CN102993635A - 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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- CN102993635A CN102993635A CN2012105127438A CN201210512743A CN102993635A CN 102993635 A CN102993635 A CN 102993635A CN 2012105127438 A CN2012105127438 A CN 2012105127438A CN 201210512743 A CN201210512743 A CN 201210512743A CN 102993635 A CN102993635 A CN 102993635A
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- water soluble
- soluble phenol
- phenol resin
- mass parts
- resin solution
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 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
- 229960000892 attapulgite Drugs 0.000 claims abstract description 18
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000005011 phenolic resin Substances 0.000 claims description 78
- 239000000243 solution Substances 0.000 claims description 46
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 239000011230 binding agent Substances 0.000 claims description 26
- 239000000843 powder Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- 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 17
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 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
- 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 12
- 229910021536 Zeolite Inorganic materials 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
- 239000002245 particle Substances 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
- 239000003054 catalyst 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
- 238000010792 warming Methods 0.000 claims description 7
- 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
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 229910052728 basic metal Inorganic materials 0.000 claims description 2
- 150000003818 basic metals Chemical class 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 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
- 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
- 239000003960 organic solvent Substances 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 238000012360 testing method Methods 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
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005498 polishing 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
- 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
- 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
- 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
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 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 of method for preparing the high-performance motor vehicle clutch surface take water soluble phenol resin solution as binding agent.
Background technology
The friction materials that clutch surface is used as motor vehicle transmission, mainly take resol, rubber etc. as binding agent, take fortifying fibre etc. as framework material, various functional fillers are the formations such as packing material as increasing the filler that rubs, wear resistant filler etc.The production technique of traditional clutch coupling is take wet processing as main, and flow process is as follows: (1) with the binding agents such as resol, rubber organic solvent dissolution, the adding filler mixes makes slurry; (2) with the macrofiber dipping sizing agent, Wrapping formed after the oven dry; (3) by hot-forming, process through thermal treatment, cross grinding, punching or Drilling operation again and obtain the clutch surface flake products.
Development along with modern industry, clutch surface to motor vehicles has proposed higher performance requriements, as require clutch surface when use temperature reaches 350 degrees centigrade frictional coefficient 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.Simultaneously, 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 use a large amount of organic solvents also to increase the cost of making clutch surface.
Use water soluble phenol resin to produce the use that clutch surface can be avoided organic solvent as binding agent, 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 about 250 ℃, thermotolerance is lower, therefore large in this high-temperature Region Decomposition amount, the material that decomposes forms one deck gaseous state or liquid film at friction surface, cause the frictional coefficient of clutch surface to reduce, the safe operation to vehicle when serious consists of larger threat.In addition, because the fragility of water soluble phenol resin is larger, after the oven dry of fiber impregnation slurry, slurry comes off from fiber surface easily, and the clutch surface flake products that causes preparing ftractures in processing or use procedure easily, affects the normal use of product.
For this reason, people endeavour research always and how water soluble phenol resin are carried out modification, the clutch surface that water soluble phenol resin after the modification is prepared as sizing agent can bear the surging force in processing and the use procedure and not ftracture, and the while can keep higher and stable frictional coefficient and less abradability when high temperature.
Publication number is that to adopt water soluble phenol resin in the patent application of CN101655128A be binding agent, add paracril as toughner in order to improve its fragility problem, but Powdered acrylonitrile-butadiene rubber is expensive, cause cost to increase, need in addition to use a certain amount of organic reagent dissolving nitrile rubber to 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 preparation 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 has also increased cost.
Summary of the invention
Technical problem to be solved by this invention is the problem that exists in the above-mentioned clutch surface preparation, a kind of method for preparing clutch surface take water soluble phenol resin solution as binding agent is provided, 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 present invention realizes that the technical scheme that above-mentioned technical purpose provides is: a kind of method for preparing clutch surface take water soluble phenol resin solution 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 the 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, and wherein the mass percent concentration of formalin is 30% ~ 45%; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, described nano level attapulgite content is 1 ~ 4 mass parts, and Micron-Sized Copper Powders Coated content is 1 ~ 2 mass parts;
Step 2, with the fiber impregnation slurry, twining after the oven dry becomes parison;
Step 3, with parison hot-forming be dough sheet, after heat treatment polish again, hole, obtain clutch surface.
In the described water soluble phenol resin solution, basic catalyst includes but not limited to one or several in ammoniacal liquor, hexamethylenetetramine, yellow soda ash, amine, basic metal, the alkaline earth metal oxide etc.; Because alkaline earth metal oxide, alkalescence such as sodium hydroxide, hydrated barta etc. is stronger, the methylolation addition reaction speed of phenol and formaldehyde is fast under its katalysis, be rich in methylol in the resultant, and has stronger polarity, water-soluble also better, so the 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 may further comprise the steps to make:
(1) with 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 the reaction vessel, is warming up to 60 ~ 75 ℃, stirring reaction 10 ~ 25 minutes; 37% formaldehyde solution with 110 ~ 120 mass parts joins in the reaction vessel again, is warming up to 80 ~ 100 ℃, stirring reaction 35 ~ 60 minutes, stopped heating;
(2) the question response temperature is reduced to below 50 ℃, and nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts joined in the reaction vessel, stirs 20 ~ 30 minutes;
(3) stopped heating after temperature is reduced to below 50 ℃, joins nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts in the reaction vessel, stirs 20 ~ 30 minutes;
(4) stop to stir, collect reaction soln, place ultrasonic wave diverting device ultra-sonic dispersion even.
Among 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 the step (4), ultrasonic frequency.Be preferably 45Hz～100Hz; Temperature preferably is controlled between 30 ℃ ~ 50 ℃ during ultra-sonic dispersion, and the ultra-sonic dispersion 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, the Wingdale.As a kind of preferred, the prescription of described water soluble phenol resin solution and frictional property regulator is: according to the 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 the described step 2, bake out temperature is preferably 70 ~ 90 ℃, and drying time is preferably 60 ~ 90 minutes;
In the described step 3, hot-forming at parison is that hot pressing temperature is preferably 155 ~ 165 ℃ in the process of dough sheet, 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 preferably is controlled at 170 ~ 250 ℃, and heat treatment time is preferably 5 ~ 8 hours.
In sum, the present invention prepares clutch surface take water soluble phenol resin solution as binding agent, at first water soluble phenol resin solution, frictional property regulator and water are mixed and made into slurry, become parison with twining after fiber impregnation slurry, the oven dry again, then with 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 the water soluble phenol resin building-up process, adds a part of polyvinyl alcohol, form the phenolic resin aqueous solution of polyvinyl alcohol modification, owing to contain a certain amount of hydroxyl on the polyvinyl alcohol molecule chain, improved the solvability of resol in water, and increased the adhesive property of resol as binding agent and fiber, the simultaneously hydroxyl of this part and the methylol in resol polycondensation in the process of solidifying forms the toughness that the intrinsic toughening structure has also improved resol effectively; 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, the nano level attapulgite has stronger absorption property, the small-molecule substance that the clutch surface that makes as binding agent with the water soluble phenol resin aqueous solution of this modification in use produces can be by the absorption such as zeolite in nano level attapulgite and the 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 Effective Raise the solvability of resol in water, and the cohesiveness of resol, toughness, thermotolerance, anti-character of heat-fading and wear resistance.Therefore, prepare low, the environmental protection of clutch surface cost take this water soluble phenol resin solution as binding agent, the clutch surface flake products that makes can bear the surging force in processing and the use procedure and not ftracture, and has simultaneously higher thermostability, higher and stable frictional coefficient and lower wear rate.
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 any restriction effect.
Embodiment 1:
In the present embodiment, clutch surface is take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) preparation water soluble phenol resin solution:
Phenol with 100 mass parts, the NaOH of the polyvinyl alcohol of 5 mass parts and 5 mass parts joins in the reaction vessel, and the formaldehyde solution with 115 mass parts joins in the reaction vessel again, is warming up to 93 ℃, stirring reaction 40 minutes obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stopped heating after temperature is reduced to below 50 ℃, joins nano level attapulgite and the 1 mass parts Micron-Sized Copper Powders Coated particle of 4 mass parts in the reaction vessel, stirs 25 minutes; Stop to stir, collect reaction soln, place the ultrasonic wave diverting device, temperature is controlled at about 40 ℃, and ultrasonic wave was disperseed 90 minutes under the 45Hz frequency, got water soluble phenol resin solution;
The solid content of the above-mentioned water soluble phenol resin solution that makes is 61.5%, can be dissolved in the water of 7 times of its quality.The 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:
Prepare slurry according to following prescription: 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) with continuous blend fiber dipping sizing agent, then twining after 80 minutes 85 ℃ of lower bakings becomes parison;
(4) parison after will twining puts into that hot-die is hot-forming to be dough sheet, and hot pressing temperature is 160 ℃, and pressure is 20MPa, and hot pressing time is 5 minutes; Dough sheet after the hot pressing is inserted 180 ℃ of baking ovens, thermal treatment 8 hours, the processing of polishing after the cooling, boring obtain the clutch surface flake products.
The above-mentioned clutch surface flake products that makes can bear the surging force in processing and the use procedure and not ftracture.
Adopt constant speed formula trier, according to the 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, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Embodiment 2:
In the present embodiment, clutch surface is take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) the first water soluble phenol resin solution of preparation:
With the phenol of 100 mass parts, the Ba(OH of the polyvinyl alcohol of 4 mass parts and 8 mass parts)
2Join in the reaction vessel, the formaldehyde solution with 116 mass parts joins in the reaction vessel again, is warming up to 90 ℃, and stirring reaction 45 minutes obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stopped heating after temperature is reduced to below 50 ℃, joins nano level attapulgite and the 1.5 mass parts Micron-Sized Copper Powders Coated particles of 2 mass parts in the reaction vessel, stirs 30 minutes; Stop to stir, collect reaction soln, place the ultrasonic wave diverting device, temperature is controlled at about 45 ℃, and ultrasonic wave was disperseed 100 minutes under the 45Hz frequency, got Modified Water Soluble Phenolic Resin solution;
The solid content of the above-mentioned water soluble phenol resin solution that makes is 60.0%, can be dissolved in the water of 9 times of its quality.The 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:
Prepare slurry according to following prescription: 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) with continuous blend fiber dipping sizing agent, then twining after 60 minutes 90 ℃ of lower bakings becomes parison;
(4) parison after will twining puts into that hot-die is hot-forming to be dough sheet, and hot pressing temperature is 165 ℃, and pressure is 20MPa, and the hot pressing time is 6 minutes; Dough sheet after the hot pressing is inserted 200 ℃ of baking ovens, thermal treatment 6 hours, the processing of polishing after the cooling, boring obtain the clutch surface flake products.
The above-mentioned clutch surface flake products that makes can bear the surging force in processing and the use procedure and not ftracture.
Adopt constant speed formula trier, according to the 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, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Embodiment 3:
In the present embodiment, clutch surface is take water soluble phenol resin solution as binding agent, and its preparation method comprises the steps:
(1) preparation water soluble phenol resin solution:
Phenol with 100 mass parts, the NaOH of the polyvinyl alcohol of 6 mass parts and 6 mass parts joins in the reaction vessel, and the formaldehyde solution with 112 mass parts joins in the reaction vessel again, is warming up to 95 ℃, stirring reaction 48 minutes obtains the phenolic resin aqueous solution of polyvinyl alcohol modification; Stopped heating after temperature is reduced to below 50 ℃, joins nano level attapulgite and the 1.5 mass parts Micron-Sized Copper Powders Coated particles of 3 mass parts in the reaction vessel, stirs 25 minutes; Stop to stir, collect reaction soln, place the ultrasonic wave diverting device, temperature is controlled at about 40 ℃, and ultrasonic wave was disperseed 120 minutes under the 45Hz frequency, got Modified Water Soluble Phenolic Resin;
The solid content of the above-mentioned water soluble phenol resin solution that makes is 63%, can be dissolved in the water of 7 times of its quality.The 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:
Prepare slurry according to following prescription: 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) with continuous blend fiber dipping sizing agent, then twining after 90 minutes 85 ℃ of lower bakings becomes parison;
(4) parison after will twining puts into that hot-die is hot-forming to be dough sheet, and hot pressing temperature is 160 ℃, and pressure is 25MPa, 6 minutes hot pressing time; Dough sheet after the hot pressing is inserted 220 ℃ of baking ovens, thermal treatment 5 hours, the processing of polishing after the cooling, boring obtain the clutch surface flake products.
The above-mentioned clutch surface flake products that makes can bear the surging force in processing and the use procedure and not ftracture.
Adopt constant speed formula trier, according to the 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, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Table 1: adopt constant speed formula trier, test the friction and wear behavior table that obtains according to the clutch surface that the GB/T5764-2011 standard prepares above-described embodiment 1-3
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that the above only is specific embodiments of the invention; be not limited to the present invention; all any modifications of in principle scope of the present invention, making, replenish or similar fashion substitutes etc., all should be included within protection scope of the present invention.
Claims (10)
1. prepare the method for clutch surface take water soluble phenol resin solution 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 the 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, and wherein the mass percent concentration of formalin is 30% ~ 45%; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, described nano level attapulgite content is 1 ~ 4 mass parts, and Micron-Sized Copper Powders Coated content is 1 ~ 2 mass parts;
Step 2, with the fiber impregnation slurry, twining after the oven dry becomes parison;
Step 3, with parison hot-forming be dough sheet, after heat treatment polish again, hole, obtain clutch surface.
2. the method for preparing clutch surface take water soluble phenol resin solution as binding agent according to claim 1, it is characterized in that: in the described water soluble phenol resin solution, basic catalyst comprises one or several in ammoniacal liquor, hexamethylenetetramine, yellow soda ash, amine, basic metal, the alkaline earth metal oxide.
3. the method for preparing clutch surface take water soluble phenol resin solution as binding agent according to claim 2, it is characterized in that: described alkaline earth metal oxide comprises sodium hydroxide or hydrated barta.
4. the method for preparing clutch surface take water soluble phenol resin solution as binding agent according to claim 1, it is characterized in that: in the described water soluble phenol resin solution, the polymerization degree of polyvinyl alcohol is 1000 ~ 2000.
5. the method for preparing clutch surface take water soluble phenol resin solution as binding agent according to claim 1, it is characterized in that: the solid content of described water soluble phenol resin solution is 60% ~ 67%.
6. the described method for preparing clutch surface take water soluble phenol resin solution as binding agent of arbitrary claim in 5 according to claim 1, it is characterized in that: the preparation method of described water soluble phenol resin solution may further comprise the steps:
(1) with 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 the reaction vessel, is warming up to 60 ~ 75 ℃, stirring reaction 10 ~ 25 minutes; 37% formaldehyde solution with 110 ~ 120 mass parts joins in the reaction vessel again, is warming up to 80 ~ 100 ℃, stirring reaction 35 ~ 60 minutes, stopped heating;
(2) the question response temperature is reduced to below 50 ℃, and nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts joined in the reaction vessel, stirs 20 ~ 30 minutes;
(3) stopped heating after temperature is reduced to below 50 ℃, joins nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts in the reaction vessel, stirs 20 ~ 30 minutes;
(4) stop to stir, collect reaction soln, place ultrasonic wave diverting device ultra-sonic dispersion even.
7. the described method for preparing clutch surface take water soluble phenol resin solution as binding agent of arbitrary claim in 5 according to claim 1, it is characterized in that: described frictional property regulator comprises one or more in barite, chromite powder, graphite, carbon black, zeolite, aluminum oxide, the Wingdale.
8. the described method for preparing clutch surface take water soluble phenol resin solution as binding agent of arbitrary claim in 5 according to claim 1, it is characterized in that: the prescription of described water soluble phenol resin solution and frictional property regulator is: according to the 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. the described method for preparing clutch surface take water soluble phenol resin solution as binding agent of arbitrary claim in 5 according to claim 1, it is characterized in that: in the described step 2, bake out temperature is 70 ~ 90 ℃, and drying time is 60 ~ 90 minutes.
10. the described method for preparing clutch surface take water soluble phenol resin solution as binding agent of arbitrary claim in 5 according to claim 1, it is characterized in that: in the 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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| CN106047178A (en) * | 2016-07-18 | 2016-10-26 | 张和庆 | Infusing paint containing nano molybdenum disilicide and used for clutch facing material |
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| CN106047178A (en) * | 2016-07-18 | 2016-10-26 | 张和庆 | Infusing paint containing nano molybdenum disilicide and used for clutch facing material |
| CN106047036A (en) * | 2016-07-18 | 2016-10-26 | 张和庆 | Infusion coating for high-temperature-resistant sparkless vehicle clutch facing material |
| CN106085042A (en) * | 2016-07-18 | 2016-11-09 | 张和庆 | A kind of environment-friendly type clutch surface sheet stock is with soaking coating processed |
| CN106085240A (en) * | 2016-07-18 | 2016-11-09 | 张和庆 | The car clutch face sheet material that a kind of basalt fibre strengthens soaks coating processed |
| CN106147498A (en) * | 2016-07-18 | 2016-11-23 | 张和庆 | A kind of wear-resistant clutch surface sheet stock soaks coating processed |
| CN106147125A (en) * | 2016-08-23 | 2016-11-23 | 潘光贤 | A kind of high-strength high temperature resistant clutch surface and preparation method thereof |
| CN106397884A (en) * | 2016-08-29 | 2017-02-15 | 浙江科马摩擦材料股份有限公司 | Modified rubber and preparation method thereof, and application of modified rubber to clutch facing |
| CN107057275A (en) * | 2017-04-21 | 2017-08-18 | 来安县隆华摩擦材料有限公司 | A kind of preparation method of car clutch face sheet nano barium titanate aluminium/composite modified water soluble phenol resin of phosphorus boron molybdenum silicon |
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| CN112460163A (en) * | 2020-12-15 | 2021-03-09 | 东台市华阳玻纤有限责任公司 | Manufacturing process of asbestos-free clutch facing |
| CN113276382A (en) * | 2021-04-16 | 2021-08-20 | 浙江科马摩擦材料股份有限公司 | Method for preparing clutch facing by adopting solid water-soluble thermosetting phenolic resin |
| CN113380527A (en) * | 2021-06-12 | 2021-09-10 | 山西汇镪磁性材料制作有限公司 | Preparation method of toughening mold release agent and application of toughening mold release agent in preparation of sintered neodymium iron boron |
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