The composition of ETFE film material is ethylene-tetrafluoroethylene * * * polymer, which is a transparent film material without fabric substrate, and its elongation can reach 420% ~ 440%. The light transmission spectrum of ETFE film material is similar to glass (commonly known as soft glass).
ETFE membrane material is suitable for building roofs or walls that need sufficient indoor sunshine. The transmission spectra of ETFE film material and glass are basically the same, with high ultraviolet transmittance and visible light transmittance >: 95%. By printing shading film on the surface and changing the film thickness, the light and ultraviolet transmittance can be controlled, and the transmittance can be controlled between 50% and 96%.
The ETFE membrane material is made into air heat insulation membrane surface, which has good heat insulation performance.
Advantages and disadvantages of etfe membrane:
Advantages:
1, which has good fracture and tear resistance.
2. The strength in the longitudinal and vertical directions is relatively balanced, and the uniformity of the membrane material is good. ?
3. The light transmittance is high, which can reach over 95%.
4. Good self-cleaning, dustproof and weatherproof, and the interval of manual cleaning is much longer than that of PVC and PTFE films.
5, excellent anti-aging ability, service life of more than 25 years.
6, excellent chemical corrosion resistance, can be used in special environments, and can resist most acids and bases.
7. Excellent climate adaptability, which can be directly exposed to -200℃ ~+ 150℃.
8. It has good impact resistance and wear resistance, and is also suitable for outdoor environment such as flying sand and hail.
9, good flame retardancy, good insulation performance, fire rating of B 1.
10, recyclability, and the film material can be reused after hot melting.
Disadvantages:
Although the tensile strength and tear strength of 1 are higher, they are far lower than those of PVC and PTFE films, so the span of the structure is smaller than that of fabric-like film structure.
2, when using inflatable, should have the corresponding mechanical equipment and electrical equipment, high maintenance costs in the process of use.
3. High technical barriers, few manufacturers and high material prices.