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Method for improving mechanical wood pulp fibre performance

A wood pulp fiber and mechanical technology, applied in chemical and mechanical pulp mixture, post-treatment modification of cellulose pulp, addition of non-fibrous pulp, etc. Printing quality and other issues, to achieve the effect of improving fiber properties, fiber properties, whiteness and strength properties

Inactive Publication Date: 2006-06-14
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fibers of mechanical wood pulp are short, the content of fine components in the pulp is high, and the drainage performance of the pulp is poor, which is not conducive to the increase of the speed of the paper machine. Moreover, the strength and surface strength of the paper are low, which directly affects the quality of the paper. printing quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method for improving the fiber properties of masson pine groundwood pulp includes enzyme treatment and bleaching. The specific operations are as follows:

[0015] (1) Enzyme treatment, add laccase 20LAMU / g in the container that groundwood pulp of masson pine is housed, mediator violuric acid 1%, pass oxygen, control and handle pulp concentration and be 10%, temperature 50 ℃, process The time is 30 minutes.

[0016] (2) bleaching, carry out hydrogen peroxide bleaching to above-mentioned enzyme treatment pulp, technological condition is: thick 15%, 3%Na 2 SiO 3 , 0.08% MgSO 4 , 0.2% diethylenetriaminepentaacetic acid (DTPA), 2% NaOH, 2% H 2 o 2 , temperature 60°C, time 3h.

[0017] All the above are percentages by weight.

[0018] Compared with the control pulp, the whiteness of the wood pulp obtained in this embodiment is increased by 2.0% ISO, the breaking length is increased by 58%, and the fiber properties are obviously improved.

Embodiment 2

[0020] As described in Example 1, the different mediator was 1.0% 1-hydroxybenzotriazole (HBT) by weight.

Embodiment 3

[0022] As described in Example 1, the weight percentage of different mediators is 1.0%, and the mediator is a combination of 1-hydroxybenzotriazole (HBT) and violuric acid (Violuric acid) in a weight ratio of 1:1.

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PUM

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Abstract

The invention relates to a method of improving mechanical pulp fibre capability. It belongs to pulping paper technology field. It includes enzyme treatment and bleaching. The enzyme treatment is adding 0.5-50LAMU / g laccase and 0.1%-4%mediator to mechanical pulp container; inputting oxygen; controlling treating pulp density between 1% and 20%, temperature 20-70 degree centigrade, treatment time 20-120min. The invention is used to teat not bleached Massoní»s pine grindstone ground pulp to obviously improve its fiber capability, paper pulp whiteness and fatigue resistance. Compared with the comparison pulp, the whiteness can be improved 2.0%; fracture length 58%. And the fiber capability is obviously improved.

Description

(1) Technical field [0001] The invention relates to a technology for improving the performance of mechanical wood pulp enzymatic fibers, in particular to a method for improving the performance of mechanical wood pulp fibers, and belongs to the technical field of pulping and papermaking. (2) Background technology [0002] With the increasing demand for paper and cardboard, forest resources are being continuously consumed, and the paper industry is paying more and more attention to the development and utilization of fiber resources for papermaking, the development of high-yield pulping and the recycling of waste paper. Yuan Ping, Fu Shiyu, Yu Huisheng, Cellulase Modified Cellulose Science and Technology of Masson Pine Groundwood Pulp, 2001, 9(3): 48-52. The cost of mechanical wood pulp is low, the yield is high, the initial whiteness of the pulp is high, the formation, smoothness and bulk of the paper are better, and the paper has better opacity and ink absorption performance....

Claims

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Application Information

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IPC IPC(8): D21H11/20D21C9/16D21H11/10D21H17/07D21H17/09D21H17/22D21H21/06D21H23/10D21H23/14
Inventor 秦梦华徐清华傅英娟汤振江
Owner QILU UNIV OF TECH
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