Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

2 2000

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: acrylic fiber

Sortuj według:

Ogranicz wyniki do:

Urea treatment of acrylic fibers in case of dyeing with anionic dyes

Popescu V.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

2000

z. 59

117-126

Anionic dyes can be used in dyeing of acrylic fibers with cationic nature (Creslan, Acrilan) or in case of acrylic fibers subjected to introduction of such basic groups into the polymer macromolecules by chemical treatments. In this paper are presented the possibilities of acrylic fibers dyeing with anionic dyes by pre-treatment, which lead to chemical structure modification. The samples treated with urea in addition with sodium hydroxide, hydrogen peroxide, ethylene carbonate (EC) and ethylene alcohol (EA) were further dyed with anionic dyes. A comparison was made between the colour intensity of acrylic samples pre-treated and dyed and that of acrylic fibers dyed without any chemical treatment. Experiments were made considering the influence of pre-treating time, urea concentration and additive concentration. Results obtained showed a good level of dyeing and high crocking and washing fastness.

Tensile behaviour of acrylic fibres and yarns: influence of the textile manufacturing process

Manich A. M., Ussman M., Bosch T., Castellar de M. D.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

2000

z. 59

135-143

Vonnel Acrylic fibres from FISIPE were submitted to textile manufacturing from row material to dyed yarns. Changes on tensile behaviour along the manufacturing process have been monitorised through viscoelastic modelling using the modified Vangheluwe model. Sonic Modulus on yarns has been also measured and differences from raw to dyed acrylic yarns can be seen and they are in accordance with changes in the model parameters.