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3D printing molding method

A technology of 3D printing and forming method, which is applied in the field of 3D printing and forming, can solve the problems of increasing costs, and achieve the effects of saving costs, mixing evenly, and improving interface interaction

Active Publication Date: 2014-08-20
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of using powder for 3D printing is that it requires specific auxiliary equipment and a temperature higher than the melting point, which undoubtedly increases the cost of manufacturing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 The method of polystyrene modified polycarbonate material 3D printing molding

[0020] 1) Put 60 parts of polycarbonate pellets, 10 parts of polystyrene pellets and 30 parts of chloroform into the batching tank;

[0021] 2) Under the condition of room temperature and normal pressure, stir and mix at a speed of 1500rpm for 10h to form a paste mixture;

[0022] 3) Transfer the paste mixture to the feeding device, and the 3D printing nozzle starts to eject the paste mixture in 2) according to the set program, and wait for the solvent to evaporate;

[0023] 4) After the printed material in 3) is dried, print it layer by layer with the nozzle according to the set procedure, and after the solvent is completely dried, the obtained polystyrene-modified polycarbonate material is obtained.

[0024] At room temperature and normal pressure, chloroform can dissolve polycarbonate and polystyrene, and after stirring and mixing for 10 hours, a paste mixture is formed. Si...

Embodiment 2

[0025] Embodiment 2 The method for 3D printing of impact-resistant polyvinyl chloride material

[0026] 1) 60 parts of polyvinyl chloride (PVC) homopolymer powder and 25 parts of xylene, 5 parts of barium stearate (stabilizer), 8 parts of processing aid ACR201, 2 parts of rutile titanium dioxide (ultraviolet shielding agent) ) into the batching tank;

[0027] 2) The pressure is 2 atmospheres, the temperature is 70°C, and the mixture is stirred and mixed at a speed of 1500 rpm for 7 hours to form a paste mixture;

[0028] 3) Transfer the paste mixture to the feeding device, and the 3D printing nozzle starts to eject the paste mixture in 2) according to the set program, and wait for the solvent to evaporate;

[0029] 4) After the printed material in 3) is dry, use the nozzle to print layer by layer according to the set procedure. After the solvent is completely dried, the obtained polypropylene material is obtained.

[0030] At 70°C, under pressure, xylene can dissolve polyvin...

Embodiment 3

[0031] Embodiment 3 The method for 3D printing of thermosetting unsaturated polyester material

[0032] 1) Put 60 parts of unsaturated polyester powder and 20 parts of acetone, 10 parts of calcium carbonate, and 10 parts of chopped glass fiber into the batching tank;

[0033] 2) Under normal temperature and pressure conditions, stir and mix at a speed of 1500 rpm for 2 hours to form a paste mixture;

[0034] 3) Transfer the paste mixture to the feeding device, add 5 parts of cyclohexanone peroxide / dibutyl ester paste, and quickly use the 3D printing nozzle to eject the paste mixture in 2) according to the set program, Wait for the solvent to evaporate;

[0035] 4) After the printed material in 3) is dry, use the nozzle to print layer by layer according to the set procedure. After the solvent is completely dried, the obtained polypropylene material is obtained.

[0036] Under normal temperature and pressure conditions, acetone can dissolve the unsaturated polyester resin, and...

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PUM

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Abstract

A disclosed 3D printing molding method is characterized by comprising: mixing a polymer, an auxiliary agent and a solvent to obtain a paste, using the paste to perform 3D printing, and printing a layer again after the solvent of a previous layer is volatilized. The provided method is suitable for multiple polymer materials, and because of the effect of the solvent, 3D printing can be directly performed without any additional adhesives. A dissolving or swelling method is combined with the 3D printing technology, molding is realized without heating to a melting temperature or more, energy consumption is reduced and cost is saved.

Description

technical field [0001] The invention relates to a 3D printing molding method, in particular to a 3D printing molding method combined with a dissolution method or a swelling method. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is different from the traditional method of removing materials and processing. It directly manufactures products by accumulating materials layer by layer. 3D printing technology uses 3D CAD models to quickly and accurately manufacture complex structural parts on one device, thereby realizing "free manufacturing", solving the limitations of difficult or impossible processing of traditional processes, and greatly shortening the processing cycle. According to the material accumulation method, 3D printing technology can be divided into seven types: light curing in the container, material jetting, binder jetting, material extrusion, powder bed sintering / melting, sheet lamination, and directed energy d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
Inventor 朱唐郭靖沈衡赵宁徐坚孙文华董金勇李春成符文鑫林学春马永梅
Owner INST OF CHEM CHINESE ACAD OF SCI
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