CN102993635B - Method for preparing clutch facing through taking water soluble phenol-formaldehyde resin as adhesion agent - Google Patents
Method for preparing clutch facing through taking water soluble phenol-formaldehyde resin as adhesion agent Download PDFInfo
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- CN102993635B CN102993635B CN201210512743.8A CN201210512743A CN102993635B CN 102993635 B CN102993635 B CN 102993635B CN 201210512743 A CN201210512743 A CN 201210512743A CN 102993635 B CN102993635 B CN 102993635B
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- soluble phenol
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229920001568 phenolic resin Polymers 0.000 title claims abstract description 24
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 title abstract description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 27
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 229960000892 attapulgite Drugs 0.000 claims abstract description 17
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000005011 phenolic resin Substances 0.000 claims description 79
- 239000000243 solution Substances 0.000 claims description 47
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 239000011230 binding agent Substances 0.000 claims description 26
- 239000000843 powder Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 18
- 238000012986 modification Methods 0.000 claims description 17
- 230000004048 modification Effects 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 14
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000007731 hot pressing Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910021536 Zeolite Inorganic materials 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 8
- 239000010457 zeolite Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 7
- 239000010428 baryte Substances 0.000 claims description 7
- 229910052601 baryte Inorganic materials 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000008098 formaldehyde solution Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 12
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000007669 thermal treatment Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000005562 fading Methods 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 13
- 229920003987 resole Polymers 0.000 description 11
- 230000004580 weight loss Effects 0.000 description 9
- 238000004513 sizing Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 4
- 241000863032 Trieres Species 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920013649 Paracril Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Landscapes
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a method for preparing a clutch facing through taking water soluble phenol-formaldehyde resin as an adhesion agent. The method adopts the water soluble phenol-formaldehyde resin which is multiply modified by polyvinyl alcohol, nanoscale attapulgite and micron-order copper powder as the adhesion agent, the water soluble phenol-formaldehyde resin, a friction performance conditioning agent and water are mixed to produce slurry, fibers are soaked in the slurry, are dried and are wound to form a parison, the parison is then subjected to hot-press forming to form the facing, grinding and drilling are carried out after the thermal treatment, the clutch facing is obtained. The modified adhesion agent has high solubility, cohesiveness, toughness, heat resistance, thermal fading resistance and abrasion resistance; and the clutch facing which is produced through the adhesion agent is low in cost, green and environment-friendly, can bear impact force during the processing and using processes, cannot crack and has high thermal stability, high and stable friction coefficient and low abrasion resistance.
Description
Technical field
The present invention relates to clutch surface technical field used in a kind of motor drive system, be specifically related to a kind ofly take water soluble phenol resin solution and prepare the method for high-performance motor vehicle clutch surface as binding agent.
Background technology
The friction materials that clutch surface is used as motor vehicle transmission, mainly take resol, rubber etc. is binding agent, and the fortifying fibre etc. of take is framework material, and various functional fillers are as increased the formations such as filler, wear resistant filler etc. are packing material of rubbing.The production technique of traditional clutch coupling be take wet processing as main, and flow process is as follows: (1), by binding agent organic solvent dissolutions such as resol, rubber, adds filler to be uniformly mixed and makes slurry; (2) by macrofiber dipping sizing agent, Wrapping formed after drying; (3) by hot-forming, then process and obtain clutch surface flake products through thermal treatment, cross grinding, punching or Drilling operation.
Development along with modern industry, the clutch surface of motor vehicles has been proposed to higher performance requriements, as require clutch surface frictional coefficient when use temperature reaches 350 degrees Celsius to be greater than 0.25, wear rate is less than 0.7, and adopts the clutch surface of traditional binding agent to be difficult to reach this requirement.Meanwhile, in traditional clutch surface manufacture craft, often use soluble phenolic resin to make slurry, therefore need to use a large amount of organic solvent dissolution resol and rubber.These solvent evaporates not only cause great environmental pollution in air, and have produced in process of production great potential safety hazard, in addition owing to using a large amount of organic solvents also to increase the cost of manufacturing clutch surface.
Use water soluble phenol resin to produce as binding agent the use that clutch surface can be avoided organic solvent, safety and environmental protection, but clutch surface is in friction process, the temperature of friction surface is higher, and the decomposition temperature of water soluble phenol resin is 250 ℃ of left and right, thermotolerance is lower, therefore large in this high-temperature Region Decomposition amount, the material decomposing forms one deck gaseous state or liquid film at friction surface, cause the frictional coefficient of clutch surface to reduce, when serious, the safe operation of vehicle is formed to larger threat.In addition, because the fragility of water soluble phenol resin is larger, after fiber impregnation slurry is dried, slurry easily comes off from fiber surface, causes the clutch surface flake products of preparation easily to ftracture in processing or use procedure, affects the normal use of product.
For this reason, people endeavour research always and how water soluble phenol resin are carried out to modification, make the clutch surface that the water soluble phenol resin after modification prepares as sizing agent can bear the surging force in processing and use procedure and not ftracture, when high temperature, can keep compared with high and stable frictional coefficient and less abradability simultaneously.
Publication number is that in the patent application of CN101655128A, to adopt water soluble phenol resin be binding agent, in order to improve its fragility problem, add paracril as toughner, but Powdered acrylonitrile-butadiene rubber is expensive, cause cost to increase, need in addition to use a certain amount of organic reagent to dissolve nitrile rubber and make, thereby cause environmental pollution and use inconvenience.Publication number is to adopt a kind of latex modified water soluble phenol resin as the sizing agent of preparing clutch surface in the patent application of CN101285512A, but because the existence of latex need to add the auxiliary agents such as anti-layering agent, tensio-active agent to prevent modified phenolic resins generation layering, thereby the preparation technology of modified phenolic resins is loaded down with trivial details, and also increased cost.
Summary of the invention
Technical problem to be solved by this invention is the problem existing in above-mentioned clutch surface preparation, providing a kind of take water soluble phenol resin solution and prepares the method for clutch surface as binding agent, the method preparation cost is low, environmental protection, can make the clutch surface that wear resistance is good, frictional coefficient is higher and stable.
This clutch surface adopts the water soluble phenol resin of modification to replace soluble phenolic resin and rubber, and the clutch surface of preparation not only can bear the surging force of processing and use procedure and not ftracture, and possess excellent friction and wear behavior, and reduced greatly cost.
The technical scheme that the present invention realizes above-mentioned technical purpose to be provided is: a kind ofly take water soluble phenol resin solution and prepare the method for clutch surface as binding agent, comprise the steps:
Step 1, water soluble phenol resin solution and frictional property regulator are mixed, add suitable quantity of water, stir and make slurry;
Described water soluble phenol resin solution is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to mass fraction meter, the phenolic resin aqueous solution of described polyvinyl alcohol modification is by the formalin of the phenol of 100 mass parts, 110 ~ 120 mass parts, the polyvinyl alcohol of 1 ~ 20 mass parts, and the basic catalyst hybrid reaction of 4 ~ 10 mass parts forms, wherein the mass percent concentration of formalin is 30% ~ 45%; According to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, be 100 mass fraction meters, described nano level attapulgite content is 1 ~ 4 mass parts, and Micron-Sized Copper Powders Coated content is 1 ~ 2 mass parts;
Step 2, by fiber impregnation slurry, after drying, be wound around and become parison;
Step 3, by parison hot-forming be dough sheet, more after heat treatment polish, hole, obtain clutch surface.
In described water soluble phenol resin solution, basic catalyst includes but not limited to one or several in ammoniacal liquor, hexamethylenetetramine, sodium carbonate, amine, basic metal, alkaline earth metal oxide etc.; Due to alkaline earth metal oxide, alkalescence such as sodium hydroxide, hydrated barta etc. is stronger, under its katalysis, the methylolation addition reaction speed of phenol and formaldehyde is fast, in resultant, be rich in methylol, and there is stronger polarity, water-soluble also better, so preferred bases soil metal oxide is as basic catalyst; The polymerization degree of polyvinyl alcohol is preferably 1000 ~ 2000; The mass percent concentration of formalin is preferably 35% ~ 40%; The particle diameter of Micron-Sized Copper Powders Coated is preferred 0.5um ~ 2um; The length of nano level attapulgite is preferably 0.5um ~ 5um, and width is preferably 15nm ~ 30nm; The solid content of water soluble phenol resin solution is 60 ~ 67%, and the dissolving each other than for 1:1 ~ 1:14 of water.
As preferably, described water soluble phenol resin solution adopts the preparation method who comprises the following steps to make:
(1) by the phenol of 100 mass parts, the basic catalyst of the polyvinyl alcohol of 1 ~ 20 mass parts and 4 ~ 10 mass parts joins in reaction vessel, is warming up to 60 ~ 75 ℃, stirring reaction 10 ~ 25 minutes; 37% formaldehyde solution of 110 ~ 120 mass parts is joined in reaction vessel again, be warming up to 80 ~ 100 ℃, stirring reaction 35 ~ 60 minutes, stops heating;
(2) question response temperature is reduced to below 50 ℃, and the nano level attapulgite of 1 ~ 4 mass parts and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle are joined in reaction vessel, stirs 20 ~ 30 minutes;
(3) stop heating, after temperature is reduced to below 50 ℃, the nano level attapulgite of 1 ~ 4 mass parts and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle are joined in reaction vessel, stir 20 ~ 30 minutes;
(4) stop stirring, collect reaction soln, be placed in that ultrasonic wave diverting device is ultrasonic to be uniformly dispersed.
In the preparation method of above-mentioned water soluble phenol resin solution, phenol purity is preferably more than 98.5%; Polyvinyl alcohol is preferably used water-soluble swollen 4 ~ 10 hours of 5 ~ 10 mass parts before use; In step (4), ultrasonic frequency.Be preferably 45Hz～100Hz; During ultrasonic dispersion, temperature is preferably controlled between 30 ℃ ~ 50 ℃, and ultrasonic jitter time is preferably 60 minutes ~ and 120 minutes.
Described frictional property regulator includes but not limited to one or more in barite, chromite powder, graphite, carbon black, zeolite, aluminum oxide, Wingdale.As a kind of preferred, described water soluble phenol resin solution and the formula of frictional property regulator are: according to mass percent meter, water soluble phenol resin 25 ~ 36%, blend fiber 13 ~ 21%, barite 12 ~ 16%, chromite powder 12 ~ 16%, graphite 2 ~ 5%, carbon black 5 ~ 7.5%, zeolite 5 ~ 8%, aluminum oxide 1 ~ 2.5%, Wingdale 3 ~ 10%.
Described fiber is preferably the blend fiber of glass fibre and aramid fiber composition as strongthener.
In described step 2, bake out temperature is preferably 70 ~ 90 ℃, and drying time is preferably 60 ~ 90 minutes;
In described step 3, hot-forming at parison is that in the process of dough sheet, hot pressing temperature is preferably 155 ~ 165 ℃, and pressure is preferably 20 ~ 30MPa, and hot pressing time is preferably 5 ~ 8 minutes; In the process that dough sheet is heat-treated, temperature is preferably controlled at 170 ~ 250 ℃, and heat treatment time is preferably 5 ~ 8 hours.
In sum, the present invention be take water soluble phenol resin solution and is prepared clutch surface as binding agent, first water soluble phenol resin solution, frictional property regulator and water are mixed and made into slurry, to after fiber impregnation slurry, oven dry, be wound around and become parison again, then by parison hot-forming be dough sheet, after heat treatment polish, hole, obtain clutch surface.Wherein, described water soluble phenol resin solution adopts polyvinyl alcohol, nano level attapulgite and the multiple modified water soluble phenol resin of Micron-Sized Copper Powders Coated, has following beneficial effect:
(1) in water soluble phenol resin building-up process, add a part of polyvinyl alcohol, form the phenolic resin aqueous solution of polyvinyl alcohol modification, owing to containing a certain amount of hydroxyl on polyvinyl alcohol molecule chain, improved the solvability of resol in water, and increased the adhesive property of resol as binding agent and fiber, the hydroxyl of this part and the methylol in resol polycondensation in curing process simultaneously forms intrinsic toughening structure and has also effectively improved the toughness of resol; In addition, because the add-on of polyvinyl alcohol is less, less on the thermotolerance impact of resol;
(2) in the phenolic resin aqueous solution of polyvinyl alcohol modification, add nano-attapulgite, because nano-attapulgite can form a large amount of physical crosslinking points with phenolic resin as matrix resin, improved the thermotolerance of resin, also further strengthened its toughness simultaneously; In addition, nano level attapulgite has stronger absorption property, the small-molecule substance that the clutch surface that the water soluble phenol resin aqueous solution of this modification of usining makes as binding agent in use produces can be by the absorption such as zeolite in nano level attapulgite and frictional property regulator, thereby effectively reduced the clutch surface formed gaseous state in surface or liquid film, improved the heat resistanceheat resistant decline performance of resol resin.
(3) Micron-Sized Copper Powders Coated is dispersed in the phenolic resin aqueous solution of polyvinyl alcohol modification, has improved the wear resisting property of resin, further strengthened resin toughness simultaneously.
Above-mentioned water soluble phenol resin solution has effectively improved the solvability of resol in water, and the cohesiveness of resol, toughness, thermotolerance, anti-character of heat-fading and wear resistance.Therefore, clutch surface cost is low, environmental protection as prepared by binding agent to take this water soluble phenol resin solution, the clutch surface flake products making can bear the surging force in processing and use procedure and not ftracture, and has compared with high thermostability, compared with high and stable frictional coefficient and lower wear rate simultaneously.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
Embodiment 1:
In the present embodiment, clutch surface be take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) prepare water soluble phenol resin solution:
By the phenol of 100 mass parts, the NaOH of the polyvinyl alcohol of 5 mass parts and 5 mass parts joins in reaction vessel, then the formaldehyde solution of 115 mass parts is joined in reaction vessel, is warming up to 93 ℃, stirring reaction 40 minutes, obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stop heating, after temperature is reduced to below 50 ℃, the nano level attapulgite of 4 mass parts and 1 mass parts Micron-Sized Copper Powders Coated particle are joined in reaction vessel, stir 25 minutes; Stop stirring, collect reaction soln, be placed in ultrasonic wave diverting device, temperature is controlled at 40 ℃ of left and right, and under 45Hz frequency, ultrasonic wave is disperseed 90 minutes, obtains water soluble phenol resin solution;
The solid content of the above-mentioned water soluble phenol resin solution making is 61.5%, can be dissolved in the water of 7 times of its quality.Thermal weight loss test result shows, at 5%, 438 ℃ of its thermal weight loss 10% of 343 ℃ of its thermal weight losses.
(2) preparation slurry:
According to following formula, prepare slurry: water soluble phenol resin 32 mass parts, barite 13 mass parts, chromite powder 14 mass parts, graphite 4 mass parts, carbon black 5 mass parts, zeolite 6 mass parts, aluminum oxide 2 mass parts, Wingdale 6 mass parts;
(3), by continuous blend fiber dipping sizing agent, then at 85 ℃, dry after 80 minutes and be wound around and become parison;
(4) parison after being wound around being put into hot-die hot-forming is dough sheet, and hot pressing temperature is 160 ℃, and pressure is 20MPa, and hot pressing time is 5 minutes; Dough sheet after hot pressing is inserted to 180 ℃ of baking ovens, thermal treatment 8 hours, the processing of polishing after cooling, boring, obtain clutch surface flake products.
The above-mentioned clutch surface flake products making can bear the surging force in processing and use procedure and not ftracture.
Adopt constant speed formula trier, according to GB/T5764-2011 standard, above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, under the condition of 350 ℃, still have stable frictional coefficient and lower abrasion, quality product meets relevant national standard completely.
Embodiment 2:
In the present embodiment, clutch surface be take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) prepare first water soluble phenol resin solution:
By the phenol of 100 mass parts, the Ba(OH of the polyvinyl alcohol of 4 mass parts and 8 mass parts)
2join in reaction vessel, then the formaldehyde solution of 116 mass parts is joined in reaction vessel, be warming up to 90 ℃, stirring reaction 45 minutes, obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stop heating, after temperature is reduced to below 50 ℃, the nano level attapulgite of 2 mass parts and 1.5 mass parts Micron-Sized Copper Powders Coated particles are joined in reaction vessel, stir 30 minutes; Stop stirring, collect reaction soln, be placed in ultrasonic wave diverting device, temperature is controlled at 45 ℃ of left and right, and under 45Hz frequency, ultrasonic wave is disperseed 100 minutes, obtains Modified Water Soluble Phenolic Resin solution;
The solid content of the above-mentioned water soluble phenol resin solution making is 60.0%, can be dissolved in the water of 9 times of its quality.Thermal weight loss test result shows, at 5%, 423 ℃ of its thermal weight loss 10% of 320 ℃ of its thermal weight losses.
(2) preparation slurry:
According to following formula, prepare slurry: water soluble phenol resin solution 30 mass parts, barite 14 mass parts, chromite powder 15 mass parts, graphite 6 mass parts, carbon black 5.5 mass parts, zeolite 4 mass parts, aluminum oxide 2.5 mass parts, Wingdale 5 mass parts;
(3), by continuous blend fiber dipping sizing agent, then at 90 ℃, dry after 60 minutes and be wound around and become parison;
(4) parison after being wound around being put into hot-die hot-forming is dough sheet, and hot pressing temperature is 165 ℃, and pressure is 20MPa, and the hot pressing time is 6 minutes; Dough sheet after hot pressing is inserted to 200 ℃ of baking ovens, thermal treatment 6 hours, the processing of polishing after cooling, boring, obtain clutch surface flake products.
The above-mentioned clutch surface flake products making can bear the surging force in processing and use procedure and not ftracture.
Adopt constant speed formula trier, according to GB/T5764-2011 standard, above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, under the condition of 350 ℃, still have stable frictional coefficient and lower abrasion, quality product meets relevant national standard completely.
Embodiment 3:
In the present embodiment, clutch surface be take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) prepare water soluble phenol resin solution:
By the phenol of 100 mass parts, the NaOH of the polyvinyl alcohol of 6 mass parts and 6 mass parts joins in reaction vessel, then the formaldehyde solution of 112 mass parts is joined in reaction vessel, is warming up to 95 ℃, stirring reaction 48 minutes, obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stop heating, after temperature is reduced to below 50 ℃, the nano level attapulgite of 3 mass parts and 1.5 mass parts Micron-Sized Copper Powders Coated particles are joined in reaction vessel, stir 25 minutes; Stop stirring, collect reaction soln, be placed in ultrasonic wave diverting device, temperature is controlled at 40 ℃ of left and right, and under 45Hz frequency, ultrasonic wave is disperseed 120 minutes, obtains Modified Water Soluble Phenolic Resin;
The solid content of the above-mentioned water soluble phenol resin solution making is 63%, can be dissolved in the water of 7 times of its quality.Thermal weight loss test result shows, at 5%, 445 ℃ of its thermal weight loss 10% of 348 ℃ of its thermal weight losses.
(2) preparation slurry:
According to following formula, prepare slurry: Modified Water Soluble Phenolic Resin solution 33 mass parts, barite 12 mass parts, chromite powder 16 mass parts, graphite 6 mass parts, carbon black 5 mass parts, zeolite 5 mass parts, aluminum oxide 2 mass parts, Wingdale 3 mass parts;
(3), by continuous blend fiber dipping sizing agent, then at 85 ℃, dry after 90 minutes and be wound around and become parison;
(4) parison after being wound around being put into hot-die hot-forming is dough sheet, and hot pressing temperature is 160 ℃, and pressure is 25MPa, 6 minutes hot pressing time; Dough sheet after hot pressing is inserted to 220 ℃ of baking ovens, thermal treatment 5 hours, the processing of polishing after cooling, boring, obtain clutch surface flake products.
The above-mentioned clutch surface flake products making can bear the surging force in processing and use procedure and not ftracture.
Adopt constant speed formula trier, according to GB/T5764-2011 standard, above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, under the condition of 350 ℃, still have stable frictional coefficient and lower abrasion, quality product meets relevant national standard completely.
Table 1: adopt constant speed formula trier, clutch surface above-described embodiment 1-3 being prepared according to GB/T5764-2011 standard is tested the friction and wear behavior table obtaining
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that and the foregoing is only specific embodiments of the invention; be not limited to the present invention; all any modifications of making within the scope of principle of the present invention, supplement or similar fashion substitutes etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the water soluble phenol resin solution of take is prepared the method for clutch surface as binding agent, comprises the steps:
Step 1, water soluble phenol resin solution and frictional property regulator are mixed, add suitable quantity of water, stir and make slurry;
Described water soluble phenol resin solution is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to mass fraction meter, the phenolic resin aqueous solution of described polyvinyl alcohol modification is by the formalin of the phenol of 100 mass parts, 110～120 mass parts, the polyvinyl alcohol of 1～20 mass parts, and the basic catalyst hybrid reaction of 4～10 mass parts forms, wherein the mass percent concentration of formalin is 30%～45%; According to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, be 100 mass fraction meters, described nano level attapulgite content is 1～4 mass parts, and Micron-Sized Copper Powders Coated content is 1～2 mass parts;
Step 2, by fiber impregnation slurry, after drying, be wound around and become parison;
Step 3, by parison hot-forming be dough sheet, more after heat treatment polish, hole, obtain clutch surface.
2. according to claim 1ly take water soluble phenol resin solution and prepare the method for clutch surface as binding agent, it is characterized in that: in described water soluble phenol resin solution, basic catalyst comprises one or several in ammoniacal liquor, sodium carbonate, amine, alkaline earth metal oxide.
3. according to claim 1ly take water soluble phenol resin solution and prepare the method for clutch surface as binding agent, it is characterized in that: in described water soluble phenol resin solution, basic catalyst comprises sodium hydroxide or hydrated barta.
4. according to claim 1ly take water soluble phenol resin solution and prepare the method for clutch surface as binding agent, it is characterized in that: in described water soluble phenol resin solution, the polymerization degree of polyvinyl alcohol is 1000～2000.
5. according to claim 1ly take water soluble phenol resin solution and prepare the method for clutch surface as binding agent, it is characterized in that: the solid content of described water soluble phenol resin solution is 60%～67%.
6. according to the water soluble phenol resin solution of take described in arbitrary claim in claim 1 to 5, as binding agent, prepare the method for clutch surface, it is characterized in that: the preparation method of described water soluble phenol resin solution comprises the following steps:
(1) by the phenol of 100 mass parts, the basic catalyst of the polyvinyl alcohol of 1～20 mass parts and 4～10 mass parts joins in reaction vessel, is warming up to 60～75 ℃, stirring reaction 10～25 minutes; 37% formaldehyde solution of 110～120 mass parts is joined in reaction vessel again, be warming up to 80～100 ℃, stirring reaction 35～60 minutes, stops heating;
(2) question response temperature is reduced to below 50 ℃, and the nano level attapulgite of 1～4 mass parts and 1～2 mass parts Micron-Sized Copper Powders Coated particle are joined in reaction vessel, stirs 20～30 minutes;
(3) stop stirring, collect reaction soln, be placed in that ultrasonic wave diverting device is ultrasonic to be uniformly dispersed.
7. according to the water soluble phenol resin solution of take described in arbitrary claim in claim 1 to 5, as binding agent, prepare the method for clutch surface, it is characterized in that: described frictional property regulator comprises one or more in barite, chromite powder, graphite, carbon black, zeolite, aluminum oxide, Wingdale.
8. according to the water soluble phenol resin solution of take described in arbitrary claim in claim 1 to 5, prepare the method for clutch surface as binding agent, it is characterized in that: described water soluble phenol resin solution and the formula of frictional property regulator are: according to mass percent meter, water soluble phenol resin 25～36%, blend fiber 13～21%, barite 12～16%, chromite powder 12～16%, graphite 2～5%, carbon black 5～7.5%, zeolite 5～8%, aluminum oxide 1～2.5%, Wingdale 3～10%.
9. according to the water soluble phenol resin solution of take described in arbitrary claim in claim 1 to 5, as binding agent, prepare the method for clutch surface, it is characterized in that: in described step 2, bake out temperature is 70～90 ℃, and drying time is 60～90 minutes.
10. according to the water soluble phenol resin solution of take described in arbitrary claim in claim 1 to 5, prepare the method for clutch surface as binding agent, it is characterized in that: in described step 3, hot-forming at parison is in the process of dough sheet, hot pressing temperature is 155～165 ℃, pressure is 20～30MPa, and hot pressing time is 5～8 minutes; In the process that dough sheet is heat-treated, temperature is controlled at 170～250 ℃, and heat treatment time is 5～8 hours.
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| CN113380527B (en) * | 2021-06-12 | 2023-07-18 | 山西汇镪磁性材料制作有限公司 | Preparation method of toughening release agent and application of toughening release agent in preparation of sintered NdFeB |
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Address after: No. 155 Xinhua North Road, Xiping Street, Songyang County, Lishui City, Zhejiang Province, 323400 Patentee after: ZHEJIANG KEMA FRICTION MATERIALS Co.,Ltd. Country or region after: China Address before: 323400 No.312, Ruiyang Avenue, Xiping Town, Songyang County, Lishui City, Zhejiang Province Patentee before: ZHEJIANG KEMA FRICTION MATERIALS Co.,Ltd. Country or region before: China |