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Nano bypass filter paper and preparation method thereof

A nano-filter paper technology, applied in the direction of filter paper, separation methods, chemical instruments and methods, etc., can solve the problems of loose filter paper, poor water resistance, and high tightness, and achieve compact paper, long service life, and good tightness Effect

Pending Publication Date: 2022-02-22
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

[0003] The present invention solves the problem that the bypass filter paper in the prior art is too tight, the filter paper is loose, the strength is low, and the water resistance is poor, which cannot meet the requirements of the production and processing of the filter element and the filter paper itself in use. Insufficient to provide a nano bypass filter paper with good tightness, compact paper quality, high strength, good water resistance, long service life, which can meet the high requirements of the production and processing of filter elements and the filter paper itself in use and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 40 parts of alkali-treated cotton linter pulp, 50 parts of hardwood pulp, 20 parts of fibrillated superfine fiber, 15 parts of borosilicate glass fiber, 5 parts of nylon fiber, 10 parts of nano-carbon fiber polymer, polycarbonate 5 parts of propylene ester, 30 parts of PET, and 45 parts of PP are prepared according to the following steps:

[0028] a) Alkaline-treated cotton linter pulp and hardwood pulp are taken, pulped by a pulper, and then refined by a refiner, and the pulping degree is 14 degrees;

[0029] b) Take fibrillated superfine fibers, borosilicate glass fibers, nylon fibers, and nano-carbon fiber polymers, and use a fiber deflagging machine to decompose, and then go through online grinding with a double-disc refiner to obtain a pulp with a slurry degree of 4°SR slurry;

[0030] c) Mix the slurry prepared through step a) and step b) in the pulping tank, add polypropylene carbonate and homogenize it, and then make it on the inclined wire paper machine o...

Embodiment 2

[0035] Take 50 parts of alkali-treated cotton linter pulp, 60 parts of hardwood pulp, 26 parts of fibrillated superfine fiber, 18 parts of borosilicate glass fiber, 10 parts of nylon fiber, 15 parts of nano-carbon fiber polymer, polycarbonate 7 parts of propylene ester, 35 parts of PET, and 70 parts of PP are prepared according to the following steps:

[0036] a) Alkaline-treated cotton linter pulp and hardwood pulp are taken, pulped by a pulper, and then refined by a refiner, and the pulping degree is 16 degrees;

[0037] b) Take fibrillated superfine fibers, borosilicate glass fibers, nylon fibers, and nano-carbon fiber polymers, and use a fiber deflagging machine to decompose, and then go through online grinding with a double-disc refiner to obtain a pulp with a slurry degree of 4.5°SR slurry;

[0038] c) Mix the slurry prepared through step a) and step b) in the pulping tank, add polypropylene carbonate and homogenize it, and then make it on the inclined wire paper machin...

Embodiment 3

[0043] Take 60 parts of alkali-treated cotton linter pulp, 70 parts of hardwood pulp, 30 parts of fibrillated superfine fiber, 20 parts of borosilicate glass fiber, 15 parts of nylon fiber, 20 parts of nano-carbon fiber polymer, polycarbonate 10 parts of propylene ester, 45 parts of PET, and 120 parts of PP are prepared according to the following steps:

[0044] a) Take alkali-treated cotton linter pulp and hardwood pulp, pulp it through a pulper, and then refine it through a refiner. The pulping degree is 18 degrees;

[0045] b) Take fibrillated superfine fibers, borosilicate glass fibers, nylon fibers, and nano-carbon fiber polymers, and use a fiber deflagging machine to decompose, and then go through online grinding with a double-disc refiner to obtain a pulp with a slurry degree of 5°SR slurry;

[0046] c) Mix the slurry prepared through step a) and step b) in the pulping tank, add polypropylene carbonate and homogenize it, and then make it on the inclined wire paper mach...

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Abstract

The invention relates to the technical field of bypass filter paper, and discloses nano bypass filter paper, which comprises base paper. The base paper comprises the following raw materials in parts by weight: 40-60 parts of alkali treated cotton linter pulp; 50 to 70 parts of hardwood pulp; 20 to 30 parts of fibrillated superfine fibers; 15 to 20 parts of borosilicate glass fibers; 5 to 15 parts of polyamide fibers; 10 to 20 parts of a nano carbon fiber polymer; and 5 to 10 parts of polypropylene carbonate. The main performance indexes of the bypass filter paper prepared by taking the raw materials according to the component proportion and adopting the following preparation method can reach that the filtering speed is smaller than or equal to 85 S, the water absorption height is larger than or equal to 155 mm, the stiffness is larger than or equal to 30 mN.m, the bursting strength is larger than or equal to 310 Kpa, and the water absorption capacity is larger than or equal to 330 g / m<2>. The nano bypass filter paper and the preparation method thereof have the beneficial effects that the tightness is good, the paper is compact, the strength is high, the water resistance is good, the service life is long, and the high requirements of production, processing and manufacturing of a filter element of a filter and the use of the filter paper can be met.

Description

technical field [0001] The invention relates to the technical field of bypass filter paper, in particular to a nano bypass filter paper and a preparation method thereof. Background technique [0002] Bypass filter paper is an important component of the oil filter, which is related to the overall performance of the oil filter. However, the existing bypass filter paper is a paper filter layer made of ordinary wood pulp as the main component. However, due to the finer fibers of ordinary wood pulp and high compactness, the bypass filter paper made generally has tightness. High, low filtration efficiency, short life, thick paper and other disadvantages, its filtration efficiency is generally lower than 90%, and paper bypass filter paper generally has poor curing and insufficient water resistance. When the air humidity changes, the paper is easy to Distortion occurs, which in turn affects the filtering effect. For example, the Chinese patent authorization publication number: CN1...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21F11/06
CPCD21H27/08D21F11/06
Inventor 王建业吴安波王雷闵月朱政
Owner 杭州特种纸业有限公司
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