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Environmental-protection solvent and laminated sheet type component dry-process casting slurry prepared from same

A technology of environmentally friendly solvents and components, applied in the direction of adhesives, etc., can solve the problems of poor solubility, reduced performance of raw material tape, and reduced solid content of slurry, etc., and achieve the effect of good fluidity and consistent density

Active Publication Date: 2013-07-17
SHENZHEN SUNLORD ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since toluene and xylene are highly toxic to the human body and the environment, and are solvents restricted by regulations, it has been proposed to use propyl acetate instead of toluene as the solvent, but whether PVB resin or ACRYL resin series are used as adhesives, The solubility of propyl acetate to PVB and ACRYL resin is far worse than that of toluene. Under the same amount of solvent, the viscosity of the slurry is higher than that of the toluene system. The amount of solvent used will lead to a significant decrease in the solid content of the slurry, and a significant decrease in the performance of the raw tape produced by tape casting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0046] The first environmentally friendly solvent and the prepared slurry for dry casting of laminated chip components

[0047] The composition of the first environmental protection solvent is as follows:

[0048] The main solvent is ethyl acetate and propyl acetate, the mixing ratio is 1:1;

[0049] The auxiliary solvent is isopropanol, and the consumption amount is 15% of the main solvent.

[0050] The composition of the slurry for dry casting of laminated chip components prepared by the first kind of environmentally friendly solvent is as follows:

[0051] Adhesive is ACRYL resin B-44 and A-21 produced by Rohm&Hass (Rohm&Hass), and the consumption is 600g and 120g respectively;

[0052] The powder is MLS-25M high-frequency dielectric powder produced by Japan NEG Company, and the dosage is 4320g;

[0053] The dispersant is DISPERSANT SN-9228 produced in Korea, and the dosage is 2% of the powder;

[0054] The plasticizer is dibutyl phthalate (DBP), and the consumption is ...

specific Embodiment approach 2

[0060] The second kind of environment-friendly solvent and the slurry for dry casting of laminated chip components prepared therefrom

[0061] The composition of the second environmentally friendly solvent is as follows:

[0062] The main solvent is ethyl acetate and absolute ethanol, and the mixing ratio is 10:8;

[0063] The auxiliary solvent is isobutanol, and the consumption is 10% of the main solvent.

[0064] The composition of the slurry for dry casting of laminated chip components prepared by the second kind of environmentally friendly solvent is as follows:

[0065] Adhesive is 540g low molecular weight PVB resin BL-S and 180g medium molecular weight PVB resin BM-S produced by Sekisui Corporation of Japan.

[0066] The powder is MLS-25M high-frequency dielectric powder produced by Japan NEG Company, and the dosage is 4320g;

[0067] The dispersant is DISPERSANT SN-9228 produced in Korea, and the dosage is 2% of the powder;

[0068] The plasticizer is S-2075 produc...

specific Embodiment approach 3

[0072] The third kind of environment-friendly solvent and its prepared slurry for dry casting of laminated chip components

[0073] The composition of the third kind of environment-friendly solvent is as follows:

[0074] The main solvent is ethyl acetate and absolute ethanol, and the mixing ratio is 10:8;

[0075] The auxiliary solvent is isobutanol, and the consumption is 10% of the main solvent.

[0076] The composition of the slurry for dry casting of laminated chip components prepared by the third kind of environmentally friendly solvent is as follows:

[0077] Adhesive is 420g low molecular weight PVB resin BL-S and 140g medium molecular weight PVB resin BM-S produced by Sekisui Corporation of Japan.

[0078] The powder is JR21P ferrite powder produced by Japan JMC Company, and the dosage is 5600g;

[0079] The dispersant is BYK-110 produced by BYK, Germany, and the consumption is 5% of the powder;

[0080] The plasticizer is S-2075 produced by Solutia, and the dosag...

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Abstract

The invention discloses an environmental-protection solvent which comprises a main solvent and a cosolvent. The environmental-protection solvent is characterized in that the main solvent comprises at least one of ethyl acetate, propyl acetate and butyl acetate; the cosolvent comprises at least one of ethanol, isopropanol and isobutanol; and the weight ratio of the cosolvent to the main solvent is1:(3-10). The invention also discloses a laminated sheet type component dry-process casting slurry prepared from the environmental-protection solvent, which comprises ceramic dielectric powder or ferrite powder, adhesive, dispersant, plasticizer and the environmental-protection solvent. The environmental-protection solvent not only has high dissolving power approximate to phenylmethane, but also has volatilization speed similar to phenylmethane. When the environmental-protection solvent is used for preparing the laminated sheet type electronic component casting slurry, the total consumption of the solvent is approximate to that of the non-environmental-protection solvent, such as a phenylmethane solvent, the solid content of the slurry is basically the same as that of phenylmethane, the slurry has favorable flowability, and the density of the cast green tape is basically identical and can be adjusted.

Description

technical field [0001] The invention relates to a solvent and a slurry, in particular to an environment-friendly solvent and the slurry for dry casting of laminated chip components prepared by the same. Background technique [0002] Most of the dry production of existing laminated chip electronic components uses polyvinyl butyral (PVB) resin as an adhesive, and correspondingly uses toluene and ethanol as solvents; a small amount of acrylic acid type (ACRYL, Chinese transliteration: acrylic) Resin series are used as adhesives, correspondingly, toluene and xylene are used as main solvents, and alcohols are used as co-solvents. Since toluene and xylene are highly toxic to the human body and the environment, and are solvents restricted by regulations, it has been proposed to use propyl acetate instead of toluene as the solvent, but whether PVB resin or ACRYL resin series are used as adhesives, The solubility of propyl acetate to PVB and ACRYL resin is far worse than that of tol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/09C08L29/14C08L33/00C09J129/14C09J133/00
Inventor 伍检灿戴春雷刘宁孙峰
Owner SHENZHEN SUNLORD ELECTRONICS