CN106590531A - Automotive brake friction material and preparation method thereof - Google Patents
Automotive brake friction material and preparation method thereof Download PDFInfo
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- CN106590531A CN106590531A CN201611252628.6A CN201611252628A CN106590531A CN 106590531 A CN106590531 A CN 106590531A CN 201611252628 A CN201611252628 A CN 201611252628A CN 106590531 A CN106590531 A CN 106590531A
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- friction material
- fibre
- automotive brake
- brake friction
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/149—Antislip compositions
-
- 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—Compositions of linings; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
- F16D69/028—Compositions based on metals or inorganic oxides containing fibres
Abstract
The invention provides an automotive brake friction material and a preparation method thereof. The automotive brake friction material comprises a mixed fiber framework composed of low-carbon steel fibers, potassium titanate fibers, trigonal boron nitride powder, graphite powder, silicon magnesium calcium compound ceramic fibers and polytetrafluoroethylene. Compared with the prior art, the automotive brake friction material disclosed by the invention has the advantages of reducing the production cost, improving the heat conduction and dissipation properties of the friction material, reducing the noise and improving the friction coefficient stability.
Description
Technical field
The invention belongs to the technical field of friction material, more particularly to a kind of automotive brake friction material and its preparation side
Method.
Background technology
Friction material is for playing the effects such as transmission, braking, deceleration, steering, parking in many movable machineries and equipment
Functional accessory, it may be said that from the beginning of having mechanical movement, the mankind just had the requirement of skidding, wooden unit, Corii Bovis seu Bubali, rubber etc. once
Jing is used as brake material.Before the 1970s and 1980s in last century asbestos friction material as traditional product always by people
Class is used in a large number, after this, because known widely asbestos can cause pulmonary lesion and ask rind gall and relevant with the generation of pulmonary carcinoma.
International medical oncology symposium confirms that asbestos fibre contains carcinogen within 1972, hereafter, friction goodss without stone
Cottonizing and pollution-freeization are increasingly becoming the common recognition of world's sexual development.No. 13 regulation of UNECE (ECE) and
In the relevant standard of international standard committee (ISO), expressly provide banning the production, sell and use asbestos product.International Maritime group
Knit the amendment clear stipulaties of 1974S0LAS pacts 2000 " for all ships, the novel installation containing asbestos material should forbid,
Unless there are particular/special requirement." State Bureau of Technical Supervision specifies in mandatory national standards GB12676-1999, " from 2003 10
From the moon 1, brake lining should not contain asbestos ".
It is many as the substitution material of asbestos fibre reinforcing material in existing asbestos-free friction material technology, metal
Fiber, carbon fiber, glass fibre, ceramic fibre and aramid fiber are all the friction such as all kinds of brakes of manufacture, clutch facing units
Ideal reinforcing material in the raw material of part, its characteristic and price and proportioning each other are largely fixed
The performance and application prospect of friction element.Friction material is mainly made up of three parts:1st, binding agent；2nd, reinforcing fiber；3rd, rub
Wipe properties modifier.The selection of various formula and composition material must be carried out according to the target to be reached, and be selected
Suitable manufacture method and production technology.
At present, automobile brake friction plate uses in a large number the antimony of curing two, for profit of the friction material in high temperature friction
It is sliding, it is ensured that high temperature friction coefficient is stablized.Antimony trisulfide is obtained through selected and chemical purification by brightness Jin Kuang, is black solid powder
End.Its fusing point, than relatively low, is 548 0C, the stibium oxide generated after pyrolytic, and the gold generated in the presence of reducing agent
Category antimony, the oxidizing fire of material when can prevent high temperature, keeps the stable friction factor of material, improves the ability of anti-burning of material,
Can also reduce organic bond decomposition rate in high temperature, improve the service life of material, serve high temperature inorganic binding agent and
The effect of lubrication friction regulator.But, antimony is heavy metal element, with after in friction dust air inlet, rainwater and soil not
It is degradable, directly or indirectly to human body, heavy metal poisoning can be caused to health of people, destroy human body interior circulation respiratory tract and
Therefore, EC regulations require the consumption that gradually reduce the antimonous sulfide in friction material, at the latest in the year two thousand twenty at digestion road junction
Thoroughly forbid the addition in friction material.Obviously, prior art automobile brake friction plate is existed containing heavy metal antimony, right
Environment, damages to human body, will it is disabled used in automobile brake friction plate the problems such as.
The content of the invention
In view of this, the invention provides a kind of automotive brake friction material, including low-carbon (LC) steel fibre, potassium titanate are fine
The composite fibre skeleton of dimension, tripartite's boron nitride powder, graphite powder, silicon magnesium calcified material ceramic fibre and politef composition.
In some embodiments, frictional layer is arranged by binding agent adhesion on the composite fibre skeleton；The friction
Layer includes twill weave cloth；The twill weave cloth is formed by strand's braiding；The strand include friction spun yarn, copper wire,
Basalt fibre, aramid fiber and carbon fiber are twisted；The friction spun yarn is by viscose rayon, aramid fiber and acrylic fiber blending
Form.
In some embodiments, described adhesive is mixed to prepare by phenolic resin and nitrile rubber.
In some embodiments, including 2～4 parts of low-carbon (LC) steel fibres, 2～4 parts of potassium titanate fibres, 3～5 parts of tripartites' nitridations
The composite fibre bone of boron powder, 2～5 parts of graphite powders, 1～3 part of silicon magnesium calcified material ceramic fibre and 4～8 parts of politef compositions
Frame.
In some embodiments, the composite fibre skeleton include 4 parts of low-carbon (LC) steel fibres, 2 parts of potassium titanate fibres, 3 parts
Tripartite's boron nitride powder, 5 parts of graphite powders, 1 part of silicon magnesium calcified material ceramic fibre and 8 parts of politef.
In some embodiments, the composite fibre skeleton include 2 parts of low-carbon (LC) steel fibres, 3 parts of potassium titanate fibres, 5 parts
Tripartite's boron nitride powder, 3 parts of graphite powders, 3 parts of silicon magnesium calcified material ceramic fibres and 6 parts of politef.
In some embodiments, the friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are according to S
Sth. made by twisting, the twist are 80～100 twistings for strand.
Present invention also offers a kind of preparation method of automotive brake friction material, comprises the steps：
(1) dispensing, batch mixing：Take 2～4 parts of low-carbon (LC) steel fibres, 2～4 parts of potassium titanate fibres, 3～5 parts of tripartite's boron nitride powders, 2
～5 parts of graphite powders and 1～3 part of silicon magnesium calcified material ceramic fibre are added and stir in homogenizer 3～5 minutes abundant batch mixings equal
It is even, add 4～8 parts of polytetrafluorethylepowder powders and stir 5～10 minutes, uniform batch mixing is obtained, the rotating speed of homogenizer is
3000～4000 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is obtained
Friction spun yarn；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are entered with certain proportion
Row plying, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom,
Then uniform batch mixing prepared by step (1) is laid on twill weave cloth, finally covers one layer of twill again on uniform batch mixing
Woven cloth, at ambient temperature, when being unidirectionally forced into 80～180MPa with the speed of 5～10MPa/min, keeps pressure 30～70
After minute, the demoulding obtains preforming sample；
(6) binding agent is prepared：Phenolic resin and nitrile rubber are taken according to weight than 3～5:1～3 proportioning, is subsequently adding and stirs
Mix machine to stir 5～15 minutes, 300～800 turns/min of rotating speed is obtained binding agent；
(7) infiltrate：Preforming sample obtained in step (5) is immersed 40～70 minutes in binding agent obtained in step (6),
Binder dosage is 1.5～3 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：By the preforming sample infiltrated through step (7) be put in electric furnace with 80～100 degrees Celsius/it is little
When heating rate, rise to 400～420 degrees Celsius from room temperature, sintering solidifies it in 5～10 hours, then lowers the temperature, control cooling
Speed is 40～55 degrees Celsius/hour, is down to less than 150～180 degrees Celsius and naturally cools to room temperature with electric furnace again, and automobile is obtained
Use friction material.
In some embodiments, the rotating speed of step (1) the high speed blender is 3500 turns/min.
Automotive brake friction material provided by the present invention compared with prior art, has the advantage that：
Compared to existing technology, automotive brake friction material of the invention reduces production cost, improves friction material
Heat conduction, heat dispersion, reduce noise, improve coefficient of friction stability friction material.
Especially, automotive brake friction material of the invention, including composite fibre skeleton and it is arranged on composite fibre bone
Frictional layer on frame.The friction material of the present invention is without asbestos and used with low cost, and matrix material integral coherence is more
Good, tinsel is evenly distributed, friction material heat conduction, radiating faster, it is more excellent.Using the friction made by friction material of the invention
The more existing friction material precision of original paper size is higher.Completely avoid the bubble swelling of the production process appearance of laminate product, divide
The problems such as layer and warpage.The friction material of the present invention has high-low temperature resistant, wear-resistant, low noise and frictional damping torque
Stable, environmentally friendly the features such as.
In sum, the automotive brake friction material of special construction of the present invention, it has the advantages that above-mentioned many and reality
With value, and similar structure design is there are no in like product publish or use and really belong to innovation, generate handy
And the effect of practicality, more existing health tea has the multinomial effect promoted, so as to more be suitable to practicality, and with extensive product
Industry is worth.
Specific embodiment
For the ease of understanding the present invention, technical scheme is elaborated with reference to the mode of embodiment,
Elaborate many details in order to fully understand the present invention in the following description.
But the present invention can be to be much different from alternate manner described here implementing, and those skilled in the art can be with
Similar improvement is done in the case of without prejudice to intension of the present invention, therefore the present invention is not embodied as being limited by following public.
As used herein, term：
" one ", " one kind " and " described " are used interchangeably and refer to one or more.
"and/or" is used to represent that one of illustrated situation or both may to occur, and for example, A and/or B includes (A
And B) and (A or B)；
In addition, the scope stated by end points herein includes all numerical value (for example, 1 to 10 bag included in the range of this
Include 1.4,1.9,2.33,5.75,9.98 etc.).
In addition, the statement of " at least one " herein include one and the above all numbers (for example, at least 2, at least
4, at least 6, at least 8, at least 10, at least 25, at least 50, at least 100 etc.).
The invention provides a kind of automotive brake friction material, including low-carbon (LC) steel fibre, potassium titanate fibre, tripartite's nitridation
The composite fibre skeleton of boron powder, graphite powder, silicon magnesium calcified material ceramic fibre and politef composition.
In some embodiments of the invention, frictional layer is arranged by binding agent adhesion on the composite fibre skeleton；It is described
Frictional layer includes twill weave cloth；The twill weave cloth is formed by strand's braiding；The strand includes friction spun yarn, copper
Silk, basalt fibre, aramid fiber and carbon fiber are twisted；The friction spun yarn is by viscose rayon, aramid fiber and acrylic fiber
Blending is formed.
In some embodiments of the invention, described adhesive is mixed to prepare by phenolic resin and nitrile rubber.
In some embodiments of the invention, including 2～4 parts of low-carbon (LC) steel fibres, 2～4 parts of potassium titanate fibres, 3～5 parts of tripartites
The mixing of boron nitride powder, 2～5 parts of graphite powders, 1～3 part of silicon magnesium calcified material ceramic fibre and 4～8 parts of politef compositions is fine
Dimension skeleton.
In some embodiments of the invention, the composite fibre skeleton include 4 parts of low-carbon (LC) steel fibres, 2 parts of potassium titanate fibres,
3 parts of tripartite's boron nitride powders, 5 parts of graphite powders, 1 part of silicon magnesium calcified material ceramic fibre and 8 parts of politef.
In some embodiments of the invention, the composite fibre skeleton include 2 parts of low-carbon (LC) steel fibres, 3 parts of potassium titanate fibres,
5 parts of tripartite's boron nitride powders, 3 parts of graphite powders, 3 parts of silicon magnesium calcified material ceramic fibres and 6 parts of politef.
In some embodiments of the invention, the friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are pressed
According to S twist with the fingers, the twist be 80～100 twistings for strand.
Present invention also offers a kind of preparation method of automotive brake friction material, comprises the steps：
(1) dispensing, batch mixing：Take 2～4 parts of low-carbon (LC) steel fibres, 2～4 parts of potassium titanate fibres, 3～5 parts of tripartite's boron nitride powders, 2
～5 parts of graphite powders and 1～3 part of silicon magnesium calcified material ceramic fibre are added and stir in homogenizer 3～5 minutes abundant batch mixings equal
It is even, add 4～8 parts of polytetrafluorethylepowder powders and stir 5～10 minutes, uniform batch mixing is obtained, the rotating speed of homogenizer is
3000～4000 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is obtained
Friction spun yarn；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are entered with certain proportion
Row plying, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom,
Then uniform batch mixing prepared by step (1) is laid on twill weave cloth, finally covers one layer of twill again on uniform batch mixing
Woven cloth, at ambient temperature, when being unidirectionally forced into 80～180MPa with the speed of 5～10MPa/min, keeps pressure 30～70
After minute, the demoulding obtains preforming sample；
(6) binding agent is prepared：Phenolic resin and nitrile rubber are taken according to weight than 3～5:1～3 proportioning, is subsequently adding and stirs
Mix machine to stir 5～15 minutes, 300～800 turns/min of rotating speed is obtained binding agent；
(7) infiltrate：Preforming sample obtained in step (5) is immersed 40～70 minutes in binding agent obtained in step (6),
Binder dosage is 1.5～3 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：By the preforming sample infiltrated through step (7) be put in electric furnace with 80～100 degrees Celsius/it is little
When heating rate, rise to 400～420 degrees Celsius from room temperature, sintering solidifies it in 5～10 hours, then lowers the temperature, control cooling
Speed is 40～55 degrees Celsius/hour, is down to less than 150～180 degrees Celsius and naturally cools to room temperature with electric furnace again, and automobile is obtained
Use friction material.
Above-mentioned, compared to existing technology, the automotive brake friction material of the present invention reduces production cost, improves friction
The heat conduction of material, heat dispersion, reduction noise, the friction material of the stability of raising coefficient of friction.
Especially, automotive brake friction material of the invention, including composite fibre skeleton and it is arranged on composite fibre bone
Frictional layer on frame.The friction material of the present invention is without asbestos and used with low cost, and matrix material integral coherence is more
Good, tinsel is evenly distributed, friction material heat conduction, radiating faster, it is more excellent.Using the friction made by friction material of the invention
The more existing friction material precision of original paper size is higher.Completely avoid the bubble swelling of the production process appearance of laminate product, divide
The problems such as layer and warpage.The friction material of the present invention has high-low temperature resistant, wear-resistant, low noise and frictional damping torque
Stable, environmentally friendly the features such as.
In some embodiments of the invention, the rotating speed of step (1) the high speed blender is 3500 turns/min.
For the ease of understanding the present invention, with reference to embodiment technical scheme is further illustrated.Applicant
Statement, the present invention illustrates the detailed process equipment of the present invention and technological process, but the present invention not office by above-described embodiment
It is limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the present invention has to rely on above-mentioned detailed process equipment and technique
Flow process could be implemented.Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, each to product of the present invention
The equivalence replacement of raw material and the addition of auxiliary element, the selection of concrete mode etc., all fall within protection scope of the present invention and disclosure
Within the scope of.
Embodiment 1
A kind of preparation method of automotive brake friction material, comprises the steps：
(1) dispensing, batch mixing：Take 3 parts of low-carbon (LC) steel fibres, 2 parts of potassium titanate fibres, 4 parts of tripartite's boron nitride powders, 3 parts of graphite powders
3 minutes abundant batch mixings of stirring in homogenizer are added uniformly, to add 3 parts of polytetrafluoros with 2 parts of silicon magnesium calcified material ceramic fibres
Ethylene powder is stirred 6 minutes, obtains uniform batch mixing, and the rotating speed of homogenizer is 3300 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is obtained
Friction spun yarn；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are entered with certain proportion
Row plying, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom,
Then uniform batch mixing prepared by step (1) is laid on twill weave cloth, finally covers one layer of twill again on uniform batch mixing
Woven cloth, at ambient temperature, when being unidirectionally forced into 120MPa with the speed of 3MPa/min, keeps pressure after 50 minutes, the demoulding
Obtain preforming sample；
(6) binding agent is prepared：Take phenolic resin and nitrile rubber and compare 3 according to weight:1 proportioning, is subsequently adding blender and stirs
Mix 5 minutes, 300 turns/min of rotating speed, binding agent is obtained；
(7) infiltrate：Preforming sample obtained in step (5) is immersed 40～70 minutes in binding agent obtained in step (6),
Binder dosage is 1.5 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：The preforming sample infiltrated through step (7) is put in electric furnace with 80 degrees Celsius/hour
Heating rate, from room temperature 410 degrees Celsius are risen to, and sintering solidifies it in 5 hours, then lowers the temperature, and it is Celsius for 40 to control rate of temperature fall
Degree/hour, is down to less than 150 degrees Celsius and naturally cools to room temperature with electric furnace again, and vapour automotive friction material is obtained.
Embodiment 2
A kind of preparation method of automotive brake friction material, comprises the steps：
(1) dispensing, batch mixing：Take 2 parts of low-carbon (LC) steel fibres, 4 parts of potassium titanate fibres, 5 parts of tripartite's boron nitride powders, 2 parts of graphite powders
10 minutes abundant batch mixings of stirring in homogenizer are added uniformly, to add 4 parts of polytetrafluoros with 4 parts of silicon magnesium calcified material ceramic fibres
Ethylene powder is stirred 8 minutes, obtains uniform batch mixing, and the rotating speed of homogenizer is 4000 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is obtained
Friction spun yarn；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are entered with certain proportion
Row plying, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom,
Then uniform batch mixing prepared by step (1) is laid on twill weave cloth, finally covers one layer of twill again on uniform batch mixing
Woven cloth, at ambient temperature, when being unidirectionally forced into 100MPa with the speed of 5MPa/min, keeps pressure after 30 minutes, the demoulding
Obtain preforming sample；
(6) binding agent is prepared：Take phenolic resin and nitrile rubber and compare 5 according to weight:3 proportionings, are subsequently adding blender and stir
Mix 10 minutes, 500 turns/min of rotating speed, binding agent is obtained；
(7) infiltrate：Preforming sample obtained in step (5) is immersed 40～70 minutes in binding agent obtained in step (6),
Binder dosage is 3 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：The preforming sample infiltrated through step (7) is put in electric furnace with 80 degrees Celsius/hour
Heating rate, from room temperature 400 degrees Celsius are risen to, and sintering solidifies it in 6 hours, then lowers the temperature, and it is Celsius for 45 to control rate of temperature fall
Degree/hour, is down to less than 180 degrees Celsius and naturally cools to room temperature with electric furnace again, and vapour automotive friction material is obtained.
Embodiment 3
A kind of preparation method of automotive brake friction material, comprises the steps：
(1) dispensing, batch mixing：Take 5 parts of low-carbon (LC) steel fibres, 8 parts of potassium titanate fibres, 3 parts of tripartite's boron nitride powders, 4 parts of graphite powders
10 minutes abundant batch mixings of stirring in homogenizer are added uniformly, to add 3 parts of polytetrafluoros with 6 parts of silicon magnesium calcified material ceramic fibres
Ethylene powder is stirred 10 minutes, obtains uniform batch mixing, and the rotating speed of homogenizer is 3000 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is obtained
Friction spun yarn；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are entered with certain proportion
Row plying, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom,
Then uniform batch mixing prepared by step (1) is laid on twill weave cloth, finally covers one layer of twill again on uniform batch mixing
Woven cloth, at ambient temperature, when being unidirectionally forced into 120MPa with the speed of 8MPa/min, keeps pressure after 60 minutes, the demoulding
Obtain preforming sample；
(6) binding agent is prepared：Take phenolic resin and nitrile rubber and compare 5 according to weight:3 proportionings, are subsequently adding blender and stir
Mix 8 minutes, 800 turns/min of rotating speed, binding agent is obtained；
(7) infiltrate：Preforming sample obtained in step (5) is immersed 40～70 minutes in binding agent obtained in step (6),
Binder dosage is 3 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：The preforming sample infiltrated through step (7) is put in electric furnace with 80 degrees Celsius/hour
Heating rate, from room temperature 380 degrees Celsius are risen to, and sintering solidifies it in 8 hours, then lowers the temperature, and it is Celsius for 55 to control rate of temperature fall
Degree/hour, is down to less than 140 degrees Celsius and naturally cools to room temperature with electric furnace again, and vapour automotive friction material is obtained.
Claims (9)
1. a kind of automotive brake friction material, it is characterised in that including low-carbon (LC) steel fibre, potassium titanate fibre, tripartite's boron nitride
The composite fibre skeleton of powder, graphite powder, silicon magnesium calcified material ceramic fibre and politef composition.
2. automotive brake friction material according to claim 1, it is characterised in that by viscous on the composite fibre skeleton
Mixture adhesion arranges frictional layer；The frictional layer includes twill weave cloth；The twill weave cloth is formed by strand's braiding；Institute
State strand to be twisted including friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber；The friction spun yarn is by viscose glue
Fiber, aramid fiber and acrylic fiber blending are formed.
3. automotive brake friction material according to claim 2, it is characterised in that described adhesive is by phenolic resin and fourth
Fine rubber mix is obtained.
4. automotive brake friction material according to claim 3, it is characterised in that including 2～4 parts of low-carbon (LC) steel fibres, 2～
4 parts of potassium titanate fibres, 3～5 parts of tripartite's boron nitride powders, 2～5 parts of graphite powders, 1～3 part of silicon magnesium calcified material ceramic fibre and 4～8
The composite fibre skeleton of part politef composition.
5. automotive brake friction material according to claim 4, it is characterised in that the composite fibre skeleton includes 4 parts
Low-carbon (LC) steel fibre, 2 parts of potassium titanate fibres, 3 parts of tripartite's boron nitride powders, 5 parts of graphite powders, 1 part of silicon magnesium calcified material ceramic fibre and 8 parts
Politef.
6. automotive brake friction material according to claim 5, it is characterised in that the composite fibre skeleton includes 2 parts
Low-carbon (LC) steel fibre, 3 parts of potassium titanate fibres, 5 parts of tripartite's boron nitride powders, 3 parts of graphite powders, 3 parts of silicon magnesium calcified material ceramic fibres and 6 parts
Politef.
7. automotive brake friction material according to claim 6, it is characterised in that the friction spun yarn, copper wire, basalt
Fiber, aramid fiber and carbon fiber according to S twist with the fingers, the twist be 80～100 twistings for strand.
8. the preparation method of automotive brake friction material according to claim 1, it is characterised in that comprise the steps：
(1) dispensing, batch mixing：Take 2～4 parts of low-carbon (LC) steel fibres, 2～4 parts of potassium titanate fibres, 3～5 parts of tripartite's boron nitride powders, 2～5
Part graphite powder and 1～3 part of silicon magnesium calcified material ceramic fibre add 3～5 minutes abundant batch mixings of stirring in homogenizer uniform, then
Adding 4～8 parts of polytetrafluorethylepowder powders to stir 5～10 minutes, obtain uniform batch mixing, the rotating speed of homogenizer is 3000～
4000 turns/min；
(2) friction spun yarn is prepared：Take viscose rayon, aramid fiber and acrylic fiber and compare 1 according to weight:1:1 blending is rubbed
Spinning；
(3) strand is prepared：Friction spun yarn, copper wire, basalt fibre, aramid fiber and carbon fiber are closed with certain proportion
Stock, is obtained strand；
(4) twill weave cloth is prepared：Strand obtained in step (3) is woven into into twill weave cloth with twill weave machine；
(5) it is compressing：Twill weave cloth obtained in step (4) is laid on into plastics hydraulic forming machine mold cavity bottom, then
Uniform batch mixing prepared by step (1) is laid on twill weave cloth, one layer of twill weave is finally covered again on uniform batch mixing
Cloth, at ambient temperature, when being unidirectionally forced into 80～180MPa with the speed of 5～10MPa/min, keeps pressure 30～70 minutes
Afterwards, the demoulding obtains preforming sample；
(6) binding agent is prepared：Phenolic resin and nitrile rubber are taken according to weight than 3～5:1～3 proportioning, is subsequently adding blender
Stirring 5～15 minutes, 300～800 turns/min of rotating speed is obtained binding agent；
(7) infiltrate：By 40～70 minutes in binding agent obtained in preforming sample immersion step (6) obtained in step (5), bond
Agent consumption is 1.5～3 times of preforming sample volume, then pulls drip-dry out；
(8) sintering curing：The preforming sample infiltrated through step (7) is put in electric furnace with 80～100 degrees Celsius/hour
Heating rate, from room temperature 400～420 degrees Celsius are risen to, and sintering solidifies it in 5～10 hours, then lowers the temperature, and controls rate of temperature fall
For 40～55 degrees Celsius/hour, it is down to less than 150～180 degrees Celsius and naturally cools to room temperature with electric furnace again, automobile is obtained with rubbing
Wipe material.
9. the preparation method of automotive brake friction material according to claim 8, it is characterised in that in the step (1)
The rotating speed of homogenizer is 3500 turns/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252628.6A CN106590531A (en) | 2016-12-30 | 2016-12-30 | Automotive brake friction material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN109183224A (en) * | 2018-11-14 | 2019-01-11 | 东台市华阳玻纤有限责任公司 | A kind of automobile brake resurrection glass fibre braided material |
| CN112226206A (en) * | 2020-11-09 | 2021-01-15 | 贵阳天龙摩擦材料有限公司 | Preparation method of integrally woven friction material |
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