MECHANICAL BEHAVIORS OF POLYURETHANE-UREA ELASTOMERIC FIBERS UNDER STATIC STRETCHING DEFORMATION

WANG Dexi; R. E. Lyon; R. J. Farris

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MECHANICAL BEHAVIORS OF POLYURETHANE-UREA ELASTOMERIC FIBERS UNDER STATIC STRETCHING DEFORMATION

Papers | Updated：2021-06-21

- MECHANICAL BEHAVIORS OF POLYURETHANE-UREA ELASTOMERIC FIBERS UNDER STATIC STRETCHING DEFORMATION
- Vol. 4, Issue 3, Pages: 262-273(1986)
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- Published：20 September 1986
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WANG Dexi, R. E. Lyon, R. J. Farris. MECHANICAL BEHAVIORS OF POLYURETHANE-UREA ELASTOMERIC FIBERS UNDER STATIC STRETCHING DEFORMATION[J]. 1986, 4(3): 262-273.
DOI：

WANG Dexi, R. E. Lyon, R. J. Farris. MECHANICAL BEHAVIORS OF POLYURETHANE-UREA ELASTOMERIC FIBERS UNDER STATIC STRETCHING DEFORMATION[J]. 1986, 4(3): 262-273. DOI：

摘要

The mechanical behaviors of polyether (ET) and polyester (ES) soft segment urethane-ureaelastomeric fibers constrained at different levels of elongation have been investigated by means ofdynamic mechanical tests and force-temperature measurements. The dynamjc mechanical re-sponse of the ET urethane-urea showed some difference from that of the ES as a function of exten-sion ratio. For force-temperature measuring the existence of a low temperature transition corre-sponding to the glass transition (Tg's) of the ester or ether soft segments

stree-softening temperature(Ts) and initial melting temperature(Tmh) of hard segment crystallites was observed.The result of cyclic testing of a constrained sample as a function of temperature indicated that the irreversible decrease in stress implied a permanent change in sample microstructure.

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