作者: Kim Lesley Alderson , Virginia Ruth Simkins
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摘要: An auxetic material, which has a negative Poisson ratio so that it the property of expanding or contracting transversely to direction in is extended compressed, made filamentary fibrous form. A suitable process involves cohering and extruding heated polymer powder cohesion extrusion effected with spinning produce filaments. Typically temperature sufficient allow some degree surface melting yet not high enough enable bulk melting.