CN112240365B - Wear-resistant and dust-proof disc type friction plate and preparation method and application thereof - Google Patents

Wear-resistant and dust-proof disc type friction plate and preparation method and application thereof Download PDF

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Publication number
CN112240365B
CN112240365B CN202011110237.7A CN202011110237A CN112240365B CN 112240365 B CN112240365 B CN 112240365B CN 202011110237 A CN202011110237 A CN 202011110237A CN 112240365 B CN112240365 B CN 112240365B
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parts
wear
dust
resistant
friction
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CN112240365A (en
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余志杰
徐可
张文周
宁小丹
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Hubei Feilong Friction & Sealing Materials Co ltd
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Hubei Feilong Friction & Sealing Materials Co ltd
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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
    • F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/002—Combination of different friction materials
    • 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
    • F16D2069/005—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces having a layered structure
    • 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
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0052—Carbon
    • 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
    • F16D2200/0065—Inorganic, e.g. non-asbestos mineral fibres
    • 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
    • F16D2200/0078—Materials; Production methods therefor laminated
    • 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
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0023—Shaping by pressure

Abstract

The invention relates to the technical field of composite materials, and particularly discloses a wear-resistant and dust-proof disc type friction plate and a preparation method and application thereof, wherein the wear-resistant and dust-proof disc type friction plate comprises a bottom layer, a latticed framework, a friction layer and a dust-proof and wear-resistant piece, the latticed framework is covered by the friction material in a wrapping manner, and the dust-proof and wear-resistant piece penetrates through the friction layer; the preparation method sequentially comprises the following steps: preparing a precast block; hot-press forming; heat treatment; grinding and drilling. The friction plate has the advantages of dust prevention, long service life, stable friction coefficient, better wear resistance, excellent impact strength, compressive strength, internal shear strength and the like, solves the problem that the conventional disc brake pad cannot reduce the production cost while ensuring less dust, good wear resistance and long service life and meeting the environmental protection requirement, and has wide market prospect.

Description

Wear-resistant and dust-proof disc type friction plate and preparation method and application thereof
Technical Field
The invention relates to the technical field of composite materials, in particular to a wear-resistant and dust-proof disc type friction plate and a preparation method and application thereof.
Background
Friction plates, as an assembly consisting of a core plate and a friction lining or friction material layer, are widely used in various fields such as mechanical engineering, mechanical parts and clutches. For example, a friction plate is needed in an automobile, and the friction plate and a brake disc rub against each other in the automobile braking process, so that the braking effect can be achieved.
However, in the mutual friction process of the friction plate and the brake disc, the friction material layer is continuously worn, and the friction plate can generate a large amount of dust when being worn, so that the service life of the friction plate is shortened. At present, most disc brake pads in the prior art are made of semimetal or low-metal materials, and are characterized by good heat resistance, high absorption function rate per unit area and high heat conductivity coefficient, and can adapt to the braking working condition of an automobile during high-speed and high-load running. However, in actual use, there are the following disadvantages: the disc brake pad in the prior art has the defect of more dust falling in the automobile braking process. The ceramic disc type piece is not adsorbed when falling ash and is scattered after friction, and the material has the defects of high cost and environmental pollution. In addition, the production process of the friction plate generates a large amount of dust and drill cuttings, which usually account for 6-10% of the mass ratio of a finished product, and meanwhile, environmental pollution and higher waste treatment cost are brought. Therefore, how to provide a disc brake pad with less abrasion dust, good wear resistance, long service life and meeting the environmental protection requirement, and reduce the production cost is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The embodiment of the invention aims to provide a wear-resistant and dust-proof disc type friction plate, and aims to solve the problems that the existing disc type brake pad proposed in the background technology cannot ensure less grinding dust, good wear resistance and long service life, meets the environmental protection requirement and simultaneously reduces the production cost.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the utility model provides a wear-resisting dust-protection type dish friction disc, includes steel backing, bottom and sets up the frictional layer of bottom one side, wear-resisting dust-protection type dish friction disc still includes:
the latticed framework is arranged between the bottom layer and the friction layer and is covered by the bottom layer and the friction layer in a wrapping manner; wherein, the friction layer comprises the following raw materials: polyvinyl alcohol modified phenolic resin, nitrile rubber powder, friction powder, steel fiber, synthetic graphite, petroleum coke carbon powder, antimony sulfide, aramid fiber, potassium titanate, calcium carbonate and barium sulfate;
the dustproof wear-resistant pieces are arranged in a plurality of numbers and respectively penetrate through the friction layer and do not penetrate through the latticed framework.
In the embodiment of the invention, the wear-resistant and dust-proof disk type friction plate is designed into a multilayer friction plate through the latticed framework, and the dust-proof and wear-resistant piece penetrates through the friction layer; the formula system with the dust and the drill cuttings in the workshop production process as main raw materials on the bottom layer reduces production cost and pollution, and overcomes the defects of large dust abrasion and poor wear resistance of the conventional brake pad.
As a further scheme of the invention: the friction layer comprises the following raw materials in parts by weight: 15-25 parts of polyvinyl alcohol modified phenolic resin, 1.5-6 parts of nitrile rubber powder, 1.8-4 parts of friction powder, 14-20 parts of steel fiber, 3.7-8 parts of synthetic graphite, 3.4-7 parts of petroleum coke powder, 1-3 parts of antimony sulfide, 0.5-2 parts of aramid fiber, 2.5-3.2 parts of potassium titanate, 6-12 parts of calcium carbonate and 30-40 parts of barium sulfate.
As a still further scheme of the invention: the bottom layer comprises the following raw materials in parts by weight: 5-15 parts of phenolic resin, 30-50 parts of grinding dust (particularly dust and drilling cuttings in the workshop production process), 10-15 parts of mineral fiber, 10-20 parts of barium sulfate, 3-5 parts of glass fiber and 5-10 parts of calcium carbonate.
As a still further scheme of the invention: the latticed framework is made of high-temperature-resistant latticed cloth, and the shape of the latticed framework is consistent with the planar shape of the wear-resistant dustproof disc type friction plate.
As a still further scheme of the invention: the dustproof wear-resistant part is a rod-shaped material formed by hot pressing, and specifically comprises the following raw materials in parts by weight: 36-42 parts of phenolic resin, 0.5-2 parts of molybdenum disulfide, 2-6 parts of graphite, 12-18 parts of high-temperature resistant hot melt adhesive (polyamide hot melt adhesive) and 35-40 parts of barium sulfate.
Another object of an embodiment of the present invention is to provide a method for manufacturing a wear-resistant and dust-proof disc friction plate, including the following steps:
1) weighing and uniformly mixing the raw materials according to the raw material proportion of the bottom layer, adding the uniformly mixed bottom layer into a preforming mold, putting the surface into a latticed framework after the surface is uniform by using a scraper, adding a mixed friction layer (obtained by weighing and uniformly mixing the raw materials according to the raw material proportion of the friction layer) into the preforming mold, making the surface uniform by using the scraper, and pressing down by using a pressing head in clearance fit with the preforming mold to prepare a precast block;
2) and putting the precast block and the steel backing into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 155-165 ℃, the pressure maintaining time is 8-12min, and the friction material product is obtained after demoulding;
3) putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 6-10h at the temperature of 155-;
4) and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting a dustproof wear-resistant piece into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
Another object of the embodiment of the present invention is to provide a wear-resistant and dust-proof disc friction plate prepared by the above preparation method of a wear-resistant and dust-proof disc friction plate.
Another object of the embodiment of the present invention is to provide an application of the wear-resistant and dust-proof disk friction plate in the processing of automobile parts.
Compared with the prior art, the invention has the beneficial effects that:
the wear-resistant and dust-proof disc type friction plate provided by the embodiment of the invention comprises a steel backing, a bottom layer and a friction layer arranged on one side of the bottom layer, wherein a latticed framework is arranged between the bottom layer and the friction layer, a plurality of dust-proof and wear-resistant pieces respectively penetrate through the friction layer and do not penetrate through the latticed framework, the wear-resistant and dust-proof disc type friction plate is designed into a multilayer friction plate through the latticed framework, the dust-proof and wear-resistant pieces penetrate through the friction layer, meanwhile, the production cost is reduced and the pollution is reduced through a formula system in which dust and drill cuttings in a workshop production process are used as main raw materials in the bottom layer, and the defects of large dust-grinding and non-wear resistance of the existing brake plate are overcome; the provided preparation method is high in environmental protection, and the prepared wear-resistant and dust-proof disc type friction plate has a dust-proof function, is long in service life, and has the advantages of stable friction coefficient, good wear resistance, excellent impact strength, compressive strength, internal shear strength and the like; the friction material uses the waste dust and drill cuttings in the production process, so that the environment is improved; the strength of the bottom layer is ensured by the latticed framework; the dustproof wear-resistant part is attached to the friction surface in the use process of the friction plate to enable the friction plate to have certain adhesion, and the grinding dust generated by friction is attached to the surface to play a dustproof role, so that the problem that the existing disc brake pad cannot reduce the production cost while ensuring less grinding dust, good wear resistance, long service life and meeting the environmental protection requirement is solved, and the dustproof wear-resistant disc brake pad has a wide market prospect.
Drawings
Fig. 1 is a schematic perspective view of a finished wear-resistant and dust-proof disc friction plate according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a wear-resistant and dust-proof disc friction plate according to an embodiment of the present invention.
In the figure: 1-a bottom layer; 2-a friction layer; 3-a latticed framework; 4-dustproof wear-resistant parts; 5-steel backing; 6-installing the through hole.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In order to make the technical solution of the present invention clearer, process steps and device structures well known in the art are omitted here.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1-2, a structure diagram of a wear-resistant and dust-proof disc friction plate according to an embodiment of the present invention is provided, where the wear-resistant and dust-proof disc friction plate includes a steel back 5, a bottom layer 1, and a friction layer 2 disposed on one side of the bottom layer 1, and the wear-resistant and dust-proof disc friction plate further includes:
the latticed framework 3 is arranged between the bottom layer 1 and the friction layer 2, and the latticed framework 3 is covered by the bottom layer 1 and the friction layer 2; wherein, the friction layer 2 comprises the following raw materials: polyvinyl alcohol modified phenolic resin (available commercially available products can be used, and specific types are selected according to requirements, but are not limited herein, and for example, polyvinyl acetal modified phenolic resin), nitrile rubber powder, friction powder, steel fiber, synthetic graphite, petroleum coke carbon powder, antimony sulfide, aramid fiber, potassium titanate, calcium carbonate, and barium sulfate;
the dustproof wear-resistant pieces 4 are arranged in a plurality and respectively penetrate through the friction layer 2 and do not penetrate through the latticed framework 3.
As another preferred embodiment of the present invention, the steel back 5 is used to connect with a side of the bottom layer 1 away from the latticed skeleton 3, and a plurality of mounting through holes 6 for mounting the dust-proof wear-resistant pieces 4 are correspondingly arranged on a side of the friction layer 2 away from the latticed skeleton 3.
In the embodiment of the invention, the wear-resistant and dust-proof disc type friction plate is designed into a multilayer friction plate through the latticed framework 3, and the dust-proof and wear-resistant piece 4 penetrates through the friction layer 2; the formula system with the dust and the drill cuttings in the workshop production process as main raw materials is adopted for the bottom layer 1, so that the production cost is reduced, the pollution is reduced, and the defects of large dust abrasion and poor wear resistance of the conventional brake pad are overcome.
In another preferred embodiment of the present invention, the shape of the base layer 1 is identical to the shape of the friction layer 2, and the base layer has a planar shape.
As a further preferred embodiment of the invention, the thickness of the bottom layer 1 is 1mm to 5mm, such as 1mm, 3mm or 5 mm. Preferably 3mm to 5 mm.
As another preferred embodiment of the invention, the thickness of the friction layer 2 is 8mm to 12mm, such as 8mm, 10mm or 12 mm.
As another preferred embodiment of the invention, the thickness of the latticed framework 3 is 0.5mm-1mm, and the dustproof wear-resistant pieces 4 with the diameters of 2-6mm penetrate through the friction layer 2.
As another preferred embodiment of the present invention, both corners of the friction layer 2 are chamfered.
In another preferred embodiment of the present invention, the dustproof and wearable element 4 is a cylinder with a diameter of 2-5mm, such as 2mm, 3mm, 5mm, and 1-3 in number, and a thickness of 8mm-12mm, and is consistent with the thickness of the friction layer 2, the dustproof and wearable element 4 penetrates through the friction layer 2, and rubs together with the friction layer 2 during braking process, and adheres to the friction surface to make it have certain adhesion, and the dust generated by rubbing adheres to the surface to play a dustproof role.
As another preferred embodiment of the present invention, the friction layer 2 comprises the following raw materials in parts by weight: 15-25 parts of polyvinyl alcohol modified phenolic resin, 1.5-6 parts of nitrile rubber powder, 1.8-4 parts of friction powder, 14-20 parts of steel fiber, 3.7-8 parts of synthetic graphite, 3.4-7 parts of petroleum coke powder, 1-3 parts of antimony sulfide, 0.5-2 parts of aramid fiber, 2.5-3.2 parts of potassium titanate, 6-12 parts of calcium carbonate and 30-40 parts of barium sulfate.
As another preferred embodiment of the invention, the preparation method of the friction layer 2 comprises the steps of weighing 15-25 parts of polyvinyl alcohol modified phenolic resin, 1.5-6 parts of nitrile rubber powder, 1.8-4 parts of friction powder, 14-20 parts of steel fiber, 3.7-8 parts of synthetic graphite, 3.4-7 parts of petroleum coke powder, 1-3 parts of antimony sulfide, 0.5-2 parts of aramid fiber, 2.5-3.2 parts of potassium titanate, 6-12 parts of calcium carbonate and 30-40 parts of barium sulfate according to the proportion, and uniformly mixing.
In another preferred embodiment of the present invention, the latticed skeleton 3 is a high temperature resistant latticed fabric, and the shape of the latticed skeleton 3 is consistent with the planar shape of the wear-resistant and dust-proof disc friction plate. Specifically, the latticed framework 3 is formed by cutting high-temperature-resistant latticed cloth according to the plane shape of the wear-resistant dustproof disc type friction plate, and the organic characteristics of the framework material are greatly improved through the treatment of the surface treatment agent, so that the latticed framework 3 is firmly bonded with other friction composite materials.
As another preferred embodiment of the present invention, the bottom layer 1 comprises the following raw materials in parts by weight: 5-15 parts of phenolic resin, 30-50 parts of grinding dust (particularly dust and drilling cuttings in the workshop production process), 10-15 parts of mineral fiber, 10-20 parts of barium sulfate, 3-5 parts of glass fiber and 5-10 parts of calcium carbonate.
As another preferred embodiment of the invention, the bottom layer 1 and the friction layer 2 are two different formulas, the formula of the bottom layer 1 adopts a formula system taking dust and drill cuttings generated during grinding in the process of producing the wear-resistant and dust-proof disc type friction plate as main raw materials, and the grid-shaped framework 3 is matched to ensure that the friction plate has excellent mechanical properties, reduce the production cost and reduce the pollution; the formula of the friction layer 2 adopts an internationally leading asbestos-free formula system, so that the product is ensured to have excellent frictional wear characteristics.
As another preferred embodiment of the present invention, the dustproof wear-resistant member 4 is a rod-shaped material formed by hot pressing, and specifically comprises the following raw materials in parts by weight: 36-42 parts of phenolic resin, 0.5-2 parts of molybdenum disulfide, 2-6 parts of graphite, 12-18 parts of high-temperature resistant hot melt adhesive (polyamide hot melt adhesive) and 35-40 parts of barium sulfate.
As another preferred embodiment of the invention, the raw materials of the high-temperature resistant hot melt adhesive comprise polyamide resin and sebacic acid, and the high-temperature resistant hot melt adhesive is prepared by taking the polyamide resin as a main matrix and adding a certain proportion of sebacic acid to adjust the softening point, wherein the proportion is that the polyamide resin is as follows: the weight ratio of the sebacic acid is 1: 0.8-1: 1.2, the softening point of the high-temperature resistant hot melt adhesive is 220-290 ℃.
The embodiment of the invention also provides a preparation method of the wear-resistant dustproof disc type friction plate, which comprises the following steps:
1) weighing and uniformly mixing the raw materials according to the raw material proportion of the bottom layer 1, adding the uniformly mixed bottom layer 1 into a preforming mold, putting the surface into a latticed framework 3 after the surface is uniform by using a scraper, adding a mixed friction layer 2 (obtained by weighing and uniformly mixing the raw materials according to the raw material proportion of the friction layer 2) into the preforming mold, uniformly mixing the surface by using the scraper, and pressing down by using a pressing head in clearance fit with the preforming mold to prepare a precast block;
2) and putting the precast block and the steel backing 5 into a hot-pressing die for hot-pressing forming, wherein the parameters of the hot-pressing forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 155-165 ℃, the pressure maintaining time is 8-12min, and the friction material product is obtained after demoulding;
3) putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 6-10h at the temperature of 155-;
4) and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
As another preferred embodiment of the present invention, in the method for manufacturing the wear-resistant and dust-proof disc friction plate, the temperature of the preforming mold is maintained at 25 ℃ to 45 ℃.
Preferably, the preparation method of the wear-resistant dust-proof disc friction plate comprises the following steps:
step 1: weighing 5-15 parts of phenolic resin, 30-50 parts of grinding dust, 10-15 parts of mineral fiber, 10-20 parts of barium sulfate, 3-5 parts of glass fiber and 5-10 parts of calcium carbonate according to the raw material proportion of a bottom layer 1, uniformly mixing to obtain a mixed bottom layer 1, adding the mixed bottom layer 1 into a preforming mold, uniformly placing the mixed bottom layer into a latticed framework 3 after the surface is uniformly distributed by using a scraper, adding a mixed friction layer 2 into the preforming mold, wherein 15-25 parts of polyvinyl alcohol modified phenolic resin, 1.5-6 parts of butadiene-acrylonitrile rubber powder, 1.8-4 parts of friction powder, 14-20 parts of steel fiber, 3.7-8 parts of synthetic graphite, 3.4-7 parts of petroleum coke powder, 1-3 parts of antimony sulfide, 0.5-2 parts of aramid fiber and 2.5-3.2 parts of potassium titanate are weighed according to the raw material proportion of the friction layer 2, 6-12 parts of calcium carbonate and 30-40 parts of barium sulfate are uniformly mixed to obtain a mixed friction layer 2), the surface is uniform by using a scraper, and a pressure head in clearance fit with a preforming die is used for pressing down to prepare a precast block; keeping the temperature of the preforming mold at 25-45 ℃;
step 2: putting the precast block and the steel backing 5 into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 160 ℃, the pressure maintaining time is 10min, and the friction material product is obtained after demoulding;
and step 3: putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 8 hours at 160 ℃, and naturally cooling to obtain a friction block;
and 4, step 4: and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
The embodiment of the invention also provides the wear-resistant and dust-proof disc type friction plate prepared by the preparation method of the wear-resistant and dust-proof disc type friction plate.
The embodiment of the invention also provides application of the wear-resistant and dust-proof disk type friction plate in automobile part machining.
The technical effects of the wear-resistant and dust-proof disc friction plate of the present invention will be further described below by referring to specific examples.
Example 1
The utility model provides a wear-resisting dust-protection disk friction disc, is including steel backing 5, bottom 1, latticed skeleton 3, frictional layer 2 and dustproof wearing parts 4, latticed skeleton 3 is covered by bottom 1 and frictional layer 2 package clamp, and dustproof wearing parts 4 run through in frictional layer 2, frictional layer 2 is including following constitution raw materials:
20 parts of polyvinyl alcohol modified phenolic resin, 4 parts of nitrile rubber powder, 2 parts of friction powder, 10 parts of steel fiber, 4 parts of synthetic graphite, 5 parts of petroleum coke powder, 2 parts of antimony sulfide, 2 parts of aramid fiber, 3 parts of potassium titanate, 13 parts of calcium carbonate and 35 parts of barium sulfate.
Further, the bottom layer 1 comprises the following raw materials:
10 parts of phenolic resin, 40 parts of grinding dust, 15 parts of mineral fiber, 20 parts of barium sulfate, 5 parts of glass fiber and 10 parts of calcium carbonate.
Furthermore, the latticed framework 3 is formed by cutting high-temperature-resistant chemical fiber latticed cloth according to the plane shape of the brake pad, and the organic characteristics of the framework material are greatly improved through the treatment of a special surface treatment agent, so that the firm adhesion of the latticed framework 3 and the friction composite material is ensured.
Further, the dustproof wear-resistant part 4 is a rod-shaped material formed by hot pressing, and comprises the following raw materials:
40 parts of phenolic resin, 1 part of molybdenum disulfide, 4 parts of graphite, 20 parts of high-temperature-resistant hot melt adhesive and 35 parts of barium sulfate.
Furthermore, the high-temperature-resistant hot melt adhesive takes polyamide resin as a main matrix, and sebacic acid in a certain proportion is added to adjust the softening point, wherein the proportion is 1: 1.2, the softening point is 240-280 ℃.
Further, the number of the used dustproof wear-resistant parts 4 is 3.
In this embodiment, the preparation method of the wear-resistant and dust-proof disc friction plate is as follows:
step 1: weighing phenolic resin, grinding dust, mineral fiber, barium sulfate, glass fiber and calcium carbonate according to the raw material proportion of the bottom layer 1, uniformly mixing to obtain a mixed bottom layer 1, then adding the mixed bottom layer 1 into a preforming mold, putting the surface into a latticed framework 3 after the surface is uniform by using a scraper, then adding a mixed friction layer 2 (weighing polyvinyl alcohol modified phenolic resin, nitrile rubber powder, friction powder, steel fiber, synthetic graphite, petroleum coke carbon powder, antimony sulfide, aramid fiber, potassium titanate, calcium carbonate and barium sulfate according to the raw material proportion of the friction layer 2, uniformly mixing to obtain a mixed friction layer 2), using the scraper to make the surface uniform, and pressing down by using a pressing head in clearance fit with the mold to prepare a prefabricated block; keeping the temperature of the preforming mold at 25-45 ℃;
step 2: putting the precast block and the steel backing 5 into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 160 ℃, the pressure maintaining time is 10min, and the friction material product is obtained after demoulding;
and step 3: putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 8 hours at 160 ℃, and naturally cooling to obtain a friction block;
and 4, step 4: and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
Example 2
The utility model provides a wear-resisting dust-protection disk friction disc, is including steel backing 5, bottom 1, latticed skeleton 3, frictional layer 2 and dustproof wearing parts 4, latticed skeleton 3 is covered by bottom 1 and frictional layer 2 package clamp, and dustproof wearing parts 4 run through in frictional layer 2, frictional layer 2 is including following constitution raw materials:
20 parts of polyvinyl alcohol modified phenolic resin, 4 parts of nitrile rubber powder, 2 parts of friction powder, 14 parts of steel fiber, 4 parts of synthetic graphite, 5 parts of petroleum coke powder, 2 parts of antimony sulfide, 1 part of aramid fiber, 3 parts of potassium titanate, 10 parts of calcium carbonate and 35 parts of barium sulfate.
Further, the bottom layer 1 comprises the following raw materials:
5 parts of phenolic resin, 50 parts of grinding dust, 15 parts of mineral fiber, 20 parts of barium sulfate, 3 parts of glass fiber and 7 parts of calcium carbonate.
Furthermore, the latticed framework 3 is formed by cutting high-temperature-resistant chemical fiber latticed cloth according to the plane shape of the brake pad, and the organic characteristics of the framework material are greatly improved through the treatment of a special surface treatment agent, so that the firm adhesion of the latticed framework 3 and the friction composite material is ensured.
Further, the dustproof wear-resistant part 4 is a rod-shaped material formed by hot pressing, and comprises the following raw materials:
40 parts of phenolic resin, 1 part of molybdenum disulfide, 4 parts of graphite, 20 parts of high-temperature-resistant hot melt adhesive and 35 parts of barium sulfate.
Furthermore, the high-temperature-resistant hot melt adhesive takes polyamide resin as a main matrix, and sebacic acid in a certain proportion is added to adjust the softening point, wherein the proportion is 1: 1.5, the softening point is 280-290 ℃.
Further, the number of the used dustproof wear-resistant parts 4 is 2.
In this embodiment, the preparation method of the wear-resistant and dust-proof disc friction plate is as follows:
step 1: weighing phenolic resin, grinding dust, mineral fiber, barium sulfate, glass fiber and calcium carbonate according to the raw material proportion of the bottom layer 1, uniformly mixing to obtain a mixed bottom layer 1, then adding the mixed bottom layer 1 into a preforming mold, putting the surface into a latticed framework 3 after the surface is uniform by using a scraper, then adding a mixed friction layer 2 (weighing polyvinyl alcohol modified phenolic resin, nitrile rubber powder, friction powder, steel fiber, synthetic graphite, petroleum coke carbon powder, antimony sulfide, aramid fiber, potassium titanate, calcium carbonate and barium sulfate according to the raw material proportion of the friction layer 2, uniformly mixing to obtain a mixed friction layer 2), using the scraper to make the surface uniform, and pressing down by using a pressing head in clearance fit with the mold to prepare a prefabricated block; keeping the temperature of the preforming mold at 25-45 ℃;
step 2: putting the precast block and the steel backing 5 into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 160 ℃, the pressure maintaining time is 10min, and the friction material product is obtained after demoulding;
and step 3: putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 8 hours at 160 ℃, and naturally cooling to obtain a friction block;
and 4, step 4: and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
Example 3
The utility model provides a wear-resisting dust-protection type dish friction disc, includes that steel backing 5, bottom 1 and setting are in the frictional layer 2 of 1 one side of bottom, wear-resisting dust-protection type dish friction disc still includes:
the latticed framework 3 is arranged between the bottom layer 1 and the friction layer 2, and the latticed framework 3 is covered by the bottom layer 1 and the friction layer 2;
dustproof wearing parts 4 are provided with a plurality ofly altogether, and run through respectively in frictional layer 2 does not pass latticed skeleton 3, steel backing 5 be used for with bottom 1 is kept away from one side of latticed skeleton 3 is connected, frictional layer 2 is kept away from one side of latticed skeleton 3 corresponds and is provided with a plurality of installation through-holes 6 that are used for the installation dustproof wearing parts 4.
In this embodiment, the dustproof wear-resistant member 4 is a rod-shaped material formed by hot pressing, specifically, 36 parts of phenolic resin, 0.5 part of molybdenum disulfide, 2 parts of graphite, 12 parts of high-temperature-resistant hot melt adhesive (polyamide hot melt adhesive), and 35 parts of barium sulfate are weighed, and after being uniformly mixed, hot pressing forming is performed by using a conventional technology. The raw materials of the high-temperature-resistant hot melt adhesive comprise polyamide resin and sebacic acid, and the high-temperature-resistant hot melt adhesive is prepared by taking the polyamide resin as a main matrix and adding the sebacic acid in a certain proportion to adjust the softening point, wherein the proportion is that the polyamide resin is as follows: the weight ratio of the sebacic acid is 1: 0.8, wherein the softening point of the high-temperature resistant hot melt adhesive is 220 ℃.
In this embodiment, the preparation method of the wear-resistant and dust-proof disc friction plate includes the following steps:
step 1: weighing 5 parts of phenolic resin, 30 parts of grinding dust, 10 parts of mineral fiber, 10 parts of barium sulfate, 3 parts of glass fiber and 5 parts of calcium carbonate according to the proportion of the raw materials of the bottom layer 1, uniformly mixing to obtain a well-mixed bottom layer 1, then adding the mixed bottom layer 1 into a preforming mold, using a scraper to make the surface uniform, then placing the surface into a latticed framework 3, then adding the mixed friction layer 2 into a preforming mold (15 parts of polyvinyl alcohol modified phenolic resin, 1.5 parts of nitrile rubber powder, 1.8 parts of friction powder, 14 parts of steel fiber, 3.7 parts of synthetic graphite, 3.4 parts of petroleum coke powder, 1 part of antimony sulfide, 0.5 part of aramid fiber, 2.5 parts of potassium titanate, 6 parts of calcium carbonate and 30 parts of barium sulfate are uniformly mixed according to the raw material proportion of the friction layer 2 to obtain the mixed friction layer 2), using a scraper to make the surface uniform, and using a pressure head in clearance fit with the preforming mold to press down to prepare a precast block; keeping the temperature of the preforming mold at 25 ℃;
step 2: putting the precast block and the steel backing 5 into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa, the temperature is 155 ℃, the pressure maintaining time is 8min, and the friction material product is obtained by demoulding;
and step 3: putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 6 hours at 155 ℃, and naturally cooling to obtain a friction block;
and 4, step 4: and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
Example 4
The utility model provides a wear-resisting dust-protection type dish friction disc, includes that steel backing 5, bottom 1 and setting are in the frictional layer 2 of 1 one side of bottom, wear-resisting dust-protection type dish friction disc still includes:
the latticed framework 3 is arranged between the bottom layer 1 and the friction layer 2, and the latticed framework 3 is covered by the bottom layer 1 and the friction layer 2;
dustproof wearing parts 4 are provided with a plurality ofly altogether, and run through respectively in frictional layer 2 does not pass latticed skeleton 3, steel backing 5 be used for with bottom 1 is kept away from one side of latticed skeleton 3 is connected, frictional layer 2 is kept away from one side of latticed skeleton 3 corresponds and is provided with a plurality of installation through-holes 6 that are used for the installation dustproof wearing parts 4.
In this embodiment, the dustproof wear-resistant member 4 is a rod-shaped material formed by hot pressing, specifically, 42 parts of phenolic resin, 2 parts of molybdenum disulfide, 6 parts of graphite, 18 parts of high-temperature-resistant hot melt adhesive (polyamide hot melt adhesive), and 40 parts of barium sulfate are weighed, and after being uniformly mixed, hot pressing is performed by using a conventional technology. The raw materials of the high-temperature-resistant hot melt adhesive comprise polyamide resin and sebacic acid, and the high-temperature-resistant hot melt adhesive is prepared by taking the polyamide resin as a main matrix and adding the sebacic acid in a certain proportion to adjust the softening point, wherein the proportion is that the polyamide resin is as follows: the weight ratio of the sebacic acid is 1: 1.2, the softening point of the high-temperature resistant hot melt adhesive is 280 ℃.
In this embodiment, the preparation method of the wear-resistant and dust-proof disc friction plate includes the following steps:
step 1: weighing 15 parts of phenolic resin, 50 parts of grinding dust, 15 parts of mineral fiber, 20 parts of barium sulfate, 5 parts of glass fiber and 10 parts of calcium carbonate according to the proportion of the raw materials of the bottom layer 1, uniformly mixing to obtain a well-mixed bottom layer 1, then adding the mixed bottom layer 1 into a preforming mold, using a scraper to make the surface uniform, then placing the surface into a latticed framework 3, then adding the mixed friction layer 2 into a preforming mold (25 parts of polyvinyl alcohol modified phenolic resin, 6 parts of nitrile rubber powder, 4 parts of friction powder, 20 parts of steel fiber, 8 parts of synthetic graphite, 7 parts of petroleum coke powder, 3 parts of antimony sulfide, 2 parts of aramid fiber, 3.2 parts of potassium titanate, 12 parts of calcium carbonate and 40 parts of barium sulfate are uniformly mixed according to the raw material proportion of the friction layer 2 to obtain the mixed friction layer 2), using a scraper to make the surface uniform, and using a pressure head in clearance fit with the preforming mold to press down to prepare a precast block; keeping the temperature of the preforming mold at 45 ℃;
step 2: putting the precast block and the steel backing 5 into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 20MPa, the temperature is 165 ℃, the pressure maintaining time is 12min, and the friction material product is obtained by demoulding;
and step 3: putting the obtained friction material product into an oven for heat treatment, specifically, preserving heat for 6-10h at 165 ℃, and naturally cooling to obtain a friction block;
and 4, step 4: and grinding and drilling the friction block according to the drawing size to meet the installation requirement, inserting the dustproof wear-resistant piece 4 into the corresponding hole, gluing and fixing to obtain the wear-resistant dustproof disc type friction plate.
Example 5
Compared with example 3, except that the raw materials of the friction layer 2 include: 17 parts of polyvinyl alcohol modified phenolic resin, 1.8 parts of nitrile rubber powder, 2 parts of friction powder, 15 parts of steel fiber, 4 parts of synthetic graphite, 4 parts of petroleum coke powder, 1.2 parts of antimony sulfide, 0.6 part of aramid fiber, 2.8 parts of potassium titanate, 7 parts of calcium carbonate and 32 parts of barium sulfate, and the rest is the same as that in example 3.
Example 6
Compared with example 3, except that the raw materials of the friction layer 2 include: 20 parts of polyvinyl alcohol modified phenolic resin, 3 parts of nitrile rubber powder, 2.5 parts of friction powder, 16 parts of steel fiber, 5 parts of synthetic graphite, 5 parts of petroleum coke powder, 2 parts of antimony sulfide, 0.8 part of aramid fiber, 2.9 parts of potassium titanate, 9 parts of calcium carbonate and 34 parts of barium sulfate, and the rest is the same as example 3.
Example 7
Compared with example 3, except that the raw materials of the friction layer 2 include: 22 parts of polyvinyl alcohol modified phenolic resin, 5 parts of nitrile rubber powder, 3 parts of friction powder, 18 parts of steel fiber, 7 parts of synthetic graphite, 6 parts of petroleum coke powder, 2.5 parts of antimony sulfide, 1.2 parts of aramid fiber, 3.2 parts of potassium titanate, 12 parts of calcium carbonate and 38 parts of barium sulfate, and the rest parts are the same as those in example 3.
Example 8
Compared with the example 3, except that the bottom layer 1 comprises the following raw materials: the procedure was repeated except for using 6 parts of phenol resin, 35 parts of grinding dust, 11 parts of mineral fiber, 12 parts of barium sulfate, 3.2 parts of glass fiber and 6 parts of calcium carbonate in the same manner as in example 3.
Example 9
Compared with the example 3, except that the bottom layer 1 comprises the following raw materials: the procedure was repeated except for using 8 parts of phenol resin, 40 parts of grinding dust, 12 parts of mineral fiber, 14 parts of barium sulfate, 3.5 parts of glass fiber and 7 parts of calcium carbonate in the same manner as in example 3.
Example 10
Compared with the example 3, except that the bottom layer 1 comprises the following raw materials: the procedure was repeated except for using 12 parts of phenol resin, 45 parts of grinding dust, 14 parts of mineral fiber, 18 parts of barium sulfate, 4 parts of glass fiber and 8 parts of calcium carbonate in the same manner as in example 3.
Example 11
Compared with the embodiment 3, except that the dustproof wear-resistant part 4 comprises the following raw materials: the process is the same as example 3 except that 38 parts of phenolic resin, 0.6 part of molybdenum disulfide, 3 parts of graphite, 13 parts of high-temperature resistant hot melt adhesive (polyamide hot melt adhesive) and 36 parts of barium sulfate.
Example 12
Compared with the embodiment 3, except that the dustproof wear-resistant part 4 comprises the following raw materials: the process is the same as example 3 except that 40 parts of phenolic resin, 0.9 part of molybdenum disulfide, 4 parts of graphite, 14 parts of high-temperature resistant hot melt adhesive (polyamide hot melt adhesive) and 37 parts of barium sulfate.
Example 13
Compared with the embodiment 3, except that the dustproof wear-resistant part 4 comprises the following raw materials: the process is the same as example 3 except that 42 parts of phenolic resin, 1.2 parts of molybdenum disulfide, 5 parts of graphite, 16 parts of high-temperature resistant hot melt adhesive (polyamide hot melt adhesive) and 38 parts of barium sulfate.
Example 14
The process was the same as in example 3 except that the softening point of the high temperature resistant hot melt adhesive was 225 ℃ as compared with example 3.
Example 15
The process is the same as example 3 except that the softening point of the high temperature resistant hot melt adhesive is 230 ℃ compared with example 3.
Example 16
The process is the same as example 3 except that the softening point of the high temperature resistant hot melt adhesive is 250 ℃ compared with example 3.
Example 17
The process was the same as in example 3 except that the softening point of the high temperature resistant hot melt adhesive was 260 ℃ as compared with example 3.
Example 18
The process was the same as in example 3 except that the softening point of the high temperature resistant hot melt adhesive was 280 ℃ as compared with example 3.
Example 19
The process was the same as in example 3 except that the softening point of the high temperature resistant hot melt adhesive was 285 ℃ as compared with example 3.
Example 20
The process was the same as in example 3 except that the softening point of the high temperature resistant hot melt adhesive was 290 ℃ as compared with example 3.
Comparative example 1
The typical automobile factory original disc type friction plate in the general technology.
Performance testing
The wear-resistant and dust-proof disk friction plates prepared in examples 1-2 and the disk friction plate of comparative example 1 were applied to a brake system, respectively, and were tested according to the automobile brake lining GB 5763-2008 standard, with the results shown in table 1. The general technology refers to the performance of a typical original disc type friction plate in an automobile factory.
Table 1 performance test results of wear-resistant and dust-proof disc type friction plate
Figure BDA0002728359550000151
It should be noted that the wear-resistant and dust-proof disc friction plate provided by the embodiment of the invention comprises a steel back 5, a bottom layer 1 and a friction layer 2 arranged on one side of the bottom layer 1, wherein a latticed framework 3 is arranged between the bottom layer 1 and the friction layer 2, a plurality of dust-proof and wear-resistant pieces 4 respectively penetrate through the friction layer 2 and do not penetrate through the latticed framework 3, the wear-resistant and dust-proof disc friction plate is designed into a multilayer friction plate through the latticed framework 3, the dust-proof and wear-resistant pieces 4 penetrate through the friction layer 2, meanwhile, the bottom layer 1 and the friction layer 2 are of two different formulas, the formula of the bottom layer 1 adopts a formula system which takes dust and drill cuttings generated during grinding in the process of producing the wear-resistant and dust-proof disc friction plate as main raw materials, and the formula system is matched with the latticed framework 3 to have excellent mechanical properties, the production cost is reduced, and the pollution is reduced; the formula of the friction layer 2 adopts an internationally leading asbestos-free formula system, so that the product is ensured to have excellent frictional wear characteristics, and the defects of large dust abrasion and poor wear resistance of the conventional brake pad are overcome; the preparation method provided by the invention is high in environmental protection, can be used for preparing the wear-resistant and dust-proof disc type friction plate, solves the problems that the existing disc type brake pad cannot ensure less grinding dust, is good in wear resistance, long in service life, meets the environmental protection requirement and simultaneously reduces the production cost, and has a wide market prospect.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims (10)

1. The utility model provides a wear-resisting dust-protection type disk friction disc, includes steel backing, bottom and sets up the frictional layer of bottom one side, its characterized in that, wear-resisting dust-protection type disk friction disc still includes:
the latticed framework is arranged between the bottom layer and the friction layer and is covered by the bottom layer and the friction layer in a wrapping manner;
the dustproof wear-resistant pieces are arranged in a plurality of numbers, penetrate through the friction layer and do not penetrate through the latticed framework;
wherein, the friction layer comprises the following raw materials: polyvinyl alcohol modified phenolic resin, nitrile rubber powder, friction powder, steel fiber, synthetic graphite, petroleum coke carbon powder, antimony sulfide, aramid fiber, potassium titanate, calcium carbonate and barium sulfate.
2. The wear-resistant and dust-proof disk friction plate as claimed in claim 1, wherein the steel backing is used for connecting with one side of the bottom layer far away from the latticed framework, and a plurality of mounting through holes for mounting the dust-proof and wear-resistant pieces are correspondingly arranged on one side of the friction layer far away from the latticed framework.
3. The wear-resistant and dust-proof disk friction plate of claim 1, wherein the friction layer comprises the following raw materials in parts by weight: 15-25 parts of polyvinyl alcohol modified phenolic resin, 1.5-6 parts of nitrile rubber powder, 1.8-4 parts of friction powder, 14-20 parts of steel fiber, 3.7-8 parts of synthetic graphite, 3.4-7 parts of petroleum coke powder, 1-3 parts of antimony sulfide, 0.5-2 parts of aramid fiber, 2.5-3.2 parts of potassium titanate, 6-12 parts of calcium carbonate and 30-40 parts of barium sulfate.
4. The wear-resistant and dust-proof disk friction plate of claim 1, wherein the bottom layer comprises the following raw materials in parts by weight: 5-15 parts of phenolic resin, 30-50 parts of grinding dust, 10-15 parts of mineral fiber, 10-20 parts of barium sulfate, 3-5 parts of glass fiber and 5-10 parts of calcium carbonate.
5. The wear-resistant and dust-proof disk friction plate of claim 1, wherein the dust-proof and wear-resistant member 4 is a rod-shaped material formed by hot pressing, and specifically comprises the following raw materials in parts by weight: 36-42 parts of phenolic resin, 0.5-2 parts of molybdenum disulfide, 2-6 parts of graphite, 12-18 parts of polyamide hot melt adhesive and 35-40 parts of barium sulfate.
6. The wear-resistant and dust-proof disk friction plate as claimed in claim 5, wherein the raw materials of the polyamide hot melt adhesive comprise polyamide resin and sebacic acid, and the polyamide hot melt adhesive is prepared by taking the polyamide resin as a main matrix and adding the sebacic acid to adjust the softening point to 220-290 ℃.
7. A method of making a wear and dust resistant disc friction plate as claimed in any one of claims 1 to 6 comprising the steps of:
1) adding the bottom layer into a pre-forming die, then putting the pre-forming die into a latticed framework, adding a friction layer into the pre-forming die, and pressing down by using a pressing head in clearance fit with the pre-forming die to prepare a precast block;
2) and putting the precast block and the steel backing into a hot-pressing die for hot-press forming, wherein the parameters of the hot-press forming process are as follows: the pressure is 15MPa-20MPa, the temperature is 155-165 ℃, the pressure maintaining time is 8-12min, and the friction material product is obtained after demoulding;
3) carrying out heat treatment on the obtained friction material product, specifically, carrying out heat preservation at 155-165 ℃ for 6-10h, and naturally cooling to obtain a friction block;
4) and grinding and drilling the friction block to insert the dustproof wear-resistant piece and glue the piece for fixation to obtain the wear-resistant dustproof disc type friction plate.
8. The method of manufacturing a wear-resistant and dust-proof disc friction plate according to claim 7, wherein in the method of manufacturing a wear-resistant and dust-proof disc friction plate, a temperature of a preforming mold is maintained at 25 ℃ to 45 ℃.
9. A wear-resistant and dust-proof disc friction plate produced by the method for producing a wear-resistant and dust-proof disc friction plate according to claim 7 or 8.
10. A method of using a wear and dust resistant disc friction plate as claimed in claim 1 or 2 or 3 or 4 or 5 or 6 or 9 in the machining of automotive parts.
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