CN113802415A - Manufacturing process of engine oil filter paper - Google Patents
Manufacturing process of engine oil filter paper Download PDFInfo
- Publication number
- CN113802415A CN113802415A CN202110952256.2A CN202110952256A CN113802415A CN 113802415 A CN113802415 A CN 113802415A CN 202110952256 A CN202110952256 A CN 202110952256A CN 113802415 A CN113802415 A CN 113802415A
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- Prior art keywords
- pulp
- defibering
- oil filter
- filter paper
- engine oil
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 239000010705 motor oil Substances 0.000 title claims abstract description 26
- 239000000839 emulsion Substances 0.000 claims abstract description 27
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- ODLMAHJVESYWTB-UHFFFAOYSA-N propylbenzene Chemical compound CCCC1=CC=CC=C1 ODLMAHJVESYWTB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 10
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000005011 phenolic resin Substances 0.000 claims abstract description 9
- 238000003618 dip coating Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000004537 pulping Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 19
- 230000003020 moisturizing effect Effects 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 9
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- 238000005470 impregnation Methods 0.000 claims description 9
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 6
- 238000002791 soaking Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000005456 alcohol based solvent Substances 0.000 abstract description 3
- 230000009172 bursting Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 10
- 239000003921 oil Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000010721 machine oil Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000005018 Pinus echinata Nutrition 0.000 description 2
- 241001236219 Pinus echinata Species 0.000 description 2
- 235000017339 Pinus palustris Nutrition 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000005517 mercerization Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- 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
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/18—Highly hydrated, swollen or fibrillatable fibres
-
- 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
-
- 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
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/24—Polyesters
-
- 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
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- 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
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/48—Condensation polymers of aldehydes or ketones with phenols
-
- 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
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/52—Epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides a manufacturing process of engine oil filter paper, which comprises the following steps: feeding, pulping, defibering, papermaking, forming, primary drying, dip coating, secondary drying, scribing, softening, rolling, coiling, slitting and packaging, wherein the feeding step comprises the following raw material components in parts by weight: 30-40% of HPZ mercerized wood pulp, 30-40% of HFP-11 flash drying pulp and 30% of polyester fiber, so that the prepared engine oil filter paper can meet the requirements on various performances, has higher acid resistance, high temperature resistance, bursting resistance and high strength, and is prepared by the following steps of soaking and coating, wherein the soaking solution adopted in the soaking and coating step comprises the following components in percentage by weight: the production method comprises the following steps of preparing raw paper, namely, 40% of propyl benzene emulsion resin, 20-40% of water-emulsified epoxy resin and 20-40% of water-soluble phenolic resin, abandoning the addition of alcohol solvents, ensuring good production safety, enabling VOC detection to be close to zero, meeting increasingly harsh environmental protection requirements, not needing to add a recovery device, completing the production of the raw paper on a production line together with the processes of dip coating and the like, avoiding transfer, reducing the production cost and improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a process for manufacturing engine oil filter paper.
Background
The oil filter paper is a key material of the oil filter and is used for removing fine particles in oil.
Most of the conventional oil filter papers are made of pure plant fibers, for example, chinese patent CN103276630A discloses an air-machine filter paper which is made of softwood pulp, hardwood pulp and mercerized wood pulp, and has improved filtering performance, but does not have the characteristics of acid resistance and high temperature resistance.
Also there is the scheme of adding artificial fiber in order to improve the high temperature resistance of machine oil filter paper in the market, chinese patent CN104831586A just discloses a solidified machine oil filter paper for heavy load, adopt to add polylactic acid fiber in raw and other materials in order to strengthen the high temperature resistance of filter paper, but this filter paper still has the defect of not acidproof, and, this filter paper adopts methyl alcohol as the impregnant, need set up recovery unit and avoid methyl alcohol to spill over, otherwise be difficult to satisfy the environmental protection requirement, even set up recovery unit, also have great potential safety hazard, the dip coating can not set up a production line with body paper production, increased extra transportation, the equipment investment is big, low in production efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the process for manufacturing the engine oil filter paper, which has the advantages of low production cost, high production efficiency and good safety and can meet the environmental protection requirement.
In order to achieve the purpose, the invention provides the technical scheme that the engine oil filter paper manufacturing process comprises the following steps:
feeding, pulping, defibering, papermaking, forming, primary drying, dip coating, secondary drying, scribing, softening, rolling, coiling, slitting and packaging;
the weight ratio of each raw material component in the feeding step is as follows: 30-40% of HPZ mercerized wood pulp, 30-40% of HFP-11 flash dried pulp and 30% of polyester fiber;
the weight ratio of each component in the dipping solution adopted in the dipping and coating step is as follows: 40% of propyl benzene emulsion resin, 20-40% of water emulsion epoxy resin and 20-40% of water-soluble phenolic resin.
Preferably, a cross-linking agent and a coupling agent are added to the styrene-acrylic emulsion resin before the impregnation liquid is prepared.
Further preferably, the crosslinking agent comprises trimethylolpropane triacrylate, and the weight ratio of the crosslinking agent in the styrene-acrylic emulsion resin is 0.5-1%, and/or the coupling agent comprises a silane coupling agent, and the weight ratio of the coupling agent in the styrene-acrylic emulsion resin is 0.5-1%.
Preferably, the polyester fiber comprises the following components in parts by weight: 1.5D 5mm 50-100%, 0.5D 3mm 0-33.3%, 0.35D 3mm 0-16.7%.
Preferably, a step of finishing the fibers by a double-disc refiner is further arranged between the defibering step and the papermaking step.
Preferably, the concentration of the top wire in the papermaking step is less than one thousandth.
Preferably, the untwining step employs an untwining system comprising: fluffer, be used for to fluffer provides the thick liquid pipe of advancing of paper pulp, be used for to advance the moisturizing pipe of thick liquid pipe replenishment clear water, be provided with one-way check valve on the moisturizing pipe advance the interior paper pulp pressure of thick liquid pipe and be less than during the water pressure in the moisturizing pipe, clear water in the moisturizing pipe passes through one-way check valve flows in advance the thick liquid pipe advance the intraductal paper pulp pressure of thick liquid is higher than during the water pressure in the moisturizing pipe, advance the intraductal paper pulp of thick liquid can't pass through one-way check valve reverse inflow the moisturizing pipe.
Further preferably, the pressure at the pulp inlet of the defiberizer is 0.30-0.35MPa, the concentration at the pulp inlet of the defiberizer is 2-3%, and the absolute dry pulp passing amount of the defiberizer is 1000-1500 kg/h.
Further preferably, the fluffer comprises a first fluffer and a second fluffer, the pulp inlet of the first fluffer is connected with the pulp inlet pipe, the pulp inlet of the second fluffer is connected with the pulp outlet of the first fluffer through a connecting pipe, and the connecting pipe is also connected with the water replenishing pipe.
Further preferably, the fluffer is formed by connecting porous disc type high-frequency fluffers in series, the porous disc type high-frequency fluffer comprises a fluffing pump, a motor and a base, a fluffing disc is arranged in the fluffing pump, the fluffing disc is a circular flat plate, a plurality of through holes are formed in the fluffing disc, the fluffing disc comprises stator discs positioned at two sides and a rotor disc positioned in the middle, a gap of 1.0-1.3mm is formed between the stator disc and the rotor disc, the motor is used for driving the rotor disc to rotate, the base is used for supporting the fluffing pump and the motor, and when the rotor disc rotates, the rotor disc and the through holes in the stator disc are frequently staggered, so that slurry pumped from a slurry inlet of the fluffing pump flows in a roundabout manner and finally flows out from a slurry outlet of the fluffing pump.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention provides a manufacturing process of engine oil filter paper, which comprises the following steps: feeding, pulping, defibering, papermaking, forming, primary drying, dip coating, secondary drying, scribing, softening, rolling, coiling, slitting and packaging, wherein the feeding step comprises the following raw material components in parts by weight: 30-40% of HPZ mercerized wood pulp, 30-40% of HFP-11 flash drying pulp and 30% of polyester fiber, so that the prepared engine oil filter paper can meet the requirements on various performances, has higher acid resistance, high temperature resistance, bursting resistance and high strength, and is prepared by the following steps of soaking and coating, wherein the soaking solution adopted in the soaking and coating step comprises the following components in percentage by weight: 40% of propyl benzene emulsion resin, 20-40% of water emulsion epoxy resin and 20-40% of water-soluble phenolic resin, the addition of alcohol solvents is abandoned, the production safety is good, the VOC detection is close to zero, the increasingly harsh environmental protection requirements can be met, a recovery device is not required to be added, the production of base paper and the processes of dipping coating and the like can be completed on one production line without transferring, the production cost is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a schematic layout of the fluffing system of the present invention.
Fig. 3 is a front enlarged view of the fluffer of fig. 2.
Fig. 4 is a schematic left side view of the rotor disk of fig. 3.
Fig. 5 is a left side schematic view of the stator plate of fig. 4.
Wherein: 10. a fluffer; 11. a first fluffer; 12. a second fluffer; 20. a pulp inlet pipe; 30. a water replenishing pipe; 31. a one-way check valve; 32. a gate valve; 40. a connecting pipe; 50. a defibering pump; 51. a stator disc; 52. a rotor disk; 53. a through hole; 60. a motor; 70. a base.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.
The invention provides a manufacturing process of engine oil filter paper, which comprises the following steps:
feeding, pulping, defibering, papermaking, forming, primary drying, dip coating, secondary drying, scribing, softening, rolling, coiling, slitting and packaging.
The raw materials in the feeding step comprise HPZ mercerized wood pulp, HFP-11 flash dried pulp and polyester fiber, the HPZ mercerized wood pulp is prepared by adopting southern pine wood pulp of America through caustic soda mercerization, and the air permeability is high but the strength is poor; HFP-11 flash-dried pulp is prepared by adopting a high-speed rapid drying technology in the drying process of southern pine pulp of America, so that the fibers are bent and shaped, the air permeability is half of that of HPZ mercerized pulp, but the strength is good, the average diameter of the fibers is 30 micrometers, and the average length of the fibers is 3.3 mm; the terylene fiber has small diameter, acid resistance, high temperature resistance and high strength.
The advantage that sets up like this lies in, can enough make full use of the high characteristic of HPZ mercerized wood pulp air permeability, can utilize HFP-11 flash drying thick liquids's bending design effect to realize crisscross each other and colluding between the fibre and even form the fibre group that has certain intensity, simultaneously, the little polyester fiber of diameter wears wherein, the fibre group that can also make has better acidproofness, high temperature resistance, and have higher intensity, make the machine oil filter paper that finally makes have that the air permeability is good, the deflection is high, the bursting strength is high, high temperature resistant, the characteristic of acid resistance.
The weight ratio of each raw material component in the feeding step is as follows: 30-40% of HPZ mercerized wood pulp, 30-40% of HFP-11 flash dried pulp and 20-40% of polyester fiber.
The advantage that sets up like this lies in, can furthest balance the characteristics such as the air permeability of fibre group, intensity, high temperature resistant, acidproof for each item performance index (such as aperture, filter fineness, intensity, dust holding capacity, acidproof, high temperature resistant etc.) of the machine oil filter paper that finally makes all can satisfy the requirement.
The impregnation liquid adopted in the impregnation coating step comprises propyl benzene emulsion resin, water emulsion epoxy resin and water-soluble phenolic resin, wherein the propyl benzene emulsion resin also has a group which is crosslinked with cellulose, polyester fiber, epoxy resin and phenolic resin and is thermoplastic resin, the addition of the propyl benzene emulsion resin has the effect of improving the toughness of the engine oil filter paper, the water emulsion epoxy resin and the water-soluble phenolic resin belong to thermosetting resin, the addition of the water emulsion epoxy resin and the water-soluble phenolic resin has the effect of improving the stiffness, temperature resistance, oil resistance and aging resistance of the filter paper, and the epoxy resin can be smoothly cured at high temperature only under the condition that the propyl benzene emulsion resin, the water emulsion epoxy resin and the water-soluble phenolic resin are mixed for use.
The weight ratio of each component in the impregnation liquid is as follows: 20-40% of propyl benzene emulsion resin, 20-40% of water emulsion epoxy resin and 20-40% of water-soluble phenolic resin.
The engine oil filter paper has the advantages that the efficient curing of the water-emulsion epoxy resin at high temperature can be realized, the prepared engine oil filter paper can keep better indexes such as toughness, stiffness, temperature resistance, oil resistance and aging resistance, and can be matched with different weight proportions of raw material components in the feeding step to prepare a series of engine oil filter paper products with different quantification, different air permeability and different filtering precision.
Before the styrene-acrylic emulsion resin is used for preparing the impregnation liquid, a cross-linking agent and a coupling agent are also added, wherein the cross-linking agent is trimethylolpropane triacrylate, the weight percentage of the cross-linking agent in the styrene-acrylic emulsion resin is 0.5-1%, the coupling agent is a silane coupling agent, and the weight percentage of the coupling agent in the styrene-acrylic emulsion resin is 0.5-1%.
The advantages of the arrangement are that the linear plane groups in the impregnating solution can be mutually linked to form a three-dimensional structure, the strength is increased, the impregnating agent can have certain water resistance, and the influence on the original characteristics of the impregnating solution can be reduced to the greatest extent by controlling the addition amount.
The untwining step is performed using an untwining system as shown in fig. 2, the untwining system comprising: the defiberizing machine 10, the pulp inlet pipe 20 for providing pulp to the defiberizing machine 10, and the water replenishing pipe 30 for replenishing clear water to the pulp inlet pipe 20, wherein the water replenishing pipe 30 is provided with a one-way check valve 31, when the pressure of the pulp in the pulp inlet pipe 20 is lower than the water pressure in the water replenishing pipe 30, the clear water in the water replenishing pipe 30 flows into the pulp inlet pipe 20 through the one-way check valve 31, the pressure in the pulp inlet pipe 20 is increased, the pressure at the pulp inlet of the defiberizing machine 10 can be kept at 0.30-0.35MPa, then the concentration at the pulp inlet of the defiberizing machine 10 is kept at 2-3%, the absolute dry pulp quantity passing through the defiberizing machine 10 is kept at 1000-, the pulp in the pulp inlet pipe 20 can not reversely flow into the water replenishing pipe 30 through the one-way check valve 31, that is, when the pressure of the pulp in the pulp inlet pipe 20 is higher than or equal to the water pressure in the water replenishing pipe 30, the water replenishing pipe 30 and the pulp inlet pipe 20 are actually in a mutually isolated disconnected state, so that the automatic control of the connection and disconnection between the water replenishing pipe 30 and the pulp inlet pipe 20 is realized.
In order to further improve the defibering effect, the defibering machine 10 comprises two multi-hole disc type high-frequency defibering machines, namely a first defibering machine 11 and a second defibering machine 12, wherein a pulp inlet of the first defibering machine 11 is connected with a pulp inlet pipe 20, a pulp inlet of the second defibering machine 12 is connected with a pulp outlet of the first defibering machine 11 through a connecting pipe 40, and a water replenishing pipe 30 is also connected to the connecting pipe 40 for facilitating control.
The first fluffer 11 and the second fluffer 12 have substantially the same structure, and the first fluffer 11 is described as an example below, the first fluffer 11 includes a fluffing pump 50, a motor 60, and a base 70, a fluffing disc is arranged in the fluffing pump 50, the fluffing disc is a circular flat plate, a plurality of through holes 53 are formed on the fluffing disc, the fluffing disc includes stator discs 51 located at both sides and a rotor disc 52 located at the middle, a gap between the stator discs 51 and the rotor disc 52 is very important, the gap is too large, the fluffing efficiency is low, the gap is too small, the rotor disc 52 and the stator discs 51 are easily worn, and, since the first fluffer 11 and the second fluffer 12 are connected in series, in order to enable the second fluffer 12 to play a better fluffing role, the gap between the stator disc and the rotor disc in the first fluffer 11 is inevitably larger than the gap between the stator disc and the rotor disc in the second fluffer 12, preferably, the clearance between the stator disc and the rotor disc in the first fluffer 11 is 1.2-1.3mm, the clearance between the stator disc and the rotor disc in the second fluffer 12 is 1.0-1.15mm, the motor 60 is used for driving the rotor disc 52 to rotate, the base 70 is used for supporting the fluffing pump 50 and the motor 60, and when the rotor disc 52 rotates, the rotor disc 52 and the through holes 53 on the stator disc 51 are frequently staggered, so that the pulp pumped from the pulp inlet of the fluffing pump 51 flows in a roundabout manner, and finally flows out from the pulp outlet of the fluffing pump 51, and the fluffing function is realized.
A step of finishing the fibers by a double-disc refiner is also arranged between the defibering step and the papermaking step, and the double-disc refiner does not press a knife when the fibers are finished.
The manufacturing step adopts the inclined net forming technology, and the concentration of the upper net is less than one thousandth, so that the paper making device has the advantages of good uniformity of the manufactured paper and uniform pore size distribution in the paper.
The advantages and features of the present invention are further illustrated by the performance of two prepared oil filter papers.
The manufacturing process of the engine oil filter paper provided by the invention has the following advantages:
1. the prepared engine oil filter paper can meet the requirements on various properties and has higher acid resistance, high temperature resistance, breakage resistance and high strength.
2. The defibering system is used for defibering, so that the cutting of fibers in the paper pulp can be reduced to the maximum extent, and the fibers in the paper pulp can be well dispersed into single fibers.
3. The special impregnation liquid is adopted for impregnation coating, the addition of alcohol solvents is abandoned, the production safety is good, the VOC detection is close to zero, the more and more harsh environmental protection requirements can be met, in addition, a recovery device is not required to be added, the production of the base paper can be completed on a production line with the procedures of impregnation coating and the like, the transfer is not required, the production cost is reduced, and meanwhile, the production efficiency is improved.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A process for manufacturing engine oil filter paper comprises the following steps:
feeding, pulping, defibering, papermaking, forming, primary drying, dip coating, secondary drying, scribing, softening, rolling, coiling, slitting and packaging;
the method is characterized in that:
the weight ratio of each raw material component in the feeding step is as follows: 30-40% of HPZ mercerized wood pulp, 30-40% of HFP-11 flash dried pulp and 20-40% of polyester fiber;
the weight ratio of each component in the dipping solution adopted in the dipping and coating step is as follows: 20-40% of propyl benzene emulsion resin, 20-40% of water emulsion epoxy resin and 20-40% of water-soluble phenolic resin.
2. The engine oil filter paper manufacturing process according to claim 1, characterized in that: before the impregnation liquid is prepared, a crosslinking agent and a coupling agent are added into the styrene-acrylic emulsion resin.
3. The engine oil filter paper manufacturing process according to claim 2, characterized in that: the crosslinking agent comprises trimethylolpropane triacrylate, the weight ratio of the crosslinking agent in the styrene-acrylic emulsion resin is 0.5-1%, and/or the coupling agent comprises a silane coupling agent, and the weight ratio of the coupling agent in the styrene-acrylic emulsion resin is 0.5-1%.
4. The engine oil filter paper manufacturing process according to claim 1, characterized in that: the polyester fiber comprises the following components in parts by weight: 1.5D 5mm 50-100%, 0.5D 3mm 0-33.3%, 0.35D 3mm 0-16.7%.
5. The engine oil filter paper manufacturing process according to claim 1, characterized in that: and a step of finishing fibers by a double-disc refiner is also arranged between the defibering step and the papermaking step.
6. The engine oil filter paper manufacturing process according to claim 1, characterized in that: and the online concentration in the papermaking step is less than one thousandth.
7. The engine oil filter paper manufacturing process according to claim 1, characterized in that: the untwining system adopted in the untwining step comprises: fluffer, be used for to fluffer provides the thick liquid pipe of advancing of paper pulp, be used for to advance the moisturizing pipe of thick liquid pipe replenishment clear water, be provided with one-way check valve on the moisturizing pipe advance the interior paper pulp pressure of thick liquid pipe and be less than during the water pressure in the moisturizing pipe, clear water in the moisturizing pipe passes through one-way check valve flows in advance the thick liquid pipe advance the intraductal paper pulp pressure of thick liquid is higher than during the water pressure in the moisturizing pipe, advance the intraductal paper pulp of thick liquid can't pass through one-way check valve reverse inflow the moisturizing pipe.
8. The engine oil filter paper manufacturing process according to claim 7, characterized in that: the pressure at the pulp inlet of the defiberizer is 0.30-0.35MPa, the concentration at the pulp inlet of the defiberizer is 2-3%, and the absolute dry pulp passing amount of the defiberizer is 1000-1500 kg/h.
9. The engine oil filter paper manufacturing process according to claim 7, characterized in that: the fluffer comprises a first fluffer and a second fluffer, the pulp inlet of the first fluffer is connected with the pulp inlet pipe, the pulp inlet of the second fluffer is connected with the pulp outlet of the first fluffer through a connecting pipe, and the connecting pipe is also connected with the water replenishing pipe.
10. The engine oil filter paper making process according to claim 9, characterized in that: the defibering machine is formed by connecting porous disc type high-frequency defibering machines in series, the porous disc type high-frequency defibering machine comprises a defibering pump, a motor and a base, a defibering disc is arranged in the defibering pump and is a circular flat plate, a plurality of through holes are formed in the defibering disc, the defibering disc comprises stator discs located on two sides and a rotor disc located in the middle, a gap of 1.0-1.3mm is formed between the stator discs and the rotor disc, the motor is used for driving the rotor disc to rotate, the base is used for supporting the defibering pump and the motor, and when the rotor disc rotates, the rotor disc and the through holes in the stator disc are frequently staggered, so that slurry pumped from a slurry inlet of the defibering pump flows in a circuitous manner, and finally flows out from a slurry outlet of the defibering pump.
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| CN114855500A (en) * | 2022-04-15 | 2022-08-05 | 山东仁丰特种材料股份有限公司 | Environment-friendly curing-free engine oil filtering material and preparation method thereof |
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Application publication date: 20211217 |