PTFE膜材料的特点：

1.强度高、耐久性好、防火难燃、自洁性好，而且不受紫外光的影响，其使用寿命在25年以上。

2.具有高透光性，并且透过膜材料的光线是自然散漫光，不会产生阴影，也不会发生眩光。

3.对太阳能的反射率高，所以热吸收量很少。即使在夏季炎热的日光的照射下室内也不会受太大影响。

PTFE的化学性能Chemical Properties:
Resistant against the strongest corrosive substances, like hydrochloric acid, hydrofluoric acid, sulphuric acid and nitric acid, hot sodium hydroxide solution or nitrogen oxides. PTFE is not soluble in most common solvents, such as alcoholes, esters, ketones and petrol.
PTFE能抵抗如盐酸、氢氟酸、硫酸、硝酸、热得氢氧化纳溶液或氮氧化物等最强腐蚀性物质。PTFE不能被一般常用的溶剂溶解，如酒精、酯类、酮类和汽油等。

PTFE( Polytetrafluorethylene)的分子结构Moleculare Structure:
• PTFE is characterized by long chain molecules consisting of recurring tetrafluorethylene monomer units.
• The carbon-fluorine bond has a dissociation energy of 460 kJ/Mol
and represents one of the strongest bonds in organic chemistry.
• The PTFE chain adopts a slightly twisting helix with a carbon-based core and an outer sheath of fluorine atoms which completely shields the chain backbone from chemical attack.
PTFE是由四氟乙烯单体重复聚合而成的长链分子结构。
氟碳化学键键能有460 kJ/Mol，是有机化学界里最强的化学键。

PTFE由2条螺旋状的聚合链缠绕在一起，中心是碳碳化学键，外面由氟原子组成了一个完整的保护层，有效的防止了其它化学物质的进攻。

耐光/耐候性Light/Weather Resistance:
PTFE is totally resistant to UV-radiation, weather and environmental influences.
PTFE-Membranes show no ageing orebrittlement due to UV-radiation.
This performance is achieved without plasticizer, antioxidants, UV-absorbers etc. which could migrate out.
PTFE能完全抵抗紫外线、气候及环境的影响。
PTFE不会被紫外线照射而老化变脆。
PTFE材料中不含容易移出的增塑剂、抗氧化剂、紫外线吸收剂等。

PTFE膜材表面自洁性能Surface Self-cleaning Properties
The forces of attraction between adjacent chains of PTFE are very weak due to the fluorine envelope of the chain molecules which cannot be easily polarized. The molecules are macroscopically nonpolar. The surface energy is one of the lowest known (approx. 18.5 mN/m) and leads to the anti-adhesive nature of PTFE. Therefore PTFE-Membranes exhibit good self-cleaning and water repellant properties. (contact angle > 130o)
由于PTFE由氟原子的密封了分子链，它对其它物质的吸引力是非常若的。在宏观世界中，PTFE的表面能是已知材料中最低的，约18.5 mN/m，具有不粘性能。因此，PTFE膜材表现出非常好的自洁和水排斥性能（接触角> 130o）

PTFE膜材变白 Bleached by sunlight
PTFE membrane is PTFE coated Fiberglass fabric material. PTFE is a very inert material if it is solid state. We have to melt it then coat it on the fiberglass fabric, the coating near 10 times. Fiberglass always becomes yellow and yellow during the coating process in the baking boxes(temperature is more than 400℃), so this kind of material always is brown color when produced.
But PTFE membrane can absorb UV Light from Sunlight, then become whiter and whiter, it can be bleached fully by sunlight, more UV is quicker. In South, needs about 4 months; in North, needs about 6 month.
PTFE膜材是PTFE涂层玻璃纤维材料。PTFE在固态下是非常惰性的，我们在涂层时必须将其熔化，再涂层到玻璃纤维上，熔化温度在400℃以上，涂层次数需要10次左右。在这个过程中，玻璃纤维会因为高温变黄，涂层次数越多颜色越深，因此，PTFE膜材刚生产出来时都是棕色的。
但是，PTFE膜材能吸收太阳光中的紫外线，膜材越变越白，最终能被太阳光完全漂白。紫外线越强变白越快。在南方，一般4个月，北方6个月。

PTFE膜材使用寿命 Useful-life
PTFE membrane is the material that PTFE coated Fiberglass fabric, PTFE is very inert material and has self-clean ability, the fiberglass fabric is inorganic material and low elongation. So, PTFE membrane’s Useful-life can surpass 25 years.
PTFE膜材是PTFE涂层玻璃纤维布而成，PTFE是很惰性的材料并且有自洁性，玻璃纤维是无机材料且弹性很小，因此，PTFE膜材的使用寿命可达到25年以上。