CN111944245A - Production method for solving problem of extrusion of pitted surface of tire inner liner - Google Patents
Production method for solving problem of extrusion of pitted surface of tire inner liner Download PDFInfo
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- CN111944245A CN111944245A CN202010857350.5A CN202010857350A CN111944245A CN 111944245 A CN111944245 A CN 111944245A CN 202010857350 A CN202010857350 A CN 202010857350A CN 111944245 A CN111944245 A CN 111944245A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2323/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2407/00—Characterised by the use of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2423/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08J2423/22—Copolymers of isobutene; butyl rubber
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- 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
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- 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
- C08K3/02—Elements
- C08K3/04—Carbon
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- 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
- C08K3/02—Elements
- C08K3/06—Sulfur
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Abstract
The invention discloses a production method for solving the problem of the extrusion of pitted surface of rubber material of a tire inner liner. The production method for solving the problem of the rough surface extrusion of the rubber material of the tire inner liner determines the optimal adding sequence during the mixing of medicines, and the anti-aging agent is added in the final rubber mixing production process to effectively prolong the scorching time of the rubber material of the inner liner, reduce the risk of early vulcanization of the rubber material in the production of the later process, thoroughly solve the problems of rough surface and rough surface of the half part in the production of the later process, ensure the production quality of the half part, effectively prolong the quality guarantee period of the rubber material of the tire inner liner of the snowfield, and have good application value.
Description
Technical Field
The invention belongs to the field of rubber material banburying processing, and particularly relates to a production method for solving the problem of surface pitting caused by extrusion of a tire inner liner.
Background
In the general formula of the air-tight layer, the main raw rubber is mainly butyl rubber with good air tightness, and the related performance of halogenated butyl rubber is more excellent. In the rubber formulation, the processing aids other than the vulcanization system are usually added during the mixing of the masterbatch, and only the vulcanization system is added during the production of the final rubber compound.
In the production process of the formula of the air-tight layer, an anti-aging agent and an activating agent are added together with butyl rubber, the defect is that the butyl bromide rubber has different degrees of crosslinking, and scorching is crosslinked essentially, so that rubber compound is subjectively early vulcanized and scorching is low. In the production of the half part in the next process, the phenomenon of rough surface is actually shown and called as pitted surface, the phenomenon directly causes that the half part cannot be normally used, return glue is generated, and the phenomenon directly causes the production stop of the next process when the pitted surface is serious.
Accordingly, further developments and improvements are still needed in the art.
Disclosure of Invention
Aiming at various defects in the prior art, a production method for solving the problem of the extrusion of the pitted surface of the rubber material of the tire airtight layer is provided, and the technical problems of rough surface and pitted surface of the half part produced in the process after the rubber material of the tire airtight layer is sealed are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a production method for solving the problem of the extrusion of pitted surface of rubber material of an inner liner layer of a tire is characterized in that an active agent and butyl rubber are added in the production process of master batch, and an anti-aging agent is added in the production process of final batch.
Further, the production method for solving the problem of the extrusion of the pitted surface of the rubber material of the tire inner liner comprises the following specific processes:
s1, master batch production process: adding 20# standard rubber, butyl bromide rubber, butyl reclaimed rubber, N660 carbon black, an active agent, C9 petroleum resin, alkylphenol formaldehyde resin and operating oil into an internal mixer for mixing rubber to obtain a section of master batch; adding the first-stage masterbatch into an internal mixer for mixing to obtain second-stage masterbatch;
s2, final rubber mixing production process: adding the secondary masterbatch, the anti-aging agent, the granulation masterbatch medicine and the accelerator into an internal mixer for mixing rubber to obtain final mixed rubber.
Further, in the final rubber compound, by mass fraction, the content of the active agent is 0.5% -1.7%, the content of the butyl rubber is 34.5% -34.8%, and the content of the anti-aging agent is 0.5% -1.2%.
Preferably, in step S1, by weight, 10-15 parts of 20# standard rubber, 25-40 parts of butyl bromide rubber, 10-20 parts of butyl reclaimed rubber, 50-60 parts of N660 carbon black, 0.5-3 parts of an activator, 0.5-1.5 parts of C9 petroleum resin, 0.5-2.5 parts of alkylphenol formaldehyde resin and 10-20 parts of operating oil; in step S2, 0.5-2 parts of anti-aging agent, 4-6 parts of granulation masterbatch medicine and 0.5-2 parts of accelerator.
Further, in step S1, the rubber mixing process of the primary masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the mixing is carried out for 150-.
Further, in step S1, the rubber mixing process of the second-stage masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the mixing is carried out for 120-year and 125-year, the rubber is discharged at 135 ℃, the rubber is extruded by the extruder and milled by the open mill, and then the rubber is discharged, and the rubber is cooled by the isolating agent groove and the cooling rack to obtain the second-stage masterbatch.
Further, in step S2, the final rubber mixing process includes controlling the temperature of the rotor, the mixing chamber and the discharge door at 25 ℃, controlling the pressure at 60bar, mixing for 110-.
Further, the granulation masterbatch medicine is a mixture of zinc oxide-80 masterbatch particles and sulfur pre-dispersion medicine glue, and the weight parts of the zinc oxide-80 masterbatch particles and the sulfur pre-dispersion medicine glue S-80 are 3-5 parts and 1-2 parts respectively.
Advantageous effects
The invention provides a production method for solving the problem of extrusion of rough surfaces of tire airtight rubber materials, and determines the optimal adding sequence when mixing medicines, the production method can effectively prolong the scorching time of the rubber materials of the airtight layer, reduce the risk of early vulcanization of the rubber materials in the production of the later process, thoroughly solve the problems of rough surface and rough surfaces of the half parts in the production of the later process, ensure the production quality of the half parts, and simultaneously effectively prolong the quality guarantee period of the rubber materials of the airtight layer of the snowfield tire.
Drawings
FIG. 1 is a graph of Mooney viscosity as a function of standing time for compounds obtained in example 1 of the present invention and comparative example 1.
FIG. 2 is a graph of scorch versus parking time for compounds obtained in example 1 of the present invention and comparative example 1.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description is given for clear and complete description of the technical solution of the present invention with reference to the embodiments of the present invention, and other similar embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
A production method for solving the problem of the extrusion of pitted surface of rubber material of an inner liner layer of a tire is characterized in that an active agent and butyl rubber are added in the production process of master batch, and an anti-aging agent is added in the production process of final batch.
Further, the production method for solving the problem of the extrusion of the pitted surface of the rubber material of the tire inner liner comprises the following specific processes:
s1, master batch production process: adding 20# standard rubber, butyl bromide rubber, butyl reclaimed rubber, N660 carbon black, an active agent, C9 petroleum resin, alkylphenol formaldehyde resin and operating oil into an internal mixer for mixing rubber to obtain a section of master batch; adding the first-stage masterbatch into an internal mixer for mixing to obtain second-stage masterbatch;
s2, final rubber mixing production process: adding the secondary masterbatch, the anti-aging agent, the granulation masterbatch medicine and the accelerator into an internal mixer for mixing rubber to obtain final mixed rubber.
Further, in the final rubber compound, by mass fraction, the content of the active agent is 0.5% -1.7%, the content of the butyl rubber is 34.5% -34.8%, and the content of the anti-aging agent is 0.5% -1.2%.
Preferably, in step S1, by weight, 10-15 parts of 20# standard rubber, 25-40 parts of butyl bromide rubber, 10-20 parts of butyl reclaimed rubber, 50-60 parts of N660 carbon black, 0.5-3 parts of an activator, 0.5-1.5 parts of C9 petroleum resin, 0.5-2.5 parts of alkylphenol formaldehyde resin and 10-20 parts of operating oil; in step S2, 0.5-2 parts of anti-aging agent, 4-6 parts of granulation masterbatch medicine and 0.5-2 parts of accelerator.
Further, in step S1, the rubber mixing process of the primary masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the mixing is carried out for 150-.
Further, in step S1, the rubber mixing process of the second-stage masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the mixing is carried out for 120-year and 125-year, the rubber is discharged at 135 ℃, the rubber is extruded by the extruder and milled by the open mill, and then the rubber is discharged, and the rubber is cooled by the isolating agent groove and the cooling rack to obtain the second-stage masterbatch.
Further, in step S2, the final rubber mixing process includes controlling the temperature of the rotor, the mixing chamber and the discharge door at 25 ℃, controlling the pressure at 60bar, mixing for 110-.
Further, the granulation masterbatch medicine is a mixture of zinc oxide-80 masterbatch particles and sulfur pre-dispersion medicine glue, and the weight parts of the zinc oxide-80 masterbatch particles and the sulfur pre-dispersion medicine glue S-80 are 3-5 parts and 1-2 parts respectively.
The starting materials used in the following examples are all commercially available. And (3) internal mixing line equipment configuration: internal mixer, extruder, 2 open mill.
Example 1
The embodiment provides a production method for solving the problem of the extrusion of pitted surface of rubber material of an inner liner of a tire, which comprises the steps of adding an active agent and butyl rubber in the production process of master batch, and adding an anti-aging agent in the production process of final batch.
Further, the production method for solving the problem of the extrusion of the pitted surface of the rubber material of the tire inner liner comprises the following specific processes:
s1, master batch production process: adding 20# standard rubber, butyl bromide rubber, butyl reclaimed rubber, N660 carbon black, an active agent, C9 petroleum resin, alkylphenol formaldehyde resin and operating oil into an internal mixer for mixing rubber to obtain a section of master batch; adding the first-stage masterbatch into an internal mixer for mixing to obtain second-stage masterbatch;
s2, final rubber mixing production process: adding the secondary masterbatch, the anti-aging agent, the granulation masterbatch medicine and the accelerator into an internal mixer for mixing to obtain final mixed rubber A1.
Further, in the final rubber compound, the content of the active agent is 0.5%, the content of the butyl rubber is 34.5%, and the content of the anti-aging agent is 0.5% by mass fraction.
Further, in step S1, in parts by weight, 10 parts of 20# standard rubber, 25 parts of butyl bromide, 10 parts of butyl reclaimed rubber, 50 parts of N660 carbon black, 0.5 part of an activator, 0.5 part of C9 petroleum resin, 0.5 part of alkylphenol-formaldehyde resin, and 10 parts of process oil; in step S2, 0.5 part of an antioxidant, 4 parts of a granulation masterbatch medicine, and 0.5 part of an accelerator.
Specifically, the granulation masterbatch medicine is a mixture of zinc oxide-80 masterbatch particles and sulfur pre-dispersion medicine glue S-80, and the weight parts of the zinc oxide-80 masterbatch particles and the sulfur pre-dispersion medicine glue S-80 are 3-5 parts and 1-2 parts respectively. The zinc oxide-80 master batch particles are indirect zinc oxide which is suitable for rubber industry and is subjected to pre-dispersion treatment, the operation can be more ideal by using the zinc oxide-80 master batch particles, and the zinc oxide-80 master batch particles can not agglomerate under common storage conditions, have good fluidity and do not generate dust. The hydroscopic property of zinc oxide is greatly reduced because it uses high polymer as dispersing system, so that the zinc oxide-80 mother colloidal particle can be more effectively and quickly dispersed in the rubber material, and the energy consumption in the mixing process can be reduced, and compared with the rubber material using powdered zinc oxide, the basic rubber material using zinc oxide-80 mother colloidal particle has smooth surface, at the same time the elongation at break of the rubber material can be improved, and its modulus and tensile strength can be slightly raised, and it also is favourable for raising air tightness of tyre inner liner layer. The sulfur pre-dispersed rubber S-80 is the most important vulcanizing agent in the rubber industry, is a rubber master batch prepared by pre-dispersing 80 percent of sulfur and 20 percent of high polymer (ethylene propylene diene monomer, acrylic rubber and the like), has the advantages of better dispersibility, shorter mixing time, better compatibility with rubber materials and the like.
Preferably, the active agent is stearic acid.
Further, in step S1, the rubber mixing process of the primary masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the rotation speed is 50/50/37/37rmp, the time is kept at 10/20/25/20S, the top plug is pressed for four times in total, the mixing time is 150-plus-material 165S, the rubber is discharged at 135 ℃ plus-material, the rubber is extruded by an extruder and is discharged after being milled by an open mill, and the rubber is cooled by an isolating agent groove and a cooling frame, stacked for later use, so as to obtain the primary masterbatch.
Further, in step S1, the rubber mixing process of the secondary masterbatch is specifically that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 35 ℃, the pressure is 60bar, the rotation speed is 40/40/37rmp, the time is kept at 30/30/20S, the top bolt is pressed for three times for keeping, the mixing is carried out for 120 plus materials for 130S, the rubber is discharged at 135 ℃, the rubber is extruded by an extruder and mixed by an open mill, then the rubber is discharged, and the rubber is cooled by an isolating agent groove and a cooling frame, stacked for standby, so as to obtain the secondary masterbatch.
Further, in step S2, the final rubber mixing process includes controlling the temperature of the rotor, the mixing chamber and the discharge door at 25 ℃, controlling the pressure at 60bar, controlling the rotation speed at 28rmp, maintaining the time at 30/30/25S, pressing the top bolt for three times, mixing for 110-115S, discharging rubber at 95-100 ℃, discharging the rubber after mixing in an open mill, discharging the rubber, passing through an isolating agent tank, cooling the rubber by a cooling rack, stacking the rubber for later use, and obtaining the final rubber a 1.
The quality guarantee period of the obtained final rubber compound can be effectively prolonged to 7 days through the formula and the production method of the air-tight layer, the problems of rough surface and pitted surface of the half part can be completely solved when the rubber compound is used in the next process, the unqualified rubber compound generated by the pitted surface problem is eliminated, and the stability of the product quality is ensured; in addition, the butyl reclaimed rubber is used in the formula, so that the air tightness is met, and the butyl rubber is recycled.
Comparative example 1
Prepared according to the components in the weight portion in the example 1; the configuration of the banburying line equipment in the embodiment 1 is adopted; the inner liner rubber material is produced according to the following steps:
the method comprises the following steps: weighing 20# standard rubber, butyl bromide rubber, butyl reclaimed rubber, N660 carbon black, stearic acid, C9 petroleum resin, alkylphenol formaldehyde resin and an anti-aging agent RD according to a formula, directly putting into an internal mixer at the same time, pressing a top bolt for the first time, and adding operation oil after lifting; controlling the temperature of the rotor, the mixing chamber and the discharge door to 35 ℃, keeping the pressure at 60bar and the rotating speed at 50/50/37/37rmp for 10/20/25/20s, pressing a top bolt for keeping for four times in total, mixing for about 150-165s and 125-135 ℃ to discharge rubber, extruding by an extruder, discharging by an open mill, discharging, passing through an isolating agent groove, cooling by a cooling frame, stacking for later use, and obtaining a section of master batch at the moment.
Step two: directly putting the primary masterbatch into an internal mixer, controlling the temperature of a rotor, a mixing chamber and a discharge door to 35 ℃, controlling the pressure to 60bar, controlling the rotating speed to 40/40/37rmp, keeping the time to 30/30/20s, pressing a top bolt for three times to keep, mixing for 120 plus materials for 130s, discharging the secondary masterbatch at the temperature of 125 plus materials for 135 ℃, extruding the secondary masterbatch by an extruder, mixing by an open mill, discharging the secondary masterbatch, passing through an isolating agent groove, cooling by a cooling frame, stacking for later use, and obtaining the secondary masterbatch at the moment.
Step three: putting the second-stage masterbatch, sulfur masterbatch particles, an accelerant DM and zinc oxide masterbatch particles into an internal mixer, controlling the temperature of a rotor, a mixing chamber and a discharge door to be 25 ℃, controlling the pressure to be 60bar, controlling the rotating speed to be 28rmp, keeping the time to be 30/30/25s, pressing a top bolt for three times, mixing for 110-115s, discharging rubber at the temperature of 95-100 ℃, discharging the rubber after mixing in an open mill, discharging the rubber, passing through an isolating agent groove, cooling by a cooling frame, and stacking for later use, thus obtaining the final rubber B1.
The data obtained in example 1 and comparative example 1 were tested and the results are as follows:
TABLE 1 quick test data for final batches obtained in example 1 and comparative example 1
TABLE 2 physical Properties of the final batches obtained in the examples and comparative example 1
Table 1 shows the quick test data of final batch A1 obtained in example 1 and final batch B1 obtained in comparative example 1; table 2 shows the physical property data of the final rubber A1 obtained in example 1 and the final rubber B1 obtained in comparative example 1.
According to the comparison of the data in the table 1, the safety of the final rubber in the processing process can be effectively guaranteed, the early crosslinking of the final rubber can be prevented, the problems of rough surface and pitted surface of the extruded half part in the actual production can be subjectively solved, and the product quality can be guaranteed when the rubber is produced according to the embodiment in the example 1. The scorch time of the final batches produced in the example 1 embodiment is significantly longer than that of the comparative example 1.
According to the comparison of the data in the table 2, the physical property data of the final rubber compound is not obviously influenced after the adding sequence of the anti-aging agent is adjusted, and the production method described in the example 1 ensures the stability of the quality of the final rubber compound while solving the pitted surface problem.
As can be seen from FIG. 1, in example 1, the sequence of addition of the antioxidant was adjusted to that of the final rubber, and the Mooney viscosity of the final rubber A1 obtained was not significantly changed with the lapse of the standing time, compared to the Mooney viscosity of the final rubber B1 obtained in comparative example 1, indicating that the viscosity of the final rubber A1 obtained by the embodiment of example 1 was more stable and the shelf life of the final rubber was prolonged.
FIG. 2 is a graph showing the scorch time T5 on the ordinate, which corresponds to the time from the start of the test to the time at which the final viscosity of the rubber composition shifts to the lowest point and then to 5 Mooney viscosity values. As can be seen from FIG. 2, after the addition sequence of the antioxidant in example 1 was adjusted to the final rubber addition, the scorch time of the final rubber A1 obtained was significantly prolonged compared to the final rubber B2 obtained in comparative example 1, and there was no significant change with the extension of the standing time, indicating that the final rubber A1 obtained by the embodiment of example 1 was safer in processability, avoiding the problem of premature vulcanization.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (8)
1. A production method for solving the problem of the extrusion of the pitted surface of the rubber material of the tire inner liner is characterized in that an active agent and butyl rubber are added in the production process of master batch, and an anti-aging agent is added in the production process of final batch.
2. The production method for solving the problem of extrusion of the pitted surface of the tire inner liner rubber material according to claim 1, wherein the production method for solving the problem of extrusion of the pitted surface of the tire inner liner rubber material comprises the following specific processes:
s1, master batch production process: adding 20# standard rubber, butyl bromide rubber, butyl reclaimed rubber, N660 carbon black, an active agent, C9 petroleum resin, alkylphenol formaldehyde resin and operating oil into an internal mixer for mixing rubber to obtain a section of master batch; adding the first-stage masterbatch into an internal mixer for mixing to obtain second-stage masterbatch;
s2, final rubber mixing production process: adding the secondary masterbatch, the anti-aging agent, the granulation masterbatch medicine and the accelerator into an internal mixer for mixing rubber to obtain final mixed rubber.
3. The production method for solving the problem of extrusion pitted surface of rubber material of the tire inner liner layer as claimed in claim 2, wherein in the final rubber compound, the content of the active agent is 0.5-1.7% by mass fraction, the content of the butyl rubber is 34.5-34.8% by mass fraction, and the content of the anti-aging agent is 0.5-1.2% by mass fraction.
4. The production method for solving the problem of extrusion pitted surface of the rubber compound of the tire inner liner according to claim 3, wherein in step S1, the rubber compound 20# comprises 10-15 parts by weight of standard rubber, 25-40 parts by weight of butyl bromide rubber, 10-20 parts by weight of butyl reclaimed rubber, 50-60 parts by weight of N660 carbon black, 0.5-3 parts by weight of an activator, 0.5-1.5 parts by weight of C9 petroleum resin, 0.5-2.5 parts by weight of alkylphenol formaldehyde resin and 10-20 parts by weight of process oil; in step S2, 0.5-2 parts of anti-aging agent, 4-6 parts of granulation masterbatch medicine and 0.5-2 parts of accelerator.
5. The method as claimed in claim 2, wherein in step S1, the rubber mixing process of the first section of the masterbatch is carried out by controlling the temperature of the rotor, the mixing chamber and the discharge door at 35 ℃, controlling the pressure at 60bar, mixing for 150-.
6. The method as claimed in claim 2, wherein in step S1, the rubber mixing process of the second-stage masterbatch comprises controlling the temperature of the rotor, the mixing chamber and the discharge door at 35 ℃, controlling the pressure at 60bar, mixing for 120-fold rubber charge for 130S, and discharging at 135 ℃, extruding the rubber through the extruder, milling through the open mill, discharging the rubber, passing through the isolating agent tank, and cooling the rubber through the cooling rack to obtain the second-stage masterbatch.
7. The production method for solving the problem of the extrusion pitted surface of the rubber material of the tire inner liner as claimed in claim 2, wherein in the step S2, the rubber mixing process of the final rubber mixing is that the temperature of the rotor, the mixing chamber and the discharge door is controlled at 25 ℃, the pressure is 60bar, the mixing is carried out for 110 and 115 seconds, the rubber is discharged at 95-100 ℃, the sheet is discharged after the mixing by the open mill, and the final rubber mixing is obtained after the sheet passes through the isolating agent groove and the cooling frame for cooling.
8. The production method for solving the problem of extrusion pitted surface of the rubber material of the tire inner liner according to claim 4, wherein the granulating masterbatch is a mixture of zinc oxide-80 masterbatch particles and sulfur pre-dispersion rubber S-80, and the weight parts of the zinc oxide-80 masterbatch particles and the sulfur pre-dispersion rubber S-80 are 3-5 parts and 1-2 parts respectively.
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| CN202010857350.5A CN111944245B (en) | 2020-08-24 | 2020-08-24 | Production method for solving problem of extrusion of pitted surface of tire inner liner |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517336A (en) * | 1978-11-09 | 1985-05-14 | Degussa Aktiengesellschaft | Rubber mixtures giving reversion-free vulcanizates and process of vulcanization |
| CN109824991A (en) * | 2019-02-18 | 2019-05-31 | 朝阳浪马轮胎有限责任公司 | A kind of low cost high dispersive high-air-tightness and its preparation process |
| CN111117026A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Rubber composition based on halogenated butyl rubber, vulcanized rubber, and preparation methods and applications thereof |
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2020
- 2020-08-24 CN CN202010857350.5A patent/CN111944245B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517336A (en) * | 1978-11-09 | 1985-05-14 | Degussa Aktiengesellschaft | Rubber mixtures giving reversion-free vulcanizates and process of vulcanization |
| CN111117026A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Rubber composition based on halogenated butyl rubber, vulcanized rubber, and preparation methods and applications thereof |
| CN109824991A (en) * | 2019-02-18 | 2019-05-31 | 朝阳浪马轮胎有限责任公司 | A kind of low cost high dispersive high-air-tightness and its preparation process |
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| CN111944245B (en) | 2023-01-03 |
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