Physical preparation method for bamboo fibers

Abstract

The invention provides a pure physical and pollution-free extraction technology for bamboo fibers. By means of the technology, coarse bamboo fibers with the diameter ranging from 0.03 mm to 0.3 mm, the length larger than 20 cm, the elongation at break ranging from 3% to 7%, the break force ranging from 3 N to 15 N and the break strength ranging from 100 MPa to 600 MPa can be obtained. The technological process includes the steps of pretreatment, high-temperature and high-pressure cooking, mechanical softening fibrillation, screening and separation, drying, and packaging and warehousing, wherein pretreated bamboo chips are put into a cooking container to be cooked and softened for 14-15 h, and then mechanical grinding fibrillation is performed through a softening machine. The product prepared through the technology meets the requirement for bamboo-plastic composites, production cost is low, the technological process is short, cleanliness and environment friendliness are achieved, and preparation is simple and easy.

Description

technical field [0001] The invention relates to textile material technology, in particular to a purely physical preparation method of bamboo fiber. Background technique [0002] China is one of the countries with the richest bamboo resources, ranking first in the world in terms of bamboo species, area, stock volume and annual harvesting volume. According to statistics, there are more than 40 genera and 500 species of bamboo plants in China, with an area of ​​7.2 million hectares of bamboo forests. 2 , of which 4.2 million hm of pure bamboo forest 2 . For thousands of years, the use of bamboo has been realized by processing it into bamboo products. Today, when non-renewable resources such as petroleum are increasingly depleted, it is of great significance to use bamboo as raw material for the development of fiber materials. [0003] The length of bamboo single fiber is relatively small, generally about 2 mm, and it is composed of many single fibers bonded longitudinally. D...

AI Technical Summary

Problems solved by technology

[0004] Aiming at problems such as complex operation, high cost, and environmental pollution in the existing bamboo fiber production process, the technical problem to be solved by the present invention is to provide a purely physical preparation method of bamboo fiber, which does not use any chemical agents and has Simple operation, cost saving, clean and environmentally friendly, energy saving and high efficiency, etc.