Cast film slurry of ultrathin lamination flaky inductor and manufacturing method for cast film of ultrathin lamination flaky inductor

An ultra-thin laminated sheet type and production method technology, which is applied in the production field of casting film slurry and casting film, can solve the problem of increasing the density of the green sheet of the film, low viscosity of the casting slurry, and increase of the viscosity of the slurry, etc. problems, to achieve the effect of enhanced ductility, uniform and stable slurry, and reduced viscosity

Inactive Publication Date: 2015-10-07
SHENZHEN GUDIAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for making a cast slurry for laminated chip electronic components and a cast film thereof, which can solve the technical problems that the addition of boron causes the viscosity of the slurry to increase sharply and the performance of the diaphragm to deteriorate sharply. At the same time, The resulting casting slurry has low viscosity, excellent dispersibility, increased film green density, and enhanced ductility

Method used

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  • Cast film slurry of ultrathin lamination flaky inductor and manufacturing method for cast film of ultrathin lamination flaky inductor
  • Cast film slurry of ultrathin lamination flaky inductor and manufacturing method for cast film of ultrathin lamination flaky inductor
  • Cast film slurry of ultrathin lamination flaky inductor and manufacturing method for cast film of ultrathin lamination flaky inductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The ratio of raw materials is: ceramic powder 50%, isohexanediol 0.2%, silane coupling agent 0.2%, castor oil (dispersant) 0.2%, polyethylmethacrylate (binder) 7%, triglyceride Alcohol diisocaprylate (plasticizer) 5%, solvent 37.4%.

[0050] Proceed as follows:

[0051] A. After weighing 50kg of ceramic powder, 0.2kg of castor oil (dispersant), 9.5kg of ethanol, 9.2kg of methyl ethyl ketone, 0.2kg of isohexanediol and 0.2kg of silane coupling agent, add them into a ball mill and mix for 24±4 hours , to obtain a uniform slurry; the particle size D50 of the ceramic powder is 0.6 μm; the solvent composed of ethanol and butanone accounts for 50% of the total solvent mass;

[0052] B. After weighing 11.22kg of ethanol, 7.48kg of methyl ethyl ketone, 7kg of polyethyl methacrylate (binder), and 5kg of triethylene glycol diisocaprylate (plasticizer), the solvent (ethanol, butyl Ketone) and plasticizer are mixed, then add binding agent while stirring at room temperature, stir ...

Embodiment 2

[0057] The ratio of raw materials is: 53% of ferrite powder, 0.4% of isohexanediol, 0.1% of silane coupling agent, 0.4% of tributyl phosphate (dispersant), 5.3% of polyvinyl butyral (binder) %, triethylene glycol diisocaprylate (plasticizer) 4.5%, solvent 36.3%.

[0058] Proceed as follows:

[0059] A. Weigh 53kg of ferrite powder, 0.4kg of tributyl phosphate (dispersant), 14.52kg of ethyl acetate, 3.63kg of butanol, 0.4kg of isohexanediol and 0.1kg of silane coupling agent, and add them together The ball mill was mixed for 26 hours to obtain a uniform slurry; the particle size D50 of the ceramic powder was 0.4 μm; the solvent composed of ethyl acetate and butanol accounted for 50% of the total solvent mass;

[0060] B. After weighing 12.1kg of ethyl acetate, 6.05kg of butanol, 7kg of polyvinyl butyral (binder) and 5kg of dibutyl phthalate (plasticizer), the solvent (ethyl acetate) ester, butanol) and a plasticizer, then add the binder while stirring at room temperature, and...

Embodiment 3

[0065] The ratio of raw materials is: 50% of ferrite powder, 0.2% of pentaerythritol, 0.2% of silane coupling agent, 0.8% of polyethylene glycol octyl phenyl ether (dispersant), polyethyl methacrylate (bonding agent) Agent) 5.0%, butyl benzyl phthalate (plasticizer) 4.7%, solvent 39.6%.

[0066] Proceed as follows:

[0067] A. Weigh 50kg of ferrite powder, 0.8kg of polyethylene glycol octylphenyl ether (dispersant), 12.6kg of propyl acetate, 3.24kg of butanol, 0.2kg of pentaerythritol and 0.2kg of silane coupling agent , added together into a ball mill and mixed for 26 hours to obtain a uniform slurry; the particle size D50 of the ceramic powder is 0.5 μm; the solvent composed of propyl acetate and butanol accounts for 40% of the total solvent mass;

[0068] B. After weighing 19.21kg of propyl acetate, 4.55kg of butanol, 5kg of polyethyl methacrylate (binder), and 4.7kg of butyl benzyl phthalate (plasticizer), the solvent (acetic acid Propyl ester, butanol) and plasticizer a...

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Abstract

The invention provides a cast film slurry of an ultrathin lamination flaky inductor and a manufacturing method for a cast film of the ultrathin lamination flaky inductor. The cast film slurry comprises ceramic or ferrite powder, dihydric alcohol or polyhydric alcohols, a silane coupling agent, a dispersing agent, a plasticizer, binders and a solvent. By adding hexylene glycol, the hexylene glycol and a boron-containing sintering aid are subject to complexing reaction, so the problems of rapidly increased slurry viscosity and rapidly deteriorated diaphragm performance caused by addition of boron are solved; combining between the power and the binder as well as between the binders can be enhanced by adding the silane coupling agent, so the slurry viscosity is reduced, the dispersion is excellent, the diaphragm green-pressing density is increased, ductility is enhanced, and a diaphragm thinning effect is more obvious.

Description

technical field [0001] The invention relates to the technical field of manufacturing electronic components, in particular, to a casting film slurry of an ultra-thin laminated chip inductor and a method for making the casting film. Background technique [0002] Tape casting refers to a molding method in which solvents, dispersants, binders, plasticizers and other components are added to ceramic powder to obtain a uniformly dispersed and stable slurry, and a film of required thickness is obtained on a casting machine. . It has the following advantages: ① single-phase or multi-phase ceramic sheet materials can be prepared; ② small defect size; ③ small fluctuations in product composition, stable performance; ④ high production efficiency, continuous operation; Suitable for industrial production; ⑥Suitable for forming large thin-plate ceramic or metal parts, which are almost impossible or difficult to form by pressing or extrusion, but it is very easy to manufacture blanks of var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/632C04B35/622
Inventor 梁晓斌阳亚辉潘锴
Owner SHENZHEN GUDIAN ELECTRONICS
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