Coolmax fabric is actually the concept of ice silk fabric.
Ice silk is another name for viscose fiber, viscose fiber refers to α-cellulose extracted from cellulose raw materials such as wood and plant ligustrum, or cotton linters as raw materials, processed into spinning dope , And then wet spinning made man-made fibers.
The basic composition of viscose fiber is cellulose (C6H10O5)n o Ordinary viscose fiber has a zigzag-shaped skin-core structure in cross section, with straight longitudinal grooves. The fiber-rich structure without skin core has a circular cross-section.
Viscose fiber has good moisture absorption. Under normal atmospheric conditions, the moisture regain rate is about 13%. After absorbing moisture, it expands significantly, and the diameter increases up to 50%, so the fabric feels hard after being put into water, and the shrinkage rate is large.
The breaking strength of ordinary viscose fiber is smaller than that of cotton, about 1.6~2.7cN/dtex; the elongation at break is greater than that of cotton, which is 16%~22%; the wet strength decreases more, about 50% of the dry strength, and the wet elongation The length increases by about 50%. Its modulus is lower than that of cotton, it is easy to deform under a small load, and its elastic recovery performance is poor, so the fabric is easy to stretch and its dimensional stability is poor. The strength of the rich fiber, especially the wet strength, is higher than that of ordinary viscose, the elongation at break is smaller, and the dimensional stability is good. Ordinary viscose has poor abrasion resistance, while rich fiber has improved.
The chemical composition of viscose fiber is similar to cotton, so it is more resistant to alkali but not acid, but it is inferior to cotton. Rich fiber has good alkali and acid resistance. Similarly, the dyeability of viscose fiber is similar to cotton, the dyeing chromatogram is complete, and the dyeing performance is good. In addition, the thermal properties of viscose fiber are similar to cotton, and the density is close to that of cotton, which is 1.50~1.52g/cm3.
The hydroxyl groups of cellulose macromolecules are prone to various chemical reactions. Therefore, the viscose fiber can be modified by grafting and other methods to improve the performance of the viscose fiber and produce various special purpose fibers.
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