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Method for improving viscose bamboo pulp reaction performance

A technology of reactivity and bamboo pulp is applied in the field of improving the reactivity of bamboo pulp, which can solve the problems of increasing the pore structure of pulp and the like, and achieve the effects of improving reactivity, good selectivity and increasing adsorption capacity.

Inactive Publication Date: 2016-07-27
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the object of the present invention is to provide a method for improving the reactive performance of the pulp, which can not only further remove hemicellulose, but also keep the fiber The degree of polymerization of the cellulose fiber can be increased, and at the same time, the pore structure of the dried pulp can be increased, and the amount of chemicals such as carbon disulfide and lye used in the subsequent viscose preparation process can be effectively reduced, and viscose fiber products with a high degree of polymerization can be obtained.

Method used

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  • Method for improving viscose bamboo pulp reaction performance
  • Method for improving viscose bamboo pulp reaction performance
  • Method for improving viscose bamboo pulp reaction performance

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Pulp board pretreatment: shred 360g Cizhu dry pulp board into pulp pieces, soak them in 5L deionized water for 4 hours, transfer them all to the Wally beater without lever arm load, and continue to add deionized water When the total volume is 23L, dissociate the fibers for 30 minutes;

[0023] (2) Pretreatment before auxiliary agent treatment: Wally beater plus (54±1)N lever arm load, for the slurry obtained after the treatment in step (1), under the line speed of the knife roller at 32m / s, Carry out the beating operation for 4 minutes. After the beating operation is completed, put the slurry into a 400-mesh mesh bag to remove moisture until the slurry concentration is 10%, so as to obtain a slurry suspension.

[0024] (3) Auxiliary treatment: transfer the slurry suspension obtained after the treatment in step (2) into a polyvinyl chloride sealed bag, and place the sealed bag in a constant temperature water bath, and adjust the temperature to 40°C. Add the auxiliar...

Embodiment 2

[0030] The operation method of embodiment two is:

[0031] On the basis of the process of Example 1, step (2) is not added and no auxiliary agent is added in step (3), all the other are consistent with the completion steps of Example 1, the α-cellulose obtained is 95.8%, and the polypentose is 4.1%, ash content 0.17%, intrinsic viscosity 640.3mL / g, reactivity (Fock) 60.6%.

Embodiment 3

[0033] (1) Pulp board pretreatment: shred 360g hemp bamboo dry pulp board into pulp pieces, soak them in 5L deionized water for 4 hours, transfer them all to the Wally beater without lever arm load, and continue to add deionized water When the total volume is 23L, carry out fiber dissociation treatment, and the dissolving time is 35min;

[0034] (2) Pretreatment before auxiliary agent treatment: Wally beater plus (54±1)N lever arm load, for the slurry obtained after the treatment in step (1), under the linear speed of the knife roller at 33m / s, Carry out the beating operation for 5 minutes. After the beating operation is completed, put the slurry into a 400-mesh mesh bag to remove moisture until the slurry concentration is 8%, to obtain a slurry suspension.

[0035] (3) Auxiliary treatment: transfer the slurry suspension obtained after the treatment in step (2) into a polyvinyl chloride sealed bag, place the sealed bag in a constant temperature water bath, adjust the temperatu...

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Abstract

The invention relates to a method for improving a bamboo pulp reaction performance. The method comprises the following steps of (1) pre-processing a pulp board; (2) pre-processing before processing an accessory ingredient; (3) processing the accessory ingredient, wherein the accessory ingredient is one or a mixture of polyglycol ether, polyoxyethylated castor oil, Turkey red oil, polyethylene glycol diamine, polyoxyethylene and sodium tripolyphosphate. The accessory ingredient processing provided by the invention has the advantages that the reaction performance adverse impact brought by cornification effect caused by further removing hemicellulose drying at the same time is avoided, the selectivity is good, and the degradation of cellulose is avoided; under the condition of keeping the pulp viscosity, the reaction performance can be improved by 5 to 20 percent.

Description

technical field [0001] The invention relates to the technical field of bamboo pulp and viscose fiber, in particular to a method for improving the reactivity of bamboo pulp. Background technique [0002] The main component of pulp is cellulose, with a content of more than 90%. Cotton linters and wood have been the main sources of raw materials for making pulp. In recent years, with the general increase of the population, in order to meet the abundant food supply, the cultivated land for grain has only increased, and the area of ​​cotton fields has been continuously occupied, which has greatly restricted the artificial planting of cotton linters, and the output of cotton linters has sharply increased. decline. As for the development and utilization of wood raw materials, due to the low coverage and uneven distribution of forest resources, coupled with the deforestation of wood and the long growth cycle, its supply cannot meet the needs of production development at all. Seek...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21D1/02
CPCD21C5/00D21D1/02
Inventor 陈秋艳黄六莲陈礼辉苗庆显
Owner FUJIAN AGRI & FORESTRY UNIV
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