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Quantitative filter paper and preparation method thereof

A technology for quantitative filter paper and parts by weight, which is applied in the direction of filter paper, separation methods, chemical instruments and methods, etc., and can solve the problems of inability to meet the requirements of filter paper, poor strength and toughness of filter paper, etc.

Pending Publication Date: 2021-09-28
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the filter paper in the prior art has poor strength and toughness and cannot meet the requirements of the filter paper in the suction filtration method, the present invention provides a quantitative filter paper with high strength and good toughness, which is not easily damaged during the suction filtration process and has low ash content. Filter paper and its preparation method

Method used

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  • Quantitative filter paper and preparation method thereof

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Effect test

Embodiment 1

[0027] A quantitative filter paper, obtained in parts by weight: 40 parts of alkali-treated cotton linter pulp; 30 parts of hardwood pulp; 20 parts of mixed plant fiber; wherein the mixed plant fiber includes 5 parts of mulberry fiber; 5 parts 5 parts of green sandalwood fiber; 5 parts of ramie fiber; 5 parts of aloe cotton fiber.

[0028] Follow the steps below to prepare targeted rapid qualitative filter paper:

[0029] a) The alkali-treated cotton linter pulp is deflagged with a fiber deflagging machine, and at the same time, 1 part of vinyl bisstearamide and 1 part of polyamide polyepichlorohydrin resin are added, and then polished online by a double-disc refiner to obtain Pulp slurry with a pulping degree of 16-18°SR;

[0030] b) Defiber the hardwood pulp and mixed plant fibers with a fiber defiberizer, add 1 part of vinyl bis stearamide and 1 part of polyamide polyepichlorohydrin resin at the same time, and then grind on-line with a double disc refiner to obtain pulp P...

Embodiment 2

[0034] A quantitative filter paper, obtained in parts by weight: 60 parts of alkali-treated cotton linter pulp; 40 parts of hardwood pulp; 32 parts of mixed plant fibers; wherein the mixed plant fibers include 8 parts of mulberry fibers; 8 parts 8 parts of green sandalwood fiber; 8 parts of ramie fiber; 8 parts of aloe cotton fiber.

[0035] Follow the steps below to prepare targeted rapid qualitative filter paper:

[0036] a) The alkali-treated cotton linter pulp is defiberized with a defiberizing machine, and 1.2 parts of vinyl bisstearamide and 1.2 parts of polyamide polyepichlorohydrin resin are added at the same time, and then polished online by a double-disc refiner. Pulp slurry with a pulping degree of 16-18°SR;

[0037] b) Defiber the hardwood pulp and mixed plant fibers with a fiber defiberizer, add 1.2 parts of vinyl bis stearamide and 1.2 parts of polyamide polyepichlorohydrin resin at the same time, and then grind on-line with a double disc refiner to obtain pulp ...

Embodiment 3

[0041] A quantitative filter paper, obtained in parts by weight: 80 parts of alkali-treated cotton linter pulp; 50 parts of hardwood pulp; 32 parts of mixed plant fibers; wherein the mixed plant fibers include 8 parts of mulberry fibers; 8 parts 8 parts of green sandalwood fiber; 8 parts of ramie fiber; 8 parts of aloe cotton fiber.

[0042] Follow the steps below to prepare targeted rapid qualitative filter paper:

[0043] a) The alkali-treated cotton linter pulp is defiberized with a defiberizing machine, and 1.2 parts of vinyl bisstearamide and 1.2 parts of polyamide polyepichlorohydrin resin are added at the same time, and then polished online by a double-disc refiner. Pulp slurry with a pulping degree of 16-18°SR;

[0044] b) Defiber the hardwood pulp and mixed plant fibers with a fiber defiberizer, add 1.2 parts of vinyl bis stearamide and 1.2 parts of polyamide polyepichlorohydrin resin at the same time, and then grind on-line with a double disc refiner to obtain pulp ...

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Abstract

The invention relates to the technical field of filter materials, and discloses quantitative filter paper which comprises the following components in parts by weight: 40-80 parts of alkali-treated cotton linter pulp; 30-50 parts of hardwood pulp; 20-40 parts of mixed plant fiber; the mixed plant fibers comprise one or a combination of more of mulberry fibers, paper mulberry fibers, pteroceltis tatarinowii fibers, ramie fibers and aloe cotton fibers. The quantitative filter paper and the preparation method thereof have the beneficial effects that the quantitative filter paper is high in strength, good in toughness, not easy to damage in the suction filtration process, low in ash content and convenient to use, and the accuracy of experimental data is improved.

Description

technical field [0001] The invention relates to the technical field of filter materials, in particular to a quantitative filter paper and a preparation method thereof. Background technique [0002] Quantitative filter paper is mainly used for ashing weighing analysis experiments after filtration, that is, gravimetric analysis tests and corresponding analysis tests in quantitative chemical analysis. The ash weight of each filter paper after ashing is a fixed value. Quantitative filter paper is used in laboratories. In the actual situation, in order to speed up the filtration, the method of suction filtration is adopted. During the suction filtration, in order to prevent the filter paper from being damaged and cause the filtration failure, the operator will stack multiple layers of filter paper in the funnel according to the suction force. This will lead to excessive resistance, the improvement of filtration speed is not obvious, the consumption of quantitative filter paper in...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H11/12D21H11/00D21H21/08D21H21/20D21H17/14D21H17/55B01D39/18
CPCD21H27/08D21H11/12D21H11/00D21H21/08D21H21/20D21H17/14D21H17/55B01D39/18B01D2239/10B01D2239/1216B01D2239/1291
Inventor 王建业吴琼华吴安波朱政
Owner 杭州特种纸业有限公司
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