Xiao Bian has always believed that the basic knowledge is very important ~ no matter which industry basic knowledge must be kept firmly ~ ~ today to identify the method of fiber identification ~ ~ everyone must quickly collect Oh ~ ~
1) Identification method :
Hand, visual inspection, combustion, microscopy, dissolution, drug coloring, and infrared spectroscopy.
2) Identification steps:
1 First identify the natural fibers and chemical fibers by the combustion method.
2 If it is a natural fiber, identify various types of plant fibers and animal fibers by microscopic observation. In the case of chemical fibers, the differences in melting point, specific gravity, solubility, etc. of the fibers are distinguished.
3 In the identification of mixed fibers and blended yarns, microscopic observations are generally used to confirm that they contain several types of fibers, which are then identified one by one by appropriate methods.
â‘£ For the fiber after dyeing or finishing, in general have to carry out dyeing or other appropriate preprocessing peeling, it is possible to ensure the reliability of the discrimination result.
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