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Method for extracting 3D printing thermoplastic material from wood

A thermoplastic material, 3D printing technology, applied in the fields of additive processing, fiber raw material processing, textiles and papermaking, etc., can solve the problem of material cannot be prepared, and achieve the effect of high value-added utilization and improved molding effect.

Inactive Publication Date: 2018-06-22
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing 3D printing materials include many, such as metal materials, plastics, aluminum alloys, etc., but no one has tried 3D printing for thermoplastic materials in wood in the prior art, and this material cannot be prepared using existing methods. method prepared

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] The embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood, the method is carried out according to the following steps:

[0025] 1. Prepare the extract: take benzene or benzene derivatives and ethanol to mix to obtain the extract, the volume ratio of the ethanol and benzene or benzene derivatives is 1: (1-3.5);

[0026] 2. Put the wood powder and the extract prepared in step 1 into the extraction device to extract and obtain the extraction residue; 3. Prepare a buffer solution, the pH of which is 3.8-4.2, to step 2 to obtain Add the buffer solution to the extraction residue to obtain a mixed solution, and stir at 70°C-80°C until the mixed solution turns white to obtain an oxidized product;

[0027] 4. Centrifuge the oxidized product obtained in step 3, then wash it with distilled water to neutrality, then wash it with acetone, and finally vacuum-dry the washed product to obtain cellulose;

[0028] 5. Prepare a...

no. 2 example

[0032] An embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood. The method for extracting 3D printing thermoplastic materials from wood is different from any specific implementation in the first embodiment in that the vacuum drying temperature in step 4 is 50°C-65°C.

[0033] Wherein, the alkaline solution in step five is NaOH or KOH solution, and the mass concentration of the NaOH or KOH solution is 5%-15%.

[0034] The embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood, which is different from the previous embodiment in that the number of centrifugation in steps 4 and 5 is 5000-7000rpm, and the centrifugation time is 10min-15min .

[0035] The embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood, which is different from the foregoing embodiments in that the stirring speed of the homogenize...

no. 3 example

[0037] An embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood. The method for extracting 3D printing thermoplastic materials from wood is different from any specific implementation in the first embodiment and the second embodiment in that the flocculant is a high molecular weight polymer, anionic flocculant, One or more of inorganic flocculants.

[0038] Wherein, the high molecular weight polymer is polychitosan or cationic starch containing active amino groups; the inorganic flocculant is a polyaluminum or polyiron inorganic salt complex capable of ionizing strong positive charges in water; the anionic flocculant is ten One or more of sodium dialkylbenzenesulfonate, anionic polyacrylamide, and cetyltrimethylammonium bromide.

[0039] The embodiment of the present invention provides a method for extracting 3D printing thermoplastic materials from wood, which is different from the foregoing embodiments in that the ...

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Abstract

The invention discloses a method for extracting a 3D printing thermoplastic material from wood, belongs to the technical field of 3D printing and in particular relates to the technical field of extracting 3D printing materials from wood. The method for extracting the 3D printing thermoplastic material from wood comprises the following steps: I, preparing an extraction liquid, namely mixing benzeneor a benzene derivative with ethanol so as to obtain the extraction liquid; II, putting wood flour and the extraction liquid into an extraction device, and performing extraction so as to obtain extraction residues; III, preparing a buffer solution, putting the extraction residues into the buffer solution, and stirring at 70-80 DEG C till a mixed liquid is whitened so as to obtain an oxidation product; IV, performing centrifugal separation on the oxidation product, washing with distilled water till being neutral, further washing with acetone, and finally performing vacuum drying on the washingproduct so as to obtain comprehensive cellulose; V, preparing an alkali solution, mixing the alkali solution with the comprehensive cellulose, and performing a series of treatment in a reaction kettle, thereby obtaining the thermoplastic material. The material prepared by using the method can be applied to 3D printing.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, in particular to the technical field of extracting 3D printing materials from wood. Background technique [0002] 3D printing, also known as rapid prototyping technology, is also called additive manufacturing technology. It does not require traditional tools, fixtures and machine tools, but is based on digital model files, using adhesive materials such as metal powder or plastic Layer printing technology to manufacture objects of any shape. 3D printing technology is the integration of multidisciplinary technologies such as mechanical engineering, computer technology, numerical control technology, and material science. The most difficult and core technology of 3D printing is the development of printing materials. Therefore, the development of more diverse and multifunctional 3D printing materials has become a hotspot and key to future research and application. [0003] 3D printers are becom...

Claims

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Application Information

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IPC IPC(8): D21C5/00B33Y70/00C08L1/02
CPCB33Y70/00C08L1/02D21C5/00
Inventor 漆楚生赵博识于志明张扬张德荣母军
Owner BEIJING FORESTRY UNIVERSITY
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