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Three-dimensional printing material based on modification of gypsum base powder

A 3D printing and gypsum powder technology, applied in the field of 3D printing, can solve the problems of affecting printing efficiency and printing accuracy, affecting the quality of printed molding products, and poor fluidity of powder materials, achieving good printing accuracy, promoting hardening effect, and compressive strength Good results

Inactive Publication Date: 2017-01-04
SUZHOU BC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Different rapid prototyping technologies have different requirements for forming materials, but rapid and accurate prototyping is a requirement for 3D printing materials, and the forming materials largely determine the success or failure of rapid prototyping technology, but the commonly used 3D rapid prototyping materials have the following defects : (1) The material contains a large number of components that are difficult to degrade, which puts pressure on the environment; (2) The cost of the material is high, and for small enterprises, the production cost pressure is high; (3) The fluidity of the powder material is poor , there will be a phenomenon of material accumulation in the mold, which will not only affect the printing efficiency, but also cause the surface of the product to be rough, affecting the quality of the printed product; (4) The material is formed and solidified slowly, which affects the printing efficiency and printing accuracy

Method used

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  • Three-dimensional printing material based on modification of gypsum base powder
  • Three-dimensional printing material based on modification of gypsum base powder
  • Three-dimensional printing material based on modification of gypsum base powder

Examples

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Embodiment 1

[0026] A 3D printing material is disclosed in Example 1, and the composition of the material is shown in Table 1.

[0027] Formulation table in table 1 embodiment 1

[0028]

Embodiment 2

[0030] The formula composition of the printing material in embodiment 2 is as shown in table 2,

[0031] Formulation table in table 2 embodiment 2

[0032]

[0033]

[0034] The difference between embodiment 2 and embodiment 1 is that the modifying agent is different. The coagulation-accelerating modifying agent is selected as a kind of organic high polymer in embodiment 2, and its average molecular weight is 200-6000, and it is verified by many groups of comparative experiments. When the molecular weight is 600, the powder rollability and dispersibility of the material are better. Therefore, in the following examples, the coagulation accelerator modifier with a molecular weight of 600 is used as an example.

[0035] The above-mentioned modifier can also choose stearic acid. Compared with stearic acid, sodium eicosyl sulfate and coagulation accelerator modifier, the calcium sulfate powder particles modified by the coagulation accelerator modifier have better rolling prop...

Embodiment 3

[0037] The formulation in Example 3 is shown in Table 3.

[0038] Formulation table in table 3 embodiment 3

[0039]

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Abstract

The invention discloses a three-dimensional printing material based on modification of gypsum base powder. Basic composite powder comprises the following components in parts by weight: 50-90 parts of calcium sulphate dihydrate, 25-45 parts of a modifying agent, 1-5 parts of a filling material, 0-2 parts of fibers, and 60-80 parts of a modified solvent. A water-based bonding solution comprises 70-80 parts of distilled water, 5-10 parts of glycerin, 8-10 parts of potassium sulphate, 5-10 parts of absolute alcohol and 1-2 parts of a surfactant. According to the three-dimensional printing material disclosed by the invention, a three-dimensional shaping principle is combined, and the gypsum base powder is modified, so that the hardening speed of gypsum powder is increased, and the rapid shaping requirements of the printing material are met.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a 3D printing material modified based on gypsum base powder. Background technique [0002] Three-dimensional rapid prototyping technology is a relatively popular technology in manufacturing technology. It is a stacked manufacturing technology. Its principle is to create objects by adding materials to objects layer by layer. It obtains the path, limitation and method of stacking through discrete, and forms a three-dimensional entity through the superposition of stacked materials, which is combined with a computer system to improve the efficiency and accuracy of rapid prototyping, which is in stark contrast to the traditional removal molding. Construction, approximate processing, slice processing, section processing, section superposition, post-processing, etc. [0003] Among them, the 3DP process adopts three-dimensional three-dimensional molding. The section of the part is printed on ...

Claims

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Application Information

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IPC IPC(8): C04B28/14B33Y70/00
CPCC04B28/14B33Y70/00C04B24/16C04B24/045C04B14/06C04B14/28C04B14/22C04B14/42C04B16/02C04B14/386C04B14/46C04B24/026C04B22/147C04B2103/40
Inventor 郭池黄祺王智梁园陈号徐军戴晨雨
Owner SUZHOU BC TECH
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