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Preparation method of low-shrinkage 3D (three-dimensional) printing material

A 3D printing, low shrinkage technology, applied in the direction of additive processing, etc., can solve the problems affecting the dimensional accuracy of printed product parts, large shrinkage rate, etc., and achieve the effect of easy acquisition of raw materials, simple preparation process, and broad application prospects.

Inactive Publication Date: 2017-07-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the materials used in traditional 3D printing have a large shrinkage rate during the preparation and sintering process, which affects the dimensional accuracy of the printed product parts, a kind of bovine bone is provided as a raw material, which is modified and processed. Adding calcium silicate, supplemented with polymethyl methacrylate, etc. to prepare low-shrinkage 3D printing materials
The present invention uses carbonized bovine bone as the skeleton to make the structure, uses self-made amorphous calcium silicate and nano-alumina as filling components to fill the pore structure of the skeleton, and uses polymethyl methacrylate as the curing agent. Effectively avoid product curing shrinkage, and effectively solve the problem of large shrinkage in the preparation process of traditional 3D printing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First weigh 800g of fresh beef bones, pour them into an iron pot filled with 3L of clear water, cook them for 30 minutes at a temperature of 100°C, then take out the beef bones, rinse them with water for 5 times, and then transfer the rinsed beef bones to In the pulverizer, pass through a 50-mesh sieve after crushing to obtain coarse beef aggregate, and pour the obtained coarse beef aggregate into a beaker filled with 500mL of clear water, then add 12g of sucrose, 5g of beef extract, 5mL of biogas liquid, and use a glass rod to Stir and mix for 20 minutes; after the above stirring and mixing is completed, seal the above beaker with plastic wrap, place the sealed beaker in a dark place, let it stand for fermentation for 15 days, filter the material in the beaker, collect the filter cake, and remove the filter cake Transfer to an oven, dry to constant weight at a temperature of 110°C, then transfer the dried filter cake to a pulverizer, pass through a 500-mesh sieve after ...

example 2

[0019] First weigh 600g of fresh beef bones, pour them into an iron pot filled with 2L of clean water, cook them for 20 minutes at a temperature of 95°C, then take out the beef bones, rinse them with clean water for 3 times, and then transfer the rinsed beef bones into In the pulverizer, pass through a 35-mesh sieve after crushing to obtain coarse beef aggregate, and pour the obtained coarse beef aggregate into a beaker filled with 400mL of clear water, then add 10g of sucrose, 3g of beef extract, 3mL of biogas liquid, and use a glass rod Stir and mix for 15 minutes; after the above stirring and mixing is completed, seal the above beaker with plastic wrap, place the sealed beaker in a dark place, let it stand for fermentation for 10 days, filter the material in the beaker, collect the filter cake, and filter the filter cake Transfer to an oven, dry to constant weight at a temperature of 105°C, then transfer the dried filter cake to a pulverizer, pass through a 325 mesh sieve af...

example 3

[0022] First weigh 700g of fresh beef bones, pour them into an iron pot filled with 2L of clear water, cook them for 25 minutes at a temperature of 97°C, then take out the beef bones, rinse them with water for 4 times, and then transfer the rinsed beef bones into In the pulverizer, pass through a 40-mesh sieve after crushing to obtain coarse beef aggregate, and pour the obtained coarse beef aggregate into a beaker filled with 450mL of clear water, then add 11g of sucrose, 4g of beef extract, 4mL of biogas liquid, and use a glass rod Stir and mix for 17 minutes; after the above stirring and mixing is completed, seal the above beaker with plastic wrap, place the sealed beaker in a dark place, let it stand for fermentation for 12 days, filter the material in the beaker, collect the filter cake, and filter the filter cake Transfer to an oven, dry to constant weight at a temperature of 107°C, then transfer the dried filter cake to a pulverizer, pass through a 420 mesh sieve after cr...

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Abstract

The invention relates to a preparation method of a low-shrinkage 3D (three-dimensional) printing material and belongs to the technical field of printing materials. The preparation method comprises: boiling fresh bovine bone, removing residual bloody water from the bovine bone, crushing, sealing, fermenting so that organic matters in the bovine bone are degraded initially, charring such that small-molecular organic matters degraded are volatilized to form a porous charred framework, allowing calcium nitrate to react with sodium silicate to obtain amorphous calcium silicate, mixing the amorphous calcium silicate with the porous charred framework, polymethyl methacrylate, quick lime and the like to obtain the low-shrinkage 3D printing material. The curing shrinkage problem in the sintering process is avoided by using the low-shrinkage 3D printing material prepared herein, and the product is formed precisely; no peculiar odor is produced during printing, the raw material is simple and easy to obtain, the preparation process is simple, and the preparation method has a promising application prospect.

Description

technical field [0001] The invention relates to a method for preparing a low-shrinkage 3D printing material, which belongs to the technical field of printing material preparation. Background technique [0002] 3D printing is a technology based on digital model files, using fluid, powder, silk (rod) and other materials that can be cured, bonded, and fused to construct objects by solidifying, bonding, and fusing layer by layer. . It is often used to make models in the fields of mold manufacturing and industrial design, and is gradually used in the direct manufacture of some products. There are already parts printed using this technology. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and others. 3D printing technology appeared in the mid-1990s and is actually the latest rapid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/06B33Y70/00B33Y10/00
CPCC04B26/06B33Y10/00B33Y70/00C04B2201/50C04B14/022C04B18/0427C04B22/064C04B22/06
Inventor 董燕敏薛洋许丽君林晨
Owner CHANGZHOU UNIV
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