The invention relates to a sheathcore composite fibre of chitin and cellulose and a preparation method thereof.
本发明涉及一种甲壳胺与纤维素的皮芯型复合纤维及其制备方法。
2
The FDY production technology of sheathcore fiber is studied, the effect of alkali treatment with different concentration, different time on the mechanical properties are analysized.
Dr Hess envisages a ray of light travelling down an optical fibre made from two materials: a core with a negative refractive index and an outer sheath with a positive one.