China e-PTFE Hydrophobic Acoustic Transmission Membrane - Leading Suppliers & Factory for Quality Solutions
Membrane Properties
| Physical Properties | Referred Test Standard | Unit | Typical Data |
|---|---|---|---|
| Membrane Color | / | / | Grey (灰) |
| 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 (2m water depth test for 30 mins) |
|
ISO Rating (Test I.D. = 2.0mm) |
ISO 22810 | / | NA |
| Operation Temperature | IEC 60068-2-14 | ℃ | -40℃ ～ 260℃ |
| ROHS | IEC 62321 | / | Meet ROHS Requirements |
| PFOA & PFOS | US EPA 3550C & US EPA 8321B | / | PFOA & PFOS Free |
Transmission Loss Curve
Transmission Loss of ZZPIP-100G20 acoustics membrane < 1dB @ 1KHz, and < 2.5 dB in the whole frequency range.
AYN-100G20-A
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
Shelf life is 5 years from the date of receipt for this product as long as this product is stored in its original packaging in an environment below 80° F (27° C) and 60% RH.
Technical Disclaimer
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.
Frequently Asked Questions
What is the typical transmission loss of the ZZPIP-100G20 acoustic membrane?
The transmission loss of the ZZPIP-100G20 acoustic membrane is less than 1dB at 1KHz, and remains under 2.5 dB across the entire frequency range.
What waterproof IP rating does this membrane provide?
It meets IP67 and IP68 standards, which includes passing water immersion tests at a depth of 2 meters for 30 minutes.
What is the operating temperature range for the ePTFE membrane?
The membrane is designed to operate reliably in extreme environmental temperatures ranging from -40℃ up to 260℃.
What are the primary applications of this series of membranes?
These membranes are widely used in portable and wearable electronic devices requiring both waterproof protection and high acoustic transmission performance, such as smartphones, earphones, smartwatches, Bluetooth speakers, and alarms.
How should the membrane be stored, and what is its shelf life?
The product has a shelf life of 5 years from the date of receipt, provided it is kept in its original packaging in conditions below 80° F (27° C) and under 60% relative humidity (RH).
Are these acoustic membranes compliant with environmental standards?
Yes, the membranes meet all ROHS requirements and are verified PFOA & PFOS free under US EPA test standards.