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Titolo:
Factors influencing the permittivity of polymer/ceramic composites for embedded capacitors
Autore:
Ogitani, S; Bidstrup-Allen, SA; Kohl, PA;
Indirizzi:
Asahi Chem Ind Co Ltd, Mat & Elect Devices Lab, Fuji, Shizuoka 4160934, Japan Asahi Chem Ind Co Ltd Fuji Shizuoka Japan 4160934 Shizuoka 4160934, Japan Georgia Inst Technol, Sch Chem Engn, Atlanta, GA 30332 USA Georgia Inst Technol Atlanta GA USA 30332 hem Engn, Atlanta, GA 30332 USA
Titolo Testata:
IEEE TRANSACTIONS ON ADVANCED PACKAGING
fascicolo: 2, volume: 23, anno: 2000,
pagine: 313 - 322
SICI:
1521-3323(200005)23:2<313:FITPOP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
PARTICLE;
Keywords:
composite; dispersion; embedded capacitor; epoxy; filled polymers; integral capacitor; integral passives; permittivity; PMN-PT; polyacrylics; polyimide; surfactant; 0-3 connectivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Ogitani, S Asahi Chem Ind Co Ltd, Mat & Elect Devices Lab, Fuji, Shizuoka 4160934, Japan Asahi Chem Ind Co Ltd Fuji Shizuoka Japan 4160934 60934, Japan
Citazione:
S. Ogitani et al., "Factors influencing the permittivity of polymer/ceramic composites for embedded capacitors", IEEE T AD P, 23(2), 2000, pp. 313-322

Abstract

The effect of the polymer permittivity on the permittivity of the polymer/lead magnesium niobate-lead titanate (PMN-PT) composite was investigated using epoxies, polyimides, polycarboxylic acids, and poly(methyl methacrylate) (PMMA), The permittivity of the polymers (without ceramic loading) rangedfrom 2.8-4.6. The permittivity of the composites, except for epoxies, was found to agree with the value predicted by the Smith [1] equation. Polyacrylic acid (PAA) was found to bond to the PMN-PT surface due to an acid-base reaction, Novolac epoxy was not found to interact strongly with PMN-PT. Theresults suggest that polycarboxylic acids can act as a surfactant to deagglomerate PMN-PT powder while epoxies might not. Hence, the lower permittivity found in the epoxy based composites may be due to particle agglomeration. Three out of eight phosphated eater type surfactants were shown to increase the composite permittivity, indicating that the most effective surfactants decreased agglomeration of the ceramic powder and improved the dispersion in the polymer matrix. The particle size of the PMN-PT in the same solvent as used in the composite experiment was reduced by the use of ball-milling with the aid of the surfactant, Assuming that agglomerated particles act as a larger particle, an electrostatic field simulation was used to determine that the reduction in particle size due to deagglomeration increased thepermittivity of the composite. These results were confirmed by experiment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 12:56:42