CN104387069B - Preparation method of carbon/silicon carbide friction material for airplane brake disc - Google Patents
Preparation method of carbon/silicon carbide friction material for airplane brake disc Download PDFInfo
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Abstract
The invention relates to a preparation method of a carbon/silicon carbide friction material for an airplane brake disc, and belongs to the technical field of composite materials. The method comprises the following steps: heating fatty acid zinc, adding silicon carbide powder, stirring uniformly, and cooling to obtain modified powder; adding a cationic surfactant and glycerol, primarily mixing in a mixer, adding ethylene bis stearamide, heating and mixing, and cooling to room temperature to obtain a cationic preform; heating and mixing calcined petroleum coke, an anionic surfactant, epoxy resin and ethyl acetate, and cooling to obtain an anionic prefabricated body; mixing the cation preform and the anion preform, drying and ball-milling to obtain a mixture; and uniformly mixing the mixture with graphite powder, titanium oxide powder, iron powder, nickel powder, methyl silicone oil and polycarbonate, and sintering in a vacuum sintering furnace to obtain the carbon/silicon carbide composite material. The friction material of the invention has excellent friction performance.
Description
Technical field
The present invention relates to the preparation method of a kind of carbon for aeroplane brake discs/carborundum friction material, belong to composite wood
Material technical field.
Background technology
In the research of modern tribology, friction material refers to actively utilize its frictional behavior, to improve friction and abrasion
For the purpose of energy, for the friction portion of friction clutch Yu friction brake, it is achieved the transmission of power, blocking-up, moving object
The material used by behavior such as deceleration, stopping.In Terminology, generally it is used in the friction material in brake and is referred to as brake
Material, such as automotive brake material, train braking material and brake material for airplane etc..
Carbon/carbon/carbon composition braking material is to be that matrix uses densification repeatedly and carbonization technique to obtain with carbon fiber (or carbon cloth)
High performance brake material.Carbon/carbon/carbon composition braking material is developed at 20 century 70s the earliest, is mainly used in aircraft and stops
Car sheet.Under the high temperature conditions due to its light weight, the features such as strong, the length in service life of energy high, high temperature resistant can be carried, once appearance,
Just rapidly be popularization and application.As a example by aircraft brake: after using carbon/carbon/carbon composition braking material on Boeing-747 aircraft, relatively
For metal brake, Quality Down 81615kg；And heat reservoir is 3～5 times of metal brake, at 2000 DEG C, the strength of materials is not
Any change occurs, and 3000 DEG C increase on the contrary with calculating modulus, therefore can at 2200 DEG C trouble free service；Meanwhile, under this condition
Have no during work and cohere and deformation.Carbon/carbon/carbon composition braking material is in friction speed, than pressing and can rub under the conditions of carrying
Factor change is little, weares and teares more stable, and in the use of Boeing 7572200 type aircraft, the life-span rises and falls up to 3000, is metal brake
More than 3 times of material.
CN101486588A discloses the preparation method of a kind of carbon fiber reinforced carbon-silicon carbide double matrix friction material, adopts
It is pressed into Carbon fibe with short carbon fiber, graphite powder, industrial silica fume and adhesive cool and strengthens graphite powder and (C/C-SI) block of silica flour
Body material, carries out Mechanical Crushing and pelletize by prepared C/C-SI block materials, then granule temperature and pressure is become C/C-SI biscuit,
C/C-SI biscuit carbonization is prepared C/C-SI porous body, finally C/C-SI porous body is carried out non-steeped formula orientation reaction fusion adhesion system
Obtain carbon fiber reinforced carbon-silicon carbide double matrix (C/C-SIC) material.But the material that this technique prepares also exists friction system
The problem that number is bad.CN102746015A disclose a kind of reaction-sintered carbon/carbon-silicon carbide-boron nitride composite friction material and
Its preparation method, comprises the following raw materials by weight percent, and burns through carbon fiber dispersion, batch mixing, warm-pressing formation, carbonization, reaction
Knot is made: 5～20% chopped carbon fiber, 2～6% boron nitride powder, 5～15% silica flour, 25～48% graphite powder, 5～15% carborundum
Powder, 20～45% thermosetting resin powder.But the material that above-mentioned technique prepares also exists the problem that coefficient of friction is bad.
Summary of the invention
It is an object of the invention to: solve the problem that carbon/carborundum friction material coefficient of waste is higher, entered by preparation method
Row improves, and proposes the preparation method of a kind of carbon for aeroplane brake discs/carborundum friction material.
Technical scheme:
The preparation method of a kind of carbon for aeroplane brake discs/carborundum friction material, comprises the steps:
1st step, the preparation of cation precast body: by weight, take fatty acid zinc 20～30 parts, be heated to 150～170
DEG C, it is subsequently adding silicon carbide powder 20～30 parts, stirs, after cooling, obtain modified powder；Add cationic surface to live
Property agent 2～4 parts, glycerol 10～20 parts, the most mixed in mixer, add ethylene bis stearamide 5～10 parts, heat up mixing,
It is cooled to room temperature, obtains cation precast body；
2nd step, the preparation of anion precast body: take calcined petroleum coke 30～40 parts, anion surfactant 2～4
Part, epoxy resin 10～20 parts, ethyl acetate 15～30 parts, heat up mixing, after cooling, obtains anion precast body；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture；
4th step, by mixture and graphite powder 10～20 parts, titanium dioxide powder 2～4 parts, iron powder 4～8 parts, nikel powder 2～4
Part, methyl-silicone oil 12～24 parts, Merlon 5～10 parts of mix homogeneously, after being sintered in vacuum sintering furnace, obtain carbon/
Composite material of silicon carbide.
Described cationic surfactant is polymine.
Described anion surfactant is ammonium polymethacrylate.
In the 1st described step, when carrying out intensification mixing, in addition it is also necessary to addition chlorinated polyethylene 5～10 parts.
In the 3rd described step, when mixing, in addition it is also necessary to addition citric acid 4～6 parts.
In the 1st described step, the temperature of the mixing that heats up is 80～110 DEG C, and the time of the mixing that heats up is 20～30 minutes.
In the 2nd described step, the temperature of the mixing that heats up is 40～50 DEG C, and the time of the mixing that heats up is 20～30 minutes.
In the 3rd described step, drying temperature is 110～120 DEG C, drying time 2～4 hours.
In the 4th described step, sintering temperature is 1400～1600 DEG C, and sintering time is 4～6 hours.
Beneficial effect
The present invention by by coke and carborundum respectively by making precast body by the way of, make the electric charge that they bands are different,
Make be formed between the two preferably parcel, and then improve the frictional behaviour of friction material.
Detailed description of the invention
Embodiment 1
1st step, the preparation of cation precast body: take fatty acid zinc 20g, be heated to 150 DEG C, be subsequently adding silicon carbide powder
20g, stirs, and after cooling, obtains modified powder；Add cationic surfactant 2g, glycerol 10g, in mixer
Just mixed, add ethylene bis stearamide 5g, heat up mixing, and the temperature of the mixing that heats up is 80 DEG C, and the time of the mixing that heats up is
20 minutes, being cooled to room temperature, obtain cation precast body, described cationic surfactant is polymine；
2nd step, the preparation of anion precast body: take calcined petroleum coke 30g, anion surfactant 2g, asphalt mixtures modified by epoxy resin
Fat 10g, ethyl acetate 15g, heat up mixing, after cooling, obtains anion precast body, and described anion surfactant is poly-
Ammonium methacrylate, the temperature of the mixing that heats up is 40 DEG C, and the time of the mixing that heats up is 20 minutes；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture, dry temperature
Degree is 110 DEG C, drying time 2 hours；
4th step, by mixture and graphite powder 10g, titanium dioxide powder 2g, iron powder 4g, nikel powder 2g, methyl-silicone oil 12g, poly-carbon
Acid esters 5g mix homogeneously, after being sintered, obtains carbon/composite material of silicon carbide in vacuum sintering furnace, and sintering temperature is 1400
DEG C, sintering time is 4 hours.
Embodiment 2
1st step, the preparation of cation precast body: take fatty acid zinc 30g, be heated to 170 DEG C, be subsequently adding silicon carbide powder
30g, stirs, and after cooling, obtains modified powder；Add cationic surfactant 4g, glycerol 20g, in mixer
The most mixed, add ethylene bis stearamide 10g, heat up mixing, and the temperature of the mixing that heats up is 110 DEG C, the time of the mixing that heats up
Being 30 minutes, be cooled to room temperature, obtain cation precast body, described cationic surfactant is polymine；
2nd step, the preparation of anion precast body: take calcined petroleum coke 40g, anion surfactant 4g, asphalt mixtures modified by epoxy resin
Fat 20g, ethyl acetate 30g, heat up mixing, after cooling, obtains anion precast body, and described anion surfactant is poly-
Ammonium methacrylate, the temperature of the mixing that heats up is 50 DEG C, and the time of the mixing that heats up is 30 minutes；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture, dry temperature
Degree is 120 DEG C, drying time 4 hours；
4th step, by mixture and graphite powder 20g, titanium dioxide powder 4g, iron powder 8g, nikel powder 4g, methyl-silicone oil 24g, poly-carbon
Acid esters 10g mix homogeneously, after being sintered, obtains carbon/composite material of silicon carbide in vacuum sintering furnace, and sintering temperature is 1600
DEG C, sintering time is 6 hours.
Embodiment 3
1st step, the preparation of cation precast body: take fatty acid zinc 25g, be heated to 160 DEG C, be subsequently adding silicon carbide powder
25g, stirs, and after cooling, obtains modified powder；Add cationic surfactant 3g, glycerol 15g, in mixer
Just mixed, add ethylene bis stearamide 7g, heat up mixing, and the temperature of the mixing that heats up is 90 DEG C, and the time of the mixing that heats up is
25 minutes, being cooled to room temperature, obtain cation precast body, described cationic surfactant is polymine；
2nd step, the preparation of anion precast body: take calcined petroleum coke 35g, anion surfactant 3g, asphalt mixtures modified by epoxy resin
Fat 15g, ethyl acetate 20g, heat up mixing, after cooling, obtains anion precast body, and described anion surfactant is poly-
Ammonium methacrylate, the temperature of the mixing that heats up is 45 DEG C, and the time of the mixing that heats up is 25 minutes；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture, dry temperature
Degree is 115 DEG C, drying time 3 hours；
4th step, by mixture and graphite powder 15g, titanium dioxide powder 3g, iron powder 5g, nikel powder 3g, methyl-silicone oil 20g, poly-carbon
Acid esters 7g mix homogeneously, after being sintered, obtains carbon/composite material of silicon carbide in vacuum sintering furnace, and sintering temperature is 1500
DEG C, sintering time is 5 hours.
Embodiment 4
Difference with embodiment 3 is: in the 1st step, when carrying out intensification mixing, in addition it is also necessary to add chlorinated polyethylene.
1st step, the preparation of cation precast body: take fatty acid zinc 25g, be heated to 160 DEG C, be subsequently adding silicon carbide powder
25g, stirs, and after cooling, obtains modified powder；Add cationic surfactant 3g, glycerol 15g, in mixer
The most mixed, add ethylene bis stearamide 7g, chlorinated polyethylene 6g, heat up mixing, and the temperature of the mixing that heats up is 90 DEG C, heats up
The time of mixing is 25 minutes, is cooled to room temperature, obtains cation precast body, and described cationic surfactant is polyethylene
Imines；
2nd step, the preparation of anion precast body: take calcined petroleum coke 35g, anion surfactant 3g, asphalt mixtures modified by epoxy resin
Fat 15g, ethyl acetate 20g, heat up mixing, after cooling, obtains anion precast body, and described anion surfactant is poly-
Ammonium methacrylate, the temperature of the mixing that heats up is 45 DEG C, and the time of the mixing that heats up is 25 minutes；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture, dry temperature
Degree is 115 DEG C, drying time 3 hours；
4th step, by mixture and graphite powder 15g, titanium dioxide powder 3g, iron powder 5g, nikel powder 3g, methyl-silicone oil 20g, poly-carbon
Acid esters 7g mix homogeneously, after being sintered, obtains carbon/composite material of silicon carbide in vacuum sintering furnace, and sintering temperature is 1500
DEG C, sintering time is 5 hours.
Embodiment 5
Difference with embodiment 3 is: in the 3rd step, when mixing, in addition it is also necessary to add citric acid.
1st step, the preparation of cation precast body: take fatty acid zinc 25g, be heated to 160 DEG C, be subsequently adding silicon carbide powder
25g, stirs, and after cooling, obtains modified powder；Add cationic surfactant 3g, glycerol 15g, in mixer
Just mixed, add ethylene bis stearamide 7g, heat up mixing, and the temperature of the mixing that heats up is 90 DEG C, and the time of the mixing that heats up is
25 minutes, being cooled to room temperature, obtain cation precast body, described cationic surfactant is polymine；
2nd step, the preparation of anion precast body: take calcined petroleum coke 35g, anion surfactant 3g, asphalt mixtures modified by epoxy resin
Fat 15g, ethyl acetate 20g, heat up mixing, after cooling, obtains anion precast body, and described anion surfactant is poly-
Ammonium methacrylate, the temperature of the mixing that heats up is 45 DEG C, and the time of the mixing that heats up is 25 minutes；
3rd step, cation precast body, anion precast body, citric acid 5g are mixed, dry, ball milling, mixed
Thing, drying temperature is 115 DEG C, drying time 3 hours；
4th step, by mixture and graphite powder 15g, titanium dioxide powder 3g, iron powder 5g, nikel powder 3g, methyl-silicone oil 20g, poly-carbon
Acid esters 7g mix homogeneously, after being sintered, obtains carbon/composite material of silicon carbide in vacuum sintering furnace, and sintering temperature is 1500
DEG C, sintering time is 5 hours.
Performance test
Using the braking quality of the friction braking material of the MM-1000 frictional testing machine test present invention, test condition is:
Inertia 3.8kgf cm s2, than pressure 100N/cm2, linear velocity 25m/s.
Table 1 result of the test
As can be seen from the table, the brake disc composite that the present invention provides has good frictional damping performance, passes through
Embodiment 3 compares with embodiment 4 it can be seen that by adding chlorinated polyethylene in cationic prepolymer aggressiveness, can improve granule
Surface topography, makes the fracture toughness of final friction material improve.Compared it can be seen that pass through by embodiment 3 and embodiment 5
When cationic prepolymer aggressiveness and anion performed polymer mix, add organic acid, thus it is possible to vary the surface electric charge of granule, make
Covered effect is more preferable, makes the line wear rate of material decline.
Claims (9)
1. the preparation method for the carbon/carborundum friction material of aeroplane brake discs, it is characterised in that include walking as follows
Rapid:
1st step, the preparation of cation precast body: by weight, take fatty acid zinc 20～30 parts, be heated to 150～170 DEG C,
It is subsequently adding silicon carbide powder 20～30 parts, stirs, after cooling, obtain modified powder；Add cation surface activating
Agent 2～4 parts, glycerol 10～20 parts, just mixed in mixer, add ethylene bis stearamide 5～10 parts, heat up mixing, cold
But to room temperature, cation precast body is obtained；
2nd step, the preparation of anion precast body: by weight, take calcined petroleum coke 30～40 parts, anion surface active
Agent 2～4 parts, epoxy resin 10～20 parts, ethyl acetate 15～30 parts, heat up mixing, after cooling, obtains anion precast body；
3rd step, cation precast body, anion precast body are mixed, dry, ball milling, obtain mixture；
4th step, by weight, by mixture and graphite powder 10～20 parts, titanium dioxide powder 2～4 parts, iron powder 4～8 parts, nickel
Powder 2～4 parts, methyl-silicone oil 12～24 parts, Merlon 5～10 parts of mix homogeneously, after being sintered in vacuum sintering furnace,
To carbon/composite material of silicon carbide.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: described cationic surfactant is polymine.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: described anion surfactant is ammonium polymethacrylate.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 1st described step, carry out heating up mixing time, in addition it is also necessary to add chlorinated polyethylene 5 by weight～10 parts.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 3rd described step, when mixing, in addition it is also necessary to add citric acid 4 by weight～6 parts.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 1st described step, the temperature of the mixing that heats up is preferably 80～110 DEG C, and the time of the mixing that heats up is 20～30 minutes.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 2nd described step, the temperature of the mixing that heats up is preferably 40～50 DEG C, and the time of the mixing that heats up is 20～30 minutes.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 3rd described step, drying temperature is 110～120 DEG C, drying time 2～4 hours.
The preparation method of the carbon for aeroplane brake discs the most according to claim 1/carborundum friction material, its feature exists
In: in the 4th described step, sintering temperature is 1400～1600 DEG C, and sintering time is 4～6 hours.
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| CN105156526A (en) * | 2015-08-28 | 2015-12-16 | 苏州莱特复合材料有限公司 | Preparing method for carbon fiber brake pad composite materials |
| CN105772703A (en) * | 2016-03-09 | 2016-07-20 | 苏州莱特复合材料有限公司 | Preparation method of powder metallurgy friction material for deep hole drilling machine |
| CN105802580A (en) * | 2016-03-09 | 2016-07-27 | 苏州莱特复合材料有限公司 | Method for preparing carbon/silicon carbide composite friction material |
| CN106083048A (en) * | 2016-06-12 | 2016-11-09 | 马鞍山市三川机械制造有限公司 | A kind of production technology of automobile carbon pottery brake disc |
| CN106083118A (en) * | 2016-06-13 | 2016-11-09 | 孟红琳 | A kind of kiln composite block insulation material of silicon nitride combined silicon carbide and preparation method thereof |
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| CN103553616A (en) * | 2013-10-23 | 2014-02-05 | 中国科学院上海硅酸盐研究所 | In-situ growth SiC nanowire enhanced C/SiC composite material and preparation method thereof |
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