CN114437417A - High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire - Google Patents
High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire Download PDFInfo
- Publication number
- CN114437417A CN114437417A CN202210150177.4A CN202210150177A CN114437417A CN 114437417 A CN114437417 A CN 114437417A CN 202210150177 A CN202210150177 A CN 202210150177A CN 114437417 A CN114437417 A CN 114437417A
- Authority
- CN
- China
- Prior art keywords
- parts
- cnt
- rubber
- rubber composition
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 55
- 239000005060 rubber Substances 0.000 title claims abstract description 55
- 239000000203 mixture Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000006229 carbon black Substances 0.000 claims abstract description 30
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 24
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 21
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 21
- 229920001194 natural rubber Polymers 0.000 claims abstract description 21
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 19
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 19
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 14
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 9
- 229920005610 lignin Polymers 0.000 claims abstract description 6
- 239000002041 carbon nanotube Substances 0.000 claims description 62
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 59
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 59
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 30
- 230000003712 anti-aging effect Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 6
- 239000007799 cork Substances 0.000 claims description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 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
- 238000007670 refining Methods 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 2
- CSIJXJQDPBJLMG-UHFFFAOYSA-N [Nd].C=CC=C Chemical compound [Nd].C=CC=C CSIJXJQDPBJLMG-UHFFFAOYSA-N 0.000 claims description 2
- MSOUPGALSMOJRB-UHFFFAOYSA-N [Ni].C=CC=C Chemical compound [Ni].C=CC=C MSOUPGALSMOJRB-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims description 2
- 229910052740 iodine Inorganic materials 0.000 claims description 2
- 239000011630 iodine Substances 0.000 claims description 2
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 2
- 239000004200 microcrystalline wax Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 13
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000001993 wax Substances 0.000 description 8
- 238000004898 kneading Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 6
- 239000012190 activator Substances 0.000 description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 4
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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 tires, in particular to a high-performance tread rubber composition special for electric buses, a preparation method thereof and a prepared tire. The high-performance tread rubber composition special for the electric buses comprises the following components in parts by weight based on 100 parts of the total weight of raw rubber: 50-80 parts of natural rubber, 20-50 parts of butadiene rubber and/or styrene-butadiene rubber, 45-60 parts of carbon black, 0.2-5 parts of CNT and a CNT dispersant (the ratio of the CNT to the CNT dispersant is 1: 8-5: 1); wherein, the CNT dispersant is one or more of lignin, sodium lignosulfonate and other lignin derivatives. The invention firstly pre-disperses carbon black and crude rubber to prepare carbon black master batch, and then adds pre-dispersed CNT to prepare CNT carbon black master batch. The tread rubber composition prepared by the method has the characteristics of high wear resistance, wet skid resistance and high gripping force, and the service life of the electric bus tire is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of rubber tires, in particular to a high-performance tread rubber composition special for electric buses, a preparation method thereof and a prepared tire.
Background
The mass of the electric automobile is about 20% larger than that of a fuel automobile with the same size under the common condition, so that the braking distance of the electric automobile is prolonged, and higher requirements on the abrasion resistance of tires are provided; meanwhile, the braking performance, particularly the braking performance on a wet road surface, is an important factor related to the running safety of tires, so that the electric automobile is required to have high wet skid resistance; the lag of the development of the battery technology enables the charging capacity of the electric automobile to be limited, the single charging duration is short, and higher requirements are provided for reducing the power consumption of the battery on the rolling resistance of the tire; the motor has large initial torque, the vehicle is accelerated quickly, the tire is required to have better gripping performance, and the tire is prevented from slipping, so that the bus electric vehicle tire is required to obtain good balance among rolling resistance, gripping performance and wear resistance.
Disclosure of Invention
The invention provides a high-performance tread rubber composition special for electric buses, aiming at solving the problem of balance among rolling resistance, gripping performance and wear resistance of electric bus tires. Further, the wet skid resistance of the tire is improved by adding the butadiene-styrene rubber, the wear resistance of the tire is improved by adding the butadiene rubber, and the tire with high wear resistance, wet skid resistance and high gripping power is finally prepared.
In order to achieve the above object, the present invention adopts the following technical solutions:
the high-performance tread rubber composition special for the electric buses comprises the following components in parts by weight based on 100 parts of the total weight of raw rubber:
50-80 parts of natural rubber,
20 to 50 parts of butadiene rubber and/or styrene-butadiene rubber,
45-60 parts of carbon black,
0.2 to 5 parts of CNT (carbon nanotube),
the ratio of the CNT dispersant CNT to the CNT dispersant is 1: 8-5: 1;
wherein, the CNT dispersant is one or more of lignin, sodium lignosulfonate and other lignin derivatives.
Preferably, the PRI of the natural rubber is more than or equal to 40, the ash content is less than or equal to 0.80 percent, and the volatile matter is less than or equal to 1 percent; the total weight of the styrene butadiene rubber and the butadiene rubber is more than or equal to 20 parts.
Preferably, the raw rubber adopts natural rubber, butadiene rubber and styrene butadiene rubber, wherein the natural rubber is 55-65 parts, the butadiene rubber is 15-25 parts, and the styrene butadiene rubber is 15-25 parts.
Preferably, the butadiene rubber is one of neodymium butadiene rubber or nickel butadiene rubber, wherein the content of a 1, 4-cis structure is not less than 98%; the styrene-butadiene rubber has styrene content of 10-38% and vinyl content of 39-68%.
Preferably, the carbon black has a particle size of 10-30 nm, an iodine absorption value of 90-160 g/kg, a specific surface area of 89-137 m/g, a coloring strength of 104-135%, and an amount of 47-55 parts by weight.
Preferably, the CNT has an average diameter of 4-10 nm, an average length of 10-35 μm, and a specific surface area of 220-320/m for carrying out thin film growing.
Preferably, the ratio of the CNTs to the CNT dispersant is 1: 3-3: 1.
preferably, the rubber composition further comprises the following components in parts by weight:
1-11 parts of an activating agent,
0.85 to 3.2 parts of microcrystalline wax,
0.5 to 4.5 parts of an anti-aging agent,
0.8-5.6 parts of a vulcanizing agent.
Further, the present application also provides a method for preparing the tread rubber composition, which comprises the following steps:
(1) pre-dispersion of CNTs and CNT dispersant: pre-dispersing CNT and a CNT dispersant to be as uniform as possible to prepare a CNT pre-dispersion product;
(2) preparation of CNT carbon black masterbatch: the rotating speed of a rotor is 35-55 rpm, the top plug pressure is 5.5MPa, the natural rubber, the butadiene rubber and/or the styrene-butadiene rubber and the carbon black are added into an internal mixer for mixing for 30-50 seconds, then the plug is lifted, the CNT pre-dispersion prepared in the step (1) is added, the mixing is carried out for 20-30 seconds, the plug is lifted, the residence time is 7-10 seconds, the plug pressing and the mixing are carried out for 25-40 seconds, and the CNT carbon black master batch is obtained;
(3) first-stage mixing: adding the prepared CNT carbon black master batch, an anti-aging agent, zinc oxide and stearic acid into an internal mixer for mixing for 30-50 seconds, rising the cork, staying for 7-10 seconds, pressing the cork, and mixing for 25-40 seconds to obtain a section of master batch;
(4) parking: placing the section of the masterbatch prepared in the step (3) in air, naturally cooling to room temperature, and standing for 8 hours;
(5) and (3) final refining: and (3) sequentially adding a section of master batch, sulfur and an accelerant into an internal mixer at a rotor rotating speed of 18-30 rpm and a plug-up pressure of 4.5MPa, mixing for 35-50 seconds, raising the plug, pressing the plug, mixing for 25-40 seconds, raising the plug, pressing the plug, and mixing to 95-115 ℃ for rubber discharge to obtain the rubber composition.
Further, the application also provides a high-performance electric bus special tire, and the tread of the tire is prepared by adopting the rubber composition and the preparation method.
The invention has the technical effects that: the CNT-carbon black masterbatch is prepared by using the carbon nano tube, so that the modulus is improved, the sliding abrasion is reduced, the heat generation is reduced by adding the CNT dispersing agent, the wear resistance is obviously improved, the wet-skid resistance is improved by adding the butadiene-styrene rubber, and the wear resistance is improved by adding the butadiene rubber. Finally, the tire with high wear resistance, wet skid resistance and high gripping force is prepared.
Detailed Description
The present invention is further illustrated below with reference to specific examples, but the scope of the present invention is not limited by these examples.
Example 1
The high-performance tread rubber composition special for the electric buses comprises the following raw materials in parts by weight: 60 parts of natural rubber, 20 parts of butadiene, 20 parts of butylbenzene, 5.5 parts of activating agent, 2.5 parts of vulcanizing agent, 2.5 parts of anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, 1 part of CNT, 0.5 part of sodium lignosulfonate and 0.25 part of antiscorching agent CTP.
The mixing method of the tread rubber composition special for the high-performance electric buses comprises the following steps:
(1) pre-dispersion of CNT and sodium lignosulfonate: the carbon nano tube and the sodium lignosulfonate are pre-dispersed and as uniform as possible to prepare a CNT pre-dispersion product.
(2) Preparation of CNT carbon black masterbatch: and (3) at the rotor speed of 45rpm and the plug-up pressure of 5.5MPa, firstly adding the natural rubber, the butadiene rubber, the styrene butadiene rubber and the carbon black into an internal mixer for mixing for 40 seconds, then carrying out plug lifting, adding the carbon nano tube dispersion product prepared in the step one, mixing for 25 seconds, carrying out plug lifting, staying for 8 seconds, carrying out plug pressing, and mixing for 30 seconds to obtain the CNT carbon black master batch.
(3) First-stage mixing: and adding the prepared CNT carbon black master batch, the anti-aging agent, the zinc oxide and the stearic acid into an internal mixer for mixing for 40 seconds, raising the cork, staying for 8 seconds, pressing the cork, and mixing for 30 seconds to obtain a section of master batch.
(4) Parking: and (3) placing the prepared primary rubber in the air, naturally cooling to room temperature, and standing for 8 h.
(5) And (3) final refining: and (3) sequentially adding a section of master batch, sulfur and an accelerant into an internal mixer at a rotor rotating speed of 25rpm and an upper plug pressure of 4.5MPa, mixing for 40 seconds, raising the plug, pressing the plug, mixing for 35 seconds, raising the plug, pressing the plug, and mixing to 110 ℃ for rubber discharge to obtain the high-performance special tread rubber composition for the electric buses.
Example 2
The high-performance tread rubber composition special for the electric buses comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of butadiene, 5.5 parts of an activator, 2.5 parts of a vulcanizing agent, 2.5 parts of an anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, 1 part of CNT, 0.5 part of sodium lignosulfonate and 0.25 part of an anti-scorching agent CTP.
The method for kneading the tread rubber composition was as described in example 1.
Example 3
The high-performance tread rubber composition special for the electric buses comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of butylbenzene, 5.5 parts of activating agent, 2.5 parts of vulcanizing agent, 2.5 parts of anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, 1 part of CNT, 0.5 part of sodium lignosulfonate and 0.25 part of anti-scorching agent CTP.
The method for kneading the tread rubber composition was as described in example 1.
Comparative example 1
The tread rubber composition special for the electric bus comprises the following raw materials in parts by weight: 60 parts of natural rubber, 20 parts of butadiene, 20 parts of butylbenzene, 5.5 parts of activating agent, 2.5 parts of vulcanizing agent, 2.5 parts of anti-aging agent, 1.5 parts of protective wax, N13453 parts of carbon black and 0.25 part of anti-scorching agent CTP.
The kneading method of the tread rubber composition was the same as that described in example 1 except that the CNT and the sodium lignin sulfonate were not added.
Comparative example 2
The tread rubber composition special for the electric bus comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of butadiene, 5.5 parts of an activator, 2.5 parts of a vulcanizing agent, 2.5 parts of an anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, and 0.25 part of an anti-scorching agent CTP.
The kneading method of the tread rubber composition was the same as that described in example 1 except that the CNT and the sodium lignin sulfonate were not added.
Comparative example 3
The tread rubber composition special for the electric bus comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of styrene-butadiene rubber, 5.5 parts of an activating agent, 2.5 parts of a vulcanizing agent, 2.5 parts of an anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, and 0.25 part of a scorch retarder CTP.
The kneading method of the tread rubber composition was the same as that described in example 1 except that the CNT and the sodium lignin sulfonate were not added.
Comparative example 4
The tread rubber composition special for the electric bus comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of butadiene, 5.5 parts of an activator, 2.5 parts of a vulcanizing agent, 2.5 parts of an anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, 1 part of CNT and 0.25 part of an anti-scorching agent CTP.
The mixing method of the tread rubber composition was the same as that described in example 1 except that sodium lignosulfonate and CNT pre-dispersion were not added.
Comparative example 5
The tread rubber composition special for the electric bus comprises the following raw materials in parts by weight: 60 parts of natural rubber, 40 parts of butadiene, 5.5 parts of an activator, 2.5 parts of a vulcanizing agent, 2.5 parts of an anti-aging agent, 1.5 parts of protective wax, 13453 parts of carbon black N, 2.5 parts of 40% CNT master batch and 0.25 part of an anti-scorching agent CTP. Wherein, the 40% CNT master batch is pre-dispersed master batch with 60% of natural rubber and 40% of CNT.
The above-described method for kneading the tread rubber composition, in which the CNT and the natural rubber are predispersed, and other kneading processes are the same as those described in example 1.
The test data for examples 1-3 and comparative examples 1-5 described above are set forth in Table 1.
TABLE 1 Performance data
| Test items | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
| 50% definite elongation | 2.3 | 2.2 | 2.3 | 1.8 | 1.7 | 1.8 | 2.3 | 1.8 |
| tanδ/60℃ | 0.2019 | 0.2121 | 0.22045 | 0.1911 | 0.1812 | 0.2120 | 0.2465 | 0.2314 |
| Akron abrasion cm3/1.61km | 0.1376 | 0.1243 | 0.1645 | 0.1765 | 0.1486 | 0.19356 | 0.1453 | 0.1412 |
| Roller abrasion fingerA plurality of | 265.7 | 478.5 | 219.8 | 215.7 | 356.3 | 187.6 | 362.3 | 367.5 |
According to the invention, the CNT is pre-dispersed by adopting the carbon nano tube dispersing agent, and then the tire with high wear resistance, wet skid resistance and high gripping force is prepared by adopting the method for preparing the CNT-carbon black masterbatch, and as can be seen from the embodiment 1 and the comparative example 1, the wear resistance of the adopted carbon nano tube is improved by improving the modulus, the wet skid resistance of the tire can be improved by adopting the butadiene-styrene rubber, and the wear resistance of the tire tread is improved by adopting the butadiene-styrene rubber. Thereby improving the wet skid resistance and the sliding and abrasion resistance of the tread rubber composition while improving the wear resistance. As can be seen from the example 2 and the comparative examples 4 and 5, the heat generation of the CNT is not greatly improved by pre-dispersing and adding, and the abrasion resistance is not obviously improved; the CNT master gel is added, and the fixed stretching improvement effect disappears. Compared with the prior art, the tire prepared by the invention has the characteristics of high wear resistance, wet skid resistance and high gripping force, the wear resistance of the electric bus tire is greatly improved, and the service life of the electric bus tire is prolonged.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in 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 high-performance tread rubber composition special for the electric buses is characterized in that the mixing formula of the rubber composition comprises the following components in parts by weight based on 100 parts of the total weight of raw rubber:
50-80 parts of natural rubber,
20 to 50 parts of butadiene rubber and/or styrene-butadiene rubber,
45-60 parts of carbon black,
0.2 to 5 parts of CNT (carbon nanotube),
the ratio of the CNT dispersant CNT to the CNT dispersant is 1: 8-5: 1;
wherein, the CNT dispersant is one or more of lignin, sodium lignosulfonate and other lignin derivatives.
2. The high-performance tread rubber composition special for electric buses as claimed in claim 1, wherein PRI of the natural rubber is more than or equal to 40, ash content is less than or equal to 0.80%, and volatile matter is less than or equal to 1%; the total weight of the styrene butadiene rubber and the butadiene rubber is more than or equal to 20 parts.
3. The tread rubber composition special for the high-performance electric buses as claimed in claim 1 or 2, wherein the raw rubber is composed of 55-65 parts of natural rubber, 15-25 parts of butadiene rubber and 15-25 parts of styrene butadiene rubber.
4. The tread rubber composition special for the high-performance electric buses is characterized in that the butadiene rubber is one of neodymium butadiene rubber or nickel butadiene rubber, wherein the content of a 1, 4-cis structure is not less than 98%; the styrene-butadiene rubber has styrene content of 10-38% and vinyl content of 39-68%.
5. The tread rubber composition according to claim 1, wherein the carbon black has a particle size in a range of 10 to 30 nm, an iodine absorption value of 90 to 160 g/kg, a specific surface area of 89 to 137 m/g, a coloring strength of 104 to 135%, and an amount in parts by weight of 47 to 55 parts.
6. The special tread rubber composition for high-performance electric buses as claimed in claim 1, wherein the CNT has an average pipe diameter of 4-10 nm, an average length of 10-35 μm, and a specific surface area of 220-320/m for thin film transmission-1。
7. The high-performance tread rubber composition for electric buses as claimed in claim 1, wherein the ratio of CNT and CNT dispersant is 1: 3-3: 1.
8. the high-performance tread rubber composition for electric buses as claimed in claim 1, wherein the rubber composition further comprises the following components in parts by weight:
1-11 parts of an activating agent,
0.85 to 3.2 parts of microcrystalline wax,
0.5 to 4.5 parts of an anti-aging agent,
0.8-5.6 parts of a vulcanizing agent.
9. A method for producing the tread rubber composition of any one of claims 1 to 8, comprising the steps of:
(1) pre-dispersion of CNTs and CNT dispersant: pre-dispersing CNT and a CNT dispersant to be as uniform as possible to prepare a CNT pre-dispersion product;
(2) preparation of CNT carbon black masterbatch: the rotating speed of a rotor is 35-55 rpm, the top plug pressure is 5.5MPa, the natural rubber, the butadiene rubber and/or the styrene-butadiene rubber and the carbon black are added into an internal mixer for mixing for 30-50 seconds, then the plug is lifted, the CNT pre-dispersion prepared in the step (1) is added, the mixing is carried out for 20-30 seconds, the plug is lifted, the residence time is 7-10 seconds, the plug pressing and the mixing are carried out for 25-40 seconds, and the CNT carbon black master batch is obtained;
(3) first-stage mixing: adding the prepared CNT carbon black master batch, an anti-aging agent, zinc oxide and stearic acid into an internal mixer for mixing for 30-50 seconds, rising the cork, staying for 7-10 seconds, pressing the cork, and mixing for 25-40 seconds to obtain a section of master batch;
(4) parking: placing the section of the masterbatch prepared in the step (3) in air, naturally cooling to room temperature, and standing for 8 hours;
(5) and (3) final refining: and (3) sequentially adding a section of master batch, sulfur and an accelerant into an internal mixer at a rotor rotating speed of 18-30 rpm and a plug-up pressure of 4.5MPa, mixing for 35-50 seconds, raising the plug, pressing the plug, mixing for 25-40 seconds, raising the plug, pressing the plug, and mixing to 95-115 ℃ for rubber discharge to obtain the rubber composition.
10. A high-performance electric bus tire, which is characterized in that the tread of the tire is prepared by the rubber composition of claims 1-8 and the preparation method of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210150177.4A CN114437417A (en) | 2022-02-18 | 2022-02-18 | High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210150177.4A CN114437417A (en) | 2022-02-18 | 2022-02-18 | High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114437417A true CN114437417A (en) | 2022-05-06 |
Family
ID=81374306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210150177.4A Pending CN114437417A (en) | 2022-02-18 | 2022-02-18 | High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114437417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117106239A (en) * | 2023-07-28 | 2023-11-24 | 三浦橡胶（无锡）有限公司 | Soft tread rubber and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104513410A (en) * | 2013-09-30 | 2015-04-15 | 山东大展纳米材料有限公司 | Preparation method of pre-dispersed carbon nano-tube rubber masterbatches |
| CN107400266A (en) * | 2017-09-04 | 2017-11-28 | 四川远星橡胶有限责任公司 | The tread mix formula and preparation method of a kind of high abrasion small giant tire |
| CN108609611A (en) * | 2018-04-12 | 2018-10-02 | 华南理工大学 | The aqueous dispersions and preparation method thereof of the Environment-friendlycarbon carbon nanotube of high stability |
| JP2019052275A (en) * | 2017-09-19 | 2019-04-04 | 三菱ケミカル株式会社 | Carbon nanotube/carbon black/rubber composite and production method of the same |
| CN113652011A (en) * | 2021-07-05 | 2021-11-16 | 中策橡胶集团有限公司 | Low-heat-generation high-heat-conductivity tread rubber composition, mixing method thereof and tire |
| CN113999437A (en) * | 2021-11-23 | 2022-02-01 | 彤程化学（中国）有限公司 | Composition for preparing tire tread, rubber material and preparation method thereof, and tire |
-
2022
- 2022-02-18 CN CN202210150177.4A patent/CN114437417A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104513410A (en) * | 2013-09-30 | 2015-04-15 | 山东大展纳米材料有限公司 | Preparation method of pre-dispersed carbon nano-tube rubber masterbatches |
| CN107400266A (en) * | 2017-09-04 | 2017-11-28 | 四川远星橡胶有限责任公司 | The tread mix formula and preparation method of a kind of high abrasion small giant tire |
| JP2019052275A (en) * | 2017-09-19 | 2019-04-04 | 三菱ケミカル株式会社 | Carbon nanotube/carbon black/rubber composite and production method of the same |
| CN108609611A (en) * | 2018-04-12 | 2018-10-02 | 华南理工大学 | The aqueous dispersions and preparation method thereof of the Environment-friendlycarbon carbon nanotube of high stability |
| CN113652011A (en) * | 2021-07-05 | 2021-11-16 | 中策橡胶集团有限公司 | Low-heat-generation high-heat-conductivity tread rubber composition, mixing method thereof and tire |
| CN113999437A (en) * | 2021-11-23 | 2022-02-01 | 彤程化学（中国）有限公司 | Composition for preparing tire tread, rubber material and preparation method thereof, and tire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117106239A (en) * | 2023-07-28 | 2023-11-24 | 三浦橡胶（无锡）有限公司 | Soft tread rubber and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113652011A (en) | Low-heat-generation high-heat-conductivity tread rubber composition, mixing method thereof and tire | |
| CN112812388A (en) | Low-temperature-resistant and high-wet-skid-resistance snow tire tread rubber and preparation method thereof | |
| CN110358156B (en) | Tire tread rubber and preparation method thereof | |
| WO2022073488A1 (en) | High wear resistance all-steel radial tire tread rubber | |
| CN113652012A (en) | Low-heat-generation high-heat-conductivity tire base rubber composition, mixing method thereof and tire | |
| CN114921002B (en) | Winter tire tread rubber with hard lamellar structure metal salt, mixing method thereof and tire | |
| CN113896965A (en) | White carbon black filled tread rubber composition, mixing method and wear-resistant tire | |
| CN114437417A (en) | High-performance tread rubber composition special for electric buses, preparation method thereof and prepared tire | |
| CN113462049B (en) | Rubber composition for tread and preparation method thereof | |
| CN114133641A (en) | Tread rubber composite material for new energy vehicle and preparation method and application thereof | |
| JP2009127001A (en) | Rubber composition for base tread | |
| CN110591177A (en) | Formula and preparation process of all-steel tread with high wear resistance and long mileage | |
| CN112980065B (en) | Rubber composite material and preparation process and application thereof | |
| CN113736152A (en) | Low-heat-generation low-resistance tire side rubber composition, mixing method thereof and low-rolling-resistance tire | |
| CN114656699A (en) | Low rolling resistance and high grip ground tread rubber compound composition, mixing method thereof and tire | |
| CN114835959A (en) | Ultralow rolling resistance rubber composition for four-season tire, mixing method thereof and tire | |
| CN113817234B (en) | Tire tread rubber composition, mixing method thereof and low rolling resistance all-steel radial tire | |
| CN116178805B (en) | Low-heat-generation tread rubber composition, mixing method thereof and low-heat-generation tire | |
| CN113185760B (en) | Functionalized nano-epoxy isoprene rubber and application thereof in aircraft tires | |
| CN112210134B (en) | Automobile tire tread composition and manufacturing method thereof | |
| CN113667191B (en) | Low-hardness and low-viscosity tread rubber composition, mixing method thereof and tire | |
| CN113845702B (en) | Low-heat-generation tread rubber for all-steel giant engineering radial tire for coal mine transportation and preparation method thereof | |
| CN113831616B (en) | Heat-treated triazinyl graphdiyne-reinforced vulcanized rubber and preparation method and application thereof | |
| CN117964952A (en) | Graphene rubber composition for tire tread and preparation method thereof | |
| CN115678122A (en) | Tread rubber of low-heat-generation tire, preparation method and application thereof, and low-heat-generation truck radial tire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220506 |
|
| RJ01 | Rejection of invention patent application after publication |