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BFCC Featured Partners: TY Membrane Fabric Materials

Bird's Nest Memberane Structure by PTFE and ETFE
Bird's Nest (China's National Stadium for Beijing 2008 Olympics).  Its outer layer of membrane was
created by using 884 individual ETFE panels, covering a total of 38,500 square meters, and
its inner layer consists of 1044 PTFE panels covering up to 53,000 square meters
of roofing area. The PTFE frame, along with other design concepts, help to
ensure that every fan sitting in any corner of the stadium will be able to
hear announcements made over the broadcasting system clearly. This
special membrane can also help lighting within the stadium and
effectively diminish glare and shadowing, allowing
for a more favorable competition environment.

Water Cube (The National Aquatic Center; above and below picture), the world's largest and most complex
Ethylene Tetra Fluoride Ethylene) project by now.

Water Cube ETFE Membrane Structure

Coca-Cola 2008 Beijing Olympic Showcasing Pavilion
Coca-Cola Beijing 2008 Olympics Showcasing Pavilion, a two-layer PVC membrane project
Membrane Fabric Materials

Mechanics Properties of Membrane Material

The main characteristics of membrane structure materials are their high-strength, fire-retardant, durable and self-cleaning.

The material is usually a coated fabric composed of two parts, the fabric and the coating. The fabric is basically made of high strength polyester or glass fibers, woven in two different ways. The fabric material and the method of weaving determine the material’s mechanical properties such as tensile strength and tearing resistance. For the coating, mainly PTFE or PVC coatings are used, that enhances the performance and durability of the membrane material and add qualities such as self-cleaning and UV reduction etc.. For PVC membrane materials, a surface layer of fluoride or silicon is often applied to enhance its  fire resistance, durability, waterproofing and self cleansing.

Physical Properties of Membrane Material

1.High strength
2.Fire retardant
5.Noise and thermal insulation

Classification of Membrane Material

Membrane materials are made of different components and can be divided into three categories, according to their chemical composition as follows:

PVC Membrane Materials

PVC is Poly Vinyl Chloride. In general PVC membrane materials are composed of high-strength polyester fibers with both sides coating of PVC. In order to protect the PVC coating’s chemical stability under the sun, a relatively stable Polyvinylidene (PVDF) top layer is applied, thereby improving the durability as well as the self-cleaning of the PVC membrane material. The life span of PVC membrane material is more than 20 years. It has certain self-cleaning properties, B1 fire resistance level, and a tensile strength between 2500/2200 N/5cm and 10000/8000 N/5cm depending on the material’s thickness (0.5-1.14 mm). The transparency reaches from 5.5% to 12% . The transparency of the inner membrane material can reach more than 50%.

PTFE Membrane Materials

PTFE is Poly Tetra Fluoride Ethylene. In general, PTFE membrane materials are made of high strength glass fiber fabric with a PTFE coating on both sides. PTFE itself has good chemical stabilities and therefore does not need any other surface protection. The life span of PTFE membrane materials is more than 30 years, it has good self cleaning properties, A1 fire-resistance level and a tensile strength ranging form 4800/3300 N/5cm to 11000/9000 N/5cm depending on material thickness (0.37-1.00 mm). The transparency of the material is 10%-22%.

ETFE Type Membrane Materials

ETFE is Ethylene Tetra Fluoride Ethylene. ETFE membrane materials do not have a fabric core and just consist of a film of ETFE. The material has a good chemical stability and therefore does not need any other surface protection. The material life of ETFE is 30 years and above, it has good self-cleaning properties, an A1 fire- resistance level, a tensile strength of 45-60 N/mm2 depending on material thickness (0.012-0.5
mm) and a transparency of 95%.

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Membrane Structure for Large Stadium Membrane Structure for Big Event Membrane Structure for Wall Cladding Membrane Structure - Steel Structure Membrane Material, Fabrication, & Installation
Membrane Structure for Large Stadium Membrane Structure for Big Event Membrane Structure for Wall Cladding Membrane Structure - Steel Structure Membrane Material, Fabrication, & Installation

BFCC Featured Partners
Membrane Structure North China Construction Company RMP Exhibition, Exhibition, & Event Design Shoujian (Capital Steel) International Vintage House of Japan T-Horse Design, Fabrication, Installation Glories Exterior
Membrane Structure Turnkey Project RMP Exhibition General Contracting Commercial Design Classical Interior Classical Exterior

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