CN113462090A - Preparation method of white carbon black-containing RIIR/IIR/EPDM inner tube - Google Patents
Preparation method of white carbon black-containing RIIR/IIR/EPDM inner tube Download PDFInfo
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- CN113462090A CN113462090A CN202110724061.2A CN202110724061A CN113462090A CN 113462090 A CN113462090 A CN 113462090A CN 202110724061 A CN202110724061 A CN 202110724061A CN 113462090 A CN113462090 A CN 113462090A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0041—Compositions of the carcass layers
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
A preparation method of a white carbon black RIIR/IIR/EPDM-containing combined inner tube relates to a preparation method of a truck tire inner tube, wherein a regenerated butyl rubber is taken as a main body, a butyl rubber and an ethylene propylene diene monomer are taken as matrix rubbers, a vulcanizing system is a sulfur vulcanizing system, a vulcanizing accelerator is 2,2' -Dithiodibenzothiazyl (DM), tetramethylthiuram disulfide (TMTD) and 4,4' -dithiodimorpholine (DTDM), an anti-aging agent is 9,9' -dimethylacridine (anti-aging agent BLE), and reinforcing agents are white carbon black and carbon black N660. The prepared inner tube has lower rolling resistance, lower heat generation performance and low cost, and the invention relates to a preparation method of a high-performance and low-cost inner tube of a truck tire.
Description
Technical Field
The invention relates to a preparation method of an automobile inner tube, in particular to a preparation method of an inner tube containing white carbon black RIIR/IIR/EPDM.
Background
White carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica and ultrafine silica gel, and also including powdery synthetic aluminum silicate, calcium silicate, and the like. The white carbon black is porous material, and its composition can be SiO2·nH2O represents, wherein nH2O exists in the form of surface hydroxyl, is high temperature resistant, non-combustible, tasteless and has good electrical insulation. The white carbon black can be used as a reinforcing agent for manufacturing rubber products in the rubber industry field to improve the mechanical property of the rubber products, and the white carbon black is a crystal particle, compared with other common carbon black type reinforcing agents, the particle size of the white carbon black is smaller than that of common carbon black, and the specific surface area is large, so that the strength can be improved to a great extent by adding the white carbon black into the rubber products, the rolling resistance of an inner tube can be reduced, the wear resistance and the moisture-carrying performance are improved, and the tearing strength, the wear resistance, the aging resistance and the adhesive property of rubber materials can be better improved. The butyl inner tube reclaimed rubber (RIIR) is processed by taking a waste butyl inner tube as a raw material, retains the basic structural characteristics of butyl rubber, contains residues of soluble rubber, insoluble gel, free sulfur, resin and a sulfur accelerator system, is used for replacing part of butyl rubber, can ensure that the prepared rubber product has heat resistance, ozone resistance and aging resistance, and reduces the production cost while ensuring the product quality. Generally, after a dynamic mechanical property test, tan delta obtained in a 60 ℃ test can be used for representing the rolling resistance of the rubber material, and the smaller tan delta at 60 ℃, the smaller the rolling resistance of the rubber material is; the tan delta obtained in the 80 ℃ test can be used for characterizing the dynamic heat buildup of the rubber, and the smaller the tan delta at 80 ℃, the smaller the heat buildup of the rubber compound.
Disclosure of Invention
The invention aims to provide a preparation method of a white carbon black-containing RIIR/IIR/EPDM inner tube, which takes regenerated butyl rubber as a main body, matches butyl rubber and ethylene propylene diene monomer rubber as matrix rubber, and after the white carbon black is added, the white carbon black has small particle size and large specific surface area, can reduce the rolling resistance of a prepared rubber product and reduce the heat generation performance, and the prepared product can reduce the rolling resistance in the driving process of an automobile, reduce the heat generation and reduce the production cost.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a white carbon black-containing RIIR/IIR/EPDM inner tube comprises the following preparation processes:
respectively placing RIIR, IIR and EPDM on an open mill for open milling, wrapping the rollers after uniform plastication, sequentially adding an active agent, a lubricant, an anti-aging agent, a reinforcing agent and a plasticizer into the rubber compound, and uniformly mixing the rubber compound; the RIIR/IIR/EPDM butyl inner tube comprises the following components in parts by weight: 75 parts of RIIR, 20 parts of IIR, 5 parts of EPDM, 1.0 part of sulfur, 1.3-1.7 parts of accelerator, 2.0 parts of vulcanization activator, 0-9 parts of white carbon black, 0-9 parts of carbon black, 1.5 parts of plasticizer and 0.3 part of anti-aging agent; the vulcanization time T of the rubber is then determined using a rotorless vulcameter90And under the condition of temperature of 170 ℃ and pressure of 10MPa, finding the rolling direction of the rubber, putting the rubber on a flat vulcanizing machine for vulcanization, standing for 8 hours, preparing a sample and testing.
The preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube is characterized in that the rubber is a composition of RIIR, IIR1751 butyl rubber and EPDM.
According to the preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube, zinc oxide and stearic acid are used as vulcanizing active agents.
According to the preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube, the anti-aging agent used by the rubber material is an anti-aging agent 9,9' -dimethylacridine (anti-aging agent BLE).
The preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube comprises the steps that the plasticizer is CK-90 petroleum resin and 58#A combination of semi-refined paraffin and paraffin oil.
The accelerator is 2,2 '-dithiodibenzothiazyl disulfide (accelerator DM), tetramethyl thiuram disulfide (accelerator TMTD) and 4,4' -dithiodimorpholine (accelerator DTDM).
According to the preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube, the reinforcing agent is white carbon black and carbon black N660.
The preparation method of the white carbon black-containing RIIR/IIR/EPDM inner tube is characterized in that the vulcanizing agent is sulfur.
The invention has the advantages and effects that:
the matrix rubber used in the invention is butyl inner tube reclaimed rubber, butyl rubber and ethylene propylene diene monomer, and after the white carbon black is added, the white carbon black has small particle size and large specific surface area, so that the rolling resistance of the prepared rubber product can be reduced, and the heat generation performance is reduced. The invention meets the market demand of the butyl inner tube of the lorry, and the manufactured product can reduce the rolling resistance in the running process of the lorry, reduce the heat generation and reduce the production cost.
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FIG. 1 is a comparative schematic view of an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to examples.
The invention relates to a preparation method of a white carbon black-containing RIIR/IIR/EPDM inner tube, which comprises the following steps: respectively placing RIIR, IIR and EPDM on an open mill for open milling, wrapping the rollers after uniform plastication, sequentially adding an active agent, a lubricant, an anti-aging agent, a reinforcing agent and a plasticizer into the rubber compound, standing for a period of time after the rubber compound is uniformly mixed, and then measuring the vulcanization time T of the stopped rubber by using a rotor-free vulcanizer90And under the condition of temperature of 170 ℃ and pressure of 10MPa, finding the rolling direction of the rubber, putting the rubber on a flat vulcanizing machine for vulcanization, standing for 8 hours, preparing a sample and testing.
The used instrument of this experiment: two-roll open mill, XK-160, Qingdao ball and Loop machines, Inc. Rubber rotor-less vulcanizers, GT-M2000-A, Taiwan high-speed railway science and technology Co. Flat vulcanizing machine XLB-DQ 400X 2E, Qingdao ball-and-Loop machines Ltd. A piece punching machine, CP-25, Shanghai chemical machinery four factories. Shore rubber hardness tester, XHS, Yingkou materials testing machine factory. A microcomputer-controlled universal tester, RGL-RH2000-A, Taiwan high-speed rail science and technology, Inc. Mooney viscosity Analyzer, UM-2050, Youken science and technology, Inc. Dynamic thermomechanical analyzer (DMA), model DMA 850, TA corporation, usa.
Example 1: putting 75 parts of regenerated butyl rubber (RIIR) on a double-roller open mill, vertically passing through the two-roller open mill for 3-5 times, adding 20 parts of butyl rubber (IIR 1751), passing through the two-roller open mill for 3-5 times, adding 5 parts of Ethylene Propylene Diene Monomer (EPDM), passing through the two-roller open mill for 3-5 times, adding 2.0 parts of activating agent zinc oxide and stearic acid, uniformly mixing, adding 0.3 part of anti-aging agent BLE, 58 parts of anti-aging agent BLE, and uniformly mixing#1.2 parts of semi-refined paraffin and petroleum resin, uniformly mixing, then adding carbon black N6609 parts as a reinforcing agent, 0.3 part of paraffin oil, 1.7 parts of vulcanization accelerator (DM, TMTD and DTDM), finally adding 1.0 part of sulfur, uniformly mixing on an open mill to obtain a rubber compound, vulcanizing at 170 ℃ by using a flat vulcanizing machine to obtain vulcanized rubber, and measuring the mechanical properties after punching, wherein the table 1 shows. The dynamic mechanical properties were measured with a dynamic thermomechanical analyzer and are shown in Table 2.
Example 2: the composition of this example is substantially the same as that of example 1, except that 2 parts of white carbon black and 7 parts of carbon black N660 are used instead of 9 parts of carbon black N660, and the experimental method is the same as that of example 1, and is not repeated herein.
Example 3: the composition of this example is substantially the same as that of example 1, except that 4 parts of white carbon black and 5 parts of carbon black N660 are used instead of 9 parts of carbon black N660, and the experimental method is the same as that of example 1, and is not repeated herein.
Example 4: the composition of this example is substantially the same as that of example 1, except that 5 parts of white carbon black and 4 parts of carbon black N660 are used instead of 9 parts of carbon black N660, and the experimental method is the same as that of example 1, and is not repeated herein.
Example 5: the composition of this example is substantially the same as that of example 1, except that 7 parts of white carbon black and 2 parts of carbon black N660 are used instead of 9 parts of carbon black N660, and the experimental method is the same as that of example 1, and is not repeated herein.
Example 6: the composition of this example is substantially the same as that of example 1, except that 9 parts of white carbon black are used instead of 9 parts of carbon black N660, and the experimental method is the same as that of example 1, and is not repeated herein.
Example 7: putting 75 parts of regenerated butyl rubber (RIIR) on a double-roller open mill, vertically passing through the two-roller open mill for 3-5 times, adding 20 parts of butyl rubber (IIR 1751), passing through the two-roller open mill for 3-5 times, adding 5 parts of Ethylene Propylene Diene Monomer (EPDM), passing through the two-roller open mill for 3-5 times, adding 2.0 parts of activating agent zinc oxide and stearic acid, uniformly mixing, adding 0.3 part of anti-aging agent BLE, 58 parts of anti-aging agent BLE, and uniformly mixing#1.2 parts of semi-refined paraffin and petroleum resin, mixing uniformly, adding 9 parts of white carbon black serving as a reinforcing agent, 0.3 part of paraffin oil, 1.6 parts of vulcanization accelerators (DM, TMTD and DTDM) and finally 1.0 part of sulfur, uniformly mixing on an open mill to obtain a rubber compound, vulcanizing at 170 ℃ by using a flat vulcanizing machine to obtain vulcanized rubber, and measuring the mechanical properties after punching, wherein the table 1 shows.
Example 8: the composition of this example is substantially the same as that of example 7, except that 1.5 parts of vulcanization accelerator (DM, TMTD, DTDM) is used instead of 1.6 parts of vulcanization accelerator (DM, TMTD, DTDM), and the experimental method is the same as that of example 7, and is not repeated here.
Example 9: the composition of this example is substantially the same as that of example 7, except that 1.4 parts of vulcanization accelerator (DM, TMTD, DTDM) is used instead of 1.6 parts of vulcanization accelerator (DM, TMTD, DTDM), and the experimental method is the same as that of example 7, and is not repeated here.
Example 10: the composition of this example is substantially the same as that of example 7, except that 1.3 parts of vulcanization accelerator (DM, TMTD, DTDM) is used instead of 1.6 parts of vulcanization accelerator (DM, TMTD, DTDM), and the experimental method is the same as that of example 7, and is not repeated here.
TABLE 1
TABLE 2
| tanδ | Example 1 | Example 3 | Example 6 |
| 60℃ | 0.15081 | 0.14875 | 0.14150 |
| 80℃ | 0.14876 | 0.14378 | 0.14061 |
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A preparation method of an inner tube containing white carbon black RIIR/IIR/EPDM is characterized by comprising the following preparation processes:
respectively placing RIIR, IIR and EPDM on an open mill for open milling, wrapping the rolls after uniform plastication, and sequentially adding an active agent, a lubricant, an anti-aging agent, a reinforcing agent and a plasticizer into the mixture for mixingIn the rubber, uniformly mixing the rubber compound to be mixed; the RIIR/IIR/EPDM butyl inner tube comprises the following components in parts by weight: 75 parts of RIIR, 20 parts of IIR, 5 parts of EPDM, 1.0 part of sulfur, 1.3-1.7 parts of accelerator, 2.0 parts of vulcanization activator, 0-9 parts of white carbon black, 0-9 parts of carbon black, 1.5 parts of plasticizer and 0.3 part of anti-aging agent; the vulcanization time T of the rubber is then determined using a rotorless vulcameter90And under the condition of temperature of 170 ℃ and pressure of 10MPa, finding the rolling direction of the rubber, putting the rubber on a flat vulcanizing machine for vulcanization, standing for 8 hours, preparing a sample and testing.
2. The method of claim 1, wherein the rubber is a composition of RIIR, IIR1751 butyl rubber, EPDM.
3. The method for preparing the silica-containing RIIR/IIR/EPDM inner tube as claimed in claim 1, wherein said vulcanization activator is zinc oxide or stearic acid.
4. The method for preparing the silica-containing RIIR/IIR/EPDM inner tube as claimed in claim 1, wherein the anti-aging agent used in the rubber material is anti-aging agent 9,9' -dimethylacridine (anti-aging agent BLE).
5. The method for preparing the silica-containing RIIR/IIR/EPDM inner tube of claim 1, wherein the plasticizer is CK-90 petroleum resin, 58#A combination of semi-refined paraffin and paraffin oil.
6. The method of claim 1, wherein the accelerator is 2,2 '-dithiodibenzothiazyl disulfide (accelerator DM), tetramethylthiuram disulfide (accelerator TMTD), or 4,4' -dithiodimorpholine (accelerator DTDM).
7. The method of claim 1, wherein the reinforcing agent is silica and carbon black N660.
8. The method for preparing the silica-containing RIIR/IIR/EPDM inner tube of claim 1, wherein the vulcanizing agent is sulfur.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146085A (en) * | 2013-03-27 | 2013-06-12 | 东莞市建东橡胶制品有限公司 | Proportional remote control racing car tire and preparation method thereof |
| CN104592653A (en) * | 2013-11-01 | 2015-05-06 | 建大橡胶（中国）有限公司 | High-gas-retention-performance inner tube rubber |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146085A (en) * | 2013-03-27 | 2013-06-12 | 东莞市建东橡胶制品有限公司 | Proportional remote control racing car tire and preparation method thereof |
| CN104592653A (en) * | 2013-11-01 | 2015-05-06 | 建大橡胶（中国）有限公司 | High-gas-retention-performance inner tube rubber |
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