CN104846690B - Wet paper-based friction material for agricultural machinery and manufacturing method of friction plate made of same - Google Patents
Wet paper-based friction material for agricultural machinery and manufacturing method of friction plate made of same Download PDFInfo
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Abstract
The invention relates to a wet paper-based friction material for agricultural machinery and a manufacturing method of a friction plate made of the wet paper-based friction material. The invention aims to provide the wet paper-based friction material with the characteristic of high dynamic and static friction coefficients; and the provided method has the characteristic of simple process. Through the adoption of the technical scheme, the wet paper-based friction material for the agricultural machinery comprises the ingredients, namely a base material, a friction performance regulator and a forming adhesive. The manufacturing method of the wet paper-based friction plate for the agricultural machinery is carried out according to the following steps: firstly, making base paper; and secondly, manufacturing the wet paper-based friction plate for the agricultural machinery, wherein the step of making the base paper comprises the following substeps: firstly, carrying out microfiber oxidation treatment on reinforced fibers; secondly, preprocessing; thirdly, obtaining a mixture; fourthly, forming mixed slurry of which materials are uniformly dispersed; and fifthly, carrying out papermaking of the base paper; and the step of manufacturing the wet paper-based friction plate for the agricultural machinery comprises the following substeps: firstly, impregnating the base paper and then drying; secondly, carrying out hot-pressing curing on the base paper to obtain the wet paper-based friction material for later use; and thirdly, adhering the wet paper-based friction material for the agricultural machinery to a core veneer.
Description
Technical field
The present invention relates to a kind of friction resistance material, especially agricultural machinery are used with Wet-type paper friction resistance material and agricultural machinery
The preparation method of Wet-type paper friction plate；Clutch be applied to agricultural machinery and brakes.
Background technology
Traditional agricultural machinery wet type friction resistance material, mainly adopts rubbery cork base Wet-type friction slice；It is excellent
Point is can fully to utilize powder friction raw material and niggerhead material in material composition structure, and one-shot forming, produces into
This is cheap；Shortcoming is that the pore structure of friction material is difficult to control to, and the compression recovery performance of impact friction effect is unadjustable, rubs
Wiping coefficient is low, and the ratio difference of dynamic/static friction is big.Develop towards the direction of high speed, heavy duty, automation with Modern Agricultural Machine,
The demand of heat-resist, life-span length high property Wet-type paper friction resistance material is day by day increased, it has also become united reaper, rice transplanting
Hydraulic drive in machine, seeder, farm tractor, rotary cultivator, straw field pickup baler, agriculture land leveller, agricultural ploughing machine and system
Main product in dynamic system.Therefore, develop novel agricultural machinery Wet-type paper friction resistance material and its friction plate, be one
Very urgent task.
Content of the invention
The purpose of the present invention is to overcome the shortcomings of above-mentioned background technology, provides a kind of agricultural machinery Wet-type paper frictional resistance material
Material and preparation method thereof, made Wet-type paper friction resistance material should have static and dynamic friction coefficient height, stable friction performance, wear-resisting
Damage the feature functional, static and dynamic friction coefficient is higher than adjustable, energy absorption capability, and good Oil Guide, heat conduction and Nai Gao
Warm nature energy；Described preparation method should have that operation is simple, easy feature easy to make.
Present invention provide the technical scheme that a kind of agricultural machinery Wet-type paper friction resistance material, included composition and
Corresponding weight portion is:
1) matrix material: 10～20 parts of surface treated polyimides chopped strand, 16～35 parts of Ya Bosi fiber, warp
10～20 parts of the p-aramid fiber fibrid of surface treatment；20～35 parts of etf wood fibre；
2) frictional property regulator: 9～18 parts of diatomite, 4～8 parts of aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl (also known as
Ceramic) 10～20 parts, 8～18 parts of tiny balloon powder (also known as tiny balloon), 6～10 parts of elastic polyurethane friction particles,
10～18 parts of modified floating bead, 8～16 parts of emulsification graphite (also known as graphite emulsion), 1～4 part of fluorographite, benzoxazine resins 5
～8 parts；
3) it is molded adhesive: ptfe emulsion 4～9,5～10 parts of hydrogenated liquid butyronitrile latex, benzoxazine resins
7～10 parts of solution；
Also include appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, appropriate detergent alkylate
Sodium sulfonate.
A diameter of 10～the 20um of described polyimides chopped strand, length is 5～10mm；Described Ya Bosi fibre diameter is
15～25 μm, length is 130 μm～250 μm；A diameter of 16～the 24um of p-aramid fiber fibrid, length is 2～3mm；Described
The a diameter of 25～35um of etf wood fibre, length be 2～3mm.
In described various raw material, diatomite, benzoxazine resins, fluorographite granularity all >=325 mesh, described pottery
Hollow powder pearl, tiny balloon powder, the granularity of modified floating bead are 150～250 mesh, the granularity of described elastic polyurethane friction particles
For 100～120 mesh.
In described benzoxazine resins solution, benzoxazine resins are 1: 3～5 with the part by weight of alcohol.
A kind of agricultural machinery preparation method of Wet-type paper friction plate, follows the steps below:
First, make agricultural machinery Wet-type paper friction resistance material body paper
(1) reinforcing fiber fento oxidation processes:
Polyimides chopped strand is put in liquor potassic permanganate and impregnates 1 ± 0.2 hour, then take out clean 90 ±
5 DEG C are vacuum dried 2 ± 0.2 hours, obtain surface treated polyimides chopped strand；The matter of sulfuric acid in liquor potassic permanganate
Amount ratio is 50%, and the mass ratio of potassium permanganate is 1%, and remaining is water；
P-aramid fiber fibrid is put in Reverse Microemulsion System, 40 DEG C～45 DEG C of temperature, react 10～12 hours
After take out and dry 5 ± 1 hours at 100 ± 3 DEG C, obtain surface treated p-aramid fiber fibrid, take out sealing preserve standby
With；Composition in Reverse Microemulsion System and part by weight are: horseradish peroxidase content is 15%, Glycidyl methacrylate
Ester content 45%, normal octane content 20%, remaining is water；
(2) pre-process: in 50～55 parts of 40～45 DEG C of water, be separately added into lauryl sodium sulfate and dodecyl
Each 5～6 parts of benzene sulfonic acid sodium salt, adds the mixed of the polyimides chopped strand that step (1) processed and p-aramid fiber fibrid
Close material, then stir 12～14 minutes, after being dried with clean water, obtain pretreatment material standby；120～130 DEG C of baking temperature,
45～55 minutes drying times；
(3) first Ya Bosi fiber and etf wood fibre are put into making beating in suitable quantity of water, beating consistency is 6～7%, making beating
Spend for 50～60 ° of sr；It is subsequently added in the pretreatment material obtain in step (2), add the polycyclic oxygen that concentration is 0.05～0.12
2～3 parts of vinyl solution, is discongested uniformly with fluffer, adds 3～4 parts of the polypropylene phthalein amine aqueous solution that concentration is 0.05-0.07,
Mixture is obtained after stirring；
(4) add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, hollow in the mixture that step (3) is obtained
Microballoon powder, elastic polyurethane friction particles, modified floating bead, emulsification graphite, fluorographite, benzoxazine resins, polytetrafluoroethylene (PTFE)
Emulsion, hydrogenated liquid butyronitrile latex, are stirring evenly and then adding into 3～4 parts of the polyacrylamide that concentration is 0.05-0.07 and stir all
Even；It is eventually adding 2～3 parts of the PEO solution that concentration is 0.05～0.12, form material after stirring finely dispersed mixed
Close slurry；
(5) manufacture paper with pulp body paper: paper substrate friction resistance material body paper of manufacturing paper with pulp on conventional paper forming equipment, pulp density is 0.05%～
0.07%, body paper quantification of 55-65g m-2, manufacture paper with pulp pressure 0.2～0.3mpa, obtains agricultural machinery Wet-type paper frictional resistance material
Material body paper；
2nd, make agricultural machinery Wet-type paper friction plate, the steps include:
(1) body paper is put into dipping, dip time 18-22 minute in benzoxazine resins solution, be then dried；Temperature is dried
50～65 DEG C of degree, 70～75 minutes drying times；
(2) dried agricultural machinery is carried out hot-press solidifying with Wet-type paper friction resistance material body paper, its hot-press solidifying
Technique: pressure 0.2-0.3mpa, 150 ± 5 DEG C of temperature, 1～2 minute time, cut into strip after cooling, obtain agricultural machinery
Standby with Wet-type paper friction resistance material；
(3) by the agricultural machinery of strip Wet-type paper friction resistance material, metal bone is pasted by stickup shaping equipment
On the central layer of frame.
Stirring in described step (2), is carried out using accurate reinforcement electric mixer.
Conventional paper forming equipment in described step (5) is that pattern is copied and taken device.
The invention has the beneficial effects as follows: due to, in one-shot forming papermaking process, being helped by beating process and interpolation correlation
Agent controls the uniformity of body paper material, porosity, by adding elastic polyurethane friction particles, hydrogenated butyronitrile breast in formula
Glue, ptfe emulsion ensure that body paper has higher static friction performance and compression resilience and less permanent deformation etc.
Performance, ensures that the static and dynamic friction coefficient stability of agricultural machinery Wet-type paper friction resistance material and its friction plate, product
High temperature resistant, oil resistant Oil Guide is all preferable, effectively improves the physical and mechanical properties of agricultural machinery friction resistance material；Further through
Add aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, modified floating bead, emulsification graphite, fluorographite in formula,
Improve its coefficient of kinetic friction, adjust static and dynamic friction coefficient ratio, improve the toughness of friction resistance material, reduce the abrasion of friction resistance material
Rate.(Xi'an Shuntong Institute Of Electrical And Applied Technology gives birth to adopt mm-1000ii type friction and wear behavior testing machine according to national standard
Produce) to the present invention provide friction plate detect after obtain data be: the coefficient of kinetic friction 0.190～0.205, static friction system
Number 0.213～0.220, sound friction ratio 1:1.07～1.15；Wear rate 0.78～0.95 × 10-6cm3·j.
Contrast conventional rubbery cork base wet friction piece performance (coefficient of kinetic friction 0.13～0.20, confficient of static friction
0.21～0.28, sound friction ratio 0.54～0.69；Wear rate 1.5～2.0 × 10-6cm3J) understand afterwards: this invention is obtained
All technical will be far superior to current rubbery cork base Wet-type friction slice.
Brief description
Fig. 1 is the agricultural machinery main structure diagram of Wet-type paper friction resistance material friction plate using the present invention.
Fig. 2 is the a-a of Fig. 1 to cross section structure diagram.
Specific embodiment
A kind of agricultural machinery body paper of Wet-type paper friction resistance material, refers to give birth to first with wet method one-shot forming papermaking process
The homogeneous many materials body paper producing；This body paper is after dipping, cross cutting, automatic cycle monolithic adhering processes, then passes through to overlap hot pressing
The friction brake wafer that the method for shaping is made, is widely used in clutch and brakes used in farm machinery, for passing
Torque delivery, deceleration and braking.
Agricultural machinery Wet-type paper friction plate as depicted, the friction plate central layer 1 including metallic framework and stickup
In the central layer of friction plate metallic framework double-edged friction resistance material layer 2；This friction resistance material layer is advised by multiple paper substrate brake pad 2-1
Then rearrange.
Described polyacrylamide solution is made up of with water polyacrylamide, and concentration is polyacrylamide in polyacrylamide solution
Percentage by weight shared by amine；Described Pluronic F-127 solution is made up of with water Pluronic F-127, and concentration is that Pluronic F-127 is molten
Percentage by weight shared by Pluronic F-127 in liquid.
The present invention adopts benzoxazine resins solution, adds alcohol by solid-state like benzoxazine resins and dissolves and forms；Benzo
Piperazine resin is 1: 3～5 with the part by weight of alcohol.
In described Reverse Microemulsion System, it is with horseradish peroxidase as catalyst and Glycidyl methacrylate ester
Mixed solution for monomer and water and normal octane.
Elastic polyurethane friction particles (the i.e. paper substrate friction resistance material polyurethane rubber base elastic-friction adopting in the present invention
Particle, separately applies for), including composition and weight portion be: 70～85 parts of polyurethane rubber, methyl vinyl silicone rubber 5～
15 parts, 1～3 part of 0.5～3 part of accelerator pz, age resistor rd, 3～6 parts of white carbon, 2～5 parts of activated magnesia, stearic acid
0.5～0.8 part, crosslinking agent dcp 1.5～4,0.5～3 part of sulphur, 6～10 parts of modified by alkyl phenol phenolic resin, Fluorspar Powder 1～3
Part, 1～5 part of silicon-carbide particle, 4～10 parts of magnesium borate crystal whisker.The fineness of this elastic-friction particle is 100 mesh～120 mesh.
3～5 μm of the diameter of described magnesium borate crystal whisker fiber, 30～50 μm of length.
In described various composition, accelerator pz, age resistor rd, white carbon, activated magnesia, stearic acid, crosslinking agent dcp,
Stearic acid, sulphur, modified by alkyl phenol phenolic resin, Fluorspar Powder, granularity≤325 mesh of silicon-carbide particle.
The preparation method of above-mentioned elastic polyurethane friction particles, follows the steps below；
1) various raw material are weighed by formula standby；
2) first by polyurethane rubber, methyl vinyl silicone rubber, accelerator pz, age resistor rd, white carbon, active oxidation
Magnesium, stearic acid, crosslinking agent dcp, sulphur, modified by alkyl phenol phenolic resin, Fluorspar Powder, silicon-carbide particle, magnesium borate crystal whisker put into
The mixing chamber of twin-screw continuous mixer kneads 16～18 minutes, and the temperature of mixing chamber is set in 120 DEG C～130 DEG C；So
Knead the compound completing afterwards and enter injection sulfurization discharging interior extrusion molding, injection sulfurization temperature is set in 150 DEG C～160
DEG C, injection pressure pressure 50mpa～60mpa；
3) make particle: the adhesive tape of twin-screw continuous mixer shaping puts in disintegrating machine and is broken into 100 mesh～120
Purpose caoutchouc elasticity particle；
4) caoutchouc elasticity is granule modified: the caoutchouc elasticity particle that will obtain, and dipping (being totally submerged) is in polytetrafluoroethylene (PTFE)
20～25 minutes in emulsion, then take out and put into 100～110 DEG C of dry for standby in vacuum drying oven.
Making step 4) described in ptfe emulsion solid content more than 60%.
The aramid fiber abrasion resistant particles (Application No. 201410538789.6) that the present invention adopts, its preparation method is according to following step
Suddenly carry out:
(1) coupling agent pretreatment: first ppta-pulp fibre and aramid short fiber are put into and impregnate 30 in coupling agent solution
Take out after～35 minutes and dry；
(2) batch mixing: the ppta-pulp fibre processing and aramid short fiber put in high speed mixer, mixing 4～
5 minutes, then take out standby in high speed mixer；
(3) pull an oar: first the ppta-pulp fibre processing step (2) and aramid short fiber put into nitrile (HTBN) rubber
Pull an oar in glue, beating consistency is 3～5%, beating degree is 35～45 ° of sr；It is subsequently added into the polycyclic oxygen that concentration is 0.05～0.08
Vinyl solution, is discongested with fluffer and is formed uniformly the uniform slurry of material dispersion；
(4) impregnate: by the prepared slurry of step (3) in 90～100 DEG C of drying in oven, the slurry after drying is put into
Impregnate 20～35 minutes in solvent-borne type cashew nut shell oil liquid resin；
(5) kneading: the slurry that step (4) is obtained puts in masticator, and is simultaneously introduced liquid styrene butadiene rubber, kneading temperature
Degree controls at 30～40 DEG C, and the kneading time was at 6～7 minutes.
(6) granulate: the compound that step (5) is obtained puts in degassing wheel comminutor and granulated；The aramid fiber obtaining is resistance to
Abrasive particle be spherical or cylindric, granularity between 40～60 mesh, hollow structure inside, surface has wrapped up one layer by liquid butylbenzene
Rubber and hydrogenated butyronitrile latex compounds, have certain compression resilience (compression ratio >=30%).
In above-mentioned coupling agent solution, the part by weight of titanate esters composite coupler is 20～30%, and remaining is water.
In addition to especially indicating, " part " of the present invention is weight portion.
A kind of body paper of agricultural machinery Wet-type paper friction resistance material and its fabrication processing of friction plate are: at raw material
Reason → dispensing → making beating → with slurry discongests → and copy paper → drying → shaping → dipping adhesive → inspection → heat cure → cut bar →
Automatic chip mounting → inspection → hot-press solidifying → packaging and storage.
In the present invention the other raw materials in addition to elastic polyurethane friction particles all outer available from.
Further illustrate below in conjunction with specific embodiment.
Embodiment 1
A kind of agricultural machinery Wet-type paper friction resistance material, including following raw material: 10 parts of polyimides chopped strand, Asia
Ripple thinks 20 parts of fiber, 12 parts of p-aramid fiber fibrid；25 parts of etf wood fibre；9 parts of diatomite, 4 parts of aramid fiber abrasion resistant particles,
10 parts of ceramic hollow micro mist pearl, 8 parts of tiny balloon powder, 6 parts of elastic polyurethane friction particles, modified 10 parts of floating bead, emulsification graphite 8
Part, 1.5 parts of fluorographite, 5 parts of benzoxazine resins, 4 parts of ptfe emulsion, 7 parts of hydrogenated liquid butyronitrile latex, benzo
7 parts of piperazine resin solution；
Appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, neopelex are fitted
Amount.
The a diameter of 15um of described polyimides chopped strand, length is 5mm；Described Ya Bosi fibre diameter is 20 μm, long
Spend for 130 μm～250 μm；A diameter of 16～the 24um of p-aramid fiber fibrid, length is 2～3mm；The wooden fibre of described etf
Tie up a diameter of 25～35um, length is 2～3mm；Described diatomite, benzoxazine resins, fluorographite granularity all >=325
Mesh；Described ceramic hollow micro mist pearl, tiny balloon powder, the granularity of modified floating bead are 200 mesh, described elastic polyurethane friction particles
Granularity be 100～120 mesh.
Make agricultural machinery using above-mentioned raw materials as follows with the method for Wet-type paper friction plate:
(1) reinforcing fiber fento oxidation processes: described surface treated polyimides chopped strand is by polyimides
Chopped strand puts in liquor potassic permanganate, and dipping takes out after 1 hour to clean and is vacuum dried 2 hours at 90 DEG C；Described through surface
The p-aramid fiber fibrid processing, puts in Reverse Microemulsion System, and temperature control is taken out after reacting 10 hours at 45 DEG C
100 DEG C of vacuum dryings, after 5 hours, take out sealing preserve standby；
(2) pre-process: in 50 parts of 45 DEG C of water, be separately added into lauryl sodium sulfate and neopelex
Each 5 parts, add the compound of the polyimides chopped strand that step (1) processed and p-aramid fiber fibrid, then stir
Mix 12 minutes, after being dried with clean water, obtain pretreatment material standby；120 DEG C of baking temperature, 55 minutes drying times；
(3) first Ya Bosi fiber and etf wood fibre are put into making beating in suitable quantity of water, beating consistency is 6%, beating degree is
50°sr；It is subsequently added in the pretreatment material obtain in step (2), adds 2 parts of the Pluronic F-127 solution that concentration is 0.06, use
Fluffer is discongested uniformly, adds 3 parts of the polypropylene phthalein amine aqueous solution that concentration is 0.05, obtains mixture after stirring；
(4) add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, hollow in the mixture that step (3) is obtained
Microballoon powder, elastic polyurethane friction particles, modified floating bead, emulsification graphite, fluorographite, benzoxazine resins, polytetrafluoroethylene (PTFE)
Emulsion, hydrogenated liquid butyronitrile latex, stir and are subsequently adding 3 parts of the polyacrylamide that concentration is 0.05 and stir；?
Add 2 parts of the PEO solution that concentration is 0.05 afterwards, after stirring, form the finely dispersed mixed slurry of material；
(5) manufacture paper with pulp body paper: paper substrate friction resistance material body paper of manufacturing paper with pulp on conventional paper forming equipment, pulp density is 0.05%, former
Paper quantification of 55g m-2, manufacture paper with pulp pressure 0.2mpa, obtains body paper；
(6) body paper is put into dipping, dip time 18 minutes in benzoxazine resins solution, be then dried；Baking temperature
50 DEG C, 75 minutes drying times；
(7) dried agricultural machinery is carried out hot-press solidifying with the body paper of Wet-type paper friction resistance material, its hot-press solidifying
Technique: pressure 0.2mpa, 145 DEG C of temperature, 2 minutes time, after cooling, cut into strip, obtain agricultural machinery wet type paper
Base frictional drag material is standby；
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, metal bone is pasted by stickup shaping equipment
On the central layer of frame, obtain final product agricultural machinery Wet-type paper friction plate.
Above-mentioned paper-base friction wafer is detected, the data of acquisition is: the coefficient of kinetic friction: 0.190, confficient of static friction
0.212, sound friction ratio 1:1.11；Wear rate is 0.90 × 10-6cm3·j.
Embodiment 2
A kind of agricultural machinery Wet-type paper friction resistance material, including following raw material: 12 parts of polyimides chopped strand, Asia
Ripple thinks 25 parts of fiber, 12 parts of p-aramid fiber fibrid；28 parts of etf wood fibre；11 parts of diatomite, 5 parts of aramid fiber abrasion resistant particles,
12 parts of ceramic hollow micro mist pearl, 9 parts of tiny balloon powder, 8 parts of elastic polyurethane friction particles, modified 12 parts of floating bead, emulsification graphite 9
Part, 2 parts of fluorographite, 6 parts of benzoxazine resins, 5 parts of ptfe emulsion, 8 parts of hydrogenated liquid butyronitrile latex, Benzoxazine
7.5 parts of resin solution；
Appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, neopelex are fitted
Amount.
The a diameter of 15um of described polyimides chopped strand, length is 5mm；Described Ya Bosi fibre diameter is 20 μm, long
Spend for 130 μm～250 μm；A diameter of 16～the 24um of p-aramid fiber fibrid, length is 2～3mm；The wooden fibre of described etf
Tie up a diameter of 25～35um, length is 2～3mm；Described diatomite, benzoxazine resins, fluorographite granularity all >=325
Mesh；Described ceramic hollow micro mist pearl, tiny balloon powder, the granularity of modified floating bead are 200 mesh, described elastic polyurethane friction particles
Granularity be 100～120 mesh.
Make agricultural machinery using above-mentioned raw materials as follows with the method for Wet-type paper friction plate:
(1) reinforcing fiber fento oxidation processes: described surface treated polyimides chopped strand is by polyimides
Chopped strand puts in liquor potassic permanganate, and dipping takes out after 1 hour to clean and is vacuum dried 2 hours at 90 DEG C；Described through surface
The p-aramid fiber fibrid processing, puts in Reverse Microemulsion System, and temperature control is taken out after reacting 10 hours at 50 DEG C
110 DEG C of vacuum dryings, after 5 hours, take out sealing preserve standby；
(2) pre-process: in 52 parts of 40 DEG C of water, be separately added into lauryl sodium sulfate and neopelex
Each 5 parts.Add the compound of the polyimides chopped strand that step (1) processed and p-aramid fiber fibrid, then stir
Mix 12 minutes, after being dried with clean water, obtain pretreatment material standby；125 DEG C of baking temperature, 50 minutes drying times；
(3) first Ya Bosi fiber and etf wood fibre fiber are put into making beating in suitable quantity of water, beating consistency is 6%, making beating
Spend for 55 ° of sr；It is subsequently added in the pretreatment material obtain in step (2), add the Pluronic F-127 solution 2 that concentration is 0.06
Part, discongested uniformly with fluffer, add 3 parts of the polypropylene phthalein amine aqueous solution that concentration is 0.05, after stirring, obtain mixture；
(4) add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, hollow in the mixture that step (3) is obtained
Microballoon powder, elastic polyurethane friction particles, modified floating bead, emulsification graphite, fluorographite, benzoxazine resins, polytetrafluoroethylene (PTFE)
Emulsion, hydrogenated liquid butyronitrile latex, stir and are subsequently adding 3 parts of the polyacrylamide that concentration is 0.05 and stir；?
Add 2 parts of the PEO solution that concentration is 0.05 afterwards, after stirring, form the finely dispersed mixed slurry of material；
(5) manufacture paper with pulp body paper: paper substrate friction resistance material body paper of manufacturing paper with pulp on conventional paper forming equipment, pulp density is 0.06%, former
Paper quantification of 60g m-2, manufacture paper with pulp pressure 0.3mpa, obtains body paper；
(6) body paper is put into dipping, dip time 20 minutes in benzoxazine resins solution, be then dried；Baking temperature
60 DEG C, 72 minutes drying times；
(7) dried agricultural machinery is carried out hot-press solidifying with the body paper of Wet-type paper friction resistance material, its hot-press solidifying
Technique: pressure 0.2mpa, 150 DEG C of temperature, 1.5 minutes time, after cooling, cut into strip, obtain agricultural machinery wet type
Paper substrate friction resistance material is standby；
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, metal bone is pasted by stickup shaping equipment
On the central layer of frame, obtain final product agricultural machinery Wet-type paper friction plate；
Above-mentioned friction plate is detected, the data of acquisition is: the coefficient of kinetic friction: 0.195, confficient of static friction 0.221, moves
Static friction compares 1:1.13；Wear rate is 0.85 × 10-6cm3·j.
Embodiment 3
A kind of agricultural machinery Wet-type paper friction resistance material, including following raw material: 16 parts of polyimides chopped strand, Asia
Ripple thinks 30 parts of fiber, 15 parts of p-aramid fiber fibrid；35 parts of etf wood fibre；15 parts of diatomite, 7 parts of aramid fiber abrasion resistant particles,
15 parts of ceramic hollow micro mist pearl, 16 parts of tiny balloon powder, 9 parts of elastic polyurethane friction particles, modified 14 parts of floating bead, emulsification graphite
12 parts, 3 parts of fluorographite, 7 parts of benzoxazine resins, 9 parts of ptfe emulsion, 10 parts of hydrogenated liquid butyronitrile latex, benzo
8 parts of piperazine resin solution；
Appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, neopelex are fitted
Amount.
The a diameter of 15um of described polyimides chopped strand, length is 5mm；Described Ya Bosi fibre diameter is 20 μm, long
Spend for 130 μm～250 μm；A diameter of 16～the 24um of p-aramid fiber fibrid, length is 2～3mm；The wooden fibre of described etf
Tie up a diameter of 25～35um, length is 2～3mm；Described diatomite, benzoxazine resins, fluorographite granularity all >=325
Mesh；Described ceramic hollow micro mist pearl, tiny balloon powder, the granularity of modified floating bead are 200 mesh, described elastic polyurethane friction particles
Granularity be 100～120 mesh.
Make agricultural machinery using above-mentioned raw materials as follows with the method for Wet-type paper friction plate:
(1) reinforcing fiber fento oxidation processes: described surface treated polyimides chopped strand is by polyimides
Chopped strand puts in liquor potassic permanganate, and dipping takes out after 1 hour to clean and is vacuum dried 2 hours at 90 DEG C；Described through surface
The p-aramid fiber fibrid processing, puts in Reverse Microemulsion System, and temperature control is taken out after reacting 10 hours at 50 DEG C
110 DEG C of vacuum dryings, after 5 hours, take out sealing preserve standby；
(2) pre-process: in 55 parts of 45 DEG C of water, be separately added into lauryl sodium sulfate and neopelex
Each 6 parts.Add the compound of the polyimides chopped strand that step (1) processed and p-aramid fiber fibrid, then stir
Mix 14 minutes, after being dried with clean water, obtain pretreatment material standby；130 DEG C of baking temperature, 45 minutes drying times；
(3) first Ya Bosi fiber and etf wood fibre are put into making beating in suitable quantity of water, beating consistency is 6%, beating degree is
60°sr；It is subsequently added in the pretreatment material obtain in step (2), adds 3 parts of the Pluronic F-127 solution that concentration is 0.08, use
Fluffer is discongested uniformly, adds 4 parts of the polypropylene phthalein amine aqueous solution that concentration is 0.07, obtains mixture after stirring；
(4) add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, hollow in the mixture that step (3) is obtained
Microballoon powder, elastic polyurethane friction particles, modified floating bead, emulsification graphite, fluorographite, benzoxazine resins, polytetrafluoroethylene (PTFE)
Emulsion, hydrogenated liquid butyronitrile latex, stir and are subsequently adding 4 parts of the polyacrylamide that concentration is 0.07 and stir；?
Add 3 parts of the PEO solution that concentration is 0.08 afterwards, after stirring, form the finely dispersed mixed slurry of material；
(5) manufacture paper with pulp body paper: paper substrate friction resistance material body paper of manufacturing paper with pulp on conventional paper forming equipment, pulp density is 0.07%, former
Paper quantification of 65g m-2, manufacture paper with pulp pressure 0.3mpa, obtains body paper；
(6) body paper is put into dipping, dip time 22 minutes in benzoxazine resins solution, be then dried；Baking temperature
65 DEG C, 70 minutes drying times；(7) dried agricultural machinery is carried out hot pressing with the body paper of Wet-type paper friction resistance material solid
Change, the technique of its hot-press solidifying: pressure 0.3mpa, 155 DEG C of temperature, 1 minute time, after cooling, cut into strip, obtain agriculture
Industry machinery is standby with Wet-type paper friction resistance material；
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, metal bone is pasted by stickup shaping equipment
On the central layer of frame, obtain final product agricultural machinery Wet-type paper friction plate.
Above-mentioned friction plate is detected, the data of acquisition is: the coefficient of kinetic friction: 0.205, confficient of static friction 0.220, moves
Static friction compares 1:1.07；Wear rate is 0.78 × 10-6cm3·j.
Claims (3)
1. the method that agricultural machinery makes friction plate with Wet-type paper friction resistance material, follows the steps below:
1) make agricultural machinery Wet-type paper friction resistance material body paper
(1) reinforcing fiber fento oxidation processes:
Polyimides chopped strand is put in liquor potassic permanganate and impregnates 1 ± 0.2 hour, then take out and clean at 90 ± 5 DEG C
Vacuum drying 2 ± 0.2 hours, obtains surface treated polyimides chopped strand；The quality of sulfuric acid in liquor potassic permanganate
Ratio is 50%, and the mass ratio of potassium permanganate is 1%, and remaining is water；
P-aramid fiber fibrid is put in Reverse Microemulsion System, 40 DEG C～45 DEG C of temperature, reaction took after 10～12 hours
Go out and dry 5 ± 1 hours at 100 ± 3 DEG C, obtain surface treated p-aramid fiber fibrid, take out sealing preserve standby；Instead
Composition in phase microemulsion system and part by weight are: horseradish peroxidase content is 15%, and Glycidyl methacrylate ester contains
Amount 45%, normal octane content 20%, remaining is water；
(2) pre-process: in 50～55 parts of 40～45 DEG C of water, be separately added into lauryl sodium sulfate and detergent alkylate sulphur
Each 5～6 parts of sour sodium, adds the compound of the polyimides chopped strand that step (1) processed and p-aramid fiber fibrid,
Then stir 12～14 minutes, after being dried with clean water, obtain pretreatment material standby；120～130 DEG C of baking temperature, is dried
45～55 minutes time；
(3) first Ya Bosi fiber and etf wood fibre are put into making beating in suitable quantity of water, beating consistency is 6～7%, beating degree is
50～60 ° of sr；It is subsequently added in the pretreatment material obtain in step (2), add the Pluronic F-127 that concentration is 0.05～0.12
2～3 parts of solution, is discongested uniformly with fluffer, adds 3～4 parts of the polypropylene phthalein amine aqueous solution that concentration is 0.05-0.07, stirring
Mixture is obtained after uniformly；
(4) diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon are added in the mixture that step (3) is obtained
Powder, elastic polyurethane friction particles, modified floating bead, emulsification graphite, fluorographite, benzoxazine resins, ptfe emulsion,
Hydrogenated liquid butyronitrile latex, is stirring evenly and then adding into 3～4 parts of the polyacrylamide that concentration is 0.05-0.07 and stirs；?
Add 2～3 parts of the PEO solution that concentration is 0.05～0.12 afterwards, after stirring, form the finely dispersed mixing slurry of material
Material；
(5) manufacture paper with pulp body paper: paper substrate friction resistance material body paper of manufacturing paper with pulp on conventional paper forming equipment, pulp density is 0.05%～
0.07%, body paper quantification of 55-65g m-2, manufacture paper with pulp pressure 0.2～0.3mpa, obtains agricultural machinery Wet-type paper frictional resistance material
Material body paper；
2), make agricultural machinery Wet-type paper friction plate, the steps include:
(1) body paper is put into dipping, dip time 18-22 minute in benzoxazine resins solution, be then dried；Baking temperature 50
～65 DEG C, 70～75 minutes drying times；
(2) dried agricultural machinery is carried out hot-press solidifying with Wet-type paper friction resistance material body paper, the technique of its hot-press solidifying:
Pressure 0.2-0.3mpa, 150 ± 5 DEG C of temperature, 1～2 minute time, after cooling, cut into strip, obtain agricultural machinery with wet
Formula paper substrate friction resistance material；
(3) by the agricultural machinery of strip Wet-type paper friction resistance material, metallic framework is pasted by stickup shaping equipment
On central layer.
2. according to claim 1 agricultural machinery with Wet-type paper friction resistance material make friction plate method it is characterised in that:
1st) stirring in the step (2) of step, is carried out using accurate reinforcement electric mixer.
3. according to claim 2 agricultural machinery with Wet-type paper friction resistance material make friction plate method it is characterised in that:
Conventional paper forming equipment in described step (5) is that pattern is copied and taken device.
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