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Organic composition added in preparation of tape-casting slurry and application of organic composition

A technology of organic composition and casting slurry, applied in the field of casting slurry, can solve the problems of difficult to guarantee the dispersion of ceramic powder, unstable quality of casting green ceramic tape, high viscosity of mixed material, etc., and achieve the elongation at break Increased, denser and more flexible effects

Active Publication Date: 2013-12-11
NAT UNIV OF DEFENSE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mixing of organic components is a one-time blending. During the mixing process, the viscosity of the mixed material is relatively high, and the dispersibility of the ceramic powder is difficult to guarantee.
The quality of cast green tapes made with this cast slurry is not stable, the thickness cannot be controlled, and it is easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the organic composition added in the production of casting slurry in this embodiment, it includes adding the organic composition in the early stage and adding the organic composition in the later stage. The organic composition added in the early stage includes solvent and dispersant, and the organic composition added in the later stage includes solvent, organic A binder and a plasticizer, the solvent is a mixture of toluene and ethanol, the dispersant is tributyl phosphate, the organic binder is polyvinyl butyral, and the plasticizer is dibutyl phthalate.

[0028] A tape-casting process for making green porcelain tapes using the above-mentioned organic composition, specifically comprising the following steps:

[0029] (1) Add organic composition in the early stage of preparation: the mass ratio of solvent ethanol and toluene is 68:32, accounting for 29wt% of the total mass of all compositions for preparing cast slurry; dispersant tributyl phosphate accounts for all 0...

Embodiment 2

[0036] In the organic composition added in the production of casting slurry in this embodiment, it includes adding the organic composition in the early stage and adding the organic composition in the later stage. The organic composition added in the early stage includes solvent and dispersant, and the organic composition added in the later stage includes solvent, organic Binder and plasticizer, the solvent is a mixture of toluene and n-propanol, the dispersant is a mixture of tributyl phosphate and glyceryl trioleate, the organic binder is polyvinyl butyral, and the plasticizer is ortho Dibutyl Phthalate, Dioctyl Phthalate, and Polyethylene Glycol.

[0037] A tape-casting process for making green porcelain tapes using the above-mentioned organic composition, specifically comprising the following steps:

[0038] (1) Add organic composition in the early stage of preparation: the mass ratio of solvent toluene and n-propanol is 51:49, accounting for 25.1wt% of the total mass of al...

Embodiment 3

[0045] In the organic composition added in the production of casting slurry in this embodiment, it includes adding the organic composition in the early stage and adding the organic composition in the later stage. The organic composition added in the early stage includes solvent and dispersant, and the organic composition added in the later stage includes solvent, organic Binder and plasticizer, the solvent is a mixture of ethanol and butanone, the dispersant is a mixture of triolein and castor oil, the organic binder is polyvinyl butyral, and the plasticizer is phthalate Dibutyl formate, Dioctyl phthalate and Polyethylene glycol.

[0046] A tape-casting process for making green porcelain tapes using the above-mentioned organic composition, specifically comprising the following steps:

[0047] (1) Add organic composition in the early stage of preparation: the solvent is an azeotropic system of ethanol and butanone, the mass ratio of ethanol and butanone is 60:40, accounting for...

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Abstract

The invention discloses an organic composition added to early and later stages in preparation of tape-casting slurry. The organic composition added at the early stage comprises a solvent and a dispersing agent, wherein the solvent is at least one of reagents such as ethanol; the dispersing agent is at least one of the reagents such as tributyl phosphate; the organic composition added at the later stage comprises a solvent, an organic binder and a plasticizer, wherein the solvent is at least one of the reagents such as the ethanol, the plasticizer is at least one of the reagents such as polyethylene glycol, and the organic binder mainly is polyvinyl butyral. An application of the organic composition in a tape-casting process concretely comprises the following steps: firstly, mixing and ball-milling ceramic powder, an inorganic bonding phase, and the organic composition added at the early stage, and then adding the organic composition added at the later stage to carry out secondary ball-milling; stirring and defoaming to obtain the tape-casting slurry; adjusting a blade gap and the tape-casting speed of a tape-casting machine; preparing into a wet biscuit; and stripping from a carrier band after drying, so as to prepare a green tape. The organic composition is simple in preparation process, and short in preparation period; the prepared biscuit film is stable in quality, and does not easily crack.

Description

Technical field [0001] The present invention involves a kind of streaming slurry, especially the organic group compounds and applications added to a stream of slurry. Background technique [0002] Thick membrane integrated circuit (also known as thick membrane circuit) refers to the circuit unit of the substrate printing, flowing, drying, and firing through wire printing, flowing, drying, and firing to meet certain functional requirements.Thick membrane electronic slurry mainly refers to a slurry material system for printing and streaming.Thick membrane electronic slurry can be divided into medium pulp, resistance slurry and conductor slurry (electrode slurry), etc. According to different use functions; different components of functional phase, thick membrane electronic slurry can be distinguished as ceramic pulp into ceramic pulpMaterials, precious metal slurry and cheap metal pulp; depending on the use of the slurry, it can also be divided into wire printing slurry and flowing ...

Claims

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Application Information

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IPC IPC(8): C04B35/632
Inventor 张为军刘卓峰秦峻堵永国马振兴曾长光
Owner NAT UNIV OF DEFENSE TECH
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