CN114316383A - Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof - Google Patents
Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof Download PDFInfo
- Publication number
- CN114316383A CN114316383A CN202111436275.6A CN202111436275A CN114316383A CN 114316383 A CN114316383 A CN 114316383A CN 202111436275 A CN202111436275 A CN 202111436275A CN 114316383 A CN114316383 A CN 114316383A
- Authority
- CN
- China
- Prior art keywords
- damping
- rubber
- heat
- rubber material
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a heat-conducting high-damping vibration-damping rubber material, and a preparation method and application thereof, and belongs to the field of high polymer materials. The raw materials of the heat-conducting high-damping vibration-damping rubber material comprise a rubber mixture, heat-conducting filler, a reinforcing agent, an activating agent, a tackifier, a vulcanizing agent, an accelerating agent and an anti-aging agent; the heat-conducting high-damping vibration damping rubber material is prepared through the technological processes of mixing by an internal mixer, thinning and homogenizing by an open mill and vulcanizing. The heat-conducting high-damping vibration attenuation rubber material can solve the problem of low heat conduction of the rubber material of the automobile vibration attenuation element, and can improve the damping performance and dynamic aging life of parts.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly belongs to a heat-conducting high-damping vibration-damping rubber material, and a preparation method and application thereof.
Background
With the development of high-performance technology for automobile manufacturing, higher requirements are put on rubber vibration reduction elements from the viewpoints of vibration reduction, noise, comfort and the like. The main principle of rubber vibration reduction is to utilize the viscoelasticity of macromolecules to absorb vibration energy, convert the absorbed mechanical energy into heat energy and dissipate the heat energy. The natural rubber has excellent comprehensive performance, but the molecular chain of the natural rubber is lack of large steric hindrance groups, so that the damping vibration attenuation performance is poor, the damping factor of the natural rubber can be improved through blending modification, but because the high-damping rubber material has large hysteresis loss and poor thermal conductivity, the material is accompanied by higher heat generation while bearing cyclic load, so that the surface and internal temperature of the material is increased, the fatigue damage of the material is accelerated, and therefore, the problem of the heat conduction of the material is considered while improving the damping factor of the natural rubber.
The patent application with the publication number of 110229387A discloses a composite rubber material of a graphene tire and a preparation method thereof, wherein the composite rubber material of the graphene tire comprises the following components in parts by weight: 100 parts of rubber, 25-100 parts of carbon black CB, 10-40 parts of modified multi-layer graphene SMKGO, 2-5 parts of stearic acid, 10-20 parts of paraffin oil, 1-2 parts of DM, 1-2 parts of TMTD1-2 parts of zinc oxide, 1-2 parts of sulfur and 400 parts of coupling agent solution; the heat-conducting rubber tire has good heat conductivity, can obviously shorten the vulcanization time in the tire vulcanization process, and can release heat generated by deformation in the tire use process in time, thereby reducing the running temperature of the tire and ensuring the service life of the tire; the modified multilayer graphene is prepared by modifying graphene oxide by adopting a silane coupling agent, absolute ethyl alcohol, deionized water and oxalic acid, and only solves the problems of the agglomeration of graphene and poor dispersibility of graphene in a rubber matrix.
The patent application with the publication number of CN112029203A discloses a high-damping rubber material with high vibration damping performance, which is composed of 100 parts of brominated butyl rubber, 40-60 parts of reinforcing agent, 20-60 parts of filler, 10-30 parts of plasticizer, 1-3 parts of acid-base regulator, 1-3 parts of mold release agent, 2-6 parts of anti-aging agent RD 2-6 parts of TKg regulator, 2-10 parts of activating agent, 1-2 parts of activating auxiliary agent and 4-16 parts of vulcanizing agent; the high damping rubber material has high loss factor (more than 1.0) and strong damping capacity by replacing the main rubber, the carbon black, the TKg regulator, the vulcanization system and the like; the peak value of the loss factor of the material is made larger by the TKg regulator, and the peak value is also made to fall within the use temperature range; the vulcanization system enables longer cross-linking bonds to be formed among molecular chains so as to increase the displacement of forced movement of the molecular chains, thereby improving the loss factor of the material; in addition, the brominated butyl main rubber and the superfine carbon black can overcome larger inherent internal loss when the molecular chain of the rubber is displaced, so that the loss factor of the material is improved, and the vibration reduction capability is improved; the invention only considers the improvement of the loss factor of the rubber, and does not consider the factors of material temperature rise, fatigue damage and the like of the damping rubber in the using process.
Disclosure of Invention
The invention provides a heat-conducting high-damping vibration attenuation rubber material which can solve the problem of low heat conduction of a rubber material of an automobile vibration attenuation element, improve the damping performance of parts and prolong the dynamic aging life, and a preparation method of the heat-conducting high-damping vibration attenuation rubber material.
The heat-conducting high-damping vibration-damping rubber material is composed of the following components in parts by weight: 90-140 parts of a rubber mixture, 0.5-2 parts of a heat-conducting filler, 40-50 parts of a reinforcing agent, 3-6 parts of an activating agent, 10-15 parts of a tackifier, 1-2 parts of a vulcanizing agent, 1-1.5 parts of a promoter and 1-2 parts of an anti-aging agent;
the rubber mixture comprises the following components in parts by weight: 40-60 parts of natural rubber, 40-60 parts of brominated butyl rubber and 10-20 parts of epoxidized natural rubber;
the heat-conducting filler is selected from MKGB graphene oxide modified by reduction functionalization of graphene oxide by 2-mercaptobenzimidazole.
The heat-conducting high-damping vibration damping rubber material is prepared by blending natural rubber and brominated butyl rubber, and adding epoxidized natural rubber and high-heat-conducting filler MB which play a compatible role into the blended natural rubber and brominated butyl rubber to reduce graphene oxide.
The brominated butyl rubber is a product obtained by introducing bromine atoms into partial double bonds of the butyl rubber under certain conditions, and the characteristics of high stability and excellent damping performance of the butyl rubber are maintained; the brominated butyl rubber has high reactivity and can be co-vulcanized with epoxidized natural rubber; the epoxidized natural rubber has double bonds and epoxy groups in molecules, has similar performance to natural rubber, can be well compatible, and simultaneously has compatibility with polar brominated butyl rubber due to the existence of the epoxy groups, so that the compatibility of the natural rubber and the brominated butyl rubber is increased, and the co-vulcanization of three colloids of the natural rubber, the brominated butyl rubber and the epoxidized natural rubber is realized. In addition, the graphene has excellent heat conduction performance, and the heat conductivity is about 5000W/(m.K), because the graphene is of a plurality of hexagonal sheet structures consisting of carbon atoms, and besides the heat conduction of graphene sheet layers, the hexagonal cavities can also lead out heat, so that the heat can be prevented from being accumulated in rubber, and the thermal aging phenomenon of the material can be avoided. The MB reduced graphene oxide is prepared by reducing and functionalizing the graphene oxide by adopting 2-mercaptobenzimidazole, the 2-mercaptobenzimidazole can also be used as an antioxidant of rubber, the mercapto group of the 2-mercaptobenzimidazole is easy to oxidize and has good reducing capability, the mercapto group of the 2-mercaptobenzimidazole reacts with the epoxy functional group and the hydroxyl functional group of the graphene oxide to reduce the graphene oxide into the reduced graphene oxide, meanwhile, the mercapto group and the amino group of the 2-mercaptobenzimidazole can react with the carboxyl group at the edge of the graphene oxide, and the 2-mercaptobenzimidazole is grafted to the graphene oxide to functionalize the graphene oxide, so that the chemical connection between the MB reduced graphene oxide and the rubber is enabled to be stronger in interface effect, the dispersity in the rubber is good, and the interface thermal resistance between the MB reduced graphene oxide and the rubber is reduced, a good heat conduction path is built, the heat conduction performance of the rubber material can be improved, and the graphene has excellent tensile strength (130KGpa) and Young modulus (1Tpa), so that when the heat-conduction high-damping vibration damping rubber material is stretched by external force, the network structure of the MB reduced graphene oxide and the rubber molecular chains can bear the external force together, and the tensile performance of the heat-conduction high-damping vibration damping rubber material is further improved.
Preferably, the reinforcing agent is selected from carbon black N220 or/and carbon black N330.
Preferably, the tackifier is selected from C5 petroleum resin or/and naphthenic oil.
Preferably, the activator is selected from zinc oxide compounded with stearic acid.
Preferably, the mass ratio of the zinc oxide to the stearic acid is (2-4): 1.
preferably, the vulcanizing agent is selected from sulfur.
Preferably, the accelerator is selected from dibenzothiazyl disulfide (accelerator DM) or/and N-cyclohexyl-2-benzothiazolesulfenamide (accelerator CZ) or/and N, N-dicyclohexyl-2-benzothiazolesulfenamide (accelerator DZ).
Preferably, the antioxidant is selected from N, N '-di (β -naphthyl) p-phenylenediamine (antioxidant DNP) and/or N-isopropyl-N' -phenyl-p-phenylenediamine (antioxidant 4010 NA).
The preparation method of the MB reduced graphene oxide comprises the following steps: preparing a 1% 2-mercaptobenzimidazole ethanol solution, and adding graphene oxide powder, wherein the mass ratio of the 2-mercaptobenzimidazole to the graphene oxide powder is (4-6): stirring for 2-4 h, and performing suction filtration, cleaning and drying to obtain the MB reduced graphene oxide.
The invention also provides a preparation method of the heat-conducting high-damping vibration-damping rubber material, which comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in an internal mixer according to the above parts by mass for internal mixing to prepare a rubber mixture;
(2) adding the heat-conducting filler, the reinforcing agent, the tackifier, the activator, the vulcanizing agent, the accelerator and the anti-aging agent into the internal mixer in the step (1) according to the mass fraction, and continuously carrying out internal mixing to prepare a mixed rubber material;
(3) and (3) placing the mixed rubber sheet prepared in the step (2) on a flat vulcanizing machine, and vulcanizing to prepare the heat-conducting high-damping vibration damping rubber material.
Preferably, in the step (1), the banburying temperature of the banbury mixer is 90-100 ℃, and the banburying time is 10-20 min.
Preferably, in the step (2), the banburying temperature of the banbury mixer is 90-100 ℃, and the banburying time is 8-10 min.
Preferably, the mixed rubber material prepared in the step (2) is subjected to thin-passing and homogenizing by using an open mill before vulcanization.
Preferably, the temperature of the open mill is 40-55 ℃, the roller spacing is 0.5-1 mm, and the thin-passing average refining time is 10-20 min.
Preferably, in the step (3), the vulcanizing temperature is 140-150 ℃, and the vulcanizing time is 20-30 min.
The heat-conducting high-damping vibration-damping rubber material is used for preparing automobile vibration-damping rubber elements.
The automobile vibration damping rubber element comprises an engine suspension, a limiting block, a plate spring and a plate-grinding damping sheet, a rubber spherical hinge and a rubber bushing.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the chemical connection between the MB reduced graphene oxide and the rubber is adopted, so that the interface effect is stronger, the dispersibility in the rubber is good, the interface thermal resistance between the MB reduced graphene oxide and the rubber is reduced, and a good heat conduction path is built, so that the heat conductivity of the heat-conducting high-damping vibration damping rubber material provided by the invention is improved by 150%, and the heat conductivity is excellent.
(2) The heat-conducting high-damping vibration attenuation rubber material provided by the invention is a mixture of natural rubber, brominated butyl rubber and epoxidized natural rubber, the adopted brominated butyl rubber has dense side methyl molecular chains, the internal loss of chain segments is large, the damping performance is good, the loss peak width and the loss peak value of the blend rubber can be increased by blending the natural rubber and the brominated butyl rubber, the damping coefficient of the heat-conducting high-damping vibration attenuation rubber material provided by the invention is improved by about 60%, and the heat-conducting high-damping vibration attenuation rubber material has excellent damping performance.
(3) The heat-conducting high-damping vibration attenuation rubber material provided by the invention improves the damping performance and dynamic fatigue durability of a vibration attenuation element, and can improve the comfort and smoothness of a whole vehicle in the driving process.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but it should not be construed that the scope of the present invention is limited to the following examples.
Example 1
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 18Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 2.25Kg of carbon black N2206 Kg, 2.25Kg of C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of accelerator DM and 0.3Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 7.5Kg of natural rubber, 7.5Kg of brominated butyl rubber and 3Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 2.4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 0.6Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 10min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 8min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 20min, wherein the temperature of the open mill is 40 ℃, and the roller spacing of the open mill is 1mm, so as to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 140 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 2
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 19.5Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 2.25Kg of carbon black N2206 Kg, C5 petroleum resin, 0.3Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of accelerator DZ and 0.3Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 60Kg of natural rubber, 50Kg of brominated butyl rubber and 20Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 2.4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 0.6Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DZ and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 20min, wherein the temperature of the open mill is 45 ℃, and the roller spacing of the open mill is 0.5mm, so as to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 145 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 3
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 19.5Kg of rubber mixture, 0.225Kg of MB reduced graphene oxide, 2.25Kg of carbon black N2206 Kg, C5 petroleum resin, 0.72Kg of zinc oxide, 0.18Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of promoter CZ and 0.3Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 9Kg of natural rubber, 7.5Kg of brominated butyl rubber and 3Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 3Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 0.5Kg of graphene oxide powder, stirring for 4h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator CZ and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to obtain a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 15min, wherein the temperature of the open mill is 55 ℃, and the roller spacing of the open mill is 0.5mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 145 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 4
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 19.5Kg of rubber mixture, 0.075Kg of MB reduced graphene oxide, 2.25Kg of carbon black N2206 Kg, C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.225Kg of accelerator DM and 0.3Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 9Kg of natural rubber, 7.5Kg of brominated butyl rubber and 3Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 3Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 0.5Kg of graphene oxide powder, stirring for 3h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio in an internal mixer at 95 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 95 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 20min, wherein the temperature of the open mill is 55 ℃, and the roller spacing of the open mill is 0.6mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 145 ℃, the vulcanization time is 20min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 5
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 18Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 0.8 Kg of carbon black N3308 Kg, 3Kg of naphthenic oil, 0.6Kg of zinc oxide, 0.2Kg of stearic acid, 0.4Kg of sulfur, 0.2Kg of accelerator DZ and 0.4Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 8Kg of natural rubber, 8Kg of brominated butyl rubber and 2Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 3h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 90 ℃ for internal mixing for 10min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N330, naphthenic oil, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 90 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly thin milling for 10min, wherein the temperature of the open mill is 45 ℃, and the roller spacing of the open mill is 1mm, so as to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 145 ℃, the vulcanization time is 20min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 6
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 18Kg of rubber mixture, 0.225Kg of MB reduced graphene oxide, 7.5Kg of carbon black, 2.25Kg of C5 petroleum resin, 0.6Kg of zinc oxide, 0.15Kg of stearic acid, 0.225Kg of sulfur, 0.15Kg of accelerator DM and 0.15Kg of antioxidant DNP;
the rubber mixture comprises the following components in parts by weight: 9Kg of natural rubber, 6Kg of brominated butyl rubber and 3Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 5Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 3h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent DNP into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 15min, wherein the temperature of the open mill is 50 ℃, and the roller spacing of the open mill is 0.8mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 145 ℃, the vulcanization time is 25min, and carrying out compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 7
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 16.5Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 7.5Kg of carbon black N3307, 2.25Kg of C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of accelerator DM and 0.3Kg of antioxidant DNP;
the rubber mixture comprises the following components in parts by weight: 9Kg of natural rubber, 6Kg of brominated butyl rubber and 1.5Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N330, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent DNP into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 15min, wherein the temperature of the open mill is 50 ℃, and the roller spacing of the open mill is 0.7mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 8
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 16.5Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 7.5Kg of carbon black, 1.5Kg of C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of accelerator DM and 0.3Kg of antioxidant DNP;
the rubber mixture comprises the following components in parts by weight: 60Kg of natural rubber, 40Kg of brominated butyl rubber and 10Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent DNP into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 15min, wherein the temperature of the open mill is 45 ℃, and the roller spacing of the open mill is 0.8mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 9
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 16.5Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 7.5Kg of carbon black, 1.5Kg of C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.15Kg of sulfur, 0.15Kg of accelerator DM and 0.15Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 50Kg of natural rubber, 50Kg of brominated butyl rubber and 10Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 4Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 100 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) placing the mixed rubber material prepared in the step (2) into an open mill for uniformly milling for 15min, wherein the temperature of the open mill is 50 ℃, and the roller spacing of the open mill is 0.7mm to prepare a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet prepared in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and performing compression molding to obtain the heat-conducting high-damping vibration damping rubber material.
Example 10
A heat-conducting high-damping vibration-damping rubber material comprises the following components in parts by weight: 16.5Kg of rubber mixture, 0.3Kg of MB reduced graphene oxide, 7.5Kg of carbon black, 1.5Kg of C5 petroleum resin, 0.45Kg of zinc oxide, 0.15Kg of stearic acid, 0.3Kg of sulfur, 0.15Kg of accelerator DM and 0.3Kg of anti-aging agent 4010 NA;
the rubber mixture comprises the following components in parts by weight: 6Kg of natural rubber, 9Kg of brominated butyl rubber and 1.5Kg of epoxidized natural rubber.
The preparation method of the MB reduced graphene oxide comprises the following steps: weighing 6Kg of 2-mercaptobenzimidazole, preparing 1% 2-mercaptobenzimidazole ethanol solution, adding 1Kg of graphene oxide powder, stirring for 2h, performing suction filtration, cleaning and drying to obtain MB reduced graphene oxide.
The preparation method of the heat-conducting high-damping vibration-damping rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in the weight ratio into an internal mixer at 90 ℃ for internal mixing for 15min to prepare a rubber mixture;
(2) adding the MB reduced graphene oxide, carbon black N220, C5 petroleum resin, zinc oxide, stearic acid, sulfur, an accelerator DM and an anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 90 ℃ to prepare a mixed rubber material;
(3) and (3) putting the mixed rubber material prepared in the step (2) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and the heat-conducting high-damping vibration damping rubber material is obtained by compression molding.
Comparative example 1
A common damping rubber material comprises the following components by weight: 16Kg of natural rubber, 2.4Kg of C5 petroleum resin, 6.4Kg of carbon black, 0.48Kg of zinc oxide, 0.16Kg of stearic acid, 0.32Kg of sulfur, 0.16Kg of accelerator DM and 0.16Kg of antioxidant 4010 NA.
The preparation method of the common damping rubber material comprises the following steps:
(1) placing the natural rubber with the weight in an internal mixer at 100 ℃ for mixing for 15 min;
(2) adding the C5 petroleum resin, the carbon black N220, the zinc oxide, the stearic acid, the sulfur, the accelerator DM and the anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to obtain a mixed rubber material;
(3) putting the mixed rubber material obtained in the step (2) into an open mill, uniformly milling for 15min at the temperature of 50 ℃, wherein the roller distance of the open mill is 1mm, and preparing a mixed rubber sheet;
(4) and (4) placing the mixed rubber sheet obtained in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and carrying out compression molding to obtain the common vibration rubber material.
Comparative example 2:
a high-damping vibration-damping rubber material comprises the following components in parts by weight: 8Kg of natural rubber, 8Kg of brominated butyl rubber, 1.6Kg of epoxy natural rubber, 2.4Kg of C5 petroleum resin, 6.4Kg of carbon black N2206, 0.48Kg of zinc oxide, 0.16Kg of stearic acid, 0.32Kg of sulfur, 0.16Kg of accelerator DM and 0.16Kg of antioxidant 4010 NA.
The preparation method of the high-damping vibration attenuation rubber material comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in an internal mixer at 100 ℃ for mixing for 20 min;
(2) adding the C5 petroleum resin, the carbon black N220, the zinc oxide, the stearic acid, the sulfur, the accelerator DM and the anti-aging agent 4010NA into the internal mixer in the step (1), and continuously mixing for 10min at 100 ℃ to prepare a mixed rubber material;
(3) putting the mixed rubber material obtained in the step (2) into an open mill, uniformly milling for 15min at the temperature of 50 ℃, wherein the roller distance of the open mill is 1mm, and preparing a mixed rubber sheet;
(4) and (4) putting the mixed rubber material obtained in the step (3) on a flat vulcanizing machine for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 30min, and carrying out compression molding to obtain the high-damping vibration damping rubber material.
Testing the tensile property of the rubber material according to GB/T528;
cutting the vulcanized rubber material into small wafers with the thickness of 2mm and the diameter of 30mm, and measuring the thermal conductivity of the rubber material by using a DRL-III thermal conductivity coefficient tester;
and a dynamic mechanical analyzer (DMTA) is adopted to carry out damping coefficient test according to HB7655 forced non-resonant test method for dynamic mechanical properties of plastics and composite materials.
TABLE 1 data of Performance test of rubber materials prepared in examples 1 to 10 and comparative examples 1 to 2
From the test data results in table 1, based on the uniform dispersion of the MB-reduced graphene oxide in the rubber matrix, the effect of a good interface between the MB-reduced graphene oxide and the matrix is beneficial to the conduction of heat, a high-efficiency heat conduction path is formed, the heat conductivity of the rubber material can be improved by about 150%, the rubber material has excellent heat conductivity, and meanwhile, due to the filler network structure of the modified graphite oxide, the tensile property of the material is improved. Compared with pure natural rubber, the brominated butyl rubber and the natural rubber are used together, so that the damping factor tan delta of the rubber material is improved by 60%, and the damping performance of the material is improved.
Claims (10)
1. The heat-conducting high-damping vibration damping rubber material is characterized by comprising the following raw materials in parts by weight: 90-140 parts of a rubber mixture, 0.5-2 parts of a heat-conducting filler, 40-50 parts of a reinforcing agent, 3-6 parts of an activating agent, 10-15 parts of a tackifier, 1-2 parts of a vulcanizing agent, 1-1.5 parts of a promoter and 1-2 parts of an anti-aging agent;
the rubber mixture comprises the following components in parts by weight: 40-60 parts of natural rubber, 40-60 parts of brominated butyl rubber and 10-20 parts of epoxidized natural rubber;
the heat conducting filler is selected from MB reduced graphene oxide modified by reduction functionalization of graphene oxide through 2-mercaptobenzimidazole.
2. The heat-conducting high-damping vibration damping rubber material as claimed in claim 1, wherein the preparation method of MB reduced graphene oxide comprises the following steps: preparing a 1% 2-mercaptobenzimidazole ethanol solution, and adding graphene oxide powder, wherein the mass ratio of the 2-mercaptobenzimidazole graphene oxide powder is (4-6): stirring for 2-4 h, and performing suction filtration, cleaning and drying to obtain the MB reduced graphene oxide.
3. The heat-conducting high-damping vibration-damping rubber material as claimed in claim 1,
the reinforcing agent is selected from carbon black N220 or/and carbon black N330;
the tackifier is selected from C5 petroleum resin or/and naphthenic oil;
the activating agent is selected from zinc oxide compounded stearic acid;
the vulcanizing agent is selected from sulfur;
the accelerator is selected from dibenzothiazyl disulfide or/and N-cyclohexyl-2-benzothiazole sulfonamide or/and N, N-dicyclohexyl-2-benzothiazole sulfonamide;
the anti-aging agent is selected from N, N '-di (beta-naphthyl) p-phenylenediamine or/and N-isopropyl-N' -phenyl p-phenylenediamine.
4. The heat-conducting high-damping vibration damping rubber material as claimed in claim 3, wherein the mass ratio of the zinc oxide to the stearic acid is (2-4): 1.
5. a preparation method for preparing the heat-conducting high-damping vibration damping rubber material as claimed in claims 1-3 comprises the following steps:
(1) placing the natural rubber, the brominated butyl rubber and the epoxidized natural rubber in an internal mixer according to the above parts by mass for internal mixing to prepare a rubber mixture;
(2) adding the heat-conducting filler, the reinforcing agent, the tackifier, the activator, the vulcanizing agent, the accelerator and the anti-aging agent into the internal mixer in the step (1) according to the mass fraction, and continuously carrying out internal mixing to prepare a mixed rubber material;
(3) and (3) putting the mixed rubber sheet material prepared in the step (2) on a flat vulcanizing machine, and vulcanizing to prepare the heat-conducting high-damping vibration damping rubber material.
6. The method for preparing the heat-conducting high-damping vibration-damping rubber material as claimed in claim 5,
in the step (1), the banburying temperature of the banbury mixer is 90-100 ℃, and the banburying time is 10-20 min;
in the step (2), the banburying temperature of the banbury mixer is 90-100 ℃, and the banburying time is 8-10 min;
in the step (3), the vulcanizing temperature is 140-150 ℃, and the vulcanizing time is 20-30 min.
7. The method for preparing the heat-conducting high-damping vibration damping rubber material as claimed in claim 5, wherein the mixed rubber compound prepared in the step (2) is subjected to thin passing and homogenizing by an open mill before vulcanization.
8. The preparation method of the heat-conducting high-damping vibration damping rubber material according to claim 7, wherein the temperature of the open mill is 40-55 ℃, the roller spacing is 0.5-1 mm, and the time for uniform thin-passing milling is 10-20 min.
9. Use of a heat-conducting high-damping vibration-damping rubber material according to claim 1, wherein the heat-conducting high-damping vibration-damping rubber material is used for preparing automobile vibration-damping rubber elements.
10. The use of the heat-conducting high-damping vibration-damping rubber material as claimed in claim 9, wherein the automobile vibration-damping rubber element comprises an engine mount, a limiting block, a plate spring vibration-damping plate, a rubber ball hinge and a rubber bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436275.6A CN114316383A (en) | 2021-11-29 | 2021-11-29 | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436275.6A CN114316383A (en) | 2021-11-29 | 2021-11-29 | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114316383A true CN114316383A (en) | 2022-04-12 |
Family
ID=81046946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111436275.6A Pending CN114316383A (en) | 2021-11-29 | 2021-11-29 | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114316383A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114685867A (en) * | 2022-06-01 | 2022-07-01 | 中北大学 | Controllable cross-linked natural rubber with one-step method for reducing and modifying graphene oxide and preparation method thereof |
| CN115139597A (en) * | 2022-08-05 | 2022-10-04 | 道尔道科技股份有限公司 | High-damping wear-resistant rubber vibration damping pad and preparation process thereof |
| CN115304871A (en) * | 2022-08-22 | 2022-11-08 | 浙江顺豪新材料有限公司 | Rubber material for automobile shock absorption and preparation method thereof |
| CN116925473A (en) * | 2023-07-21 | 2023-10-24 | 饭田（佛山）橡塑有限公司 | Preparation method and application of sound-insulating and shock-absorbing rubber material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660056A (en) * | 2012-05-18 | 2012-09-12 | 中北大学 | Preparation method of novel heat-conducting natural rubber compound material |
| CN110157048A (en) * | 2018-02-07 | 2019-08-23 | 陕西永安减震科技有限公司 | A kind of high thermal conductivity engineering rubber material and preparation method thereof |
| CN111825890A (en) * | 2020-07-21 | 2020-10-27 | 诺博橡胶制品有限公司 | Heat-conducting damping rubber material and preparation method thereof |
-
2021
- 2021-11-29 CN CN202111436275.6A patent/CN114316383A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660056A (en) * | 2012-05-18 | 2012-09-12 | 中北大学 | Preparation method of novel heat-conducting natural rubber compound material |
| CN110157048A (en) * | 2018-02-07 | 2019-08-23 | 陕西永安减震科技有限公司 | A kind of high thermal conductivity engineering rubber material and preparation method thereof |
| CN111825890A (en) * | 2020-07-21 | 2020-10-27 | 诺博橡胶制品有限公司 | Heat-conducting damping rubber material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 庄昌昌等: "功能化还原氧化石墨烯/天然橡胶导热复合材料的性能研究" * |
| 张志: "隔震支座用天然橡胶/溴化丁基橡胶复合材料的设计与制备" * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114685867A (en) * | 2022-06-01 | 2022-07-01 | 中北大学 | Controllable cross-linked natural rubber with one-step method for reducing and modifying graphene oxide and preparation method thereof |
| CN115139597A (en) * | 2022-08-05 | 2022-10-04 | 道尔道科技股份有限公司 | High-damping wear-resistant rubber vibration damping pad and preparation process thereof |
| CN115304871A (en) * | 2022-08-22 | 2022-11-08 | 浙江顺豪新材料有限公司 | Rubber material for automobile shock absorption and preparation method thereof |
| CN115304871B (en) * | 2022-08-22 | 2023-11-17 | 浙江顺豪新材料有限公司 | Rubber material for automobile shock absorption and preparation method thereof |
| CN116925473A (en) * | 2023-07-21 | 2023-10-24 | 饭田（佛山）橡塑有限公司 | Preparation method and application of sound-insulating and shock-absorbing rubber material |
| CN116925473B (en) * | 2023-07-21 | 2024-03-12 | 饭田（佛山）橡塑有限公司 | Preparation method and application of sound-insulating and shock-absorbing rubber material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114316383A (en) | Heat-conducting high-damping vibration-damping rubber material and preparation method and application thereof | |
| WO2012053579A1 (en) | Rubber composition for band topping, rubber composition for breaker edge strip, and pneumatic tire | |
| CN109912857B (en) | Rubber material for vehicles and preparation method and application thereof | |
| CN111718521A (en) | Magnetic-sensitive rubber composition for rubber air spring and preparation method thereof | |
| CN107177057A (en) | It is a kind of to be used to manufacture rubber composition of wrapped V-belt compression layer and preparation method thereof | |
| CN114773642B (en) | Preparation of graphene/natural rubber with simultaneously improved mechanics, heat conductivity and wear resistance | |
| CN103194010B (en) | Damping material based on blending of butyl rubber and natural rubber and preparation method thereof | |
| CN114805954B (en) | Carbon black reinforced tire lower tread rubber material, mixing method and double-layer tread pneumatic tire | |
| CN102134335A (en) | Intermediate supporting cushion rubber of transmission shaft | |
| KR101000811B1 (en) | Rubber composition of tire tread base | |
| CN109021342B (en) | High-performance hydrogenated nitrile-based rubber compound and preparation method thereof | |
| CN112552558A (en) | Cord fabric skim of bias aircraft tire and preparation method thereof | |
| CN110776584B (en) | Damping additive, high-performance rubber material prepared from damping additive and preparation method of high-performance rubber material | |
| CN108659282B (en) | Wide-temperature-range high-damping oil-resistant damping rubber composite material and preparation method thereof | |
| CN114437416B (en) | Vibration damping rubber and preparation method thereof | |
| CN114316401B (en) | Cutting-resistant low-heat-generation mining engineering tire tread rubber and preparation method thereof | |
| CN113929978B (en) | Solid aviation tire lower tread rubber and preparation method thereof | |
| CN114891281A (en) | Simplified method for simultaneously optimizing mechanics, low heat generation and wear resistance of graphene modified natural rubber vulcanized rubber | |
| CN112625371B (en) | Damping sucker composite material and preparation method thereof | |
| CN114621513A (en) | High-damping aging-resistant rubber product and preparation method thereof | |
| CN111218069A (en) | Preparation method of high-damping rubber for track vibration and noise reducer | |
| CN116675909B (en) | Preparation method of solid tire | |
| CN115651324B (en) | Wide-temperature-range high-damping composite rubber material and preparation method thereof | |
| CN111675832A (en) | Composite rubber sound insulation material and preparation method thereof | |
| CN116925473B (en) | Preparation method and application of sound-insulating and shock-absorbing rubber material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |