A method of annealing to regulate the surface wettability of pa3200 3D printed parts

A PA3200 3D and 3D printing technology, which is applied in 3D printing technology and medical application fields, can solve the problems such as the wettability of PA3200 3D printed molded parts that have not yet appeared, and achieve the effect of simple operation, simple process operation and simple process

Active Publication Date: 2019-09-27
BEIJING UNIV OF TECH
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Problems solved by technology

Compared with other methods, its main advantage is that it can precisely control the annealing temperature under different atmospheres, so as to achieve the purpose of precisely regulating the wettability of the surface of the molded parts, and there is no such thing as regulating the wetting of PA3200 3D printed molded parts for annealing treatment. reports about sex

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  • A method of annealing to regulate the surface wettability of pa3200 3D printed parts

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail:

[0020] The first step: use 3D printing SLS technology to prepare PA3200 3D printing molded parts

[0021] This step aims to form PA3200 3D printed parts with excellent performance, which can be divided into three processes: data preparation, forming and post-processing:

[0022] 1) Data preparation: This process mainly uses magics software to create a 3D model of the molded part and save it in STL (3D printing model special format) format, then use the fast slicing software RP Tools to slice the established model, and then import the sliced ​​file into PSW 3.7 (This is the software that controls the operation of the machine), save it as a .eosjz file with section and height information, and finally copy this file to the printer EOS P396 machine computer PSW 3.7 software, just load it, this is the preparation data process;

[0023] 2) Forming: ...

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Abstract

The invention discloses a method for adjusting and controlling the surface wettability of a PA3200 3D printing moulding workpiece through annealing treatment, belonging to the technical field of 3D printing and medical application. According to the method, the PA3200 3D printing moulding workpiece is manufactured by utilizing a 3D printing SLS (Selective Laser Sintering) technique; the moulding workpiece is annealed by adopting a tubular vacuum furnace; the tubular furnace has the advantages of being simple in operation, capable of high-precision temperature controlling, capable of working atvarious atmospheres and the like; heating up time is set to be 1-3 hours; temperature maintaining time is set to be 1-5 hours; cooling time is set to be 1-3 hours; annealing temperature is set to be 100 DEG C-160 DEG C; the annealing atmosphere contains oxygen and nitrogen; and the moulding workpiece is subjected to annealing treatment according to the set parameters. After annealing treatment, the contact angle of the surface of the moulding workpiece is changed from 121 degrees to 60 degrees; and the surface wettability is changed from hydrophobicity to hydrophility, so that the surface wettability of the PA3200 3D printing moulding workpiece is effectively adjusted and controlled.

Description

technical field [0001] The invention relates to the field of 3D printing technology and medical application, in particular, a method for regulating the surface wettability of PA3200 3D printing molded parts by annealing treatment is designed. Background technique [0002] PA3200 is a white powder of PA2200 filled with micron-sized glass beads, which has excellent mechanical properties and biocompatibility. At present, the main molding method of PA3200 is 3D printing laser selective sintering (SLS) technology. SLS is a rapid prototyping technology that uses high-power lasers to sinter small particles (polymers, ceramics) into solid bodies layer by layer. It has the characteristics of fast forming speed and high precision. The PA3200 3D printed molding based on 3D printing SLS technology has excellent mechanical properties and biocompatibility, and has great application prospects in the medical field, including sutures, tracheal stents, channels, catheters, etc. Components u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/379B29C71/02B29C71/00B33Y40/00
Inventor 蒋毅坚魏小波曾勇闫胤洲赵艳
Owner BEIJING UNIV OF TECH
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