Preparation and properties of epoxy-organically modified layered silicate nanocomposites

被引：54

作者：

Imai, T ^{[1
]}

Hirano, Y ^{[1
]}

Hirai, H ^{[1
]}

Kojima, S ^{[1
]}

Shimizu, T ^{[1
]}

机构：

[1] Toshiba Co Ltd, Chem & Elect Insulat Technol Dept, Power & Ind Syst Res & Dev Ctr, Kawasaki Ku, Kawasaki, Kanagawa 2100862, Japan

来源：

CONFERENCE RECORD OF THE 2002 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION | 2002年

关键词：

D O I：

10.1109/ELINSL.2002.995955

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Epoxy-silicate nanocomposites were prepared by dispersing synthetic layered silicates modified with alkyl-ammonium ions. In the dispersing process, the organically modified layered silicates were mixed in epoxy resin with shearing, and aggregations of the silicates were removed by centrifugal separation after mixing epoxy resin and silicates. Micrographs taken by transmission electron microscopy (TEM) indicate that the nanocomposites have a mixed morphology including both parallel silicate layers (0.1-0.5mum, 5-15 layers) and exfoliated silicate layers (nano-scale dispersion) area. In terms of thermal resistance properties, the glass transition temperature (T-g) of the nanocomposite was shifted to a higher temperature (Delta20degreesC) than pure epoxy. Furthermore, dispersion of modified silicate prevented relative permittivity (epsilon(tau)) and dielectric loss (tandelta) from increasing at a high temperature above the glass transition temperature.

引用

页码：379 / 383

页数：5

共 9 条

[1] Thermoset-layered silicate nanocomposites. quaternary ammonium montmorillonite with primary diamine cured epoxies [J].

Brown, JM ;

Curliss, D ;

Vaia, RA .

CHEMISTRY OF MATERIALS, 2000, 12 (11) :3376-3384

[2] ONE-POT SYNTHESIS OF NYLON-6 CLAY HYBRID [J].

KOJIMA, Y ;

USUKI, A ;

KAWASUMI, M ;

OKADA, A ;

KURAUCHI, T ;

KAMIGAITO, O .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1993, 31 (07) :1755-1758

[3]

Kornmann X, 1999, ANTEC '99: PLASTICS BRIDGING THE MILLENNIA, CONFERENCE PROCEEDINGS, VOLS I-III, P1623

[4]

LAN T, 1995, CHEM MATER, V7, P2144, DOI 10.1021/cm00059a023

[5] SYNTHESIS AND CHARACTERIZATION OF LAYERED SILICATE-EPOXY NANOCOMPOSITES [J].

MESSERSMITH, PB ;

GIANNELIS, EP .

CHEMISTRY OF MATERIALS, 1994, 6 (10) :1719-1725

[6] CLAY POLYMER NANOCOMPOSITES FORMED FROM ACIDIC DERIVATIVES OF MONTMORILLONITE AND AN EPOXY-RESIN [J].

WANG, MS ;

PINNAVAIA, TJ .

CHEMISTRY OF MATERIALS, 1994, 6 (04) :468-474

[7] Hybrid organic-inorganic nanocomposites: Exfoliation of magadiite nanolayers in an elastomeric epoxy polymer [J].

Wang, Z ;

Pinnavaia, TJ .

CHEMISTRY OF MATERIALS, 1998, 10 (07) :1820-1826

[8]

Zilg C, 1999, MACROMOL CHEM PHYSIC, V200, P661, DOI 10.1002/(SICI)1521-3935(19990301)200:3<661::AID-MACP661>3.3.CO

[9]

2-W

← 1 →