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Rapid molding process method for ointment

A molding process and paste technology, which is applied in the field of component addition, can solve the problems of inability to realize high-precision molding of complex structures and poor precision, and achieve the effects of shortening molding time, small curing shrinkage, and high precision

Inactive Publication Date: 2018-09-21
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has poor precision and cannot achieve high-precision molding of complex structures.

Method used

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  • Rapid molding process method for ointment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the embodiment of the present invention provides a rapid prototyping process for paste, comprising the following steps:

[0036] Create a 3D model of the product;

[0037] Slicing the three-dimensional model by using slicing software to obtain a plurality of model slices;

[0038] Acquiring a scan path of the slice according to the two-dimensional information of the slice;

[0039] Select the bottom slice, and lay the paste according to any one of claims 1-6 on the three-dimensional printer substrate with a scraper;

[0040] moving the printer substrate so that the paste is cured according to the scanning path of the slice;

[0041] The scraper rises to a height equal to the thickness of the slice;

[0042] Select another layer of unprinted slices adjacent to the previous layer of slices, and repeat laying and curing on the cured paste of the previous layer according to the scanning path of the selected slices obtained until all the slices...

Embodiment 2

[0051] The present invention provides a kind of paste, and described paste is suitable for the rapid prototyping process of paste, and its raw material composition comprises:

[0052] Paste powder 50%-60%, initiator 0.5%-2%, dispersant 1%-6%, and the rest is photosensitive resin.

[0053] Preferably, the paste is a ceramic paste.

[0054] Preferably, the particle size of the paste powder is 20nm-20um.

[0055] Wherein, the paste powder includes one of alumina, magnesium metatitanate, zinc oxide, zirconia, aluminum nitride, cadmium sulfide or aluminum titanate;

[0056] Preferably, alumina has the characteristics of high strength, high hardness, high toughness, high heat resistance, high insulation, light transmission and biological inertness, and is suitable for integrated circuit substrates, refractory materials, laser components, artificial joints, etc.;

[0057] Preferably, magnesium metatitanate has dielectric properties and is suitable for ceramic capacitors, microwave ...

Embodiment 3

[0066] A preparation method for paste, for preparing paste, comprising:

[0067] Mix the paste raw materials;

[0068] Add the mixed material into the ball mill;

[0069] Ball milling in a ball mill at a speed of 150 rpm to 350 rpm for 2 hours to 10 hours to prepare a paste.

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Abstract

The invention relates to a rapid molding process method for an ointment. The ointment comprises 50-60% of an ointment powder, 0.5-2% of an initiator, 1-6% of a dispersant and the balance of a light-sensitive resin. The ointment provided by the invention has the characteristics of being small in curing shrinkage, rapid in curing speed, high in curing degree and small in shrinkage, and the 3D printing molding time of a product can be shortened. The ointment can be flattened by using a scraper, and in addition, the height that the scraper is raised each time is fixed, so that the precision of each layer of the product can be ensured, and the precision of the whole product can be ensured. By adopting the ointment provided by the invention, the product made by using a 3D printing molding process of the ointment has the advantages of being low in cost, high in efficiency and high in precision.

Description

technical field [0001] The invention belongs to the technical field of component addition, and in particular relates to a rapid prototyping process for a paste. Background technique [0002] Ceramic materials have excellent high-temperature performance, high strength, high hardness, low density, and good chemical stability. They are used more and more widely in the fields of aerospace, automobiles, and biology. However, the molding process and high manufacturing cost of complex structural ceramic parts restrict the further application of ceramic materials. Therefore, it is necessary to find a low-cost, high-efficiency, high-precision manufacturing technology for complex structural ceramic parts. [0003] At present, the molding methods of paste materials are extrusion molding, the realization accuracy is poor, the interlayer stress is large, and cracks are prone to appear after ceramic sintering. Patent CN106363778B discloses a low-temperature extrusion free forming device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/453C04B35/465C04B35/478C04B35/48C04B35/547C04B35/581C04B35/622B33Y10/00B33Y70/00B33Y80/00
CPCB33Y10/00B33Y70/00B33Y80/00C04B35/10C04B35/453C04B35/465C04B35/478C04B35/48C04B35/547C04B35/581C04B35/622C04B2235/5436C04B2235/5445C04B2235/5454C04B2235/6026C04B2235/612
Inventor 窦睿王醴段文艳李珊
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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