CN104846690A - 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 the agricultural machinery preparation method of Wet-type paper friction resistance material and agricultural machinery Wet-type paper friction plate; Be applicable to the clutch in agricultural machinery and brakes.
Background technology
Traditional agricultural machinery wet type friction resistance material, main employing rubbery cork base Wet-type friction slice; Its advantage can utilize powder friction raw material and niggerhead material fully in material composition structure, and one-shot forming, low production cost; Shortcoming is that the pore structure of friction material is difficult to control, and the compression recovery performance affecting friction effect is unadjustable, and coefficient of friction is low, and the ratio difference of dynamic/static friction is large.Along with Modern Agricultural Machine is towards the future development of high speed, heavy duty, automation, the demand of the high property Wet-type paper friction resistance material of good heat resistance, life-span length is day by day increased, has become the hydraulic drive in united reaper, rice transplanter, seeder, farm tractor, rotary cultivator, straw field pickup baler, agriculture land leveller, agricultural ploughing machine and the main product in brakes.Therefore, developing novel agricultural machinery Wet-type paper friction resistance material and friction plate thereof, is a very urgent task.
Summary of the invention
The object of the invention is the deficiency overcoming above-mentioned background technology, a kind of agricultural machinery Wet-type paper friction resistance material and preparation method thereof is provided, made Wet-type paper friction resistance material should have that static and dynamic friction coefficient is high, stable friction performance, abrasion resistance properties good, static and dynamic friction coefficient than adjustable, that energy absorption capability is high feature, and good Oil Guide, heat conduction and resistance to elevated temperatures; Described preparation method should have simple, the easy to make easy feature of operation.
Technical scheme provided by the invention is: a kind of agricultural machinery Wet-type paper friction resistance material, and included composition and corresponding weight portion are:
1) matrix material: surface treated polyimides staple fiber 10 ~ 20 parts, Ya Bosi fiber 16 ~ 35 parts, surface treated p-aramid fiber fibrid 10 ~ 20 parts; ETF wood fibre 20 ~ 35 parts;
2) frictional property regulator: 9 ~ 18 parts, diatomite, aramid fiber abrasion resistant particles 4 ~ 8 parts, 10 ~ 20 parts, ceramic hollow micro mist pearl (also known as ceramic), 8 ~ 18 parts, tiny balloon powder (also known as tiny balloon), elastic polyurethane friction particles 6 ~ 10 parts, modification drift 10 ~ 18 parts, pearl, 8 ~ 16 parts, emulsification graphite (also known as graphite emulsion), fluorographite 1 ~ 4 part, benzoxazine colophony 5 ~ 8 parts;
3) shaping adhesive: ptfe emulsion 4 ~ 9, hydrogenated liquid butyronitrile latex 5 ~ 10 parts, benzoxazine colophony solution 7 ~ 10 parts;
Also comprise appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, appropriate neopelex.
Described polyimides staple fiber diameter is 10 ~ 20um, and length is 5 ~ 10mm; Described Ya Bosi fibre diameter is 15 ~ 25 μm, and length is 130 μm ~ 250 μm; P-aramid fiber fibrid diameter is 16 ~ 24um, and length is 2 ~ 3mm; Described ETF wood fibre diameter is 25 ~ 35um, and length is 2 ~ 3mm.
In described various raw material, the granularity of diatomite, benzoxazine colophony, fluorographite all >=325 orders, the granularity of described ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl is 150 ~ 250 orders, and the granularity of described elastic polyurethane friction particles is 100 ~ 120 orders.
In described benzoxazine colophony solution, the part by weight of benzoxazine colophony and alcohol is 1: 3 ~ 5.
A preparation method for agricultural machinery Wet-type paper friction plate, carry out according to following steps:
One, agricultural machinery Wet-type paper friction resistance material body paper is made
(1) fortifying fibre fento oxidation processes:
Polyimides staple fiber is dropped in liquor potassic permanganate and floods 1 ± 0.2 hour, then take out and clean 90 ± 5 DEG C of vacuumizes 2 ± 0.2 hours, obtain surface treated polyimides staple fiber; In liquor potassic permanganate, the mass ratio of sulfuric acid is 50%, and the mass ratio of potassium permanganate is 1%, and all the other are water;
P-aramid fiber fibrid is dropped in Reverse Microemulsion System, temperature 40 DEG C ~ 45 DEG C, react after 10 ~ 12 hours and take out 100 ± 3 DEG C of oven dry 5 ± 1 hours, obtain surface treated p-aramid fiber fibrid, take out sealing and save backup; Composition in Reverse Microemulsion System and part by weight are: horseradish peroxidase content is 15%, Glycidyl methacrylate ester content 45%, normal octane content 20%, and all the other are water;
(2) preliminary treatment: in the water of 50 ~ 55 parts of 40 ~ 45 DEG C, add lauryl sodium sulfate and each 5 ~ 6 parts of neopelex respectively, add the compound of polyimides staple fiber that step (1) processed and p-aramid fiber fibrid again, then 12 ~ 14 minutes are stirred, after clean water drying, obtain preliminary treatment material for subsequent use; Baking temperature 120 ~ 130 DEG C, 45 ~ 55 minutes drying times;
(3) first Ya Bosi fiber and ETF wood fibre are put into suitable quantity of water to pull an oar, beating consistency is 6 ~ 7%, and beating degree is 50 ~ 60 ° of SR; Then add in the preliminary treatment material obtained in step (2), add the Pluronic F-127 solution 2 ~ 3 parts that concentration is 0.05 ~ 0.12, discongest evenly with fluffer, then add the polypropylene phthalein amine aqueous solution 3 ~ 4 parts that concentration is 0.05-0.07, after stirring, obtain mixture;
(4) in the mixture that step (3) is obtained, add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, elastic polyurethane friction particles, modification drift pearl, emulsification graphite, fluorographite, benzoxazine colophony, ptfe emulsion, hydrogenated liquid butyronitrile latex, add polyacrylamide 3 ~ 4 parts that concentration is 0.05-0.07 after stirring and stir; Finally add the poly(ethylene oxide) solution 2 ~ 3 parts that concentration is 0.05 ~ 0.12, after stirring, form the finely dispersed mixed slurry of material;
(5) to 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%, and body paper is quantitatively 55-65gm
-2, manufacture paper with pulp pressure 0.2 ~ 0.3Mpa, obtains agricultural machinery Wet-type paper friction resistance material body paper;
Two, make agricultural machinery Wet-type paper friction plate, the steps include:
(1) body paper is put into benzoxazine colophony solution to flood, dip time 18-22 minute, then dry; Baking temperature 50 ~ 65 DEG C, 70 ~ 75 minutes drying times;
(2) dried agricultural machinery Wet-type paper friction resistance material body paper is carried out hot-press solidifying, the technique of its hot-press solidifying: pressure 0.2-0.3MPa, temperature 150 ± 5 DEG C, 1 ~ 2 minute time, cut into strip after cooling, obtain agricultural machinery Wet-type paper friction resistance material for subsequent use;
(3) by the agricultural machinery of strip Wet-type paper friction resistance material, to be pasted on the central layer of metallic framework by stickup shaping equipment.
Stirring in described step (2), adopts accurate reinforcement electric mixer to carry out.
Conventional paper forming equipment in described step (5) is that pattern is copied and got device.
The invention has the beneficial effects as follows: due in one-shot forming papermaking process, the uniformity of body paper material is controlled by beating process and interpolation related auxiliaries, porosity, by adding elastic polyurethane friction particles in formula, hydrogenated butyronitrile latex, ptfe emulsion ensure that body paper has higher static friction performance and the performance such as compression resilience and less permanent deformation, thus ensure that the static and dynamic friction coefficient stability of agricultural machinery Wet-type paper friction resistance material and friction plate thereof, product is high temperature resistant, oil resistant Oil Guide is all better, effectively improve the physical and mechanical properties of agricultural machinery friction resistance material, again by adding aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl, emulsification graphite, fluorographite in formula, improve its coefficient of kinetic friction, adjustment static and dynamic friction coefficient ratio, improves the toughness of friction resistance material, reduces the rate of wear of friction resistance material.According to national standard employing MM-1000II type friction and wear behavior testing machine (Xi'an Shuntong Institute Of Electrical And Applied Technology's production) to the data that friction plate provided by the invention detects rear acquisition be: the coefficient of kinetic friction 0.190 ~ 0.205, confficient of static friction 0.213 ~ 0.220, sound friction ratio 1:1.07 ~ 1.15; Wear rate 0.78 ~ 0.95 × 10
-6cm
3j.
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 that contrast is conventional; Wear rate 1.5 ~ 2.0 × 10
-6cm
3j) known afterwards: all technical that this invention obtains all will be far superior to current rubbery cork base Wet-type friction slice.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram adopting agricultural machinery Wet-type paper friction resistance material friction plate of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional structure schematic diagram.
Detailed description of the invention
A body paper for agricultural machinery Wet-type paper friction resistance material, refers to the homogeneous many materials body paper first utilizing wet method one-shot forming papermaking process to produce; This body paper, after dipping, cross cutting, automatic cycle monolithic adhering processes, then by the friction brake wafer that superimposed hot-forming method is made, is widely used in the clutch that uses in farm machinery and brakes, for transmitting torque, deceleration and braking.
The Wet-type paper friction plate of agricultural machinery as shown in the figure, the friction plate central layer 1 comprising metallic framework and the double-edged friction resistance material layer 2 of the central layer being pasted onto friction plate metallic framework; This friction resistance material layer forms by multiple paper substrate friction block 2-1 is regularly arranged.
Described polyacrylamide solution is made up of polyacrylamide and water, and concentration is the percentage by weight in polyacrylamide solution shared by polyacrylamide; Described Pluronic F-127 solution is made up of Pluronic F-127 and water, and concentration is the percentage by weight in Pluronic F-127 solution shared by Pluronic F-127.
The present invention adopts benzoxazine colophony solution, adds alcohol dissolve and form by the benzoxazine colophony of solid-state shape; The part by weight of benzoxazine colophony and alcohol is 1: 3 ~ 5.
In described Reverse Microemulsion System, be take horseradish peroxidase as catalyst and Glycidyl methacrylate ester be the mixed solution of monomer and water and normal octane.
Elastic polyurethane friction particles (the i.e. paper substrate friction resistance material polyurethane rubber base elastic-friction particle adopted in the present invention, separate case application), the composition comprised and weight portion are: polyurethane rubber 70 ~ 85 parts, methyl vinyl silicone rubber 5 ~ 15 parts, promoter PZ 0.5 ~ 3 part, anti-aging agent RD 1 ~ 3 part, white carbon 3 ~ 6 parts, activated magnesia 2 ~ 5 parts, stearic acid 0.5 ~ 0.8 part, crosslink agent DCP 1.5 ~ 4, 0.5 ~ 3 part, sulphur, 6 ~ 10 parts, modified by alkyl phenol phenolic resins, Fluorspar Powder 1 ~ 3 part, silicon-carbide particle 1 ~ 5 part, magnesium borate crystal whisker 4 ~ 10 parts.The fineness of this elastic-friction particle is 100 order ~ 120 orders.
The diameter of described magnesium borate crystal whisker fiber 3 ~ 5 μm, length 30 ~ 50 μm.
In described various composition, granularity≤325 order of promoter PZ, anti-aging agent RD, white carbon, activated magnesia, stearic acid, crosslink agent DCP, stearic acid, sulphur, modified by alkyl phenol phenolic resins, Fluorspar Powder, silicon-carbide particle.
The preparation method of above-mentioned elastic polyurethane friction particles, carries out according to following steps;
1) various raw material are taken by formula for subsequent use;
2) first polyurethane rubber, methyl vinyl silicone rubber, promoter PZ, anti-aging agent RD, white carbon, activated magnesia, stearic acid, crosslink agent DCP, sulphur, modified by alkyl phenol phenolic resins, Fluorspar Powder, silicon-carbide particle, magnesium borate crystal whisker are dropped into mixing 16 ~ 18 minutes of the mixing chamber of twin-screw continuous mixer, the temperature of mixing chamber is set in 120 DEG C ~ 130 DEG C; Then the mixing compound completed enters extrusion molding in injection sulfurization discharge chamber, and injection sulfurization temperature is set in 150 DEG C ~ 160 DEG C, note pressure pressure 50MPa ~ 60MPa;
3) make particle: by adhesive tape shaping for twin-screw continuous mixer, drop in disintegrating machine and be broken into 100 order ~ 120 object caoutchouc elasticity particles;
4) caoutchouc elasticity is granule modified: by the caoutchouc elasticity particle obtained, dipping (i.e. complete submergence) in ptfe emulsion 20 ~ 25 minutes, and then vacuum drying oven 100 ~ 110 DEG C of dry for standby are put in taking-up.
Making step 4) described in ptfe emulsion solid content more than 60%.
The aramid fiber abrasion resistant particles (application number is 201410538789.6) that the present invention adopts, its preparation method carries out according to following steps:
(1) coupling agent preliminary treatment: first ppta-pulp fibre and aramid short fiber are put into coupling agent solution dipping and take out and dry after 30 ~ 35 minutes;
(2) batch mixing: by the ppta-pulp fibre that processed and aramid short fiber, drops in high speed mixer, mixes 4 ~ 5 minutes, then take out for subsequent use in high speed mixer;
(3) pull an oar: the ppta-pulp fibre first step (2) processed and aramid short fiber are put in liquid acrylonitrile butadiene rubber and pulled an oar, and beating consistency is 3 ~ 5%, and beating degree is 35 ~ 45 ° of SR; Then add the Pluronic F-127 solution that concentration is 0.05 ~ 0.08, discongest with fluffer and evenly form the finely dispersed slurry of material;
(4) flood: by slurry obtained for step (3) 90 ~ 100 DEG C of drying in oven, the slurry after oven dry is put in solvent-borne type cashew nut shell oil liquid resin and floods 20 ~ 35 minutes;
(5) kneading: dropped in masticator by slurry obtained for step (4), and add liquid styrene butadiene rubber simultaneously, kneading temperature controls at 30 ~ 40 DEG C, and the kneading time was at 6 ~ 7 minutes.
(6) granulation: compound obtained for step (5) is dropped into degassed wheel in comminutor and carries out granulation; The aramid fiber abrasion resistant particles obtained is spherical or cylindric, and granularity is between 40 ~ 60 orders, and hollow structure inside, one deck has been wrapped up by liquid styrene butadiene rubber and hydrogenated butyronitrile latex compounds in surface, has 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 all the other are water.
Except indicating especially, " part " of the present invention is weight portion.
A kind of body paper of agricultural machinery Wet-type paper friction resistance material and the fabrication processing of friction plate thereof are: Feedstock treating → batching → making beating → with slurry discongests → and copy paper → drying → shaping → impregnated resin stick → inspection → heat cure → cut bar → automatic chip mounting → inspection → hot-press solidifying → packaging warehouse-in.
The equal outsourcing of other raw material in the present invention except elastic polyurethane friction particles obtains.
Further illustrate below in conjunction with specific embodiment.
Embodiment 1
A kind of agricultural machinery Wet-type paper friction resistance material, comprises following raw material: polyimides staple fiber 10 parts, Ya Bosi fiber 20 parts, p-aramid fiber fibrid 12 parts; ETF wood fibre 25 parts; 9 parts, diatomite, aramid fiber abrasion resistant particles 4 parts, 10 parts, ceramic hollow micro mist pearl, 8 parts, tiny balloon powder, elastic polyurethane friction particles 6 parts, modification drift 10 parts, pearl, 8 parts, emulsification graphite, fluorographite 1.5 parts, benzoxazine colophony 5 parts, ptfe emulsion 4 parts, hydrogenated liquid butyronitrile latex 7 parts, benzoxazine colophony solution 7 parts;
Polyacrylamide is appropriate, Pluronic F-127 is appropriate, lauryl sodium sulfate is appropriate, neopelex is appropriate.
Described polyimides staple fiber diameter is 15um, and length is 5mm; Described Ya Bosi fibre diameter is 20 μm, and length is 130 μm ~ 250 μm; P-aramid fiber fibrid diameter is 16 ~ 24um, and length is 2 ~ 3mm; Described ETF wood fibre diameter is 25 ~ 35um, and length is 2 ~ 3mm; The granularity of described diatomite, benzoxazine colophony, fluorographite all >=325 orders; The granularity of described ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl is 200 orders, and the granularity of described elastic polyurethane friction particles is 100 ~ 120 orders.
Adopt the method for above-mentioned raw materials making agricultural machinery Wet-type paper friction plate as follows:
(1) fortifying fibre fento oxidation processes: described surface treated polyimides staple fiber is dropped in liquor potassic permanganate by polyimides staple fiber, floods taking-up after 1 hour and cleans 90 DEG C of vacuumizes 2 hours; Described surface treated p-aramid fiber fibrid, drops in Reverse Microemulsion System, and temperature controls to take out at 100 DEG C of vacuum dryings after 5 hours 45 DEG C of reactions after 10 hours, takes out sealing and saves backup;
(2) preliminary treatment: in the water of 50 parts of 45 DEG C, add lauryl sodium sulfate and each 5 parts of neopelex respectively, add the compound of polyimides staple fiber that step (1) processed and p-aramid fiber fibrid again, then stir 12 minutes, after clean water drying, obtain preliminary treatment material for subsequent use; Baking temperature 120 DEG C, 55 minutes drying times;
(3) first Ya Bosi fiber and ETF wood fibre are put into suitable quantity of water to pull an oar, beating consistency is 6%, and beating degree is 50 ° of SR; Then add in the preliminary treatment material obtained in step (2), add the Pluronic F-127 solution 2 parts that concentration is 0.06, discongest evenly with fluffer, then add the polypropylene phthalein amine aqueous solution 3 parts that concentration is 0.05, after stirring, obtain mixture;
(4) in the mixture that step (3) is obtained, add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, elastic polyurethane friction particles, modification drift pearl, emulsification graphite, fluorographite, benzoxazine colophony, ptfe emulsion, hydrogenated liquid butyronitrile latex, then stir adds concentration and is the polyacrylamide 3 parts of 0.05 and stirs; Finally add the poly(ethylene oxide) solution 2 parts that concentration is 0.05, after stirring, form the finely dispersed mixed slurry of material;
(5) to 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%, and body paper is quantitatively 55gm
-2, manufacture paper with pulp pressure 0.2Mpa, obtains body paper;
(6) body paper is put into benzoxazine colophony solution to flood, dip time 18 minutes, then dry; Baking temperature 50 DEG C, 75 minutes drying times;
(7) body paper of dried agricultural machinery Wet-type paper friction resistance material is carried out hot-press solidifying, the technique of its hot-press solidifying: pressure 0.2MPa, temperature 145 DEG C, 2 minutes time, cut into strip after cooling, obtain agricultural machinery Wet-type paper friction resistance material for subsequent use;
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, paste on the central layer of metallic framework by stickup shaping equipment, obtain agricultural machinery Wet-type paper friction plate.
Detect above-mentioned paper-base friction wafer, the data of acquisition are: 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
-6cm
3j.
Embodiment 2
A kind of agricultural machinery Wet-type paper friction resistance material, comprises following raw material: polyimides staple fiber 12 parts, Ya Bosi fiber 25 parts, p-aramid fiber fibrid 12 parts; ETF wood fibre 28 parts; 11 parts, diatomite, aramid fiber abrasion resistant particles 5 parts, 12 parts, ceramic hollow micro mist pearl, 9 parts, tiny balloon powder, elastic polyurethane friction particles 8 parts, modification drift 12 parts, pearl, 9 parts, emulsification graphite, fluorographite 2 parts, benzoxazine colophony 6 parts, ptfe emulsion 5 parts, hydrogenated liquid butyronitrile latex 8 parts, benzoxazine colophony solution 7.5 parts;
Polyacrylamide is appropriate, Pluronic F-127 is appropriate, lauryl sodium sulfate is appropriate, neopelex is appropriate.
Described polyimides staple fiber diameter is 15um, and length is 5mm; Described Ya Bosi fibre diameter is 20 μm, and length is 130 μm ~ 250 μm; P-aramid fiber fibrid diameter is 16 ~ 24um, and length is 2 ~ 3mm; Described ETF wood fibre diameter is 25 ~ 35um, and length is 2 ~ 3mm; The granularity of described diatomite, benzoxazine colophony, fluorographite all >=325 orders; The granularity of described ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl is 200 orders, and the granularity of described elastic polyurethane friction particles is 100 ~ 120 orders.
Adopt the method for above-mentioned raw materials making agricultural machinery Wet-type paper friction plate as follows:
(1) fortifying fibre fento oxidation processes: described surface treated polyimides staple fiber is dropped in liquor potassic permanganate by polyimides staple fiber, floods taking-up after 1 hour and cleans 90 DEG C of vacuumizes 2 hours; Described surface treated p-aramid fiber fibrid, drops in Reverse Microemulsion System, and temperature controls to take out at 110 DEG C of vacuum dryings after 5 hours 50 DEG C of reactions after 10 hours, takes out sealing and saves backup;
(2) preliminary treatment: in the water of 52 parts of 40 DEG C, adds lauryl sodium sulfate and each 5 parts of neopelex respectively.Add the compound of polyimides staple fiber that step (1) processed and p-aramid fiber fibrid again, then stir 12 minutes, after clean water drying, obtain preliminary treatment material for subsequent use; Baking temperature 125 DEG C, 50 minutes drying times;
(3) first Ya Bosi fiber and ETF wood fibre fiber are put into suitable quantity of water to pull an oar, beating consistency is 6%, and beating degree is 55 ° of SR; Then add in the preliminary treatment material obtained in step (2), add the Pluronic F-127 solution 2 parts that concentration is 0.06, discongest evenly with fluffer, then add the polypropylene phthalein amine aqueous solution 3 parts that concentration is 0.05, after stirring, obtain mixture;
(4) in the mixture that step (3) is obtained, add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, elastic polyurethane friction particles, modification drift pearl, emulsification graphite, fluorographite, benzoxazine colophony, ptfe emulsion, hydrogenated liquid butyronitrile latex, then stir adds concentration and is the polyacrylamide 3 parts of 0.05 and stirs; Finally add the poly(ethylene oxide) solution 2 parts that concentration is 0.05, after stirring, form the finely dispersed mixed slurry of material;
(5) to 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%, and body paper is quantitatively 60gm
-2, manufacture paper with pulp pressure 0.3Mpa, obtains body paper;
(6) body paper is put into benzoxazine colophony solution to flood, dip time 20 minutes, then dry; Baking temperature 60 DEG C, 72 minutes drying times;
(7) body paper of dried agricultural machinery Wet-type paper friction resistance material is carried out hot-press solidifying, the technique of its hot-press solidifying: pressure 0.2MPa, temperature 150 DEG C, 1.5 minutes time, cut into strip after cooling, obtain agricultural machinery Wet-type paper friction resistance material for subsequent use;
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, paste on the central layer of metallic framework by stickup shaping equipment, obtain agricultural machinery Wet-type paper friction plate;
Detect above-mentioned friction plate, the data of acquisition are: the coefficient of kinetic friction: 0.195, confficient of static friction 0.221, sound friction ratio 1:1.13; Wear rate is 0.85 × 10
-6cm
3j.
Embodiment 3
A kind of agricultural machinery Wet-type paper friction resistance material, comprises following raw material: polyimides staple fiber 16 parts, Ya Bosi fiber 30 parts, p-aramid fiber fibrid 15 parts; ETF wood fibre 35 parts; 15 parts, diatomite, aramid fiber abrasion resistant particles 7 parts, 15 parts, ceramic hollow micro mist pearl, 16 parts, tiny balloon powder, elastic polyurethane friction particles 9 parts, modification drift 14 parts, pearl, 12 parts, emulsification graphite, fluorographite 3 parts, benzoxazine colophony 7 parts, ptfe emulsion 9 parts, hydrogenated liquid butyronitrile latex 10 parts, benzoxazine colophony solution 8 parts;
Polyacrylamide is appropriate, Pluronic F-127 is appropriate, lauryl sodium sulfate is appropriate, neopelex is appropriate.
Described polyimides staple fiber diameter is 15um, and length is 5mm; Described Ya Bosi fibre diameter is 20 μm, and length is 130 μm ~ 250 μm; P-aramid fiber fibrid diameter is 16 ~ 24um, and length is 2 ~ 3mm; Described ETF wood fibre diameter is 25 ~ 35um, and length is 2 ~ 3mm; The granularity of described diatomite, benzoxazine colophony, fluorographite all >=325 orders; The granularity of described ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl is 200 orders, and the granularity of described elastic polyurethane friction particles is 100 ~ 120 orders.
Adopt the method for above-mentioned raw materials making agricultural machinery Wet-type paper friction plate as follows:
(1) fortifying fibre fento oxidation processes: described surface treated polyimides staple fiber is dropped in liquor potassic permanganate by polyimides staple fiber, floods taking-up after 1 hour and cleans 90 DEG C of vacuumizes 2 hours; Described surface treated p-aramid fiber fibrid, drops in Reverse Microemulsion System, and temperature controls to take out at 110 DEG C of vacuum dryings after 5 hours 50 DEG C of reactions after 10 hours, takes out sealing and saves backup;
(2) preliminary treatment: in the water of 55 parts of 45 DEG C, adds lauryl sodium sulfate and each 6 parts of neopelex respectively.Add the compound of polyimides staple fiber that step (1) processed and p-aramid fiber fibrid again, then stir 14 minutes, after clean water drying, obtain preliminary treatment material for subsequent use; Baking temperature 130 DEG C, 45 minutes drying times;
(3) first Ya Bosi fiber and ETF wood fibre are put into suitable quantity of water to pull an oar, beating consistency is 6%, and beating degree is 60 ° of SR; Then add in the preliminary treatment material obtained in step (2), add the Pluronic F-127 solution 3 parts that concentration is 0.08, discongest evenly with fluffer, then add the polypropylene phthalein amine aqueous solution 4 parts that concentration is 0.07, after stirring, obtain mixture;
(4) in the mixture that step (3) is obtained, add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, elastic polyurethane friction particles, modification drift pearl, emulsification graphite, fluorographite, benzoxazine colophony, ptfe emulsion, hydrogenated liquid butyronitrile latex, then stir adds concentration and is the polyacrylamide 4 parts of 0.07 and stirs; Finally add the poly(ethylene oxide) solution 3 parts that concentration is 0.08, after stirring, form the finely dispersed mixed slurry of material;
(5) to 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%, and body paper is quantitatively 65gm
-2, manufacture paper with pulp pressure 0.3Mpa, obtains body paper;
(6) body paper is put into benzoxazine colophony solution to flood, dip time 22 minutes, then dry; Baking temperature 65 DEG C, 70 minutes drying times; (7) body paper of dried agricultural machinery Wet-type paper friction resistance material is carried out hot-press solidifying, the technique of its hot-press solidifying: pressure 0.3MPa, temperature 155 DEG C, 1 minute time, cut into strip after cooling, obtain agricultural machinery Wet-type paper friction resistance material for subsequent use;
(8) by the agricultural machinery of strip Wet-type paper friction resistance material, paste on the central layer of metallic framework by stickup shaping equipment, obtain agricultural machinery Wet-type paper friction plate.
Detect above-mentioned friction plate, the data of acquisition are: the coefficient of kinetic friction: 0.205, confficient of static friction 0.220, sound friction ratio 1:1.07; Wear rate is 0.78 × 10
-6cm
3j.
Claims (7)
1. an agricultural machinery Wet-type paper friction resistance material, it composition comprised and corresponding weight portion are:
1), matrix material: surface treated polyimides staple fiber 10 ~ 20 parts, Ya Bosi fiber 16 ~ 35 parts, surface treated p-aramid fiber fibrid 10 ~ 20 parts; ETF wood fibre 20 ~ 35 parts;
2), frictional property regulator: 9 ~ 18 parts, diatomite, aramid fiber abrasion resistant particles 4 ~ 8 parts, 10 ~ 20 parts, ceramic hollow micro mist pearl, 8 ~ 18 parts, tiny balloon powder, elastic polyurethane friction particles 6 ~ 10 parts, modification drift 10 ~ 18 parts, pearl, 8 ~ 16 parts, emulsification graphite, fluorographite 1 ~ 4 part, benzoxazine colophony 5 ~ 8 parts;
3), shaping adhesive: ptfe emulsion 4 ~ 9, hydrogenated liquid butyronitrile latex 5 ~ 10 parts, benzoxazine colophony solution 7 ~ 10 parts;
Also comprise appropriate polyacrylamide, appropriate Pluronic F-127, appropriate lauryl sodium sulfate, appropriate neopelex.
2. agricultural machinery Wet-type paper friction resistance material according to claim 1, is characterized in that: described polyimides staple fiber diameter is 10 ~ 20um, and length is 5 ~ 10mm; Described Ya Bosi fibre diameter is 15 ~ 25 μm, and length is 130 μm ~ 250 μm; P-aramid fiber fibrid diameter is 16 ~ 24um, and length is 2 ~ 3mm; Described ETF wood fibre diameter is 25 ~ 35um, and length is 2 ~ 3mm.
3. agricultural machinery Wet-type paper friction resistance material according to claim 2, it is characterized in that: in described various raw material, the granularity of diatomite, benzoxazine colophony, fluorographite all >=325 orders, the granularity of described ceramic hollow micro mist pearl, tiny balloon powder, modification drift pearl is 150 ~ 250 orders, and the granularity of described elastic polyurethane friction particles is 100 ~ 120 orders.
4. agricultural machinery Wet-type paper friction resistance material according to claim 3, is characterized in that: in described benzoxazine colophony solution, the part by weight of benzoxazine colophony and alcohol is 1: 3 ~ 5.
5. adopt agricultural machinery Wet-type paper friction resistance material described in claim 1 to make the method for friction plate, carry out according to following steps:
1) agricultural machinery Wet-type paper friction resistance material body paper is made
(1) fortifying fibre fento oxidation processes:
Polyimides staple fiber is dropped in liquor potassic permanganate and floods 1 ± 0.2 hour, then take out and clean 90 ± 5 DEG C of vacuumizes 2 ± 0.2 hours, obtain surface treated polyimides staple fiber; In liquor potassic permanganate, the mass ratio of sulfuric acid is 50%, and the mass ratio of potassium permanganate is 1%, and all the other are water;
P-aramid fiber fibrid is dropped in Reverse Microemulsion System, temperature 40 DEG C ~ 45 DEG C, react after 10 ~ 12 hours and take out 100 ± 3 DEG C of oven dry 5 ± 1 hours, obtain surface treated p-aramid fiber fibrid, take out sealing and save backup; Composition in Reverse Microemulsion System and part by weight are: horseradish peroxidase content is 15%, Glycidyl methacrylate ester content 45%, normal octane content 20%, and all the other are water;
(2) preliminary treatment: in the water of 50 ~ 55 parts of 40 ~ 45 DEG C, add lauryl sodium sulfate and each 5 ~ 6 parts of neopelex respectively, add the compound of polyimides staple fiber that step (1) processed and p-aramid fiber fibrid again, then 12 ~ 14 minutes are stirred, after clean water drying, obtain preliminary treatment material for subsequent use; Baking temperature 120 ~ 130 DEG C, 45 ~ 55 minutes drying times;
(3) first Ya Bosi fiber and ETF wood fibre are put into suitable quantity of water to pull an oar, beating consistency is 6 ~ 7%, and beating degree is 50 ~ 60 ° of SR; Then add in the preliminary treatment material obtained in step (2), add the Pluronic F-127 solution 2 ~ 3 parts that concentration is 0.05 ~ 0.12, discongest evenly with fluffer, then add the polypropylene phthalein amine aqueous solution 3 ~ 4 parts that concentration is 0.05-0.07, after stirring, obtain mixture;
(4) in the mixture that step (3) is obtained, add diatomite, aramid fiber abrasion resistant particles, ceramic hollow micro mist pearl, tiny balloon powder, elastic polyurethane friction particles, modification drift pearl, emulsification graphite, fluorographite, benzoxazine colophony, ptfe emulsion, hydrogenated liquid butyronitrile latex, add polyacrylamide 3 ~ 4 parts that concentration is 0.05-0.07 after stirring and stir; Finally add the poly(ethylene oxide) solution 2 ~ 3 parts that concentration is 0.05 ~ 0.12, after stirring, form the finely dispersed mixed slurry of material;
(5) to 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%, and body paper is quantitatively 55-65gm
-2, manufacture paper with pulp pressure 0.2 ~ 0.3Mpa, obtains agricultural machinery Wet-type paper friction resistance material body paper;
2), make agricultural machinery Wet-type paper friction plate, the steps include:
(1) body paper is put into benzoxazine colophony solution to flood, dip time 18-22 minute, then dry; Baking temperature 50 ~ 65 DEG C, 70 ~ 75 minutes drying times;
(2) dried agricultural machinery Wet-type paper friction resistance material body paper is carried out hot-press solidifying, the technique of its hot-press solidifying: pressure 0.2-0.3MPa, temperature 150 ± 5 DEG C, 1 ~ 2 minute time, cut into strip after cooling, obtain agricultural machinery Wet-type paper friction resistance material;
(3) by the agricultural machinery of strip Wet-type paper friction resistance material, to be pasted on the central layer of metallic framework by stickup shaping equipment.
6. adopt agricultural machinery Wet-type paper friction resistance material to make the method for friction plate according to claim 5, it is characterized in that: the stirring in described step (2), adopt accurate reinforcement electric mixer to carry out.
7. adopt agricultural machinery Wet-type paper friction resistance material to make the method for friction plate according to claim 6, it is characterized in that: the conventional paper forming equipment in described step (5) is that pattern is copied and got device.
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Effective date of registration: 20190111 Address after: 311322 130 Longgang Street, Longgang Town, Linan District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou moistening spring science and Technology Co., Ltd. Address before: 311322 Science and Technology Building 606, No. 29 Jinjiang Road, Jincheng Street, Linan City, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU SANGLA TECHNOLOGY CO., LTD. |