Dimensional stability

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The dimensional stability (in the case of wood also: the staying power ) describes the property of materials to remain dimensionally stable under changing environmental conditions ( temperature , humidity, etc.) .

With different types of wood , the intensity and speed of swelling and shrinking are different. Due to the anisotropy of wood in the axial, radial and tangential directions, irregular deformations sometimes occur when the ambient climate changes. Types of wood with good dimensional stability have good stamina, so they change their dimensions relatively little and deform only little. Examples of this are teak ( Tectona grandis ) and thermally modified wood . Other species such as beech ( Fagus sylvatica ) and Massaranduba (Manilkara spp.) Have poor stamina and thus poor dimensional stability. The main reason for the dimensional stability of a type of wood is its density and the storage of wood constituents .

The term is also used for plastics , especially thermoplastics . Amorphous thermoplastics are dimensionally stable until the glass transition temperature is reached .

Dimensional stability is also important for textiles ; it can be increased, for example, through mercerization .

Web links

Individual evidence

  1. Information on stamina in the brochure ( Memento of the original from October 6, 2015 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. on terrace construction, Eurotec, accessed in October 2015 @1@ 2Template: Webachiv / IABot / www.euro-tec.de