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膜结构的膜是什么材料?
来源:http://www.sdcscp.com/ 发布时间:2022-04-27
膜结构(Membrane)是20世纪中期发展起来的一种新型建筑结构形式,膜结构是由多种高强薄膜材料及加强构件(钢架、钢柱或钢索)通过一定方式使其内部产生一定的预张应力以形成某种空间形状,作为覆盖结构,并能承受一定的外荷载作用的一种空间结构形式。在我们的身边用途非常广泛,比如车棚、看台、景观等。
Membrane structure is a new type of building structure developed in the middle of the 20th century. Membrane structure is a spatial structure form which is made of a variety of high-strength membrane materials and reinforcing members (steel frame, steel column or steel cable) to produce a certain pre tensile stress in order to form a certain spatial shape as a covering structure and can bear a certain external load. It is widely used around us, such as car shed, grandstand, landscape, etc.
膜结构作为一种新型的建筑结构形式,那么膜结构的“膜”是一种什么材料呢?
Membrane structure is a new type of building structure, so what kind of material is the "membrane" of membrane structure?
膜结构的膜材料主要是PVDF、PTFE、ETFE三大类。其中PVDF、PTFE两种用的多。
The membrane materials of membrane structure are mainly PVDF, PTFE and ETFE. PVDF and PTFE are mostly used.
膜材:
Membrane material:
,英文缩写PVDF,主要是指偏氟其他少量含氟乙烯基单体的共聚物,它兼具氟树脂
PVDF, the English abbreviation, mainly refers to the copolymer of vinylidene fluoride and a small amount of other fluorine-containing vinyl monomers, which is both fluororesin
和通用树脂的特性,除具有良好的耐化学腐蚀性、耐高温性、耐氧化性、耐候性、耐射线辐射性能外,还具有压电性、介电性、热电性等特殊性能,是含氟塑料
And general-purpose resin. In addition to good chemical corrosion resistance, high temperature resistance, oxidation resistance, weather resistance and radiation resistance, it also has special properties such as piezoelectric, dielectric and thermoelectric properties. It is a fluoroplastic
膜材:
Membrane material:
聚四氟乙烯(Teflon或PTFE),俗称“塑料王”,是由四氟乙烯经聚合而成的高分子化合物,具有优良的化学稳定性、耐腐蚀性、密封性、高润滑不粘性、电绝缘性和良好的抗老化耐力。
膜结构景观
Polytetrafluoroethylene (Teflon or PTFE), commonly known as the "king of plastics", is a polymer compound polymerized from tetrafluoroethylene, which has excellent chemical stability, corrosion resistance, sealing, high lubrication, non viscosity, electrical insulation and good anti-aging resistance.
耐高温——使用工作温度达250℃。
High temperature resistance - operating temperature up to 250 ℃.
耐低温——具有良好的机械韧性;即使温度下降到-196℃,也可保持5%的伸长率。
Good mechanical toughness at low temperature; Even if the temperature drops to - 196 ℃, the elongation of 5% can be maintained.
耐腐蚀——对大多数化学药品和溶剂,表现出惰性、能耐强酸强碱、水和各种有机溶剂。
Corrosion resistance - for most chemicals and solvents, it is inert and resistant to strong acids, alkalis, water and various organic solvents.
耐气候——有塑料中佳的老化寿命。
Weather resistance - it has a good aging life in plastics.
高润滑——是固体材料中摩擦系数低者。
High lubrication - it is the one with low friction coefficient in solid materials.
不粘附——是固体材料中小的
Non adhesion - it is small and medium-sized in solid materials
表面张力不粘附任何物质
Surface tension does not adhere to any substance
膜材:
Membrane material:
乙烯-四氟乙烯共聚物
Ethylene tetrafluoroethylene copolymer
,俗称:F-40。
, commonly known as F-40.
是强韧的氟塑料,它在保持了PTFE 良好的耐热、耐化学性能和电绝缘性能的同时,耐辐射和机械性能有很大程度的改善,拉伸强度可达到50MPa,接近聚四氟乙烯的2倍。
It is a strong and tough fluoroplastic. While maintaining the good heat resistance, chemical resistance and electrical insulation properties of PTFE, it has greatly improved its radiation resistance and mechanical properties. The tensile strength can reach 50MPa, which is close to twice that of polytetrafluoroethylene.
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