Identification Of Flax, Ramie And Hemp Fibers

In recent years, because of the excellent properties of the fiber, such as environmental protection, anti mildew and sterilization, all kinds of hemp fiber textile products or linen fiber textile products are increasing in the market, while ramie flax, hemp and hemp are applied to the bast fiber used in textile products.

The micro morphology and chemical properties of these three fibers are similar, which makes it difficult to detect these three kinds of hemp fibers.

Therefore, how to accurately determine flax,

Cannabis has become an important research topic in textile analysis.

In this paper, through the research and comparison of the vertical and horizontal section of flax, ramie and hemp fiber, and the research on the average fineness value of the hemp fibers in a large number of textile fabrics, some problems in the inspection of the three kinds of hemp fiber textile products are discussed.

Flax, also known as crow, flax, fiber, oil, fiber and oil, are three kinds of annual herbs.

In the phloem tissue of hemp stems, some gelatin is removed by retting and degumming, so that the adhesive fiber bundles are partially loosened, and then processed by pressing and rolling to form hemp fibers, which are made up of 10~20 single fibers.

Because of its good hygroscopicity, fast wetting and relatively fine diameter, it is one of the main raw materials for summer clothing.

Ramie is originally produced in China. It is known as "Chinese grass". It is a kind of perennial herb. It can be harvested three times a year. It can be used as head linen, two hemp and three hemp.

The quality of each harvested hemp is different, the head hemp is the finest, the three hemp is second, and the two hemp is the thickest.

Therefore, the diameter of ramie differs greatly under microscope.

Hemp is also called hemp and hemp.

It is very strange that it is rarely infected by insects in growth and placement.

Hemp single fiber is fineness and length in flax, so it also needs spinning with process fibers.

It has been known that hemp fibers and products are softer and prickle, which is related to the softness of fiber colloid and fiber itself.

Experiment part.

Fiber fineness instrument, Harris slicer, cover glass, glass slide, blade, liquid paraffin, collodion and so on.

In order to represent the samples, flax, ramie and hemp raw fabrics were selected randomly. The samples ranged from 1 to 5 for flax samples, 6 to 10 for ramie samples, and 11 to 15 for hemp samples.

The longitudinal surface of hemp fiber was made and microscope sections were observed. The morphology and diameter of the hemp fibers were observed by CU-2 fineness instrument.

Take flax, ramie,

And the linen fibers in the textile fabric, put the sample into the Harris slicer, and apply the cotton wool glue solution to evenly cut the fiber cross section of 20~30 micron m thickness, and observe and take the picture of the fiber cross section with the CU-2 fineness tester.

Take the linen fiber from linen, ramie, hemp raw fiber and textile fabric, put the sample into the Harris slicer and evenly cut 0.2 m to 0.36 m long fiber bundle, then pfer to the surface pan, add a certain amount of glycerol without water, and mix it into dense suspension.

Use a wide mouth suction tube to absorb a small amount of mixed uniform suspension into the glass slide, expand it evenly, cover the cover glass to fix the sample, make longitudinal section, no obvious pverse section, pverse knife notch, and vertical stripe is not obvious.

Observe cross section: polygon takes up most of the flax; the section is round and has a middle cavity, and the outer fringe is ramie. When the triangle in the fiber cross section and the irregular rectangle cross section occupy the majority, the outer corner is sharp, and it is hemp.