CN106087411A - A kind of modifying aramid fiber pulp and preparation method thereof and the brake block manufactured with it - Google Patents
A kind of modifying aramid fiber pulp and preparation method thereof and the brake block manufactured with it Download PDFInfo
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- CN106087411A CN106087411A CN201610393534.4A CN201610393534A CN106087411A CN 106087411 A CN106087411 A CN 106087411A CN 201610393534 A CN201610393534 A CN 201610393534A CN 106087411 A CN106087411 A CN 106087411A
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- aramid fiber
- fiber pulp
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- modifying aramid
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- 229920006231 aramid fiber Polymers 0.000 title claims abstract description 82
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 238000004880 explosion Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims description 31
- -1 glyoxaline ion Chemical class 0.000 claims description 30
- 239000002608 ionic liquid Substances 0.000 claims description 10
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 235000021197 fiber intake Nutrition 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims description 2
- PNGLEYLFMHGIQO-UHFFFAOYSA-M sodium;3-(n-ethyl-3-methoxyanilino)-2-hydroxypropane-1-sulfonate;dihydrate Chemical compound O.O.[Na+].[O-]S(=O)(=O)CC(O)CN(CC)C1=CC=CC(OC)=C1 PNGLEYLFMHGIQO-UHFFFAOYSA-M 0.000 claims description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 239000002783 friction material Substances 0.000 abstract description 10
- 239000010425 asbestos Substances 0.000 abstract description 5
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000012779 reinforcing material Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 11
- 229920002748 Basalt fiber Polymers 0.000 description 11
- 229920000049 Carbon (fiber) Polymers 0.000 description 11
- 229920000459 Nitrile rubber Polymers 0.000 description 11
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 11
- 239000004327 boric acid Substances 0.000 description 11
- 239000006229 carbon black Substances 0.000 description 11
- 239000004917 carbon fiber Substances 0.000 description 11
- OQRWAMBQGTYSRD-UHFFFAOYSA-N dipotassium;oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[K+].[K+].[Ti+4].[Ti+4].[Ti+4].[Ti+4] OQRWAMBQGTYSRD-UHFFFAOYSA-N 0.000 description 11
- 239000000395 magnesium oxide Substances 0.000 description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 11
- 229920001568 phenolic resin Polymers 0.000 description 11
- 239000005011 phenolic resin Substances 0.000 description 11
- 229910052761 rare earth metal Inorganic materials 0.000 description 11
- 150000002910 rare earth metals Chemical class 0.000 description 11
- 229910052624 sepiolite Inorganic materials 0.000 description 11
- 235000019355 sepiolite Nutrition 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 206010061592 cardiac fibrillation Diseases 0.000 description 8
- 230000002600 fibrillogenic effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004438 BET method Methods 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 206010020112 Hirsutism Diseases 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
- Paper (AREA)
Abstract
The invention provides a kind of modifying aramid fiber pulp, its average length is 5mm～8mm, and described modifying aramid fiber pulp is the modifying aramid fiber pulp containing glyoxaline ion liquid.Present invention also offers the preparation method of this modifying aramid fiber pulp, main by technical processs such as Steam explosion treatment, the process of glyoxaline ion liquid spray and fluidized bed counter jet mill dry method defibrinations, technological process is short, energy consumption is low, do not use solvent, environmental sound, prepared modifying aramid fiber pulp original fiber degree is high, its filoplume enriches, and specific surface area is big.The modifying aramid fiber pulp of the present invention makes in the friction materials such as brake block as reinforcing material, improves the intensity of brake block, toughness and thermostability, and prepares formula without asbestos, environmental protection.
Description
Technical field
The present invention relates to a kind of organic fiber and preparation field thereof, be specifically related to a kind of Fanglun slurry cake and preparation method thereof with
And the brake block manufactured with it.
Background technology
Brake block is the vitals being related to vehicle safe driving, along with auto industry and the further of transportation send out
Exhibition, people are the strictest to the performance requirement of brake block.Friction material is that brake block is critically important during manufacturing and using
Ingredient, it is desirable to it has and has enough and stable coefficient of frictions, and static and dynamic friction coefficient difference is little；There is good heat conductivity, resistance to
Abrasiveness, certain high temperature mechanical strength；Hardness is suitable, is difficult to abrade mating plate；Noiseless, low cost, environmentally safe
Deng.Traditional asbestos type brake block has been unsatisfactory for the requirement of modern automobile industry due to the carcinogenesis of asbestos, city of gradually fading out
?.20 century 70s, with steel fibre be mainly replace the semimetal friction material of material abroad by initially with, 80～90
At the beginning of age, semimetal friction material has occupied whole automobile disk-type braking sheet field, but semimetal friction material exists density
High, easily get rusty, brake noise is big and the defect such as damage antithesis, limit it and further develop.The friction material of Organic substance without asbestos
Material is to be succeeded in developing at first by Akebono company of Japan, and it uses pottery, mineral fibres or resistant to elevated temperatures organic fiber to substitute steel
Fiber, the shortcoming overcoming tradition semimetal friction material, is a kind of novel high-performing car brake friction material.At present,
This material be successfully applied on all multi-vehicle-types of European and American developed countries it is considered to be from now on friction material development main side
To.
Fanglun slurry cake obtains after aramid fiber is carried out surface fibrillation process, and in lint shape, its filoplume enriches,
Intensity is high, good stability of the dimension, and without fragility, high temperature resistant, corrosion-resistant, flexible, shrinkage factor are little, wearability good, surface area is big, energy
Well being combined with other material, the surface texture of its uniqueness drastically increases the grasping force of mixture, is therefore especially suitable for
It is applied in friction and sealed product as a kind of reinforcing fiber.Existing Fanglun slurry cake generally uses wet method slurrying, at defibrination
During, fiber easy fracture, the pulp average length of preparation is less than 3mm.Short pulp as reinforcing material, in brake block, is
Independent dispersion, in matrix, is wound around deficiency between pulp, cause brake block intensity and heat stability to increase limited, service life
Low.
Summary of the invention
The present invention is directed to existing Fanglun slurry cake be easily broken off in preparation process, the pulp average length of preparation is shorter, former
The problem that fibrillation degree is less, it is provided that a kind of modifying aramid fiber pulp and preparation method thereof, prepared Fanglun slurry cake average length
Length, specific surface area are big, and original fiber degree is higher；And be used for manufacturing brake block by this Fanglun slurry cake, drastically increase brake
The toughness of sheet, intensity and and heat stability, and extend the service life of brake block.
The technical solution used in the present invention is as follows:
A kind of modifying aramid fiber pulp, the average length of described modifying aramid fiber pulp is 5mm～8mm, and described modifying aramid fiber is starched
The dregs of rice are the modifying aramid fiber pulp containing glyoxaline ion liquid.
Preferably, described glyoxaline ion liquid includes alkyl imidazole ionic liquid.
It is highly preferred that the cation of described alkyl imidazole ionic liquid is to replace less than the alkyl of 4 carbon atoms
Imidazol ion, anion is halide ion, tetrafluoroborate ion or hexafluorophosphoricacid acid ions.
Present invention also offers the preparation method of a kind of modifying aramid fiber pulp, comprise the following steps:
(1) aramid fiber is carried out Steam explosion treatment, collect after explosion fiber and put into oven drying, obtaining steam quick-fried
Aramid fiber after Po；
(2) aramid fiber after above-mentioned explosion is processed with glyoxaline ion liquid spray；
(3), after being stirred evenly by above-mentioned aramid fiber after glyoxaline ion liquid processes, fluidized bed counter jet mill is put into
In loading hopper, use fluidized bed counter jet mill to carry out dry method slurrying, obtain the modifying aramid fiber pulp containing glyoxaline ion liquid.
In described step (1), aramid fiber is aramid short fiber, a length of 6mm～12mm.
In described step (1), the temperature of steam explosion is 180 DEG C～210 DEG C, and pressure is 1.5MPa～2.0MPa, during dimension pressure
Between 5-15min.
In described step (3), the feed rate of fluidized bed counter jet mill is 20kg/h～50kg/h, pulverizes pressure and is
0.8MPa, air-introduced machine air quantity is 8m3/min。
Described glyoxaline ion liquid consumption is the 2%～3% of aramid fiber consumption.
A kind of modifying aramid fiber pulp enhancement mode brake block, the modifying aramid fiber pulp obtained containing above-mentioned preparation method.
In the modifying aramid fiber pulp enhancement mode brake block of the present invention, described modifying aramid fiber pulp consumption is modifying aramid fiber pulp
The 5%～30% of the total consumption of enhancement mode brake block, more preferably 10%～20%.
Beneficial effects of the present invention:
The present invention passes through Steam explosion treatment, and glyoxaline ion liquid spray processes and fluidized bed counter jet mill dry method slurrying
Preparing modifying aramid fiber pulp Deng technological process, pulping process flow is short, and energy consumption is low, does not use solvent.Steam explosion treatment is by fibre
Dimension explosion is to after puffy, then carries out defibrination, pulverizing and fibrillation etc. in fluidized bed counter jet mill and process, imidazole-like ionic liquid
The addition of body further promotes the fibrillation of fiber, and prepared modifying aramid fiber pulp average length length, specific surface area are big, and
Original fiber degree is high.This modifying aramid fiber pulp is used in brake block, the network structure that the modifying aramid fiber pulp of fibrillation builds
Make more firmly to combine inside brake block, significantly improve the intensity of brake block friction material, toughness and thermostability, and
Extend the service life of brake block.It addition, preparation technology environmental protection of the present invention, without asbestos in formula for a product, to environment without
Pollute.
Accompanying drawing explanation
Fig. 1 is the apparent figure that modifying aramid fiber pulp A-1 amplifies 10 times
Fig. 2 is the microscope figure that modifying aramid fiber pulp A-1 amplifies 100 times (eyepiece 10X, object lens 10X)
Fig. 3 is the apparent figure that modifying aramid fiber pulp A-4 amplifies 10 times
Fig. 4 is the microscope figure that modifying aramid fiber pulp A-4 amplifies 100 times (eyepiece 10X, object lens 10X)
Specific embodiment
The most more specifically the present invention is illustrated.In following example, " part ", " consumption " are as without special
Different explanation is all quality criteria.
The preparation of modifying aramid fiber pulp (A), comprises the following steps:
(1) 100 parts of aramid fibers are added in steam explosion machine, are heated to 200 DEG C, under 2MPa pressure, maintain 10min,
Carrying out Steam explosion treatment, after collecting explosion, fiber putting in baking oven is dried, and obtains the aramid fiber after steam explosion；
(2) aramid fiber after above-mentioned explosion is sprayed with glyoxaline ion liquid；
(3), after being stirred evenly by above-mentioned aramid fiber after glyoxaline ion liquid processes, fluidized bed counter jet mill is put into
In loading hopper, add in fluidized bed counter jet mill with 30kg/h feed rate and carry out dry method slurrying, wherein the pulverizing pressure of airflow milling
Power is 0.8MPa, and air-introduced machine air quantity is 8m3/ min, prepares the modifying aramid fiber pulp containing glyoxaline ion liquid.
By modified fragrant by said method preparation to the aramid fiber of different length and the ionic liquid of different components and consumption
Synthetic fibre pulp, corresponding formula and data are listed in table 1 below, and modifying aramid fiber pulp A-1～A-7 represents, wherein Fanglun slurry cake A-4
Being to use the spray preparation of non-imidazole class ionic liquid, A-5 is without ionic liquid spray preparation, and A-6 is without steaming
Prepared by vapour explosion treatment, A-7 processes preparation without fluidized bed counter jet mill.Its property is tested by following method of testing
Energy parameter, test result is listed in the table below 2.The average fiber length of modifying aramid fiber pulp is according to " GB/T 29779-2013 paper pulp is fine
The mensuration non-polarized light method of dimension length " standard tests；Its specific surface area is according to " GB/T 19587-2004 gas absorption BET
Method measures solid matter specific surface area " standard tests；Its Canadian Standard Freeness is according to " GB/T 12660-2008 paper
Mensuration " Canadian standard " the freedom method of slurry water filtering performance " standard tests.
The formula of table 1 modifying aramid fiber pulp
The performance parameter of table 2 modifying aramid fiber pulp
| Average fiber length (mm) | Specific surface area (m<sup>2</sup>/g) | Canadian Standard Freeness (mL) | |
| A-1 | 5.12 | 7.52 | 265 |
| A-2 | 6.75 | 6.31 | 224 |
| A-3 | 7.86 | 5.85 | 205 |
| A-4 | 7.62 | 0.51 | 50 |
| A-5 | 3.52 | 0.20 | 32 |
| A-6 | 6.78 | 0.25 | 36 |
| A-7 | 11.05 | 0.11 | 20 |
The modifying aramid fiber pulp prepared by said method is used for preparing brake block, is embodied as formula as follows:
Embodiment 1
20 parts of phenolic resin, basalt fibre 5 parts, potassium titanate fibre 4 parts, 6 parts of carbon fiber, rare earth 4 parts, spray carbon black 7
Part, antimony trisulphide 3 parts, nitrile rubber 5 parts, boric acid 4 parts, 12 parts of diabase Ore, meerschaum 8 parts, magnesium oxide 7 parts, Yi Jigai
Property Fanglun slurry cake A-2 15 parts.
Comparative example 1A
20 parts of phenolic resin, basalt fibre 5 parts, potassium titanate fibre 4 parts, 6 parts of carbon fiber, rare earth 4 parts, spray carbon black 7
Part, antimony trisulphide 3 parts, nitrile rubber 5 parts, boric acid 4 parts, 12 parts of diabase Ore, meerschaum 8 parts, magnesium oxide 7 parts, aramid fiber is fine
Tieing up 15 parts, described aramid fiber average length is 7mm.
Comparative example 1B
20 parts of phenolic resin, basalt fibre 5 parts, potassium titanate fibre 4 parts, 6 parts of carbon fiber, rare earth 4 parts, spray carbon black 7
Part, antimony trisulphide 3 parts, nitrile rubber 5 parts, boric acid 4 parts, 12 parts of diabase Ore, meerschaum 8 parts, magnesium oxide 7 parts, Du Pont
1F538 Fanglun slurry cake 15 parts.
Comparative example 1C
20 parts of phenolic resin, basalt fibre 5 parts, potassium titanate fibre 4 parts, 6 parts of carbon fiber, rare earth 4 parts, spray carbon black 7
Part, antimony trisulphide 3 parts, nitrile rubber 5 parts, boric acid 4 parts, 12 parts of diabase Ore, meerschaum 8 parts, magnesium oxide 7 parts, Yi Jigai
Property Fanglun slurry cake A-4 15 parts.
Embodiment 2
25 parts of phenolic resin, basalt fibre 3 parts, potassium titanate fibre 6 parts, 7 parts of carbon fiber, rare earth 3 parts, spray carbon black 6
Part, antimony trisulphide 3 parts, nitrile rubber 6 parts, boric acid 2 parts, 16 parts of diabase Ore, meerschaum 10 parts, magnesium oxide 8 parts, Yi Jigai
Property Fanglun slurry cake A-1 5 parts.
Embodiment 3
25 parts of phenolic resin, basalt fibre 4 parts, potassium titanate fibre 7 parts, 6 parts of carbon fiber, rare earth 3 parts, spray carbon black 8
Part, antimony trisulphide 4 parts, nitrile rubber 4 parts, boric acid 3 parts, 10 parts of diabase Ore, meerschaum 10 parts, magnesium oxide 6 parts, Yi Jigai
Property Fanglun slurry cake A-3 10 parts.
Embodiment 4
15 parts of phenolic resin, basalt fibre 5 parts, potassium titanate fibre 5 parts, 5 parts of carbon fiber, rare earth 5 parts, spray carbon black 6
Part, antimony trisulphide 5 parts, nitrile rubber 3 parts, boric acid 5 parts, 8 parts of diabase Ore, meerschaum 8 parts, magnesium oxide 10 parts, Yi Jigai
Property Fanglun slurry cake A-1 20 parts.
Embodiment 5
15 parts of phenolic resin, basalt fibre 4 parts, potassium titanate fibre 4 parts, 4 parts of carbon fiber, rare earth 5 parts, spray carbon black 6
Part, antimony trisulphide 4 parts, nitrile rubber 3 parts, boric acid 5 parts, 10 parts of diabase Ore, meerschaum 6 parts, magnesium oxide 4 parts, Yi Jigai
Property Fanglun slurry cake A-3 30 parts.
Comparative example 5A
15 parts of phenolic resin, basalt fibre 4 parts, potassium titanate fibre 4 parts, 4 parts of carbon fiber, rare earth 5 parts, spray carbon black 6
Part, antimony trisulphide 4 parts, nitrile rubber 3 parts, boric acid 5 parts, 10 parts of diabase Ore, meerschaum 6 parts, magnesium oxide 4 parts, Yi Jigai
Property Fanglun slurry cake A-5 30 parts.
Comparative example 5B
15 parts of phenolic resin, basalt fibre 4 parts, potassium titanate fibre 4 parts, 4 parts of carbon fiber, rare earth 5 parts, spray carbon black 6
Part, antimony trisulphide 4 parts, nitrile rubber 3 parts, boric acid 5 parts, 10 parts of diabase Ore, meerschaum 6 parts, magnesium oxide 4 parts, Yi Jigai
Property Fanglun slurry cake A-6 30 parts.
Comparative example 5C
15 parts of phenolic resin, basalt fibre 4 parts, potassium titanate fibre 4 parts, 4 parts of carbon fiber, rare earth 5 parts, spray carbon black 6
Part, antimony trisulphide 4 parts, nitrile rubber 3 parts, boric acid 5 parts, 10 parts of diabase Ore, meerschaum 6 parts, magnesium oxide 4 parts, Yi Jigai
Property Fanglun slurry cake A-7 30 parts.
Above-mentioned each component formula is prepared brake block according to hot pressing formation process, then according to " GB 5763-2008 automobile is used
Brake facing " in method of testing test brake block properties, test result such as table 3 below.
The performance indications of table 3 brake block
Being not difficult to find out from the data of table 2, the embodiment of the present invention processes the modifying aramid fiber slurry of preparation through glyoxaline ion liquid
Dregs of rice average length is longer, and specific surface area and Canadian Standard Freeness are relatively big, as in Fig. 1, Fanglun slurry cake A-1 is more fluffy, in Fig. 2
There is more filoplume structure on Fanglun slurry cake A-1 surface, illustrates that the original fiber degree of the modifying aramid fiber pulp of the present invention is big.And aramid fiber
Specific surface area and the Canadian freeness of pulp A-4～A-7 are the least, as more smooth in the Fanglun slurry cake A-4 surface in Fig. 4.This
The modifying aramid fiber pulp being because the present invention is to process this three step through steam explosion, ionic liquid spray and fluidized bed counter jet mill
Technical process jointly acts on and being prepared from, and Steam explosion treatment can be by permissible to fiber explosion to puffy, fluidized bed counter jet mill
Fiber carrying out defibrination, pulverizing and fibrillation etc. process, the addition of glyoxaline ion liquid can promote the fibrillation of fiber, therefore energy
Prepare the modifying aramid fiber pulp that fibre length length, specific surface area and Canadian freeness are bigger.Prepared by these Fanglun slurry cakes
Brake block shear strength, impact strength, coefficient of thermal expansion, compression strain, coefficient of friction and wear rate all preferable, concrete data are shown in
Table 3.And Fanglun slurry cake A-5 is only after steam explosion and fluidized bed counter jet mill process, fragment into shorter fiber, its specific surface
Long-pending the least with Canadian freeness, this is because fiber surface can be infiltrated by glyoxaline ion liquid, weaken fiber table
The active force of face hydrogen bond, makes fiber surface be not easy radially and ruptures, it is easier to cracking produces fibrillation vertically.Fanglun slurry cake
A-6 and A-7 is to process without steam explosion and fluidized bed counter jet mill respectively, and the fibre length of preparation is longer, specific surface area and
Canadian freeness is less.The brake block prepared by Fanglun slurry cake A-5～A-7, such as comparative example 5A, 5B and 5C, shears strong
Degree and impact strength are relatively low, and coefficient of thermal expansion, compression strain and wear rate are relatively big, and concrete data are shown in Table 3.
From the data of table 3 it can also be seen that the shear strength of embodiment of the present invention brake block, impact strength, coefficient of thermal expansion,
Compression strain, coefficient of friction and wear rate are better than being not added with modifying aramid fiber pulp and adding other composition Fanglun slurry cakes or aramid fiber fibre
The brake block of dimension.Commercially available Du Pont 1F538 is added as comparative example 1A added in longer aramid fiber, comparative example 1B
Fanglun slurry cake, its shear strength and impact strength are relatively low, and compression strain and wear rate are very big, and the cutting of brake block in embodiment 1
Shearing stress and impact strength are the biggest, and coefficient of thermal expansion, compression strain and wear rate are relatively low.This is because that adds in the present invention changes
Property Fanglun slurry cake original fiber degree big, pulp surface hairiness is enriched, and winding and the grasping force of pulp are big so that pulp energy and powder body
Material is fully contacted, and is mutually wound network structure between pulp, each component is wrapped up, thus improves material
Intensity, and cancellated geometric distortion transitivity, greatly improve the toughness of material；It addition, modifying aramid fiber pulp carries
The glyoxaline ion liquid entered has the effect of excellent regulation frictional behaviour, improves the mar proof of brake block.
Claims (10)
1. a modifying aramid fiber pulp, it is characterised in that the average length of described modifying aramid fiber pulp is 5mm～8mm, described in change
Property Fanglun slurry cake is the modifying aramid fiber pulp containing glyoxaline ion liquid.
Modifying aramid fiber pulp the most according to claim 1, it is characterised in that described glyoxaline ion liquid includes alkyl miaow
Azole ionic liquid.
Modifying aramid fiber pulp the most according to claim 2, it is characterised in that the sun of described alkyl imidazole ionic liquid from
Son is less than the substituted imidazol ion of the alkyl of 4 carbon atoms.
Modifying aramid fiber pulp the most according to claim 2, it is characterised in that the moon of described alkyl imidazole ionic liquid from
Son is halide ion, tetrafluoroborate ion or hexafluorophosphoricacid acid ions.
5. the preparation method of a modifying aramid fiber pulp, it is characterised in that comprise the following steps:
(1) aramid fiber is carried out Steam explosion treatment, collect after explosion fiber and put into oven drying, after obtaining steam explosion
Aramid fiber；
(2) aramid fiber after above-mentioned explosion is processed with glyoxaline ion liquid spray；
(3), after being stirred evenly by above-mentioned aramid fiber after glyoxaline ion liquid processes, the charging of fluidized bed counter jet mill is put into
In bucket, use fluidized bed counter jet mill to carry out dry method slurrying, obtain the modifying aramid fiber pulp containing glyoxaline ion liquid.
The preparation method of modifying aramid fiber pulp the most according to claim 5, it is characterised in that described aramid fiber is aramid fiber
Chopped strand, a length of 6mm～12mm.
The preparation method of modifying aramid fiber pulp the most according to claim 6, it is characterised in that described glyoxaline ion liquid
Consumption is the 2%～3% of aramid fiber consumption.
8. a modifying aramid fiber pulp enhancement mode brake block, it is characterised in that containing changing according to any one of claim 1～4
Property Fanglun slurry cake.
Modifying aramid fiber pulp enhancement mode brake block the most according to claim 8, it is characterised in that described modifying aramid fiber pulp
Consumption is the 5%～30% of the modifying aramid fiber pulp total consumption of enhancement mode brake block.
Modifying aramid fiber pulp enhancement mode brake block the most according to claim 9, it is characterised in that described modifying aramid fiber is starched
Dregs of rice consumption is the 10%～20% of the modifying aramid fiber pulp total consumption of enhancement mode brake block.
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Cited By (1)
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| CN114437430A (en) * | 2022-02-28 | 2022-05-06 | 青岛科技大学 | High-wear-resistance rubber-based composite material and preparation method thereof |
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| CN106087411B (en) | 2018-06-12 |
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