Electrical Power & Protection


Thermal gels for vertical and high-vibration applications

February 2024 Electrical Power & Protection

The Chomerics Division of Parker Hannifin has launched two high-performance, high-reliability, fully cured dispensable thermal gels. The new THERM-A-GAP GEL 35VT and THERM-A-GAP GEL 50VT conduct heat away from electronics to heat sinks or enclosures, and perform reliably in both vertical and high-vibration applications.

The VT gels − short for vibration/vertical tackiness − feature innovative materials that have proved highly effective at withstanding rigorous tests involving vertical slump, high vibration and pump out, and also telecommunications thermal verification processes. Long-term reliability is essential as it provides confidence for mission-critical applications that rely on consistent thermal performance over many years of continuous operation.

The tackiness of THERM-A-GAP GEL 35VT and THERM-A-GAP GEL 50 delivers the added benefit of displacing air at thin bond lines and minimising thermal impedance. It is possible to dispense the gels at various bond line thicknesses, typically up to 4 mm, to take up gaps created by assembly or manufacturing tolerances.

These cost-effective new gels are suitable for applications such as telecommunications infrastructure, battery energy storage systems (BESS), ADAS and automotive control modules, automotive sensors and radar, and a variety of other electronic systems in the defence, power, industrial and consumer sectors.

GEL 35VT provides a typical thermal conductivity of 3,5 W/m-K, while GEL 50VT offers 5,2 W/m-K. As with all thermal gels from Parker Chomerics, the formulation of these latest products accommodates today’s high-performance and high-reliability electronics while proving ideal for automated dispensing machines, rework and field repair situations. Both GEL 35VT and GEL 50VT require no mixing or secondary curing in support of easy application and system modifications.

THERM-A-GAP GEL 35VT provides electrical properties that include 200 Vac/mm dielectric strength (Chomerics test method); 1013 Ωcm volume resistivity (ASTM D257); 6,8 dielectric constant at 1000 KHz/0,25 mm thick (ASTM D150); and 0,022 dissipation factor at 1000 kHz/0,25 mm thick (Chomerics).

Based on the same tests, THERM-A-GAP GEL 50VT offers the following electrical properties: 200 Vac/mm dielectric strength; 1014 Ωcm volume resistivity; 5,2 dielectric constant at 1000 KHz/0,76 mm thick; and 0,003 dissipation factor at 1000 kHz/0,76 mm thick.

These RoHS-compliant materials are suitable for use in temperatures from -40 to 150°C (GEL 35VT) and -55 to 200°C (GEL 50VT). Both are available in syringe, cartridge and pail containers, offering standard fill volumes from 10 to 2500 ml.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Rail electrification and EV solutions for integrated transport systems
Electrical Power & Protection
A comprehensive range of solutions for rail electrification and electric vehicles is available from leading technology provider ABB, contributing significantly to integrated and sustainable transport systems.

Read more...
PPS delivers containerised distribution board for Western Cape hybrid power project
Electrical Power & Protection
South African electrical enclosure specialist Power Process Systems has successfully completed the design, fabrication and commissioning of a 4000 A containerised distribution board for a wind/PV solar hybrid renewable energy project on a site in the Western Cape.

Read more...
The choice of a thermal carrier is critical for optimal processing
Electrical Power & Protection
Historically steam, fuelled by coal, has been the most prevalent thermal carrier in South African industry. However, times are changing, with the manufacturing and processing sector needing to review the energy reticulation systems and thermal carriers currently in use.

Read more...
ABB’s blueprint for a net zero future
Electrical Power & Protection
ABB’s Mission to Zero is a strategic initiative aimed at achieving a sustainable future characterised by zero emissions, zero accidents and zero waste.

Read more...
How South Africa’s transformer manufacturing industry can fill a gaping infrastructure gap
ACTOM Electrical Machines Electrical Power & Protection
South Africa’s energy transition is accelerating the demand for power transformers. However, this shift toward renewable energy is exposing a critical infrastructure gap: a severe shortage of transformers.

Read more...
General-purpose 350 W AC-DC power supply
Electrical Power & Protection
The TDK-Lambda GUS350 series of compact single-output general-purpose power supplies addresses the need for an economically priced product while maintaining reliability and quality.

Read more...
Ground-breaking battery tester
Comtest Electrical Power & Protection
Midtronics offers the proven MVT handheld battery tester. This revolutionary tool, powered by MDX-AI, is set to redefine the standards of battery diagnostics and testing in the automotive industry.

Read more...
Green hydrogen could be the missing link in powering the future of technology
Electrical Power & Protection
Green hydrogen has numerous applications across multiple industries. It also has the potential to provide a clean energy source to power future technology, with far-reaching implications for both industry and society.

Read more...
Energy audits pave the pathway to sustainability and savings
Schneider Electric South Africa Electrical Power & Protection
Energy audits serve as essential tools for businesses looking to reduce costs and meet environmental targets. By analysing energy consumption across systems such as lighting, HVAC, ICT and water infrastructure, audits identify inefficiencies and quantify carbon footprints, enabling data-driven decisions for operational and financial optimisation.

Read more...
Passive fire protection for lithium-ion battery risks
Electrical Power & Protection
In response to the growing threat posed by lithium-ion (Li-ion) battery fires, a breakthrough passive fire protection solution is now available in South Africa.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved