Construction Manual for Polymers + Membranes by Jan Knippers

By Jan Knippers

No matter if it's as translucent sheets, extensively stretched membranes, and inflated foil cushions or in sleek, natural curves, structure at the present time is using plastics within the such a lot disparate types and for a wide selection of reasons. cutting edge technical advancements are consistently bettering its fabric houses; while, there's a transforming into new knowledge of its power as a development fabric. whereas plastics was once hired basically as a cheap version on conventional development fabrics, they're more and more seemed within the building global this present day as a major and possible replacement, be it as helping constructions, roofs, facades, or parts of inside layout and ornament. thank you largely to this inherent self-sufficiency, plastics are at present having fun with an exceptional surge in attractiveness, even one of the overseas architectural avant-garde as multiwall sheets or corrugated, fiber-reinforced panels, or as filling among glass panes. And the recent new release of ecological bioplastics additionally can pay tribute to the controversy on sustainability, ridding plastics in their lingering popularity as environmental offenders. From the background of plastics and membranes in structure to their fabric homes and necessities in building and layout, the Plastics and Membranes building handbook cuts to the chase, delivering the type of good and entire review of the topic that readers have come to anticipate from the Im element sequence. chosen undertaking examples around off the reference paintings and make it necessary for the daily lifetime of the pro planner and for each structure library Ob als transluzente Platten, weit gespannte Membranen, luftgefülltes Folienkissen oder in organisch geschwungener Gestalt: In den unterschiedlichsten Formen und Anwendungsbereichen finden Kunststoffe Verwendung in der Architektur. cutting edge technische Entwicklungen verbessern stetig seine Materialeigenschaften, gleic

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29, p. 42) In the construction industry the milky white PTFE is used for coating membranes in order to create a self-cleaning surface. Another application is the use of PTFE discs in low-friction sliding bearings for bridges. After production, PTFE cannot be remelted like other polymers, which prevents hot working. However, moulded parts and foils can be produced through sintering and extrusion. Ethylene tetrafluoroethylene (ETFE) ˉ Foil The chemical structure and properties of ETFE are basically similar to those of PTFE, but in contrast to the latter, ETFE is easy to work thermoplastically.

Natural rubbers have been known in South America for several hundred years and were later introduced into Europe. g. the Mackintosh raincoat patented in 1823. Natural rubber first became important for technical applications after the invention of vulcanisation in 1839, a process that makes rubber permanently elastic. Synthetic rubbers appeared later, initially as replacements for natural rubber and then for special applications following further developments. Elastomers (colloquially referred to as rubbers) are classed as an “intermediate polymer group” – between the non-cross-linked thermoplastics and the densely cross-linked thermosets – because of their molecular structure.

16). Only as the temperature increases further does the polymer begin to soften and decompose, lose mass (Fig. 17) and finally burn. [1] The service temperature is that to which a material can be exposed without suffering any permanent damage and at which the strength and elastic modulus are not significantly reduced. Service temperatures are specified for short- and longterm actions. e. the temperature at which the polymer changes from a stiff to a viscoelastic state, is also frequently specified for thermoplastics.

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