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Improving the dyeability of polyimide by pretreatment with alkali.
- Source :
- Coloration Technology; Dec2016, Vol. 132 Issue 6, p481-487, 7p
- Publication Year :
- 2016
-
Abstract
- Polyimide fabric, as a high-performance fabric, possesses advantageous properties, such as outstanding thermal stability and chemical resistance, but has poor dyeability. In this paper, polyimide fabric was dyed successfully with disperse dyes by high-temperature and high-pressure dyeing in the presence of a swelling agent and auxiliaries. Under optimal dyeing conditions, it is pretreated with Na OH 6 g l<superscript>−1</superscript> and dyed with disperse dyes 5% o.w.f., NaCl 1 m, benzyl alcohol 60 ml l<superscript>−1</superscript> at 135 °C for 45 min to obtain a satisfactory colour yield with good washing fastness and dry rubbing fastness with 93.3% strength retention. The experimental results demonstrate that the Nernst adsorption isotherm is a favourable model for polyimide fabric dyeing with disperse dyes. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYIMIDES
DYES & dyeing
ALKALIES
THERMAL stability
SWELLING agents
BENZYL alcohol
Subjects
Details
- Language :
- English
- ISSN :
- 14723581
- Volume :
- 132
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Coloration Technology
- Publication Type :
- Academic Journal
- Accession number :
- 119356842
- Full Text :
- https://doi.org/10.1111/cote.12238