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Preparation method of pressure-resistant oil filter paper

A technology of oil filter paper and pressure resistance, which is applied in the field of preparation of pressure-resistant oil filter paper, which can solve the problems of low pressure resistance and easy damage of filter paper, and achieve the effects of improving filtration accuracy, improving adsorption effect, and good adsorption function

Active Publication Date: 2019-03-22
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 aims to overcome the problems of low pressure resistance and easy breakage of filter paper in the prior art, and provides a preparation method of pressure-resistant oil filter paper. The oil filter paper has strong pressure resistance and the filter paper cannot be broken during the filtering process.

Method used

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  • Preparation method of pressure-resistant oil filter paper

Examples

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Effect test

Embodiment 1

[0028] The preparation method of modified activated clay comprises the following steps:

[0029] Add the montmorillonite powder into a hydrochloric acid solution with a concentration of 3.5wt% and soak for 8 hours, the mass ratio of the montmorillonite and hydrochloric acid is 1:0.3, filter and separate, and dry at 60° C. for 2 hours to obtain the activated montmorillonite powder; Dodecyl dimethyl ammonium chloride is added in water and is mixed with concentration and is 15wt% glycidyl dodecyl dimethyl ammonium chloride aqueous solution, to epoxypropyl dodecyl dimethyl ammonium chloride aqueous solution Add alginic acid to the mixture, the mass ratio of epoxypropyl dodecyl dimethyl ammonium chloride to alginic acid is 1:8, react at 43°C for 25min, then add acetone, precipitate, wash and dry to obtain quaternary Ammonification modified alginic acid; adding activated montmorillonite powder into 4wt% calcium hydroxide water solution, wherein the mass ratio of activated montmorill...

Embodiment 2

[0036] The preparation method of modified activated clay comprises the following steps:

[0037] Add the montmorillonite powder into a 2.5wt% hydrochloric acid solution and soak for 6 hours, the mass ratio of the montmorillonite to hydrochloric acid is 1:0.3, filter and separate, and dry at 45° C. for 1.5 hours to obtain the activated montmorillonite powder; Glycidyl dodecyl dimethyl ammonium chloride is added in water and is mixed with concentration and is 12wt% glycidyl dodecyl dimethyl ammonium chloride aqueous solution, to epoxy propyl dodecyl dimethyl ammonium chloride Add alginic acid to the aqueous solution, the mass ratio of epoxypropyl dodecyl dimethyl ammonium chloride to alginic acid is 1:6, react at 41°C for 22 minutes, then add acetone, precipitate, wash and dry to obtain Quaternized modified alginic acid; adding activated montmorillonite powder into a water solution with a mass concentration of 2.5wt% calcium hydroxide, wherein the mass ratio of activated montmor...

Embodiment 3

[0044] The preparation method of modified activated clay comprises the following steps:

[0045] Add the montmorillonite powder into a 4.5wt% hydrochloric acid solution and soak for 8 hours, the mass ratio of the montmorillonite to hydrochloric acid is 1:0.4, filter and separate, and dry at 75° C. for 2.5 hours to obtain the activated montmorillonite powder; Glycidyl dodecyl dimethyl ammonium chloride is added in water and is mixed with concentration and is 18wt% glycidyl dodecyl dimethyl ammonium chloride aqueous solution, to epoxy propyl dodecyl dimethyl ammonium chloride Add alginic acid to the aqueous solution, the mass ratio of epoxypropyl dodecyl dimethyl ammonium chloride to alginic acid is 1:9, react at 44°C for 27 minutes, then add acetone, precipitate, wash and dry to obtain Quaternized modified alginic acid; add the activated montmorillonite powder into the calcium hydroxide solution with a mass concentration of 5wt%, wherein the mass ratio of the activated montmori...

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Abstract

The invention relates to the technical field of preparation of filter paper, and discloses a preparation method of a pressure-resistant oil filter paper, which solves the problems of low pressure-resistant property and liability in damage of the filter paper in the prior art. The preparation method comprises the following steps of mixing abaca fibers and ramie fibers, and pulping; adding glass fibers, modified activated clay and an epoxy silane coupling agent, uniformly mixing, performing paper making on a net, and forming, so as to obtain raw paper; respectively impregnating the raw paper into a carboxymethyl chitosan water solution and a polyvinyl acetate hydrolysis solution, and performing crosslinking reaction, so as to obtain an intermediate of the oil filter paper; applying water-soluble phenolic resin to the surface of the intermediate of the oil filter paper in an impregnating way, so as to obtain the pressure-resistant oil filter paper. The pressure-resistant oil filter paperhas stronger pressure-resistant function, and the liability in breaking of the filter paper is avoided in the filtering process.

Description

technical field [0001] The invention relates to the technical field of filter paper preparation, in particular to a preparation method of pressure-resistant oil filter paper. Background technique [0002] With the development of society and economy, petroleum, automobile, engineering machinery, power generation industry, metallurgical industry and other industries produce oil (such as all kinds of high-grade lubricating oil, generator set turbine oil, internal combustion engine oil, power supply transformer oil and heavy machinery hydraulic system oil) The amount is getting bigger and bigger, and after a period of use of various lubricating oils, the solid impurities, moisture, gas and sludge will increase, making the quality of the oil continue to deteriorate. Solid impurities will destroy the oil film and accelerate the damage of equipment. When the particle size of solid impurities is larger than or close to the friction gap, the damage to the equipment will be particular...

Claims

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Application Information

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IPC IPC(8): D21H27/08D21H11/12D21H13/40D21H21/14D21H21/16D21F11/14D21H17/24D21H17/36D21H17/48
CPCD21F11/14D21H11/12D21H13/40D21H17/24D21H17/36D21H17/48D21H21/14D21H21/16D21H27/08
Inventor 王建业吴琼华吴安波
Owner 杭州特种纸业有限公司