effect of epoxy-amine stoichiometry on cured resin material properties

sizings and/or surface treatments are commonly employed to enhance the interaction of fiber reinforcements in polymer matrix composites. these modifications can induce physical and chemical interactions that cause local stoichiometric imbalances to occur that can affect the properties of the polymer matrix in the vicinity of the fiber sur..

influence of dyeing techniques on the performance of reactive dyed cotton fabrics

comparative study of the influence of dyeing technique for reactive dyes on cotton, viz. exhaust (exh. ) vs. pad batch (pb) for dichlorotriazinyl dyes and pad-dry-cure (pdc) vs. pad-dry-steam (pds) for monochlorotriazinyl dyes, has been carried out in the laboratory for five depths of shade ranging from 0. 25 to 4 on two cotton fabrics. e..

aerodynamic system for dyeing piece goods

a new generation of jet dyeing machines has been developed in which the fabric is transported by a stream of gas rather than by the stream of liquor generally encountered in conventional systems. the present article reports on the promising results obtained in tests to date, and on the theoretical background to the new system. (author abs..

dyebath and auxiliary bath reuse for energy and mass conservation

dyebath/auxiliary bath reuse are demonstrated on a pilot-scale to be a feasible, economical alternative to conventional batch dyeing processes. atmospheric disperse dyeing of nylon and polyester carpet and nylon pantyhose, and pressure disperse dyeing of polyester yarn packages have all been demonstrated as suitable candidates for plant i..

effect of surfactants and heat on the dyeing and physical properties of cotton, nylon, and polyester

in textile wet processing, fabrics are often treated with surfactants followed by rinsing and drying. residual surfactant fixed by heat on the fabric might be expected to alter the physical properties and dyeing properties of the fabric. to examine this hypothesis, the authors have treated cotton, nylon, and polyester fabrics with either ..

microprocessor-based steamer control using infrared radiation

for the fixation of dyestuffs on printed and dried fabrics, uniform saturation of the steam with sufficient moisture is a prerequisite for a high and reproducible dye yield. current techniques being used to control steamer conditions include: steam saturation without any measurement, water injection based on measured temperature, and satu..

dye migration in printed polycot blend fabrics

in this study, the influence of various thickeners and their combinations in printing pastes used for polyester/cotton (polycot) blends is examined. the dye migration during the drying stage, the water movement, and the technical migration of the dye particles through print-dry-thermofixation techiques are thoroughly evaluated it is shown..

processing mechanically cleaned and shortened scoured wool on the cotton system

intensive investigations with a large-scale laboratory model of the srrc carding cleaner (cc) and two grades of wool showed that the cc sufficiently shortened and cleaned the wool so it could be processed into yarn on the cotton system. a cc with a coarse wire and a low tooth density caused less fiber breakage and produced a better grade ..

use of solar energy in combined desizing and scouring of cotton

the feasibility of using solar energy to carry out simultaneous desizing and scouring of cotton has been assessed. the process is feasible and the properties of treated goods are acceptable. (author abstract) 4 refs

physico-chemical study on applying ultrasonics in textile dyeing

investigations were launched to determine both the individual and combined effects of ultrasonic cavitation and heat on dyeing cotton fabric with a direct dye. heat generated in the system upon application of ultrasonic waves of 40 khz frequency was determined using model equations and confirmed experimentally. the study has shown that th..