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Preparation method of bamboo cellulose

A technology of bamboo cellulose and bamboo, which is applied in the field of preparing bamboo cellulose by physical methods, can solve the problems of chemical pollution and high cost of bamboo cellulose, and achieve the effects of wide distribution, easy material acquisition, and reduced product cost

Active Publication Date: 2022-04-22
LANZHOU NONGZHIPIN ECOLOGICAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the technical problem to be solved in the present invention is to overcome the high cost of bamboo cellulose and the defects of chemical pollution that the existing method for preparing bamboo cellulose makes, thereby providing a method for preparing bamboo cellulose with physical methods

Method used

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  • Preparation method of bamboo cellulose

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preparation example Construction

[0051] The preparation method of the bamboo cellulose that the embodiment of the present invention 1-4 provides, the cellulose extraction equipment that adopts adopts, as figure 1 Shown, including: cutting mechanism, crushing mechanism and screening mechanism.

[0052] Specifically, the cutting mechanism has several blades 2 installed in rotation, and the blades 2 slice the end of the bamboo along the direction perpendicular to the growth direction of the bamboo. After the bamboo is cut into pieces, it is put into the hydrolysis device for hydrolysis. Such as image 3 As shown, the cutting mechanism includes a power element. In this embodiment, the power element is a high-speed separation motor 6, and a shaft coupling is installed on the output shaft of the high-speed separation motor. The other end of the coupling is connected with the tool holder, and the tool holder Installed on the frame body 3 through bearings, the knife rest has an annular outer ring, and several blade...

Embodiment 1

[0060] The bamboo in this embodiment is selected from green bamboos produced in Huaiji, Guangdong.

[0061] The present embodiment provides a kind of preparation method of bamboo cellulose, comprises the following steps:

[0062] S1, with length 1.8m, the bamboo that outer diameter is 50mm carries out rotary cutting along cross section (being the plane perpendicular to bamboo growth direction), is cut into the bamboo sheet 21 that thickness is 0.05mm, the length-to-diameter ratio of the bamboo fiber 1 of bamboo Greatly reduced.

[0063] S2. Import the cut bamboo flakes 21 into the extraction tank 4 filled with water, the water temperature is 70°C, the weight ratio of bamboo flakes to water is 1:4, the ultrasonic power is 1500W, the ultrasonic frequency is 40KHz, and the ultrasonic time is 45 minutes.

[0064] After the ultrasonic hydrolysis is completed, it is copied out with a gauze, after two times of clean water washing, it is placed in a centrifuge to filter the water, an...

Embodiment 2

[0068] The present embodiment provides a kind of preparation method of bamboo cellulose, and bamboo is selected from the green bamboo that Guangdong Huaiji area produces, comprises the following steps:

[0069] S1. The bamboo with a length of 1.8m and an outer diameter of 50mm is rotary cut along the cross section (ie, the surface perpendicular to the bamboo axis), and cut into thin bamboo slices 21 with a thickness of 0.05mm.

[0070] S2. Import the cut bamboo flakes 21 into the extraction tank 4 filled with water, the water temperature is 50°C, the weight ratio of bamboo flakes to water is 1:3, the ultrasonic power is 900W, the ultrasonic frequency is 30KHz, and the ultrasonic time is 50 minutes.

[0071] After the ultrasonic hydrolysis is completed, take it out with gauze, wash it twice with clean water, place it in a centrifuge to filter the water, and then dry it in an oven at 70°C for 8 hours to take it out. At this time, the water content is 3%.

[0072] S3. The solid o...

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Abstract

The invention provides a preparation method of bamboo cellulose, belongs to the field of cellulose preparation, and solves the defects of high cost and chemical pollution of bamboo cellulose prepared by the existing bamboo cellulose preparation method. The preparation method of the bamboo cellulose comprises the following steps: S1, preparing bamboo into bamboo slices, wherein the thickness of the bamboo slices is less than or equal to 0.1 mm; s2, the bamboo slices are subjected to ultrasonic treatment in water, solid-liquid separation is conducted, and solids are dried; s3, the solid is smashed and separated, and the bamboo cellulose is obtained.

Description

technical field [0001] The invention belongs to the field of cellulose preparation, and in particular relates to a method for preparing bamboo cellulose by a physical method. Background technique [0002] Cellulose is an important raw material for the production of cellulose ether series products such as carboxymethyl cellulose sodium (CMC), carboxyethyl methyl cellulose (HEMC), hydroxypropyl cellulose sodium (HPMC), etc. Cellulose is a natural Polymer compound, its chemical structure is a polysaccharide macromolecule with anhydrous β-glucose as the base ring, and there is one primary hydroxyl group and two secondary hydroxyl groups on each base ring. Through chemical modification, a series of cellulose derivatives can be obtained, and cellulose ether is one of them. Cellulose ether is a polymer compound with an ether structure made of cellulose, such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, etc. Genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L11/08B27J1/00B27K5/00
CPCB27L11/08B27J1/00B27K5/0065Y02E50/10
Inventor 马月鲤
Owner LANZHOU NONGZHIPIN ECOLOGICAL TECH CO LTD
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