CN105754152A - Wet process based preparation method for natural rubber/white carbon black composite material for tire treads - Google Patents
Wet process based preparation method for natural rubber/white carbon black composite material for tire treads Download PDFInfo
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- CN105754152A CN105754152A CN201510288816.3A CN201510288816A CN105754152A CN 105754152 A CN105754152 A CN 105754152A CN 201510288816 A CN201510288816 A CN 201510288816A CN 105754152 A CN105754152 A CN 105754152A
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Abstract
The invention belongs to the field of rubber processing and relates to a wet process based preparation method for a natural rubber/white carbon black composite material for tire treads.The method includes steps: adding white carbon black, water, sodium stearate serving as an anionic surfactant and aluminum oxide serving as a heat conducting agent into a reactor, and stirring at a high speed to obtain high-dispersity white carbon black slurry; adding the white carbon black slurry into a natural latex solution, mixing while stirring at a high speed, and performing acid coagulation, washing and drying to obtain the wet natural rubber/white carbon black composite material with the white carbon black content being 50-80 parts by weight.The preparation method is simple in process, and filling quantity and dispersity of the white carbon black in rubber are increased due to adoption of the wet process.By application of the composite material to rubber of the tire treads, performances of the rubber can be remarkably improved.
Description
Technical field
The invention belongs to rubber processing, the preparation method relating to a kind of native rubber composite material, the particularly preparation method of a kind of tire tread wet method natural rubber/white carbon black composite material.
Background technology
Natural rubber combination property is good, is widely used to now in tire, sebific duct, adhesive tape and various industrial rubber articles.Especially, in high-capacity tyre, tyre surface is frequently with natural rubber.
White carbon is a kind of excellent rubber reinforcing filler, and the physical property of sizing material can be greatly improved.The tread rubber of tire adds white carbon, it is possible to improve the anti-cutting of tyre surface, tear resistance, reduce spring and use up block, reduce hysteresis loss, reduce the resistance to rolling of tire, do not lose its anti-slippery simultaneously.The sizing material that the sizing material that white carbon is filled is filled with ordinary carbon black compares, and resistance to rolling can reduce by 30%.Along with the requirement of tire meridian, environmental protection and energy saving and comfortableness is more and more higher, white carbon application in tire is also more and more important.Requiring reduction resistance to rolling at present, improving grasp property aspect, white carbon and white carbon black and with showing excellent properties, and in formula, all substituting conventional carbon black with white carbon produce " green tire ".
When filling more than 50 parts white carbons in natural rubber, owing to white carbon rich surface hydroxyl, water absorption are strong, and natural rubber poor compatibility, difficulties in dispersion, easily fly upward at mixing process, seriously polluted.For improving processability and the dispersibility of high filling white carbon black, it is desirable to way be use natural rubber/white carbon black composite material.
The preparation technology of wet method natural rubber/white carbon black composite material is simple, energy consumption is low, cost is low；Latex coordinates handling ease to realize producing conveyance conduit, producing gearingization and automatization；Latex is in the course of processing, and rubber molecule is not subject to the destruction of mechanical shearing and high-temperature thermal oxidation, thus elastic big, the intensity of goods and percentage elongation are high.
Summary of the invention
The preparation method that it is an object of the invention to provide a kind of tire tread wet method natural rubber/white carbon black composite material.Adopt wet processing, the white carbon serosity of high dispersive is prepared by adding function additive, then flocculation, tabletting, pelletize, dry, prepared wet method natural rubber/white carbon black composite material has good tensile property, tear resistance, wearability, low-heat-generation, low-rolling-resistance, can be applicable in tire tread glue.
The technical solution adopted in the present invention:
The preparation method of a kind of tire tread wet method natural rubber/white carbon black composite material, comprises the following steps:
1, the preparation of white carbon serosity
Add the white carbon of 10～30 parts, the water of 70～90 parts in the reactor by weight, the anion surfactant of 0.1～2%, the thermal conducting agent of 0.1～3% is added again with white carbon siccative weighing scale, carry out high-speed stirred, speed is 1000～4000rpm, time is 10～90min, prepare into 10～30% white carbon serosity of high dispersive, standby.Described anion surfactant is sodium stearate；Described thermal conducting agent is aluminium oxide.
2, the mixing of white carbon serosity and Heveatex solution
Being joined in the Heveatex solution that dry rubber content is 100 parts by the white carbon serosity of 50～80 parts of high dispersive by weight, mix under high velocity agitation, speed is 1000～3500rpm, and the time is 10～60min.
3, after white carbon serosity and Heveatex solution mix, consolidate through acid cure, wash, dry, obtain wet method natural rubber/white carbon black composite material that white carbon content is 50～80phr.
Present invention process is simple, adopt wet processing, the time of mixing a large amount of white carbon can be effectively shortened, reduce energy consumption, improve again white carbon dispersibility in rubber and uniformity, also avoid white carbon dust from flying during compounding rubber, improve work environment, decrease environmental pollution, it is to avoid in dry method, rubber molecule is subject to the destruction of mechanical shearing and high-temperature thermal oxidation.In tire tread glue, it is possible to significantly improve the loading of white carbon and the performance of sizing material.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.The experimental technique of unreceipted actual conditions in the following example, generally conventionally condition, or according to manufacturer it is proposed that condition.
Embodiment one
1, the preparation of white carbon serosity: adding 100g white carbon, 900g water, 0.1g sodium stearate in the reactor, 0.1g aluminium oxide, and high-speed stirred, speed is 1000rpm, and the time is 90min, prepares into the white carbon serosity of high dispersive, standby.
2, the mixing of white carbon serosity and Heveatex solution: white carbon serosity step 1 prepared joins in Heveatex solution (dry containing 30%) stable for 667g, mixes under high velocity agitation, and speed is 3500rpm, and the time is 10min.
3, after white carbon serosity and Heveatex solution mix, solidify through formic acid, wash, dry, obtain wet method natural rubber/white carbon black composite material that white carbon content is 50phr.
Embodiment two
1, the preparation of white carbon serosity: adding 100g white carbon, 90g water, 1g sodium stearate, 2g aluminium oxide high-speed stirred in the reactor, speed is 4000rpm, and the time is 10min, prepares into the white carbon serosity of high dispersive, standby.
2, the mixing of white carbon serosity and Heveatex solution: white carbon serosity step 1) prepared joins in Heveatex solution (dry containing 30%) stable for 556g, mixes under high velocity agitation, and speed is 3500rpm, and the time is 10min.
3, after white carbon serosity and Heveatex solution mix, solidify through formic acid, wash, dry, obtain wet method natural rubber/white carbon black composite material that white carbon content is 60phr.
Embodiment three
1, the preparation of white carbon serosity: adding 100g white carbon, 900g water, 2g sodium stearate in the reactor, 3g aluminium oxide, and high-speed stirred, speed is 1000rpm, and the time is 90min, prepares into the white carbon serosity of high dispersive, standby.
2, the mixing of white carbon serosity and Heveatex solution: white carbon serosity step 1) prepared joins in Heveatex solution (dry containing 30%) stable for 417g, mixes under high velocity agitation, and speed is 3500rpm, and the time is 10min.
3, after white carbon serosity and Heveatex solution mix, solidify through formic acid, wash, dry, obtain wet method natural rubber/white carbon black composite material that white carbon content is 80phr.
Experiment:
Adopting truck radial tire tread formula, each formula contrasts such as following table (being weight portion below):
Table 1 wet method natural rubber/white carbon black composite material tyre surface formula table
Note: comparative example is the mixing white carbon adding 50phr of dry method.
The performance test results of table 2 tyre surface formula
| Sequence number | Project | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| 1 | Mooney viscosity ML (1+4) 100 DEG C | 65 | 61 | 70 | 80 |
| 2 | Hardness/Shao Er A | 70 | 69 | 81 | 87 |
| 3 | Hot strength/MPa | 25 | 26 | 30 | 29 |
| 4 | Elongation at break/% | 350 | 343 | 325 | 314 |
| 5 | 100% stress at definite elongation/MPa | 4.15 | 4.20 | 5.35 | 5.65 |
| 6 | 300% stress at definite elongation/MPa | 16.02 | 16.58 | 20.15 | 20.76 |
| 7 | Tearing strength/KN/m | 70 | 75 | 89 | 96 |
| 8 | Akron abrasion volume/cm3 | 0.160 | 0.145 | 0.140 | 0.120 |
| 9 | Compression fatigue temperature rise/DEG C | 29.5 | 25.5 | 27.3 | 29.0 |
| 10 | tanδ 0℃ | 0.112 | 0.126 | 0.130 | 0.122 |
| 11 | tanδ 60℃ | 0.098 | 0.085 | 0.95 | 0.103 |
Can be seen that from experimental result, the sizing material of wet method natural rubber/white carbon black composite material that employing the inventive method prepares, the aspects such as its tensile property, tear resistance, wearability and resistance to rolling are better than comparative example, all improve a lot, can be applicable in tire tread glue.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. the preparation method of tire tread wet method natural rubber/white carbon black composite material, it is characterised in that comprise the following steps: the preparation of white carbon serosity；The mixing of white carbon serosity and Heveatex solution；Mixed liquid is consolidated through acid cure, washs, is dried, and obtains wet method natural rubber/white carbon black composite material that white carbon content is 50～80 weight portions.
2. the preparation method of a kind of tire tread wet method natural rubber/white carbon black composite material according to claim 1, it is characterized in that, the preparation of white carbon serosity, add the white carbon of 10～30 parts, the water of 70～90 parts in the reactor by weight, the anion surfactant of 0.1～2%, the thermal conducting agent of 0.1～3% is added again with white carbon siccative weighing scale, carry out high-speed stirred, speed is 1000～4000rpm, time is 10～90min, prepare into 10～30% white carbon serosity of high dispersive, standby；Described anion surfactant is sodium stearate；Described thermal conducting agent is aluminium oxide.
3. the preparation method of a kind of tire tread wet method natural rubber/white carbon black composite material according to claim 1, it is characterized in that, the mixing of white carbon serosity and Heveatex solution, by weight the white carbon serosity of 50～80 parts of high dispersive is joined in the Heveatex solution that dry rubber content is 100 parts, mix under high velocity agitation, speed is 1000～3500rpm, and the time is 10～60min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107540886A (en) * | 2017-08-25 | 2018-01-05 | 上海众力投资发展有限公司 | A kind of car engine suspension rubber composition |
| CN108659279A (en) * | 2018-05-21 | 2018-10-16 | 中国化工集团曙光橡胶工业研究设计院有限公司 | A kind of abrasion for aircraft tyre identify glue |
| CN112708173A (en) * | 2020-12-22 | 2021-04-27 | 贵州轮胎股份有限公司 | Ultra-high-thermal-conductivity all-steel radial giant tire tread rubber material and preparation method thereof |
| CN113578120A (en) * | 2021-08-19 | 2021-11-02 | 海南天然橡胶产业集团股份有限公司 | Natural latex multiphase ratio automatic control rapid homogenization system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153792A (en) * | 2011-03-17 | 2011-08-17 | 株洲安宝麟锋新材料有限公司 | Preparation method of wet process mixed natural rubber material |
| CN104311906A (en) * | 2014-11-12 | 2015-01-28 | 海南天然橡胶产业集团股份有限公司 | Preparation method for white carbon black/NR (natural rubber) master batch for belted layer of tire |
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- 2015-05-29 CN CN201510288816.3A patent/CN105754152A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153792A (en) * | 2011-03-17 | 2011-08-17 | 株洲安宝麟锋新材料有限公司 | Preparation method of wet process mixed natural rubber material |
| CN104311906A (en) * | 2014-11-12 | 2015-01-28 | 海南天然橡胶产业集团股份有限公司 | Preparation method for white carbon black/NR (natural rubber) master batch for belted layer of tire |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107540886A (en) * | 2017-08-25 | 2018-01-05 | 上海众力投资发展有限公司 | A kind of car engine suspension rubber composition |
| CN107540886B (en) * | 2017-08-25 | 2020-11-17 | 上海众力投资发展有限公司 | Automobile engine suspension rubber composition |
| CN108659279A (en) * | 2018-05-21 | 2018-10-16 | 中国化工集团曙光橡胶工业研究设计院有限公司 | A kind of abrasion for aircraft tyre identify glue |
| CN112708173A (en) * | 2020-12-22 | 2021-04-27 | 贵州轮胎股份有限公司 | Ultra-high-thermal-conductivity all-steel radial giant tire tread rubber material and preparation method thereof |
| CN113578120A (en) * | 2021-08-19 | 2021-11-02 | 海南天然橡胶产业集团股份有限公司 | Natural latex multiphase ratio automatic control rapid homogenization system |
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Inventor after: Ding Aiwu Inventor after: Lu Ming Inventor after: Deng Guoqi Inventor after: Wang Ting Inventor after: Zhou Dong Inventor after: Wang Yongwei Inventor after: Tang Hailong Inventor after: Li Huating Inventor after: Huang Xiangqian Inventor before: Lu Ming Inventor before: Wang Ting Inventor before: Wang Yongwei Inventor before: Li Huating |
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Application publication date: 20160713 |
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