CN113583354A - High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof - Google Patents
High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof Download PDFInfo
- Publication number
- CN113583354A CN113583354A CN202110950439.0A CN202110950439A CN113583354A CN 113583354 A CN113583354 A CN 113583354A CN 202110950439 A CN202110950439 A CN 202110950439A CN 113583354 A CN113583354 A CN 113583354A
- Authority
- CN
- China
- Prior art keywords
- rubber
- mixing
- parts
- capsule
- bladder
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to the technical field of tire production, in particular to a high-thermal-conductivity tire vulcanized capsule composition and a production method of a capsule thereof. Based on 100 parts by weight of butyl rubber, the coating also comprises 4-6 parts of chloroprene rubber, 22027-33 parts of carbon black, 20-25 parts of superconducting acetylene carbon black, 3-6 parts of carbon nano tubes, 6-10 parts of corn oil, 2-4 parts of dispersing agent Aflux, 5-8 parts of zinc oxide and 7-9 parts of phenolic resin. The process for producing the curing bladder by using the composition comprises rubber material mixing, rubber filtering, curing bladder, secondary curing and polishing products. The rubber material mixing is divided into two sections: a master batch and a final batch. And (3) preparing the final rubber compound into a rectangular rubber strip by a rubber filter and an open mill, preparing a vulcanized capsule by an injection capsule vulcanizing machine, and finally performing secondary vulcanization and polishing to obtain a capsule product. The carbon nano tube added in the formula of the high-thermal-conductivity tire curing bladder remarkably improves the thermal conductivity of the bladder, and simultaneously, the corn oil is added to ensure that the rubber material has better elongation and hardness, and the aging average life of the bladder exceeds 500 times.
Description
Technical Field
The invention relates to the technical field of tire production, in particular to a high-thermal-conductivity tire vulcanized capsule composition and a production method of a capsule thereof.
Background
As is well known, the production of tires requires a number of steps including mixing, extrusion, molding, and vulcanization. During the vulcanization of the tyre, the formed tyre blank is loaded into a vulcanizing machine, a mold is arranged outside the tyre blank, a bladder is arranged inside the tyre blank, supersaturated steam, nitrogen and the like are required to be injected into the vulcanized bladder during the vulcanization, the whole mold is filled with the tyre blank through the expansion pressure of the vulcanized bladder, and the tyre is vulcanized through certain time, temperature and pressure under the combined action of the mold and the bladder.
In the vulcanization process of the tire blank, the outer part of the tire blank is in contact with the steel mold, so that the heat conducting performance is good, and the heat transfer speed is high. The inner part is contacted with the vulcanizing capsule, the vulcanizing capsule belongs to rubber products, and the heat conductivity is poor, so that the vulcanizing time of the tire is shortened, the vulcanizing efficiency is improved, the heat conductivity of the vulcanizing capsule needs to be considered, more heat can be provided for a tire blank in unit time, and the aim of improving the vulcanizing productivity is fulfilled.
The service temperature of the tire curing bladder is 170-210 ℃, the media inside the curing bladder are usually supersaturated steam (or saturated steam), superheated water, high-pressure nitrogen and the like, and the curing bladder needs to bear high temperature and high pressure, repeated flexural tensile deformation and the like in the tire curing process, so that the service conditions are harsh.
Aiming at the above-mentioned use conditions, the design of the tire curing bladder needs to consider the improvement of the thermal conductivity and the aging resistance of the bladder, and simultaneously, the good tensile strength, the elongation at break, the tearing performance and other performances of the curing bladder are ensured.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-thermal-conductivity vulcanized rubber capsule composition for a tire and a production method of the rubber capsule, wherein the vulcanized rubber capsule has good thermal conductivity and high thermal conductivity; meanwhile, the high-thermal-conductivity tire curing bladder has good tensile strength, aging resistance, tearing resistance and other properties, and can be used for ensuring that the high-thermal-conductivity tire curing bladder can be used for a certain number of times.
The technical scheme adopted by the invention for solving the technical problems is as follows: the high-thermal-conductivity tire vulcanized capsule composition is characterized by further comprising, based on 100 parts by weight of butyl rubber, 4-6 parts of chloroprene rubber, 22027-33 parts of carbon black, 20-25 parts of superconducting acetylene carbon black, 3-6 parts of carbon nanotubes, 6-10 parts of corn oil, 2-4 parts of dispersing agent Aflux, 5-8 parts of zinc oxide and 7-9 parts of phenolic resin.
The bulk density of the carbon nano tube is 0.010-0.060g/cm3Specific surface area of 240-300m2The resistivity is 800-1200 mu omega-m, and the aggregate grain diameter is less than or equal to 25 mu m.
The phenolic resin is a mixture of two vulcanized resins SP-1045 and SP-1055, wherein the weight part ratio of SP-1045 to SP-1055 is 2: 1.
A production method for producing a capsule by using the high-thermal-conductivity tire vulcanized capsule composition is characterized in that the whole production process comprises rubber material mixing, rubber filtering, capsule vulcanization and secondary vulcanization, wherein the rubber material mixing comprises two sections: the rubber master batch and the final rubber, (1) mixing the master batch, wherein the mixing of the master batch comprises the following steps: putting butyl rubber, chloroprene rubber and zinc oxide into an internal mixer together, closing a feeding gate, pressing a top bolt, mixing for 45 seconds by the internal mixer, lifting the top bolt, automatically injecting all carbon black N220 and 1/2 superconducting acetylene black into the equipment, lowering the top bolt, mixing for 80 seconds by the internal mixer, lifting the top bolt, opening the feeding gate, adding carbon nano tubes, closing the feeding gate, injecting the rest 1/2 superconducting acetylene black, lowering the top bolt, continuously mixing until the temperature of the rubber material rises to 105-115 ℃, lifting the top bolt, opening the feeding gate, adding a dispersing agent Aflux, closing the feeding gate, injecting corn oil, lowering the top bolt, continuously mixing, allowing the rotor of the internal mixer to rotate at a speed of 30-35 r/min, mixing for 5-7 minutes, opening a discharge gate after the temperature of the rubber material rises to 165-175 ℃, extruding the rubber material by a double-screw extruder to form rubber sheets with a thickness of 8mm and a width of 1000mmm, passing through an isolating agent groove, cooling to room temperature on an air cooling frame to obtain a masterbatch; (2) mixing the final rubber, wherein the mixing of the final rubber comprises the following steps: putting the master batch into an internal mixer, descending a top plug, mixing for 45 seconds, ascending the top plug, opening a feeding door, adding vulcanized resin, closing the feeding door, descending the top plug, continuously mixing until the temperature of the rubber material rises to 80-85 ℃, ascending the top plug and keeping for 10-15 seconds, then descending the top plug, rotating the rotor of the internal mixer at the speed of 30-35 r/min, mixing for 3-5 minutes, continuously mixing until the temperature of the rubber material rises to 105-115 ℃, opening a discharging door, extruding the rubber material by a double-screw extruder to form rubber sheets with the thickness of 8mm and the width of 1000mmm, passing through an isolating agent groove, cooling to room temperature on an air cooling frame, and obtaining a final rubber sheet; (3) and filtering rubber, wherein the rubber filtering machine is a cold feeding pin type extruder, the diameter of a screw is 250mm, and the temperature of each section of the extruder is set as follows: feeding 45-65 ℃ in a feeding section, 55-75 ℃ in a plasticizing section, 65-85 ℃ in an extrusion section, 75-95 ℃ in a machine head section, 15-25 m/min in extrusion speed, and extruding glue at a temperature not exceeding 100 ℃, and finally, passing the final rubber through a rubber filter and then an open mill to prepare a rectangular continuous rubber strip with a section of 70mm x 30 mm; (4) vulcanizing the capsule, namely putting the rubber strip prepared in the step (3) into an injection machine for preheating and plasticizing, wherein the temperature of a screw of the injection machine is 55-65 ℃, weighing the rubber material by a metering device, injecting the rubber material into a mold cavity of a capsule mold according to 1.05-1.07 times of the standard weight of the vulcanized capsule, wherein the pressure of the screw is 16-18 MPa, the injection time is less than or equal to 35 seconds, and the rubber material is subjected to certain time, temperature and pressure in the vulcanization machine to prepare the vulcanized capsule; (5) secondary vulcanization, namely carrying out secondary vulcanization on the vulcanized capsule prepared in the step (4) in a vulcanizing tank at the temperature of 140 ℃ for 4 hours and under the pressure of 1.0 Mpa; (6) and polishing the capsule subjected to secondary vulcanization to obtain a finished product.
The carbon nano tubes added in the masterbatch are sealed and packaged by a polyethylene bag and are fed independently, the melting point of the polyethylene bag is less than or equal to 110 ℃, the tensile strength is more than or equal to 12MPa, and the acetone extract is less than or equal to 1.2%.
The filling coefficient of the internal mixer during master batch mixing is 0.90-0.92, and the filling coefficient of the internal mixer during final mixing is 0.88-0.90.
The upper top plug pressure during the final rubber mixing is 75-80% of the upper top plug pressure during the master batch mixing.
And (4) when the rubber material is filtered in the step (3), a double-layer 40-mesh filter screen is arranged in the rubber filter head.
The capsule vulcanization temperature in the step (4) is 180-190 ℃, the vulcanization time is 45-55 minutes, and the pressure is more than or equal to 16 MPa.
Compared with the common capsule, the heat conductivity coefficient is improved by about 60 percent, and the tire vulcanization time can be saved by about 5 percent; the physical property of the bladder meets the requirement, the service performance is good, and the aging average life of the high-thermal-conductivity tire curing bladder disclosed by the invention is more than 500 times.
Detailed Description
The invention is further described with reference to the following examples:
example 1
The formula of the high-thermal-conductivity tire curing bladder comprises, by weight, 100 parts of butyl rubber, 4 parts of chloroprene rubber, N22027 parts of carbon black, 22 parts of superconducting acetylene black, 6 parts of carbon nano tubes, 10 parts of corn oil, 4 parts of dispersing agent Aflux, 5 parts of zinc oxide and 9 parts of phenolic resin. The production process of the high-thermal-conductivity tire curing bladder generally comprises rubber material mixing, rubber filtering, curing bladder, secondary curing, product polishing and the like. Wherein the rubber mixing comprises two sections: a master batch and a final batch. The whole capsule production process is explained in detail below: (1) and (4) mixing the master batch. The detailed procedure of master batch mixing is as follows: putting butyl rubber, chloroprene rubber and zinc oxide into an internal mixer together, closing a feeding gate, mixing for 45 seconds, lifting a top bolt, automatically injecting all carbon black N220 and 1/2 superconducting acetylene black into the internal mixer, lowering the top bolt, mixing for 80 seconds by the internal mixer, lifting the top bolt, opening the feeding gate, adding carbon nano tubes, closing the feeding gate, injecting the rest 1/2 superconducting acetylene black, lowering the top bolt, continuously mixing until the temperature of the rubber material rises to 105 ℃, lifting the top bolt, opening the feeding gate, adding a dispersing agent Aflux, closing the feeding gate, injecting corn oil, lowering the top bolt, continuously mixing, rotating the rotor of the internal mixer at 35 r/min for 5 minutes, opening a discharging gate after the temperature of the rubber material rises to 165 ℃, discharging the rubber material by extruding the double screw rod from a rubber sheet (the thickness of 8mm x and the width of 1000mmm), passing through an isolating agent groove, cooling to room temperature on an air cooling frame, obtaining the master batch. (2) And (4) final mixing. The detailed procedure of the final rubber mixing is as follows: putting the master batch into an internal mixer, descending a top plug, mixing the rubber material for 45 seconds, ascending the top plug, opening a feeding gate, adding the vulcanized resin, closing the feeding gate, descending the top plug, continuously mixing until the temperature of the rubber material rises to 80 ℃, ascending the top plug, keeping for 15 seconds, descending the top plug, rotating the rotor of the internal mixer at 35 revolutions per minute, mixing for 3 minutes, rising the temperature of the rubber material to 105 ℃, opening a discharging gate, discharging the rubber material, extruding the rubber sheet (the thickness is 8mm and the width is 1000mmm) through a double screw, passing through an isolating agent groove, and cooling to room temperature on an air cooling frame to obtain the final rubber compound. (3) And (5) filtering the glue. The rubber filter is a cold feeding pin type extruder, and the diameter of a screw is 250 mm. The temperatures at different parts of the extruder were set as follows: feeding the rubber into the extruder, wherein the feeding section is 45-65 ℃, the plasticizing section is 55-75 ℃, the extruding section is 65-85 ℃, the head section is 75-95 ℃, the extruding speed is 15 m/min, the temperature of the extruded rubber is not more than 100 ℃, and the final rubber is firstly filtered by a rubber filter and then passes through an open mill to prepare the continuous rubber strip with a rectangular (70mm x 30mm) section. (4) And (4) vulcanizing the capsule. Putting the rubber strip prepared in the step (3) into an injection machine for preheating and plasticizing, wherein the temperature of a screw of the injection machine is 55-65 ℃; weighing the rubber material by a metering device, injecting the rubber material into a mold cavity of a capsule mold according to 1.05 times of the standard weight of the vulcanized capsule, wherein the screw pressure is 18MPa, and the injection time is less than or equal to 35 seconds; the capsule vulcanization temperature is 190 ℃, the vulcanization time is 45 minutes, and the pressure is more than or equal to 16MPa, so that the vulcanized capsule is prepared. (5) And (5) secondary vulcanization. And (4) carrying out secondary vulcanization on the vulcanized capsule prepared in the step (4) at the temperature of 140 ℃ for 4 hours and under the pressure of 1.0 Mpa. (6) And polishing the secondarily vulcanized capsule to obtain a finished product.
The heat conductivity coefficient of the high-heat-conductivity tire curing bladder, the common tire bladder and the high-heat-conductivity bladder of other domestic companies is detected by using a Hot Disk thermal constant analyzer, and the specific results are as follows: the thermal conductivity of the different capsules is given in the following table:
| common capsule | High heat conduction capsule | High heat conduction capsule for certain domestic company | |
| Coefficient of thermal conductivity (W/m X K) | 0.2532 | 0.4054 | 0.4025 |
Compared with the thermal conductivity 0.2532W/m K of the common capsule, the thermal conductivity 0.4054W/m K of the high-thermal-conductivity tire curing capsule disclosed by the invention is improved by about 60%. Compared with the common capsule formula, the high-thermal-conductivity capsule formula disclosed by the invention has the advantages that the types and the dosage of the fillers (carbon black N220, superconducting acetylene carbon black and carbon nano tubes) are more, and the use of the aged capsule can be influenced. Therefore, in order to verify whether the physical properties of the high-thermal-conductivity tire curing bladder disclosed by the invention are stable before and after aging, the rubber material is specially selected for carrying out related performance detection, and the specific results are as follows:
as can be seen from the above table, compared with the common bladder, the high thermal conductivity tire curing bladder disclosed by the invention has stable tensile strength, elongation, permanent deformation and other properties.
Example 2
The formula of the high-thermal-conductivity tire curing bladder comprises, by weight, 100 parts of butyl rubber, 5 parts of chloroprene rubber, 22030 parts of carbon black, 20 parts of superconducting acetylene black, 5 parts of carbon nano tubes, 8 parts of corn oil, 3 parts of dispersing agent Aflux, 6 parts of zinc oxide and 8 parts of phenolic resin. The production process of the high-thermal-conductivity tire curing bladder generally comprises rubber material mixing, rubber filtering, curing bladder, secondary curing, product polishing and the like. Wherein the rubber mixing comprises two sections: a master batch and a final batch. The whole production process is explained in detail as follows: (1) and (4) mixing the master batch. The detailed procedure of master batch mixing is as follows: putting butyl rubber, chloroprene rubber and zinc oxide into an internal mixer together, closing a feeding gate, mixing for 45 seconds, lifting a top bolt, automatically injecting all carbon black N220 and 1/2 superconducting acetylene black into the internal mixer, lowering the top bolt, mixing for 80 seconds by the internal mixer, lifting the top bolt, opening the feeding gate, adding carbon nano tubes, closing the feeding gate, injecting the rest 1/2 superconducting acetylene black, lowering the top bolt, continuously mixing until the temperature of the rubber material rises to 110 ℃, lifting the top bolt, opening the feeding gate, adding a dispersing agent Aflux, closing the feeding gate, injecting corn oil, lowering the top bolt, continuously mixing, rotating the rotor of the internal mixer at a speed of 32 revolutions per minute for 6 minutes, discharging the rubber material after the temperature of the rubber material rises to 170 ℃, opening a discharging gate, discharging the rubber material, extruding the rubber material by a double screw rod (the thickness of 8mm and the width of 1000mmm), passing through an isolating agent groove, cooling to room temperature on an air cooling frame, obtaining the master batch. (2) And (4) final mixing. The detailed procedure of the final rubber mixing is as follows: putting the master batch into an internal mixer, descending a top plug, mixing the rubber material for 45 seconds, ascending the top plug, opening a feeding gate, adding the vulcanized resin, closing the feeding gate, descending the top plug, continuously mixing until the temperature of the rubber material rises to 83 ℃, ascending the top plug, keeping for 12 seconds, descending the top plug, rotating the rotor of the internal mixer at the speed of 32 r/min, mixing for 4 minutes, rising the temperature of the rubber material to 110 ℃, opening a discharging gate, discharging the rubber material, extruding the rubber sheet (the thickness of 8mm is 1000mmm wide) through a double screw rod, passing through an isolating agent groove, and cooling to the room temperature on an air cooling frame to obtain the final rubber compound. (3) And (5) filtering the glue. The rubber filter is a cold feeding pin type extruder, and the diameter of a screw is 250 mm. The temperatures at different parts of the extruder were set as follows: feeding the rubber into the extruder, wherein the feeding section is 45-65 ℃, the plasticizing section is 55-75 ℃, the extruding section is 65-85 ℃, the head section is 75-95 ℃, the extruding speed is 20 m/min, the temperature of the extruded rubber is not more than 100 ℃, and the final rubber is firstly filtered by a rubber filter and then passes through an open mill to prepare the continuous rubber strip with a rectangular (70mm x 30mm) section. (4) And (4) vulcanizing the capsule. Putting the rubber strip prepared in the step (3) into an injection machine for preheating and plasticizing, wherein the temperature of a screw of the injection machine is 55-65 ℃; weighing the rubber material by a metering device, injecting the rubber material into a mold cavity of a capsule mold according to 1.06 times of the standard weight of the vulcanized capsule, wherein the screw pressure is 17MPa, and the injection time is less than or equal to 35 seconds; the capsule vulcanization temperature is 185 ℃, the vulcanization time is 50 minutes, and the pressure is more than or equal to 16MPa, so that the vulcanized capsule is prepared. (5) And (5) secondary vulcanization. And (4) carrying out secondary vulcanization on the vulcanized capsule prepared in the step (4) at the temperature of 140 ℃ for 4 hours and under the pressure of 1.0 Mpa. (6) And polishing the secondarily vulcanized capsule to obtain a finished product.
Example 3
The high-thermal-conductivity capsule comprises, by weight, 100 parts of butyl rubber, 6 parts of chloroprene rubber, N22033 parts of carbon black, 25 parts of superconducting acetylene black, 3 parts of carbon nanotubes, 6 parts of corn oil, 2 parts of a dispersing agent Aflux, 7 parts of zinc oxide and 7 parts of phenolic resin. The production process of the high-thermal-conductivity capsule disclosed by the invention generally comprises mixing of rubber materials, rubber filtering, capsule vulcanization, secondary vulcanization, product polishing and the like. Wherein the rubber mixing comprises two sections: a master batch and a final batch. The whole production process is explained in detail as follows: (1) and (4) mixing the master batch. The detailed procedure of master batch mixing is as follows: the butyl rubber and the chloroprene rubber are mixed, putting zinc oxide into an internal mixer together, closing a feeding gate, mixing for 45 seconds, lifting a top bolt, automatically injecting all carbon black N220 and 1/2 superconducting acetylene black into the internal mixer, lowering the top bolt, mixing for 80 seconds by the internal mixer, lifting the top bolt, opening the feeding gate, adding carbon nano tubes, closing the feeding gate, injecting the rest 1/2 superconducting acetylene black, lowering the top bolt, continuously mixing until the temperature of the rubber material rises to 115 ℃, lifting the top bolt, opening the feeding gate, adding a dispersing agent Aflux, closing the feeding gate, injecting corn oil, lowering the top bolt, continuously mixing, extruding the rotor of the internal mixer at a rotating speed of 30 revolutions per minute for 7 minutes, opening a double-screw rod when the temperature of the rubber material rises to 175 ℃, extruding the rubber material through a rubber sheet (the thickness of 8mm is 1000mmm wide), passing through an isolating agent groove, and cooling to room temperature on an air cooling frame to obtain the rubber. (2) And (4) final mixing. The detailed procedure of the final rubber mixing is as follows: putting the master batch into an internal mixer, descending a top plug, mixing the rubber material for 45 seconds, ascending the top plug, opening a feeding gate, adding vulcanized resin, closing the feeding gate, descending the top plug, continuously mixing until the temperature of the rubber material rises to 85 ℃, ascending the top plug, keeping for 10 seconds, descending the top plug, rotating the rotor of the internal mixer at the speed of 30 r/min, mixing for 5 minutes, rising the temperature of the rubber material to 115 ℃, opening a discharging gate, extruding the rubber material through a double-screw extruder sheet (the thickness is 8mm and the width is 1000mmm), passing through an isolating agent groove, and cooling to room temperature on an air cooling frame to obtain the final rubber compound. (3) And (5) filtering the glue. The rubber filter is a cold feeding pin type extruder, and the diameter of a screw is 250 mm. The temperatures at different parts of the extruder were set as follows: feeding the rubber into the extruder, wherein the feeding section is 45-65 ℃, the plasticizing section is 55-75 ℃, the extruding section is 65-85 ℃, the head section is 75-95 ℃, the extruding speed is 18 m/min, the temperature of the extruded rubber is not more than 100 ℃, and the final rubber is firstly filtered by a rubber filter and then passes through an open mill to prepare the continuous rubber strip with a rectangular (70mm x 30mm) section. (4) And (4) vulcanizing the capsule. Putting the rubber strip prepared in the step (3) into an injection machine for preheating and plasticizing, wherein the temperature of a screw of the injection machine is 55-65 ℃; weighing the rubber material by a metering device, injecting the rubber material into a mold cavity of a capsule mold according to 1.07 times of the standard weight of the vulcanized capsule, wherein the screw pressure is 18MPa, and the injection time is less than or equal to 35 seconds; the capsule vulcanization temperature is 180 ℃, the vulcanization time is 55 minutes, and the pressure is more than or equal to 16MPa, so that the vulcanized capsule is prepared. (5) And (5) secondary vulcanization. And (4) carrying out secondary vulcanization on the vulcanized capsule prepared in the step (4) at the temperature of 140 ℃ for 4 hours and under the pressure of 1.0 Mpa. (6) And polishing the secondarily vulcanized capsule to obtain a finished product.
Claims (9)
1. The high-thermal-conductivity tire vulcanized capsule composition is characterized by further comprising, based on 100 parts by weight of butyl rubber, 4-6 parts of chloroprene rubber, 22027-33 parts of carbon black, 20-25 parts of superconducting acetylene carbon black, 3-6 parts of carbon nanotubes, 6-10 parts of corn oil, 2-4 parts of dispersing agent Aflux, 5-8 parts of zinc oxide and 7-9 parts of phenolic resin.
2. The highly thermally conductive tire curing bladder composition of claim 1, wherein said carbon nanotubes have a bulk density of 0.010 to 0.060g/cm3Specific surface area of 240-300m2The resistivity is 800-1200 mu omega-m, and the aggregate grain diameter is less than or equal to 25 mu m.
3. The highly thermally conductive tire curing bladder composition of claim 1, wherein said phenolic resin is a mixture of two curing resins SP-1045 and SP-1055, wherein the weight ratio of SP-1045 to SP-1055 is 2: 1.
4. A production method for producing a bladder by using the high thermal conductivity tire curing bladder composition of any one of claims 1 to 3, wherein the whole production process comprises mixing of rubber materials, rubber filtering, curing of the bladder and secondary curing, wherein the mixing of the rubber materials comprises two stages: the rubber master batch and the final rubber, (1) mixing the master batch, wherein the mixing of the master batch comprises the following steps: putting butyl rubber, chloroprene rubber and zinc oxide into an internal mixer together, closing a feeding gate, pressing a top bolt, mixing for 45 seconds by the internal mixer, lifting the top bolt, automatically injecting all carbon black N220 and 1/2 superconducting acetylene black into the equipment, lowering the top bolt, mixing for 80 seconds by the internal mixer, lifting the top bolt, opening the feeding gate, adding carbon nano tubes, closing the feeding gate, injecting the rest 1/2 superconducting acetylene black, lowering the top bolt, continuously mixing until the temperature of the rubber material rises to 105-115 ℃, lifting the top bolt, opening the feeding gate, adding a dispersing agent Aflux, closing the feeding gate, injecting corn oil, lowering the top bolt, continuously mixing, allowing the rotor of the internal mixer to rotate at a speed of 30-35 r/min, mixing for 5-7 minutes, opening a discharge gate after the temperature of the rubber material rises to 165-175 ℃, extruding the rubber material by a double-screw extruder to form rubber sheets with a thickness of 8mm and a width of 1000mmm, passing through an isolating agent groove, cooling to room temperature on an air cooling frame to obtain a masterbatch; (2) mixing the final rubber, wherein the mixing of the final rubber comprises the following steps: putting the master batch into an internal mixer, descending a top plug, mixing for 45 seconds, ascending the top plug, opening a feeding door, adding vulcanized resin, closing the feeding door, descending the top plug, continuously mixing until the temperature of the rubber material rises to 80-85 ℃, ascending the top plug and keeping for 10-15 seconds, then descending the top plug, rotating the rotor of the internal mixer at the speed of 30-35 r/min, mixing for 3-5 minutes, continuously mixing until the temperature of the rubber material rises to 105-115 ℃, opening a discharging door, extruding the rubber material by a double-screw extruder to form rubber sheets with the thickness of 8mm and the width of 1000mmm, passing through an isolating agent groove, cooling to room temperature on an air cooling frame, and obtaining a final rubber sheet; (3) and filtering rubber, wherein the rubber filtering machine is a cold feeding pin type extruder, the diameter of a screw is 250mm, and the temperature of each section of the extruder is set as follows: feeding 45-65 ℃ in a feeding section, 55-75 ℃ in a plasticizing section, 65-85 ℃ in an extrusion section, 75-95 ℃ in a machine head section, 15-25 m/min in extrusion speed, and extruding glue at a temperature not exceeding 100 ℃, and finally, passing the final rubber through a rubber filter and then an open mill to prepare a rectangular continuous rubber strip with a section of 70mm x 30 mm; (4) vulcanizing the capsule, namely putting the rubber strip prepared in the step (3) into an injection machine for preheating and plasticizing, wherein the temperature of a screw of the injection machine is 55-65 ℃, weighing the rubber material by a metering device, injecting the rubber material into a mold cavity of a capsule mold according to 1.05-1.07 times of the standard weight of the vulcanized capsule, wherein the pressure of the screw is 16-18 MPa, the injection time is less than or equal to 35 seconds, and the rubber material is subjected to certain time, temperature and pressure in the vulcanization machine to prepare the vulcanized capsule; (5) secondary vulcanization, namely carrying out secondary vulcanization on the vulcanized capsule prepared in the step (4) in a vulcanizing tank at the temperature of 140 ℃ for 4 hours and under the pressure of 1.0 Mpa; (6) and polishing the capsule subjected to secondary vulcanization to obtain a finished product.
5. The method for producing the bladder from the high thermal conductivity tire curing bladder composition according to claim 4, wherein the carbon nanotubes added to the masterbatch are hermetically packaged by a polyethylene bag and fed separately, the melting point of the polyethylene bag is less than or equal to 110 ℃, the tensile strength of the polyethylene bag is greater than or equal to 12MPa, and the acetone extract is less than or equal to 1.2%.
6. The method for producing a bladder from the highly thermally conductive tire curing bladder composition as claimed in claim 4, wherein the filling factor of the internal mixer during mixing of the masterbatch is 0.90 to 0.92, and the filling factor of the internal mixer during mixing of the final batch is 0.88 to 0.90.
7. The method for producing a bladder from a highly thermally conductive tire curing bladder composition as claimed in claim 4, wherein the upper pin pressure during the final rubber mixing is 75% to 80% of the upper pin pressure during the masterbatch mixing.
8. The method for producing the bladder from the high thermal conductivity tire curing bladder composition according to claim 4, wherein the rubber material is filtered in the step (3), and a double-layer 40-mesh filter screen is arranged in the rubber filter head.
9. The production method of the high thermal conductivity tire curing bladder composition for producing the bladder according to claim 4, wherein the curing temperature of the bladder in the step (4) is 180-190 ℃, the curing time is 45-55 minutes, and the pressure is not less than 16 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950439.0A CN113583354A (en) | 2021-08-18 | 2021-08-18 | High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950439.0A CN113583354A (en) | 2021-08-18 | 2021-08-18 | High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113583354A true CN113583354A (en) | 2021-11-02 |
Family
ID=78238543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110950439.0A Pending CN113583354A (en) | 2021-08-18 | 2021-08-18 | High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113583354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563671A (en) * | 2021-07-23 | 2021-10-29 | 威海市润通橡胶有限公司 | Tire curing bladder and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819826A (en) * | 2014-02-17 | 2014-05-28 | 浙江华和塑胶科技有限公司 | High heat conductive tire sulfurization capsule |
| CN105968593A (en) * | 2016-05-30 | 2016-09-28 | 德州玲珑轮胎有限公司 | Tire vulcanization bladder and production method thereof |
| CN108162226A (en) * | 2017-12-25 | 2018-06-15 | 山东西水永橡胶有限公司 | A kind of preparation method of high heat conduction type tire curing bladder |
| CN110240761A (en) * | 2018-03-08 | 2019-09-17 | 中国石油化工股份有限公司 | A kind of rubber composition and its application and a kind of curing bag and preparation method thereof |
| CN112519286A (en) * | 2020-11-16 | 2021-03-19 | 三角轮胎股份有限公司 | Composition for tire curing bladder and tire curing bladder |
-
2021
- 2021-08-18 CN CN202110950439.0A patent/CN113583354A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819826A (en) * | 2014-02-17 | 2014-05-28 | 浙江华和塑胶科技有限公司 | High heat conductive tire sulfurization capsule |
| CN105968593A (en) * | 2016-05-30 | 2016-09-28 | 德州玲珑轮胎有限公司 | Tire vulcanization bladder and production method thereof |
| CN108162226A (en) * | 2017-12-25 | 2018-06-15 | 山东西水永橡胶有限公司 | A kind of preparation method of high heat conduction type tire curing bladder |
| CN110240761A (en) * | 2018-03-08 | 2019-09-17 | 中国石油化工股份有限公司 | A kind of rubber composition and its application and a kind of curing bag and preparation method thereof |
| CN112519286A (en) * | 2020-11-16 | 2021-03-19 | 三角轮胎股份有限公司 | Composition for tire curing bladder and tire curing bladder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563671A (en) * | 2021-07-23 | 2021-10-29 | 威海市润通橡胶有限公司 | Tire curing bladder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101284912B (en) | Brombutyl curing capsule and production method thereof | |
| CN104017280B (en) | The production technique of ageing-resistant tyre capsule sizing material | |
| CN111944214B (en) | Aircraft tire tread rubber and preparation method and application thereof | |
| CN101418087A (en) | Airtight rubber of all-steel radial tyre and preparation method thereof | |
| CN110698776A (en) | Preparation method of high-strength tire curing bladder | |
| CN110330750B (en) | Low-compression permanent deformation carboxylic acid type acrylate rubber and preparation method thereof | |
| CN109735013A (en) | A kind of formula and preparation method thereof of tire curing bladder sizing material | |
| CN113583354A (en) | High-thermal-conductivity vulcanized tire capsule composition and production method of capsule thereof | |
| CN102617898B (en) | Tire tread material and tire rubber prepared by utilizing material | |
| CN111925564B (en) | Rubber material for rubber water seal and preparation forming method and equipment thereof | |
| CN101885866A (en) | Inner glue and rubber mixed material for high-performance steel wire-wound hydraulic rubber tubes and preparation method thereof | |
| CN113637244A (en) | High-temperature-resistant nitrile rubber, application thereof, traceless segmented vulcanization method of sealing rubber product and main driving sealing ring | |
| CN111944213A (en) | Semi-steel radial tire crown strip rubber material suitable for extrusion method and preparation process thereof | |
| CN102786746A (en) | Tire vulcanizing capsule | |
| CN113667195B (en) | High-wear-resistance tire tread rubber and preparation method thereof | |
| CN109503913B (en) | Inflation-free micro-foaming manpower vehicle tire raw material, inflation-free micro-foaming manpower vehicle tire and preparation method thereof | |
| CN111718555A (en) | Sealing strip material based on partially hydrogenated polystyrene-b-conjugated diene/divinylbenzene random copolymer and preparation thereof | |
| CN113512238A (en) | Aircraft tire bead reinforcing rubber and preparation method and application thereof | |
| CN113429689A (en) | Ultra-high heat conduction tire vulcanization capsule rubber composition and process for producing capsule | |
| CN113736150A (en) | High-performance tread rubber composite material and preparation method and application thereof | |
| CN111471223A (en) | Continuous extrusion type rubber water stop for tunnel and preparation method | |
| CN114685997A (en) | High-hardness low-compression deformation rubber nano composite material and preparation method thereof | |
| CN111187479A (en) | Acrylate rubber encapsulating sleeve and preparation method thereof | |
| CN109422943B (en) | Raw material for inflation-free manpower vehicle tire, inflation-free manpower vehicle tire and preparation method thereof | |
| CN112521672A (en) | Colored material suitable for SBR thick product and preparation method thereof |
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 |