CN108178846A - High performance tire sidewall rubber composition - Google Patents
High performance tire sidewall rubber composition Download PDFInfo
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- CN108178846A CN108178846A CN201611119035.2A CN201611119035A CN108178846A CN 108178846 A CN108178846 A CN 108178846A CN 201611119035 A CN201611119035 A CN 201611119035A CN 108178846 A CN108178846 A CN 108178846A
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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
- B60C1/0025—Compositions of the sidewalls
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
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- 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)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to rubber materials, a kind of high performance tire sidewall rubber composition is specifically disclosed, the rubber composition is using natural gum and rare earth polybutadiene rubber as primary raw material, using carbon black as reinforcing agent, is subject to vulcanizing agent, accelerating agent, anti-aging agent and other auxiliary agents etc..The rubber composition is it is characterized in that the raw material using following portions by weight is made:30.0 ~ 70.0 parts of natural rubber, 30.0 ~ 70.0 parts of rare earth polybutadiene rubber, 40.0 ~ 60.0 parts of carbon black, 2.0 ~ 5.0 parts of zinc oxide, 0.5 ~ 2.0 part of stearic acid, 1.0 ~ 3.0 parts of vulcanizing agent, 0.5 ~ 2.0 part of accelerating agent, 4.0 ~ 8.0 parts of aromatic naphtha, 2.0 ~ 5.0 parts of anti-aging agent, 0.8 ~ 2.0 part of protection wax.Good combination property of the composition in sidewall rubber, it can be on the basis of the anti-fatigue performances such as the flex crack performance of sidewall rubber and aging be ensured, the heat accumulation and rolling resistance of sidewall rubber are further reduced, the service life of tire can be extended, is suitable in low rolling adhesive type tyre sidewall rubber.
Description
Technical field
The invention belongs to field of rubber technology, and in particular to a kind of high performance tire sidewall rubber composition.
Background technology
Since the early 1990s, company of Michelin proposed " green tire " this concept, the development of green tire receives pass
Note.With energy conservation and environmental protection, the reduction global topic discussion of carbon emission is more and more ardenter, advantageously reduces fuel consumption, improves
The green tire of safety becomes the Main way of tire development.And using European Union as the implementation of the tire tag method of representative, Gao Xing
The exploitation of energy high-quality green tire becomes more urgent.
Green tire refers not only to the tire that low-rolling-resistance saves fuel oil, more extends to tire and expects production from former material
The entire life cycle of service life is arrived again, is only met green raw material, green production process and green manufacturing, is produced longevity
The tire of life safety fuel saving product is only present green tire.From material angle, the rolling resistance of tire is promoted from E grades to
C grades, there is no the requirement of essence to raw material, but if rolling resistance is promoted from C grades to B grades of even higher A grades, remove
Outside the optimization of technique and formula, the performance boost of raw material is also vital.
Rare earth polybutadiene rubber is a kind of butadiene rubber of the catalyst system and catalyzing polymerization based on rare earth metal neodymium, has link
Structure is regular, good linearity, and average molecular weight is high, and molecular weight distribution is adjustable and intensity is high, resistance to flexion, low-heat-generation, rolling resistance are low
The features such as, be radial preferred raw material.Compared with widely used nickel polymerized BR, rare earth polybutadiene rubber, which has, to be subtracted
Few tire hysteresis loss and endogenous heat reduce rolling resistance, improve tire wear resistance and anti-slippery, it is old to improve tire sidewall glue
Change crack phenomenon, improve tyres durable performance and high speed performance.Rare earth polybutadiene rubber is cis-content highest, object in butadiene rubber
Manage the best glue kind of mechanical performance.From the point of view of world development trends, rare earth polybutadiene rubber can substitute other butadiene rubbers, become
The important raw and processed materials of high-performance meridian tire is manufactured, development prospect is very wide.
Due to characteristics such as excellent resilience, low hysteresis loss and high abrasions, NdBR is low to high-performance high-quality to roll resistance
The exploitation of wheels tire becomes ever more important, becomes the development priority of tire new material.Narrow ditribution NdBR adds since it is preferable
Work performance and dynamic property become the emphasis of NdBR exploitations.
Tire sidewall position is deformed in tire operational process and hysteresis loss is all larger, to influence the service life of tire
And an important factor for rolling resistance.Current most of research, which only focuses on, improves fatigue performance, the heat on reduction sidewall, raising tire
One side in side heat conduction etc., and the overall performance for promoting ability tire of comprehensive performance extend the service life of tire,
Improve safety.
Patent No. CN101628992B, CN101952362B, CN103467793A, CN103865122A,
The patents such as CN105399994A are related to tire sidewall, relate generally to the sidewall rubber of ageing-resistant performance, the sidewall rubber containing white carbon,
Reclaimed rubber for sidewall rubber, the sidewall rubber for reducing gum content and production cost, low-heat-generation high heat conduction sidewall rubber, for high-performance
High-quality, it is comprehensive including physical mechanical property, flex fatigue life, endurance quality, heat, resilience performance, hysteresis loss etc.
The good sidewall sizing material of performance does not have open report also.
Invention content
The object of the present invention is to provide a kind of high performance tire sidewall rubber compositions.The rubber composition is in sidewall rubber
In comprehensive performance it is preferable, on the basis of the flex fatigue life of sidewall rubber and the anti-fatigue performances such as aging is ensured, into
One step reduces the heat accumulation and rolling resistance of tire sidewall glue, can extend the service life of tire, is suitable for low roll and hinders
In wheels tire sidewall rubber.Especially for high-capacity tyre sidewall rubber, before and after excellent vulcanizate aging and under the conditions of over cure
Mechanical property also has positive effect to improving tyre retreading.
The technical solution adopted by the present invention is:A kind of high performance tire sidewall rubber composition, it is characterised in that use
The raw material of following portions by weight is made:30.0 ~ 70.0 parts of natural rubber, 30.0 ~ 70.0 parts of rare earth polybutadiene rubber, carbon black 40.0 ~
60.0 parts, 2.0 ~ 5.0 parts of zinc oxide, 0.5 ~ 2.0 part of stearic acid, 1.0 ~ 3.0 parts of vulcanizing agent, 0.5 ~ 2.0 part of accelerating agent, aromatic hydrocarbons
4.0 ~ 8.0 parts of oil, 2.0 ~ 5.0 parts of anti-aging agent, 0.8 ~ 2.0 part of protection wax.
Preferably, the high performance tire sidewall rubber composition, it is characterised in that preferred following portions by weight
Raw material composition:45.0 ~ 55.0 parts of natural rubber, 45.0 ~ 55.0 parts of rare earth polybutadiene rubber, 45.0 ~ 55.0 parts of carbon black, zinc oxide
2.5 ~ 4.0 parts, 0.5 ~ 1.5 part of stearic acid, 1.0 ~ 2.0 parts of vulcanizing agent, 0.8 ~ 1.5 part of accelerating agent, 5.0 ~ 7.0 parts of aromatic naphtha, prevent
Old 2.5 ~ 4.0 parts of agent, 1.0 ~ 1.5 parts of protection wax.
Wherein described rare earth polybutadiene rubber is neodymium series rare earth polybutadiene rubber, and cis-structure is 95% ~ 99%, molecular weight distribution
2.5 ~ 3.0, mooney viscosity 40 ~ 50, preferably cis-structure are 96% ~ 98%, and molecular weight distribution is 2.6 ~ 2.8, mooney viscosity 42
~48.It is primary raw material that the present invention, which selects Jinzhou narrow ditribution NdBR, and actual measurement cis-structure is 96.1% ~ 97.6%, molecule
Amount is distributed in 2.68 ~ 2.74, Mooney viscosity 48.
Preferably, the preferred TDAE oil of aromatic naphtha, the preferred microwax of protection wax, anti-aging agent preferably 4020, vulcanizing agent
It is preferred that sulphur, accelerating agent preferred accelerators NS, the preferred N330 of carbon black.
The invention has the advantages that good combination property of the rubber composition in sidewall rubber, can ensure sidewall rubber
Flex crack performance and the anti-fatigue performances such as aging on the basis of, further reduce the heat accumulation of sidewall rubber and roll and hinder
Power can extend the service life of tire, be suitable in low rolling adhesive type tyre sidewall rubber.
Specific embodiment
The present invention is described in detail With reference to embodiment.
Rubber composition of the present invention can be prepared by existing conventional techniques, be comprised the concrete steps that:
First segment calendering process:It is carried out in 1.57L mixers, 80 DEG C of initial temperature, 80 revs/min of rotating speed.
Raw rubber is added in, puts down floating weight, softened rubber 1.0 minutes;
Lift floating weight, add in carbon black, stearic acid, zinc oxide, antioxidant 4020, microwax, put down floating weight, be kneaded 3.0 points
Clock;
Lift floating weight, be packed into TDAE oil, be kneaded 2.0 minutes;
Sizing material can be unloaded when sizing material temperature reaches 160 DEG C or total time reaches 6min.
Second segment calendering process:It is carried out on 6 cun of open mills, roll spacing 1.5mm, 40 ± 5 DEG C of roller temperature.
One section of rubber compound packet slow rollers;
Sulphur, accelerator NS are added in, after making 3/4 cutter per side three times, by rubber compound clot lower roll;
Roll spacing is adjusted to 0.8mm, and rubber compound clot is alternately added in from every one end, longitudinal direction it is thin it is six times logical after;
Sizing material is pressed into the film of 2 ± 0.5mm of thickness by bottom sheet.
Involved experimental data is carried out according to corresponding country or professional standard in the specific embodiment of the invention.Below
For main instrument and equipment and experimental condition:
(1) refining glue:It is just kneaded and is carried out in the Bambury mixers of 1.57L, 80 DEG C of temperature, 80 revs/min of rotor speed;It is mixed eventually
Refining carries out on XK-160 type open mills.
(2) Mooney viscosity and Mooney relaxation:Using Beijing You Shen Electronic Instruments Plants M200E type Mooney viscosity instrument, according to GB/
T 1232.1-2000 measure the Mooney viscosity and Mooney relaxation of sizing material, 100 DEG C of test temperature, Mooney relaxation time 120s.
(3) mooney scorch:Using Beijing You Shen Electronic Instruments Plants M200E type Mooney viscosity instrument, according to Europe GB/T 1233-
2008 measure the mooney scorch of sizing material, 120 DEG C of test temperature.
(4) vulcanization characteristics:The vulcanization characteristics of rubber compound is vulcanized using Beijing You Shen Electronic Instruments Plants C2000E types without rotor
Instrument measures the vulcanization characteristics of sizing material, 160 DEG C of test temperature, testing time 60min according to GB/T16584-1996.
(5) strength property:Using Beijing You Shen Electronic Instruments Plants T2000E type electronic tensile machines, according to GB/T 528-
2009 test rubber tensile ess-strain performances, sizing material tear resistance is tested according to GB/T 529-2008.
(6) cut resistant is tested:Using one side's cut resistant testing machine of Beijing all things on earth, rotating speed 725r/min, blow speed 120
Secondary/min, test period 15min.
(7) dynamic mechanical:The dynamic mechanical of vulcanizate uses the ARES G2 rotational rheometers of TA companies of the U.S.
Test, stress scans frequency 10Hz, 0 DEG C and 60 DEG C of temperature.
(8) other:Test of other in this work in relation to raw rubber, rubber compound and the various performances of vulcanizate, by corresponding
The pertinent regulations of national standard or professional standard carry out.
The purpose further illustrated the present invention with reference to embodiment, but the protection domain that the present invention weighs not is limited, this
The range of invention proposes in detail in the claims.Illustrate the good combination property of the tire sidewall rubber composition of the present invention, it can be
On the basis of ensureing the anti-fatigue performances such as flex crack performance and the aging of sidewall rubber, the heat accumulation of sidewall rubber is further reduced
And rolling resistance, the service life of tire can be extended, be suitable in low rolling adhesive type tyre sidewall rubber.
Embodiment
In order to confirm the reliability of effect of the present invention, by the tire sidewall glue property indices of the present invention and the prior art
It is compareed, it is as a result as follows:
1 formula table of table(Unit:Part)
Raw material | Comparative example | The present invention |
NR | 50.0 | 50.0 |
BR9000 | 50.0 | |
NdBR | 50.0 | |
Carbon black | 50.0 | 50.0 |
Antioxidant 4020 | 3.0 | 3.0 |
Microwax | 1.5 | 1.5 |
Zinc oxide | 3.0 | 3.0 |
Stearic acid | 1.0 | 1.0 |
TDAE oil | 6.0 | 6.0 |
Sulphur | 1.5 | 1.5 |
Accelerator NS | 0.9 | 0.9 |
2 Mooney Viscosity of Rubber Mix of table and Mooney relaxation
Project | Comparative example | The present invention |
ML1+4,100℃ | 49 | 59 |
Mooney relaxation | ||
t70/s | 7 | 6 |
t80/s | 10 | 9 |
Intercept k | 46.5 | 55.7 |
Slope | -0.6 | -0.7 |
Area A | 673 | 595 |
Mooney Viscosity of Rubber Mix and the result of the test of Mooney relaxation are shown in Table 2.The mooney viscosity of NdBR of the present invention is higher.Rubber compound door
T in Buddhist nun's relaxation80It shows that the elasticity of NdBR rubber compounds is low with slope, indicates that its rubber compound has smaller mouth-type expansion rate.
3 rubber compound vulcanization characteristics of table and mooney scorch
The vulcanization characteristics and mooney scorch of rubber compound the results are shown in Table 3.The vulcanization characteristics of NdBR of the present invention and comparative example substantially close to.
The Mooney scorch time of NdBR is substantially close to , ⊿ t30It is slightly higher.
The physical mechanical property of 4 vulcanizate of table
Project | Comparative example | The present invention |
Hardness(Shao Er A) | 57 | 58 |
300% stress at definite elongation/MPa | 8.93 | 9.04 |
Tensile strength/MPa | 21.8 | 20.1 |
Elongation rate of tensile failure/% | 578 | 534 |
Tearing strength/kNm-1 | 53 | 52 |
Resilience/% | 59 | 63 |
Compression Wen Sheng/DEG C | 31.1 | 28.4 |
Note:151 DEG C × 30min of conditions of vulcanization.
The physical mechanical property of vulcanizate is shown in Table 4.NdBR of the present invention is in tensile strength, stress at definite elongation, elongation rate of tensile failure side
Face is substantially suitable with comparative example, and tearing strength approaches, and heat is relatively low, and resilience is good.
The resistance to scarfing of 5 sidewall vulcanizate of table increases performance
Project | Comparative example | The present invention |
Cut resistant percent weight loss/% | 3.13 | 4.57 |
Flexion scarfing growth/mm, 10,000 times | 8.20 | 9.04 |
Reach 6 grades of breaches flexion numbers, ten thousand times | 51 | 51 |
Note:151 DEG C × 30min of conditions of vulcanization.
The resistance to scarfing of vulcanizate increases performance and is shown in Table 5.The belt cutting-resisting property difference of NdBR of the present invention and comparative example is little, aobvious
Excellent flex fatigue life is shown, test number (TN) when reaching 6 grades of flex cracks can effectively ensure that sidewall more than 510,000 times
Durability.
6 vulcanizate ageing properties of table
Project | Comparative example | The present invention |
Elongation rate of tensile failure/% after aging | 452 | 464 |
Change rate/% | -22 | -13 |
Aging post-tensioning intensity/MPa | 17.1 | 18.0 |
Change rate/% | -22 | -10 |
Tearing strength/kNm after aging-1 | 50 | 49 |
Change rate/% | 6 | 6 |
Note:151 DEG C × 30min of conditions of vulcanization, 100 DEG C of aging condition × for 24 hours.
The ageing properties of vulcanizate are shown in Table 6.In sidewall rubber, the aging post-tensioning intensity of NdBR vulcanizates of the present invention is drawn
Disconnected elongation and tearing strength level are opposite.In contrast, the performance change rate of NdBR of the present invention is less than comparative example.
7 vulcanizate dynamic mechanical of table
Viscoelastic parameters | Comparative example | The present invention |
tanδ(60℃) | 0.111 | 0.078 |
tanδ | 100 | 70 |
tanδ(0℃) | 0.14 | 0.107 |
tanδ | 100 | 76 |
Note:151 DEG C × 30min of conditions of vulcanization.
The dynamic mechanical of vulcanizate is shown in Table 7.60 DEG C of tan δ indexes are smaller, represent that rolling resistance is lower.The present invention
60 DEG C of tan δ significantly lower than comparative example, illustrate effectively reduce the lag damage of sidewall rubber using the present invention in sidewall
It loses, and then reduces the heat of sidewall rubber and the rolling resistance of tire.
Claims (5)
1. a kind of high performance tire sidewall rubber composition, it is characterised in that be made of the raw material of following portions by weight:My god
30.0 ~ 70.0 parts of T PNR, 30.0 ~ 70.0 parts of rare earth polybutadiene rubber, 40.0 ~ 60.0 parts of carbon black, 2.0 ~ 5.0 parts of zinc oxide, firmly
0.5 ~ 2.0 part of resin acid, 1.0 ~ 3.0 parts of vulcanizing agent, 0.5 ~ 2.0 part of accelerating agent, 4.0 ~ 8.0 parts of aromatic naphtha, anti-aging agent 2.0 ~ 5.0
Part, 0.8 ~ 2.0 part of protection wax.
2. high performance tire sidewall rubber composition according to claim 1, it is characterised in that:The rare earth polybutadiene rubber
It is neodymium series rare earth polybutadiene rubber, cis-structure is 95% ~ 99%, and molecular weight distribution is 2.5 ~ 3.0, mooney viscosity 40 ~ 50, preferably
Cis-structure is 96% ~ 98%, and molecular weight distribution is 2.6 ~ 2.8, mooney viscosity 42 ~ 48.
3. high performance tire sidewall rubber composition according to claim 1, it is characterised in that preferred following portions by weight
Raw material composition:45.0 ~ 55.0 parts of natural rubber, 45.0 ~ 55.0 parts of rare earth polybutadiene rubber, 45.0 ~ 55.0 parts of carbon black, zinc oxide
2.5 ~ 4.0 parts, 0.5 ~ 1.5 part of stearic acid, 1.0 ~ 2.0 parts of vulcanizing agent, 0.8 ~ 1.5 part of accelerating agent, 5.0 ~ 7.0 parts of aromatic naphtha, prevent
Old 2.5 ~ 4.0 parts of agent, 1.0 ~ 1.5 parts of protection wax.
4. rubber composition according to claim 1, it is characterised in that:The preferred TDAE oil of aromatic naphtha, protection wax are excellent
Select microwax, anti-aging agent preferably 4020, the preferred sulphur of vulcanizing agent, accelerating agent preferred accelerators NS, the preferred N330 of carbon black.
5. rubber composition according to claim 1, it is characterised in that:Comprehensive performance of the composition in sidewall rubber
It is good, it can further reduce sidewall rubber on the basis of the anti-fatigue performances such as the flex crack performance of sidewall rubber and aging are ensured
Heat accumulation and rolling resistance, the service life of tire can be extended, be suitable in low rolling adhesive type tyre sidewall rubber.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109206676A (en) * | 2018-08-17 | 2019-01-15 | 安徽佳通乘用子午线轮胎有限公司 | A kind of all steel sidewall ageing-resistant, tear-resistant and resistance to breach growth rubber composition and the preparation method and application thereof |
CN110669265A (en) * | 2019-10-28 | 2020-01-10 | 安徽佳通乘用子午线轮胎有限公司 | High-performance rubber composition for tire side and preparation method thereof |
CN110724313A (en) * | 2019-09-26 | 2020-01-24 | 芜湖集拓实心胎有限公司 | Tire tread rubber containing rare earth cis-polybutadiene |
CN112708214A (en) * | 2020-12-11 | 2021-04-27 | 厦门正新橡胶工业有限公司 | Anti-aging agent rubber patch, preparation method thereof and method for preparing tire by using anti-aging agent rubber patch |
CN114106426A (en) * | 2021-12-29 | 2022-03-01 | 四川远星橡胶有限责任公司 | High-resilience super-fatigue-resistance environment-friendly rubber and preparation method thereof |
CN115490919A (en) * | 2021-11-24 | 2022-12-20 | 江苏锐巴新材料科技有限公司 | Flexing and cracking resistant agent composition for shoe material and application thereof |
CN115521509A (en) * | 2020-12-09 | 2022-12-27 | 北京橡胶工业研究设计院有限公司 | High-performance rubber composition for tire side and preparation method thereof |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109206676A (en) * | 2018-08-17 | 2019-01-15 | 安徽佳通乘用子午线轮胎有限公司 | A kind of all steel sidewall ageing-resistant, tear-resistant and resistance to breach growth rubber composition and the preparation method and application thereof |
CN110724313A (en) * | 2019-09-26 | 2020-01-24 | 芜湖集拓实心胎有限公司 | Tire tread rubber containing rare earth cis-polybutadiene |
CN110669265A (en) * | 2019-10-28 | 2020-01-10 | 安徽佳通乘用子午线轮胎有限公司 | High-performance rubber composition for tire side and preparation method thereof |
CN115521509A (en) * | 2020-12-09 | 2022-12-27 | 北京橡胶工业研究设计院有限公司 | High-performance rubber composition for tire side and preparation method thereof |
CN112708214A (en) * | 2020-12-11 | 2021-04-27 | 厦门正新橡胶工业有限公司 | Anti-aging agent rubber patch, preparation method thereof and method for preparing tire by using anti-aging agent rubber patch |
CN112708214B (en) * | 2020-12-11 | 2023-07-07 | 厦门正新橡胶工业有限公司 | Anti-aging agent rubber patch, preparation method thereof and method for preparing tire by using anti-aging agent rubber patch |
CN115490919A (en) * | 2021-11-24 | 2022-12-20 | 江苏锐巴新材料科技有限公司 | Flexing and cracking resistant agent composition for shoe material and application thereof |
CN114106426A (en) * | 2021-12-29 | 2022-03-01 | 四川远星橡胶有限责任公司 | High-resilience super-fatigue-resistance environment-friendly rubber and preparation method thereof |
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