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Space membrane structure design: the membrane material composition and classification
author£º time£º5/6/2011 5:44:07 PM visits£º

More simply, the membrane is coated with a fluorine plastic cloth fabric bonded together film material in accordance with a specific process. The fluorine coating material used with PTFE (polytetrafluoroethylene), PVDF (polyvinylidene fluoride), PVC (polyvinyl chloride) and the like. The main cloth fabric with polyester filaments (polyester PES) and two kinds of glass fibers.

Membrane adhesive coating and the substrate is to be combined overall composition. Building structure is mostly used in membrane calender molding and scraping forming. The so-called calendering is selected by a soft PVC plastic calender after refining investment, according to the desired thickness, width rolling film, bonded immediately with cloth, and then after ginning, cooling can be obtained rolling membrane. And Scraping molding, sucked PVC paste evenly on the cloth or scrape, plus heat treatment can be obtained Scraping membrane, is the use of universal direct scraping blade, there is also a roll-scraping.

The surface coating (Coating) and fabric substrate (Layer) different membrane materials are divided into three categories. (1) A class of membrane material is deposited on a glass fiber cloth polytetrafluoroethylene resin (PTFE), and chemical properties of these membranes is extremely stable, open-air life of more than 25 years of non-combustible material (through Class A fire test) . (2) Type B silicone coating film material is deposited on the glass fiber cloth, due to the poor performance of the membrane itself, are substantially longer in use. (3) C type film material is coated on a polyester long polyvinyl chloride (PVC), these membranes by natural conditions such as sun and rain and so a greater impact, the general life of 10 to 15 years , is flame retardant materials ((B1 level fire by testing).

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