A kind of special sepiolite fiber for papermaking and preparation method thereof

A technology of sepiolite fiber and sepiolite, which is applied in the directions of fiber processing, textile and papermaking, physical processing, etc., can solve the adverse effects of paper performance and strength indicators, difficulty in exerting fiber network support, and reduced paper sheet strength properties. and other problems to achieve the effect of increasing the number, increasing the softness, increasing the strength and toughness

Active Publication Date: 2017-10-24
联兴食品药品包装技术(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brittleness of sepiolite fiber is strong, and the fiber structure is easily destroyed during processing and sheet forming, resulting in shorter fiber length and hindering the hydrogen bonding between fibers, making it difficult for sepiolite fiber to exert its network support property, which reduces the strength performance of the paper sheet, and with the increase of the added amount of sepiolite fiber, it will also have a certain degree of adverse effect on the paper performance, especially the strength index.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) adding 10 parts by weight of carbon nanotubes into a 40% sulfuric acid solution and stirring for 2 to 3 h, washing until the solution is 5 to 7, filtering and drying to obtain acidified carbon nanotubes;

[0026] (2) Make 70 parts by weight of sepiolite fibers with layered fibers into a pulp concentration of 10%, soak for 24 h, add the acidic carbon nanotubes obtained in step (1), and add 8 parts by weight of hexametaphosphoric acid Sodium, use ultrasonic wave to disperse for 30~40min, and get modified sepiolite fiber by centrifugal filtration;

[0027] (3) Put the modified sepiolite fibers obtained in step (2) and 10 parts by weight of β-cyclodextrin into the plasma equipment, set the power at 80 W, the pressure at 30 Pa, and discharge for 5 min to obtain Cyclodextrin-modified sepiolite fibers were added to cetyltrimethylammonium bromide solution with a mass fraction of 10%, and stirred and mixed for 10-20 min to make the cationic surfactant cetyltrimethylammonium ...

Embodiment 2

[0029] (1) adding 10 parts by weight of carbon nanotubes into a sulfuric acid solution with a concentration of 40% and stirring for 2-3 h, washing until the solution is 5-7, filtering and drying to obtain acidified carbon nanotubes;

[0030] (2) Prepare 70 parts by weight of sepiolite fibers with layered fibers to a pulp concentration of 10%, soak for 24 hours, add the acidic carbon nanotubes obtained in step (1), and add 8 parts by weight of polyphosphoric acid Sodium, use ultrasonic wave to disperse for 30~40min, and get modified sepiolite fiber by centrifugal filtration;

[0031](3) Put the modified sepiolite fiber obtained in step (2) and 20 parts by weight of carboxymethyl β-cyclodextrin into the plasma equipment, set the power at 80 W, the pressure at 20 Pa, and discharge for 10 min to obtain cyclodextrin-modified sepiolite fibers, which were added to cetyltrimethylammonium bromide solution with a mass fraction of 20%, and stirred and mixed for 10-20 min to make the cati...

Embodiment 3

[0033] (1) adding 20 parts by weight of carbon nanotubes into a sulfuric acid solution with a concentration of 60% and stirring for 2-3 h, washing until the solution is 5-7, filtering and drying to obtain acidified carbon nanotubes;

[0034] (2) Make 60 parts by weight of sepiolite fibers with layered fibers into a pulp concentration of 5%, soak for 24 h, add the acidic carbon nanotubes obtained in step (1), and add 5 parts by weight of sodium triphosphate , use ultrasonic wave to disperse for 30~40min, and obtain modified sepiolite fiber by centrifugal filtration;

[0035] (3) Put the modified sepiolite fiber obtained in step (2) and 10 parts by weight of methyl β-cyclodextrin into the plasma equipment, set the power at 80 W, the pressure at 20 Pa, and discharge for 10 min , to obtain cyclodextrin-modified sepiolite fiber, add it to cetyltrimethylammonium bromide solution with a mass fraction of 10%, and stir and mix for 10~20 min to make the cationic surfactant cetyltrimethy...

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Abstract

The invention belongs to the field of inorganic mineral fiber and particularly relates to sepiolite fiber special for paper making and a preparing method thereof. The sepiolite fiber is characterized by being flexible fiber formed by layered fiber sepiolite, carbon nanometer tubes and cyclodextrin in a penetrating and inserting mode and provided with a network structure. According to the sepiolite fiber, ultrasonic waves are utilized for dispersing to enable the acidified carbon nanometer tubes to penetrate and insert into the layered structure of the sepiolite fiber, and the sepiolite fiber and cyclodextrin molecules react under radiation of oxygen plasmas, so that the cyclodextrin molecules wrap the surface of the sepiolite fiber, strength and toughness of the fiber are improved, and damage to the fiber structure from mechanical force in the papermaking process is avoided; meanwhile, active groups on the surface of the sepiolite fiber are increased, softness and dispersibility of the sepiolite fiber are improved, and binding force of the sepiolite fiber and plant fiber is increased. When the sepiolite fiber is used for manufacturing paper, the softness of the paper can be improved obviously, and the paper is good in handfeel and light.

Description

technical field [0001] The invention belongs to the field of inorganic mineral fibers, in particular to a special sepiolite fiber for papermaking and a preparation method thereof. Background technique [0002] The paper industry plays an important role in the global economy and civilization, and its output value accounts for 2.5% of the world's total industrial output value and 2% of the world's total trade. Wood is the main raw material of the papermaking industry, accounting for more than 93% of the raw materials for papermaking. my country is a country lacking in forest resources. The grass plant fibers mainly used in papermaking are difficult to recycle waste liquid and prevent pollution during the pulping process. It has a serious impact on the environment, so it is of great significance to seek new non-plant fiber substitutes. my country has relatively rich mineral fiber resources. Using mineral fiber to replace part of plant fiber as pulp raw material can not only red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/463D06M10/10D06M11/74
CPCD06M10/10D06M11/74D06M13/463
Inventor 张锦明
Owner 联兴食品药品包装技术(东莞)有限公司
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