ELECTRICAL AND ELECTRONIC | INNOVATION


Fit-for-purpose PPA for fitness watch


Casio Computer Company, Tokyo, uses BASF’s high-performance plastic Ultramid Advanced N in its new digital watch, the G-Shock GBD-H1000. The flame retardant polyphthalamide (PPA) is used to manufacture the terminal header which sits on the terminal block and contributes to power charging and data syn- chronisation.


BASF says the high heat


resistance as well as the excep- tional mechanical and dimen- sional stability of its material enhance the robustness, func- tionality and performance for which the G-shock watches are


Video and IEC 60950 IT Equipment standards, strengthening safety requirements. One require- ment is for hazardous energy sources such as lithium-ion batteries to be contained via built-in safeguards to help prevent the energy from transferring to device users. The Realme C25 has a fast-charging, high powered 6000mAH lithium-ion battery, and its ultra-thin-walled cover is injection moulded in LNP Elcres EXL7414. Realme was the first consumer electronics brand to adopt the material, which it uses in place of a standard PC. LNP Elcres EXL7414 resin uses a halogen-free FR formulation. Celanese continues with development of liquid crystal plastics (LCPs) with dielectric constants (Dk) tuned for electronic applications (see E&E feature in Injection World October 2020). It emphasizes how the Dk of the plastics used to make high- speed connectors has a major impact on the final product’s performance and reliability. It says the issue is increasingly important as 5G rolls out around the world. The company says that for applications that


require tight impedance matching, high-Dk Zenite LCP 650 is an ideal solution, while low-Dk Zenite LCP 251 is a good match for fine pitch connectors and low-loss signal transmission. Dr Young Kim, Senior Principal Engineer at


Celanese, says: “Too much impedance disrupts communication between the connector and the transmission line, leading to signal loss and slower service. The key to preventing these effects is ensuring impedance is exactly the same between


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renowned. Due to its low moisture uptake and high heat deflection temperature, the PPA (a polyamide 9T) is especially suitable for SMT soldering processes, as it prevents


blistering or changes in dimensions of the processed part. It also has good laser transparency, providing extra freedom for post-moulding assembly operations. The watch incorporates five


different sensors, requiring materials that are resistant to chemicals, shock and water especially during extreme sports. Ultramid Advanced N displays high dimensional stability under humidity and heat as well as exceptional chemical resistance; it also adheres well to the metal terminal block, providing a high level of waterproofing.


the transmitter and connector.” Impedance matching is becoming more critical for connector manufacturers, because as data transfer needs have increased (they now sit at an average of 112 Gbps), connectors need a much higher Dk value, he says. “The Dk value shouldn’t shift over time or signal performance degrades. However, adding more fillers into the compound for Dk control risks making the connector too brittle to withstand regular mating and un-mating,” Young Kim notes. Celanese carries out drop tests on its compounds to ensure this does not happen. He also notes that Dk results can vary according to the test equipment used. Celanese creates several samples with Dk values in the range that the customer might need, so all can be trialled in its specific connector design and equipment to identify the optimal grade.


CLICK ON THE LINKS FOR MORE INFORMATION: � https://x2f.com � www.henkel.com � www.ipa.fraunhofer.de � www.arburg.com � www.lanxess.com � www.dupont.com � www.eurotec-ep.com � www.tisan.com.tr � www.sabic.com � www.celanese.com � www.basf.com � www.domochemicals.com


October 2021 | INJECTION WORLD 53


IMAGE: BASF


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