CN106832448A - A kind of tread rubber for preparing high-performance tire - Google Patents
A kind of tread rubber for preparing high-performance tire Download PDFInfo
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- CN106832448A CN106832448A CN201710095677.1A CN201710095677A CN106832448A CN 106832448 A CN106832448 A CN 106832448A CN 201710095677 A CN201710095677 A CN 201710095677A CN 106832448 A CN106832448 A CN 106832448A
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/283—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring data of the driving system, e.g. torque, speed, power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
-
- 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
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
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Abstract
A kind of tread rubber for preparing high-performance tire, is prepared from by the raw material of following weight portion：60~100 parts of natural rubber, 0~30 part of butadiene rubber, 0~30 part of solution polymerized butadiene styrene rubber, 1~3 part of stearic acid, 3~5 parts of zinc oxide, 1~1.6 part of accelerator, 0.3~0.8 part of sulphur, 3 parts of age resistor, 40~55 parts of carbon black, 0~15 part of white carbon, 0~1.5 part of coupling agent, 0.5~2.5 part of anti-recovery agent, 0.1~0.25 part of anti-scorching agent CTP.Method present invention also offers above-mentioned tread rubber is prepared.The present invention substitutes part sulfur consumption using sulfuration resistant reducing agent, forming the flexible mixing cross-bond tyre surface formula of the invention of similar with the tool polysulfide bond of thermodynamically stable monosulfidic bond, cystine linkage has that heat is low, wearability is good, ageing-resistant performance is good, tearing strength is high and the performance such as anti-recovery, improves the service life of tire.
Description
Technical field
The present invention relates to chemical field, more particularly to rubber tyre, particularly a kind of tread rubber for preparing high-performance tire.
Background technology
With the implementation of tire tag method, the requirement that performance is grabbed in low rolling resistance, high abrasion and moisture-resistant to tire becomes harsh,
The requirement for improving green tire wearability and reducing formula heat becomes an important topic of tire research staff.
Can just make wearability performance and the dynamic property can be with by optimizing filler systems and vulcanizing system under normal circumstances
Improve wearability, ageing-resistant performance and the reduction heat of tire, but in view of combination property, such as use high wear-resistant carbon black or hard charcoal
It is black, but mixing difficulty is high, it is possible to do not have good wearability and thermal effect of being born；Simple reduction sulfur consumption and carry
Accelerator dosage high causes the combination property of tyre surface formula to decline, such as mechanical strength and tear resistance are poor, dynamic fatigue property
It is bad；Simple raising sulfur consumption reduction accelerator dosage, the aging conservation rate of formula is poor.To improve the use of tire tread
Life-span, it is necessary to reduce sulfur consumption and form the flexible mixing of thermodynamically stable monosulfidic bond polysulfide bond similar with cystine linkage and tool
Cross-bond, to ensure good tearing strength, heat oxygen aging resistance, high-wearing feature and low hysteresis.
The content of the invention
It is an object of the invention to provide a kind of tread rubber for preparing high-performance tire, described is this for preparing
The tread rubber of high-performance tire to solve existing tire tread mechanical strength of the prior art and tear resistance is poor, dynamic fatigue
Performance is bad, aging conservation rate difference technical problem.
The invention provides a kind of tread rubber for preparing high-performance tire, it is prepared from by the raw material of following weight portion：
Described natural rubber is natural rubber SMR20 or natural rubber SIR20；Described butadiene rubber is neodymium series along fourth
Rubber, ash content≤0.5%, cis-Isosorbide-5-Nitrae content >=96%, organic acid content ＜ 1%；The solution polymerized butadiene styrene rubber is molecular weight
Answer ＞ 200,000, molecular weight distribution>1.5, combinated styrene content content between 18~25%, cis-l, 4 butadiene contents>20%；
Described accelerator uses accelerator NS；Described age resistor is using antioxidant 4020, age resistor CPL, anti-aging agent RD or anti-
Protect any one or more in wax；Described carbon black uses N134 carbon blacks, N234 carbon blacks or N375 carbon blacks；Described idol
Connection agent uses silane coupler Si-69；Described anti-recovery agent is double (N, N '-the bisbenzothiazole carbamyls two of 1,6-
Sulphur)-hexane, molecular formula is：
Further, described white carbon uses high dispersive structure white carbon high.
Further, in terms of 100 parts by weight of rubber major ingredients, described carbon black with alone carbon black or can be used in combination, or carbon black
Combined with a small amount of white carbon, when white carbon consumption be less than 10 weight portion when be not added with silane coupler Si-69, when white carbon consumption >=
Add silane coupler Si-69 during 10 weight portion, carbon black is 45~55 weight portions with the total consumption of white carbon.
Further, in terms of 100 parts by weight of rubber major ingredients, sulphur and anti-recovery agent consumption in described tread rubber
Summation is 0.8~3.3 weight portion.
It is present invention also offers a kind of above-mentioned preparation method for preparing the tread rubber of high-performance tire including as follows
Step：
1) one starts banbury the step of refine one section of plain glue using rubber internal mixer, sets the rotor speed of banbury
It is 45~55rpm, mixing pressure is 10~15MPa, and 30~40 DEG C of cooling water temperature, temperature of rotor is 30~40 DEG C, Ran Houjia
Enter butadiene rubber, solution polymerized butadiene styrene rubber and natural rubber, plasticate 30~50 seconds and carry floating weight, stop 10~15 seconds pressure floating weights,
Melting temperature carries floating weight to 145 DEG C, and drop rotating speed to 30~40rpm stops 10~15 seconds pressure floating weights, when the temperature to 155~
170 DEG C of dumpings；
2) the step of two sections of masterbatch of a refining, start banbury, and the rotor speed for setting banbury is 45~55rpm,
Mixing pressure is 10~15MPa, and 30 DEG C~40 DEG C of cooling water temperature, temperature of rotor is 30~40 DEG C, adds step 1) described in
One section of mastication, carbon black, white carbon and coupling agent, mixing carry floating weight in 30~50 seconds, then toward adding zinc oxide, hard in kneading chamber
Resin acid, age resistor, mixing to temperature carry floating weight, reduction rotating speed to 20~30rpm for 130~145 DEG C, stop 10~15 seconds and press
Floating weight, mixing to temperature is 150~160 DEG C of dumpings, and this glue is two sections of rubber master batch；
3) two sections of rubber master batch are placed in and 6~8h is parked in air；Refining eventually：Start banbury, the rotor speed of banbury is set
It is 20~25rpm, mixing pressure is 10~15MPa, and 30 DEG C~40 DEG C of cooling water temperature, temperature of rotor is 30~45 DEG C, by two
Section rubber master batch and sulphur, accelerator, anti-recovery agent put into kneading chamber together with anti-scorching agent CTP, carry floating weight within 45~60 seconds, stop
10~15 seconds pressure bolts are stayed, mixing to temperature carries floating weight when being 80~85 DEG C, stop 10~15 seconds pressure floating weights, treat sizing material temperature
For 90 DEG C~115 DEG C carry bolt dumping, bottom sheet is cooled to room temperature, obtains the tread rubber for preparing high-performance tire.
By the present invention in that with cross-linking type anti-recovery agent 1,6- double (N, N '-sulphur of bisbenzothiazole carbamyl two)-
Hexane replaces part sulphur, sulphur usage amount in formula is reduced, so that tread rubber forms thermodynamically stable monosulfidic bond, double sulphur
The flexible mixing cross-bond of key polysulfide bond similar with tool, to ensure that tyre surface has good tearing strength, heat oxygen aging resistance, height resistance to
Mill property and low hysteresis.
The above-mentioned rubber component of the present invention is natural rubber, or natural rubber is used in combination with butadiene rubber, solution polymerized butadiene styrene rubber
Formula, by natural rubber and butadiene rubber and with main lift is wear-resisting and flexible resistance, natural rubber and solution polymerized butylbenzene rubber
Glue mainly improve moisture-resistant grab performance and it is resistance to gnaw belt cutting-resisting property, natural rubber is used in combination simultaneously with butadiene rubber and solution polymerized butadiene styrene rubber
Mainly balance wear-resisting and lifting moisture-resistant and grab performance, thus the overall performance of tyre surface formula can be improved.The butadiene rubber for using
It is neodymium series butadiene rubber, ash content≤0.5%, cis-Isosorbide-5-Nitrae content >=96%, organic acid content ＜ 1%；The solution polymerized butylbenzene for using
Rubber is molecular weight ＞ 200,000, molecular weight distribution>1.5, combinated styrene content content between 18~25%, cis-l, 4 butadiene
Content>20%.
The above-mentioned carbon black of the present invention is that N134 carbon blacks, N234 carbon blacks or the N375 carbon blacks for using belong to high abrasion structure charcoal high
It is black；White carbon uses high dispersive structure white carbon high, the main tear-proof or heat of being born for improving tire tread of the addition of white carbon
Performance；Described carbon black with a kind of alone carbon black or can be used in combination, or carbon black is combined with a small amount of white carbon；With 100 weight portion rubbers
Glue major ingredient meter, Si-69 is not added with when white carbon consumption 10 weight portions of ＜, and Si-69, charcoal are added when white carbon consumption >=10 weight portion
The total consumption of B＆W carbon black is 45~55 weight portions.
The low-sulfur rush system high of a small amount of common sulphur is employed in the above-mentioned vulcanizing system of the present invention, so as to substantially reduce sulphur
Change the thermal degradation of glue polysulfide bond, while it also avoid the bloom phenomenon that elastomeric compound is extruded and occurred when being molded.
The above-mentioned protection system of the present invention uses anti-aging agent RD+4020+ protection waxes or age resistor CPL+4020+ protection waxes,
4020 have excellent antioxygen, ozone-resistant and resistance to flexion to act on, and RD, CPL have splendid heat oxygen aging resistance effect, and protection wax exists
Sizing material surface forms coating of wax film diaphragm, and this cere can effectively prevent oxygen, ozone from permeating, thermo-oxidative ageing be reached good
Good protective action.
The above-mentioned recovery agent of the present invention is using the anti-recovery agent for being cross-linking type, and chemistry is entitled：1,6- pairs (N,
N '-the sulphur of bisbenzothiazole carbamyl two)-hexane, in the sulfur cross-linking of participation, thermodynamically stable monosulfidic bond, double will be formed
The flexible mixing cross-bond of sulfide linkage polysulfide bond similar with tool, structure is following (x≤3)：Rubber-SX-(CH2)6-SX- rubber.
The present invention is compared with prior art, and its technological progress is positive and obvious.Tire prepared by the present invention is being used
During can reduce the heat of tire, heat ageing speed and improve the wearability of tyre surface, heat oxygen aging resistance, tearing strength and anti-
Reversion, so as to improve the service life of tire.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1, a kind of described tread rubber for preparing high-performance tire, each component raw material is by following weight portion group
Into：100 parts of natural rubber, 50 parts of carbon black N234,1.5 parts of antioxidant 4020,0.5 part of RD, 1 part of protection wax, 2 parts of stearic acid,
4 parts of ZnO, 0.7 part of sulphur, 1.2 parts of accelerator, 0.8 part of anti-recovery agent KA9188,0.15 part of anti-scorching agent CTP.
Its physical property is shown in Table 1 to the finished product after testing
Embodiment 2, a kind of described tread rubber for preparing high-performance tire, each component raw material is by following weight portion group
Into：70 parts of natural rubber, 30 parts of butadiene rubber, 47 parts of carbon black N134,6 parts of white carbon, 1.5 parts of antioxidant 4020,1 part of RD,
1 part of protection wax, 2 parts of stearic acid, 4 parts of ZnO, 0.6 part of sulphur, 1.2 parts of accelerator NS, anti-recovery agent WY9188 1.2
Part, 0.12 part of anti-scorching agent CTP.
Its physical property is shown in Table 1 to the finished product after testing
Embodiment 3, a kind of described tread rubber for preparing high-performance tire, each component raw material is by following weight portion group
Into：60 parts of natural rubber, 20 parts of butadiene rubber, 20 parts of solution polymerized butadiene styrene rubber, carbon black N37540 parts, 15 parts of white carbon, coupling agent
1.5 parts of Si-69,1.5 parts of antioxidant 4020,1 part of RD, 1 part of protection wax, 3 parts of stearic acid, 3 parts of ZnO, 0.3 part of sulphur promotees
Enter 1.6 parts of agent, 2.5 parts of anti-recovery agent, 0.10 part of anti-scorching agent CTP.
Comparative example, each component raw material of common tyre surface consists of the following parts by weight：100 parts of natural rubber, carbon black N234 50
Part, 1.5 parts of antioxidant 4020,0.5 part of RD, 1 part of protection wax, 2 parts of stearic acid, ZnO4 parts, 1.1 parts of sulphur, accelerator 1.2
Part, 0.15 part of anti-scorching agent CTP.
The preparation method of above-described embodiment is：
One section of mastication：Start banbury, the rotor speed for setting banbury is 45rpm, mixing pressure is 10MPa, cooling
30 DEG C of coolant-temperature gage, temperature of rotor is 35 DEG C, is subsequently adding butadiene rubber, solution polymerized butadiene styrene rubber and natural rubber, plasticates 35 seconds and carries
Floating weight, stops 10 seconds pressure floating weights, and melting temperature carries floating weight to 145 DEG C, and drop rotating speed to 30rpm is stopped 15 seconds and pushed up in pressure
Bolt, when the temperature to 160 DEG C of dumpings；
Two sections of masterbatchings：Start banbury, the rotor speed for setting banbury is 50rpm, mixing pressure is 10MPa, cooling
30 DEG C of coolant-temperature gage, temperature of rotor is 35 DEG C, adds one section of plain glue, carbon black, white carbon, Si-69,
Mixing carries floating weight in 50 seconds, then toward add in kneading chamber zinc oxide, stearic acid, antioxidant 4020, anti-aging agent RD,
Protection wax, mixing to temperature carries floating weight, reduction rotating speed to 30rpm for 135 DEG C, stops 15 seconds pressure floating weights, mixing to temperature
It is 156 DEG C of dumpings, this glue is two sections of rubber master batch；
Rubber master batch stands：Two sections of rubber master batch are placed in air and are parked 8 hours；
Refining eventually：Start banbury, the rotor speed for setting banbury is 20rpm, mixing pressure is 10MPa, coolant water temperature
30 DEG C DEG C of degree, temperature of rotor is 35 DEG C, by two sections of rubber master batch and sulphur, accelerator NS, anti-recovery agent KA9188 and antiscorching agent
CTP puts into kneading chamber together, carries within 45 seconds floating weight, stops 10 seconds pressure bolts, and mixing to temperature carries floating weight, stops 15 when being 85 DEG C
Second pressure floating weight, treats sizing material temperature for 112 DEG C carry bolt dumping and obtain finished product.
Its physical property is shown in Table 1 to the finished product after testing.
Table 1
In the present invention：
Carbon black N134, N234, N375：Cabot chemical industry (Tianjin) Co., Ltd produces.
White carbon：(Sol ties up fine chemistry industry additive (Qingdao) to sub- fine chemistry industry additive (Qingdao) Co., Ltd in sieve ground
Co., Ltd).
Si-69：Jingzhou Jianghan Fine Chemical Co., Ltd., trade name silane coupler Si-69, entitled pair of chemistry-
(γ-triethoxy silicon substrate propyl group) tetrasulfide.
Antioxidant 4020：Jiangsu Sheng'Ao Chemical Technology Co., Ltd produces, trade name antioxidant 4020, and chemical name is
N- (1,3- dimethylbutyl)-N '-diphenyl-para-phenylene diamine.
Anti-aging agent RD：Tianjin Ke Mai Chemical Co., Ltd.s produce, trade name anti-aging agent RD, entitled 2,2, the 4- front three of chemistry
Base -1,2- dihyaroquinoline condensates.
Age resistor CPL：Chemtura Corporation produces, trade name Lowinox CPL.
Accelerator NS：Shandong Yanggu Huatai Chemical Industry Co., Ltd, trade name NS, the chemical entitled N- tert-butyl groups -2-
Benzothiazole sulfenamide.
Anti-recovery agent KA9188：LANXESS CORPORATION, trade nameVP KA 9188, change
Scientific name is double (N, N '-sulphur of bisbenzothiazole the carbamyl two)-hexanes of 1,6-.
Anti-recovery agent WY9188：The auspicious Chemical Co., Ltd.s of Shanghai Qi, trade name WY 9188, chemistry entitled 1,6-
Double (N, N '-sulphur of bisbenzothiazole carbamyl two)-hexanes.
Anti-scorching agent CTP：Yanggu Hua Tai Chemical Co., Ltd.s produce, trade name anti-scorching agent CTP, chemical entitled N- cyclohexyl
Thio neck BIDA.
Above content, a kind of tread rubber for preparing high-performance tire of the present invention, by embodiment with it is general
The tyre surface contrast of logical tire finds that substituting part sulphur using cross-linking type anti-recovery agent will play raising wearability, tear
The effect of intensity, aging conservation rate and reduction compression heat generation.
Claims (5)
1. a kind of tread rubber for preparing high-performance tire, it is characterised in that：It is prepared from by the raw material of following weight portion：
The content of glue adds up to 100 weight portions；
Described natural rubber is natural rubber SMR20 or natural rubber SIR20；Described butadiene rubber is neodymium series along fourth rubber
Glue, ash content≤0.5%, cis-Isosorbide-5-Nitrae content >=96%, organic acid content ＜ 1%；The solution polymerized butadiene styrene rubber should for molecular weight
＞ 200,000, molecular weight distribution>1.5, combinated styrene content content between 18~25%, cis-l, 4 butadiene contents>20%；Institute
The accelerator stated uses accelerator NS；Described age resistor uses antioxidant 4020, age resistor CPL, anti-aging agent RD or protection
Any one or more in wax；Described carbon black uses N134 carbon blacks, N234 carbon blacks or N375 carbon blacks；Described coupling
Agent uses silane coupler Si-69；Described anti-recovery agent is double (N, N '-the bisbenzothiazole carbamyls two of 1,6-
Sulphur)-hexane, molecular formula is：
2. a kind of tread rubber for preparing high-performance tire according to claim 1, it is characterised in that：Described hard charcoal
Black use high dispersive structure white carbon high.
3. a kind of tread rubber for preparing high-performance tire according to claim 1, it is characterised in that：With 100 weight
Part rubber major ingredient meter, is not added with silane coupler Si-69, when white carbon consumption >=10 weight when white carbon consumption is less than 10 weight portion
Add silane coupler Si-69 during amount part, carbon black is 45~55 weight portions with the total consumption of white carbon.
4. a kind of tread rubber for preparing high-performance tire according to claim 1, it is characterised in that：With 100 weight
Part rubber major ingredient meter, sulphur and anti-recovery agent consumption summation in described tread rubber are 0.8~3.3 weight portion.
5. a kind of method of the tread rubber for preparing high-performance tire prepared described in claim 1, it is characterised in that including
Following steps：
1) one starts banbury the step of refine one section of plain glue using rubber internal mixer, and the rotor speed for setting banbury is 45
~55rpm, mixing pressure is 10~15MPa, and 30~40 DEG C of cooling water temperature, temperature of rotor is 30~40 DEG C, is subsequently adding suitable
Buna, solution polymerized butadiene styrene rubber and natural rubber, plasticate 30~50 seconds and carry floating weight, stop 10~15 seconds pressure floating weights, mixing
Temperature carries floating weight to 145 DEG C, and drop rotating speed to 30~40rpm stops 10~15 seconds pressure floating weights, when the temperature to 155~170 DEG C
Dumping；
2) the step of two sections of masterbatch of a refining, start banbury, and the rotor speed for setting banbury is 45~55rpm, mixing
Pressure be 10~15MPa, 30 DEG C~40 DEG C of cooling water temperature, temperature of rotor be 30~40 DEG C, add step 1) described in one section
Mastication, carbon black, white carbon and coupling agent, mixing carry floating weight in 30~50 seconds, then toward adding zinc oxide, tristearin in kneading chamber
Acid, age resistor, mixing to temperature carry floating weight, reduction rotating speed to 20~30rpm for 130~145 DEG C, stop in 10~15 seconds pressures
Top bolt, mixing to temperature is 150~160 DEG C of dumpings, and this glue is two sections of rubber master batch；
3) two sections of rubber master batch are placed in and 6~8h is parked in air；Refining eventually：Start banbury, the rotor speed for setting banbury is 20
~25rpm, mixing pressure is 10~15MPa, and 30 DEG C~40 DEG C of cooling water temperature, temperature of rotor is 30~45 DEG C, by two sections of mothers
Glue and sulphur, accelerator, anti-recovery agent put into kneading chamber together with anti-scorching agent CTP, carry within 45~60 seconds floating weight, stop 10
~15 seconds pressure bolts, mixing to temperature carries floating weight when being 80~85 DEG C, stop 10~15 seconds pressure floating weights, treats that sizing material temperature is 90
DEG C~115 DEG C carry bolt dumping, bottom sheet is cooled to room temperature, obtains the tread rubber for preparing high-performance tire.
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