Product category:
Electronics Manufacturing Materials and Consumables
News Release from: Chomerics Europe | Subject: A230-HTHF and A240-HTHF
Edited by the Electronicstalk Editorial
Team on 30 March 2006
Conductive plastic blocks more EMI
Two compounds achieve new levels of EMI shielding and electrical conductivity.
Chomerics Europe has again enhanced its range of Premier conductive plastic shielding materials with the introduction of two compounds that achieve new levels of EMI shielding and electrical conductivity The properties of A230-HTHF and A240-HTHF enhance design freedom and make them suitable for use in the most demanding applications
This article was originally published on Electronicstalk on 22 Mar 2001 at 8.00am (UK)
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The new materials achieve impressive shielding performance of approximately 85dB.
They use high aspect ratio nickel-plated carbon fibres treated with a proprietary sizing agent to give superior processing and dispersion.
The fibres are then augmented with nickel-based fillers with a lower aspect ratio.
The careful control of this process by Chomerics results in a high melt flow being achieved.
This in turn allows the manufacture of parts with walls down to 0.8mm with localised areas between 0.5 and 0.8mm thick without loss of shielding effectiveness or electrical conductivity.
The reduction of long fibres also produces a smoother more even surface on finished parts.
This is particularly useful where aesthetics are an important consideration of a design.
For example, where parts, once assembled into the finished product, are visible to the equipment user.
Premier shields give weight (up to 75% lighter), cost and space savings, as well as greater design freedom compared with most other shielding approaches.
By having shielding functionality integrated, Premier materials alleviate the need for expensive secondary operations such as machining, plating, painting or vacuum coating.
This can reduce costs by up to 50% with comparable die castings, bent or formed metal, or machined extrusions.
Premier materials are abrasion and corrosion resistant, they also exhibit high tensile and flexural strength characteristics.
The ability to include design features such as internal compartments means that a single Premier part can accommodate multiple logic and RF components in a single shield.
Chomerics is able to supply the new materials in pellet form or as finished custom parts.
Premier conductive plastics meet the requirements of RoHS, WEEE and EPA standards.
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