CN108223634B - Composite brake shoe - Google Patents
Composite brake shoe Download PDFInfo
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- CN108223634B CN108223634B CN201711316050.0A CN201711316050A CN108223634B CN 108223634 B CN108223634 B CN 108223634B CN 201711316050 A CN201711316050 A CN 201711316050A CN 108223634 B CN108223634 B CN 108223634B
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Classifications
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- 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
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
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- 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
- F16D2200/0069—Materials; Production methods therefor containing fibres or particles being characterised by their size
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- 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
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a composite brake shoe, and belongs to the technical field of vehicle brake materials. The composite brake shoe developed by the invention comprises an adhesive, a compound filler, a coupling agent, a defoaming agent and a curing agent, wherein the adhesive is composed of phenolic resin, petroleum resin, terpene resin and rubber, the compound filler is composed of fibrous filler, nano granular filler, nano flaky filler and oxidized microcrystalline wax, the coupling agent and the compound filler are firstly mixed by ball milling and then are stirred and mixed with the adhesive at a high speed to prepare a mixture, and then the mixture is injected into a mold, hot-pressed, cured and formed, and then is demoulded and trimmed to obtain the composite brake shoe. The composite brake shoe prepared by the technical scheme of the invention has the characteristics of excellent heat resistance and mechanical property.
Description
Technical Field
The invention discloses a composite brake shoe, and belongs to the technical field of vehicle brake materials.
Background
The composite brake shoe is an important component of a railway locomotive vehicle braking system and mainly comprises a steel backing and a friction body, wherein the friction body comprises a bonding material, a reinforcing material and a friction material. The performance of the composite brake shoe affects the maintenance cost and driving safety of the vehicle. The brake principle of the composite brake shoe is that a shoe-shaped brake shoe made of cast iron or other materials holds the tread of a wheel tightly during braking, and the wheel stops rotating through friction. In this process, the braking device converts the huge kinetic energy into heat energy to be dissipated into the atmosphere. The braking effect depends on the dissipation of the frictional heat energy. When the brake mode is used, the friction area of the brake shoe is small, and most of the heat load is born by the wheel. The higher the train speed, the greater the thermal load on the wheels during braking. If cast iron brake shoes are used, the temperature can melt the brake shoes; even if a more advanced composite brake shoe is adopted, the temperature can reach 400-450 ℃. When the temperature of the wheel tread is increased to a certain degree, the wheel tread is worn, cracked or stripped, and the service life and the driving safety are influenced. It can be seen that conventional tread shoe brakes do not accommodate the needs of high speed trains.
The basic braking modes of the train include friction braking, resistance braking, magnetic track eddy current braking, regenerative braking and the like, wherein the friction braking is widely applied and can be divided into 2 types of tread braking and disc braking, the former braking element is a brake shoe, the latter is a brake disc/brake pad (shoe) friction pair, and the 2 braking modes all require a braking friction material with high friction and excellent wear resistance. The ideal friction material should have the following properties: (1) the friction factor is moderate (0.3-0.5) and stable; (2) low sensitivity to brake operating parameters; (3) the heat fading resistance and the recovery performance are good; (4) sufficient strength; (5) the service life is long, and the aggressivity to a brake disc is low; (6) no noise and vibration during braking. With the acceleration of trains and the overloading of railway freight, higher requirements are also put on braking devices and braking materials.
Therefore, how to improve the defects of poor mechanical property and wear resistance of the traditional composite brake shoe and improve the heat resistance of the traditional composite brake shoe so as to obtain the composite brake shoe with higher comprehensive performance is a problem to be urgently solved by popularizing and applying the composite brake shoe to a wider field and meeting the industrial production requirement.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the problems of poor mechanical property, heat resistance and wear resistance of the traditional composite brake shoe, the composite brake shoe is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a composite brake shoe is composed of the following raw materials in parts by weight:
20-30 parts of adhesive
80-120 parts of compound filler
3-5 parts of coupling agent
1-5 parts of defoaming agent
3-6 parts of curing agent
The adhesive is prepared from the following raw materials in parts by weight: 60-80 parts of phenolic resin, 6-8 parts of petroleum resin, 1-3 parts of terpene resin and 20-30 parts of rubber;
the compound filler is prepared from the following raw materials in parts by weight: 20-30 parts of fibrous filler, 10-30 parts of nano granular filler, 10-20 parts of nano flaky filler and 8-10 parts of oxidized microcrystalline wax;
the preparation steps of the composite brake shoe are as follows:
(1) weighing the components according to the composition of the raw materials;
(2) firstly, ball milling and mixing a coupling agent and a compound filler to obtain a modified compound filler;
(3) sequentially adding an adhesive, a modified compound filler and a defoaming agent into a mixer, stirring and mixing at a high speed, then adding a curing agent, and continuously stirring and uniformly mixing to obtain a mixture;
(4) and injecting the mixture into a mold, hot-pressing, curing and molding, demolding, and finishing to obtain the composite brake shoe.
The coupling agent is any one of titanate coupling agent, silane coupling agent or aluminate coupling agent.
The defoaming agent is any one of emulsified silicone oil, polydimethylsiloxane or polyoxyethylene oxypropylamine ether.
The curing agent is any one of hexamethylenetetramine, isocyanate or phosphoric acid with the mass fraction of 60%.
The phenolic resin is any one of phenolic resin 2123, phenolic resin 2127 or phenolic resin 2130.
The petroleum resin is any one of C5 petroleum resin or C9 petroleum resin.
The rubber is any one of natural rubber, nitrile rubber or butyl rubber.
The preparation process of the fibrous filler comprises the following steps: according to the weight parts, 1-3 parts of nano iron powder, 2-5 parts of sodium fluoride, 30-40 parts of peach gum and 100-150 parts of water are sequentially stirred and mixed uniformly to obtain peach gum liquid, and then the glass fiber and the peach gum liquid are mixed according to the mass ratio of 1: 10-1: 15, mixing and dipping, taking out the glass fiber, drying, carbonizing, and reacting at high temperature to obtain the fibrous filler.
The nano-particle filler is any one of nano-silica, nano-zinc oxide or nano-calcium carbonate.
The nano flaky filler is nano flaky magnesium oxide and nano flaky aluminum nitride according to the mass ratio of 1: 1 are mixed.
The invention has the beneficial effects that:
(1) according to the technical scheme, fillers with different morphologies are used as system fillers, and in the hot pressing process, the fillers can gradually float up to the surface layer of the system along with molten oxidized microcrystalline wax, so that the density of the fillers in the surface layer is improved, the heat conductivity and the wear resistance of the surface layer of the product are effectively improved, the rest fillers are dispersed in the whole system, the properties of reinforcing, toughening and providing a heat conduction path are achieved, and the comprehensive mechanical property, the wear resistance and the heat resistance of the product are effectively improved;
(2) in addition, the oxidized microcrystalline wax and the silane coupling agent are used in a matching way, an organic coating layer can be formed on the surface of the compound filler, so that the surface free energy of the inorganic filler is reduced, the filler is prevented from agglomerating, the compatibility between the filler and the adhesive is effectively improved while the filler is well dispersed in a system, the filler is stably and compactly filled in the system, contact points among the fillers are increased, and a quick heat conduction path is formed in the system, so that the mechanical property and the heat resistance of the system are further improved.
Detailed Description
According to the weight parts, 1-3 parts of nano iron powder, 2-5 parts of sodium fluoride, 30-40 parts of peach gum and 100-150 parts of water are sequentially taken, the beaker is rotated into a digital readout speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed at a constant temperature of 45-55 ℃ and at a rotating speed of 300-500 r/min for 45-60 min to obtain peach gum liquid, then the glass fiber with the length of 10-30 mu m and the diameter of 1-3 mu m is mixed with the peach gum liquid according to a mass ratio of 1: 10-1: 12, the mixture is stirred and impregnated at a constant temperature of 45-50 ℃ and at a stirring rotating speed of 220-260 r/min for 2-4 h, then the glass fiber is taken out and placed in a drying oven, dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at a speed of 60-80 m, the mixture is carbonized at a temperature of 3-110 ℃ to a constant weight rate of 600 ℃/min, the mixture is stirred for a dry, the mixture is transferred into a carbonization furnace, the mixture is a thermal insulation resin, the mixture is prepared, the mixture is stirred at a thermal insulation speed of phenolic resin is stirred, the mixture is 150-10-30-10 r of a phenolic resin, the weight of the mixture is stirred, the mixture is 150 r of 200-10 min, the weight of a phenolic resin, the mixture is 150 r of a phenolic resin, the mixture is stirred, the mixture is 150 r of 200 nm-10 min, the phenolic resin, the mixture is 150 r 10-10 min, the mixture is prepared, the phenolic resin, the mixture is prepared, the phenolic resin is prepared, the mixture is prepared, the phenolic resin is prepared, the phenolic resin.
Example 1
According to the weight parts, 3 parts of nano iron powder, 5 parts of sodium fluoride, 40 parts of peach gum and 150 parts of water are sequentially taken and poured into a beaker, the beaker is transferred into a digital display speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 55 ℃ and the rotating speed is 500r/min to obtain peach gum solution, then glass fiber with the length of 30 mu m and the diameter of 3 mu m and the peach gum solution are mixed according to the mass ratio of 1: 12, the mixture is stirred and impregnated for 4h at a constant temperature under the conditions that the temperature is 50 ℃ and the stirring rotating speed is 260r/min, then the glass fiber is taken out and placed in a drying oven, the dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at the speed of 80m L/min, the mixture is heated to 680 ℃ at the speed of 5 ℃/min under the argon protection state, the constant temperature carbonization for 4h, the mixture is continuously heated to 1450 ℃ at the speed of the temperature, the thermal insulation and carbonized material is obtained, the mixture is mixed with the nano silicon oil, the filler, the mixture is mixed, the mixture is prepared by adding the nano silicon oil, the nano resin, the nano silicone oil, the nano resin, the mixture is stirred, the mixture is prepared, the mixture is prepared by adding the high speed of 200 r of the high speed of 200 parts of the nano silicone oil, the high speed of 200 r, the nano silicone oil, the high speed is stirred and the high speed is stirred, the high speed of 200 r, the nano silicone oil, the high speed is stirred, the high speed of the high speed stirring, the high speed of the high speed stirring of 200 r, the high speed stirring of 200.
Example 2
According to the weight portion, 30 portions of nano granular filler, 20 portions of nano flaky filler and 10 portions of oxidized microcrystalline wax are sequentially taken, and are stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 100 ℃ and the rotating speed is 500r/min, so that the compound filler is obtained; according to the weight portion, 30 portions of adhesive, 120 portions of compound filler, 5 portions of coupling agent, 5 portions of defoaming agent and 6 portions of curing agent are taken in sequence, the coupling agent and the compound filler are poured into a ball milling tank, and the mass ratio of ball materials is 30: 1 adding zirconia balls for grinding, performing ball milling and mixing for 4 hours to obtain modified compound filler, sequentially adding an adhesive, the modified compound filler and a defoaming agent into a mixer, stirring and mixing at a high speed for 60 minutes under the condition that the rotating speed is 1800r/min, adding a curing agent into the mixer in a stirring state, continuously stirring and mixing for 30 minutes, and discharging to obtain a mixture; and then injecting the mixture into a mold, carrying out hot-pressing curing molding, demolding and manual trimming under the conditions that the temperature is 200 ℃ and the pressure is 280MPa, thus obtaining the composite brake shoe. The adhesive is prepared from the following raw materials in parts by weight: 80 parts of phenolic resin, 8 parts of petroleum resin, 3 parts of terpene resin and 30 parts of rubber. The coupling agent is a titanate coupling agent. The defoaming agent is emulsified silicone oil. The curing agent is hexamethylenetetramine. The phenolic resin is phenolic resin 2123. The petroleum resin is C5 petroleum resin. The rubber is natural rubber. The nano-particle filler is nano-silica. The nano flaky filler is nano flaky magnesium oxide and nano flaky aluminum nitride according to the mass ratio of 1: 1 are mixed.
Example 3
According to the weight portion, 3 portions of nano iron powder, 5 portions of sodium fluoride, 40 portions of peach gum and 150 portions of water are sequentially taken and poured into a beaker, the beaker is transferred into a digital display speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 55 ℃ and the rotating speed is 500r/min to obtain peach gum solution, then glass fiber with the length of 30 mu m and the diameter of 3 mu m and the peach gum solution are mixed according to the mass ratio of 1: 12, the mixture is stirred and impregnated for 4h at a constant temperature of 50 ℃ and the stirring rotating speed of 260r/min, then the glass fiber is taken out and placed in a drying oven, the dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at the speed of 80m L/min, the mixture is heated to 680 ℃ at the speed of 5 ℃/min under the argon protection state, the mixture is heated to the constant temperature and carbonized for 4h, the mixture is prepared by a phenolic resin modified resin, the mixture is prepared by adding the phenolic resin, the modified phenolic resin is prepared by adding the phenolic resin, the modified phenolic resin is prepared by the modified phenolic resin, the modified phenolic resin is prepared by the steps of the phenolic resin, the modified phenolic resin is prepared by adding the phenolic resin, the modified phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by the steps of the phenolic resin, the steps of the phenolic resin are sequentially including the steps of 10 parts of the steps of the phenolic resin, the steps of 10 parts of the phenolic resin, the.
Example 4
According to the weight portion, 3 portions of nano iron powder, 5 portions of sodium fluoride, 40 portions of peach gum and 150 portions of water are sequentially taken and poured into a beaker, the beaker is transferred into a digital display speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 55 ℃ and the rotating speed is 500r/min to obtain peach gum solution, then glass fiber with the length of 30 mu m and the diameter of 3 mu m and the peach gum solution are mixed according to the mass ratio of 1: 12, the mixture is stirred and impregnated for 4h at a constant temperature of 50 ℃ and the stirring rotating speed of 260r/min, then the glass fiber is taken out and placed in a drying oven, the dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at the speed of 80m L/min, the mixture is heated to 680 ℃ at the speed of 5 ℃/min and is thermally insulated and carbonized for 4h, the mixture is continuously heated to 1450 ℃ at the speed of 10 ℃/min, the thermal insulation reaction is carried out for 4h, the mixture is obtained, the fiber filler is obtained, the mixture is mixed with the mixture, the mixture is prepared by adding the thermal insulation and the modified phenolic resin, the modified filler, the modified phenolic resin is prepared by adding the modified phenolic resin, the modified phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by adding the phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin is prepared by the phenolic resin, the phenolic resin prepared by the method of the.
Example 5
According to the weight portion, 3 portions of nano iron powder, 5 portions of sodium fluoride, 40 portions of peach gum and 150 portions of water are sequentially taken and poured into a beaker, the beaker is transferred into a digital display speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 55 ℃ and the rotating speed is 500r/min to obtain peach gum solution, then glass fiber with the length of 30 mu m and the diameter of 3 mu m and the peach gum solution are mixed according to the mass ratio of 1: 12, the mixture is stirred and impregnated for 4h at a constant temperature of 50 ℃ and the stirring rotating speed of 260r/min, then the glass fiber is taken out and placed in a drying oven, the dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at the speed of 80m L/min, the mixture is heated to 680 ℃ at the speed of 5 ℃/min and is thermally insulated and carbonized for 4h, the mixture is continuously heated to 1450 ℃ at the speed of 10 ℃/min, the thermal insulation reaction is carried out for 4h, the mixture is obtained, the fiber filler is obtained, the mixture is mixed with the mixture, the mixture is prepared by adding the nano silicon oil-silicon-based on the speed modification resin, the mixture is mixed filler, the mixture is stirred and the mixture, the mixture is stirred at the speed of the mixture, the mixture is stirred for a high-speed of the high-speed stirring-stirring process, the high-stirring process, the high-stirring process, the high-stirring.
Example 6
According to the weight portion, 3 portions of nano iron powder, 5 portions of sodium fluoride, 40 portions of peach gum and 150 portions of water are sequentially taken and poured into a beaker, the beaker is transferred into a digital display speed measurement constant temperature magnetic stirrer, the mixture is stirred and mixed for 60min at a constant temperature under the conditions that the temperature is 55 ℃ and the rotating speed is 500r/min to obtain peach gum solution, then glass fiber with the length of 30 mu m and the diameter of 3 mu m and the peach gum solution are mixed according to the mass ratio of 1: 12, the mixture is stirred and impregnated for 4h at a constant temperature under the conditions that the temperature is 50 ℃ and the stirring rotating speed is 260r/min, then the glass fiber is taken out and placed in a drying oven, the dried glass fiber is obtained, the dried glass fiber is moved into a carbonization furnace, argon gas is introduced into the furnace at the speed of 80m L/min, the mixture is heated to 680 ℃ under the speed of 5 ℃/min, the mixture is thermally insulated and carbonized for 4h, the mixture is continuously heated to 1450 ℃ at the speed of 10 ℃/min, the mixture is cooled to 1800 ℃ and then mixed with the filler, the mixture is prepared, the filler, the mixture is prepared by adding the nano silicon oxide resin, the nano silicon dioxide, the filler, the mixture is prepared by a high speed of a high speed ball grinding, the high speed of a high speed grinding speed of a high speed grinding machine, the high speed grinding speed of 10 min, the high speed grinding speed of a high speed grinding speed of 10 min, the grinding speed of a high speed grinding speed of 10 min, the high speed grinding speed of a high speed grinding speed of 10 min, the high speed grinding speed of a grinding speed of a grinding machine, the grinding speed of a grinding speed of a grinding machine, the grinding speed.
Comparative example: synthetic brake shoes manufactured by Beijing technology Ltd.
The performance of the composite brake shoe obtained in examples 1 to 6 and the comparative product was tested by the following specific test methods:
1. heat resistance: thermogravimetric (TG) analysis: testing by using a DSC-2 type thermal analyzer in an air atmosphere at a temperature rise rate of 20 ℃/min; detecting the temperature under the condition of 10% weight loss;
2. mechanical properties: compressive strength: testing the test piece according to GB/T1041, wherein the speed is 1mm/min, and the deformation is 2 mm; impact strength: testing according to GB/T1043;
3. wear resistance: a1: 3 brake power test bench was used to simulate a 33t axle weight and a 2t brake pressure. Abrasion loss: and calculating the abrasion loss by using the mass difference before and after the friction sample braking test.
The specific test results of heat resistance are shown in table 1:
TABLE 1
The specific test results of mechanical properties are shown in table 2:
TABLE 2
The specific test results of wear resistance are shown in table 3:
TABLE 3
As can be seen from the detection results in tables 1, 2 and 3, the composite brake shoe prepared by the technical scheme of the invention has the characteristics of excellent heat resistance and mechanical property, and meanwhile, the wear resistance is also improved, so that the composite brake shoe has a wide prospect in the development of the vehicle braking industry.
Claims (10)
1. A composite brake shoe characterized by: the composite material is prepared from the following raw materials in parts by weight:
20-30 parts of adhesive
80-120 parts of compound filler
3-5 parts of coupling agent
1-5 parts of defoaming agent
3-6 parts of curing agent
The adhesive is prepared from the following raw materials in parts by weight: 60-80 parts of phenolic resin, 6-8 parts of petroleum resin, 1-3 parts of terpene resin and 20-30 parts of rubber;
the compound filler is prepared from the following raw materials in parts by weight: 20-30 parts of fibrous filler, 10-30 parts of nano granular filler, 10-20 parts of nano flaky filler and 8-10 parts of oxidized microcrystalline wax;
the preparation steps of the composite brake shoe are as follows:
(1) weighing the components according to the composition of the raw materials;
(2) firstly, ball milling and mixing a coupling agent and a compound filler to obtain a modified compound filler;
(3) sequentially adding an adhesive, a modified compound filler and a defoaming agent into a mixer, stirring and mixing at a high speed, then adding a curing agent, and continuously stirring and uniformly mixing to obtain a mixture;
(4) and injecting the mixture into a mold, hot-pressing, curing and molding, demolding, and finishing to obtain the composite brake shoe.
2. A composite brake shoe according to claim 1 wherein: the coupling agent is any one of titanate coupling agent, silane coupling agent or aluminate coupling agent.
3. A composite brake shoe according to claim 1 wherein: the defoaming agent is any one of emulsified silicone oil, polydimethylsiloxane or polyoxyethylene oxypropylamine ether.
4. A composite brake shoe according to claim 1 wherein: the curing agent is any one of hexamethylenetetramine, isocyanate or phosphoric acid with the mass fraction of 60%.
5. A composite brake shoe according to claim 1 wherein: the phenolic resin is any one of phenolic resin 2123, phenolic resin 2127 or phenolic resin 2130.
6. A composite brake shoe according to claim 1 wherein: the petroleum resin is any one of C5 petroleum resin or C9 petroleum resin.
7. A composite brake shoe according to claim 1 wherein: the rubber is any one of natural rubber, nitrile rubber or butyl rubber.
8. A composite brake shoe according to claim 1 wherein: the preparation process of the fibrous filler comprises the following steps: according to the weight parts, 1-3 parts of nano iron powder, 2-5 parts of sodium fluoride, 30-40 parts of peach gum and 100-150 parts of water are sequentially stirred and mixed uniformly to obtain peach gum liquid, and then the glass fiber and the peach gum liquid are mixed according to the mass ratio of 1: 10-1: 15, mixing and dipping, taking out the glass fiber, drying, carbonizing, and reacting at high temperature to obtain the fibrous filler.
9. A composite brake shoe according to claim 1 wherein: the nano-particle filler is any one of nano-silica, nano-zinc oxide or nano-calcium carbonate.
10. A composite brake shoe according to claim 1 wherein: the nano flaky filler is nano flaky magnesium oxide and nano flaky aluminum nitride according to the mass ratio of 1: 1 are mixed.
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| CN201711316050.0A CN108223634B (en) | 2017-12-12 | 2017-12-12 | Composite brake shoe |
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|---|---|---|---|
| CN201711316050.0A CN108223634B (en) | 2017-12-12 | 2017-12-12 | Composite brake shoe |
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| CN108223634B true CN108223634B (en) | 2020-07-31 |
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| CN108895102B (en) * | 2018-07-11 | 2020-06-02 | 山西罗克森机械设备有限责任公司 | Preparation method of high-temperature-resistant wear-resistant brake pad |
| CN112594308B (en) * | 2020-12-11 | 2024-03-12 | 黄山菲英汽车零部件有限公司 | Preparation method of high-performance automobile brake pad |
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