CN106195051B - Clutch facing containing nano filler and preparation method thereof - Google Patents
Clutch facing containing nano filler and preparation method thereof Download PDFInfo
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- CN106195051B CN106195051B CN201610761906.4A CN201610761906A CN106195051B CN 106195051 B CN106195051 B CN 106195051B CN 201610761906 A CN201610761906 A CN 201610761906A CN 106195051 B CN106195051 B CN 106195051B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000000945 filler Substances 0.000 title claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims abstract description 57
- 239000005060 rubber Substances 0.000 claims abstract description 57
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 53
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000002002 slurry Substances 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 33
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 26
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 26
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims abstract description 26
- 239000005011 phenolic resin Substances 0.000 claims abstract description 26
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 13
- 239000010439 graphite Substances 0.000 claims abstract description 13
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 13
- 239000004312 hexamethylene tetramine Substances 0.000 claims abstract description 13
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims abstract description 13
- 235000019359 magnesium stearate Nutrition 0.000 claims abstract description 13
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims abstract description 13
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006235 reinforcing carbon black Substances 0.000 claims abstract description 13
- 239000007965 rubber solvent Substances 0.000 claims abstract description 13
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 13
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims abstract description 12
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- IIGMITQLXAGZTL-UHFFFAOYSA-N octyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCC IIGMITQLXAGZTL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 37
- 239000004744 fabric Substances 0.000 claims description 37
- 239000000463 material Substances 0.000 claims description 30
- 238000007598 dipping method Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 19
- 238000004537 pulping Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 14
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 12
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 12
- 238000007731 hot pressing Methods 0.000 claims description 12
- 238000010074 rubber mixing Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 12
- 229940068918 polyethylene glycol 400 Drugs 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 7
- 238000001694 spray drying Methods 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- FIBARIGPBPUBHC-UHFFFAOYSA-N octyl 8-(3-octyloxiran-2-yl)octanoate Chemical compound CCCCCCCCOC(=O)CCCCCCCC1OC1CCCCCCCC FIBARIGPBPUBHC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000002783 friction material Substances 0.000 description 8
- 238000010298 pulverizing process Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/60—Clutching elements
- F16D13/64—Clutch-plates; Clutch-lamellae
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a clutch facing containing nano-filler and a preparation method thereof. The impregnating resin is prepared from the following raw materials in parts by weight: 20-30 parts of phenolic resin; 6-8 parts of urea-formaldehyde resin; 3-4 parts of hexamethylenetetramine; 75-85 parts of alcohol; the impregnated rubber slurry is prepared from the following raw materials in parts by weight: 23-37 parts of styrene butadiene rubber; 10-14 parts of phenolic resin; 5-7 parts of sulfur powder; 0.4-0.6 part of accelerator CZ; 0.8-1.2 parts of an antioxidant 1076; 1.2-1.6 parts of magnesium stearate; 0.6-0.8 part of epoxy octyl stearate; 8-10 parts of semi-reinforcing carbon black; 8-12 parts of graphite; 7-9 parts of aluminum oxide; 6-8 parts of polyethylene glycol; 12-14 parts of modified nano montmorillonite; 85-115 parts of rubber solvent oil. The clutch facing has the advantages of high friction coefficient, low abrasion and excellent performance.
Description
Technical Field
The invention belongs to the field of friction materials, and particularly relates to a clutch facing containing a nano filler and a preparation method thereof.
Background
The friction material for the automobile is mainly used for manufacturing a brake friction plate and a clutch facing. The clutch facing is a composite material which takes friction as a main function and has structural performance requirements. The friction materials originally adopt asbestos-based friction materials, and with the increasing requirements on environmental protection and safety, semimetal type friction materials, composite fiber friction materials and ceramic fiber friction materials gradually appear. Since friction materials are used in automobiles, mainly for the production of parts of braking systems and drive trains, sufficiently high and stable coefficients of friction and good wear resistance are required.
Disclosure of Invention
A first object of the present invention is to provide a clutch facing containing a nanofiller;
a second object of the present invention is to provide a method for producing the clutch facing described above.
The above object of the present invention is achieved by the following technical solutions:
a clutch facing containing nano-filler is prepared by impregnating composite cloth with resin and rubber slurry, winding blank, hot pressing, heat treating and grinding, wherein:
the impregnating resin is prepared from the following raw materials in parts by weight: 20-30 parts of phenolic resin; 6-8 parts of urea-formaldehyde resin; 3-4 parts of hexamethylenetetramine; 75-85 parts of alcohol;
the impregnated rubber slurry is prepared from the following raw materials in parts by weight: 23-37 parts of styrene butadiene rubber; 10-14 parts of phenolic resin; 5-7 parts of sulfur powder; 0.4-0.6 part of accelerator CZ; 0.8-1.2 parts of an antioxidant 1076; 1.2-1.6 parts of magnesium stearate; 0.6-0.8 part of epoxy octyl stearate; 8-10 parts of semi-reinforcing carbon black; 8-12 parts of graphite; 7-9 parts of aluminum oxide; 6-8 parts of polyethylene glycol; 12-14 parts of modified nano montmorillonite; 85-115 parts of rubber solvent oil;
the preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 650-750 ℃ for 1-2 hours, taking out, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and performing spray drying to obtain the montmorillonite-vinyl trimethoxy silane montmorillonite-vinyl montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: (15-25): (10-20): (45-55).
Further, the preparation method of the impregnating resin comprises the following steps: mixing phenolic resin, urea-formaldehyde resin and hexamethylenetetramine uniformly, pulverizing, adding alcohol, mixing, and stirring in a stirrer to obtain the impregnating resin solution.
Further, the preparation method of the impregnated rubber slurry comprises the following steps:
step S1, starting an open type rubber mixing mill, trial-running for 1-2 minutes, adjusting the roller spacing to 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 2-3 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, mixing uniformly at 80-85 ℃, and then wrapping in a triangular bag for 2-3 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and modified nano montmorillonite, after the materials are uniformly mixed, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 3-4 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, pulping for 4-5 hours, and obtaining the impregnated rubber slurry when no particles exist in the rubber slurry.
Further, the preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 700 ℃ for 1.5 hours, taking out the montmorillonite, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and performing spray drying to obtain the montmorillonite-vinyl trimethoxy silane-based montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: 20: 15: 50.
the preparation method of the clutch facing comprises the following steps:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in dipping resin to control the resin content to 18-22%;
step S3, dipping the composite fabric into the dipped rubber slurry, wherein the weight ratio of the dipped rubber slurry to the dipped rubber slurry is 1: 0.8-1.2;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
The invention has the advantages that:
the clutch facing provided by the invention contains the nano filler, and has the advantages of high friction coefficient, low abrasion and excellent performance. The clutch facing is simple in preparation method, does not need harsh technological conditions, and is suitable for industrial mass production.
Detailed Description
The following examples are given to further illustrate the essence of the present invention, but should not be construed as limiting the scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Example 1: preparation of Clutch facing
The composite fabric is prepared by impregnating resin and rubber slurry into composite fabric, winding the fabric, hot pressing, heat treating and grinding:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in the dipping resin to control the resin content to be 20%;
step S3, dipping the fabric in the dipping rubber slurry, wherein the weight ratio of the dipping rubber slurry to the composite fabric is 1: 1;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
The impregnating resin is prepared from the following raw materials in parts by weight: 25 parts of phenolic resin; 7 parts of urea-formaldehyde resin; 3.5 parts of hexamethylenetetramine; 80 parts of alcohol. The preparation method comprises mixing phenolic resin, urea-formaldehyde resin and hexamethylenetetramine, pulverizing, adding into a stirrer, adding alcohol, and stirring to obtain uniform impregnating resin solution.
The composite cloth is made of glass fiber, chemical fiber, carbon fiber and copper wire as raw materials by conventional techniques well known to those skilled in the art.
The impregnated rubber slurry is prepared from the following raw materials in parts by weight: 30 parts of styrene butadiene rubber; 12 parts of phenolic resin; 6 parts of sulfur powder; 0.5 part of accelerator CZ; 1 part of antioxidant 1076; magnesium stearate, 1.4 parts; 0.7 part of epoxy octyl stearate; 9 parts of semi-reinforcing carbon black; 10 parts of graphite; 8 parts of aluminum oxide; polyethylene glycol 400, 7 parts; 13 parts of modified nano montmorillonite; 100 parts of rubber solvent oil.
The preparation steps of the impregnated rubber slurry are as follows:
step S1, starting an open type rubber mixing mill, trial-running for 2 minutes, adjusting the roller spacing to be 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 3 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, uniformly mixing at 82 ℃, and then wrapping in a triangular bag for 3 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and modified nano montmorillonite, after the materials are uniformly mixed, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 4 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, pulping for 4.5 hours, and obtaining the impregnated rubber slurry when no particles exist in the rubber slurry.
The preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 700 ℃ for 1.5 hours, taking out the montmorillonite, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and performing spray drying to obtain the montmorillonite-vinyl trimethoxy silane-based montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: 20: 15: 50.
example 2: preparation of Clutch facing
The composite fabric is prepared by impregnating resin and rubber slurry into composite fabric, winding the fabric, hot pressing, heat treating and grinding:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in the dipping resin to control the resin content to 18%;
step S3, dipping the fabric in the dipping rubber slurry, wherein the weight ratio of the dipping rubber slurry to the compound fabric is 1: 0.8;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
The impregnating resin is prepared from the following raw materials in parts by weight: 20 parts of phenolic resin; 6 parts of urea-formaldehyde resin; 3 parts of hexamethylenetetramine; 75 parts of alcohol. The preparation method comprises mixing phenolic resin, urea-formaldehyde resin and hexamethylenetetramine, pulverizing, adding into a stirrer, adding alcohol, and stirring to obtain uniform impregnating resin solution.
The impregnated rubber slurry is prepared from the following raw materials in parts by weight: 23 parts of styrene butadiene rubber; 10 parts of phenolic resin; 5 parts of sulfur powder; 0.4 part of accelerator CZ; 0.8 part of antioxidant 1076; magnesium stearate, 1.2 parts; 0.6 part of epoxy octyl stearate; 8 parts of semi-reinforcing carbon black; 8 parts of graphite; 7 parts of aluminum oxide; 400 parts of polyethylene glycol; 12 parts of modified nano montmorillonite; 85 parts of rubber solvent oil.
The preparation steps of the impregnated rubber slurry are as follows:
step S1, starting an open type rubber mixing mill, trial-running for 1 minute, adjusting the roller spacing to be 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 2 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, mixing uniformly at 80 ℃, and then wrapping in a triangular bag for 2 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and modified nano montmorillonite, after the materials are uniformly mixed, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 3 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, and pulping for 4 hours to obtain the impregnated rubber slurry when no particles exist in the rubber slurry.
The preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 650 ℃ for 2 hours, taking out the montmorillonite, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and spray-drying to obtain the montmorillonite-vinyl trimethoxy silane-based montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: 15: 10: 45.
example 3: preparation of Clutch facing
The composite fabric is prepared by impregnating resin and rubber slurry into composite fabric, winding the fabric, hot pressing, heat treating and grinding:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in the dipping resin to control the resin content to 22%;
step S3, dipping the fabric in the dipping rubber slurry, wherein the weight ratio of the dipping rubber slurry to the composite fabric is 1: 1.2;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
The impregnating resin is prepared from the following raw materials in parts by weight: 30 parts of phenolic resin; 8 parts of urea-formaldehyde resin; 4 parts of hexamethylenetetramine; 85 parts of alcohol. The preparation method comprises mixing phenolic resin, urea-formaldehyde resin and hexamethylenetetramine, pulverizing, adding into a stirrer, adding alcohol, and stirring to obtain uniform impregnating resin solution.
The impregnated rubber slurry is prepared from the following raw materials in parts by weight: 37 parts of styrene butadiene rubber; 14 parts of phenolic resin; 7 parts of sulfur powder; 0.6 part of accelerator CZ; 1.2 parts of an antioxidant 1076; magnesium stearate, 1.6 parts; 0.8 part of epoxy octyl stearate; 10 parts of semi-reinforcing carbon black; 12 parts of graphite; 9 parts of aluminum oxide; polyethylene glycol 400, 8 parts; 14 parts of modified nano montmorillonite; 115 parts of rubber solvent oil.
The preparation steps of the impregnated rubber slurry are as follows:
step S1, starting an open type rubber mixing mill, trial-running for 2 minutes, adjusting the roller spacing to be 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 3 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, mixing uniformly at 85 ℃, and then wrapping in a triangular bag for 3 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and modified nano montmorillonite, after the materials are uniformly mixed, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 4 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, and pulping for 5 hours to obtain the impregnated rubber slurry when no particles exist in the rubber slurry.
The preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 750 ℃ for 2 hours, taking out the montmorillonite, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and spray-drying to obtain the montmorillonite-vinyl trimethoxy silane-based montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: 25: 20: 55.
example 4: comparative example, nanomontmorillonite was not modified
The composite fabric is prepared by impregnating resin and rubber slurry into composite fabric, winding the fabric, hot pressing, heat treating and grinding:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in the dipping resin to control the resin content to be 20%;
step S3, dipping the fabric in the dipping rubber slurry, wherein the weight ratio of the dipping rubber slurry to the composite fabric is 1: 1;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
The impregnating resin is prepared from the following raw materials in parts by weight: 25 parts of phenolic resin; 7 parts of urea-formaldehyde resin; 3.5 parts of hexamethylenetetramine; 80 parts of alcohol. The preparation method comprises mixing phenolic resin, urea-formaldehyde resin and hexamethylenetetramine, pulverizing, adding into a stirrer, adding alcohol, and stirring to obtain uniform impregnating resin solution.
The impregnated rubber slurry is prepared from the following raw materials in parts by weight: 30 parts of styrene butadiene rubber; 12 parts of phenolic resin; 6 parts of sulfur powder; 0.5 part of accelerator CZ; 1 part of antioxidant 1076; magnesium stearate, 1.4 parts; 0.7 part of epoxy octyl stearate; 9 parts of semi-reinforcing carbon black; 10 parts of graphite; 8 parts of aluminum oxide; polyethylene glycol 400, 7 parts; 13 parts of nano montmorillonite; 100 parts of rubber solvent oil.
The preparation steps of the impregnated rubber slurry are as follows:
step S1, starting an open type rubber mixing mill, trial-running for 2 minutes, adjusting the roller spacing to be 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 3 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, uniformly mixing at 82 ℃, and then wrapping in a triangular bag for 3 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and nano montmorillonite, after the materials are mixed uniformly, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 4 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, pulping for 4.5 hours, and obtaining the impregnated rubber slurry when no particles exist in the rubber slurry.
The preparation method of the nano montmorillonite comprises the following steps: calcining montmorillonite at 700 ℃ for 1.5 hours, taking out, grinding with water until the size is 400-500 meshes, and spray-drying to obtain the montmorillonite composite material; the weight ratio of montmorillonite to water is 100: 50.
example 5: effects of the embodiment
The clutch facing prepared in examples 1 to 4 was tested in accordance with GB/T5764-1998 using a constant speed tester and had frictional wear properties as shown in tables 1 and 2 below. Wherein, the clutch facing prepared in examples 2 and 3 is substantially identical to example 1, and the test data thereof is not listed separately.
TABLE 1 Friction and wear Properties of example 1 Clutch facing
TABLE 2 Friction wear Performance of example 4 (comparative example) Clutch facing
The results show that the clutch facing provided by the invention has stable friction coefficient, low abrasion and good performance, and the technical effect is related to the modified nano montmorillonite. The clutch facing is simple in preparation method, does not need harsh conditions, and is suitable for industrial mass production.
The above-described embodiments are intended to illustrate the substance of the present invention, but are not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the true spirit and scope of the invention.
Claims (2)
1. The clutch facing containing the nano filler is prepared by impregnating composite cloth with resin and rubber slurry, winding blanks, hot pressing, heat treating and grinding, and is characterized in that:
the impregnating resin is prepared from the following raw materials in parts by weight: 20-30 parts of phenolic resin; 6-8 parts of urea-formaldehyde resin; 3-4 parts of hexamethylenetetramine; 75-85 parts of alcohol;
the impregnated rubber slurry is prepared from the following raw materials in parts by weight: 23-37 parts of styrene butadiene rubber; 10-14 parts of phenolic resin; 5-7 parts of sulfur powder; 0.4-0.6 part of accelerator CZ; 0.8-1.2 parts of an antioxidant 1076; 1.2-1.6 parts of magnesium stearate; 0.6-0.8 part of epoxy octyl stearate; 8-10 parts of semi-reinforcing carbon black; 8-12 parts of graphite; 7-9 parts of aluminum oxide; 6-8 parts of polyethylene glycol; 12-14 parts of modified nano montmorillonite; 85-115 parts of rubber solvent oil;
the preparation method of the modified nano montmorillonite comprises the following steps: calcining montmorillonite at 700 ℃ for 1.5 hours, taking out the montmorillonite, grinding the montmorillonite with triethanolamine, vinyl trimethoxy silane and water until the size is 400-500 meshes, and performing spray drying to obtain the montmorillonite-vinyl trimethoxy silane-based montmorillonite composite material; the weight ratio of montmorillonite, triethanolamine, vinyl trimethoxy silane and water is 100: 20: 15: 50;
the preparation method of the impregnating resin comprises the following steps: uniformly mixing phenolic resin, urea resin and hexamethylenetetramine, crushing, adding alcohol, uniformly mixing, and putting into a stirrer to prepare an impregnating resin solution;
the preparation method of the impregnated rubber slurry comprises the following steps:
step S1, starting an open type rubber mixing mill, trial-running for 1-2 minutes, adjusting the roller spacing to 1-2 mm, placing the weighed styrene-butadiene rubber and phenolic resin on the rubber mixing mill, plasticating for 2-3 minutes, after wrapping rollers, adding an accelerator CZ, an antioxidant 1076 and aluminum oxide, mixing uniformly at 80-85 ℃, and then wrapping in a triangular bag for 2-3 times;
step S2, after the roller spacing is adjusted to be 3-4 mm, adding semi-reinforcing carbon black and modified nano montmorillonite, after the materials are uniformly mixed, cleaning the materials in a receiving tray, adding the materials into the mixed rubber, finally adding sulfur powder, and continuously beating for 3-4 times to obtain triangular bags;
step S3, adjusting the roller spacing to be 1-2 mm, carrying out thin blanking on the rubber material roller, controlling the roller temperature to be less than 70 ℃, and cutting strips for later use;
and step S4, metering the cut adhesive tape into a pulping machine, crushing and putting magnesium stearate, octyl epoxy stearate, graphite and polyethylene glycol 400 into the pulping machine to obtain a mixed material, adding rubber solvent oil, pulping for 4-5 hours, and obtaining the impregnated rubber slurry when no particles exist in the rubber slurry.
2. A method of making a clutch facing according to claim 1, comprising the steps of:
step S1, drying the composite cloth to make the absorbed water content less than or equal to 1.5%;
step S2, the composite cloth is dipped in dipping resin to control the resin content to 18-22%;
step S3, dipping the composite fabric into the dipped rubber slurry, wherein the weight ratio of the dipped rubber slurry to the dipped rubber slurry is 1: 0.8-1.2;
and step S4, winding the blank, hot pressing, heat treating and grinding to obtain the finished product.
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| CN108591319A (en) * | 2018-05-10 | 2018-09-28 | 来安县隆华摩擦材料有限公司 | A kind of heat treatment process of automobile clutch production and processing |
| CN108724762A (en) * | 2018-05-10 | 2018-11-02 | 来安县隆华摩擦材料有限公司 | A kind of processing of car clutch face sheet is hot pressed into technique |
| CN110744886A (en) * | 2019-11-01 | 2020-02-04 | 南方科技大学 | Metal protective film and preparation method thereof |
| CN113858492B (en) * | 2021-08-26 | 2024-05-28 | 浙江科马摩擦材料股份有限公司 | AMT clutch facing based on nanometer boron nitride enhancement and processing equipment |
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| CN102372863A (en) * | 2010-08-12 | 2012-03-14 | 中国石油化工股份有限公司 | Montmorillonite-styrene butadiene rubber nanocomposite material |
| CN103453038A (en) * | 2013-08-20 | 2013-12-18 | 来安县隆华摩擦材料有限公司 | High-wear-resistance clutch facing |
| CN103453058A (en) * | 2013-08-20 | 2013-12-18 | 来安县隆华摩擦材料有限公司 | Clutch facing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090298993A1 (en) * | 2008-05-27 | 2009-12-03 | Kosinski Leonard E | Phenolic resin compositions containing well dispersed wholly inorganic expansible clay particles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372863A (en) * | 2010-08-12 | 2012-03-14 | 中国石油化工股份有限公司 | Montmorillonite-styrene butadiene rubber nanocomposite material |
| CN103453038A (en) * | 2013-08-20 | 2013-12-18 | 来安县隆华摩擦材料有限公司 | High-wear-resistance clutch facing |
| CN103453058A (en) * | 2013-08-20 | 2013-12-18 | 来安县隆华摩擦材料有限公司 | Clutch facing |
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