ISSN:
1573-8493
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Technik allgemein
,
Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
Notizen:
Conclusions By treatment of undried polyphenyleneoxadiazole yarns with concentrated sulfuric acid under isometric conditions, it is possible to raise their strength by 20–30% and their elongation at break 40–50%. The improvement in physicomechanical properties of the yarns which have been treated with acid is caused by a reduction in internal stresses, an improvement in the interlayer packing of the macromolecules fragments, and an increase in the degree of orientation of the macromolecules.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00543774
Permalink