E-PTFE Waterproof breathable membrane brief introduction

Waterproof breathable membrane is a product application derived from membrane separation technology. It is a special process manufactured film with selective permeability, which can allow gases smaller than the pore size of the waterproof breathable membrane to pass through under its own characteristics, but cannot allow other substances such as water droplets larger than the pore size of the waterproof breathable membrane to pass through. It is precisely because the waterproof breathable membrane has the property of allowing certain small molecules to pass through while certain large molecules cannot pass through the waterproof breathable membrane. The material of waterproof breathable membrane is generally e-PTFE, which is a thin film produced by special process of polytetrafluoroethylene. It is composed of microfiltration membrane with pore size between 0.1-10 μ m. Waterproof breathable film is mainly reflected in waterproof breathability, dustproof breathability, and bacterial prevention breathability, and is widely used in fields such as automotive, medical, environmental monitoring, packaging, and electronic sensor component protection.

Shangda SDA breathable membrane is hydrophobic and oleophobic. Its microporous structure allows gas to pass freely, balancing pressure differences while preventing rainwater, dust, oil stains, and particles from entering. The micropores of Shangda SDA breathable membrane are 700 times larger than air molecules, ensuring reliable air permeability and pressure balance; Micropores are 20000 times smaller than water droplets, effectively blocking the entry of liquids, dirt, and debris. Shangda SDA breathable film can effectively extend the service life of electronic components. In the fields of automotive components and outdoor electronic devices. The main form of Shangda SDA acoustic membrane is a waterproof acoustic membrane with adhesive backing. The back adhesive waterproof sound transmitting membrane is made by bonding the waterproof sound transmitting membrane film with double-sided tape. Generally sold in sheet or roll form. Shangda SDA waterproof and sound transmitting membrane requires a rating of IP67 or above, providing strong waterproof and dustproof performance while maintaining perfect sound quality. Shangda SDA sound transmission membrane has the following advantages: it has undergone professional sound transmission processing to ensure the lowest sound attenuation, lowest distortion, and optimal signal-to-noise ratio. Shangda SDA waterproof and transparent membrane is thin and lightweight, and can be installed in narrow spaces of equipment. Easy to install, can be installed manually or automatically.