SD-005 waterproof sound-transmitting membrane

Product Introduction

Shangda SDA(e-PTFE) film adopts expanded polytetrafluoroethylene to achieve uniform stretching and three-dimensional network structure.

The diameter of the micropores is 0.1-10μm, the molecules of air and water vapor are 0.0004μm, and the pore diameter of the (e-PTFE) membrane is 250-25000 times larger than the diameter of the gas, so the gas can pass through, while the diameter of capillary rain is 500 μm, which is hundreds of times larger than the diameter of the micropores of the mem

Name	Function	Material	color	protection level	aperture (& micro;m)	air permeability @ 7KPa ml/cm .min	thickness (& micro;m)	Temperature Range
SD-005 waterproof sound-transmitting membrane	Hydrophobic tone	e-PTFE nylon, nylon	white, black	IP67	≦ 3.0	2500~3100	150~180	-50 ℃ ~ 110 ℃

Design and Dimensions

Product Features

1. High performance ePTFE membrane has higher particle capture rate

2. Large flow when the inlet pressure is low; heat dissipation in the micro environment

3. Regulate moisture; equalize pressure

4. Repels water and oil; high solids content; chemically inert

working principle

Shangda SDA breathable membrane is hydrophobic and oleophobic, and its microporous structure allows gas to pass freely, which can balance the pressure difference and prevent rainwater, dust, oil and particles from invading.

Shangda SDA breathable membrane are 700 times larger than air molecules, ensuring reliable air permeability and pressure balance. Micropores are 20,000 times smaller than water droplets, which can effectively block liquid, dirt and debris from entering. The SDA breathable film can effectively extend the service life of electronic components. In the application of auto parts, outdoor electronic equipment and other fields.

Shangda SDA(e-PTFE) film adopts expanded polytetrafluoroethylene to achieve uniform stretching and three-dimensional network structure. The diameter of the micropores is 0.1-10μm, the molecules of air and water vapor are 0.0004μm, and the pore diameter of the (e-PTFE) membrane is 250-25000 times larger than the diameter of the gas, so the gas can pass through, while the diameter of capillary rain is 500 μm, which is hundreds of times larger than the diameter of the micropores of the membrane.

these micropores, which are only one twenty-thousandth the size of a drop of water, prevent water, dirt and debris from entering (e-PTFE) the membrane. By allowing air to enter and leave the closed enclosure freely, equalizing pressure and preventing water, corrosive liquids, salts and particles from entering the enclosure and damaging the interior of the sealing equipment, our sealing equipment becomes more reliable, safer and more durable.