How to identify a variety of non-woven fabric?

How to identify a variety of non-woven material
1, handle visual method: this method is applicable to the fiber non-woven materials scattered state.
(1), cotton fiber than fiber technology of ramie fiber and other fibers, wool fibers were short and thin, often accompanied by a variety of impurities and defects. (2), the feel of the hemp fiber is relatively rough and hard. (3), wool fiber is rich in elasticity.
(4), silk is a filament, long and slender, with a special luster.
(5) in the chemical fiber, only the dry and wet state of the viscose fiber is strong.
(6), spandex has great flexibility, at room temperature, its length can be stretched to five times above. 2, the microscope observation method: according to the longitudinal surface of the fiber, cross section morphology characteristics to identify non-woven fabric. (1), cotton fiber: cross section shape: waist circle, there is middle waist; longitudinal surface shape: flat ribbon, a natural rotation.
(2), linen, ramie, flax, jute fiber: cross-section morphology: waist round or polygonal, cavity; longitudinal surface morphology: cross section, vertical lines.
(3), wool fiber: cross section shape: round or round, some of the hair marrow; longitudinal surface morphology: the surface of the scale. (4), rabbit fiber: cross section morphology: dumbbell shaped, hairy pulp; longitudinal surface morphology: the surface scales.
(5), mulberry silk fiber: cross section shape: irregular triangle; longitudinal shape: smooth flat, vertical stripes. (6), ordinary viscose: cross section morphology: serrated, skin core structure; longitudinal surface morphology: longitudinal grooves. (7), strong fiber: cross section shape: less teeth, or round, oval; longitudinal surface morphology: surface smoothness. (8), acetate fiber: cross-sectional shape: three lobed or irregularly serrated; longitudinal surface morphology: the surface longitudinal stripes. (9), acrylic fiber: cross-sectional shape: round, dumbbell shaped or leaflike; longitudinal surface: surface smooth or striped. (10), polyvinyl chloride fiber: cross-sectional shape: nearly round shape: smooth surface profile.
(11), spandex fibers: cross-section morphology: irregular shape, a circular, potato shaped; shape of longitudinal surface: surface dark was not clear bone shaped stripes.
(12), polyester, nylon, polypropylene fiber: cross-sectional shape: round or irregular; longitudinal surface forms: smooth. (13), vinylon fiber: cross-sectional shape: round the waist, the skin core structure; longitudinal surface morphology: 1~2 root groove. 3, density gradient method: according to the characteristics of various fibers with different density to identify non-woven fabric. (1), with a constant density gradient solution, the general choice of xylene carbon tetrachloride system. (2), the calibration density gradient tube, commonly used is precision ball method.
(3), were measured and calculated, and a fiber to be measured for removal of oil, drying, deaeration pre processing, made the ball into balance, according to the position of fiber suspension measured fiber density.
4, a fluorescent method: using ultraviolet fluorescent lamp irradiation non-woven fiber. According to the different nature of all kinds of non-woven fiber luminous, non-woven fiber fluorescent colors different characteristics to non-woven fiber identification. All kinds of non-woven fiber fluorescent color concrete shows: (1), cotton, wool fiber: pale yellow (2), mercerized cotton fiber: light red (3) and jute (students) fiber: purple brown (4), jute, silk, nylon fiber: light blue (5), viscose fiber: white Color Purple shadow (6), light viscose fiber: pale yellow purple shadow (7), polyester fiber: blue sky white light is very bright (8), vinylon lustrous fibre: light yellow purple shadow.