CN115466440A - Large aviation radial tire bead filler and preparation method and application thereof - Google Patents
Large aviation radial tire bead filler and preparation method and application thereof Download PDFInfo
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- CN115466440A CN115466440A CN202211136338.0A CN202211136338A CN115466440A CN 115466440 A CN115466440 A CN 115466440A CN 202211136338 A CN202211136338 A CN 202211136338A CN 115466440 A CN115466440 A CN 115466440A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000011324 bead Substances 0.000 title abstract description 30
- 239000000945 filler Substances 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 60
- 229920001971 elastomer Polymers 0.000 claims description 80
- 239000005060 rubber Substances 0.000 claims description 80
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 52
- 230000003712 anti-aging effect Effects 0.000 claims description 41
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 36
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 25
- KDMCQAXHWIEEDE-UHFFFAOYSA-L cobalt(2+);7,7-dimethyloctanoate Chemical compound [Co+2].CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O KDMCQAXHWIEEDE-UHFFFAOYSA-L 0.000 claims description 24
- 229910052717 sulfur Inorganic materials 0.000 claims description 23
- 239000011593 sulfur Substances 0.000 claims description 23
- 244000043261 Hevea brasiliensis Species 0.000 claims description 21
- 239000006229 carbon black Substances 0.000 claims description 21
- 229920003052 natural elastomer Polymers 0.000 claims description 21
- 229920001194 natural rubber Polymers 0.000 claims description 21
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 19
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims description 19
- 229920001568 phenolic resin Polymers 0.000 claims description 19
- 239000005011 phenolic resin Substances 0.000 claims description 19
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 19
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 18
- 235000021355 Stearic acid Nutrition 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 18
- ODUCDPQEXGNKDN-UHFFFAOYSA-N nitroxyl Chemical compound O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 claims description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 18
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 18
- 239000008117 stearic acid Substances 0.000 claims description 18
- 239000011787 zinc oxide Substances 0.000 claims description 18
- 239000010692 aromatic oil Substances 0.000 claims description 16
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims 2
- 230000032683 aging Effects 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- KJONVQWTEXFKKS-UHFFFAOYSA-N cobalt;decanoic acid Chemical compound [Co].CCCCCCCCCC(O)=O KJONVQWTEXFKKS-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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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
- C08L7/00—Compositions of natural rubber
-
- 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
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
-
- 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
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
- B60C2015/042—Bead cores characterised by the material of the core, e.g. alloy
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
The invention provides a large aviation radial tire bead filler and a preparation method and application thereof, and belongs to the technical field of high polymer materials. The invention provides a large aviation radial tire apex which has the advantages of high hardness and aging resistance through reasonable matching of various matching agents, is suitable for large rigidity of a tire bead part of an aviation radial tire, can be matched with high hardness of a tire bead steel wire, improves the rigidity of the tire bead part of the tire, reduces deformation of the tire bead part in a rolling process, improves high-speed performance and durability of the large aviation radial tire, overcomes the defects of low hardness and poor aging resistance of the existing radial aviation radial tire apex, and improves the use safety and service life of the large aviation radial tire.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a large aviation radial tire apex and a preparation method and application thereof.
Background
The load of the tire bead part of the large radial tire is large, the material of the tire bead part generates heat greatly under the condition that the tire rotates at high speed, the temperature of a rim is high when the airplane brakes, the tire bead part is in direct contact with the rim, and the heat of the rim is transferred to the tire bead part, so that the temperature of the tire bead part is further improved, the performance of the apex rubber is reduced at high temperature, and the quality problems of delamination, fracture and the like of the tire bead part are easy to occur.
Disclosure of Invention
In view of the above, the invention aims to provide a large-scale aviation radial tire apex and a preparation method and application thereof. The large aviation radial tire apex provided by the invention has excellent hardness and aging resistance.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a large aviation radial tire bead filler which comprises the following components in parts by weight:
80-90 parts of natural rubber, 10-20 parts of styrene-butadiene rubber, 10-15 parts of high styrene rubber, 8-10 parts of 205 phenolic resin, 70-80 parts of carbon black N375, 8-10 parts of zinc oxide, 2-4 parts of stearic acid, 2-4 parts of p-phenylenediamine anti-aging agent, 1-3 parts of ketoamine anti-aging agent, 0.3-0.6 part of cobalt neodecanoate, 5-8 parts of aromatic oil, 4-5 parts of insoluble sulfur, 1-1.5 parts of thiazole accelerator, 0.5-0.8 part of accelerator H and 0.1-0.3 part of antiscorching agent CTP.
Preferably, the large aviation radial tire apex comprises the following components in parts by mass:
80 parts of natural rubber, 20 parts of styrene-butadiene rubber, 10 parts of high styrene rubber, 8 parts of 205 phenolic resin, 70 parts of carbon black N375, 8 parts of zinc oxide, 2 parts of stearic acid, 2 parts of p-phenylenediamine anti-aging agent, 1 part of ketoamine anti-aging agent, 0.3 part of cobalt neodecanoate, 5 parts of aromatic oil, 4 parts of insoluble sulfur, 1 part of thiazole accelerator, 0.5 part of accelerator H and 0.1 part of anti-scorching agent CTP.
Preferably, the large aviation radial tire apex comprises the following components in parts by mass:
85 parts of natural rubber, 15 parts of styrene-butadiene rubber, 12 parts of high styrene rubber, 9 parts of 205 phenolic resin, 75 parts of carbon black N375, 9 parts of zinc oxide, 3 parts of stearic acid, 3 parts of p-phenylenediamine anti-aging agent, 2 parts of ketoamine anti-aging agent, 0.5 part of cobalt neodecanoate, 6 parts of aromatic oil, 4.5 parts of insoluble sulfur, 1.2 parts of thiazole accelerator, 0.6 part of accelerator H and 0.2 part of anti-scorching agent CTP.
Preferably, the large aviation radial tire apex comprises the following components in parts by mass:
90 parts of natural rubber, 10 parts of styrene-butadiene rubber, 15 parts of high styrene rubber, 10 parts of 205 phenolic resin, 80 parts of carbon black N375, 10 parts of zinc oxide, 4 parts of stearic acid, 4 parts of p-phenylenediamine anti-aging agent, 3 parts of ketoamine anti-aging agent, 0.6 part of cobalt neodecanoate, 8 parts of aromatic oil, 5 parts of insoluble sulfur, 1.5 parts of thiazole accelerator, 0.8 part of accelerator H and 0.3 part of anti-scorching agent CTP.
Preferably, the high styrene rubber is high styrene S6H.
Preferably, the cobalt neodecanoate is cobalt neodecanoate KO-20.
Preferably, the insoluble sulphur is insoluble sulphur HDOT20.
The invention also provides a preparation method of the large-scale aviation radial tire apex rubber, which comprises the following steps:
mixing natural rubber, styrene butadiene rubber, carbon black N375 and aromatic hydrocarbon oil, and then sequentially carrying out first-stage mixing and rubber discharge to obtain first-stage mixed rubber;
mixing the first-stage rubber compound, the p-phenylenediamine anti-aging agent, the ketoamine anti-aging agent, the high styrene rubber, the 205 phenolic resin, the zinc oxide, the stearic acid and the cobalt neodecanoate, and then sequentially carrying out second-stage mixing and rubber discharge to obtain a second-stage rubber compound;
and mixing the second-stage rubber compound, insoluble sulfur, a thiazole accelerator, an accelerator H and an anti-scorching agent CTP, and then sequentially carrying out three-stage mixing and rubber discharge to obtain the large aviation radial tire apex.
Preferably, the temperature of the first-stage mixing is less than or equal to 160 ℃, and the time is 210-230 seconds; the temperature of the two-stage mixing is less than or equal to 150 ℃, and the time is 160-170 seconds; the temperature of the three-stage mixing is less than or equal to 105 ℃, and the time is 150-170 seconds.
The invention also provides the application of the large aviation radial tire apex in the technical scheme or the large aviation radial tire apex prepared by the preparation method in the technical scheme in an aviation tire.
The invention provides a large aviation radial tire bead filler which comprises the following components in parts by weight: 80-90 parts of natural rubber, 10-20 parts of styrene-butadiene rubber, 10-15 parts of high styrene rubber, 8-10 parts of 205 phenolic resin, 70-80 parts of carbon black N375, 8-10 parts of zinc oxide, 2-4 parts of stearic acid, 2-4 parts of p-phenylenediamine anti-aging agent (anti-aging agent 4010 NA), 1-3 parts of ketoamine anti-aging agent (anti-aging agent RD), 0.3-0.6 part of cobalt neodecanoate, 5-8 parts of aromatic oil, 4-5 parts of insoluble sulfur, 1-1.5 parts of thiazole accelerator, 0.5-0.8 part of accelerator H and 0.1-0.3 part of anti-scorching agent CTP. The invention provides a high-hardness, good-aging-resistant performance and high-tensile-strength triangular rubber, a crude rubber system adopts natural rubber and uses styrene butadiene rubber, the natural rubber has the characteristics of high tensile strength, high tearing strength, high elasticity, low heat generation, high elongation at break and good processability, and the styrene butadiene rubber has the characteristic of good aging-resistant performance; 205, the phenolic resin can improve the hardness of the rubber material and improve the technological properties of the rubber material such as dispersibility, surface viscosity and the like in the mixing process; the hardening agent adopts high styrene, and the high styrene can improve the hardness of the sizing material and improve the aging resistance of the sizing material; the reinforcing system adopts high wear-resistant carbon black N375, and the carbon black N375 has good reinforcing performance and good processing performance; cobalt neocaprate is added into the rubber material, so that the cobalt neocaprate improves the adhesive property of the rubber material and framework materials such as tire bead steel wires and the like, and can improve the hardness of the rubber material; aromatic oil is adopted in the softening system, so that the mixing uniformity of the rubber material in the mixing process is improved; the anti-aging system adopts p-phenylenediamine anti-aging agent 4010NA and ketoamine anti-aging agent RD in combination, the anti-aging agent 4010NA has the characteristic of good protection effect on thermal oxidation aging and flex cracking, and the anti-aging agent RD has the characteristic of good thermal oxidation aging resistance; the vulcanizing system adopts insoluble sulfur HDOT20, thiazole accelerant, accelerant H and scorch retarder CTP, the rubber material of the bead filler part is thick, the vulcanizing speed is required to be high, the vulcanizing speed is matched with the vulcanizing of the whole tire, and meanwhile, the bead filler is required to be vulcanized and shaped quickly, so that the shape of the tire bead part is ensured. Based on the performance characteristics of the materials, the invention provides the large aviation radial tire apex, through reasonable matching of various matching agents, the rubber material has the advantages of high hardness and aging resistance, is suitable for the large rigidity of the tire bead part of the aviation radial tire, can be matched with the high hardness of a tire bead steel wire, improves the rigidity of the tire bead part of the tire, reduces the deformation of the tire bead part in the rolling process of the tire, improves the high-speed performance and the durability of the large aviation radial tire, solves the defects of low hardness and poor aging resistance of the existing radial aviation radial tire apex, and improves the use safety and the service life of the large aviation tire.
The data of the examples show that the performance of the large aviation radial tire apex provided by the invention is shown in table 1.
TABLE 1 Properties of the apex for large aircraft radial tires provided by the invention
Drawings
FIG. 1 is a schematic view of a longitudinal cutting structure of an aircraft radial tire, wherein 1 is a tread rubber, 2 is a belt ply, 3 is a carcass ply, and 4 is a bead filler.
Detailed Description
The invention provides a large aviation radial tire bead filler which comprises the following components in parts by weight:
80-90 parts of natural rubber, 10-20 parts of styrene-butadiene rubber, 10-15 parts of high styrene rubber, 8-10 parts of 205 phenolic resin, 70-80 parts of carbon black N375, 8-10 parts of zinc oxide, 2-4 parts of stearic acid, 2-4 parts of p-phenylenediamine anti-aging agent, 1-3 parts of ketoamine anti-aging agent, 0.3-0.6 part of cobalt neodecanoate, 5-8 parts of aromatic oil, 4-5 parts of insoluble sulfur, 1-1.5 parts of thiazole accelerator, 0.5-0.8 part of accelerator H and 0.1-0.3 part of antiscorching agent CTP.
In the present invention, the starting materials used are all commercial products in the art unless otherwise specified.
In the invention, the large aviation radial tire apex preferably comprises the following components in parts by mass:
80 parts of natural rubber, 20 parts of styrene-butadiene rubber, 10 parts of high styrene rubber, 8 parts of 205 phenolic resin, 70 parts of carbon black N375, 8 parts of zinc oxide, 2 parts of stearic acid, 2 parts of p-phenylenediamine anti-aging agent, 1 part of ketoamine anti-aging agent, 0.3 part of cobalt neodecanoate, 5 parts of aromatic oil, 4 parts of insoluble sulfur, 1 part of thiazole accelerator, 0.5 part of accelerator H and 0.1 part of anti-scorching agent CTP;
or 85 parts of natural rubber, 15 parts of styrene-butadiene rubber, 12 parts of high styrene rubber, 9 parts of 205 phenolic resin, 75 parts of carbon black N375, 9 parts of zinc oxide, 3 parts of stearic acid, 3 parts of p-phenylenediamine anti-aging agent, 2 parts of ketoamine anti-aging agent, 0.5 part of cobalt neodecanoate, 6 parts of aromatic oil, 4.5 parts of insoluble sulfur, 1.2 parts of thiazole accelerator, 0.6 part of accelerator H and 0.2 part of scorch retarder CTP;
or 90 parts of natural rubber, 10 parts of styrene-butadiene rubber, 15 parts of high styrene rubber, 10 parts of 205 phenolic resin, 80 parts of carbon black N375, 10 parts of zinc oxide, 4 parts of stearic acid, 4 parts of p-phenylenediamine anti-aging agent, 3 parts of ketoamine anti-aging agent, 0.6 part of cobalt neodecanoate, 8 parts of aromatic oil, 5 parts of insoluble sulfur, 1.5 parts of thiazole accelerator, 0.8 part of accelerator H and 0.3 part of anti-scorching agent CTP.
In the present invention, the high styrene rubber is preferably high styrene S6H.
In the present invention, the cobalt neodecanoate is preferably cobalt neodecanoate KO-20.
In the invention, the insoluble sulfur is preferably insoluble sulfur HDOT20.
The invention also provides a preparation method of the large-scale aviation radial tire apex rubber, which comprises the following steps:
mixing natural rubber, styrene butadiene rubber, carbon black N375 and aromatic hydrocarbon oil, and then sequentially carrying out first-stage mixing and rubber discharge to obtain first-stage mixed rubber;
mixing the first-stage rubber compound, the p-phenylenediamine anti-aging agent, the ketoamine anti-aging agent, the high styrene rubber, the 205 phenolic resin, the zinc oxide, the stearic acid and the cobalt neodecanoate, and then sequentially carrying out second-stage mixing and rubber discharge to obtain a second-stage rubber compound;
and mixing the second-stage rubber compound, insoluble sulfur, a thiazole accelerator, an accelerator H and an anti-scorching agent CTP, and then sequentially carrying out three-stage mixing and rubber discharge to obtain the large aviation radial tire apex.
The invention mixes natural rubber, butadiene styrene rubber, carbon black N375 and aromatic hydrocarbon oil, and then carries out first-stage mixing and rubber discharge in sequence to obtain first-stage mixed rubber.
In the invention, the temperature of the first-stage mixing is preferably less than or equal to 160 ℃, and the time is preferably 210-230 seconds.
Preferably, the natural rubber and the styrene butadiene rubber are firstly put into an internal mixer and then internally mixed for 30 to 40 seconds, and then the carbon black N375 and the aromatic oil are put into the internal mixer.
After the first-stage mixing is completed, the mixture is preferably discharged out of the internal mixer to the lower sheet of the tablet press, and cooling, standing and rubber discharge are sequentially carried out.
In the invention, the time for removing the glue is preferably 16-24 h.
After the first-stage rubber compound is obtained, the first-stage rubber compound, the p-phenylenediamine anti-aging agent, the ketoamine anti-aging agent, the high styrene rubber, the 205 phenolic resin, the zinc oxide, the stearic acid and the cobalt neodecanoate are mixed and then sequentially subjected to second-stage mixing and rubber discharge to obtain a second-stage rubber compound.
In the present invention, the temperature of the two-stage mixing is preferably 150 ℃ or less, and the time is preferably 160 to 170 seconds.
After the two-stage mixing is completed, the mixture is preferably discharged out of the internal mixer to the lower sheet of the tablet press, and cooling, standing and rubber discharge are sequentially carried out.
In the invention, the time for removing the glue is preferably 16-24 h.
After the second-stage rubber compound is obtained, the second-stage rubber compound, insoluble sulfur, a thiazole accelerator, an accelerator H and an anti-scorching agent CTP are mixed and then sequentially subjected to three-stage mixing and rubber discharge to obtain the large aviation radial tire apex.
In the invention, the temperature of the three-stage mixing is preferably less than or equal to 105 ℃, and the time is preferably 150-170 seconds.
After the three-stage mixing is completed, the mixture obtained is preferably discharged out of an internal mixer to the lower sheet of a tablet press, and cooling, standing and rubber discharge are sequentially carried out.
In the invention, the time for removing the glue is preferably 16-24 h.
In the present invention, the first-stage mixing, the second-stage mixing and the third-stage mixing are all performed in an internal mixer.
After the rubber discharge is finished, the invention preferably extrudes the semi-finished product of the apex on an apex extruder of the aircraft radial tire, and sequentially performs carcass forming, bead forming, combined forming and tire blank vulcanization on a forming machine to obtain a finished tire product.
The invention also provides application of the large aviation radial tire apex rubber in the technical scheme or the large aviation radial tire apex rubber prepared by the preparation method in the technical scheme in an aviation tire.
The invention is not particularly limited to the specific forms of use described, and may be practiced in a manner well known to those skilled in the art.
FIG. 1 is a schematic view of a longitudinal cutting structure of an aircraft radial tire, wherein 1 is a tread rubber, 2 is a belt ply, 3 is a carcass ply, and 4 is a bead filler.
In order to further illustrate the present invention, the following examples are provided to describe the large aircraft radial tire apex, its preparation method and application in detail, but they should not be construed as limiting the scope of the present invention.
The raw material amounts of the large aircraft radial ply apex of examples 1 to 3 and comparative example are shown in table 2,
TABLE 2 raw material amounts of apex for large aircraft radial tires of examples 1 to 3 and comparative example
The preparation process of the large aviation radial tire apex in the examples 1 to 3 and the comparative example is as follows:
first-stage mixing:
(1) And (3) putting the natural rubber and the butadiene styrene rubber into an internal mixer according to the proportion, and mixing and banburying for 30 seconds.
(2) Adding the ultra-high milled carbon black N375 and aromatic oil into an internal mixer according to a proportion, mixing and internally mixing for 210 seconds at 160 ℃.
(3) Discharging the mixture out of the internal mixer to the lower sheet of the tablet press, cooling, standing for 24h, and obtaining a rubber compound.
And (3) second-stage mixing:
(1) Putting the anti-aging agent 4010NA, the anti-aging agent RD, the zinc oxide, the stearic acid, the high styrene S6H, the 205 phenolic resin and the cobalt neodecanoate KO-20 into an internal mixer together with a rubber compound according to a proportion, mixing and banburying for 160 seconds; the temperature was 150 ℃.
(2) Discharging the mixture out of the internal mixer to the lower piece of the tablet press, cooling and standing for 16h, wherein the rubber is a two-stage rubber compound.
Three-stage mixing:
(1) Adding insoluble sulfur HDOT20, thiazole accelerant, accelerant H and antiscorching agent CTP into an internal mixer together with the second-stage rubber compound according to the proportion, mixing and banburying for 170 seconds; the temperature was 105 ℃.
(2) And discharging the mixture out of the internal mixer to a lower sheet of a tablet press, cooling and standing, wherein the rubber is final rubber, and the large aviation radial tire bead filler is obtained.
Extruding the semi-finished product of the apex on an apex extruder of the aircraft radial tire, performing carcass forming, bead forming and combined forming on a forming machine to manufacture a tire blank, and vulcanizing the tire blank by a vulcanizing machine to obtain a finished tire product.
The performance of the large aviation radial tire apex prepared in examples 1 to 3 and the comparative example was tested, and the results are shown in table 3. From Table 3, the comparative example formulation is significantly lower in hardness, tensile strength after aging, than the present invention.
TABLE 3 Properties of Large aircraft radial bead fillers obtained in examples 1 to 3 and comparative example
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The large aviation radial tire apex is characterized by comprising the following components in parts by mass:
80-90 parts of natural rubber, 10-20 parts of styrene-butadiene rubber, 10-15 parts of high styrene rubber, 8-10 parts of 205 phenolic resin, 8-80 parts of carbon black N37570, 8-10 parts of zinc oxide, 2-4 parts of stearic acid, 2-4 parts of p-phenylenediamine antioxidants, 1-3 parts of ketoamine antioxidants, 0.3-0.6 part of cobalt neodecanoate, 5-8 parts of aromatic oil, 4-5 parts of insoluble sulfur, 1-1.5 parts of thiazole accelerators, 0.5-0.8 part of accelerators H and 0.1-0.3 part of antiscorching agents CTP.
2. The large aviation radial tire apex of claim 1, which is characterized by comprising the following components in parts by mass:
80 parts of natural rubber, 20 parts of styrene-butadiene rubber, 10 parts of high styrene rubber, 8 parts of 205 phenolic resin, 8 parts of carbon black N37570, 8 parts of zinc oxide, 2 parts of stearic acid, 2 parts of p-phenylenediamine anti-aging agent, 1 part of ketoamine anti-aging agent, 0.3 part of cobalt neodecanoate, 5 parts of aromatic oil, 4 parts of insoluble sulfur, 1 part of thiazole accelerator, 0.5 part of accelerator H and 0.1 part of anti-scorching agent CTP.
3. The large aviation radial tire apex of claim 1, which is characterized by comprising the following components in parts by mass:
85 parts of natural rubber, 15 parts of styrene-butadiene rubber, 12 parts of high styrene rubber, 9 parts of 205 phenolic resin, 37575 parts of carbon black, 9 parts of zinc oxide, 3 parts of stearic acid, 3 parts of p-phenylenediamine anti-aging agent, 2 parts of ketoamine anti-aging agent, 0.5 part of cobalt neodecanoate, 6 parts of aromatic oil, 4.5 parts of insoluble sulfur, 1.2 parts of thiazole accelerator, 0.6 part of accelerator H and 0.2 part of anti-scorching agent CTP.
4. The large aviation radial tire apex of claim 1, which is characterized by comprising the following components in parts by mass:
90 parts of natural rubber, 10 parts of styrene-butadiene rubber, 15 parts of high styrene rubber, 10 parts of 205 phenolic resin, 10 parts of carbon black N37580 parts, 10 parts of zinc oxide, 4 parts of stearic acid, 4 parts of p-phenylenediamine anti-aging agent, 3 parts of ketoamine anti-aging agent, 0.6 part of cobalt neodecanoate, 8 parts of aromatic oil, 5 parts of insoluble sulfur, 1.5 parts of thiazole accelerator, 0.8 part of accelerator H and 0.3 part of anti-scorching agent CTP.
5. The large aircraft radial tire apex of any one of claims 1 to 4, wherein the high styrene rubber is high styrene S6H.
6. The large aircraft radial tire apex of any one of claims 1 to 4, wherein the cobalt neodecanoate is cobalt neodecanoate KO-20.
7. The large-scale aviation radial tire apex as claimed in any one of claims 1 to 4, wherein the insoluble sulfur is insoluble sulfur HDOT20.
8. The method for preparing the large-scale aviation radial tire apex rubber of any one of claims 1 to 7, is characterized by comprising the following steps:
mixing natural rubber, styrene butadiene rubber, carbon black N375 and aromatic hydrocarbon oil, and then sequentially carrying out first-stage mixing and rubber discharge to obtain first-stage mixed rubber;
mixing the first-stage rubber compound, a p-phenylenediamine anti-aging agent, a ketoamine anti-aging agent, high styrene rubber, 205 phenolic resin, zinc oxide, stearic acid and cobalt neodecanoate, and then sequentially performing second-stage mixing and rubber discharge to obtain a second-stage rubber compound;
and mixing the second-stage rubber compound, insoluble sulfur, a thiazole accelerator, an accelerator H and an anti-scorching agent CTP, and then sequentially carrying out three-stage mixing and rubber discharge to obtain the large aviation radial tire apex.
9. The preparation method of claim 8, wherein the temperature of the first mixing section is less than or equal to 160 ℃ and the time is 210-230 seconds; the temperature of the two-stage mixing is less than or equal to 150 ℃, and the time is 160-170 seconds; the temperature of the three-stage mixing is less than or equal to 105 ℃, and the time is 150-170 seconds.
10. Use of the large aircraft radial tire apex according to any one of claims 1 to 7 or the large aircraft radial tire apex prepared by the preparation method according to claim 8 or 9 in an aircraft tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211136338.0A CN115466440A (en) | 2022-09-19 | 2022-09-19 | Large aviation radial tire bead filler and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211136338.0A CN115466440A (en) | 2022-09-19 | 2022-09-19 | Large aviation radial tire bead filler and preparation method and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005041974A (en) * | 2003-07-28 | 2005-02-17 | Bridgestone Corp | Radial tire |
| CN101434718A (en) * | 2008-12-15 | 2009-05-20 | 昊华南方(桂林)橡胶有限责任公司 | Giant engineering machinery tyre repair adhesive and preparation thereof |
| CN112592519A (en) * | 2020-12-15 | 2021-04-02 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Aviation radial tire tread rubber and preparation method thereof |
| CN113667195A (en) * | 2021-08-24 | 2021-11-19 | 青岛科技大学 | High-wear-resistance tire tread rubber and preparation method thereof |
-
2022
- 2022-09-19 CN CN202211136338.0A patent/CN115466440A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005041974A (en) * | 2003-07-28 | 2005-02-17 | Bridgestone Corp | Radial tire |
| CN101434718A (en) * | 2008-12-15 | 2009-05-20 | 昊华南方(桂林)橡胶有限责任公司 | Giant engineering machinery tyre repair adhesive and preparation thereof |
| CN112592519A (en) * | 2020-12-15 | 2021-04-02 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Aviation radial tire tread rubber and preparation method thereof |
| CN113667195A (en) * | 2021-08-24 | 2021-11-19 | 青岛科技大学 | High-wear-resistance tire tread rubber and preparation method thereof |
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Application publication date: 20221213 |