Method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves

Abstract

The invention discloses a method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves. The method comprises the following steps of: removing moisture in the sisal hemp leaves; placing the dehydrated sisal hemp leaves in a reaction vessel, adding sodium hydroxide solution and sealing the reaction vessel; conducting microwave heating on the reaction container containing the sisal hemp leaves and the sodium hydroxide solution; and taking out and washing the sisal hemp leaves from the reaction container by clear water, and removing slag to obtain sisal hemp fiber. The temperature, needed by degumming, of the solution can be achieved within short time by adopting auxiliary microwave heating; and the sealed reaction vessel can generate high pressure in heating, thus being capable of enabling the solid gum on the sisal hemp leaves to be quickly detached from a solid fiber interface. Due to adoption of higher temperature and pressure, the sisal hemp leaves can be degummed within shorter time so as to obtain fiber in leaves. With the adoption of the method, the content of fiber in the sisal hemp leaves can be accurately determined, the determination speed is high, and the method plays an important role in the aspects of purchase, culture management, sisal hemp fiber machining and the like of the sisal hemp leaves.

Description

technical field [0001] The invention relates to a method for processing sisal leaves to measure the fiber content of the sisal leaves, in particular to a microwave-assisted heating and high-pressure degumming method for sisal leaves. Background technique [0002] Sisal, also known as sisal hemp, is a perennial hemp crop native to Central America. Sisal fiber is the vascular bundle fiber taken from sisal leaves. It is a natural hard fiber and is the key to the survival and development of the sisal industry. [0003] Determining the fiber content of sisal leaves plays an important role in the management and cultivation of sisal leaves. According to the fiber content of sisal leaves, not only can the purchase method of sisal leaves be formulated to maintain fair trade in the market; Reasonable cultivation techniques can produce high-quality and high-fiber leaves. [0004] At present, the method of obtaining fibers from sisal leaves is mainly mechanical processing with a hemp...

AI Technical Summary

Problems solved by technology

However, because the high-temperature and high-pressure cooking degumming method adopts ordinary electric heating method, the reaction speed is slow, the temperature rise is slow, and the temperature and pressure drop are also slow, so that the whole process of degumming takes a long time.