Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


New DuPont™ Zytel® HTN Grades Combat Corrosion of Electrical Wire, Contacts

New “Electrical/Electronics Friendly (EF)” grades of DuPont™ Zytel® HTN PPA resins offer sharply lower potential for corrosion of delicate metal parts that are in intimate contact with parts molded from them.

The new resins are formulated to avoid ingredients that can cause corrosion of fine copper magnet wire or sensitive electrical contacts in parts serving in hot, humid and/or wet environments encountered in automotive and industrial applications.

Photo: DuPont
DuPont™ Zytel® HTN “EF” products are available for the three series of glass-reinforced resins: HTN51G, HTN52G and HTN54G offering a potential solution in hot, moist environments where reduced corrosion and improved retention of electrical properties is required.

Compared to the standard Zytel® HTN grades, the EF resins provide an enhanced retention of volume resistivity with moisture exposure. Tested in DuPont Technical Centers, the EF grades passed CTI test with the most severe condition.

Potential automotive applications include encapsulated sensors for monitoring wheel speed, air or hydraulic pressure and transmission functions, and high-voltage cable connectors for electric and hybrid vehicles. Other potential uses include electrical components where retention of electrical properties with moisture exposure is needed.

Like other Zytel® HTN resins, the new EF grades are based on aromatic copolymers and exhibit excellent retention of strength and stiffness at elevated temperatures. They also feature a relatively low coefficient of thermal expansion, which contributes to their over-all performance in encapsulated parts such as sensors.

Three new “EF” grades are available. Zytel® HTN51G35EF offers the highest retention of properties with long-term exposure to moisture, chemicals and elevated temperatures, compared with other PPAs. Zytel® HTN52G35EF provides enhanced flow, for parts with thin wall sections, such as connectors. Zytel® HTN54G35EF offers enhanced impact resistance and excels in thermal cycling performance, an advantage for encapsulation applications. Both HTN52G35EF and HTN54G35EF also offer processors the benefit of using water for mold temperature control. All three resins contain 35 percent glass fiber reinforcement.

The new Zytel® HTN grades are joining an extensive portfolio of DuPont engineering polymers for encapsulation of electrical and electronic components. Other encapsulation offerings include DuPont™ Rynite® PET and DuPont™ Thermx® PCT thermoplastic polyesters, DuPont™ Zenite® LCP liquid crystal polymer, DuPont™ Zytel® PA66 and DuPont™ Zytel® PA612 resins. For more information, please visit

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.

The DuPont Oval Logo, DuPont™, The miracles of science™ and all product names denoted with ® are trademarks or registered trademarks of E.I. Du Pont de Nemours and Company or its affiliates.

DuPont press contact
Horst Ulrich Reimer
Tel.: +49 (0)6172 871297
Fax: +49 (0)6172 871266

Horst Ulrich Reimer | DuPont
Further information:

Further reports about: Corrosion DuPont HTN HTN52G35EF PPA Rynite® PET Wire Zytel® hybrid vehicle

More articles from Materials Sciences:

nachricht The search for dark matter widens
21.03.2018 | American Institute of Physics

nachricht Scientists have a new way to gauge the growth of nanowires
19.03.2018 | DOE/Argonne National Laboratory

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Researchers at Fraunhofer monitor re-entry of Chinese space station Tiangong-1

In just a few weeks from now, the Chinese space station Tiangong-1 will re-enter the Earth's atmosphere where it will to a large extent burn up. It is possible that some debris will reach the Earth's surface. Tiangong-1 is orbiting the Earth uncontrolled at a speed of approx. 29,000 km/h.Currently the prognosis relating to the time of impact currently lies within a window of several days. The scientists at Fraunhofer FHR have already been monitoring Tiangong-1 for a number of weeks with their TIRA system, one of the most powerful space observation radars in the world, with a view to supporting the German Space Situational Awareness Center and the ESA with their re-entry forecasts.

Following the loss of radio contact with Tiangong-1 in 2016 and due to the low orbital height, it is now inevitable that the Chinese space station will...

Im Focus: Alliance „OLED Licht Forum“ – Key partner for OLED lighting solutions

Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.

They are united in their passion for OLED (organic light emitting diodes) lighting with all of its unique facets and application possibilities. Thus experts in...

Im Focus: Mars' oceans formed early, possibly aided by massive volcanic eruptions

Oceans formed before Tharsis and evolved together, shaping climate history of Mars

A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...

Im Focus: Tiny implants for cells are functional in vivo

For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

Latest News

TRAPPIST-1 planets provide clues to the nature of habitable worlds

21.03.2018 | Physics and Astronomy

The search for dark matter widens

21.03.2018 | Materials Sciences

Natural enemies reduce pesticide use

21.03.2018 | Life Sciences

Science & Research
Overview of more VideoLinks >>>