Method for manufacturing bamboo fibers

Abstract

The invention provides a method for manufacturing bamboo fibers. The method comprises the following steps of: 1) rolling: rolling to crack a bamboo chip to ensure that the bamboo fibers are possibly dispersed; 2) dipping: putting the bamboo chip into a reaction kettle, and mixing with a proper amount of reactant for 10 to 90 minutes to remove lignin, polysaccharide, colloid and protein on the surface of the bamboo fiber; 3) defibering: reducing the pressure instantaneously to standard atmospheric pressure to ensure that the bamboo chip is exploded in the reaction kettle and defibered to form a single-fiber bamboo chip; 4) cleaning: washing the bamboo fibers with hot water with the temperature of between 50 and 100 DEG C at least twice to remove byproducts from the surfaces of the bamboo fibers; 5) dewatering: drying the cleaned bamboo fibers to obtain a dry bamboo fiber finished product; and 6) cutting: cutting the bamboo fibers into bamboo fibers with a proper length. By adopting a physical instantaneous depressurized explosion mode and a chemical reaction reagent dipping mode, the bamboo chip is treated by steps, and the instantaneous depressurized explosion also accelerates thereacting speed of the chemical reagent and the bamboo chip to achieve the effect of quickly removing the lignin, the polysaccharide, the colloid and other substances from the surface of the bamboo chip.

Description

technical field [0001] The invention relates to a method for deep processing of bamboo, in particular to a method for manufacturing bamboo fiber by adopting physical and chemical methods. Background technique [0002] Since ancient times, bamboo has been used as an important material for tools, furniture, construction materials, agricultural materials, handicrafts, etc., and people have been deeply aware of it. Bamboo has a short growth cycle, its fibers have good ecology, can be 100% biodegradable, can produce moisture absorption, antibacterial and other effects, and have been widely used in textiles. In addition, bamboo fiber has high strength and can replace glass fiber, carbon fiber, etc. as a reinforcing material for plastics. [0003] In addition to bamboo cellulose, bamboo also contains a large amount of lignin, polysaccharides, gums, proteins and other substances. When used in bamboo-plastic composite materials, such substances should be partially or completely rem...

AI Technical Summary

Problems solved by technology

An accelerated physical method is to remove polysaccharides, proteins and other substances by cooking. The speed of removing chemical substances in this method is still slow and not suitable for large-scale rapid manufacturing

Another, faster physical method to produce fibers is to place bamboo in high-temperature and high-pressure steam, and then instantaneously reduce the pressure to make bamboo burst into fibers. The fibers produced by this method still contain a higher concentration of non-fiber Substances that affect its performance

Chemical methods can be used to quickly produce bamboo fiber, but generally a large amount of chemical reagents are used to soak and soften, and to separate delignification, polysaccharides, colloids, etc., to obtain bamboo fibers. Chemical reagents accelerate the reaction and shorten the fiber manufacturing process, but this method It is easy to cause a large amount of chemical pollution, and the cost of waste liquid treatment is high

Existing physical methods have limited removal of non-fibrous substances such as lignin, polysaccharides, gums and proteins

The chemical method takes a long time to process, produces a lot of pollution, and the by-products are not easy to recycle.

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