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Thermosetting internal combustion engine filter paper and preparation method thereof

An internal combustion engine and thermosetting technology, which is applied in the field of pulp and paper making, can solve the problems of inability to meet the requirements of oil filter working for a long time, inability to coordinate filtration efficiency and dirt holding capacity, and high tightness of internal combustion engine filter paper. Good, light weight, good hydrophobicity

Pending Publication Date: 2022-07-01
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the common internal combustion engine filter paper is usually a paper filter layer made of ordinary wood pulp as the main component. This filter paper has the following disadvantages: on the one hand, due to the finer fibers of ordinary wood pulp, it has high Water absorption and swelling and aging lead to high tightness, poor water repellency, poor strength and poor temperature resistance. On the other hand, the fiber composition is single, and the relationship between filtration efficiency and dirt-holding capacity cannot be coordinated. It is difficult to increase its dirt-holding capacity on the premise of ensuring the filtration accuracy
In turn, it cannot meet the long-term working requirements of the oil filter

Method used

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  • Thermosetting internal combustion engine filter paper and preparation method thereof
  • Thermosetting internal combustion engine filter paper and preparation method thereof
  • Thermosetting internal combustion engine filter paper and preparation method thereof

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Embodiment 1

[0052] The present embodiment proposes a method for preparing a thermosetting internal combustion engine filter paper, the method comprising the following steps:

[0053] Step 1: Determine the ratio of fiber raw materials: Calculated by mass percentage, take 30%-100% of high-strength and high-modulus polyethylene fibers, 10%-70% of plant fibers, 5%-20% of aramid pulp, and 1% of polyvinyl alcohol fibers -5%, spare;

[0054] Step 2, beating of plant fiber: take the dry pulp of plant fiber and put it in a beating machine, add water to disperse it for 20min-30min, then beat with a light knife for 40min-60min, and stop beating when the fiber is completely dispersed without pulping point, to obtain plant fiber pulp The water in the slurry is thrown out, and the water is balanced for later use;

[0055] Step 3, pretreatment: pretreatment of high-strength and high-modulus polyethylene fibers;

[0056] Step 4, decompression of raw materials: mix the fiber raw materials obtained accor...

Embodiment 2

[0082] The present embodiment provides a preparation method of a thermosetting internal combustion engine filter paper, and the specific steps are as follows:

[0083] (1) beating of plant fiber: plant fiber selects softwood pulp fiber, and the beating degree is 22°SR;

[0084] (2) Determination of the ratio of fiber raw materials: the length of high-strength and high-modulus polyethylene fibers is selected as 6 mm, and calculated by mass percentage, 75% of high-strength and high-modulus polyethylene fibers, 18% of softwood pulp, 5% of aramid pulp, and polyvinyl alcohol fibers. 2% spare;

[0085] (3) Pretreatment: Wash the high-strength and high-modulus polyethylene fibers with ethanol, and clean them with deionized water, and set the weight of the lithium-ion battery separator paper to 135g / m2 2 , soak the cleaned fibers in water, adjust the fiber concentration to 0.78‰, add a low-foaming penetrant SF with 0.08% dry fiber mass for 12 hours, and then add a defoaming agent wit...

Embodiment 3

[0094] The present embodiment provides a preparation method of a thermosetting internal combustion engine filter paper, and the specific steps are as follows:

[0095] (1) Beating of plant fibers: the beating degree of softwood pulp fibers is 25°SR;

[0096] (2) Determination of the ratio of fiber raw materials: the length of high-strength and high-modulus polyethylene fibers is selected as 6mm, and calculated by mass percentage, the high-strength and high-modulus polyethylene fibers are 74%, softwood pulp 17%, aramid pulp 6%, and polyvinyl alcohol fiber. 3% spare;

[0097] (3) Pretreatment: Wash the high-strength and high-modulus polyethylene fibers with ethanol, and clean them with deionized water, and set the weight of the lithium-ion battery separator paper to 135g / m2 2 , soak the cleaned fibers in water, adjust the fiber concentration to 0.78‰, add low-foaming penetrant SF with 0.05% dry fiber mass for 12h, and then add 0.12% dry fiber mass defoaming agent Directly put ...

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Abstract

The invention discloses thermosetting internal combustion engine filter paper and a preparation method thereof, and belongs to the technical field of papermaking. The thermosetting internal combustion engine filter paper is prepared from high-strength and high-modulus polyethylene fibers, plant fibers, aramid pulp and polyvinyl alcohol fibers through wet papermaking. Wherein the mass ratio of each fiber component is as follows: 30%-100% of the high-strength and high-modulus polyethylene fiber, 0%-50% of the plant fiber, 5%-20% of the aramid pulp and 1%-5% of the polyvinyl alcohol fiber. The preparation process of the thermosetting internal combustion engine filter paper comprises the following steps: (1) determining the ratio of fiber raw materials; (2) pulping plant fibers; (3) pretreating; (4) defibering the raw materials; the thermosetting internal combustion engine filter paper prepared by the preparation method disclosed by the invention has good hydrophobicity, excellent corrosion resistance, uniform pore size and excellent mechanical strength.

Description

technical field [0001] The invention relates to a thermosetting internal combustion engine filter paper and a preparation method thereof, belonging to the technical field of pulp and paper making. Background technique [0002] Internal combustion engine filter paper is the key material of the engine filter system. It can filter dust, metal particles and carbon deposits in the fuel to ensure the cleanliness of the fuel, thereby reducing the wear between the engine's mechanical parts, cleaning the engine and extending its service life. Internal combustion engine filter paper is a filter paper that has high stiffness and strength after thermal curing after the base paper is impregnated with phenolic resin, and can withstand a certain pressure difference. With the continuous development of engine technology, the performance requirements of internal combustion engine filter paper have been continuously improved, especially with the continuous increase of the requirements for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H13/14D21H13/26D21H13/16D21H11/00D21H17/45D21H17/53D21H21/08D21F11/00D21H17/48
CPCD21H27/08D21H13/14D21H13/26D21H13/16D21H11/00D21H17/45D21H17/53D21H21/08D21F11/00D21H17/48
Inventor 龙柱马锐孙昌
Owner JIANGNAN UNIV
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