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Nanometer quantitative filter paper and production method thereof

A technology of quantitative filter paper and qualitative filter paper, which is applied in the field of filter paper and can solve the problems of paper thickness of quantitative filter paper

Inactive Publication Date: 2016-09-07
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

At present, the filtration speed, filtration accuracy and stability of quantitative filter paper need to be further unified, and the sheets of quantitative filter paper are relatively thick

Method used

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  • Nanometer quantitative filter paper and production method thereof
  • Nanometer quantitative filter paper and production method thereof
  • Nanometer quantitative filter paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Nano-quantitative filter paper, in parts by weight, including bamboo pulp: 50 parts, asparagus pulp: 20 parts, coniferous wood pulp: 40 parts, cotton pulp: 30 parts, lignin: 0.2 parts, nanocellulose crystals: 1 part, dispersant: 0.2 parts, defoamer: 0.1 part, wet strength agent: 3 parts.

[0024] Described dispersant is polyoxyethylene; Described defoamer is butanol; Described bamboo pulp is the bamboo pulp that obtains through 200 mesh screens; Described bamboo pulp, asparagus pulp, coniferous wood pulp Both cotton and cotton paddles need to be treated with hydrochloric acid and hydrofluoric acid respectively, and the pulp obtained by washing with distilled water.

[0025] The preparation method of above-mentioned nanometer quantitative filter paper, comprises the steps:

[0026] 1) Slurries obtained by treating bamboo pulp, asparagus pulp, softwood pulp and cotton pulp with hydrochloric acid and hydrofluoric acid respectively, and washing with distilled water.

[00...

Embodiment 2

[0033] Nano-quantitative filter paper, in parts by weight, including bamboo pulp: 80 parts, asparagus pulp: 40 parts, coniferous wood pulp: 80 parts, cotton pulp: 80 parts, lignin: 5 parts, nanocellulose crystals: 5 parts, dispersant: 0.2 parts, defoamer: 0.3 parts, wet strength agent: 3 parts.

[0034] The dispersant is anionic polyacrylamide; the defoamer is silicone oil; the bamboo pulp is obtained through a 200-mesh screen; the bamboo pulp, asparagus pulp, softwood Both pulp and cotton paddle need to be treated with hydrochloric acid and hydrofluoric acid respectively, and the pulp obtained by washing with distilled water.

[0035] The preparation method of above-mentioned nanometer quantitative filter paper, comprises the steps:

[0036] 1) Slurries obtained by treating bamboo pulp, asparagus pulp, softwood pulp and cotton pulp with hydrochloric acid and hydrofluoric acid respectively, and washing with distilled water.

[0037] 2) Add water to the bamboo pulp, asparagus...

Embodiment 3

[0043] Nano-quantitative filter paper, in parts by weight, including bamboo pulp: 60 parts, asparagus pulp: 25 parts, coniferous wood pulp: 50 parts, cotton pulp: 60 parts, lignin: 2.5 parts, nanocellulose crystals: 3 parts, dispersant: 0.5 parts, defoamer: 0.2 parts, wet strength agent: 2.0 parts.

[0044] Described dispersant is polyoxyethylene; Described defoamer is pine oil; Described bamboo pulp is the bamboo pulp that obtains through 200 mesh screens; Described bamboo pulp, asparagus pulp, coniferous wood pulp Both cotton and cotton paddles need to be treated with hydrochloric acid and hydrofluoric acid respectively, and the pulp obtained by washing with distilled water.

[0045] The preparation method of above-mentioned nanometer quantitative filter paper, comprises the steps:

[0046] 1) Slurries obtained by treating bamboo pulp, asparagus pulp, softwood pulp and cotton pulp with hydrochloric acid and hydrofluoric acid respectively, and washing with distilled water. ...

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Abstract

The invention discloses a nanometer quantitative filter paper. The nanometer quantitative filter paper is made from, by weight, 30-80 parts of bamboo pulp, 5-40 parts of a Juncus effusus pulp, 30-80 parts of softwood pulp, 30-80 parts of cotton pulp, 0.2-5 parts of lignin, 1-5 parts of cellulose nano-crystals, 20-40 parts of water-soluble polyethelene alcohol fibers, 0.5-3 parts of a wet strength agent, 0.2-0.8 parts of a dispersant and 0.1-0.3 parts of an antifoaming agent. Cellulose nanofibers are obtained through adding all above pulps to an ultrahigh pressure micro-jet nanodisperser, are harder and lighter than iron, and can be used in the filter paper industry to realize paper lightening, and the added cellulose nano-crystals can be closely combined with paper pulp fibers in order to improve the combination force among the paper pulp fibers.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a nano quantitative filter paper and a preparation method thereof. Background technique [0002] Quantitative filter paper belongs to cellulose filter paper, which is a kind of paper with good filtration performance. The paper is loose and has strong absorption performance for liquids. Therefore, it is often used as a filter medium in chemical analysis experiments to separate solids and liquids. In the manufacturing process, the pulp is treated with hydrochloric acid and hydrofluoric acid, and washed with deionized water to remove most of the paper fibers, so there is little residual ash after burning, which has almost no effect on the analysis results, and is suitable for precision quantitative analysis. At present, the filtration speed, filtration accuracy and stability of quantitative filter paper need to be further unified, and the sheets of quantitative filter paper ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21H11/00D21C9/00D21C5/00D21H17/25D21H21/08D21H21/12D21H21/20D21H27/08
CPCD21H11/12D21C5/00D21C9/004D21H11/00D21H17/06D21H17/13D21H17/25D21H17/46D21H17/55D21H17/62D21H21/08D21H21/12D21H21/20D21H27/08
Inventor 吴安波
Owner 杭州特种纸业有限公司
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