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Methods and systems for making composite cover plate

A composite cover plate and carrier plate technology, applied in lamination systems, chemical instruments and methods, ceramic products, etc., can solve problems such as difficulties in nano-injection molding, and achieve improved bonding strength and reliability, high comprehensive yield, and increased Effect of contact area

Pending Publication Date: 2020-03-24
东莞市陶陶新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is extremely difficult to perform nano-injection molding on 3D ceramics. At present, nano-injection molding can only be performed on 2D products (flat sheets).

Method used

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  • Methods and systems for making composite cover plate
  • Methods and systems for making composite cover plate
  • Methods and systems for making composite cover plate

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] According to the method for preparing a composite cover plate according to an embodiment of the present invention, a membrane and a porous membrane are respectively prepared by using a casting process, and the thickness of the membrane and the porous membrane can be freely adjusted according to requirements; further, the obtained membrane and The porous membrane is sent to the 3D carrier mold after lamination. During the lamination process, the number and stacking sequence of the membrane and the porous membrane can be adjusted according to the product requirements. After the lamination is completed, the Vacuum encapsulation is conducive to the subsequent isostatic pressing treatment; further, the 3D carrier mold laminated with the membrane and the porous membrane is subjected to isostatic pressing to obtain a 3D green body, which is further sintered and the first post-treatment Finally, a 3D ceramic part with a porous surface can be obtained; and by directly injecting t...

Embodiment

[0094] (1) A pure black 3Y zirconia cast diaphragm A with a size of 200mm×100mm×0.3mm and a glue content of 9.5% was prepared by a casting process;

[0095] (2) Prepare a casting porous membrane B with a size of 200mm×100mm×0.005mm and a glue content of 20% by a casting process;

[0096] (3) Transfer the single-piece porous membrane B and three pieces of membrane A to the upper and lower surface of the 3D carrier mold that has been treated with separation, such as image 3 shown, and vacuum-packed;

[0097] (4) After (3) is completed, put the encapsulated diaphragm together with the 3D carrier mold into warm water isostatic pressing for isostatic pressing. The water temperature is 70°C, the holding pressure is 150Mpa, and the holding time is for 300s;

[0098] (5) After (4) is completed, remove the bag and put the green body into the furnace for sintering according to a certain sintering system, wherein the sintering temperature is 1410°C and the heat preservation is 180min;...

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PUM

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Abstract

The invention discloses a method and system for preparing a composite cover plate, and the method comprises the steps: carrying out tape casting of first ceramic slurry to acquire a diaphragm; mixingsecond ceramic slurry with a pore-forming agent, and carrying out tape casting treatment to obtain a porous membrane; sending the membrane and the porous membrane into a 3D carrier plate mold subjected to adhesion separation treatment, vacuumizing and encapsulating, then carrying out isostatic pressing treatment together with the carrier plate mold, and carrying out sintering and first post-treatment on the obtained green body to obtain a 3D ceramic piece with a porous surface as a binding surface; carrying out injection molding on the injection molding feed to obtain a 3D plastic lining witha rough binding surface; and fitting the fitting surface of the 3D ceramic part with the fitting surface of the 3D plastic lining through a dispensing process, and carrying out second post-treatmenton the obtained bonded part to obtain the composite cover plate. Compared with in-mold injection molding, the composite cover plate manufactured through the method is high in comprehensive yield, andcompared with a traditional dispensing process, the bonding strength and reliability of the 3D ceramic part and the 3D plastic lining are greatly improved.

Description

technical field [0001] The invention belongs to the field of preparation of 3D appearance structural parts, in particular, the invention relates to a method and system for preparing a composite cover plate. Background technique [0002] With the development of technology, the materials of the structural parts of 3C products are also constantly evolving. Taking mobile phone backplanes as an example, the current mainstream backplane materials have gradually changed from plastics and aluminum alloys to glass, ceramics and other materials. However, due to the high density of ceramics, the application of ceramic appearance structural parts in 3C products is greatly restricted. In order to break through the bottleneck and meet the needs of end customers, engineers and technicians have developed nano-injection molding technology and dispensing technology to combine ceramics and plastics. This type of technology for manufacturing new composite 3C structural parts combines the high...

Claims

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Application Information

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IPC IPC(8): H04M1/02B32B39/00B32B38/00B32B5/22B32B18/00B32B27/34B32B27/36B32B37/12C04B35/48C04B35/622C04B38/06
CPCB32B5/22B32B18/00B32B27/34B32B27/36B32B27/365B32B37/12B32B38/00B32B39/00B32B2250/02B32B2367/00B32B2369/00B32B2377/00C04B35/48C04B35/622C04B38/068C04B2235/3225C04B2235/602C04B2235/656C04B2235/6567H04M1/0202
Inventor 吴沙鸥杨青松徐信林李婵冼锐炜孔雪芳贺鹏华毕倩兰李方伟
Owner 东莞市陶陶新材料科技有限公司