CN109024055A - A kind of preparation method of high-wearing feature paper friction material - Google Patents
A kind of preparation method of high-wearing feature paper friction material Download PDFInfo
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- CN109024055A CN109024055A CN201810941675.4A CN201810941675A CN109024055A CN 109024055 A CN109024055 A CN 109024055A CN 201810941675 A CN201810941675 A CN 201810941675A CN 109024055 A CN109024055 A CN 109024055A
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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
- 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
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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
- 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
- D21H11/20—Chemically or biochemically modified fibres
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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
- 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
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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
- 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
- D21H17/675—Oxides, hydroxides or carbonates
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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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The present invention relates to a kind of preparation methods of high-wearing feature paper friction material, belong to paper friction material preparation technical field.The present invention mixes bamboo fibre with ferrous sulfate solution, desciccate is made in filtration drying, desciccate is reacted again to obtain filter residue with copper-bath, filter residue is mixed with ethyl orthosilicate and carries out microwave heating, modified bamboo fiber is made, bamboo fibre is mixed with ferrous ion in the present invention, modified bamboo fibre surface mechanical properties are improved using the excellent mechanical performance of metal simple-substance itself, the hole in bamboo fibre is filled simultaneously, improve its compactness, improve bamboo fibre micro-tubular structure tightness degree, make the toughness of bamboo fibre, mechanical property is further enhanced, the present invention forms silica coating on bamboo fibre surface, make iron, copper is protected, Si-O key very big with bond energy in film layer simultaneously, improve the intensity of paper friction material, it has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation methods of high-wearing feature paper friction material, belong to paper friction material technology of preparing
Field.
Background technique
In recent years, with the rapid development of automobile industry and aircraft industry, the research of friction material field is also had occurred
Growth rapidly.Friction material applies frictional force transmitting torque and braking during the work time, be ensure automobile balance operation and
The important materials of security performance.Within a very long time in past, be most commonly applied to friction material in industry mainly with metal,
Based on the conventional friction materials such as ceramics and cement material.But the requirement with industry to friction material comprehensive performance more gradually mentions
Height, the deficiency (high temperature thermal decomposition of such as semimetal friction material or the expensive cost of carbon friction material) in its own performance
Range is restricted its application, new-type friction material gradually replaces conventional friction material by more manufacturers, processing enterprise
Favor.
Paper friction material as a kind of important Wet-type friction material, will be increased using paper-making pulping and the technique manufactured paper with pulp
Precast body, then the friction material formed by impregnating resin, hot-press solidifying is made in strong fiber, frictional property regulator, filler.Paper
Base frication material is low with production cost, the steady fixed and moving/confficient of static friction ratio of dynamic friction coefficient is close, coating performance is steady, abrasion
The advantages that rate is low, long service life gradually substitutes resin-matrix friction material and metal base frication material, more and more
Applied to fields such as aerospace, automobile, petrochemical industry, mechano-electronic and health cares.
In paper friction material reinforcing fiber and binder, selectable reinforcing fiber and binder type are more,
But their heat resistance, flexibility, physical and mechanical property, frictionand wear properties differ greatly, using different reinforcing fibers
It will lead to difference of the paper friction material on friction and wear behavior and physics/mechanical property with binder.Common paper base rubs
Wiping material is aramid fiber material, and addition aramid fiber can improve the frictional behaviour of friction material, but aramid fiber is resistance to
It is hot poor, so that its application in heavy load machinery is received certain restrictions.And aramid fiber surface inertia, crystallization degree
Height, it is bad in conjunction with matrix, affect the performance of the composite material of aramid fiber.Carbon fiber and bamboo fibre surface are changed with rare earth
Property, improves the wearability and heat resistance of fiber, but the combination of rare earth and fiber and insecure, easily separated after friction, causes
The change of frictional behaviour.It also needs to be improved the heat resistance of friction material, friction stability, ageing resistance, antibiotic property, toughness, prevent
Other performances such as static behaviour, wearability, anti-slip, compactness, thermal conductivity.It is rubbed using the paper base that carbon fiber is prepared as reinforcing fiber
Excellent material performance is wiped, can satisfy the particular/special requirement of wet friction operating condition, but the structure of carbon fiber is significant with one
Defect, surface inertness is big, surface energy is low, lacks active functional group, interface bond strength poor with the wellability of resin matrix
Weak, interface haves the defects that more, this greatly limits application of the carbon fiber in Wet-type friction material.
The frictional behaviour of existing paper friction material is influenced by external load, and variation is big, and resistance to decline long afterwards is big, Bu Nengman
Requirement of the foot for the middle elastic conical drogue friction material transmitting torque of self-adapting automatic gear shift device.How paper friction material is improved
Coefficient of friction, friction stability, heat resistance and wearability be still main problem that current paper friction material faces.
Summary of the invention
The technical problems to be solved by the invention: it is poor for current paper friction material mechanical property and wear-resisting property, make
The defect of the friction stability decline of paper friction material, provides a kind of preparation method of high-wearing feature paper friction material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of preparation method of high-wearing feature paper friction material, it is characterised in that specific preparation step are as follows:
(1) according to parts by weight, 3~5 parts of bamboo fibres, 20~25 parts of propylene glycol, 0.5~0.8 part of lemon granulates, 7~8 are weighed
In part ferrous sulfate solution investment beaker, is stirred with blender, filter cake is obtained by filtration after the completion of stirring, wash with distilled water filter cake
It is placed in oven and dried after 3~5 times, obtains desciccate；
(2) above-mentioned desciccate is impregnated in conical flask with distilled water, desciccate quality 30~40% is added dropwise into conical flask
Copper-bath, conical flask is placed in sonic oscillation instrument and is vibrated, filter residue is obtained by filtration after oscillation, wash with distilled water
Filter residue 3~5 times；
(3) ethanol solution of above-mentioned filter residue and ethyl orthosilicate 1:5 in mass ratio is put into beaker, places the beaker micro-wave oven
Modified filter residue is obtained by filtration in middle microwave heating after microwave heating, modified filter residue 3~5 times with washes of absolute alcohol, in parts by weight
Meter weighs 7~9 parts of modified filter residues, 16~18 parts of ammonium hydroxide, 2~4 parts of ethylene glycol and 3~5 parts of 1,4-butanediol investment single-necked flasks
In, single-necked flask is placed in sonic oscillation in sonic oscillation instrument, reaction solid is obtained by filtration after oscillation, successively with dehydrated alcohol and
Distilled water is put into dry obtained modified bamboo fiber in blast drier after cleaning 3~5 times；
(4) according to parts by weight, 7~9 parts of above-mentioned modified bamboo fiber, 2.0~2.5 parts of silicon carbide powders, 1.0~1.3 parts are weighed
Magnetic agitation in mullite fiber and 30~32 parts of distilled water investment beakers, is made mixing suspension；
(5) above-mentioned mixing suspension is poured into sheet forming apparatus, prefabricated paper embryo is made, prefabricated paper embryo is put into vacuum oven
Dry paper embryo is made in middle drying, and phenol resin solution is painted on dry paper embryo, brushes 3~5 times repeatedly, in room temperature after having brushed
In dry, dry be placed in vulcanizer vulcanize be made high-wearing feature paper friction material.
The mass fraction of ferrous sulfate solution as described in step (1) is 5~8%, and the revolving speed of blender is 300~350r/
Min, mixing time are 3~4h, and drying time is 100~120min in baking oven.
The mass fraction of copper-bath described in step (2) is 10~15%, and the supersonic frequency in sonic oscillation instrument is
40~45kHz, duration of oscillation are 3~4h.
The mass fraction of the ethanol solution of ethyl orthosilicate described in step (3) is 10~15%, the power in micro-wave oven
For 230~250W, microwave heating time is 15~20min, and the mass fraction of ammonium hydroxide is 20~25%, the frequency in sonic oscillation instrument
Rate is 35~40kHz, and the sonic oscillation time is 3~5h, and the temperature in blast drier is 80~85 DEG C, drying time is 5~
6h。
Magnetic agitation rotating speed described in step (4) is 1200~1400r/min, and the magnetic agitation time is 50~70min.
Temperature in vacuum oven described in step (5) is 90~95 DEG C, and vacuum degree is 100~120Pa, when dry
Between be 4~5h, the temperature in vulcanizer is 160~170 DEG C, and pressure is 7~8MPa, and vulcanization time is 15~20min.
The method have the benefit that:
(1) present invention first mixes bamboo fibre with ferrous sulfate solution, and desciccate is made in filtration drying after mixing, then will do
Dry product and copper-bath hybrid reaction, are obtained by filtration filter residue after reaction, filter residue are mixed and carried out micro- with ethyl orthosilicate
Wave heating is added ammonium hydroxide after heating and other organic solvents is reacted, and filters after reaction and modified bamboo fiber is made, in the present invention
Bamboo fibre is mixed with ferrous ion, is adsorbed in ferrous ion on bamboo fibre and bamboo fibre using ionic bond and chelation
Guan Zhong is added copper ion and generates same order elements to part ferrous ion, ferrous ion is precipitated from plant fiber, passes through microwave
Heating pyroreaction makes metal ion be reduced into nano metal simple substance, makes to be modified using the excellent mechanical performance of metal simple-substance itself
Bamboo fibre surface mechanical properties be improved, while filling the hole in bamboo fibre, improve its compactness, metal ion with
And it is micro- to improve bamboo fibre by other molecules around ionic bond, chelation and the absorption of other Chemical bondings for metal simple-substance
Pipe close structure degree, makes the toughness of bamboo fibre, mechanical property be further enhanced；
(2) bamboo fibre for introducing metal is mixed in the present invention with ethyl orthosilicate, ammonia, organic solvent and bamboo is added after mixing
Fiber is reacted, and bamboo fibre surface is made to form silica coating, and silica coating coats bamboo fibre, metal ion and receives
Rice metal simple-substance, protects iron, copper, prevents from being corroded by air, acid, alkali and other materials, keeps metal ion
With the activity of simple substance, while making film layer that there is good mechanical property with the very big Si-O key of bond energy in film layer, enhancing bamboo
Toughness, wearability and the impact resistance of fiber have broad application prospects to improve the intensity of paper friction material.
Specific embodiment
According to parts by weight, weigh 3~5 parts of bamboo fibres, 20~25 parts of propylene glycol, 0.5~0.8 part of lemon granulates, 7~
The ferrous sulfate solution that 8 parts of mass fractions are 5~8% is put into beaker, is mixed with blender with the revolving speed of 300~350r/min
3~4h is stirred, filter cake is obtained by filtration after the completion of stirring, it is placed in oven and dried 100 after filter cake 3~5 times wash with distilled water~
120min obtains desciccate；Above-mentioned desciccate is impregnated in conical flask with distilled water, dry produce is added dropwise into conical flask
The copper-bath that the mass fraction of amount of substance 30~40% is 10~15%, conical flask is placed in sonic oscillation instrument, in ultrasound
Frequency vibrates 3~4h under conditions of being 40~45kHz, filter residue is obtained by filtration after oscillation, wash with distilled water filter residue 3~5
It is secondary；Above-mentioned filter residue and mass fraction are put into beaker for the ethanol solution 1:5 in mass ratio of 10~15% ethyl orthosilicate,
It places the beaker in micro-wave oven, 15~20min of microwave heating under the power of 230~250W is obtained by filtration after microwave heating and changes
Property filter residue with the modified filter residue of washes of absolute alcohol 3~5 times according to parts by weight, weigh 7~9 parts of modified filter residues, 16~18 parts
Ammonium hydroxide, 2~4 parts of ethylene glycol and 3~5 parts of 1,4-butanediol that mass fraction is 20~25% are put into single-necked flask, and single port is burnt
Bottle is placed in sonic oscillation instrument, and reaction solid is obtained by filtration after 3~5h of sonic oscillation under conditions of frequency is 35~40kHz,
It is put into blast drier after successively cleaning 3~5 times with dehydrated alcohol and distilled water, it is dry under conditions of temperature is 80~85 DEG C
Modified bamboo fiber is made in dry 5~6h；According to parts by weight, 7~9 parts of above-mentioned modified bamboo fiber, 2.0~2.5 parts of silicon carbide are weighed
It is 1200~1400r/min's in revolving speed in powder, 1.0~1.3 parts of mullite fibers and 30~32 parts of distilled water investment beakers
Under the conditions of carry out 50~70min of magnetic agitation, be made mixing suspension；Above-mentioned mixing suspension is poured into sheet forming apparatus,
Prefabricated paper embryo is made, prefabricated paper embryo is put into vacuum oven, temperature is 90~95 DEG C, vacuum degree is 100~120Pa's
Under the conditions of dry 4~5h, dry paper embryo is made, phenol resin solution is painted on dry paper embryo, brushes 3~5 times repeatedly, brush
It is dried in room temperature after complete, dries and be placed in vulcanizer, under conditions of temperature is 160~170 DEG C, pressure is 7~8MPa
Vulcanize 15~20min and high-wearing feature paper friction material is made.
According to parts by weight, weighing 3 parts of bamboo fibres, 20 parts of propylene glycol, 0.5 part of lemon granulates, 7 parts of mass fractions is 5%
Ferrous sulfate solution investment beaker in, 3h is mixed with the revolving speed of 300r/min with blender, is filtered after the completion of stirring
To filter cake, 100min is placed in oven and dried after filter cake 3 times wash with distilled water, obtains desciccate；By above-mentioned desciccate
It is impregnated in conical flask with distilled water, the copper sulphate that the mass fraction that desciccate quality 30% is added dropwise into conical flask is 10% is molten
Conical flask is placed in sonic oscillation instrument by liquid, is vibrated 3h under conditions of supersonic frequency is 40kHz, is filtered after oscillation
To filter residue, wash with distilled water filter residue 3 times；Ethanol solution by above-mentioned filter residue with mass fraction for 10% ethyl orthosilicate is pressed
Mass ratio 1:5 is put into beaker, is placed the beaker in micro-wave oven, the microwave heating 15min under the power of 230W, after microwave heating
Modified filter residue is obtained by filtration, modified filter residue 3 times with washes of absolute alcohol, according to parts by weight, weighs 7 parts of modified filter residues, 16 parts
Ammonium hydroxide, 2 parts of ethylene glycol and the 3 parts of 1,4-butanediol that mass fraction is 20% are put into single-necked flask, and single-necked flask is placed in ultrasound
In shaker, reaction solid is obtained by filtration after sonic oscillation 3h under conditions of frequency is 35kHz, successively uses dehydrated alcohol and steaming
Distilled water is put into blast drier after cleaning 3 times, and modified bamboo fiber is made in dry 5h under conditions of temperature is 80 DEG C；By weight
Number meter weighs 7 parts of above-mentioned modified bamboo fiber, 2.0 parts of silicon carbide powders, 1.0 parts of mullite fibers and 30 parts of distilled water investments
In beaker, magnetic agitation 50min is carried out under conditions of revolving speed is 1200r/min, and mixing suspension is made；Above-mentioned mixing is hanged
Supernatant liquid pours into sheet forming apparatus, and prefabricated paper embryo is made, and prefabricated paper embryo is put into vacuum oven, is 90 DEG C, very in temperature
Reciprocal of duty cycle dry 4h under conditions of being 100Pa, is made dry paper embryo, phenol resin solution is painted on dry paper embryo, is applied repeatedly
Brush 3 times, dries in room temperature after having brushed, dries and be placed in vulcanizer, under conditions of temperature is 160 DEG C, pressure is 7MPa
Vulcanize 15min and high-wearing feature paper friction material is made.
According to parts by weight, weighing 4 parts of bamboo fibres, 23 parts of propylene glycol, 0.6 part of lemon granulates, 7 parts of mass fractions is 6%
Ferrous sulfate solution investment beaker in, 3h is mixed with the revolving speed of 325r/min with blender, is filtered after the completion of stirring
To filter cake, 110min is placed in oven and dried after filter cake 4 times wash with distilled water, obtains desciccate；By above-mentioned desciccate
It is impregnated in conical flask with distilled water, the copper sulphate that the mass fraction that desciccate quality 35% is added dropwise into conical flask is 13% is molten
Conical flask is placed in sonic oscillation instrument by liquid, is vibrated 3h under conditions of supersonic frequency is 43kHz, is filtered after oscillation
To filter residue, wash with distilled water filter residue 4 times；Ethanol solution by above-mentioned filter residue with mass fraction for 13% ethyl orthosilicate is pressed
Mass ratio 1:5 is put into beaker, is placed the beaker in micro-wave oven, the microwave heating 17min under the power of 240W, after microwave heating
Modified filter residue is obtained by filtration, modified filter residue 4 times with washes of absolute alcohol, according to parts by weight, weighs 8 parts of modified filter residues, 17 parts
Ammonium hydroxide, 3 parts of ethylene glycol and the 4 parts of 1,4-butanediol that mass fraction is 23% are put into single-necked flask, and single-necked flask is placed in ultrasound
In shaker, reaction solid is obtained by filtration after sonic oscillation 4h under conditions of frequency is 34kHz, successively uses dehydrated alcohol and steaming
Distilled water is put into blast drier after cleaning 4 times, and modified bamboo fiber is made in dry 5h under conditions of temperature is 83 DEG C；By weight
Number meter weighs 8 parts of above-mentioned modified bamboo fiber, 2.2 parts of silicon carbide powders, 1.2 parts of mullite fibers and 31 parts of distilled water investments
In beaker, magnetic agitation 60min is carried out under conditions of revolving speed is 1300r/min, and mixing suspension is made；Above-mentioned mixing is hanged
Supernatant liquid pours into sheet forming apparatus, and prefabricated paper embryo is made, and prefabricated paper embryo is put into vacuum oven, is 93 DEG C, very in temperature
Reciprocal of duty cycle dry 4h under conditions of being 110Pa, is made dry paper embryo, phenol resin solution is painted on dry paper embryo, is applied repeatedly
Brush 4 times, dries in room temperature after having brushed, dries and be placed in vulcanizer, under conditions of temperature is 165 DEG C, pressure is 7MPa
Vulcanize 17min and high-wearing feature paper friction material is made.
According to parts by weight, weighing 5 parts of bamboo fibres, 25 parts of propylene glycol, 0.8 part of lemon granulates, 8 parts of mass fractions is 8%
Ferrous sulfate solution investment beaker in, 4h is mixed with the revolving speed of 350r/min with blender, is filtered after the completion of stirring
To filter cake, 120min is placed in oven and dried after filter cake 5 times wash with distilled water, obtains desciccate；By above-mentioned desciccate
It is impregnated in conical flask with distilled water, the copper sulphate that the mass fraction that desciccate quality 40% is added dropwise into conical flask is 15% is molten
Conical flask is placed in sonic oscillation instrument by liquid, is vibrated 4h under conditions of supersonic frequency is 45kHz, is filtered after oscillation
To filter residue, wash with distilled water filter residue 5 times；Ethanol solution by above-mentioned filter residue with mass fraction for 15% ethyl orthosilicate is pressed
Mass ratio 1:5 is put into beaker, is placed the beaker in micro-wave oven, the microwave heating 20min under the power of 250W, after microwave heating
Modified filter residue is obtained by filtration, modified filter residue 5 times with washes of absolute alcohol, according to parts by weight, weighs 9 parts of modified filter residues, 18 parts
Ammonium hydroxide, 4 parts of ethylene glycol and the 5 parts of 1,4-butanediol that mass fraction is 25% are put into single-necked flask, and single-necked flask is placed in ultrasound
In shaker, reaction solid is obtained by filtration after sonic oscillation 5h under conditions of frequency is 40kHz, successively uses dehydrated alcohol and steaming
Distilled water is put into blast drier after cleaning 5 times, and modified bamboo fiber is made in dry 6h under conditions of temperature is 85 DEG C；By weight
Number meter weighs 9 parts of above-mentioned modified bamboo fiber, 2.5 parts of silicon carbide powders, 1.3 parts of mullite fibers and 32 parts of distilled water investments
In beaker, magnetic agitation 70min is carried out under conditions of revolving speed is 1400r/min, and mixing suspension is made；Above-mentioned mixing is hanged
Supernatant liquid pours into sheet forming apparatus, and prefabricated paper embryo is made, and prefabricated paper embryo is put into vacuum oven, is 95 DEG C, very in temperature
Reciprocal of duty cycle dry 5h under conditions of being 120Pa, is made dry paper embryo, phenol resin solution is painted on dry paper embryo, is applied repeatedly
Brush 5 times, dries in room temperature after having brushed, dries and be placed in vulcanizer, under conditions of temperature is 170 DEG C, pressure is 8MPa
Vulcanize 20min and high-wearing feature paper friction material is made.
The paper friction material that comparative example is produced with Huangshan company is as a comparison case to high abrasion produced by the present invention
Paper friction material in property paper friction material and comparative example is detected, and testing result is as shown in table 1:
GB/T454-2002 is tested bursting strength assessment of indices according to national standards.
GB/T455-2002 is tested according to national standards for tear index measurement.
According to standard GB13826-2008 " wet type (non-metal kind) friction material ", surveyed using frictional property test machine
Examination.
1 performance measurement result of table
According to data in table 1 it is found that high-wearing feature paper friction material produced by the present invention, has mechanical strength height, frictional property
The features such as energy is good, and wear rate is low, and brake noise is low, environmental pollution is extremely low, and it is safe and reliable, there is wide prospect of the application.
Claims (6)
1. a kind of preparation method of high-wearing feature paper friction material, it is characterised in that specific preparation step are as follows:
(1) according to parts by weight, 3~5 parts of bamboo fibres, 20~25 parts of propylene glycol, 0.5~0.8 part of lemon granulates, 7~8 are weighed
In part ferrous sulfate solution investment beaker, is stirred with blender, filter cake is obtained by filtration after the completion of stirring, wash with distilled water filter cake
It is placed in oven and dried after 3~5 times, obtains desciccate；
(2) above-mentioned desciccate is impregnated in conical flask with distilled water, desciccate quality 30~40% is added dropwise into conical flask
Copper-bath, conical flask is placed in sonic oscillation instrument and is vibrated, filter residue is obtained by filtration after oscillation, wash with distilled water
Filter residue 3~5 times；
(3) ethanol solution of above-mentioned filter residue and ethyl orthosilicate 1:5 in mass ratio is put into beaker, places the beaker micro-wave oven
Modified filter residue is obtained by filtration in middle microwave heating after microwave heating, modified filter residue 3~5 times with washes of absolute alcohol, in parts by weight
Meter weighs 7~9 parts of modified filter residues, 16~18 parts of ammonium hydroxide, 2~4 parts of ethylene glycol and 3~5 parts of 1,4-butanediol investment single-necked flasks
In, single-necked flask is placed in sonic oscillation in sonic oscillation instrument, reaction solid is obtained by filtration after oscillation, successively with dehydrated alcohol and
Distilled water is put into dry obtained modified bamboo fiber in blast drier after cleaning 3~5 times；
(4) according to parts by weight, 7~9 parts of above-mentioned modified bamboo fiber, 2.0~2.5 parts of silicon carbide powders, 1.0~1.3 parts are weighed
Magnetic agitation in mullite fiber and 30~32 parts of distilled water investment beakers, is made mixing suspension；
(5) above-mentioned mixing suspension is poured into sheet forming apparatus, prefabricated paper embryo is made, prefabricated paper embryo is put into vacuum oven
Dry paper embryo is made in middle drying, and phenol resin solution is painted on dry paper embryo, brushes 3~5 times repeatedly, in room temperature after having brushed
In dry, dry be placed in vulcanizer vulcanize be made high-wearing feature paper friction material.
2. a kind of preparation method of high-wearing feature paper friction material according to claim 1, it is characterised in that: step
(1) mass fraction of the ferrous sulfate solution described in is 5~8%, and the revolving speed of blender is 300~350r/min, is mixed
Time is 3~4h, and drying time is 100~120min in baking oven.
3. a kind of preparation method of high-wearing feature paper friction material according to claim 1, it is characterised in that: step
(2) mass fraction of the copper-bath described in is 10~15%, and the supersonic frequency in sonic oscillation instrument is 40~45kHz, vibration
Swinging the time is 3~4h.
4. a kind of preparation method of high-wearing feature paper friction material according to claim 1, it is characterised in that: step
(3) mass fraction of the ethanol solution of the ethyl orthosilicate described in is 10~15%, and the power in micro-wave oven is 230~250W,
Microwave heating time is 15~20min, and the mass fraction of ammonium hydroxide is 20~25%, the frequency in sonic oscillation instrument is 35~
40kHz, sonic oscillation time are 3~5h, and the temperature in blast drier is 80~85 DEG C, and drying time is 5~6h.
5. a kind of preparation method of high-wearing feature paper friction material according to claim 1, it is characterised in that: step
(4) magnetic agitation rotating speed described in is 1200~1400r/min, and the magnetic agitation time is 50~70min.
6. a kind of preparation method of high-wearing feature paper friction material according to claim 1, it is characterised in that: step
(5) temperature in vacuum oven described in is 90~95 DEG C, and vacuum degree is 100~120Pa, and drying time is 4~5h, sulphur
Temperature in change machine is 160~170 DEG C, and pressure is 7~8MPa, and vulcanization time is 15~20min.
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| CN111087973A (en) * | 2019-12-17 | 2020-05-01 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN111087973B (en) * | 2019-12-17 | 2021-07-27 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
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