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High-performance polyimide molding powder material suitable for 3D printing and 3D printing molding method

A polyimide and powder material technology, applied in the direction of liquid material additive processing, processing and manufacturing, etc., can solve the problems of few types of polymers, low temperature resistance, low product strength, etc., to broaden the range of options and improve viscosity The effect of junction strength and high mechanical strength

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the shortcomings of few types of polymers for 3D printing, low product strength, and low temperature resistance. High-performance polyimide molding powder is used as the raw material for 3D printing, which broadens the range of materials for 3D printing. At the same time , choose a suitable adhesive as the bonding solution, and add pigments and fillers, tougheners, leveling agents, and dispersing wetting aids that match the performance requirements of the parts. The mechanical strength of the physical parts printed by this method is relatively high. High, strong adhesion, good toughness and high temperature resistance, and can meet the requirements of 3D color printing

Method used

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  • High-performance polyimide molding powder material suitable for 3D printing and 3D printing molding method
  • High-performance polyimide molding powder material suitable for 3D printing and 3D printing molding method
  • High-performance polyimide molding powder material suitable for 3D printing and 3D printing molding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high mechanical strength, high temperature resistant polyimide powder 3D printing method, the preparation method is as follows:

[0038] (1) According to the set space spraying forming sequence, after computer-aided (CAD) design, the CAD model size of the workpiece is l5mm×15mm×15mm. Through the system model and the forming machine data exchange interface program, the computer terminal outputs instructions to directly control the 3D printing forming machine to operate and prepare according to the forming parameters.

[0039] (2) Polyacrylate of 100 parts by weight, carbon black of 5 parts by weight, light calcium carbonate of 5 parts by weight, polyamide of 3 parts by weight, simethicone oil of 0.8 parts by weight, polyphosphoric acid of 2 parts by weight The salt is fully mixed at 35°C and 800r / min for 0.5h before discharging;

[0040] (3) pave one deck of phthalic anhydride type polyimide molding powder, 0.5 parts by weight heat stabilizer 1010, 5 parts by weight o...

Embodiment 2

[0046] A high mechanical strength, high temperature resistant polyimide powder 3D printing method, the preparation method is as follows:

[0047] (1) According to the set space spraying forming sequence, after computer-aided (CAD) design, the CAD model size of the workpiece is l5mm×15mm×15mm. Through the system model and the forming machine data exchange interface program, the computer terminal outputs instructions to directly control the 3D printing forming machine to operate and prepare according to the forming parameters.

[0048] (2) 100 parts by weight of polyurethane, 5 parts by weight of titanium dioxide, 5 parts by weight of talcum powder, 3 parts by weight of polyvinyl alcohol, 0.8 parts by weight of polyether modified polysiloxane, 2 parts by weight of silicon The acid salt is fully mixed at 35°C and 800r / min for 0.5h before discharging;

[0049] (3) Spread one layer of ether anhydride type polyimide molding powder, 0.7 parts by weight heat stabilizer 168, 7 parts b...

Embodiment 3

[0055] A high mechanical strength, high temperature resistant polyimide powder 3D printing method, the preparation method is as follows:

[0056] (1) According to the set space spraying forming sequence, after computer-aided (CAD) design, the CAD model size of the workpiece is l5mm×15mm×15mm. Through the system model and the forming machine data exchange interface program, the computer terminal outputs instructions to directly control the 3D printing forming machine to operate and prepare according to the forming parameters.

[0057] (2) 100 parts by weight of epoxy resin, 5 parts by weight of iron red, 5 parts by weight of kaolin, 3 parts by weight of nano-titanium dioxide, 0.8 parts by weight of polyacrylic acid, 2 parts by weight of polycarboxylate at 35 ° C, 800r Under the condition of rotating speed of / min, it is fully mixed for 0.5h and then discharged;

[0058] (3) Spread a layer of polyimide molding powder, 1 part by weight of heat stabilizer 1096, and 10 parts by we...

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Abstract

The invention discloses a polyimide powder composite material for 3D printing which includes a powder material and an adhesive. The powder material comprises, by weight, 100 parts of polyimide molding powder, 0.5-1 part of a thermal stabilizer and 5-10 parts of a reinforcing agent. The adhesive comprises, by weight, 60-80 parts of main sticky material, 5-20 parts of a pigment, 5-20 parts of filler, 2-10 parts of a flexibilizer, 0.5-1.5 part of a levelling agent and 1-10 parts of a pigment-and-filler dispersing and wetting agent. The powder composite material is used in a manner of matching 1 part by weight of the powder material with 0.1-0.5 parts by weight of the adhesive. The powder composite material broadens a selectable range of present 3D printing materials. The high-performance polyimide molding powder is used as a powder layer of 3D printing and a liquid adhesive is sprayed onto the powder layer to produce a product in a layer-by-layer bonding manner. With addition of the pigment to the adhesive, a full-color prototype product can be produced and a color model can express more useful information. A polyimide product, which is produced through a powder-adhesive 3D printing technology, is excellent in high temperature resistance performance and is high in mechanical strength.

Description

technical field [0001] The invention relates to the field of 3D printing molding materials, in particular to a high-performance polyimide molding powder material suitable for 3D printing and a 3D printing molding method thereof. Background technique [0002] Rapid prototyping technology is a technology that uses a computer to establish a three-dimensional model of an object, and based on this technology, it is a technology that is directly formed. Compared with traditional forming technology, it significantly shortens the research and development cycle of new products and reduces the cost of research and development. There are many kinds of rapid prototyping methods, such as laser sintering, laser melting, fused deposition, 3D printing, three-dimensional photolithography and so on. The basic working principle of rapid prototyping technology is modeling, stacking and rapid prototyping. Firstly, the physical shape of the object is converted into a three-dimensional digital so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08B29C67/00
CPCB29C64/106C08K2201/011C08K2201/014C08L79/08C08L2205/035C08L33/08C08L83/04C08L77/00C08K13/02C08K3/04C08K2003/265C08K2003/321C08K5/1345C08K3/36C08L75/04C08L29/04C08L83/12C08K2003/2241C08K3/34C08K5/526C08L63/00C08L33/02C08K2003/2272C08K3/346C08K7/24
Inventor 李志波盛力张树升夏爽王小实林学春马永梅孙文华徐坚董金勇李春成
Owner INST OF CHEM CHINESE ACAD OF SCI
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