CN110951122A - Low-rolling-resistance tire tread rubber and preparation method thereof - Google Patents
Low-rolling-resistance tire tread rubber and preparation method thereof Download PDFInfo
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- CN110951122A CN110951122A CN201911336897.4A CN201911336897A CN110951122A CN 110951122 A CN110951122 A CN 110951122A CN 201911336897 A CN201911336897 A CN 201911336897A CN 110951122 A CN110951122 A CN 110951122A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a low-rolling-resistance tire tread rubber, which relates to the field of rubber tire manufacturing and comprises the following raw materials in parts by mass: 100-120 parts of natural rubber, 30-35 parts of carbon black, 15-20 parts of high-dispersion white carbon black, 3-5 parts of silane coupling agent, 6-8 parts of tin dioxide, 3.5-5 parts of zinc oxide, 2-4 parts of stearic acid, 1.8-2.5 parts of anti-aging agent, 2-3 parts of rubber processing aid, 0.85-1 part of microcrystalline wax, 1.8-2.4 parts of accelerator and 1.4-1.6 parts of sulfur. According to the invention, the problems of easy agglomeration, increased viscosity during processing, high heat generation and easy scorching of the white carbon black with larger specific surface area in the rubber preparation process are solved by adding tin dioxide, and the prepared rubber has very low rolling resistance and higher abrasion performance and meets the requirements of tire tread rubber.
Description
Technical Field
The invention relates to the field of rubber tire manufacturing, in particular to low-rolling-resistance tire tread rubber and a preparation method thereof.
Background
With the increasing economic strength of the country, the automobile industry is developed rapidly, and automobiles become important transportation tools essential for people's life. The development of the automobile industry also promotes the continuous innovation and progress of the tire industry. With the stricter environmental regulations and the shortage of petroleum resources, how to reduce the fuel consumption of automobiles becomes a focus of attention of the automobile industry and consumers. A voluntary tire labeling system was implemented as in japan from 2010; from 11/1/2012, the european union has implemented a mandatory tire labeling regulation, with a greatly increasing global share of green tires. Against this large background, reducing tire rolling resistance is a hot topic in the tire industry. Among the three main factors which influence the fuel consumption of the automobile, namely wind resistance, tire rolling resistance and mechanical resistance, the rolling resistance of the tire accounts for about 20-30%, and the energy consumption generated by the tire rolling resistance accounts for 15% of the fuel consumption. This means that rolling resistance is reduced by 30%, and oil can be saved by about 4.5%. Among all the formulations of the compounds constituting the tire, the rolling resistance produced only by the tread formulation accounts for about 50%. The purpose of reducing the rolling resistance and the force of the tire can be achieved by adjusting the tread formula.
In the prior art, white carbon black is usually modified to reduce agglomeration of white carbon black and improve dispersibility, and other technologies are also included, for example, chinese patent 201610163679.5 discloses an ultra-low rolling resistance tire tread rubber compound, which is prepared by mixing the following materials in percentage by weight: the solution polymerized styrene-butadiene rubber comprises 1 of solution polymerized styrene-butadiene rubber, 2 of solution polymerized styrene-butadiene rubber, white carbon black, aromatic oil, a silane coupling agent, a white carbon black dispersing agent, terpene resin and an accelerator DPG. The functionalized solution-polymerized styrene-butadiene rubber is reacted with white carbon black through a silanization reaction, so that the dispersibility of the filler in a rubber matrix is improved, the Payene effect of the filler is reduced, and the aim of reducing the hysteresis loss of a rubber material is fulfilled finally.
Chinese patent 201710409066.X discloses a rubber mixing method for improving the dispersity of white carbon black-containing rubber compound, which comprises the following steps: step one, simultaneously putting rubber components, zinc oxide, stearic acid, an active agent, an adhesive, white carbon black and carbon black N220 into an internal mixer; secondly, starting an internal mixer to shear the added materials; step three, when the upper top bolt is pressed to the bottom, the upper top bolt is lifted and then a softener is added; step four, continuously carrying out pressurization and banburying; and step five, lifting the upper top bolt to remove the glue, tabletting and cooling. The patent solves the problem that the operation of common white carbon black with the PHR below reaches the required dispersion effect by improving the preparation method.
Disclosure of Invention
The invention aims to: aiming at the problems, the low-rolling-resistance tire tread rubber and the preparation method thereof are provided, the preparation method is simpler, and the prepared rubber has good wear resistance and very low rolling resistance.
The technical scheme adopted by the invention is as follows:
the low-rolling-resistance tire tread rubber is characterized by comprising the following raw materials in parts by mass: 100-120 parts of natural rubber, 30-35 parts of carbon black, 15-20 parts of high-dispersion white carbon black, 3-5 parts of silane coupling agent, 6-8 parts of tin dioxide, 3.5-5 parts of zinc oxide, 2-4 parts of stearic acid, 1.8-2.5 parts of anti-aging agent, 2-3 parts of rubber processing aid, 0.85-1 part of microcrystalline wax, 1.8-2.4 parts of accelerator and 1.4-1.6 parts of sulfur.
The smaller the particle size of the white carbon black or carbon black, the larger the surface area, and the better the reinforcing effect in the rubber. However, the carbon black production causes great environmental pollution, when the surface area of the white carbon black is too large, the ionic bond cohesion is enhanced, the white carbon black is not easy to disperse in the rubber material, the viscosity of the rubber material is increased during processing, the heat generation is high, scorching is easy, in addition, more accelerators are adsorbed, the decomposition of the accelerators is accelerated, and the vulcanization time is prolonged. The improvement point of the invention is that the tin dioxide is added into the rubber to improve the dispersibility of the white carbon black, so that the wear resistance of the rubber is improved and the rolling resistance is reduced.
Further, the specific surface area of the high-dispersion white carbon black is 200-250m2/g。
Further, the white carbon black is biomass white carbon black.
At present, the white carbon black commonly used in the tire industry is mainly prepared by taking ore silicon as a raw material, but if a large amount of ore silicon is used as the raw material to prepare the white carbon black, the consequences of high energy consumption and high pollution are necessarily generated. The method for preparing the white carbon black by taking the active ash generated after the biomass is combusted as the raw material has low energy consumption, small pollution and high product quality.
The preparation method of the low rolling resistance tire tread rubber is characterized by comprising the following steps:
(1) mixing in the first stage: adding natural rubber, a silane coupling agent, zinc oxide, stearic acid, an anti-aging agent, a rubber processing aid, microcrystalline wax, carbon black, white carbon black and tin dioxide into an internal mixer, pressing down an upper top bolt for 50s, lifting the upper top bolt for 10s, regulating the rotation speed to 20rpm/min, pressing down the upper bolt again for 20s, lifting the upper bolt for 5s, pressing down the upper bolt for the third time until the temperature of the mixture rises to 150 ℃, and stacking the mixture after extruding a rubber cooling line by a lower-layer extruder to obtain a first-section rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), sulfur and an accelerator into an internal mixer, adjusting the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt to be in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 seconds and the temperature is 110 ℃, and taking off the rubber from the internal mixer to obtain the low-rolling-resistance tire tread rubber.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the preparation method is simple, the white carbon black does not need to be modified, the problems of easy agglomeration, increased viscosity during processing, high heat generation and easy scorching of the white carbon black with larger specific surface area in the rubber preparation process are solved by adding the tin dioxide, and the prepared rubber has very low rolling resistance and higher abrasion performance and meets the requirements of tire tread rubber.
2. The biomass white carbon black is preferably adopted, and the active ash generated after the biomass is combusted is used as the raw material to prepare the white carbon black, so that the energy consumption is low, the pollution is low, and the product quality is high.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
The preparation method of the low rolling resistance tire tread rubber is characterized by comprising the following steps:
(1) mixing in the first stage: adding 100 parts of natural rubber, 3 parts of a silane coupling agent, 3.5 parts of zinc oxide, 2 parts of stearic acid, 40201.5 parts of an anti-aging agent, TYC 05472 parts of a rubber processing aid, 0.85 part of microcrystalline wax, N23430 parts of carbon black, GBQ 20015 parts of biomass white carbon black and 7 parts of tin dioxide into an internal mixer, pressing an upper plug down for 50s, lifting the upper plug up for 10s, adjusting the rotation speed to 20rpm/min, pressing the upper plug down again for 20s, lifting the upper plug up for 5s, pressing the upper plug down for the third time until the temperature of the mixture rises to 150 ℃, extruding a rubber cold line by a lower-layer extruder, and stacking to obtain a first-stage rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), 1.4 parts of sulfur, 1.6 parts of accelerator NS and 0.25 part of accelerator DPG into an internal mixer, regulating the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 s and the temperature reaches 110 ℃, and discharging the rubber from the lower part of the open mill to obtain the low rolling resistance tire tread rubber.
Example 2
The preparation method of the low rolling resistance tire tread rubber is characterized by comprising the following steps:
(1) mixing in the first stage: adding 100 parts of natural rubber, 3 parts of a silane coupling agent, 3.5 parts of zinc oxide, 2 parts of stearic acid, 40201.5 parts of an anti-aging agent, TYC 05472 parts of a rubber processing aid, 0.85 part of microcrystalline wax, N23430 parts of carbon black, GBQ 22515 parts of biomass white carbon black and 7 parts of tin dioxide into an internal mixer, pressing down an upper plug for 50s, lifting up the upper plug for 10s, adjusting the rotation speed to 20rpm/min, pressing down the upper plug again for 20s, lifting up the upper plug for 5s, pressing down the upper plug for the third time until the temperature of a mixture rises to 150 ℃, extruding out a rubber cold line by a lower-layer extruder, and stacking to obtain a first-stage rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), 1.4 parts of sulfur, 1.6 parts of accelerator NS and 0.25 part of accelerator DPG into an internal mixer, regulating the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 s and the temperature reaches 110 ℃, and discharging the rubber from the lower part of the open mill to obtain the low rolling resistance tire tread rubber.
Example 3
(1) Mixing in the first stage: adding 100 parts of natural rubber, 3 parts of a silane coupling agent, 3.5 parts of zinc oxide, 2 parts of stearic acid, 40201.5 parts of an anti-aging agent, TYC 05472 parts of a rubber processing aid, 0.85 part of microcrystalline wax, N23430 parts of carbon black, 315 parts of high-dispersion white carbon black VN and 7 parts of tin dioxide into an internal mixer, pressing down an upper top plug for 50s, lifting up the upper top plug for 10s, adjusting the rotation speed to 20rpm/min, pressing down the upper top plug again for 20s, lifting up the upper top plug for 5s, pressing down the upper top plug for the third time until the temperature of a mixture rises to 150 ℃, extruding a cold line by a lower layer extruder, and stacking to obtain a first-stage rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), 1.4 parts of sulfur, 1.6 parts of accelerator NS and 0.25 part of accelerator DPG into an internal mixer, regulating the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 s and the temperature reaches 110 ℃, and discharging the rubber from the lower part of the open mill to obtain the low rolling resistance tire tread rubber.
Example 4
(1) Mixing in the first stage: adding 100 parts of natural rubber, 3 parts of a silane coupling agent, 3.5 parts of zinc oxide, 2 parts of stearic acid, 40201.5 parts of an anti-aging agent, TYC 05472 parts of a rubber processing aid, 0.85 part of microcrystalline wax, N23430 parts of carbon black, 1165GR 15 parts of biomass white carbon black and 7 parts of tin dioxide into an internal mixer, pressing an upper top plug down for 50s, lifting the upper top plug up for 10s, adjusting the rotation speed to 20rpm/min, pressing the upper plug down again for 20s, lifting the upper plug up for 5s, pressing the upper plug down for the third time until the temperature of a mixture rises to 150 ℃, extruding a rubber cold line by a lower layer extruder, and stacking to obtain a first-stage rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), 1.4 parts of sulfur, 1.6 parts of accelerator NS and 0.25 part of accelerator DPG into an internal mixer, regulating the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 s and the temperature reaches 110 ℃, and discharging the rubber from the lower part of the open mill to obtain the low rolling resistance tire tread rubber.
Table 1 shows the properties of the rubbers obtained in the various examples:
| example 1 | Example 2 | Example 3 | Example 4 | |
| Hardness (Shao Er A) | 65 | 65 | 64 | 64 |
| Density (Mg/m)3) | 1.109 | 1.106 | 1.106 | 1.108 |
| Tensile Strength (MPa) | 28.8 | 31.2 | 30.1 | 28.3 |
| Elongation at Break (%) | 516 | 539 | 554 | 494 |
| 100% stress at definite elongation (MPa) | 3.5 | 3.6 | 3.1 | 3.4 |
| 300% stress at definite elongation (MPa) | 14.6 | 15.0 | 14.0 | 15.3 |
| Tear Strength (kN/m) | 92 | 91 | 97 | 95 |
| Akron abrasion volume (cm)3) | 0.210 | 0.183 | 0.226 | 0.204 |
| Rebound value (%) | 56 | 54 | 54 | 55 |
| DMA0℃ | 0.15920 | 0.15440 | 0.17330 | 0.15460 |
| DMA30℃ | 0.09806 | 0.09601 | 0.11510 | 0.10390 |
| DMA60℃ | 0.08146 | 0.07554 | 0.09211 | 0.08627 |
Table 2 shows the properties of the rubbers obtained in the different examples after ageing treatment:
| example 1 | Example 2 | Example 3 | Example 4 | |
| Hardness (Shao Er A) | 68 | 69 | 68 | 69 |
| Tensile Strength (MPa) | 24.7 | 26.3 | 25.8 | 24.8 |
| Elongation at Break (%) | 414 | 420 | 413 | 398 |
| 100% stress at definite elongation (MPa) | 4.6 | 4.6 | 4.3 | 4.4 |
| 300% stress at definite elongation (MPa) | 17.2 | 18.1 | 18.3 | 18.3 |
| Akron abrasion volume (cm)3) | 0.362 | 0.332 | 0.401 | 0.344 |
| Rebound value (%) | 54 | 54 | 53 | 54 |
As can be seen from tables 1 and 2, the rubber prepared by the present invention meets the requirements of tire treads.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (4)
1. The low-rolling-resistance tire tread rubber is characterized by comprising the following raw materials in parts by mass: 100-120 parts of natural rubber, 30-35 parts of carbon black, 15-20 parts of high-dispersion white carbon black, 3-5 parts of silane coupling agent, 6-8 parts of tin dioxide, 3.5-5 parts of zinc oxide, 2-4 parts of stearic acid, 1.8-2.5 parts of anti-aging agent, 2-3 parts of rubber processing aid, 0.85-1 part of microcrystalline wax, 1.8-2.4 parts of accelerator and 1.4-1.6 parts of sulfur.
2. The low rolling resistance tire tread rubber as claimed in claim 1, wherein the specific surface area of the high dispersion white carbon black is 200-250m2/g。
3. The low rolling resistance tire tread rubber according to claim 1 or 2, wherein the white carbon black is biomass white carbon black.
4. The method for producing a low rolling resistance tire tread rubber according to claim 1, comprising the steps of:
(1) mixing in the first stage: adding natural rubber, a silane coupling agent, zinc oxide, stearic acid, an anti-aging agent, a rubber processing aid, microcrystalline wax, carbon black, white carbon black and tin dioxide into an internal mixer, pressing down an upper top bolt for 50s, lifting the upper top bolt for 10s, regulating the rotation speed to 20rpm/min, pressing down the upper bolt again for 20s, lifting the upper bolt for 5s, pressing down the upper bolt for the third time until the temperature of the mixture rises to 150 ℃, and stacking the mixture after extruding a rubber cooling line by a lower-layer extruder to obtain a first-section rubber compound;
(2) and (3) second-stage mixing: adding the first-stage rubber compound in the step (1) into an internal mixer again, adjusting the rotation speed to be 30rpm/min, adjusting the pressure to be 13.5MPa, pressing down the upper bolt to keep 30s, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 15s for the third time, lifting up the upper bolt to be in place, pressing down the upper bolt to the temperature of 150 ℃ for the fourth time, lifting up the upper bolt to discharge rubber, and discharging the rubber from an extruder to obtain second-stage mixed gel;
(3) and (3) third-stage mixing: and (3) adding the second-stage rubber compound obtained in the step (2), sulfur and an accelerator into an internal mixer, adjusting the rotation speed to be 20rpm/min and the pressure to be 6MPa, pressing down the upper bolt for 25s, lifting up the upper bolt to be in place, pressing down the upper bolt for 25s for the second time, lifting up the upper bolt to be in place, pressing down the upper bolt for 20s for the third time, lifting up the upper bolt for rubber discharge when the time is 120 seconds and the temperature is 110 ℃, and taking off the rubber from the internal mixer to obtain the low-rolling-resistance tire tread rubber.
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| CN201911336897.4A CN110951122A (en) | 2019-12-23 | 2019-12-23 | Low-rolling-resistance tire tread rubber and preparation method thereof |
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| CN201911336897.4A CN110951122A (en) | 2019-12-23 | 2019-12-23 | Low-rolling-resistance tire tread rubber and preparation method thereof |
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|---|---|---|---|---|
| US20020193490A1 (en) * | 2001-04-23 | 2002-12-19 | Bridgestone/Firestone, Inc. | High density metal oxide fillers in rubber compounds |
| CN103642246A (en) * | 2013-11-26 | 2014-03-19 | 山东永泰化工有限公司 | Preparation method for silicone rubber with thermal stability |
| CN107964130A (en) * | 2017-11-08 | 2018-04-27 | 三橡股份有限公司 | A kind of triangle rubber core rubber sizing material suitable for airdreadnought radial |
| CN109851877A (en) * | 2019-02-26 | 2019-06-07 | 山东宏盛橡胶科技有限公司 | A kind of environment-friendly type winter biology base tire preparation method |
-
2019
- 2019-12-23 CN CN201911336897.4A patent/CN110951122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020193490A1 (en) * | 2001-04-23 | 2002-12-19 | Bridgestone/Firestone, Inc. | High density metal oxide fillers in rubber compounds |
| CN103642246A (en) * | 2013-11-26 | 2014-03-19 | 山东永泰化工有限公司 | Preparation method for silicone rubber with thermal stability |
| CN107964130A (en) * | 2017-11-08 | 2018-04-27 | 三橡股份有限公司 | A kind of triangle rubber core rubber sizing material suitable for airdreadnought radial |
| CN109851877A (en) * | 2019-02-26 | 2019-06-07 | 山东宏盛橡胶科技有限公司 | A kind of environment-friendly type winter biology base tire preparation method |
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