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Paper Information

Journal:   AMIRKABIR   Winter 2004 , Volume 15 , Number 57-D; Page(s) 233 To 243.
 
Paper: 

STUDY OF POLYPROPYLENE FIBRES DAMAGE IN ROTOR SPINNING

 
 
Author(s):  GHARAH AGHAJI A.A., SABETI P.
 
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Abstract: 

Study on the spinning behaviour of polypropylene fibres during rotor spinning is very important and may help us to find the appropriate ways to improve the spinning properties of fibres. In this study, mechanical and thermal damage of PP fibres during the various stages of rotor spinning line is investigated. The breaking strength and surface morphology of processed fibres in carding, drawing and rotor frame were studied and compared with those properties in unprocessed fibres.
These studies show that some test fibres are damaged when contact the surfaces with heat due to processing well above the Tg of the fibres. The results of the study on the tenacity and breaking elongation of test fibres indicate that the mechanical properties are also deteriorated. The results of FTIR tests and stress-strain curves show some interstructure changes in some samples, which can be seen as partial changes in the crystalinity and elastic modulus. Investigation on the surface morphology of the damaged fibres shows some localized damaged areas in the form of compressive deformations, melt points, peeling off of the surface, voids and cracks. In general the results of various experiments confirm the occurrence of thermal damage in the rotor spinning process which affects the spinning behaviour inversely.

 
Keyword(s): THERMAL DAMAGE, MECHANICAL DAMAGE, POLYPROPYLENE FIBRES, ROTOR SPINNING, TENACITY, BREAKING
 
References: 
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