China e-PTFE Hydrophobic Acoustic Transmission Membrane Suppliers and Factory for Superior Sound Performance
Membrane Properties
| PHYSICAL PROPERTIES | REFERENCED TEST STANDARD | UNIT | TYPICAL DATA |
|---|---|---|---|
| Membrane Color | / | / | Grey |
| Membrane Construction | / | / | ePTFE |
| Membrane Surface Property | / | / | Hydrophobic |
| Thickness | ISO 534 | mm | 0.01 ± 0.005 |
| Air Permeability | ASTM D737 (Test Area: 1 cm²) |
ml/min/cm² @ 7KPa | >5000 |
| Water Entry Pressure | ASTM D751 (Test Area: 1 cm²) |
KPa for 30 sec | >50 KPa |
| Transmission Loss (@1kHz, I.D.= 2.0mm) |
Internal Control | dB | < 1 dB |
| IP Rating (Test I.D.= 2.0mm) |
IEC 60529 | / | IP67/IP68 (Tested at 2m water depth for 30 minutes) |
| ISO Rating (Test I.D.= 2.0mm) |
ISO 22810 | / | NA |
| Operation Temperature | IEC 60068-2-14 | °C | -40°C ~ 260°C |
| ROHS | IEC 62321 | / | Meet ROHS Requirements |
| PFOA & PFOS | US EPA 3550C & US EPA 8321B | / | PFOA & PFOS Free |
Transmission Loss Curve
Model: ZZPIP-XZP20G-S
NOTE
(1) Acoustic Response and IP Grade test part dimension: I.D. 2.0 mm / O.D. 6.0 mm.
(2) The results are tested using a typical digital output MEMS microphone system and self-designed test device in ZZPIP laboratory with representative sample size. The design of the device will affect final performance.
Application
This series of membranes can be used in waterproof and acoustics membrane for portable and wearable electronic devices, such as Smart Phone, Earphone, Smart Watch, and Bluetooth Speaker, Alertor etc.
The membrane could provide the device with immersed waterproof protection and minimal sound transmission loss, keeping the device with the excellent acoustics transmission performance.
Shelf Life
Note
All data above are typical data for the membrane raw material, for reference only, and should not be used as special data for outgoing quality control.
All technical information and advice given here is based on ZZPIP’s previous experiences and test results. ZZPIP gives this information to the best of its knowledge, but assumes no legal responsibility. Customers are asked to check the suitability and usability in the specific application, since the performance of the product can only be judged when all necessary operating data are available.