CN116731405A - Tire cord fabric sizing composition, mixing method thereof and all-steel radial tire - Google Patents
Tire cord fabric sizing composition, mixing method thereof and all-steel radial tire Download PDFInfo
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- CN116731405A CN116731405A CN202310775314.8A CN202310775314A CN116731405A CN 116731405 A CN116731405 A CN 116731405A CN 202310775314 A CN202310775314 A CN 202310775314A CN 116731405 A CN116731405 A CN 116731405A
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- 238000002156 mixing Methods 0.000 title claims abstract description 59
- 239000004744 fabric Substances 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000010959 steel Substances 0.000 title claims abstract description 12
- 238000004513 sizing Methods 0.000 title abstract description 13
- 239000000203 mixture Substances 0.000 title description 4
- 239000006229 carbon black Substances 0.000 claims abstract description 62
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229920001971 elastomer Polymers 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 19
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000013543 active substance Substances 0.000 claims abstract description 11
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 7
- 229920003049 isoprene rubber Polymers 0.000 claims abstract description 7
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 7
- 229920001194 natural rubber Polymers 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 17
- 229910052717 sulfur Inorganic materials 0.000 claims description 17
- 239000011593 sulfur Substances 0.000 claims description 17
- 239000002318 adhesion promoter Substances 0.000 claims description 15
- 239000007822 coupling agent Substances 0.000 claims description 11
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 9
- -1 bis- (triethoxysilane) propyl tetrasulfide Chemical compound 0.000 claims description 8
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- BNCADMBVWNPPIZ-UHFFFAOYSA-N 2-n,2-n,4-n,4-n,6-n,6-n-hexakis(methoxymethyl)-1,3,5-triazine-2,4,6-triamine Chemical compound COCN(COC)C1=NC(N(COC)COC)=NC(N(COC)COC)=N1 BNCADMBVWNPPIZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 4
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 4
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 2
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 claims description 2
- 229960003493 octyltriethoxysilane Drugs 0.000 claims description 2
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 claims description 2
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical group [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 abstract description 10
- 238000005096 rolling process Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 239000012779 reinforcing material Substances 0.000 abstract description 5
- 230000000704 physical effect Effects 0.000 abstract description 3
- 235000019241 carbon black Nutrition 0.000 description 41
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 241001441571 Hiodontidae Species 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CMAUJSNXENPPOF-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-n-cyclohexylcyclohexanamine Chemical compound C1CCCCC1N(C1CCCCC1)SC1=NC2=CC=CC=C2S1 CMAUJSNXENPPOF-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000002444 silanisation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Classifications
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
-
- 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
-
- 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
Landscapes
- 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)
Abstract
The invention relates to the technical field of rubber materials, in particular to a tire wirecord fabric sizing material with low rolling resistance and high cost performance, a mixing method thereof and an all-steel radial tire. The tire wirecord fabric composite material is prepared by mixing the following raw materials in parts by weight according to 100 parts by weight of rubber component: 60-100 parts of natural rubber, 0-40 parts of isoprene rubber, 10-40 parts of silicone powder, 25-55 parts of carbon black and 5.0-40 parts of white carbon black; and an appropriate amount of an anti-aging agent, an active agent, an accelerator and a vulcanizing agent. According to the invention, the silica powder is added into the tire wirecord fabric sizing material to be used as a reinforcing material to partially or completely replace the white carbon black, and the dispersibility of the white carbon black in the sizing material is improved by reducing the white carbon black content in the sizing material. The object of the present invention is to provide a tire wirecord rubber compound comprising silicone powder which reduces the energy loss during mixing and the rolling resistance of the tire and minimizes the loss of physical properties such as the steel pullout properties.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a tire wirecord fabric sizing material with low rolling resistance and high cost performance, a mixing method thereof and an all-steel radial tire.
Background
In recent years, the global interest in environmental problems has been increasing, and the control of carbon dioxide emissions has tended. In order to reduce the fuel consumption of automobiles, it is necessary to develop tires having low rolling resistance. For this reason, it is very beneficial to reduce the energy loss of the component compounds in the tire, which can meet the requirements of low energy tires.
The current tire wirecord fabric formulation is generally formed by combining raw rubber, carbon black, white carbon black, an active agent, an anti-aging agent, a vulcanizing agent, resorcinol, an adhesion promoter and the like. Wherein the white carbon black is an important component in a meta-alpha-white system and mainly plays a role in enhancing the adhesive force between the phenolic resin and the steel wire. In addition, white carbon black and a coupling agent are used together to reduce hysteresis loss of the sizing material.
However, the polar surface chemistry of white carbon black affects its processability and miscibility with non-polar rubber. This makes it difficult to effectively disperse white carbon black in mixing a rubber compound and requires more shear force. This results in high power consumption and increased time costs during mixing. In addition, in the mixing preparation, the silanization reaction has extremely high requirements on mixing temperature and time, and the generated moisture is remained in the sizing material, so that the bonding performance with steel wires is greatly reduced.
The silicone powder is derived from natural minerals and is physically machined to produce a porous particle. It has loose particle-sheet laminated mosaic structure, and the mixed structure is not separated by common physical and mechanical modes, so that it has ultrahigh fluidity and dispersion property. And the price is only 60 percent of the price of the white carbon black.
Chinese patent No. CN115785852a discloses an adhesive, which comprises the following raw materials in parts by weight: 100-200 parts of master batch prepared by mixing rubber and white carbon black by a wet method; 0.5 to 8.0 portions of anti-aging agent; 1.0 to 8.0 percent of active agent; 0.0 to 40.0 percent of plasticizer; 0.0 to 20.0 portions of tackifying resin; 0.0 to 20.0 portions of adhesion promoter; 0.5 to 7.0 portions of vulcanization accelerator; 0.0 to 5.0 percent of sulfur-containing cross-linking agent and 0.0 to 5.0 percent of non-sulfur-containing cross-linking agent, wherein the two cross-linking agents are not 0 at the same time; 0.0 to 4.0 portions of auxiliary cross-linking agent and 0.1 to 1.0 portions of scorch retarder. The adhesive compound of the invention has high adhesive strength, high tensile strength and elongation, extremely low hysteresis loss and excellent processability. The problems are that new equipment, plants and personnel are added for wet mixing, and white rubber obtained by wet mixing has very strict requirements on storage conditions and time-limited use conditions.
The Chinese patent CN114381045A discloses a high-performance curtain cloth rubber for tires and a preparation method thereof, wherein the high-performance curtain cloth rubber is prepared from the following raw materials in parts by weight: 70-100 parts of natural rubber, 0-30 parts of isoprene rubber, 0-3 parts of stearic acid, 3-10 parts of zinc oxide, 1-4 parts of magnesium oxide, 0-2 parts of cobalt salt, 0-2 parts of methyl donor, 0-3 parts of methyl acceptor, 0.5-2 parts of accelerator, 3-5.4 parts of sulfur, 2-6 parts of antioxidant, 25-70 parts of carbon black, 8-35 parts of white carbon black, 0-4 parts of coupling agent, 0-3 parts of anti-reversion agent and 0-0.5 part of scorch retarder. The invention has good balance of hardness, compression heat generation and elongation at break. The problem is that sulfur of the cord fabric part can migrate to surrounding parts, and after sulfur is reduced, the migration still exists, so that Cu with proper thickness can not be formed between cord fabric rubber material and steel wires in the tire x S-bond layer may lead to unstable tire performance.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the tire wirecord fabric sizing material with low rolling resistance and high cost performance, and the silica powder is added into the tire wirecord fabric sizing material to be used as reinforcing material to replace white carbon black partially or completely, so that the dispersibility of the white carbon black in the sizing material is improved by reducing the content of the white carbon black in the sizing material. The object of the present invention is to provide a tire wirecord rubber compound comprising silicone powder which reduces the energy loss during mixing and the rolling resistance of the tire and minimizes the loss of physical properties such as the steel pullout properties.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the tire wirecord fabric composite material is prepared by mixing the following raw materials in parts by weight according to 100 parts by weight of rubber component:
60-100 parts of natural rubber
0-40 parts of isoprene rubber
10-40 parts of silicone powder
25-55 parts of carbon black
5.0-40 parts of white carbon black;
and an appropriate amount of an anti-aging agent, an active agent, an accelerator and a vulcanizing agent.
Further, the composite material is prepared by mixing the following raw materials in parts by weight according to 100 parts by weight of rubber component:
70-100 parts of natural rubber
0-30 parts of isoprene rubber
20-30 parts of silicone powder
30-44 parts of carbon black
8.0-30 parts of white carbon black.
The silicone powder of the present invention is a porous natural microparticle. The inorganic mineral consists of natural quasi-spherical granular quartz and flaky kaolin, and the two minerals with different shapes are naturally combined to form a loose granular and flaky laminated mosaic structure. The particle size is fine, the specific surface area is large, and the particles are easy to disperse in rubber.
Further, the silicone powder is nano silicone powder; and/or the number of the groups of groups,
the carbon black is one or more of carbon black N375, carbon black N326, carbon black N660 or carbon black N330; and/or the number of the groups of groups,
the white carbon black is one or more of white carbon black 165Gr, white carbon black 175Gr and white carbon black 200 MP.
Further, the composite material further includes one or more of a coupling agent, an adhesion promoter, and a scorch retarder;
preferably, the coupling agent is 0-4 parts, and more preferably 0-3 parts; still preferably, the coupling agent is one or more of bis- (triethoxysilane) propyl tetrasulfide (TESPT), bis- (triethoxysilane) propyl disulfide Octyl Triethoxysilane (OTES) or mercaptosilanes;
preferably, the adhesion promoter is 1.0 to 12 parts, more preferably 2.0 to 7.0 parts; still more preferably, the adhesion promoter is one or more of hexamethoxymethyl melamine, a substance containing hexamethoxymethyl melamine as an active ingredient, hexamethylenetetramine, a substance containing hexamethylenetetramine as an active ingredient, cobalt organic acid, nickel organic acid, resorcinol resin;
preferably, 0-1.0 part of scorch retarder, and more preferably 0.1-0.4 part; still more preferably, the scorch retarder is a thioimide, preferably CTP.
Further, 1.0 to 7.0 parts, preferably 2.0 to 5.0 parts of an anti-aging agent; 1-12 parts, preferably 6-10 parts, of an active agent; 0.3-2.0 parts, preferably 0.8-1.5 parts, of promoter; vulcanizing agent: 3 to 10 parts, preferably 4 to 7 parts.
Further, the anti-aging agent is one or more of a common anti-aging agent and a long-acting anti-aging agent; and/or the number of the groups of groups,
the active agent can be selected from the active agents in the prior art, preferably zinc oxide and stearic acid; and/or the number of the groups of groups,
the vulcanizing agent is common sulfur, insoluble sulfur and a sulfur donor, preferably insoluble sulfur, more preferably insoluble sulfur OT20; and/or the number of the groups of groups,
the accelerator is a sulfenamide accelerator, preferably one or more of NS/CZ/DZ.
The invention further discloses a mixing method of the tire wirecord fabric composite material, which comprises the following steps:
first-stage masterbatch: setting the rotation speed of an internal mixer to 50-55rpm, adding 100 parts of rubber into the internal mixer, pressing a top plug for mixing and keeping for 25-35 seconds, adding 10-12 parts of carbon black into the top plug, pressing the top plug for mixing and keeping for 40-60 seconds, cleaning the top plug for 3-5 seconds, pressing the top plug for mixing and keeping for 20-40 seconds, discharging the rubber at the temperature of 150-160 ℃, and cooling to obtain a section of master batch;
and (3) mixing in a second stage: setting the rotation speed of an internal mixer to 45-50rpm, adding a section of masterbatch, residual carbon black, white carbon black, silicone powder and a coupling agent, pressing a top plug for mixing and keeping for 30-40 seconds, pressing the top plug for mixing to 125 ℃, lifting the top plug, adding an anti-aging agent, an activating agent and a part of adhesion promoter, pressing the top plug for mixing and keeping for 30-40 seconds, lifting the top plug for cleaning for 3-5 seconds, pressing the top plug for mixing and keeping for 15-30 seconds, discharging rubber at 145-155 ℃, and cooling to obtain a second-section mixing material;
and (3) mixing in a third section: setting the rotation speed of an internal mixer to 20-30rpm, adding two-stage mixed rubber, the residual adhesion promoter, the vulcanizing agent, the accelerator and the scorch retarder, pressing a top bolt, mixing and keeping for 20-30 seconds, lifting the top bolt, cleaning for 3-5 seconds, pressing the top bolt, mixing and keeping for 15-30 seconds, discharging rubber at the temperature of 100-110 ℃, and cooling to obtain the final rubber.
Further, the invention also discloses application of the composite material in preparation of tire wirecord fabric.
Further, the invention also discloses a tire wirecord fabric, which comprises steel wires and the composite material.
Further, the invention also discloses a tire, and the tire adopts the wirecord fabric.
The beneficial effects of the invention are as follows:
1. the silica powder with a flaky structure is used for partially replacing the white carbon black to be used as a reinforcing material, so that the dispersibility of the two white carbon blacks can be effectively improved, and the energy consumption in the mixing process is reduced;
2. compared with the method of using white carbon black as a reinforcing material, the silica powder in the technical scheme can slide relatively in an interlayer structure under the stress deformation of the tire, so that the internal stress and friction are effectively reduced, the internal energy is reduced, and the heat generation of the tire is reduced;
3. compared with the method for increasing the interaction between the silicon dioxide and the rubber or reducing the silicon dioxide content, the technical scheme can improve the dispersibility of the silicon dioxide under the condition of maintaining the silicon dioxide content, thereby avoiding the deterioration of the mechanical properties of the tire due to the reduction of the reinforcing property and the adhesive property. In summary, the technical scheme optimizes the reinforcing material combination of the tire wirecord fabric by using the silicone powder with the flaky structure, can effectively solve the problems of poor dispersibility, poor processability and the like of the two white carbon black in the prior art, has better processability and miscibility, thereby improving the performance and quality of the tire and obtaining lower design cost.
Detailed Description
The technical scheme in the embodiment of the invention is checked and fully described in combination with the embodiment of the invention, and the invention is further explained. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. Given the embodiments of the present invention, all other embodiments that would be obvious to one of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
Examples of the present invention and comparative examples are shown in Table 1.
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | |
| Natural rubber | 100 | 100 | 100 | 100 | 70 | 100 | 100 |
| Isoprene rubber | 30 | ||||||
| Carbon black N375 | 44 | 30 | 30 | 30 | 30 | 44 | 30 |
| Silicosa powder | 10 | 28 | 10 | 18 | 22 | ||
| White carbon black 175 | 20 | 10 | 8 | 10 | 30 | ||
| Silane coupling agent | 2.0 | 3.0 | |||||
| Activating agent | 8.0 | 8.5 | 8.0 | 8.5 | 8.6 | 8.0 | 8.0 |
| Adhesion promoter | 7.7 | 7.7 | 7.7 | 7.7 | 8.7 | 7.7 | 7.7 |
| Anti-aging agent | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
| Insoluble sulfur | 5.0 | 5.0 | 4.8 | 4.8 | 5.1 | 5.0 | 4.8 |
| Accelerator NS | 0.5 | 0.5 | 0.6 | 0.5 | 0.9 | 0.9 | 0.9 |
| Accelerator DZ | 0.55 | 0.5 | 0.5 | 0.6 | 0.3 | 0.3 | 0.3 |
| Coke inhibitor CTP | 0.1 | 0.2 | 0.1 | 0.15 | 0.2 | 0.1 | 0.1 |
| Physical Properties | |||||||
| ML1+4 | 71.6 | 79 | 83 | 82 | 82 | 76.9 | 88 |
| M300 | 18.4 | 18.9 | 18.3 | 17.9 | 17.4 | 17.8 | 18.5 |
| Tb | 22.2 | 23.5 | 23.2 | 22.9 | 23.2 | 22.5 | 23 |
| Eb | 338 | 328 | 326 | 351 | 372 | 359 | 324 |
| Hs | 75 | 77 | 77 | 76 | 75 | 76 | 77 |
| Permanent deformation | 17 | 19 | 21 | 23 | 20 | 20 | 22 |
| Tearing off | 67.96 | 76 | 75.3 | 73 | 72 | 66.26 | 74.9 |
| Aging retention rate | 43% | 48% | 44% | 45% | 48% | 35% | 42% |
| Heat generation | 0.129 | 0.104 | 0.119 | 0.112 | 0.112 | 0.138 | 0.131 |
| Extraction force | 908 | 916 | 947 | 938 | 928 | 935.05 | 941 |
| Coating rate of the adhesive | 96% | 95% | 96% | 96% | 95% | 98% | 97% |
The comparative example used the same mixing process as in the examples, as follows:
first-stage masterbatch: setting the rotation speed of an internal mixer to 50-55rpm, adding 100 parts of rubber into the internal mixer, pressing a top plug for mixing and keeping for 30 seconds, adding 10-12 parts of carbon black into the top plug, pressing the top plug for mixing and keeping for 40-60 seconds, cleaning the top plug for 3-5 seconds, pressing the top plug for mixing and keeping for 20-40 seconds, discharging the rubber at the temperature of 155 ℃, and cooling to obtain a section of master batch.
And (3) mixing in a second stage: setting the rotation speed of an internal mixer to 45-50rpm, adding a section of master batch, residual carbon black, white carbon black, silicone powder and a coupling agent, pressing a top plug for mixing and keeping for 30-40 seconds, pressing the top plug for mixing to 125 ℃, lifting the top plug, adding an anti-aging agent, an activating agent and a part of adhesion promoter, pressing the top plug for mixing and keeping for 30-40 seconds, lifting the top plug for cleaning for 3-5 seconds, pressing the top plug for mixing and keeping for 15-30 seconds, discharging rubber at the temperature of 150 ℃, and cooling to obtain a second-section mixing material.
And (3) mixing in a third section: setting the rotation speed of an internal mixer to 20-30rpm, adding two-stage mixed rubber, the residual adhesion promoter, insoluble sulfur, the promoter and the scorch retarder, pressing a top bolt, mixing and keeping for 20-30 seconds, lifting the top bolt, cleaning for 3-5 seconds, pressing the top bolt, mixing and keeping for 15-30 seconds, discharging rubber at the temperature of 105 ℃, and cooling to obtain the final rubber.
From examples 1-2 and comparative examples 1-2, it can be concluded that: after the silica powder is completely substituted for the white carbon black, the Mooney of the final rubber mixture is reduced, and the more the white carbon black is substituted, the more the Mooney is obviously reduced, which shows that the energy consumption in the mixing process can be reduced in the case of the same Mooney in examples 1-2. And heat generation is reduced. This is due to the loose pellet laminate structure of the silicone powder. Under the stress deformation of the tire, relative sliding can occur in the interlayer structure, so that internal stress and friction are effectively reduced, internal energy is reduced, and heat generation is reduced. The aging retention rate is also improved, because particles in the silicone powder are uniformly dispersed in the crosslinked network of the rubber, and the loose particle sheet lamination-shaped mosaic structure can effectively prevent oxygen from invading the vulcanized rubber, so that the breakage of crosslinking bonds is reduced.
From examples 3-5 and comparative example 2, it can be concluded that: after the silica powder partially replaces the white carbon black, the Mooney drop is increased, the heat generation is reduced and increased, and the ageing retention rate is improved along with the increase of the replacement amount. Meanwhile, the extraction force and the coating rate can keep equivalent performance, and the performance requirement of the all-steel cord fabric is met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The tire wirecord fabric composite material is characterized in that the composite material is prepared by mixing the following raw materials according to 100 parts by weight of rubber component:
60-100 parts of natural rubber
0-40 parts of isoprene rubber
10-40 parts of silicone powder
25-55 parts of carbon black
0-40 parts of white carbon black;
and an appropriate amount of an anti-aging agent, an active agent, an accelerator and a vulcanizing agent.
2. A tire wirecord fabric composite material according to claim 1, wherein the composite material is prepared by mixing the following raw materials in 100 parts by weight of rubber component:
70-100 parts of natural rubber
0-30 parts of isoprene rubber
20-30 parts of silicone powder
30-44 parts of carbon black
5.0-30 parts of white carbon black.
3. A tire cord fabric composite material according to claim 1 or 2, wherein the silicone powder is nano-sized silicone powder; and/or the number of the groups of groups,
the carbon black is one or more of carbon black N375, carbon black N326, carbon black N660 or carbon black N330; and/or the number of the groups of groups,
the white carbon black is one or more of white carbon black 165Gr, white carbon black 175Gr and white carbon black 200 MP.
4. A tire wirecord fabric composite according to claim 1 or 2, wherein the composite further comprises one or more of a coupling agent, an adhesion promoter, and a scorch retarder;
preferably, the coupling agent is 0-4 parts, and more preferably 0-3 parts; still preferably, the coupling agent is one or more of bis- (triethoxysilane) propyl tetrasulfide (TESPT), bis- (triethoxysilane) propyl disulfide Octyl Triethoxysilane (OTES) or mercaptosilanes;
preferably, the adhesion promoter is 1.0 to 12 parts, more preferably 2.0 to 7.0 parts; still more preferably, the adhesion promoter is one or more of hexamethoxymethyl melamine, a substance containing hexamethoxymethyl melamine as an active ingredient, hexamethylenetetramine, a substance containing hexamethylenetetramine as an active ingredient, cobalt organic acid, nickel organic acid, resorcinol resin;
preferably, 0-1.0 part of scorch retarder, and more preferably 0.1-0.4 part; still more preferably, the scorch retarder is a thioimide, preferably CTP.
5. A tire wirecord fabric composite according to claim 1 or 2, wherein the anti-aging agent is 1.0-7.0 parts, preferably 2.0-5.0 parts; 1-12 parts, preferably 6-10 parts, of an active agent; 0.3-2.0 parts, preferably 0.8-1.5 parts, of promoter; vulcanizing agent: 3 to 10 parts, preferably 4 to 7 parts.
6. A tire wirecord fabric composite material according to claim 1 or 2, wherein said anti-aging agent is one or more of a conventional anti-aging agent and a long-acting anti-aging agent; and/or the number of the groups of groups,
the active agent can be selected from the active agents in the prior art, preferably zinc oxide and stearic acid; and/or the number of the groups of groups,
the vulcanizing agent is common sulfur, insoluble sulfur and a sulfur donor, preferably insoluble sulfur, more preferably insoluble sulfur OT20; and/or the number of the groups of groups,
the accelerator is a sulfenamide accelerator, preferably one or more of NS/CZ/DZ.
7. A method of mixing a tire wirecord fabric composite material according to any one of claims 1-6, comprising the steps of:
first-stage masterbatch: setting the rotation speed of an internal mixer to 50-55rpm, adding 100 parts of rubber into the internal mixer, pressing a top plug for mixing and keeping for 25-35 seconds, adding 10-12 parts of carbon black into the top plug, pressing the top plug for mixing and keeping for 40-60 seconds, cleaning the top plug for 3-5 seconds, pressing the top plug for mixing and keeping for 20-40 seconds, discharging the rubber at the temperature of 150-160 ℃, and cooling to obtain a section of master batch;
and (3) mixing in a second stage: setting the rotation speed of an internal mixer to 45-50rpm, adding a section of masterbatch, residual carbon black, white carbon black, silicone powder and a coupling agent, pressing a top plug for mixing and keeping for 30-40 seconds, pressing the top plug for mixing to 125 ℃, lifting the top plug, adding an anti-aging agent, an activating agent and a part of adhesion promoter, pressing the top plug for mixing and keeping for 30-40 seconds, lifting the top plug for cleaning for 3-5 seconds, pressing the top plug for mixing and keeping for 15-30 seconds, discharging rubber at 145-155 ℃, and cooling to obtain a second-section mixing material;
and (3) mixing in a third section: setting the rotation speed of an internal mixer to 20-30rpm, adding two-stage mixed rubber, the residual adhesion promoter, the vulcanizing agent, the accelerator and the scorch retarder, pressing a top bolt, mixing and keeping for 20-30 seconds, lifting the top bolt, cleaning for 3-5 seconds, pressing the top bolt, mixing and keeping for 15-30 seconds, discharging rubber at the temperature of 100-110 ℃, and cooling to obtain the final rubber.
8. Use of a composite material according to any one of claims 1 to 6 for the preparation of a tire wirecord.
9. A tire wirecord comprising steel filaments and a composite material according to any one of claims 1 to 6.
10. A tire employing the wirecord of claim 9.
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| CN202310775314.8A CN116731405B (en) | 2023-06-28 | 2023-06-28 | Tire cord fabric sizing composition, mixing method thereof and all-steel radial tire |
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| CN202310775314.8A CN116731405B (en) | 2023-06-28 | 2023-06-28 | Tire cord fabric sizing composition, mixing method thereof and all-steel radial tire |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132400A (en) * | 2009-12-25 | 2011-07-07 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| CN105504544A (en) * | 2015-12-31 | 2016-04-20 | 珠海云智新材料科技有限公司 | Acid-resisting low-compression permanent set rubber composite material and preparing method |
| CN114381045A (en) * | 2020-10-20 | 2022-04-22 | 双钱集团上海轮胎研究所有限公司 | High-performance cord fabric rubber for tires and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011132400A (en) * | 2009-12-25 | 2011-07-07 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| CN105504544A (en) * | 2015-12-31 | 2016-04-20 | 珠海云智新材料科技有限公司 | Acid-resisting low-compression permanent set rubber composite material and preparing method |
| CN114381045A (en) * | 2020-10-20 | 2022-04-22 | 双钱集团上海轮胎研究所有限公司 | High-performance cord fabric rubber for tires and preparation method thereof |
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