Identification method of filter cloth fiber raw material——microscope observation method

There are many methods for identifying fibers, including combustion method, microscope observation method, density measurement method, dyeing method, reagent coloring method and dissolution method. With only one method, it is generally not possible to immediately determine the type of fiber, and a comprehensive analysis must be performed based on the test results of several methods. For the initial identification, you can first use the less time-consuming combustion method or microscope observation method. When this method cannot meet the requirements, other methods are used to supplement the identification.

Use Y172 fiber slicer to cut the fiber into tiny cross-section thin slices. With a general biological microscope, you can observe the shape of the longitudinal and transverse sections of various fibers. Category. But the shape of synthetic fibers can only be roughly resolved. The longitudinal and cross-sectional morphological characteristics of textile fibers are shown in the table below.

Natural fiber
Name Portrait Cross section
Cotton Flat ribbon, natural twist Kidney-shaped, with a cavity
Wool Scales Round
Natural silk Smooth Triangle
Flax Transverse section and vertical striation Polygon, small cavity
ramie Transverse section and vertical striation Kidney-shaped, with cracks

 

Chemical Fiber
Name Portrait Cross section
Polyester, nylon, polypropylene Smooth Round
Vinylon 1-2 grooves Kidney-shaped
Chloroprene 1-2 grooves Nearly round
Acrylic Smooth or 1-2 grooves Round or dumbbell-shaped
Cellulose acetate 1-2 grooves Irregular band
Viscose Longitudinal groove Tooth shape
Polynosic Smooth Less toothed and round

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