Tag Archive | RFI

Shielding Medical Electronics from stray RFI / EMI signals can be life saving

The Medical Electronics Industry has to spend a lot of time ensuring their products do not fail due to cross talk from other electronic devices. Conductive Paints, varnishes that can screen signals from the source electronics, are widely used throughout the medical industry for this reason. Systems such as MRI and CAT scanners, de-fibrilators and ECG machines, as well as in body products such as artificial pace makers, can be coated in the protective coatings and ensure that no catastrophic failure can occur which leads to injury, misdiagnosis or death.

To find out more click EMI / RFI conductive shielding coatings  or contact us through

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Further Links of Interest

What is EMI/RFI Shielding?

Where do RFI / EMI Shielding Coatings and Paints fit in?

RFI / EMI Shielding Coatings: Where are they used?

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Can I bond to my polycarbonate casing with a conductive shielding paint?

A conductive coating like a nickel paint can bond easily in general to a material like polycarbonate if it is solvent based. If it is water based then it will need a solvent based primer coating before application. This defeats the purpose of a water based conductive paint so better to stick to solvent based shielding coatings.

Click Shielding and Conductive Paint FAQs to find out further information on questions like What is EMI/RFI Shielding? , Where is EMI / RFI Shielding Paint used? and Why should you use EMI/RFI Shielding Coatings?

How do I spray the EMI / RFI Shielding Coating?

Follow proper techniques as outlined by the gun manufacture. For best results, keep the gun-to-surface distance constant. Move the gun in a straight line along the surface, avoiding arcing motions. Use spray-and-release strokes to avoid excess paint in one spot. If possible, start and end each stroke off the surface.

To apply the required thickness
1. At the recommended distance, spray a thin and even coat onto the surface. Overlap the previous stroke by 50% to avoid gaps in coverage.
2. Before spraying another coat, wait 2 to 5 minutes (depending on the product specifications). The delay avoids trapping solvent between coats.
3. Apply additional coats until the desired thickness is achieved.
4. Let dry for 5 minutes (flash off time) at room temperature.

If you would like to know more about RFI Shielding Paints or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us

Telephone: +44 1226 249019

Email: sales@schservices.com

Website: Click

RFI EMI Shielding Coating Fundamental FAQ’s for the full range of information

EMI / RFI Shielding Coating Application Guide for information on application

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What does the surface resistivity value and method actually mean for RFI shielding coatings and is this the best method to assess the coating?

The “Ohm per square” unit is for sheet resistivity. It refers to the resistance of a film coating measured by electrodes placed at the surface of the coating. This is an industry standard method of presenting data for Shielding Paints. However, a better measurement is volume resistivity and customer trials.

If you would like to know more about the best method for assessment of RFI / EMI coatings or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us via

Telephone: +44 1226 249019

Email: sales@schservices.com

Click What does the surface resistivity value and method actually mean for RFI shielding coatings for a full explanation of the topic.

Click Contact Us to send us your requests.

 

The Computer Sector uses RFI / EMI Shielding Paints on PC’s, laptops and all the other peripherals

RFI / EMI Shielding Paints are widely used throughout the computer industry. Their use in this sector includes shielding electronic devices such as PC’s, laptops, tablets, disk drives, VDUs, printers, keyboards, composite patch channels, batteries, notebooks and Ethernet switches.

Why Use RFI Shielding Paints to protect Computers and other related devices?

Electronic devices and equipments need to be shielded from Radio Frequency Interference (RFI) and Electromagnetic interference (EMI) for various reasons including improving signal quality, limiting cross-talk where devices interfere with each other and potential health risk limitations due to the nature of the signals coming from the devices. These telecommunication, technological, and health reasons form the basis for governmental, industrial, and commercial shielding requirements.

Further Links

RFI / EMI Shielding Coatings used in the Computer Sector to find out more about this sector

Where are RFI / EMI Shielding Paints Used? to look at other sectors which use shielding coatings

MG Chemicals Range of RFI / EMI Shielding Coatings to check out the full range of Protective Coatings that we offer