CN115678124B - Natural rubber composite material for heavy-duty truck spring rubber support and application thereof - Google Patents
Natural rubber composite material for heavy-duty truck spring rubber support and application thereof Download PDFInfo
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- CN115678124B CN115678124B CN202211497909.3A CN202211497909A CN115678124B CN 115678124 B CN115678124 B CN 115678124B CN 202211497909 A CN202211497909 A CN 202211497909A CN 115678124 B CN115678124 B CN 115678124B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 50
- 239000005060 rubber Substances 0.000 title claims abstract description 50
- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 47
- 229920003052 natural elastomer Polymers 0.000 title claims abstract description 47
- 229920001194 natural rubber Polymers 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical class N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000002135 nanosheet Substances 0.000 claims abstract description 41
- 239000006229 carbon black Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 10
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 10
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 10
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 229920000877 Melamine resin Polymers 0.000 claims description 14
- 239000007900 aqueous suspension Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 14
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 14
- 239000013049 sediment Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- 235000021355 Stearic acid Nutrition 0.000 claims description 9
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 claims description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 9
- 239000008117 stearic acid Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 claims description 8
- UXKQNCDDHDBAPD-UHFFFAOYSA-N 4-n,4-n-diphenylbenzene-1,4-diamine Chemical compound C1=CC(N)=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 UXKQNCDDHDBAPD-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000123 paper Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 12
- 230000020169 heat generation Effects 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010074 rubber mixing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 15
- 239000011159 matrix material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910021392 nanocarbon Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 230000002427 irreversible effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- -1 silane modified carbon nitride Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a natural rubber composite material for a heavy cardboard spring rubber support and application thereof, wherein the natural rubber composite material comprises the following components in parts by weight: 75-85 parts of natural rubber, 15-25 parts of butadiene rubber, 3-10 parts of modified carbon nitride nanosheets, 85-105 parts of carbon black, 5-8 parts of anti-aging agent, 5-10 parts of paraffin oil and 10-17 parts of vulcanizing agent. The invention forms a unique nano dispersion structure in the natural rubber by utilizing the synergistic effect of the modified carbon nitride nano sheet and the carbon black, so that the composite material has the characteristics of excellent mechanical property and ageing resistance, good mechanical property, excellent heat resistance and air ageing resistance, low heat generation and small compression set, and the processability is better, so that the energy consumption in the rubber mixing process can be reduced.
Description
Technical Field
The invention belongs to the technical field of materials for vehicles, and particularly relates to a natural rubber composite material for a heavy clamping plate spring rubber support and application thereof.
Background
Heavy commercial vehicles are an important tool for current logistics, and along with the rapid development of transportation industry, the requirements of smoothness and riding comfort of the heavy commercial vehicles are continuously improved. The suspension system of the heavy commercial vehicle is an important component for influencing the service performance and the comfort of the vehicle, and the leaf spring rubber support is one of key components for determining the performance of the suspension system, so that the working performance of the suspension system is directly influenced. The heavy clamping plate spring rubber support is generally formed by alternately placing and vulcanizing a plurality of layers of rubber and a plurality of layers of steel plates, and is manufactured according to different laminated structures and processes so as to transmit horizontal shearing force. The rubber component is a key factor influencing the vibration damping performance of the leaf spring rubber support, and the quality of the leaf spring rubber support also influences the service life of the leaf spring rubber support. The rubber support can generate temperature rise of materials in a dynamic working environment, and the temperature rise can lead to the deterioration of the rubber material performance and the sharp reduction of the service life.
The rubber composite material applied to the plate spring support needs to have the characteristics of good mechanical property, excellent heat and air aging resistance, low heat generation and small compression set. Excellent mechanical properties are preconditions for ensuring the normal operation of the support; the excellent ageing resistance can ensure that the molecular structure of the rubber material is not greatly changed within a certain time, and the good elasticity is maintained; the small permanent deformation can avoid irreversible plastic deformation of the rubber material to influence the vibration reduction performance of the product; since the mount is in a dynamic working environment for a long period of time, heat generation during dynamic processes causes further deterioration in material structure, and thus rubber materials are also required to have low heat generation characteristics, particularly dynamic heat generation. At present, the common plate spring rubber support in the market generally has difficulty in meeting the requirements at the same time, and the service life is difficult to meet the market requirements, and the root cause of the conventional plate spring rubber support is that the formula design is not reasonable enough, and the application and development of new materials in the plate spring rubber support are relatively backward.
Disclosure of Invention
Aiming at the characteristics that the rubber material in the prior art is difficult to combine with good mechanical property, excellent heat and air aging resistance, low heat generation and small compression set, the invention provides the natural rubber composite material for the heavy clamping plate spring rubber support and the application thereof, and can meet the use requirement of the rubber material for the plate spring rubber support.
The invention is realized by the following technical scheme:
the natural rubber composite material for the heavy clamping plate spring rubber support comprises the following components in parts by weight: 75-85 parts of natural rubber, 15-25 parts of butadiene rubber, 3-10 parts of modified carbon nitride nanosheets, 85-105 parts of carbon black, 5-8 parts of anti-aging agent, 5-10 parts of paraffin oil and 10-17 parts of vulcanizing agent.
Further, the preparation method of the modified carbon nitride nanosheets comprises the following steps:
(1) Sealing melamine or urea with aluminum foil paper, then placing the sealed melamine or urea into a muffle furnace, heating to 500-600 ℃ at a speed of 5-10 ℃/min, preserving heat for 3-4 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain an aqueous suspension of graphitized carbon nitride nano-sheets, drying the aqueous suspension to remove part of water, concentrating, adding a silane coupling agent, stirring at 50-70 ℃ in an oil bath, refluxing and condensing, reacting for 3-6 hours, cooling to room temperature, centrifuging the reaction solution, taking the bottom sediment, and drying to obtain the modified carbon nitride nano-sheets.
Further, the silane coupling agent in the step (2) is bis- [3- (triethoxysilane) propyl ] tetrasulfide or bis- [3- (triethoxysilane) propyl ] -disulfide; the mass ratio of the graphitized carbon nitride nano-sheet to the silane coupling agent is 1:1.
Further, the dispersion in the step (2) is stirring and ultrasonic.
Further, the mass ratio of the N330 to the N762 of the mixture of the carbon black N330 and the N762 is 1:3-1:2.
Further, the anti-aging agent is more than one of N, N-diphenyl-p-phenylenediamine, N-phenyl-1-naphthylamine, 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline and N-cyclohexyl-N' -phenyl-p-phenylenediamine.
Further, the vulcanizing agent comprises: 5-8 parts of zinc oxide, 1.5-3.5 parts of stearic acid, 1.2-2 parts of 4,4' -dimorpholine disulfide, 0.8-1.5 parts of N-tert-butyl-2-benzothiazole sulfenamide and 1.5-2 parts of sulfur.
The invention discloses application of a natural rubber composite material in a heavy clamping plate spring rubber support.
According to the invention, the modified carbon nitride nano-sheets are used as the filler, the silane modified carbon nitride nano-sheets and the natural rubber have good interface compatibility (in the modification process, hydroxyl groups on the surface of graphitized carbon nitride react with silane of the silane coupling agent to form covalent bonds, the coupling agent is connected to the surface of graphene, so that the interface compatibility between the carbon nitride nano-sheets and the organic natural rubber is effectively improved, the dispersion of nano-sheets in the natural rubber matrix is improved), the dispersion of the carbon nitride nano-sheets in the natural rubber matrix can be improved, and the interface interaction is further strengthened in the vulcanization process of the natural rubber, so that the mechanical property of the material is improved, and meanwhile, the heat generation is reduced; in addition, the nano carbon nitride sheet is a good barrier filler, can prevent permeation and diffusion of oxygen, and some active groups on the nano carbon nitride sheet can capture free radicals, so that the ageing process of the natural rubber matrix material is slowed down, and the material is endowed with excellent ageing resistance.
The vulcanizing agent in the invention is a vulcanizing agent of a sulfur vulcanizing system, so that the composite material has excellent elasticity and plastic deformation generated after compression is reduced. In addition, the coupling agent containing sulfide on the surface of the modified carbon nitride nano-sheet can react with the natural rubber to form a covalent bond in the vulcanization process, which is equivalent to the silane coupling agent acting as a bridge between the natural rubber and the modified carbon nitride nano-sheet. Therefore, the chemical interface between the modified carbon nitride nanosheets and the natural rubber matrix, which can form covalent bond, has a synergistic effect with the physical interface between the carbon black and the natural rubber matrix, and has a unique nano dispersion structure, thereby endowing the material with the characteristics of good mechanical property, excellent heat and air aging resistance, low heat generation and small compression set.
All components in the natural rubber composite material can be mixed by traditional rubber processing equipment, such as an open mill and an internal mixer, and the mixed rubber obtained after mixing can be used as a plate spring rubber support material after high-temperature and high-pressure vulcanization; the tensile strength of the prepared natural rubber composite material is more than 18.0MPa, and the elongation at break is more than 400 percent (GB/T528); compression set after 22h of hot air aging at 85 ℃ is less than 25% (GB/T7759.1); after the hot air aging is carried out for 70 hours at the temperature of 100 ℃, the Shore A hardness change is less than 5, the absolute value of the tensile strength change rate is less than 25%, and the absolute value of the elongation at break change rate is less than 30% (GB/T3512); the compression fatigue temperature rise is less than 30 ℃ (GB/T1687.3), and the use requirement of the rubber material for the plate spring rubber support can be met.
Advantageous effects
(1) The natural rubber composite material can be processed by using the processing equipment of the traditional rubber composite material, but the processing performance is better, and the energy consumption in the rubber mixing process can be reduced due to the good processing performance;
(2) The invention forms a unique nano dispersion structure in the natural rubber by utilizing the synergistic effect of the modified carbon nitride nano sheet and the carbon black, so that the composite material has the characteristics of excellent mechanical property and ageing resistance, good mechanical property, excellent heat-air aging resistance, low heat generation and small compression set.
Detailed Description
The above-described matters of the present invention will be described in further detail by way of examples, but it should not be construed that the scope of the above-described subject matter of the present invention is limited to the following examples, and all techniques realized based on the above-described matters of the present invention are within the scope of the present invention.
The parts described in the examples below are parts by weight.
Example 1
A natural rubber composite material for a heavy cardboard spring rubber support comprises 75 parts of natural rubber and 25 parts of butadiene rubber; 5 parts of modified carbon nitride nano-sheet, 25 parts of carbon black (N330) and 60 parts of carbon black (N762); 2 parts of N, N-diphenyl-p-phenylenediamine, 2 parts of N-phenyl-1-naphthylamine and 4 parts of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline; 5 parts of paraffin oil; 5 parts of zinc oxide, 1.5 parts of stearic acid, 1.2 parts of 4,4' -dimorpholine disulfide, 0.8 part of N-tertiary butyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur.
The modified carbon nitride nano-sheet is prepared by the following method:
(1) Sealing melamine with aluminum foil paper, placing the melamine into a muffle furnace, heating to 500 ℃ at a speed of 5 ℃/min, preserving heat for 4 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain water suspension of graphitized carbon nitride nano sheet, drying the water suspension to remove partial water, concentrating, adding bis- [3- (triethoxysilyl) propyl ] tetrasulfide, stirring in 70 deg.C oil bath, reflux condensing, reacting for 3 hr, cooling to room temperature, centrifuging the reaction solution, taking bottom sediment, drying and obtaining the modified carbon nitride nano sheet.
Example 2
A natural rubber composite material for a heavy cardboard spring rubber support comprises 80 parts of natural rubber and 20 parts of butadiene rubber; 3 parts of modified carbon nitride nano-sheet, 30 parts of carbon black (N330) and 75 parts of carbon black (N762); 2 parts of N-phenyl-1-naphthylamine, 3 parts of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline and 2 parts of N-cyclohexyl-N' -phenyl-p-phenylenediamine; 10 parts of paraffin oil; 8 parts of zinc oxide, 3.5 parts of stearic acid, 2 parts of 4,4' -dimorpholine disulfide, 1.5 parts of N-tertiary butyl-2-benzothiazole sulfenamide and 2 parts of sulfur.
The modified carbon nitride nano-sheet is prepared by the following method:
(1) Sealing melamine with aluminum foil paper, placing the melamine into a muffle furnace, heating to 600 ℃ at the speed of 10 ℃/min, preserving heat for 3 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain water suspension of graphitized carbon nitride nano sheet, drying the water suspension to remove partial water, concentrating, adding bis- [3- (triethoxysilyl) propyl ] tetrasulfide, stirring at 50 deg.C in oil bath, reflux condensing, reacting for 6 hr, cooling to room temperature, centrifuging the reaction solution, taking bottom sediment, drying and obtaining the modified carbon nitride nano sheet.
Example 3
A natural rubber composite material for a heavy cardboard spring rubber support comprises 85 parts of natural rubber; 15 parts of butadiene rubber; 8 parts of modified carbon nitride nano-sheet, 30 parts of carbon black (N330) and 60 parts of carbon black (N762); 1 part of N, N-diphenyl p-phenylenediamine, 2 parts of N-phenyl-1-naphthylamine, 1 part of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline and 2 parts of N-cyclohexyl-N' -phenyl p-phenylenediamine; 7 parts of paraffin oil; 6 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of 4,4' -dimorpholine disulfide, 1.5 parts of N-tertiary butyl-2-benzothiazole sulfenamide and 2 parts of sulfur.
The modified carbon nitride nano-sheet is prepared by the following method:
(1) Sealing melamine with aluminum foil paper, placing the melamine into a muffle furnace, heating to 550 ℃ at the speed of 7.5 ℃/min, preserving heat for 3.5 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain water suspension of graphitized carbon nitride nano sheet, drying the water suspension to remove partial water, concentrating, adding bis- [3- (triethoxysilyl) propyl ] -disulfide, stirring in 60 deg.C oil bath, reflux condensing, reacting for 4 hr, cooling to room temperature, centrifuging the reaction solution, taking bottom sediment, drying and obtaining the modified carbon nitride nano sheet.
Example 4
A natural rubber composite material for a heavy cardboard spring rubber support comprises 80 parts of natural rubber; 20 parts of butadiene rubber; 7 parts of modified carbon nitride nano-sheet, 30 parts of carbon black (N330) and 65 parts of carbon black (N762); 2.5 parts of N, N-diphenyl-p-phenylenediamine, 2.5 parts of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline; 8 parts of paraffin oil; 7 parts of vulcanizing agent zinc oxide, 2 parts of stearic acid, 2 parts of 4,4' -dimorpholine disulfide, 1.5 parts of N-tertiary butyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur.
The modified carbon nitride nano-sheet is prepared by the following method:
(1) Sealing melamine with aluminum foil paper, placing the melamine into a muffle furnace, heating to 600 ℃ at the speed of 10 ℃/min, preserving heat for 3 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain water suspension of graphitized carbon nitride nano sheet, drying the water suspension to remove partial water, concentrating, adding bis- [3- (triethoxysilyl) propyl ] -disulfide, stirring in 60 deg.C oil bath, reflux condensing, reacting for 5 hr, cooling to room temperature, centrifuging the reaction solution, taking bottom sediment, drying and obtaining the modified carbon nitride nano sheet.
Example 5
A natural rubber composite material for a heavy cardboard spring rubber support comprises 80 parts of natural rubber; 20 parts of butadiene rubber; 10 parts of modified carbon nitride nano-sheet, 25 parts of carbon black (N330) and 75 parts of carbon black (N762); 3.5 parts of N-phenyl-1-naphthylamine and 3.5 parts of N-cyclohexyl-N' -phenyl-p-phenylenediamine; 9 parts of paraffin oil; 8 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of 4,4' -dimorpholine disulfide, 1.5 parts of N-tertiary butyl-2-benzothiazole sulfenamide and 2 parts of sulfur.
The modified carbon nitride nano-sheet is prepared by the following method:
(1) Sealing melamine with aluminum foil paper, placing the melamine into a muffle furnace, heating to 550 ℃ at a speed of 5 ℃/min, preserving heat for 4 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain water suspension of graphitized carbon nitride nano sheet, drying the water suspension to remove partial water, concentrating, adding bis- [3- (triethoxysilyl) propyl ] -disulfide, stirring in 60 deg.C oil bath, reflux condensing, reacting for 4 hr, cooling to room temperature, centrifuging the reaction solution, taking bottom sediment, drying and obtaining the modified carbon nitride nano sheet.
Comparative example 1
A natural rubber composite material for a heavy cardboard spring rubber support comprises 75 parts of natural rubber and 25 parts of butadiene rubber; 30 parts of carbon black (N330), 60 parts of carbon black (N762); 2 parts of N, N-diphenyl-p-phenylenediamine, 2 parts of N-phenyl-1-naphthylamine and 4 parts of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline; 5 parts of paraffin oil; 5 parts of zinc oxide, 1.5 parts of stearic acid, 1.2 parts of 4,4' -dimorpholine disulfide, 0.8 part of N-tertiary butyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur.
Comparative example 2
A natural rubber composite material for a heavy cardboard spring rubber support comprises 80 parts of natural rubber and 20 parts of butadiene rubber; 25 parts of carbon black (N330), 60 parts of carbon black (N762); 2 parts of N, N-diphenyl-p-phenylenediamine, 2 parts of N-phenyl-1-naphthylamine and 4 parts of 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline; 5 parts of paraffin oil; 5 parts of zinc oxide, 1.5 parts of stearic acid, 1.2 parts of 4,4' -dimorpholine disulfide, 0.8 part of N-tertiary butyl-2-benzothiazole sulfenamide and 1.5 parts of sulfur.
The heavy cardboard spring rubber composite materials prepared in examples 1-5 and comparative examples 1-2 were prepared into rubber products by an open mill so that the rubber products could be applied to heavy cardboard spring rubber supports. The properties of the rubber products made of the composite materials of examples 1 to 5 and comparative examples 1 to 2 were analyzed, and the results are shown in Table 1 below.
Table 1 Natural rubber products Performance Meter for heavy cardboard spring rubber support
。
Claims (6)
1. The natural rubber composite material for the heavy clamping plate spring rubber support is characterized by comprising the following components in parts by weight: 75-85 parts of natural rubber, 15-25 parts of butadiene rubber, 3-10 parts of modified carbon nitride nano-sheets, 85-105 parts of carbon black, 5-8 parts of anti-aging agent, 5-10 parts of paraffin oil and 10-17 parts of vulcanizing agent;
the preparation method of the modified carbon nitride nanosheets comprises the following steps:
(1) Sealing melamine or urea with aluminum foil paper, then placing the sealed melamine or urea into a muffle furnace, heating to 500-600 ℃ at a speed of 5-10 ℃/min, preserving heat for 3-4 hours, naturally cooling to room temperature, and grinding a product to obtain graphitized carbon nitride;
(2) Dispersing graphitized carbon nitride in water, removing bottom sediment to obtain an aqueous suspension of graphitized carbon nitride nano-sheets, drying the aqueous suspension to remove part of water, concentrating, adding a silane coupling agent, stirring at 50-70 ℃ in an oil bath, refluxing and condensing, reacting for 3-6 hours, cooling to room temperature, centrifuging the reaction solution, taking the bottom sediment, and drying to obtain the modified carbon nitride nano-sheets;
the vulcanizing agent comprises: 5-8 parts of zinc oxide, 1.5-3.5 parts of stearic acid, 1.2-2 parts of 4,4' -dimorpholine disulfide, 0.8-1.5 parts of N-tert-butyl-2-benzothiazole sulfenamide and 1.5-2 parts of sulfur.
2. The natural rubber composite for a heavy cardboard spring rubber bearing according to claim 1, wherein the silane coupling agent in step (2) is bis- [3- (triethoxysilane) propyl ] tetrasulfide or bis- [3- (triethoxysilane) propyl ] -disulfide; the mass ratio of the graphitized carbon nitride nano-sheet to the silane coupling agent is 1:1.
3. The natural rubber composite for a heavy cardboard spring rubber bearing according to claim 1, wherein the dispersion of step (2) is stirring and ultrasound.
4. The natural rubber composite for the heavy cardboard spring rubber support according to claim 1, wherein the mixture of carbon black N330 and N762 is characterized in that the mass ratio of N330 to N762 is 1:3-1:2.
5. The natural rubber composite material for the heavy cardboard spring rubber support according to claim 1, wherein the anti-aging agent is one or more of N, N-diphenyl-p-phenylenediamine, N-phenyl-1-naphthylamine, 6-ethoxy-2, 4-trimethyl-1, 2-dihydroquinoline, and N-cyclohexyl-N' -phenyl-p-phenylenediamine.
6. Use of the natural rubber composite material according to any one of claims 1-5 in heavy cardboard spring rubber supports.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032839A1 (en) * | 2006-09-15 | 2008-03-20 | Ube Nitto Kasei Co., Ltd. | Base material covered with metal layer and process for producing the same |
| CN104401948A (en) * | 2014-11-17 | 2015-03-11 | 长安大学 | Preparation method for single-layer graphite-type carbon nitride nanosheet solution |
| CN106080466A (en) * | 2016-08-29 | 2016-11-09 | 苏州万隆汽车零部件股份有限公司 | A kind of crashproof skeleton of bumper |
| CN106496701A (en) * | 2016-12-20 | 2017-03-15 | 佛山市高明区塑料行业协会 | A kind of modified abrasion resistant high impact-resistant butadiene-styrene rubber |
| CN110813347A (en) * | 2019-10-14 | 2020-02-21 | 西安交通大学 | Molecular doping modified graphite phase carbon nitride photocatalyst with three-dimensional loose structure and preparation method and application thereof |
| CN112480505A (en) * | 2020-11-05 | 2021-03-12 | 安徽红桥金属制造有限公司 | High-flame-retardant and aging-resistant air spring |
-
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- 2022-11-28 CN CN202211497909.3A patent/CN115678124B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032839A1 (en) * | 2006-09-15 | 2008-03-20 | Ube Nitto Kasei Co., Ltd. | Base material covered with metal layer and process for producing the same |
| CN104401948A (en) * | 2014-11-17 | 2015-03-11 | 长安大学 | Preparation method for single-layer graphite-type carbon nitride nanosheet solution |
| CN106080466A (en) * | 2016-08-29 | 2016-11-09 | 苏州万隆汽车零部件股份有限公司 | A kind of crashproof skeleton of bumper |
| CN106496701A (en) * | 2016-12-20 | 2017-03-15 | 佛山市高明区塑料行业协会 | A kind of modified abrasion resistant high impact-resistant butadiene-styrene rubber |
| CN110813347A (en) * | 2019-10-14 | 2020-02-21 | 西安交通大学 | Molecular doping modified graphite phase carbon nitride photocatalyst with three-dimensional loose structure and preparation method and application thereof |
| CN112480505A (en) * | 2020-11-05 | 2021-03-12 | 安徽红桥金属制造有限公司 | High-flame-retardant and aging-resistant air spring |
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