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Nano qualitative filter paper and preparing method thereof

A qualitative filter paper, nanotechnology, applied in the field of filter paper, can solve the problems of poor water resistance, paper leakage, poor filtration performance of qualitative filter paper, etc.

Inactive Publication Date: 2016-07-13
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The qualitative filter paper currently used in the market uses a single wood pulp as a raw material, resulting in poor filtration performance and poor water resistance of the qualitative filter paper. After a short period of filtration, it is easy to cause the paper to leak, and the paper is relatively thick.

Method used

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  • Nano qualitative filter paper and preparing method thereof
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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Nano-qualitative filter paper, in parts by weight, including bamboo pulp: 30 parts, asparagus pulp: 5 parts, coniferous wood pulp: 30 parts, lignin: 0.2 parts, nanocellulose crystals: 1 part, water-soluble polyethylene Alcohol fiber: 20 parts, dispersant: 0.2 part, defoamer: 0.1 part, wet strength agent: 0.5 part.

[0023] The dispersant is polyoxyethylene; the defoamer is butanol; the bamboo pulp is obtained through a 200-mesh screen.

[0024] The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:

[0025] 1) Mix bamboo pulp, asparagus pulp and coniferous wood pulp with water according to the amount of ingredients, peel and tear them into diameters of 15-100nm and lengths of 200nm-20 Micron cellulose nanofiber slurry, the weight percentage of cellulose nanofibers in the slurry is 10%;

[0026] 2) Dispersing the nanocellulose crystals of the batching amount in water to obtain a stable nanocellulose crystal colloid, wherein t...

Embodiment 2

[0031] Nano-qualitative filter paper, in parts by weight, including bamboo pulp: 80 parts, asparagus pulp: 40 parts, coniferous wood pulp: 80 parts, lignin: 5 parts, nanocellulose crystals: 5 parts, water-soluble polyethylene Alcohol fiber: 40 parts, dispersant: 0.8 parts, defoamer: 0.3 parts, wet strength agent: 3 parts.

[0032] The dispersant is polyoxyethylene; the defoamer is silicone oil; and the bamboo pulp is obtained through a 200-mesh screen.

[0033] The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:

[0034] 1) Mix bamboo pulp, asparagus pulp and coniferous wood pulp with water according to the amount of ingredients, peel and tear them into diameters of 15-100nm and lengths of 200nm-20 Micron cellulose nanofiber slurry, the weight percentage of cellulose nanofibers in the slurry is 30%;

[0035] 2) Dispersing the nanocellulose crystals of the batching amount in water to obtain a stable nanocellulose crystal colloid,...

Embodiment 3

[0040] Nano-qualitative filter paper, in parts by weight, including bamboo pulp: 480 parts, asparagus pulp: 25 parts, coniferous wood pulp: 50 parts, lignin: 2.5 parts, nano-cellulose crystals 3 parts, water-soluble polyvinyl alcohol Fiber: 29 parts, dispersant: 0.5 part, defoamer: 0.2 part, wet strength agent: 2.0 part.

[0041] The dispersant is polyacrylamide; the defoamer is pine oil; and the bamboo pulp is obtained through a 200-mesh screen.

[0042] The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:

[0043] 1) Mix bamboo pulp, asparagus pulp and coniferous wood pulp with water according to the amount of ingredients, peel and tear them into diameters of 15-100nm and lengths of 200nm-20 Micron cellulose nanofiber slurry, the weight percentage of cellulose nanofibers in the slurry is 20%;

[0044] 2) Dispersing the nanocellulose crystals of the batching amount in water to obtain a stable nanocellulose crystal colloid, where...

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Abstract

The invention discloses nano qualitative filter paper.The nano qualitative filter paper is prepared from, by weight, 30-80 parts of bamboo pulp, 5-40 parts of herba junci setchuensis pulp, 30-80 parts of softwood pulp, 0.2-5 parts of lignin, 1-5 parts of nano-crystalline cellulose, 20-40 parts of water-soluble polyvinyl alcohol fiber, 0.5-3 parts of a wet-strength agent, 0.2-0.8 part of a dispersing agent and 0.1-0.3 part of a defoaming agent.All the pulp is treated through an ultrahigh-pressure microjet nano dispersion machine to obtain cellulose nanofibers, and the cellulose nanofibers are harder and lighter than iron and can realize paper sheet light weight when used in the filter paper industry; the added nano-crystalline cellulose can be tightly combined with pulp fibers, and therefore binding force between pulp fibers is increased.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a nanometer qualitative filter paper and a preparation method thereof. Background technique [0002] Qualitative filter paper is a filter paper used to detect the composition of substances, mainly used in laboratories. The qualitative filter paper currently used in the market uses a single wood pulp as a raw material, resulting in poor filtration performance and poor water resistance of the qualitative filter paper. After a short period of filtration, it is easy to cause the paper to leak, and the paper is relatively thick. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art, and provide a nano qualitative filter paper with good filtration performance, good water resistance, long service life and light weight of paper sheets. [0004] For realizing the purpose of the invention, the technical scheme that the...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H11/12D21H15/02D21H13/14D21H21/08D21H21/12D21H21/20
CPCD21H27/08D21H11/12D21H13/14D21H15/02D21H21/08D21H21/12D21H21/20
Inventor 吴安波
Owner 杭州特种纸业有限公司
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