Elektrisch Leitfähige Mikrowellenabschirmungszusammensetzungen

Details

Veröffentlichungs-Nr.

EP4023704

Aktenzeichen

EP20217686

Anmeldetag

29. Dezember 2020

Veröffentlichung

6. Juli 2022

Rechtsraum

EP

IPC

C08K3/04C08L71/12G21F1/10H01B1/24H05K9/00

Abstract

A thermoplastic composition includes: (a) from about 82 wt% to about 92 wt% of a thermoplastic resin including poly(phenylene ether) and polystyrene; and (b) from about 3 wt% to about 13 wt% of a carbon-based filler. The carbon-based filler has a specific surface area of at least 650 square meters per gram (m<2>/g) and an Oil Absorption Number of at least 250 milliliter per 100 gram (ml/100g). The composition has a dielectric constant ε' of between 3.5 and 10 and a dissipation loss ε" of between 0.25 and 5, as measured at a frequency of between about 75 gigahertz (GHz) and about 110 GHz. A 1/8-inch-thick molded sample of the composition exhibits a Percent Absorbed Power measured in Transmission mode of at least 50% when observed according to a Free Space method at frequencies from about 75 GHz to about 110 GHz.

Anmelder

Firma

SHPP Global Technologies B.V.

Land

🇳🇱 Niederlande

Fachgebiete