What are the methods for identifying textile fabric components

  • Date:2019-10-24
  • Summary:1. Microscopic observation

    By observing the longitudinal morphology of the textile fibers under the microscope, it is possible to distinguish the major classes

    1. Microscopic observation

    By observing the longitudinal morphology of the textile fibers under the microscope, it is possible to distinguish the major classes to which they belong; by observing the cross-sectional morphology of the textile fibers, the specific name of the fibers can be determined.

    Dissolution method For purely woven fabrics, a certain concentration of chemical reagents should be added to the test tube containing the textile fibers to be identified, and then the dissolution of the textile fibers (dissolved, partially dissolved, slightly soluble, insoluble) should be observed and carefully distinguished. And carefully record the temperature at which it dissolves (dissolved at room temperature, dissolved in heat, boiled and dissolved);

    For blended fabrics, when it is identified, the fabric needs to be split into individual textile fibers, and then the textile fibers are placed on a concave glass slide, the fibers are unfolded, chemical reagents are dropped, and observed under a microscope. Observe the dissolution of the component fibers and determine the type of fiber;

    Since the concentration and temperature of the chemical solvent have a significant influence on the solubility of the textile fiber, the concentration and temperature of the chemical reagent should be strictly controlled when the textile fiber is identified by the dissolution method.

    What are the methods for identifying textile fabric components?

    2.Reagent coloring method

    The reagent coloring method is a method for rapidly identifying textile fiber varieties based on the difference in coloring properties of various textile fibers to a certain chemical agent. Reagent coloring is only available for undyed or purely spun yarns and fabrics. Decolorization of colored textile fibers or textile fabrics must be advanced.

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