CN117050397A - High-viscosity aging-resistant engineering tire belt ply rubber and preparation method thereof - Google Patents
High-viscosity aging-resistant engineering tire belt ply rubber and preparation method thereof Download PDFInfo
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- CN117050397A CN117050397A CN202311123372.9A CN202311123372A CN117050397A CN 117050397 A CN117050397 A CN 117050397A CN 202311123372 A CN202311123372 A CN 202311123372A CN 117050397 A CN117050397 A CN 117050397A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 46
- 230000032683 aging Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims abstract description 19
- 239000006229 carbon black Substances 0.000 claims abstract description 18
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 15
- 229920001194 natural rubber Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 239000011593 sulfur Substances 0.000 claims abstract description 10
- 238000004073 vulcanization Methods 0.000 claims abstract description 10
- 239000011787 zinc oxide Substances 0.000 claims abstract description 10
- 150000001868 cobalt Chemical class 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 21
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 12
- WEZJBAOYGIDDLB-UHFFFAOYSA-N cobalt(3+);borate Chemical compound [Co+3].[O-]B([O-])[O-] WEZJBAOYGIDDLB-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical group [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 4
- 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 claims description 3
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical group NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 2
- 241000208125 Nicotiana Species 0.000 claims description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 2
- 101100364280 Oryza sativa subsp. japonica RSS3 gene Proteins 0.000 claims description 2
- 101100478972 Oryza sativa subsp. japonica SUS3 gene Proteins 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- ODUCDPQEXGNKDN-UHFFFAOYSA-N nitroxyl Chemical compound O=N ODUCDPQEXGNKDN-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
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000032798 delamination Effects 0.000 abstract description 3
- 239000011800 void material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 8
- 238000004513 sizing Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical group OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 229910001429 cobalt ion Inorganic materials 0.000 description 3
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- INPLXZPZQSLHBR-UHFFFAOYSA-N cobalt(2+);sulfide Chemical compound [S-2].[Co+2] INPLXZPZQSLHBR-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- LLMLGZUZTFMXSA-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzenethiol Chemical compound SC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl LLMLGZUZTFMXSA-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- CHSBUVXZAGJOFK-UHFFFAOYSA-L disodium;dioxido-bis(sulfanylidene)-$l^{6}-sulfane Chemical compound [Na+].[Na+].[O-]S([O-])(=S)=S CHSBUVXZAGJOFK-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 238000003878 thermal aging 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
- 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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-viscosity aging-resistant engineering tire belt ply adhesive and a preparation method thereof, and belongs to the technical field of tire belt ply adhesives. The technical proposal is as follows: the adhesive comprises the following components in parts by weight: 100 parts of natural rubber, 45-55 parts of carbon black, 6-10 parts of zinc oxide, 0.3-0.6 part of stearic acid, 2-3 parts of an anti-aging agent, 1-2 parts of tackifying resin, 0.8-1.4 parts of cobalt salt adhesive, 0.1-0.2 part of peptizer, 5-8 parts of insoluble sulfur, 1-2 parts of vulcanization stabilizer, 1-1.5 parts of accelerator and 0.15-0.3 part of scorch retarder. The belt ply rubber prepared by the invention has high durability, tear resistance and adhesive property, so that the problem of tire shoulder void delamination damage is solved, and the service life of the tire is prolonged.
Description
Technical Field
The invention relates to the technical field of tire belt ply rubber, in particular to high-viscosity aging-resistant engineering tire belt ply rubber and a preparation method thereof.
Background
For the mining engineering tire, the size is larger, and the tread thickness is far beyond TBR, so that heat generated in the tire is difficult to dissipate in the running process of the tire, the temperature in the tire is higher, and the performance of the rubber material is greatly tested. Particularly, the belt layer part is positioned at the central position inside the tire, heat accumulation is difficult to discharge, the belt layer part is in a high-temperature state for a long time, and each performance of rubber materials is rapidly reduced, so that the tire shoulder is free, delaminated and damaged, and the use of the tire is affected. Chinese patent No. CN109749146B discloses a low heat generation rubber composition for a tire steel belt layer, comprising the following raw materials in parts by weight: 100 parts of natural rubber, 40-60 parts of carbon black, 5-15 parts of white carbon black, 1-1.5 parts of an anti-aging agent 4020, 0.5-1 part of an anti-aging agent RD, 7-9 parts of zinc oxide, 1-1.5 parts of stearic acid, 0.5-1 part of cobalt salt, 4-5 parts of an adhesive RA-65, 4-5 parts of insoluble sulfur, 0.5-3 parts of an accelerator DZ and 1-4 parts of a resin with a structural formula (I), wherein alkoxy in the resin can chemically react with hydroxyl on the surface of the white carbon black, so that the dispersion performance of a filler is improved, mercapto in the structure can chemically react with rubber in the vulcanization process, heat generation of a belt layer in the use process is reduced, the ageing adhesive force of the rubber material can be improved, the durability of the tire is ensured, and the service life of the tire is prolonged. Therefore, developing belt compounds with higher tack and aging and fatigue resistance is still an important research direction to solve the shoulder problem of tires.
Disclosure of Invention
The invention aims to solve the technical problems that: the preparation method has the advantages that the defects of the prior art are overcome, the high-viscosity aging-resistant engineering tire belt rubber and the preparation method thereof are provided, and the prepared belt rubber has high durability, tear resistance and adhesive property, so that the problem of tire shoulder-air delamination damage is solved, and the service life of the tire is prolonged.
The technical scheme of the invention is as follows:
on the one hand, the invention provides a high-viscosity aging-resistant engineering tire belt ply rubber, which comprises the following components in parts by weight: 100 parts of natural rubber, 45-55 parts of carbon black, 6-10 parts of zinc oxide, 0.3-0.6 part of stearic acid, 2-3 parts of an anti-aging agent, 1-2 parts of tackifying resin, 0.8-1.4 parts of cobalt salt adhesive, 0.1-0.2 part of peptizer, 5-8 parts of insoluble sulfur, 1-2 parts of vulcanization stabilizer, 1-1.5 parts of accelerator and 0.15-0.3 part of scorch retarder.
Preferably, the natural rubber is tobacco flake rubber RSS3#.
Preferably, the carbon black is an N220 carbon black or an N326 carbon black.
Preferably, the antioxidants are p-phenylenediamine antioxidants 4020 and ketoamine antioxidants RD.
Preferably, the tackifying resin is an alkylphenol tackifying resin TYC-0412.
Preferably, the cobalt salt binder is an acetylated cobalt borate.
Preferably, the peptizer is a mixture peptizer SJ-103 of pentachlorothiophenol plus an activator and a dispersant.
Preferably, the insoluble sulfur is OT10 or OT20; the accelerator is sulfenamide accelerator DZ; the scorch retarder is high-activity scorch retarder CTP.
Preferably, the vulcanization stabilizer is disodium hexamethylene-1, 6-dithiosulfate.
On the other hand, the invention provides a preparation method of the high-viscosity aging-resistant engineering tire belt ply rubber, which comprises the following steps:
s1 one-stage mixing
Adding natural rubber and peptizer into an internal mixer in advance for plasticating to obtain plasticated natural rubber, adding the plasticated natural rubber and part of carbon black into the internal mixer for mixing for 30-35s, adding tackifying resin, stearic acid and part of zinc oxide, mixing at the rotating speed of 37-44rpm, carrying out lump extraction and lump pressing at intervals of 30-35s, discharging rubber and blanking when the temperature of the rubber reaches 150-155 ℃, standing for 4-6h at room temperature to obtain cooled primary master batch, and carrying out secondary mixing;
s2 two-stage mixing
Synchronously adding the primary master batch in the step S1, the residual carbon black, the anti-aging agent and the cobalt salt adhesive into an internal mixer, mixing at the rotating speed of 35-40rpm, extracting lump and pressing lump once every 30-35S, discharging glue and falling sheets when the temperature of the glue reaches 150-155 ℃, placing for 4-6 hours at room temperature to obtain cooled secondary master batch, returning the secondary master batch, placing for 4-6 hours for cooling, and finally refining;
s3 final refining
And (3) putting the two-stage master batch in the step (S2), insoluble sulfur, residual zinc oxide, a vulcanization stabilizer, an accelerator and a scorch retarder into an internal mixer, mixing at a rotating speed of 26-29rpm, sequentially carrying out primary extraction and lump pressing at intervals of 30-35S, 20-25S and 20-25S, discharging rubber and discharging sheets when the temperature of the rubber reaches 95-100 ℃, and standing and cooling to obtain the engineering tire belt rubber.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, two raw materials, namely hexamethylene-1, 6-dithiosulfuric acid disodium salt and acetylated cobalt borate, are simultaneously added into the belt rubber material, and the durability, tear resistance and adhesive property of the rubber material are obviously improved by utilizing the synergistic effect of the two raw materials. Particularly, after the middle use period of the tire, the belt rubber reaches a certain aging degree, the belt rubber can still keep good physical properties and bonding strength, the problems of continuous high-temperature performance reduction, belt cracking and the like of the belt part of the tire in the later use period are solved, and therefore the occurrence of phenomena such as tire shoulder empty delamination and the like is avoided, and the service life of the tire is prolonged.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention.
Examples 1 to 3 and comparative examples 1 to 3
The belt formulations of examples 1-3 and comparative examples 1-3 are shown in Table 1:
TABLE 1
The preparation method of the engineering machinery tire belt rubber of the examples 1-3 and the comparative examples 1-3 comprises the following steps:
s1 one-stage mixing
Adding natural rubber and peptizer into an internal mixer in advance for plasticating to obtain plasticated natural rubber, adding the plasticated natural rubber and 40 parts of carbon black into the internal mixer for mixing for 35s, adding tackifying resin, stearic acid and 5 parts of zinc oxide, mixing at a rotating speed of 38rpm, lifting and pressing the lump once every 30s, discharging rubber and blanking when the temperature of the rubber reaches 155 ℃, standing for 4h at room temperature to obtain cooled primary master batch, and then carrying out secondary mixing;
s2 two-stage mixing
Synchronously adding the primary master batch in the step S1, the residual carbon black, the anti-aging agent and the cobalt salt adhesive into an internal mixer, mixing at a rotating speed of 35rpm, extracting lump and pressing lump every 30S, discharging glue and falling pieces when the temperature of the glue reaches 150 ℃, standing for 4 hours at room temperature to obtain cooled secondary master batch, returning the secondary master batch, standing for 4 hours for cooling, and finally refining;
s3 final refining
And (2) putting the two-stage master batch in the step (S2), insoluble sulfur, residual zinc oxide, a vulcanization stabilizer, an accelerator and a scorch retarder into an internal mixer, mixing at a rotating speed of 28rpm, sequentially carrying out primary lifting lump pressing lump at intervals of 30S, 25S and 25S, discharging rubber and discharging the rubber when the temperature of the rubber reaches 100 ℃, placing and cooling to obtain the engineering tire belt rubber.
The engineering tire belt compounds prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to performance test, and the test results are shown in table 2:
TABLE 2
Test specimen vulcanization conditions: 145 ℃ for 60min.
Static high temperature slow tear (tear energy), test speed: 50mm/min, test temperature: 100 ℃.
As can be seen by comparing the example 3 with the comparative example 1, the hexamethylene-1, 6-dithiosulfuric acid disodium salt and the acetylated cobalt borate are added into the belt rubber material, the reversion time of the vulcanized rubber is improved by 22%, the ageing retention rate is improved by 13%, and the ageing resistance of the rubber material is obviously improved; the slow tearing and tearing performance of the sizing material can be improved by 51.5%, the growth performance of a bending crack is improved by 46%, and the tear resistance and crack resistance of the sizing material are obviously improved; the steel wire extraction force is improved by 21.6 percent, and the compression heat generation is reduced by 11.7 percent; the properties such as tensile strength, elongation at break and hardness are slightly improved.
As can be seen from a comparison of example 3 with comparative examples 2 and 3, respectively, the addition of both hexamethylene 1,6 disodium dithiosulfate and acetylated cobalt borate to the belt compound resulted in significantly better performance than the addition of only one of them alone. As can be seen from comparing comparative examples 2 and 3 with comparative example 1, the addition of one of the materials alone can bring about a reduction in other properties while improving part of the properties, and cannot meet the product use requirements.
From the performance of two materials, the acetylated cobalt borate belongs to a special metal organic matter, cobalt ions and boron on molecules of the acetylated cobalt borate are connected with organic components through oxygen molecules, and the cobalt ions can be quickly dissociated from a compound molecular body due to weak bond energy of boron-oxygen-cobalt bonds in the molecular structure of the compound; after cobalt is released rapidly, the formation rate of cobalt sulfide is greatly improved, so that the cobalt sulfide has high solubility and high activity in rubber. The generation of active borate groups is also caused by the rapid release of cobalt ions, and the borate groups are corrosion inhibitors, can prevent corrosion in rubber sizing materials and reduce corrosion in the surrounding environment of brass-plated steel wires, so that although the acetylated cobalt borate has adverse effects on the ageing resistance of the sizing materials, the corrosion resistance, the wet heat aging resistance and the thermo-oxidative aging resistance of the sizing materials are positively influenced due to the borate groups, and the bonding strength is higher, so that the ageing performance is less influenced by the reduction; and the adverse effect of the acetylated cobalt borate on the aging performance can be well compensated after the hexamethylene-1, 6-dithiosulfuric acid disodium salt is added. The hexamethylene-1, 6-dithiosulfuric acid disodium salt can be used as an adhesion promoter while being used as a heat stabilizer of a sulfur vulcanization system, so that the adhesion performance of the brass-plated steel wire framework material and the rubber material is improved, and the hexamethylene-1, 6-dithiosulfuric acid disodium salt can generate a mixed crosslinking bond with better thermal stability in the vulcanization crosslinking reaction process of the rubber material, so that the thermal stability and dynamic flexibility of the rubber material are improved, and the reduction of the physical property and the adhesive strength caused by aging and fracture of the sulfur crosslinking bond in the later use process of the rubber material is compensated, so that the thermal aging resistance of the rubber material is improved. The anti-aging performance, the anti-tearing performance and the adhesive strength of the belt rubber material can be obviously improved by adding the anti-aging performance, the anti-tearing performance and the adhesive strength, so that the problems of shoulder crack and the like caused by the damage of the belt in the using process of the tire are solved, and the service life of the tire can be effectively prolonged.
In conclusion, the invention simultaneously adds two raw materials of hexamethylene-1, 6-dithiosulfate disodium salt and acetylated cobalt borate, plays a synergistic effect while playing respective positive roles, and makes up the defect of a single material, thereby obviously improving the durability, tear resistance and adhesive property of the sizing material and achieving the aim of improving the comprehensive performance.
Claims (10)
1. The high-viscosity aging-resistant engineering tire belt ply adhesive is characterized by comprising the following components in parts by weight: 100 parts of natural rubber, 45-55 parts of carbon black, 6-10 parts of zinc oxide, 0.3-0.6 part of stearic acid, 2-3 parts of an anti-aging agent, 1-2 parts of tackifying resin, 0.8-1.4 parts of cobalt salt adhesive, 0.1-0.2 part of peptizer, 5-8 parts of insoluble sulfur, 1-2 parts of vulcanization stabilizer, 1-1.5 parts of accelerator and 0.15-0.3 part of scorch retarder.
2. The high tack aging resistant engineering tire belt of claim 1, wherein said natural rubber is a tobacco flake RSS3#.
3. The high tack aging resistant engineering tire belt of claim 1, wherein said carbon black is N220 carbon black or N326 carbon black.
4. The high-tack aging-resistant engineering tire belt compound of claim 1, wherein the aging inhibitor is a p-phenylenediamine type aging inhibitor 4020 and a ketoamine type aging inhibitor RD.
5. The high tack aging resistant engineering tire belt of claim 1, wherein said tackifying resin is alkylphenol tackifying resin TYC-0412.
6. The high tack aging resistant engineering tire belt of claim 1, wherein the cobalt salt binder is an acetylated cobalt borate.
7. The high tack aging resistant engineering tire belt compound of claim 1, wherein the peptizer is peptizer SJ-103.
8. The high tack aging resistant engineering tire belt compound of claim 1, wherein the insoluble sulfur is OT10 or OT20; the accelerator is sulfenamide accelerator DZ; the scorch retarder is high-activity scorch retarder CTP.
9. The high tack aging resistant engineering tire belt of claim 1, wherein said cure stabilizer is disodium hexamethylene-1, 6-dithiosulfate.
10. Process for the preparation of a high-tack, ageing-resistant engineering tire belt compound according to any one of claims 1 to 9, comprising the steps of:
s1 one-stage mixing
Adding natural rubber and peptizer into an internal mixer in advance for plasticating to obtain plasticated natural rubber, adding the plasticated natural rubber and part of carbon black into the internal mixer for mixing for 30-35s, adding tackifying resin, stearic acid and part of zinc oxide, mixing at the rotating speed of 37-44rpm, carrying out lump extraction and lump pressing at intervals of 30-35s, discharging rubber and blanking when the temperature of the rubber reaches 150-155 ℃, standing for 4-6h at room temperature to obtain cooled primary master batch, and carrying out secondary mixing;
s2 two-stage mixing
Synchronously adding the primary master batch in the step S1, the residual carbon black, the anti-aging agent and the cobalt salt adhesive into an internal mixer, mixing at the rotating speed of 35-40rpm, extracting lump and pressing lump once every 30-35S, discharging glue and falling sheets when the temperature of the glue reaches 150-155 ℃, placing for 4-6 hours at room temperature to obtain cooled secondary master batch, returning the secondary master batch, placing for 4-6 hours for cooling, and finally refining;
s3 final refining
And (3) putting the two-stage master batch in the step (S2), insoluble sulfur, residual zinc oxide, a vulcanization stabilizer, an accelerator and a scorch retarder into an internal mixer, mixing at a rotating speed of 26-29rpm, sequentially carrying out primary extraction and lump pressing at intervals of 30-35S, 20-25S and 20-25S, discharging rubber and discharging sheets when the temperature of the rubber reaches 95-100 ℃, and standing and cooling to obtain the engineering tire belt rubber.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117777562A (en) * | 2023-12-06 | 2024-03-29 | 泰凯英(青岛)专用轮胎技术研究开发有限公司 | Mining engineering tire carcass rubber and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117777562A (en) * | 2023-12-06 | 2024-03-29 | 泰凯英(青岛)专用轮胎技术研究开发有限公司 | Mining engineering tire carcass rubber and preparation method thereof |
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