CN113969517A - Diesel oil filter paper and preparation method thereof - Google Patents
Diesel oil filter paper and preparation method thereof Download PDFInfo
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- CN113969517A CN113969517A CN202010716941.0A CN202010716941A CN113969517A CN 113969517 A CN113969517 A CN 113969517A CN 202010716941 A CN202010716941 A CN 202010716941A CN 113969517 A CN113969517 A CN 113969517A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/13—Silicon-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
- D21H17/26—Ethers thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
The invention relates to the technical field of filter materials, and discloses diesel filter paper which comprises filter paper base paper and a dipping solution for dipping the filter paper base paper, wherein the filter paper base paper comprises the following components in parts by weight: 50-70 parts of hardwood pulp, 15-20 parts of rice straw pulp, 15-25 parts of Chinese silvergrass pulp, 10-15 parts of carboxymethyl fiber, 20-30 parts of silica short fiber, 1-1.5 parts of silica gel powder and 0.5-1 part of zinc borate; the gum dipping solution comprises the following components in parts by weight: 40-50 parts of ethyl silicate, 5-10 parts of potassium permanganate, 30-40 parts of stearic acid modified solution and 80-120 parts of industrial methanol.
Description
Technical Field
The invention relates to the technical field of filter materials, in particular to diesel filter paper and a preparation method thereof.
Background
The engine oil filter paper is functional paper which has certain stiffness and strength and can bear certain pressure difference after base filter paper is subjected to resin impregnation and thermosetting treatment, the existing automobile diesel filter paper is mainly made of paper containing a high polymer coating, the performance and the service life of the diesel filter paper are determined by the properties of a high polymer material, and the base engine oil filter paper made of natural fiber raw materials is loose, low in tightness and low in inherent strength, is difficult to bear the impact of oil in a system, and cannot meet the performance requirement of a filter element in the using process. Furthermore, paper-made oil filter paper generally has poor curability, water resistance and oil resistance. For example, chinese patent grant publication no: CN102877368B, No. 10/29 in 2014 entitled "high temperature resistant flame retardant Filter paper for Diesel Filter" and its preparation method, which is prepared from the following raw materials in parts by weight: 60-70 parts of wood pulp fiber, 30-40 parts of vinylon fiber, 10-15 parts of glass fiber, 2-5 parts of dolomite powder, 1-3 parts of nano titanium dioxide, 2-4 parts of light calcium carbonate, 1-2 parts of modified nano carbon, 1-2 parts of nano titanium dioxide, 0.5-0.8 part of ammonium dihydrogen phosphate, 3-4 parts of modified water-soluble phenolic resin emulsion, 2-5 parts of styrene-acrylic emulsion, 0.5-1 part of diethanolamide, 0.4-0.8 part of silane coupling agent KH5500.5-1 part of sodium lauryl sulfate and 0.4-0.8 part of wet strength agent PAE4-6 part of the composite material. The diesel filter paper prepared by the invention has the disadvantages of looseness, low tightness, low inherent strength, difficult oil impact resistance in a system, and poor curing property, water resistance and oil resistance.
Disclosure of Invention
The invention provides the diesel filter paper with moderate tightness, high inherent strength, high bursting strength, high curing property, high water resistance and high oil resistance and the preparation method thereof, aiming at solving the defects that the diesel filter paper in the prior art is loose, low in tightness, low in inherent strength, difficult to bear the impact of oil in a system and poor in curing property, water resistance and oil resistance
In order to achieve the purpose, the invention adopts the following technical scheme:
a diesel filter paper comprises filter paper base paper and a dipping solution for dipping the filter paper base paper, wherein the filter paper base paper comprises the following components in parts by weight: 50-70 parts of hardwood pulp, 15-20 parts of rice straw pulp, 15-25 parts of Chinese silvergrass pulp, 10-15 parts of carboxymethyl fiber, 20-30 parts of silica short fiber, 1-1.5 parts of silica gel powder and 0.5-1 part of zinc borate; the gum dipping solution comprises the following components in parts by weight: 40-50 parts of ethyl silicate, 5-10 parts of potassium permanganate, 30-40 parts of stearic acid modified liquid and 80-120 parts of industrial methanol. The diesel oil filter paper prepared by the following preparation method by taking the raw materials in the above component ratio has the main performance index reaching 0.39g/cm tightness297 percent of filtering efficiency, 11000 kilometers of service life, less than 18 mu m of filtering precision, more than or equal to 354Kpa of burst strength and 12.4 KN.m of tensile strength.
Preferably, the tightness of the diesel filter paper is 0.3-0.5 g/cm2. The higher tightness ensures that the paper has good tear strength and tensile strength, ensures that the filter paper is not easy to damage and lose efficacy in the filtering work, but the tightness is too high and the filtering efficiency is easy to reduce.
Preferably, the filter paper base paper comprises 65 parts of hardwood pulp and 15 parts of straw pulp by weight; 20 parts of mango pulp; 10 parts of carboxymethyl fiber: 24 parts of silicon dioxide short fibers; 1.2 parts of silica gel powder; 0.5 part of zinc borate.
Preferably, the dipping solution comprises 45 parts of ethyl silicate, 8 parts of potassium permanganate, 30 parts of stearic acid modified solution and 100 parts of industrial methanol by weight.
Preferably, the diesel filter paper has a quantitative value of 180 +/-10 g/square meter. The appropriate basis weight is determined to balance the balance between strength, filtration effectiveness and rate, with too high a basis weight resulting in too thick a substrate and reduced filtration rate, and too low a basis weight resulting in less than desired strength and filtration effectiveness.
A preparation method of diesel filter paper comprises the following steps:
a) taking 50-70 parts of hardwood pulp, 15-20 parts of rice straw pulp, 15-25 parts of Chinese silvergrass pulp, 10-15 parts of carboxymethyl fiber and 20-30 parts of silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of finished pulp is 17 +/-2 ℃;
b) 1 to 1.5 parts of silica gel powder and 0.5 to 1 part of zinc borate are taken and placed in 5 to 8 parts of methanol for reaction, the reaction temperature is controlled to be 50 +/-5 ℃, the reaction time is controlled to be 5 to 8 hours, and the coupling agent is obtained,
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) taking 40-50 parts of ethyl silicate, 5-10 parts of potassium permanganate, 30-40 parts of stearic acid modified solution and 80-120 parts of industrial methanol, putting the materials into a reaction tank, fully stirring the materials for at least 2 hours at the temperature of 70-90 ℃, cooling the materials to room temperature, and filtering the materials by using 70-100 meshes of gauze to obtain target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) in the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of the intaglio screen surface;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
Preferably, the sizing amount in the step f) is controlled to be 18 +/-5%.
The diesel oil filter paper and the preparation method thereof have the following advantages: moderate tightness, high inherent strength, high bursting strength, curing property, water resistance and oil resistance, and convenient and safe use.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments.
Comparative example
A high-temperature-resistant flame-retardant filter paper for a diesel filter and a preparation method thereof are disclosed, wherein the filter paper is prepared from the following raw materials in parts by weight: 60-70 parts of wood pulp fiber, 30-40 parts of vinylon fiber, 10-15 parts of glass fiber, 2-5 parts of dolomite powder, 1-3 parts of nano titanium dioxide, 2-4 parts of light calcium carbonate, 1-2 parts of modified nano carbon, 1-2 parts of nano titanium dioxide, 0.5-0.8 part of ammonium dihydrogen phosphate, 3-4 parts of modified water-soluble phenolic resin emulsion, 2-5 parts of styrene-acrylic emulsion, 0.5-1 part of diethanolamide, 0.4-0.8 part of silane coupling agent KH5500.5-1 part of sodium lauryl sulfate and 0.4-0.8 part of wet strength agent PAE4-6 part of the composite material. The main performance index of the diesel filter paper can reach tightness of 0.29g/cm289% of filtering efficiency, 95000 km of service life, less than 25 μm of filtering precision, more than or equal to 294Kpa of burst strength and 10.7 KN.m of tensile strength.
Example 1
A diesel oil filter paper is prepared from the following components in parts by weight: 50 parts of hardwood pulp, 15 parts of rice straw pulp, 15 parts of Chinese silvergrass pulp, 10 parts of carboxymethyl fiber, 20 parts of silicon dioxide short fiber, 1 part of silica gel powder, 0.5 part of zinc borate, 40 parts of ethyl silicate, 5 parts of potassium permanganate, 30 parts of stearic acid modified liquid and 80 parts of industrial methanol. The target diesel oil filter paper is prepared according to the following steps:
a) taking hardwood pulp, straw pulp, mango pulp, carboxymethyl fiber and silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of the finished pulp is 15 ℃;
b) taking silica gel powder and zinc borate, placing the silica gel powder and the zinc borate into 5 parts of methanol for reaction, controlling the reaction temperature to be 50 +/-5 ℃ and the reaction time to be 5-8 hours, and obtaining the coupling agent;
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) putting ethyl silicate, potassium permanganate, stearic acid modified and industrial methanol into a reaction tank, fully stirring for at least 2 hours at the temperature of 70-90 ℃, cooling to room temperature, and filtering with 70-100 mesh gauze to obtain a target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) into the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of a gravure screen surface, wherein the gluing amount is controlled to be 13%;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
Example 2
A diesel oil filter paper is prepared from the following components in parts by weight: 60 parts of hardwood pulp, 18 parts of straw pulp, 20 parts of Chinese silvergrass pulp, 13 parts of carboxymethyl fiber, 25 parts of silicon dioxide short fiber, 1.2 parts of silica gel powder, 0.8 part of zinc borate, 45 parts of ethyl silicate, 7 parts of potassium permanganate, 35 parts of stearic acid modified liquid and 100 parts of industrial methanol. The target diesel oil filter paper is prepared according to the following steps:
a) taking hardwood pulp, straw pulp, mango pulp, carboxymethyl fiber and silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of the finished pulp is 17 ℃;
b) taking silica gel powder and zinc borate, placing the silica gel powder and the zinc borate into 5 parts of methanol for reaction, controlling the reaction temperature to be 50 +/-5 ℃ and the reaction time to be 5-8 hours, and obtaining the coupling agent;
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) putting ethyl silicate, potassium permanganate, stearic acid modified and industrial methanol into a reaction tank, fully stirring for at least 2 hours at the temperature of 70-90 ℃, cooling to room temperature, and filtering with 70-100 mesh gauze to obtain a target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) into the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of a gravure screen surface, wherein the gluing amount is controlled to be 18%;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
Example 3
A diesel oil filter paper is prepared from the following components in parts by weight: 65 parts of hardwood pulp, 20 parts of straw pulp, 15 parts of Chinese silvergrass pulp, 8 parts of carboxymethyl fiber, 24 parts of silicon dioxide short fiber, 1.2 parts of silica gel powder, 0.5 part of zinc borate, 45 parts of ethyl acetate, 8 parts of potassium permanganate, 30 parts of stearic acid modified liquid and 100 parts of industrial methanol. The target diesel oil filter paper is prepared according to the following steps:
a) taking hardwood pulp, straw pulp, mango pulp, carboxymethyl fiber and silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of the finished pulp is 17 ℃;
b) taking silica gel powder and zinc borate, placing the silica gel powder and the zinc borate into 5 parts of methanol for reaction, controlling the reaction temperature to be 50 +/-5 ℃ and the reaction time to be 5-8 hours, and obtaining the coupling agent;
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) putting ethyl silicate, potassium permanganate, stearic acid modified and industrial methanol into a reaction tank, fully stirring for at least 2 hours at the temperature of 70-90 ℃, cooling to room temperature, and filtering with 70-100 mesh gauze to obtain a target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) into the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of a gravure screen surface, wherein the gluing amount is controlled to be 18%;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
Example 4
A diesel oil filter paper is prepared from the following components in parts by weight: 70 parts of hardwood pulp, 20 parts of straw pulp, 25 parts of Chinese silvergrass pulp, 15 parts of carboxymethyl fiber, 30 parts of silicon dioxide short fiber, 1.5 parts of silica gel powder, 1 part of zinc borate, 50 parts of ethyl silicate, 10 parts of potassium permanganate, 40 parts of stearic acid modified liquid and 120 parts of industrial methanol. The target diesel oil filter paper is prepared according to the following steps:
a) taking hardwood pulp, straw pulp, mango pulp, carboxymethyl fiber and silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of the finished pulp is 19 ℃;
b) taking silica gel powder and zinc borate, placing the silica gel powder and the zinc borate into 5 parts of methanol for reaction, controlling the reaction temperature to be 50 +/-5 ℃ and the reaction time to be 5-8 hours, and obtaining the coupling agent;
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) putting ethyl silicate, potassium permanganate, stearic acid modified and industrial methanol into a reaction tank, fully stirring for at least 2 hours at the temperature of 70-90 ℃, cooling to room temperature, and filtering with 70-100 mesh gauze to obtain a target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) into the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of a gravure screen surface, wherein the gluing amount is controlled to be 23%;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
The performance of the engine oil filter paper prepared in the comparative example and examples 1 to 4 was measured, and the measurement results are shown in table 1. Tightness 0.39g/cm297 percent of filtering efficiency, 11000 kilometers of service life, less than 18 mu m of filtering precision, more than or equal to 354Kpa of burst strength and 12.4 KN.m of tensile strength.
Table 1.
| Unit of | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 | |
| Quantification of | g/㎡ | 187 | 173 | 182 | 185 | 192 |
| Tightness degree | g/cm2 | 0.29 | 0.35 | 0.37 | 0.39 | 0.43 |
| Efficiency of filtration | % | 89 | 96 | 97 | 97 | 97 |
| Service life | Kilometer is | 95000 | 11000 | 11000 | 11000 | 11000 |
| Filter fineness | μm | ＜25 | ＜18 | ＜18 | ＜18 | ＜18 |
| Burst strength | Kpa | 294 | 341 | 344 | 346 | 360 |
| Tensile strength | KN·m | 10.7 | 12.5 | 12.3 | 12.3 | 12.5 |
As can be seen from the contents in Table 1, the diesel filter paper obtained by the present invention has the advantages of moderate tightness, high inherent strength, burst resistance, and curability.
The raw materials and equipment used in the present invention are all the ones that are commonly used in the art unless otherwise specified, and the methods used in the present invention are all the ones that are conventional in the art unless otherwise specified.
The diesel filter paper and the preparation method thereof have the beneficial effects of moderate tightness, high inherent strength, high bursting strength, curing property, water resistance and oil resistance, and convenience and safety in use.
Claims (7)
1. The diesel filter paper is characterized by comprising filter paper base paper and a dipping solution for dipping the filter paper base paper, wherein the filter paper base paper comprises the following components in parts by weight:
50-70 parts of hardwood pulp;
15-20 parts of straw pulp;
15-25 parts of mango pulp;
10-15 parts of carboxymethyl fiber:
20-30 parts of silicon dioxide short fibers;
1-1.5 parts of silica gel powder;
0.5-1 part of zinc borate;
the gum dipping solution comprises the following components in parts by weight:
40-50 parts of ethyl silicate;
5-10 parts of potassium permanganate;
30-40 parts of stearic acid modified liquid;
80-120 parts of industrial methanol.
2. The oil filter paper according to claim 1, wherein the tightness of the oil filter paper is 0.3 to 0.5g/cm 2.
3. The engine oil filter paper as set forth in claim 1, wherein the filter paper base paper comprises 65 parts of hardwood pulp and 15 parts of straw pulp by weight; 20 parts of mango pulp; 10 parts of carboxymethyl fiber: 24 parts of silicon dioxide short fibers; 1.2 parts of silica gel powder; 0.5 part of zinc borate.
4. The engine oil filter paper as set forth in claim 1, wherein the dipping solution comprises 45 parts by weight of ethyl silicate, 8 parts by weight of potassium permanganate, 30 parts by weight of stearic acid modified solution, and 100 parts by weight of industrial methanol.
5. The engine oil filter paper according to claim 1 or 2, wherein the engine oil filter paper has a quantitative of 180 ± 10g per square meter.
6. A method for preparing the diesel filter paper as set forth in claims 1 to 5, which comprises the steps of:
a) taking 50-70 parts of hardwood pulp, 15-20 parts of rice straw pulp, 15-25 parts of Chinese silvergrass pulp, 10-15 parts of carboxymethyl fiber and 20-30 parts of silicon dioxide short fiber, pulping by a pulper, and pulping by a pulping machine, wherein the beating degree of finished pulp is 17 +/-2 ℃;
b) taking 1-1.5 parts of silica gel powder and 0.5-1 part of zinc borate, placing the silica gel powder and the zinc borate into 5-8 parts of methanol for reaction, controlling the reaction temperature to be 50 +/-5 ℃ and the reaction time to be 5-8 hours, and obtaining the coupling agent;
c) adding the coupling agent prepared in the step b) into the slurry prepared in the step a) for heating and mixing, and controlling the reaction temperature to be 60 +/-5 ℃ to obtain mixed slurry;
d) c), making the mixed slurry prepared in the step c) in an inclined wire paper machine or a flow measuring type round wire paper machine, and pressing and forming to obtain base paper of the filter paper;
e) taking 40-50 parts of ethyl silicate, 5-10 parts of potassium permanganate, 30-40 parts of stearic acid modified solution and 80-120 parts of industrial methanol, putting the materials into a reaction tank, fully stirring the materials for at least 2 hours at the temperature of 70-90 ℃, cooling the materials to room temperature, and filtering the materials by using 70-100 meshes of gauze to obtain target gum dipping solution;
f) dipping the filter paper base paper prepared in the step d) in the target dipping solution prepared in the step e), and gluing by adopting a roller coating mode of the intaglio screen surface;
g) drying and curing the impregnated base paper of the filter paper in the step e) in a drying cylinder at 140 ℃ to obtain the target diesel filter paper.
7. The method as claimed in claim 6, wherein the amount of sizing in step f) is controlled to be 18 ± 5%.
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| CN202010716941.0A CN113969517A (en) | 2020-07-23 | 2020-07-23 | Diesel oil filter paper and preparation method thereof |
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| CN (1) | CN113969517A (en) |
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| EP4223919A1 (en) * | 2022-02-04 | 2023-08-09 | Wepa Professional GmbH | Nonwoven fibrous material |
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