CN103382685A - Filter paper with high filtration precision and preparation method thereof - Google Patents

Abstract

The invention discloses a filter paper with high filtration precision. The filter paper comprises the following raw materials by weight: 90 to 100 parts of bamboo pulp, 12 to 15 parts of a cellulose acetate fiber, 10 to 12 parts of a mineral wool fiber, 3 to 4 parts of stearic acid, 2 to 3 parts of nanometer silica, 2 to 3 parts of dolomite dust, 5 to 6 parts of micro wax powder, 1 to 2 parts of nekal, 1 to 3 parts of glycerol triacetate, 2 to 3 parts of oxidized polyethlene wax, 0.8 to 1 part of dimethyl diisooctyl mercaptoacetate, 0.6 to 1 part of aminopropyltriethoxysilane, 0.1 to 0.2 part of alumina powder, 3 to 5 parts of a wet strength agent PAE, 6 to 10 parts of rosin, 15 to 20 parts of absolute ethyl alcohol, 1 to 2 parts of lauryl polyoxyethylene ether and a proper amount of water. The filter paper produced in the invention has high filtration precision, high filtration efficiency, small air resistance and good assimilative capacity and is environment friendly; an impregnation liquid used in the invention overcomes the disadvantages of great brittleness, poor cohesiveness on the surface of fibers in the filter paper and the like of a filter paper adhesive film, exerts the effect of multistage filtration, compensates for the defect of large bore diameters of a part of bores among the fibers in the filter paper, improves uniformity of the bore diameters of bores among the fibers in the filter paper and enhances screening and filtering effects.

Description

Filter paper of filter of a kind of high filtering precision and preparation method thereof

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Technical field

The present invention relates generally to a kind of filter paper, relates in particular to filter paper of filter of a kind of high filtering precision and preparation method thereof.

Background technology

Engine has air, machine oil, three kinds of cleaners of fuel oil, generally is called " three filters ".They undertake respectively the filtration of engine aspirating system, lubricating system and combustion system medium.The filter paper of filter of traditional mode of production is large because of its filter paper aperture, lack of homogeneity, filter efficiency is low, the impurity harmful to engine can not be carried out to effective filtering, cause the engine premature wear, filter paper of filter with dipping emulsion now by pure dissolubility to water-soluble development, water-soluble dipping emulsion commonly used is as polyvinyl acetate copolymerization emulsion, benzene emulsion and pure acrylate series emulsion etc., wherein benzene emulsion is the most frequently used, but the filter paper glued membrane fragility after the benzene emulsion dipping is larger, caking property to fiber surface in filter paper is not good, and the function monomer consumption is large, cost is high, particularly deflection is high and can not in environment, degrade.

Summary of the invention

The object of the invention just is to provide filter paper of filter of a kind of high filtering precision and preparation method thereof.。

The present invention is achieved by the following technical solutions:

A kind of filter paper of filter of high filtering precision, it is comprised of the raw material of following weight parts:

Bamboo pulp 90-100, acetate fiber 12-15, mineral wool fiber 10-12, stearic acid 3-4, nano silicon 2-3, dolomite dust 2-3, micro-wax powder 5-6, nekal 1-2, triacetin 1-3, oxidized polyethlene wax 2-3, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.8-1, aminopropyl triethoxysilane 0.6-1, alumina powder 0.1-0.2, wet strength agent PAE 3-5, rosin 6-10, absolute ethyl alcohol 15-20, ethoxylated dodecyl alcohol 1-2, water are appropriate;

A kind of preparation method of filter paper of filter of high filtering precision comprises the following steps:

Bamboo pulp, acetate fiber, mineral wool fiber are added in pulper, first discongest 10-14 minute, making beating, vinyl three ('beta '-methoxy ethyoxyl) silane, nekal, the wet strength agent PAE that add slurry 1-2%, fully stir, add again nano silicon, dolomite dust, 600-700 rev/min of dispersed with stirring 2-3 minute, add each raw material of residue except rosin, absolute ethyl alcohol, micro-wax powder, ethoxylated dodecyl alcohol, be heated to 75-80 ℃, discongest, defibrination, adding water to solid content is 4-6%, by the paper machine moulding of manufacturing paper with pulp, dehydration; After rosin heating is melted, join in absolute ethyl alcohol dispersed with stirring, obtain dispersion liquid, micro-wax powder is joined in 10-20 times of water, add ethoxylated dodecyl alcohol, at 70-80 ℃ of lower stirring reaction 2-3 hour, be cooled to normal temperature, mix with above-mentioned dispersion liquid, add each raw material of residue, high speed 1500-2000 rev/min is disperseed 3-4 minute, filter discharging, obtain maceration extract; Paper after dehydration is dipped in above-mentioned maceration extract and floods 2-3h, then remove excessive maceration extract with pressure roll; At 160-200 ℃ of lower constant temperature drying, the spraying PEG400, the 1-2% that the consumption of described PEG400 is paper weight, dry to mass dryness fraction 95-98% under 120-130 ℃, and press polish arranges, and obtains the filter paper of filter of described high filtering precision.

Advantage of the present invention is:

The filter paper filtering precision that the present invention produces is high, filtering efficiency is high, and air drag is little, and water environment capacity is strong, environmental protection, maceration extract of the present invention, not only improved filter paper glued membrane fragility large, to the shortcoming such as the caking property of fiber surface in filter paper is not good, also played the effect of multistage filtering, make up the larger defect in part hole aperture between filter paper fibre, improved the uniformity in hole aperture between filter paper fibre, strengthened the sieving effect.

The specific embodiment

Embodiment 1

A kind of filter paper of filter of high filtering precision, it is comprised of the raw material of following weight parts (kilogram):

Bamboo pulp 100, acetate fiber 15, mineral wool fiber 12, stearic acid 4, nano silicon 3, dolomite dust 3, micro-wax powder 5, nekal 2, triacetin 1, oxidized polyethlene wax 3, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.8, aminopropyl triethoxysilane 1, alumina powder 0.2, wet strength agent PAE 3, rosin 10, absolute ethyl alcohol 20, ethoxylated dodecyl alcohol 2, water are appropriate;

A kind of preparation method of filter paper of filter of high filtering precision comprises the following steps:

Bamboo pulp, acetate fiber, mineral wool fiber are added in pulper, first discongest 14 minutes, making beating, vinyl three ('beta '-methoxy ethyoxyl) silane, nekal, the wet strength agent PAE that add slurry 1-2%, fully stir, add again nano silicon, dolomite dust, 700 rev/mins of dispersed with stirring 3 minutes, add each raw material of residue except rosin, absolute ethyl alcohol, micro-wax powder, ethoxylated dodecyl alcohol, be heated to 80 ℃, discongest, defibrination, adding water to solid content is 6%, by the paper machine moulding of manufacturing paper with pulp, dehydration; After rosin heating is melted, join in absolute ethyl alcohol dispersed with stirring, obtain dispersion liquid, micro-wax powder powder is entered in 20 times of water, add ethoxylated dodecyl alcohol, 80 ℃ of lower stirring reactions 3 hours, be cooled to normal temperature, mix with above-mentioned dispersion liquid, add each raw material of residue, 2000 rev/mins are disperseed 4 minutes at a high speed, filter discharging, obtain maceration extract; Paper after dehydration is dipped in above-mentioned maceration extract and floods 3h, then remove excessive maceration extract with pressure roll; At 200 ℃ of lower constant temperature dryings, the spraying PEG400, dry to mass dryness fraction 98% under 2%, 130 ℃ that the consumption of described PEG400 is paper weight, and press polish arranges, and obtains the filter paper of filter of described high filtering precision.

Performance test:

Bursting strength: 331Kpa;

Air permeability: 914L/m ² _.s；

Vapour lock: 0.81mbar.

Claims (2)

1. the filter paper of filter of a high filtering precision is characterized in that what it was comprised of the raw material of following weight parts:

Bamboo pulp 90-100, acetate fiber 12-15, mineral wool fiber 10-12, stearic acid 3-4, nano silicon 2-3, dolomite dust 2-3, micro-wax powder 5-6, nekal 1-2, triacetin 1-3, oxidized polyethlene wax 2-3, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.8-1, aminopropyl triethoxysilane 0.6-1, alumina powder 0.1-0.2, wet strength agent PAE 3-5, rosin 6-10, absolute ethyl alcohol 15-20, ethoxylated dodecyl alcohol 1-2, water are appropriate.

2. the preparation method of the filter paper of filter of a high filtering precision as claimed in claim 1 is characterized in that comprising the following steps:

Bamboo pulp, acetate fiber, mineral wool fiber are added in pulper, first discongest 10-14 minute, making beating, vinyl three ('beta '-methoxy ethyoxyl) silane, nekal, the wet strength agent PAE that add slurry 1-2%, fully stir, add again nano silicon, dolomite dust, 600-700 rev/min of dispersed with stirring 2-3 minute, add each raw material of residue except rosin, absolute ethyl alcohol, micro-wax powder, ethoxylated dodecyl alcohol, be heated to 75-80 ℃, discongest, defibrination, adding water to solid content is 4-6%, by the paper machine moulding of manufacturing paper with pulp, dehydration; After rosin heating is melted, join in absolute ethyl alcohol dispersed with stirring, obtain dispersion liquid, micro-wax powder is joined in 10-20 times of water, add ethoxylated dodecyl alcohol, at 70-80 ℃ of lower stirring reaction 2-3 hour, be cooled to normal temperature, mix with above-mentioned dispersion liquid, add each raw material of residue, high speed 1500-2000 rev/min is disperseed 3-4 minute, filter discharging, obtain maceration extract; Paper after dehydration is dipped in above-mentioned maceration extract and floods 2-3h, then remove excessive maceration extract with pressure roll; At 160-200 ℃ of lower constant temperature drying, the spraying PEG400, the 1-2% that the consumption of described PEG400 is paper weight, dry to mass dryness fraction 95-98% under 120-130 ℃, and press polish arranges, and obtains the filter paper of filter of described high filtering precision.