Remove the two types of latitude yarn that do not know the type of fabric, ignite the lighters, and carefully observe some physical phenomena of its combustion process to determine the raw materials of the latitude yarn. When burning, observe the flames, melting conditions and the smell and the situation of the ashes after burning. Below are the combustion physical performance parameters of two types of fabric materials for consumers' reference.

1. Cotton fiber and hemp fiber. The cotton fiber and hemp fiber are just near the flame, and the burning is fast, the flame is yellow, and the blue smoke. The difference between the smell and ash after burning and the ashes after burning is that the smell of paper burning with a paper, the smell of the ash burning; after the burning, the cotton has very few powder ashes, which is dark or gray, and a small amount of gray and white powder is produced. Ashes.

2. Nylon and polyester. Nylon (nylon) scientific name polyamide fiber. Near flames quickly roll and melted into white glue, dripping and foaming in the flame, no flames when burning, it is difficult to leave the flames and continues to burn. The ashes are light brown, and the melting material is not easy to study. Polyester scientific polyester fiber, which is flawed, near flames are fused. When burning, black smoke is melted while burning.

3. acrylic and pallon. The acrylic is named polypropylene fiber, softened and softened by the fire, and the black smoke was risen after the fire. The flame was white. After the flames, it burned quickly, exuding the bitter smell of burning meat. Essence Pleel proprcells are polyocyrine fiber. Near flames are fusion, flammable, slowly burning from the fire and dripping black smoke. The upper end of the flames is yellow and the lower end is blue. Twisted easily.

4. Veon and chlorine. Vitun's name polyethylene alcohol -shrinking formaldehyde fiber, not flammable, near -flame melting contraction, a little flame at the top when burning, the fiber is blends into glue flames to become larger, with thick black smoke, exuding bitter aroma, and black after burning. Small bead -shaped particles can be crushed with fingers. The chlorine is called polyvinyl chloride fiber, which is difficult to burn. It is out of fire. The flame is yellow. The lower end is green and white smoke.

5. Spandex and fluoron. The spandex acymamate fiber fiber, which is burned by melting edges near the fire. The flames are blue when burning. Leave the fire and continue to be burned, exuding a special stimulating odor. After the burning, the ashes are soft and fluffy black and gray. Fluoren is a polyettetosinylinyl fiber. The ISO organization is called fluorite fiber. Near the flames are melted, it is difficult to cause ignition, not burning, the edge flames are blue -green carbonized, melted and decomposed, the gas is poisonous, the melter is hard round black and black black black and black black black. Pearl. Fluoron fiber is often used in the textile industry to create high -performance sewing threads.

The combustion method is used to identify the fiber simple and easy, but the blending products are not easy to judge. One yarn is required from the direction of the latitude and weft (that is, the direction of straight and horizontal).