials. Metallic materials have good mechanical properties, corrosion resistance and biocompatibility, and are the first choice for inert bone repair materials. Stainless steel, cobalt chromium and titanium alloys are the more common metal implant materials. However, these materials have a high modulus and...
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/00B33Y30/00B33Y70/00
CPCB28B1/001B33Y30/00B33Y70/00
Inventor 林锦新赵超前方舒仪吴松全杨洋卢衍锦林智杰黄婷婷林俊杰罗佳斯李斌
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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