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Structure and Properties of Segmented Polyurethane-Urea Elastomers with Binary Hard Segment Component Which is Exhibited by Chain Extender
Segmented polyurethane-urea Mooney-Rivlin plot Hydrogen bond
2009/4/29
Segmented polyurethane-urea (SPUU) is a block copolymer which consists of hard and soft segments. SPUU films with different ratios of ethylenediamine (EDA) and propylenediamine (PDA) as chain extend...
Analysis of the Helix Number of Hard Twisted Yarn in Cotton Crepe Fabrics
Helix number Hard twisted yarnTwisting moment Crepe fabric
2009/4/21
In this paper, the helix number of hard twisted yarn was analyzed by both theory and experiment. The shape of hard twisted yarn was supposed as the helix and the helix number was examined from the dyn...