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Method for realizing micro fiberization of chemical mechanical pulp and for enhancing physical strength of paper

A chemical mechanical and microfibrillation technology, which is applied in pulp beating/refining methods, pulping with inorganic alkali, fiber raw material treatment, etc., can solve problems that have not been discovered, expand the application field and scope, and reduce environmental protection The effect of high pressure and high pulping yield

Inactive Publication Date: 2018-02-02
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, no method has been found to prepare cellulose microfibrils from chemical mechanical pulp and use them to enhance the physical strength of paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for achieving microfibrillation of chemical mechanical pulp and for enhancing the physical strength of paper, the steps are as follows:

[0038] (1) Slurry preparation: the poplar P-RCAPMP pulp commercial pulp board is placed in water and soaked for 4 hours (wherein, the pulp board that needs to be soaked refers to those whose dryness is equal to or greater than 20% mass fraction), and the mass concentration is controlled at 4% during soaking. %, and then utilize a disintegrating machine to carry out dissociation treatment to disperse the fibers, and the mass concentration of the dissociated slurry suspension is controlled at 3%;

[0039](2) Concentration of poplar P-RCAPMP slurry: the dissociated slurry suspension is dehydrated by suction filtration to achieve the purpose of concentration, and the concentrated slurry is obtained. The mass concentration is controlled at 20%, and placed at a low temperature (4°C) Save it for later use;

[0040] (3) Alkali treat...

Embodiment 2

[0053] A method for achieving microfibrillation of chemical mechanical pulp and for enhancing the physical strength of paper, the steps are as follows:

[0054] (1) Slurry preparation: Poplar BCTMP pulp commercial pulp board is placed in water and soaked for 4 hours (wherein, the pulp board that needs to soak refers to the person whose dryness is equal to or greater than 20% mass fraction), and the mass concentration is controlled at 6% during soaking, Then utilize a disintegrating machine to carry out dissociation treatment to disperse the fibers, and the mass concentration of the slurry suspension after dissociation is controlled at 2%;

[0055] ⑵ Concentration of poplar BCTMP slurry: the dissociated slurry suspension is dehydrated by suction filtration to achieve the purpose of concentration, and the concentrated slurry is obtained. The mass concentration is controlled at 20%, and stored at low temperature (4°C) for subsequent use;

[0056] (3) Weigh the slurry after the s...

Embodiment 3

[0068] A method for achieving microfibrillation of chemical mechanical pulp and for enhancing the physical strength of paper, the steps are as follows:

[0069] (1) Slurry preparation: place the dry eucalyptus P-RCAPMP pulp commercial pulp board in water for 4 hours (wherein, the pulp board that needs to be soaked refers to those whose dryness is equal to or greater than 20% mass fraction), and the mass concentration is controlled during soaking. At 8%, then utilize a disintegrating machine to carry out dissociation treatment to disperse the fibers, and the mass concentration of the pulp suspension after dissociation is controlled at 3%;

[0070] (2) Concentration of eucalyptus P-RCAPMP slurry: the dissociated slurry suspension is dehydrated by suction filtration to achieve the purpose of concentration, and the concentrated slurry is obtained. The mass concentration is controlled at 30%, and placed at a low temperature of 4°C store for subsequent use;

[0071] (3) Weigh the s...

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Abstract

The invention relates to a method for realizing micro fiberization of chemical mechanical pulp and for enhancing physical strength of paper. The method comprises the following steps: (1) preparing slurry; (2) concentrating the slurry; (3) preparing alkali-treated slurry; (4) preparing a slurry suspension; (5) performing an oxidation reaction; (6) adding a NaClO solution; (7) stopping the reaction;(8) performing washing; (9) performing homogenizing; and (10) adding cellulose micro-nano fibrils into the suspension liquid of raw materials of paper pulp to realize the micro fiberization of the chemical mechanical pulp and enhance the physical strength of paper. According to the method, the advantages of good raw material applicability of the chemical mechanical pulp, high pulping yield and low pollution load and the like are utilized, so that the chemical mechanical pulp can replace bleached chemical pulp for preparing cellulose micro-nano fibrils, and can be used to enhance the physicalstrength performance of the paper; the production cost is reduced, a raw material foundation for subsequent process, utilization or production of high-added-value products is provided, and the application field and range of the chemical mechanical pulp is expanded.

Description

technical field [0001] The invention belongs to the technical field of combining pulping and papermaking with utilization of biomass resources, in particular a method capable of realizing chemical mechanical pulp microfibrilization and used for enhancing the physical strength of paper. Background technique [0002] With the world's increasing concern for environmental issues and the depletion of non-renewable resources such as coal, oil, and natural gas, the development and utilization of natural renewable resources has attracted more and more attention. Biomass resource is a natural renewable natural resource with abundant reserves, which has the characteristics of wide source and wide application. Biomass resources include cellulose, hemicellulose, lignin, chitin, chitosan, etc. From the perspective of components, these substances usually have the characteristics of diversification and unique structure, and they themselves have good biological phases. Compatibility and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/02D21B1/30D21C5/00D21C3/02D21D1/20
CPCD21B1/02D21B1/30D21C3/02D21C5/00D21D1/20
Inventor 刘苇王思侯庆喜
Owner TIANJIN UNIV OF SCI & TECH
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