CN101805589A - Raw paper of high-performance environment-friendly paper based friction material and manufacturing method of friction plate - Google Patents
Raw paper of high-performance environment-friendly paper based friction material and manufacturing method of friction plate Download PDFInfo
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Abstract
The invention discloses raw paper of a high-performance environment-friendly paper based friction material and a manufacturing method of a friction plate. The high-performance environment-friendly paper based friction material is characterized by comprising the following components in percentage by weight: a substrate comprises 7-15% of carbon fiber, 5-10% of chopped aramid fiber, 5-10% of aramid pulp and 9-30% of bamboo fiber pulp; a friction agent comprises 10-20% of kieselguhr and 8-12% of cashew nut shell powder; a frictional property regulator adopts 2-4% of rubber particles, 5-10% of calcium carbonate and 10-15% of flake graphite; and a forming adhesive comprises 1-2% of fluororubber, 3-15% of silicone resin and 3-15% of phenolic resin. The invention fully forms the materials of the friction material into a whole by changing the traditional impregnation process, effectively improves the physical and mechanical properties of the friction plate, improves the friction factors, regulates the dynamic and static friction ratio factors, and reduces the abrasion ratio of the friction plate.
Description
Technical field
The present invention relates to the making method of a kind of paper friction material body paper and friction plate thereof, the particularly a kind of high-performance paper base frication material that can in brake and clutch coupling, work and the method for utilizing this material making friction plate.
Background technology
Paper friction material is meant and utilizes wet papermaking process to produce many materials of homogeneous body paper, prepare friction plate by cross cutting, dipping, superimposed hot press molding method then, be widely used in mechanical clutch such as engineering machinery, agricultural machine, mining machinery, heavy-duty car, car and boats and ships and the breaking system in order to transmit moment of torsion, deceleration and braking.
In China, friction materials in the past extensively adopts the compacting of dry method powder metallurgy mould to make friction plate.Its advantage is once shaped, can utilize powder friction raw material during material is formed fully, the low production cost of friction plate; Its shortcoming is that the pore texture of friction materials can not get control, and the compression rebound that influences frictional behaviour can not be regulated, and frictional coefficient is low, moving/stiction difference is big.And introduce traditional paper friction material, it mainly adopts with asbestos as the fortifying fibre matrix, utilize fibrous magnesium silicate high-tensile, high flexible, chemically-resistant and heat erosion with and cheap; But fibrous magnesium silicate can cause diseases such as asbestosis, mesothelioma of pleura.Simultaneously, along with modern mechanical towards at a high speed, the direction of heavy duty develops, to the demand of the long fine paper base frication material of good heat resistance, life-span, people research and develop non-asbestos paper-based friction material.
The research of paper friction material mainly concentrates on fortifying fibre, filler and conditioning agent, binding agent abroad, studies on the technology, for example: 5-35% aramid fiber that is that uses in the United States Patent (USP) 552966 in the employing of fiber and the cotton fibre of 15-55%; Introduce the tynex of the cellulose fiber peacekeeping 15% of use 25% in the United States Patent (USP) 6331358; Use fiber cable fiber, carbon fiber and Novoloid fiber (a kind of aramid fiber) in the United States Patent (USP) 5989390.The Novolac resin (a kind of resol) of 30-15% and the silicone resin of 30-10% have been adopted in the use of binding agent in the United States Patent (USP) 5529666; Resol and silicone resin have also been used in United States Patent (USP) 6331358 and the United States Patent (USP) 6182804.United States Patent (USP) 4256801 has added the synusia shape graphite of 20-30% on filler and the conditioning agent.United States Patent (USP) 6060536 has been introduced the method for making basic unit and friction layer and synthetic paper base frication material with paper machine respectively on the technology.
Chinese patent 03114475.6 discloses a kind of carbon fiber and has strengthened paper friction material and preparation method thereof, and the principal feature of this method is the recycling by scrap stock, and production cost is reduced.Chinese patent 040073261.2 Doublelayer paper base friction material and friction plate making method adopt the method for making basic unit and friction layer and synthetic paper base frication material respectively, also reclaim simultaneously and utilize scrap stock.
Can see by the research to above patent: in the application of paper friction material, all do feasiblely to the recovery application of raw-material research and scrap stock, the key of problem is that the frictional behaviour of paper friction material is influenced jointly by raw material and technology.For example: evenness, the pore texture of the body paper of manufacturing paper with pulp of paper friction material; Compression recovery performance of friction materials friction plate or the like after the impregnation technology.
Summary of the invention
The object of the present invention is to provide a kind of high-performance environment-friendly paper friction material and friction plate making method, this serial friction materials has the excellent friction performance, good Oil Guide, heat conduction and resistance to elevated temperatures, high-strength wear resisting property can be used for the clutch coupling and the breaking system of battle wagon and building and mining site heavy-load automobile.
The technical scheme that the present invention solves:
The weight percent of component:
Matrix adopting: carbon fiber 7-15%, short aramid fiber 5-10%, aramid pulp 5-10% and the bamboo fibers slurry 9-30% of cutting;
Friction agent adopts: diatomite 10-20% and cashew nut shell powder 8-12%;
Frictional property regulator adopts: rubber grain 2-4%, lime carbonate 5-10% and flake graphite 10-15%;
The shaping cakingagent adopts: viton 1-2%, silicone resin 3-15% and resol 3-15%.
A kind of method that adopts the described high-performance environment-friendly paper friction material of claim 1 to make the friction materials body paper,
(1) earlier bamboo fibers is pulled an oar, beating consistency is 1-4%, beating degree is 25-50SR, again with carbon fiber, weak point is cut aramid fiber and aramid pulp is uniformly dispersed in polyoxyethylene PEO and benzene sulfonic acid sodium salt mixed solution, its mass concentration is that benzene sulfonic acid sodium salt, the mass concentration of 0.05-0.1% is 0.05-0.1% polyoxyethylene PEO, and adding mass concentration again is 0.01-0.05% polypropylene phthalein amine;
(2) after paper technology is manufactured paper with pulp routinely, make base board by press dewatering and vacuum-drying, squeezing process: pressure 0.2-0.4MPa, time 1-3min;
(3) drying process: vacuum tightness 0.06-0.08MPa, temperature 90-150 ℃, time 10-30min.
A kind of method that adopts the friction materials body paper making friction plate of above-mentioned described making,
(1) the above-mentioned base board stamping-out that obtains is become ring plate, then ring plate is flooded: at first be immersed in 15-25min in the solids content 20-30% viton solution, then ring plate being put into the mixing solutions that resol that solids content is 40-50% and solids content be 25-40% resol and silicone resin floods, dipping time 30-40 minute, dry then;
(2) just make the friction ring plate, its process of thermal treatment after solidification heat is handled: 160 ± 5 ℃ of temperature, time 3-4h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 0.5-1.8MPa, 160 ± 5 ℃ of temperature, time 10-15min.
The main benzene sulfonic acid sodium salt that adopts of manufacturing paper with pulp of body paper is made tensio-active agent among the present invention, and polyoxyethylene is that dispersion agent can make hydrophobic many materials form finely dispersed slurry; Add polypropylene phthalein amine (also might be treated starch) again and impel when manufacturing paper with pulp the friction materials body paper in follow-up dispersion is stirred, tiny component can be kept fully in the slurry.
The present invention adopts the mode of twice different binding agent of dipping, mainly like the S. E. A. that can provide higher in the viton matrix and adapt to higher temperature, thereby more be applicable to heavily loaded situation and high temperature according to carbon fiber, kevlar fiber and pulp thereof, bamboo fibers; And for the second time dipping mainly is to allow fiber and other material is well-bonded and form the spatial network, wherein will reasonably control the consumption of the solidifying agent of Novo1ac resin.
The present invention adopts the technology of flooding nanometer resol behind the first stamping-out, and the remaining base board scrap stock of stamping-out can be recovered in the stock tank and utilize.
Characteristics of the present invention mainly show: control evenness of body paper and porosity and then influence stability, compression resilience and the Oil Guide of the frictional behaviour of friction plate; Fully form whole its frictional coefficient of physical and mechanical properties-raisings that improves friction plate effectively by changing each material that traditional impregnation technology makes friction materials, regulate sound friction scale-up factor, the rate of wear of reduction friction plate.Adopting Xi'an Shuntong Institute Of Electrical And Applied Technology to produce MM-1000II type friction and wear behavior trier according to national standard detects a series of friction plates: kinetic friction coefficient: 0.14-0.17, static friction coefficient 0.15-0.18, sound friction ratio 0.76-0.95; Wear rate is 1.33-1.42 * 10-5mm
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Embodiment
A kind of high-performance environment-friendly paper friction material of the present invention and friction plate making method, the usage ratio of its friction materials raw material: carbon fiber 10-25%, aramid short fiber 5-10%, aramid pulp 5-10%, bamboo fibers slurry 20-30%, graphite 10-30%, diatomite 20-30%, rubber grain 2-4%, rouge 3-8%, aluminum oxide 1-5%, lime carbonate 5-15%, viton 1-2%, Novolac resin (a kind of resol) 3-15% and silicone resin 3-15%.
A kind of Doublelayer paper base friction material is made the method for friction plate: earlier bamboo fibers is pulled an oar, beating consistency is 2-4%, beating degree is 25-50SR, again with carbon fiber, weak point is cut aramid fiber and aramid pulp is uniformly dispersed in polyoxyethylene (PEO) and benzene sulfonic acid sodium salt mixed solution, its concentration requirement benzene sulfonic acid sodium salt 0.05-0.1%, PEO0.05-0.1% add polypropylene phthalein amine 0.01-0.05% again; Matrix consumption carbon fiber 10-25%, short aramid fiber 5-10%, aramid pulp 5-10%, the bamboo fibers slurry 20-30% of cutting, then by above-mentioned friction material formulation prepare burden, slurrying; After paper technology is manufactured paper with pulp routinely, make base board by press dewatering and vacuum-drying, squeezing process: pressure 0.2-0.4MPa, time 1-3min; Drying process: vacuum tightness 0.06-0.08MPa, temperature 90-150 ℃, time 10-30min; Product size is with base board stamping-out Cheng Huan; The ring plate dipping at first is immersed in 15-25min in the solids content viton solution, then ring plate being put into Novolac resin that solids content is 40-50% (a kind of resol) and solids content is that 25-40% silicone resin mixing solutions floods, dipping time 30-40 minute, dry then and solidification heat was handled and is promptly made the friction ring plate; Process of thermal treatment: 160 ± 5 ℃ of temperature, time 3-4h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 0.5-1.8MPa, 5 ℃ of temperature 160 scholars, time 10-15min; Promptly make friction plate through face machined flat and groove milling at last.
Embodiment 1:
A kind of high-performance environment-friendly paper friction material and friction plate making method, the usage ratio of its friction materials raw material: carbon fiber 10%, aramid short fiber 5%, aramid pulp 5%, bamboo fibers slurry 30%, graphite 10%, diatomite 20%, rubber grain 2%, rouge 4%, aluminum oxide 1%, lime carbonate 5%, viton 1%, Novolac resin (a kind of resol) 4% and silicone resin 3%.
The making method technical process of paper-base friction wafer: raw material is handled-is prepared burden-pull an oar-join slurry and discongests-copy paper-squeezing-drying-moulding-twice dipping-thermal treatment-paster.Wherein Da Jiang slurry is dense 1%, beating degree 30SR; Join slurry and discongest middle benzene sulfonic acid sodium salt 0.05%, PEO0.05%, polypropylene phthalein amine 0.02%; Squeezing process: pressure 0.2MPa, time 3min; Drying process: vacuum tightness 0.06MPa, 145 ℃ of temperature, time 15min; Product size is with base board stamping-out Cheng Huan; The ring plate dipping at first is immersed in 25min in the solids content viton solution, then ring plate being put into solids content and be 40% Novolac resin (a kind of resol) and solids content is that 25% silicone resin mixing solutions floods, dipping time 40 minutes, dry then and solidification heat is handled and is promptly made the friction ring plate; Process of thermal treatment: 160 ± 5 ℃ of temperature, time 3h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 0.5MPa, 160 ± 5 ℃ of temperature, time 10min; Promptly make friction plate through face machined flat and groove milling at last.
Adopting Xi'an Shuntong Institute Of Electrical And Applied Technology to produce MM-1000II type friction and wear behavior trier according to national standard detects a series of friction plates: kinetic friction coefficient 0.14, static friction coefficient 0.17, sound friction ratio 0.82; Wear rate is 1.42 * 10-5mm
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Embodiment 2:
A kind of high-performance environment-friendly paper friction material and friction plate making method, the usage ratio of its friction materials raw material: carbon fiber 14%, aramid short fiber 8%, aramid pulp 7%, bamboo fibers slurry 19%, graphite 12%, diatomite 15%, rubber grain 3.5%, rouge 3%, aluminum oxide 2%, lime carbonate 6%, viton 1.5%, Novolac resin (a kind of resol) 5% and silicone resin 4%.
The making method technical process of paper-base friction wafer: raw material is handled-is prepared burden-pull an oar-join slurry and discongests-copy paper-squeezing-drying-moulding-dipping-thermal treatment-paster.Wherein Da Jiang slurry is dense 2.5%, beating degree 40SR; Join slurry and discongest middle benzene sulfonic acid sodium salt 0.07%, PEO0.08%, polypropylene phthalein amine 0.03%; Squeezing process: pressure 0.3MPa, time 2min; Drying process: vacuum tightness 0.07MPa, 120 ℃ of temperature, time 25min; Product size is with base board stamping-out Cheng Huan; The ring plate dipping at first is immersed in 20min in the solids content viton solution, then ring plate being put into solids content and be 45% Novolac resin (a kind of resol) and solids content is that 30% silicone resin mixing solutions floods, dipping time 35 minutes, dry then and solidification heat is handled and is promptly made the friction ring plate; Process of thermal treatment: 160 ± 5 ℃ of temperature, time 3.5h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 1.7MPa, 5 ℃ of temperature 160 scholars, time 15min; At last through making friction plate after face machined flat and the groove milling.
Adopting Xi'an Shuntong Institute Of Electrical And Applied Technology to produce MM-1000II type friction and wear behavior trier according to national standard detects a series of friction plates: kinetic friction coefficient: 0.153, and static friction coefficient 0.175, sound friction ratio 0.87; Wear rate is 1.37 * 10-5mm
3J
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Embodiment 3:
A kind of high-performance environment-friendly paper friction material and friction plate making method, the usage ratio of its friction materials raw material: carbon fiber 7%, short aramid fiber 10%, aramid pulp 9%, bamboo fibers slurry 9%, graphite 15%, diatomite 15%, rubber grain 3%, rouge 5%, aluminum oxide 3%, lime carbonate 7%, viton 2%, Novolac resin (a kind of resol) 10% and the silicone resin 10% cut.
The making method technical process of paper-base friction wafer: raw material is handled-is prepared burden-pull an oar-join slurry and discongests-copy paper-squeezing-drying-moulding-dipping-thermal treatment-paster.Wherein Da Jiang slurry is dense 3%, beating degree 45SR; Join slurry and discongest middle benzene sulfonic acid sodium salt 0.1%, PEO0.09%, polypropylene phthalein amine 0.05%; Squeezing process: pressure 0.4MPa, time 1min; Drying process: vacuum tightness 0.08MPa, 90 ℃ of temperature, time 30min; Product size is with base board stamping-out Cheng Huan; The ring plate dipping at first is immersed in 15min in the solids content viton solution, then ring plate being put into solids content and be 50% Novolac resin (a kind of resol) and solids content is that 45% silicone resin mixing solutions floods, dipping time 30 minutes, dry then and solidification heat is handled and is promptly made the friction ring plate; Process of thermal treatment: 160 ± 5 ℃ of temperature, time 4h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 1.1MPa, 160 ± 5 ℃ of temperature, time 12min; Promptly make friction plate through face machined flat and groove milling at last.
Adopting Xi'an Shuntong Institute Of Electrical And Applied Technology to produce MM-1000II type friction and wear behavior trier according to national standard detects a series of friction plates: kinetic friction coefficient 0.167, static friction coefficient 0.179, sound friction ratio 0.93; Wear rate is 1.34 * 10-5mm
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Claims (3)
1. a high-performance environment-friendly paper friction material is characterized in that, the weight percent of component:
Matrix adopting: carbon fiber 7-15%, short aramid fiber 5-10%, aramid pulp 5-10% and the bamboo fibers slurry 9-30% of cutting;
Friction agent adopts: diatomite 10-20% and cashew nut shell powder 8-12%;
Frictional property regulator adopts: rubber grain 2-4%, lime carbonate 5-10% and flake graphite 10-15%;
The shaping cakingagent adopts: viton 1-2%, silicone resin 3-15% and resol 3-15%.
2. method that adopts the described high-performance environment-friendly paper friction material of claim 1 to make the friction materials body paper is characterized in that:
(1) earlier bamboo fibers is pulled an oar, beating consistency is 1-4%, beating degree is 25-50SR, again with carbon fiber, weak point is cut aramid fiber and aramid pulp is uniformly dispersed in polyoxyethylene PEO and benzene sulfonic acid sodium salt mixed solution, its mass concentration is that benzene sulfonic acid sodium salt, the mass concentration of 0.05-0.1% is 0.05-0.1% polyoxyethylene PEO, and adding mass concentration again is 0.01-0.05% polypropylene phthalein amine;
(2) after paper technology is manufactured paper with pulp routinely, make base board by press dewatering and vacuum-drying, squeezing process: pressure 0.2-0.4MPa, time 1-3min;
(3) drying process: vacuum tightness 0.06-0.08MPa, temperature 90-150 ℃, time 10-30min.
3. method that the friction materials body paper that adopts the described making of claim 2 is made friction plate is characterized in that:
(1) the above-mentioned base board stamping-out that obtains is become ring plate, then ring plate is flooded: at first be immersed in 15-25min in the solids content 20-30% viton solution, then ring plate being put into the mixing solutions that resol that solids content is 40-50% and solids content be 25-40% resol and silicone resin floods, dipping time 30-40 minute, dry then;
(2) just make the friction ring plate, its process of thermal treatment after solidification heat is handled: 160 ± 5 ℃ of temperature, time 3-4h is bonded on the steel core plate heat pressing process by the hot pressing ring plate that will rub: pressure 0.5-1.8MPa, 5 ℃ of temperature 160 scholars, time 10-15min.
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