ePTFE film material
description of products
The expanded polytetrafluoroethylene (ePTFE) microporous film material is generally made of polytetrafluoroethylene resin by bidirectional stretching method, which mainly includes paste extrusion, expansion and stretching into pores and heat setting processes. The obtained microporous membrane material not only has excellent acid and alkali resistance, high and low temperature resistance, hydrophobic and other properties, but also has a special fibrous microporous structure, small and uniform membrane pore size, porosity of more than 80%, excellent mechanical properties, showing excellent waterproof, air permeability, moisture permeability and other characteristics. It is widely used in electronic products, special clothing fabrics, industrial filtration, biomedical and other fields.
Electronic waterproof ePTFE microporous film, microporous structure is stable, small and uniform pore size, with excellent liquid barrier and gas transmission characteristics, to meet the traditional sealing material waterproof requirements at the same time, but also to balance the pressure and temperature changes in the sealing chamber of electronic products with environmental changes, as a pressure balance film; In addition, while meeting the IPX8 waterproof rating, it can also achieve high-quality sound transmission and be used as an electronic sound transmission film (Mic film).
technical index
item | units | test criteria
| norm | ||
Equilibrium membraneDM3087D | MicmembraneDM3089D | gas-permeable membraneDM3020D | |||
thickness | μm | GB/T 3820 | 10-15 | 10-15 | 4-8 |
Waterproof and dustproof grade | (Φ1.6 mm) | IEC 529-598 | 5atm, 50m 30min | 5atm, 50m 30min | / |
Air permeability | ml/cm2/min@7Kpa | GB/T5453 | >200 | >200 | >150mm/s@125Pa |
Loss of sound | dB | / | / | <5dB (Φ1.6 mm) | <1dB |
manner of packing
1. This product is supplied in roll form with frame support, which is convenient for automatic production of subsequent film coating.
2. The film roll is wrapped in dustproof bag, PE bag and carton in turn. The carton can be opened in a normal environment, and the internal packaging must be opened in a clean environment to prevent the film from being polluted.
matters need attention
The product must be kept sealed before use; Once unpacked, it must be stored in an environment with a temperature of 23±5 ° C and a relative humidity of 50±5%, and used as soon as possible.
Store the product in a cool and ventilated place, away from fire, heat and dust.
Products in use to avoid bumping, extrusion, the surface is prohibited to touch with hands, so as not to cause pollution.
The product should be handled gently during transportation to prevent damage from extrusion.
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