Turnkey Dielectric Spectroscopy

Transcription

1 Turnkey Dielectric Spectroscopy Measure dielectric constant & tan as a function of Temperature & Frequency Capability This low-cost turnkey test system can be used to measure capacitance (dielectric constant) and dissipation factor or other types of complex impedance parameters of dielectric materials as a function of temperature and frequency. It includes a temperature chamber, test fixture with five specimens, Agilent LCR meter 8A (or others), a laptop computer with test control program + connection cables. The test fixture is integrated with a temperature chamber with shielded low impedance high temperature fixture. Temperature High: 5 C, all connections are rated for 5 C with Teflon or Kapton insulation. Temperature Low: the chamber has liquid nitrogen cooling adapter < -5 C test. Frequency: recommended for Hz to MHz (TP shielded connections) with Agilent 8 LCR meter. Also work with other meters (Keysight E98, 9A etc.) High Sensitivity: can accurately measure dielectric dissipation factor tan <. Multiple Specimen Test: during one temperature ramp, up to samples can be tested with shielded relays to automatically switch between samples. Specimen is directly connected to LCR meter without relay for high sensitivity test. Grounding electrode made with 99.9% silver plate for high electrical conductivity (Ag O is still conductive). Top probes are spring loaded and gold-plated. The force of the spring can be adjusted by users. Perfect for measuring soft polymer samples with minimal damages. One additional thermocouple installed close to samples under test and the temperature can be recorded by the test program. The air temperature of the chamber is also recorded by the LabView program. Include computer program that automatically control the test temperature, frequency, and time. TSDC Module [Option] Dielectric Module Test Fixture & Chamber TSDC function can be added with cost as low as $, (thermally stimulated depolarization current) Applications. Develop new dielectric and ferroelectric polymers and nanocomposites.. Complementary to DMA (dynamic mechanical analyzer), study polymer relaxation process, glass transition process, aging/annealing process,. Study the curing kinetics of thermosetting materials. Contact: energy@polyktech.com lab.com Page

2 Example Test Results. Novocontrol Test Results m 9 m m khz All mm diameter, Au Electrode A High-T Polymer with Low DF PolyK Fixture/Oven with 8A Capacitance (nf) k k k M ETFE Film, ~ nf, m thickness 5 mm diameter, C/min Cooling APC 855Ppolycrystalline PZT Silver Electrode k k k % % % %.5..5 K Benchmark with Novocontrol (Concept 8, α Analyzer) Polymer film samples with mm diameter and -9 µm thickness (K ~), with nm thick gold on both surfaces, ~ pf capacitance, measured by both Novocontrol and PolyK test system. PolyK test system measured similar dielectric loss tan as the Novocontrol, even though the tan is lower than % m Thick Flexible Glass..5 khz khz khz MHz % Contact: energy@polyktech.com lab.com Page All these films/materials are available for sale for R&D. K khz Cooling from 5 o C to 7 o C Kapton 7.8 m thick with relay A Thermoplastic Polyimide with Tg of C, soluble in NMP k k k M Hz.%.%.%..% Tan.5%. Tan ( )

3 Example Test Results: Fluoropolymers 8 P(VDF TrFE) 8/ mol Cooling from C to C, then heat to 5 C Cooling k Heating k k M PolyK P(VDF TrFE CFE) k k k M PolyK High-K Dielectric khz k k k M Hz Electroactive Polymers EAP. 8 PolyK has a collection of various fluoropolymer resins and films for R&D customers. Some films are either uniaxially oriented or biaxially oriented P(VDF TrFE) 8/ mol Cooling from C to C, then heat to 5 C k k k M Cooling Heating 8 Cooling heating PVDF TrFE CFE 5 m k k k M Specimens Measured with Automatic Relay During C/min Heating PVDF, nf/ khz 9 Dielectric Loss PolyK has various high temperature dielectric materials and films for R&D customers. We are specialized in ultrathin film with thickness from um to um. Contact: energy@polyktech.com lab.com Page

4 Example Test Results: Isothermal Test PEEK P No., 8 pf m Thick, mm Au 8 C PEEK, 8 C Four specimens measured during the same run, they have very similar K and tan Confirming the system reproducibility N N N N PEEK P, m Thick, mm Au. 8 PVDF No., nf 8 C.%.8%.%.%.%.%.. PolyK is specialized in high voltage dielectric materials and test systems. We offer: () Ferroelectric and Polarization Loop measurement system; () High voltage high temperature leakage current and pyroelectric test system; () Capacitor Charge discharge test system; () High voltage and dielectric test services; (5); DSC/DMA/FTIR test services; () Film Processing services (extrusion, MDO); (7) PVDF Piezo film PEEK P No., 8 pf m Thick, mm Au 8 C Contact: energy@polyktech.com lab.com Page PVDF, C Four specimens measured during the same run, they have very similar K and tan Confirming the system reproducibility N N N N C PVDF No., nf.

5 Current Customers University of Georgia Korea Electrotechnology Research Institute PolyK is specialized in high voltage dielectric materials and test systems. We offer: () Ferroelectric and Polarization Loop measurement system; () High voltage high temperature leakage current and pyroelectric test system; () Capacitor Charge discharge test system; () High voltage and dielectric test services; (5); DSC/DMA/FTIR test services; () Film Processing services (extrusion, MDO); (7) PVDF Piezo film Contact: lab.com Page