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Plant paper pulp fiber modifying agent and modifying method using same, and filter paper and preparation method thereof

A pulp fiber and modification technology, which is applied in the field of modification and filter paper preparation, can solve the problems of high cost of filter paper, inability to realize plant pulp fiber modification, etc., and achieve the effects of small pore size, high air permeability and low cost

Inactive Publication Date: 2011-11-02
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that there is no plant pulp fiber modification agent and modification method in the prior art for processing plant fiber filter paper raw materials, so the modification of plant pulp fibers cannot be realized, and the cost of the filter paper prepared by the prior art is high, or The prepared filter paper cannot have the problem of small pore size while ensuring high air permeability, and provides plant pulp fiber modifying agents and modification methods for preparing filter paper, filter paper and preparation methods

Method used

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  • Plant paper pulp fiber modifying agent and modifying method using same, and filter paper and preparation method thereof
  • Plant paper pulp fiber modifying agent and modifying method using same, and filter paper and preparation method thereof
  • Plant paper pulp fiber modifying agent and modifying method using same, and filter paper and preparation method thereof

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specific Embodiment approach 1

[0015] Embodiment 1: This embodiment provides a medicament for plant pulp fiber modification:

[0016] The medicament of plant pulp fiber modification is made up of inorganic salt, distilled water and dehydrated alcohol; Wherein the mol ratio of inorganic salt and distilled water is 1: (10~15), and the mol ratio of dehydrated alcohol and distilled water is 1: (10~15 ).

[0017] Zinc chloride in the modified agent prepared in this embodiment has the effect of dissolving pulp fibers, and ethanol can accelerate the penetration of the agent into the fiber cell wall, and at the same time, the metal ions in the agent can form ionic bond coordination with the carboxyl groups on the fiber to form pulp fibers. Fiber modification provides a good premise and foundation.

specific Embodiment approach 2

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the inorganic salt is zinc chloride, calcium nitrate, magnesium chloride or calcium chloride, or is zinc chloride and calcium nitrate in molar ratio 1: (0.5~2) mixed mixture, zinc chloride and magnesium chloride mixed mixture in molar ratio 1: (0.5~2), zinc chloride and calcium chloride mixed mixture in molar ratio 1: (0.5~2), magnesium chloride The mixture with calcium nitrate in molar ratio 1:(0.5~2), the mixture of calcium chloride and calcium nitrate in molar ratio 1:(0.5~2), or the molar ratio of calcium chloride and magnesium chloride in 1:(0.5 ~2) Mixed mixture. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the molar ratio of the inorganic salt and distilled water in the modified liquid described in step one is 1: 12, the ratio of dehydrated alcohol and distilled water The molar ratio is 1:12. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a modifying method of a plant paper pulp fiber modifying, and filter paper and a preparation method thereof, belonging to the fields of modification of plant paper pulp fiber and preparation of filter paper. The invention aims to solve the problem of failure to implement modification of plant paper pulp fiber since no plant paper pulp fiber modifying agent and modifying method exist in the prior art, and the problem of high cost in the prepared filter paper in the prior art, or that the prepared filter paper can not have small pore size on the premise of ensuring high air permeability. The plant paper pulp fiber modifying method comprises the following steps: 1. preparing the modifying agent; and 2. modifying. The filter paper is prepared from the following components in parts by weight: 15-45 parts of plant paper pulp fiber modified sulfate softwood pulp, 5-15 parts of sulfate hardwood pulp and 45-75 parts of plant paper pulp fiber modified mercerized sulfate softwood pulp. The invention is used for modifying plant paper pulp fiber and preparing filter paper.

Description

technical field [0001] The invention relates to the field of modification of plant pulp fiber and preparation of filter paper. Background technique [0002] Filter paper has the advantages of high efficiency, small size, light weight, easy to use, easy to clean, etc. It has broad development space in the automobile industry, wine, medicine, chemical industry and other industries. [0003] Plant fiber is the classic and main raw material for papermaking, and its papermaking not only has good strength performance, but also has good air permeability. However, as a filter material, it is difficult for the conventional processing method and papermaking process of ordinary pulp fibers to make the filter paper maintain a high air permeability and have a small pore size at the same time. For example: broad-leaved wood pulp has thin and short fibers, many fibers per unit weight, and many intersection points, which are reflected in the structural performance of filter paper with smal...

Claims

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Application Information

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IPC IPC(8): D21H11/20D21H27/08D21F13/02
Inventor 刘文波唐立生于钢
Owner NORTHEAST FORESTRY UNIVERSITY
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