Method for extracting opening fiber fine hemp from banana stalk

Abstract

The invention discloses a method for extracting fine hemps of opened fibers from stems of bananas, which comprises the steps of: (1) preparing rice water with a Baume degree of 2 degrees to 3 degrees; (2) soaking rough hemps in the rice water and taking out of the water for draining; (3) placing the rough hemps into a mixed solution of 3 percent to 4 percent of sodium hydroxide, 1.3 percent to 1.5 percent of sodium sulfite and 13 percent to 15 percent of sodium carbonate after draining, processing the rough hemps in the condition of high pressure and high temperature, cleaning with water after being cooled and beating; (4) carrying out acid cleaning with glacial acetic acid with a Baume degree of 25 degrees to 30 degrees; (5) soaking with a sodium hypochlorite solution with a pH value of 7 to 8 and a concentration of 1g / L to 2g / L and putting the rough hemps into a mixed solution of 0.4 percent to 0.5 percent of sodium hydroxide, 0.8 percent to 1 percent of emulsifying agent and 8 percent to 10 percent of tea-seed oil for soaking after being cleaned; and (6) drying or sun curing, thus producing cotton opened fine hemps of the fibers. The method not only makes waste profitable, makes full use of resources, provides new material source of the hemp spinning industry of China, requires simple equipment and easily controlled common personnel, but also can extract fiber manila hemps with light mass and good water absorption performance.

Description

technical field [0001] The invention relates to a method for mechanically separating fibers from plant raw materials, in particular to a method for extracting loose fibers and flax from banana stems. Background technique [0002] There are many tropical plants in tropical and subtropical regions. South my country is a subtropical region, which is suitable for planting bananas. Bananas are one of the four famous fruits in my country. The development and utilization of tropical natural plant fibers, such as: sisal hemp, coconut fiber, pineapple leaf fiber, banana stem fiber, has attracted the attention of the textile industry. It is very important to make these fibers into home textiles such as carpets, sofa releases, and wall coverings. market potential. Pineapple leaves and banana stems are rich in fiber resources, and the fiber quality is softer and slender than sisal hemp, with good spinnability, and can also be used to make high-end clothing fabrics. In addition to the ...

AI Technical Summary

Problems solved by technology

Banana stems are rich in cellulose. Because of its special fiber molecules are different from other hemp, banana fiber hemp is rich in pectin, wood, hemicellulose and other substances, so that the fresh banana hemp in the process of cooling, It is susceptible to oxidation and quickly turns black, and the fibers are prone to breakage. Therefore, because the banana stems are not well developed and utilized, they often become a kind of waste and are discarded in the corners of the field, allowing them to rot in the field. polluted environment

At present, there is no technical report on using banana stems to obtain fiber hemp, and there is no better method for extracting fiber hemp from banana stems that meets the production needs. The general method is to soak the banana stems in water and wait for the stems to rot. After being fished out, the fiber hemp is extracted by manual hammering. The disadvantages are: the extracted fiber hemp is rough and has poor practicability; the labor intensity is high, the productivity is low, and the development cost is high, which restricts the development of large-area resources. Development and utilization, resulting in the extraction of fiber hemp from banana stems cannot realize industrial production