Papers by Keyword: Viscose

Abstract: In this work, commercial Viscose fibers (cellulosic based precursor) were used for making carbon fibers. The experimental procedures include two main steps: Stabilization in air atmosphere and Carbonization in inert gas atmosphere. In the first step, the Viscose fibers are stabilized with the catalyst of mixture urea/diamonium hydrogen phosphate in air at temperature of 250 °C. The stabilized fibers are then carbonized in argon at heating rates of 3 °C.min^-1 (below 600 °C) and 5 °C.min^-1 (above 600 °C). Ultimate carbonization temperature is 1200 °C. Commercial Viscose fibers possessed carbon content about 40 wt% and fiber dimension is approximately 18 μm. After carbonization, obtained fibers have carbon content above 94 wt% and diameter of about 8μm. The Thermogravimetry Analysis (TGA), Carbon analysis, SEM imaging and XRD analysis are used for this study.

Abstract: This paper has a preliminary discussion of viscose wastewater treatment, proposes the primary materialization treatment of viscose wastewater through experimentation and makes a contract analysis of the two technological processes of the sludge dehydration, thus summarizes the combination treatment of the primary materialization and plate and frame filter press for the viscose wastewater and sludge.

Abstract: This paper covers treatments at home and abroad.of H₂S gas from viscose industry. It also elaborates on the principle, process, frequently asked questions and treatment effect of the treatment of H₂S gas with turbulent ball tower alkaline washing method.

Abstract: In this work, the dyeing properties of three warm-dyeing reactive dyes (C.I. Reactive Orange 16, Red 198 and Blue 222) for functional viscose/chitin blend fiber containing partially deacetylated chitin were investigated. Under all the dyeing conditions, reactive dyes exhibited higher exhaustion and fixation on viscose/chitin fiber than on conventional viscose fiber. The difference of dye exhaustion and fixation between viscose/chitin and viscose fibers became greater in the following cases: low to moderate dye concentration, low dyeing temperature, no alkali, the use of the dyes with low molecular weight, etc. The dependence of the exhaustion and fixation of reactive dyes on temperature on viscose/chitin fiber was less than that on viscose fiber. The reactive dyeing of viscose/chitin fiber required only a low dosage of sodium carbonate.

Abstract: This paper focuses on an applied research of automatic detection method for the viscose maturity degree in the chemical fiber production and introduces the hardware structure and software process of this automatic detection device for the maturity degree of viscose. Besides, through rigorous testing, contrasting, and analysis between this device and traditional test methods , the paper also puts forward a better way to improve the precision and result consistency in the process of the viscose maturity degree detection.

Abstract: In this paper Proban CC-treated high-wet-modulus (HWM), viscose and Lyocell celluloses were prepared and their properties, such as IR analysis, flammability and mechanical properties were studied. IR showed that in three Proban CC-treated celluloses the new absorption peak around 1560 cm-1 appeared. After combustion, Proban CC-treated HWM celluloses almost completely remained the fiber profile, then the Proban CC-treated Lyocell celluloses, finally the Proban CC-treated viscose celluloses. Though three Proban CC-treated celluloses showed the good thermal stability, their mechanical properties were declined. The strength of the Proban CC-treated HWM celluloses declined most, then the Proban CC-treated Lyocell celluloses, finally the Proban CC-treated viscose celluloses. These indicated that Proban CC treatment influenced the mechanical properties of the celluloses badly.

Abstract: Traditional regenerated cellulose fiber (viscose or viscose fiber) had a poor wet breaking strength and wet modulus, which to some extent limited the application of the fiber. Hollow viscose was difficult to get for its instability during the cellulose regenerating process. This paper introduced one kind of new spinning method for hollow viscose through a spinneret of concentric shaft structure using HWM technology. The hollow viscose fiber produced in this experiment had a big crystalline structure and an excellent fibril orientation which gifted the fiber a good mechanical performance even under wet circumstances. The fiber had a bright future in textile application as one component of blending fabrics.

Abstract: In this article we successfully prepared calamine / sodium alginate viscose fiber. Good dispersion and stability of the modified solution was prepared by dispersing calamine in alkaline solution of sodium alginate, and then mixed it with viscose spinning solution by spinning injection methods. Moreover, the stability of calamine / sodium alginate solution, the effect of concentration of calamine on the fiber properties is studied in this paper. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and physical mechanical performance are test to characterize the structure and the performance of the calamine / sodium alginate viscose fiber.

Abstract: Tensile strength of the viscose fibers is significantly influenced by the environment moisture. In this paper, single-fiber strength tester and single-yarn tester were adopted to test the strength of the viscose fiber and filament with different moisture contents. The results showed that the strength property of viscose filament was decreased after moisture absorption. When the moisture content of the yarn increases, the strength of the filament improved gradually and increments tend to be stable.