Preparation method of machine air filter paper

A technology of machine air filter paper and solution, applied in the field of filter paper, can solve the problem of resin protective layer falling off, and achieve the effect of high removal rate, enhanced adsorption effect, high activity and adsorption performance

Active Publication Date: 2019-02-19
马鞍山华旺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the problem that the resin protective layer in the machine air filter paper in the prior art is easy to fall off from the surface of the base paper, and provides a preparation method of the machine air filter paper. The resin protective layer of the machine air filter paper prepared by the invention has a strong bonding force , the resin protective layer is not easy to fall off from the base paper surface, so it has a lasting protective effect on the base paper and prolongs the service life of the machine air filter paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of modified coral reef powder:

[0031]After crushing the coral reef, roast it at a high temperature of 250° C. for 4 hours to obtain coral reef particles, and set aside; add the salvianolic acid extract to a 70% ethanol aqueous solution to prepare a solution with a concentration of 7 wt % salvianolic acid extract, and prepare the coral reef particles Add the salvianolic acid extract solution with the epoxy silane coupling agent at a mass ratio of 1:0.3, the mass ratio of coral reef particles to the salvianolic acid extract is 1:4, and stir and react at 58°C for 4.5h. After filtering, washing with water and drying, the modified coral reef powder is obtained.

[0032] Preparation method of base paper:

[0033] a) mixing reed pulp, loofah fiber, and bamboo fiber for beating, the mass ratio of reed pulp, loofah fiber, and bamboo fiber is 1:0.35:3, and diluted with water to form a slurry 1 with a concentration of 2.2wt%;

[0034] b) Add modified cor...

Embodiment 2

[0042] The preparation method of modified coral reef powder:

[0043] After the coral reef is crushed, it is roasted at a high temperature of 210°C for 2.5h to obtain coral reef particles, and it is set aside; the salvianolic acid extract is added to a 70% ethanol aqueous solution to prepare a 6wt% salvianolic acid extract solution, and the coral reef The particles and epoxy silane coupling agent were added into the salvianolic acid extract solution at a mass ratio of 1:0.2, the mass ratio of coral reef particles to salvianolic acid extract was 1:3, and stirred and reacted at 56°C for 3.5h , filtered, washed with water, and dried to obtain the modified coral reef powder.

[0044] Preparation method of base paper:

[0045] a) mixing reed pulp, loofah fiber, and bamboo fiber for beating, the mass ratio of reed pulp, loofah fiber, and bamboo fiber is 1:0.25:3, and diluted with water to form a slurry 1 with a concentration of 2.1wt%;

[0046] b) Add modified coral reef powder an...

Embodiment 3

[0054] The preparation method of modified coral reef powder:

[0055] After crushing the coral reef, roast it at a high temperature of 270° C. for 5 hours to obtain coral reef particles, which are set aside; add the salvianolic acid extract to a 70% ethanol aqueous solution to prepare a solution with a concentration of 8 wt % salvianolic acid extract, and prepare the coral reef particles Add the salvianolic acid extract solution with the epoxy silane coupling agent at a mass ratio of 1:0.4, the mass ratio of the coral reef particles to the salvianolic acid extract is 1:4, stir and react at 58°C for 5h, after Filter, wash with water, and dry to obtain the modified coral reef powder.

[0056] Preparation method of base paper:

[0057] a) mixing reed pulp, loofah fiber, and bamboo fiber for beating, the mass ratio of reed pulp, loofah fiber, and bamboo fiber is 1:0.4:4, and diluted with water to form a slurry 1 with a concentration of 2.5wt%;

[0058] b) Add modified coral reef...

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PUM

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Abstract

The invention relates to the technical field of filter paper, and discloses a preparation method of machine air filter paper. The preparation method includes the steps: soaking raw paper into trimesoyl chloride solution; soaking the raw paper into oil-phase solution; soaking the raw paper into 1, 2, 6-hexanetriol water-phase solution; performing interfacial polymerization reaction on the raw paperin the water-phase solution to generate polyurethane polymer resin; covering the surface of the raw paper with a polyurethane resin protection layer. The resin protection layer is connected with theraw paper through the bonding action force of a chemical bond, the resin protection layer and the raw paper cannot be easily separated under the influence of outside conditions, so that the raw paperis protected for a long time, and the service life of the machine air filter paper is prolonged.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a preparation method of machine air filter paper. Background technique [0002] Machine air filter paper is a key component of oil filter and air filter, which determines the performance of the two filters. Machine air filter paper usually includes a paper filter layer made of ordinary wood pulp as the main component. Because ordinary wood pulp fibers are finer and tighter, the machine air filter paper made generally has high tightness, It has the characteristics of low filtration efficiency and short life, and as an air filter paper, it needs to adapt to both the air and high-temperature oil environments at the same time, and its performance requirements are higher. The preparation method of the air filter paper in the prior art is generally to prepare the base paper first, and then cover the resin protective layer on both sides of the base paper by dipping or spraying to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H11/12D21F11/14D21H17/69D21H19/12D21H19/14D21H19/24D21H21/36
CPCD21F11/14D21H11/12D21H17/69D21H19/12D21H19/14D21H19/24D21H21/36D21H27/08
Inventor 黄丽霞张鹏飞王丽娟
Owner 马鞍山华旺新材料科技有限公司
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