The Difference Between ETFE Membrane and PTFE Membrane

Update:15 Jan 2018

ETFE chemical name ethylene - tetrafluoroethylene copol […]

ETFE chemical name ethylene - tetrafluoroethylene copolymer, is a fluorine-containing polymer thermoplastic material is artificial high-strength fluoropolymer, ETFE film material directly from the film. ETFE membrane has good durability, easy cleaning and stability, is a typical non-woven film, is currently the most advanced film material. National Stadium is the selection of 0.25 mm thick, transparent colorless printing point ETFE membrane. PTFE Chemical Name PTFE, is a chemically inert material, based on glass fiber to form a PTFE membrane. PTFE also has excellent durability, easy cleaning and stability. National Stadium selection of PTFE membrane according to the different locations for the ceiling area of the sound-absorbing membrane and the inner ring of the waterproof membrane. Tested, ETFE membrane and PTFE membrane fire performance can reach B1 level, flame retardant materials.

The most prominent feature of PTFE membranes is high strength, medium strength PTFE membrane thickness of only 0.8mm, but its tensile strength has reached the level of steel. And the lower modulus of elasticity, is conducive to the formation of complex membrane surface modeling. Wide temperature range, can be used in the temperature range of -70 ℃ ~ 230 ℃; Has a unique optical properties, the incident light during the day into a natural warm light, to prevent glare, no shadow, uniform light distribution. There is almost no penetration of UV light, preventing the fading of interior materials and equipment. High reflectivity at night makes the room with excellent lighting effects, reducing power consumption, but also bring out the brilliant buildings in the night sky.

"ETFE" is the English abbreviation of Ethylene Tetra Fluoro Ethylene, the Chinese name is ethylene - tetrafluoroethylene copolymer. ETFE membrane has high tensile strength, impact strength and tear resistance. ETFE film thickness is usually 0.05 ~ 0.25mm. As the thickness increases, the hardness of the film will increase, but also more brittle, increasing the processing difficulty. A typical use of ETFE material is to "weld" two or three layers together and transport them to the jobsite. Then inflate them to expand into a pillow. Made of fluoroplastic, it can also be pre-tensioned like fabric webs. Resistance to temperature changes, can be directly exposed to -200 ℃ -150 ℃ temperature. Through the steel structure, aluminum alloy structure or cable network can be connected together to form a large air cushion cover. As far as each cushion is concerned, it is an inflatable structure; and for the entire structure, each cushion unit is equivalent to the envelope. Need to constantly monitor and replenish pressure.