CN106279797B

CN106279797B - A kind of Low-rolling-resistantire tire tread rubber composition and its tire of manufacture

Info

Publication number: CN106279797B
Application number: CN201610595437.3A
Authority: CN
Inventors: 郑兴荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-18
Filing date: 2016-07-18
Publication date: 2019-01-29
Anticipated expiration: 2036-07-18
Also published as: CN106279797A

Abstract

The present invention relates to a kind of Low-rolling-resistantire tire tread rubber composition and its tire of manufacture, it is used for the tire that specification is 175/70R13Q, belongs to tyre technology.It includes the raw materials of following parts by weight meter: natural rubber STR20 is 55~60, solution polymerized butadiene styrene rubber SSBR4525 is 20~25, neodymium series butadiene rubber BunaNd22EZ is 15~20, guayule 5, carbon black ECORAX1670 are 20~25, white carbon black ULTRASIL 5000GR is 30~35 etc.；Preparation method are as follows: by processes such as guayule preparation, mixer mixings, Low-rolling-resistantire tire tread rubber composition is made；By tread patterns designeds such as annular ribs, transverse pattern, siping, low rolling resistance tyre is made.The present invention provides the tire of a kind of Tire tread rubber composition and its manufacture, by optimization tyre surface formula, improve calendering process, improvement tread contour, and three is organically combined, while guaranteeing the performances such as tyre surface road holding, wearability and anti-slippery, reduce tire drag.

Description

A kind of Low-rolling-resistantire tire tread rubber composition and its tire of manufacture

Technical field

The present invention relates to a kind of tire, specifically a kind of Low-rolling-resistantire tire tread rubber composition and its manufacture Tire, belong to tyre technology.

Background technique

It is well known that flourishing with automobile industry, the increasingly depleted and people of fossil fuel are to environmental protection and energy saving Consciousness is increasingly enhanced, and the fuel consumption for how reducing automobile becomes automobile industry focus of attention.With European Union's reality in 2012 Mandatory tire tag regulation is applied, reducing tire drag becomes a hot topic of tyre industry, the rolling resistance of tire Oil consumption caused by power accounts for the 15% of total oil consumption, if tire drag reduces by 30%, reduces oil consumption 4.5%.In all compositions In the components such as tyre surface, sidewall, the carcass of tire, 50% or so only is accounted for by the rolling resistance that tyre surface generates, so research and development tire Face, the rolling resistance for reducing tire are to reduce one of the important measures of vehicle fuel consumption.

It is found by Indexing of Scien. and Tech. Literature, domestic and international tire enterprise is mostly from tyre surface formula, preparation method and tyre surface at present The one side of decorative pattern or two aspect research reduce tire drags, seldom from optimization tyre surface formula, improve calendering process and It improves three aspects of tread contour to start with simultaneously, organically combines three, achieve the purpose that reduce tire drag.

By retrieval, following two patent publication us relevant to present patent application are found.

1, a kind of super Formula of tread of low-rolling-resistantire tire disclosed in 105670065 A of CN and preparation method thereof and tire. A kind of ultralow rolling resistance tyre tread mix, the tread rubber is by including that the raw material of following components is kneaded system as mass fraction : 1:40.0-80.0 parts of Butadiene-Styrene Rubber；2:10.0-30.0 parts of Butadiene-Styrene Rubber；Cis-butadiene cement: 10.0-30.0 parts；High dispersive White carbon black: 50.0-110.0 parts；Aromatic naphtha: 5.0-40.0 parts；Silane coupling agent: 8.0-17.6 parts；Diphenylguanidine PG:1.0-4.0 Part；The high-dispersion white carbon black N2 adsorption specific surface area (NSA) is between 145-200m2/g.Using the wheel of the tread mix Tire rolling resistance reaches 6.0 hereinafter, sizing material items physical mechanical property and tire high speed, endurance quality meet normal use and want It asks.The patent is to reduce tire drag by optimization tyre surface formula, improvement calendering process.

2, a kind of tire tread of low-rolling-resistance disclosed in CN104853935A, including matched by least one first rubber Middle section (I) made of mixed object, and at least one circumferential direction that multiple pieces (1210) including being separated by siping are formed Rib (121-123)；By at least one second and third rubber compounding object the first and second side surface parts point (II and III) is made, should First and second side surface parts point (II and III) include at least one that multiple pieces (1310,1410) separated by siping are formed A circumferential rib (131,141)；Wherein it is described at least one second and value of the third rubber compounding object with tan δ < 0.25 (23 At a temperature of DEG C, under the frequency of 10Hz and 10% elongation), wherein the compound die of at least one first rubber compounding object Measure G* (T) be greater than it is described at least one second and compound die of the third rubber compounding object in all temperature of 0 DEG C≤T≤60 DEG C It measures G* (T).The patent is to reduce tire drag by improving tread contour.

Summary of the invention

The object of the invention is to provide a kind of tire tread rubber combination to overcome the shortcomings of prior art and technology Object and its tire of manufacture from optimization tyre surface formula, improve calendering process and start in terms of improving tread contour three, make three It organically combines, while guaranteeing the performances such as tyre surface road holding, wearability and anti-slippery, reduces tire drag.

The present invention solve above-mentioned technical problem the technical solution adopted is that: a kind of combination of low rolling resistance tyre tread-rubber Object, the raw material comprising following parts by weight meter:

Natural rubber STR20 is 50~70, solution polymerized butadiene styrene rubber SSBR4525 is 0~30, neodymium series butadiene rubber BunaNd22EZ is 0~20, guayule is 0~10, carbon black ECORAX1670 is 20~35, white carbon black ULTRASIL 5000GR For 20~35, silane coupling agent Si69 be 1.5~3.0, silane coupling agent KH580 is 0.2~0.4, White carbon black dispersant PEG4000 is 0.5~1.5, naphthenic oil NAP10 is 5.0~7.0, tackifying resin Koresin is 3.0~5.0, ZnO-80 5.0 ~7.0, stearic acid 1801 be 1.0~3.0, oil-filled type insoluble sulfur S be 1.5~2.5, accelerator TBSI is 1.0~2.0, Captax is 0.3~0.5, antioxidant A W is 0.5~1.5, antioxidant 4020 is 0.5~1.5, anti-scorching agent CTP -80 be 0.3~ 0.5, peptizer DBD is 0.3~0.5；

The natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ, guayule rubber The total number of rubber is 100 parts；

The carbon black ECORAX1670, white carbon black ULTRASIL 5000GR total number be 55 parts.

A kind of Low-rolling-resistantire tire tread rubber composition above-mentioned, preferred scheme include following parts by weight meter Raw material:

Natural rubber STR20 is 55~60, solution polymerized butadiene styrene rubber SSBR4525 is 20~25, neodymium series butadiene rubber BunaNd22EZ is 15~20, guayule is 0~5, carbon black ECORAX1670 is 20~25, white carbon black ULTRASIL 5000GR For 30~35, silane coupling agent Si69 be 2.5~3.0, silane coupling agent KH580 is 0.3~0.4, White carbon black dispersant PEG4000 is 1~1.5, naphthenic oil NAP10 is 6.0~7.0, tackifying resin Koresin is 4.0~5.0, ZnO-80 be 6.0~ 7.0, stearic acid 1801 is 2.0~3.0, oil-filled type insoluble sulfur S is 2.0~2.5, accelerator TBSI is 1.5~2.0, promotees Into agent M is 0.4~0.5, antioxidant A W is 1~1.5, antioxidant 4020 is 1~1.5, anti-scorching agent CTP -80 is 0.4~0.5, modeling Solving agent DBD is 0.4~0.5；

A kind of Low-rolling-resistantire tire tread rubber composition above-mentioned, more preferred scheme include following parts by weight The raw material of meter:

Natural rubber STR20 is 55, solution polymerized butadiene styrene rubber SSBR4525 is 25, neodymium series butadiene rubber BunaNd22EZ is 15, guayule 5, carbon black ECORAX1670 are 20, white carbon black ULTRASIL 5000GR is 35, silane coupling agent Si69 is 3, Silane coupling agent KH580 is 0.4, White carbon black dispersant PEG4000 is 1.5, naphthenic oil NAP10 is 6, tackifying resin Koresin For 4, ZnO-80 6, stearic acid 1801 be 2.5, oil-filled type insoluble sulfur S is 2, accelerator TBSI 1.5, captax are 0.4, antioxidant A W is 1, antioxidant 4020 1, anti-scorching agent CTP -80 are 0.4, peptizer DBD is 0.4；

A kind of Low-rolling-resistantire tire tread rubber composition above-mentioned, more preferably scheme include following parts by weight The raw material of meter:

Natural rubber STR20 is 60, solution polymerized butadiene styrene rubber SSBR4525 is 20, neodymium series butadiene rubber BunaNd22EZ is 20, guayule 0, carbon black ECORAX1670 are 20, white carbon black ULTRASIL 5000GR is 35, silane coupling agent Si69 is 3, Silane coupling agent KH580 is 0.4, White carbon black dispersant PEG4000 is 1.5, naphthenic oil NAP10 is 6, tackifying resin Koresin For 4, ZnO-80 6, stearic acid 1801 be 2, oil-filled type insoluble sulfur S is 2, accelerator TBSI 1.5, captax are 0.4, antioxidant A W is 1, antioxidant 4020 1, anti-scorching agent CTP -80 are 0.4, peptizer DBD is 0.4；

A kind of Low-rolling-resistantire tire tread rubber composition above-mentioned: the place of production natural rubber STR20 is Thailand；Contain intermingle with fourth Benzene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ are German Lanxess Corporation product；Carbon black ECORAX1670, white carbon black ULTRASIL 5000GR is Degussa Products；Silane coupling agent Si69, silane coupling agent KH580 are Nanjing dawn chemical industry Product；White carbon black dispersant PEG4000, antioxidant A W are Sinopec Nanjing chemical plant product；Naphthenic oil NAP10 is Liaohe River stone Change Products；Tackifying resin Koresin is BASF Corp. of Germany's product；1801 place of production of stearic acid is Malaysia；ZnO-80, Oil-filled type insoluble sulfur S, accelerator TBSI, captax, antioxidant 4020, anti-scorching agent CTP -80, peptizer DBD are Shandong The chemical inc Yanggu Hua Tai product；Guayule resin is non-commercial product, oneself preparation.

Recent domestic tire enterprise is dedicated to guayule resin research and development, reduces to natural rubber specific resources Interdependency avoids the risks such as its shortage of resources, price be surging.By the study found that the rhizome of guayule rubber is intradermal to be rich in natural rubber Glue, and (cultivation period of rubber tree is typically for up to 20 years to 25 years at present) can be harvested within 1 year to 2 years, so greatly developing Guayule resin has important strategic importance as the second Jiao Yuan of substitution natural rubber.Current foreign countries' tire enterprise is Accelerate exploitation guayule resin, achieve phasic results:

(1) " automobile and movement " the 10th phase page 175 in 2015 " Gu platinum tire guayule rubber substitution rubber project obtains breakthrough ": Late August, in year " research and development of Biomass Energy Technology " meeting that the U.S. is held, the U.S. Cooper consolidates platinum tire exhibition Show and extracted the progress that natural rubber raw material is used for Tire production project from guayule rubber, and in the north that it is located at Texas U.S. test center, rollout its to multiple components used completely guayule resin raw material concept tire carried out dryly, Wetland and the test of cross-country racing track.The plan is the development project that U.S. government's appropriation is dominated by solid platinum tire.

(2) " petrochemical industry " the 2nd phase page 187 of volume 45 in 2016, " bridgestone company developed first " guayule rubber " Natural rubber tire processed ": bridgestone company is dedicated to replacing the research of rubber tree using natural rubber, and being reached with this makes tire The diversified purpose of material.Company is successfully developed for the first time in the whole world using the natural rubber system extracted from " guayule rubber " At tire." guayule rubber " natural rubber of the tire used is developed by State of Arizona, US " guayule rubber " research institution Made of, the entire technical process of extraction is all made of the proprietary technology of bridgestone company from cultivating to refining.

A kind of Low-rolling-resistantire tire tread rubber composition above-mentioned, effective raw material are as follows:

(1) natural rubber STR20 is Thailand's standard rubber three-level glue, is generally used for production Outer Tyre, and comprehensive performance is excellent In synthetic rubber, there is excellent comprehensive physical mechanical performance, at normal temperature elasticity with higher, slightly band plasticity, has non- Often good mechanical strength, hysteresis loss is small, and in multiple deformation, heat is low, therefore its flexible resistance is also fine, electrical insulation capability Well；It is widely used with characteristics such as excellent resilience, insulating properties, water-resisting property and plasticity；With good processing technology Performance, since relative molecular mass is high, suitable molecular vibrational temperature is wide, strand is easy to be broken natural rubber, adds raw rubber In there are a certain number of gel moleculars, it is easy to plasticated, be kneaded, extruded.

(2) solution polymerized butadiene styrene rubber SSBR4525 produces tire and has both that rolling resistance is small, and anti-slippery is good, and wearability is high and drop The advantages that low burn oil consumption is the extraordinary original for manufacturing the high performance tires such as green tire, non-skid tyre, super lightweight tire Material；

(3) neodymium series butadiene rubber BunaNd22EZ modification technology can create long chain branching, to accelerate filler and rubber Fast and reliable integration, and improve processing technology；In addition, modification technology also enhances the mutually distribution between polymer, filler is in whole refining Therefore dispersion in compound is also improved, be the critical material for producing the high-performance tire of low-rolling-resistance.

(4) guayule is the part alternative materials of natural rubber STR20, reduces production cost, is reduced to natural rubber spy Determine the interdependency of resource.

(5) carbon black ECORAX1670 is the special carbon black of the low-rolling-resistance for tire tread of Degussa company production, It is combined by physical absorption, is applied to tire tread well.

(6) white carbon black ULTRASIL 5000GR disperses more uniformly in sizing material, compared with traditional carbon black filled glue, White carbon black, which fills glue, has preferable wet-sliding resistant performance and lower rolling resistance, becomes the main stuffing of manufacture green tire.

(7) silane coupling agent Si69 and silane coupling agent KH580 is used in combination, and effectively enhances mutual between rubber and filler Effect improves the dispersion of carbon black and white carbon black in rubber；It carries out surface to white carbon black to be modified, the coupling effect being optimal.

(8) White carbon black dispersant PEG4000 accelerates white carbon black mixing speed, and white carbon black is made to reach optimal point in sizing material Dissipate effect.

(9) antioxidant A W can prevent tyre surface cracking as caused by ozone, especially suitable for dynamic condition as tyre surface The lower rubber product used；It is used cooperatively with antioxidant 4020, enhances its efficiency.

(10) naphthenic oil NAP10 is environmental tire rubber oil product, has naphthene content high, with natural rubber, butylbenzene Rubber, butadiene rubber no-float have the ability of preferable resistance to flexion, drop compression heat generation, can significantly reduce the spies such as rolling resistance Point；It realizes application of the tire oil in rubber for tire industry of naphthenic base for the first time at home, and takes the lead in obtaining European Union's ring at home Protect monitoring certification.

(11) quasi-viscous effect of tackifying resin Koresin is preferable, and tack retention hour is longer, and sizing material can be greatly reduced Mooney viscosity, increase the dispersion degree of the rubber compound of sizing material；The process industrial art performance for improving sizing material, is that relatively good processing helps Agent；It is less on the influence of the curability of sizing material, it is relatively large to the raising of vulcanizating glue physical performance, have good comprehensive Energy.

(12) 1801 place of production of stearic acid is Malaysia, is the stearic primes of import, nontoxic, iodine number is lower, purity It is higher, it is the vulcanizing activator of natural gum, rubber polymer, it can also be used to which plasticizer also serves as softening agent.

(13) ZnO-80 is a kind of pre-dispersed extraordinary zinc oxide suitable for rubber industry, is new type rubber processing aid； Traditional ZnO powder is replaced with it, dust pollution can be reduced, be easily dispersed, reduces energy consumption, realizes energy-saving and emission-reduction；It is natural The vulcanizing activator of rubber and dience rubber can improve the crosslink density of vulcanizate, optimize the tensile property, resistance to old of vulcanizate Performance and wear-resisting property make it have lower rolling resistance and heat.

(14) oil-filled type insoluble sulfur S has good dispersion performance in sizing material process, in higher processing temperature Degree is lower to have high thermal stability, and being not susceptible to heat reverts, and effectively prevent sizing material crocking, when postponing bin aging incipient scorch to greatest extent Between, it avoids generating prevulcanization, improves process safety.It is oil-filled to help to improve product operation environment, reduce flying upward property of powder.

(15) accelerator TBSI is a kind of novel environmentally friendly promotor, has easily disperse, dosage is few, technological operation is safe etc. Feature has the function of scorch-delaying, the characteristic taken into account scorch-delaying, improved crosslink density and faster curingprocess rate, glue The curingprocess rate of material is slow, modulus is high, heat is low, and vulcanizate wearability is good, does not generate carcinogenic nitrosamine under curing temperature；With Acid accelerator M is simultaneously acted synergistically with generating, and activity significantly improves, and sulfurizing time is both shortened, when in turn ensuring incipient scorch Between, also improve the physical property of vulcanized rubber.

(16) anti-scorching agent CTP -80 be kneaded when can quickly be kneaded with fine dispersion and distribution, ensure that CTP's is best Activity, the vulcanization antiscorching agent as natural rubber and alkadienes synthetic rubber.

(17) peptizer DBD is the environmentally friendly peptizer of natural rubber, synthetic rubber or blend compounds.

A kind of preparation method of Low-rolling-resistantire tire tread rubber composition above-mentioned, comprising the following steps:

(1) guayule is prepared:

1. being mechanically pulverized.The guayule rubber flush with ground that grown 21~24 months is cut off, disleaf and flower are gone；By remaining stem Branch is cleaned, and after -4 DEG C refrigerate 24 hours, the fritter at 3~5mm is mechanically pulverized；

2. grinding dilution.The step water that 1. 10~15 times of solid weights are added in guayule rubber stem branch fritter obtained is carried out It grinds, forms homogenate after milled plant tissue, the water of 3~5 times of its weight of the homogenate after grinding is diluted；

3. filtering and impurity removing.By step, 2. homogenate obtained is filtered with coarse filter, removes plant residue；

4. adjusting PH glue existing.By step, 3. homogenate pH value obtained is adjusted to 10 to the sodium hydroxide solution for being 20% with concentration, quiet 1h is set, rubber particle suspension is made；

5. water is removed in centrifugation.By step 4. rubber particle suspension obtained, water is gone using supercentrifuge method, rubber is made Particle；

6. being kneaded drying.By step, 5. obtained rubber particle and anti-aging agent RD are kneaded according to 1: 0.005 mass ratio Uniformly, the rubber sheet of width 30cm, thickness 1cm is made；Rubber sheet is placed into 9h in 60 DEG C of drying chambers, guayule is made.

(2) mixer mixing

Calendering process first carries out in mixer, rotor speed of banbury mixer 55rpm, and wind pressure 0.75MPa is fastened on top on mixer, 25~35 DEG C of cooling water of banbury mixer temperature；

1. primary pressure is fastened: natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series is added from feeder nose of banbury mixer Butadiene rubber BunaNd22EZ, guayule, pressure fasten 36s；

2. secondary pressure is fastened: lifting top on mixer and fasten, carbon black ECORAX1670, white carbon black is added from feeder nose of banbury mixer ULTRASIL 5000GR, silane coupling agent Si69, silane coupling agent KH580, White carbon black dispersant PEG4000, pressure fastens 48s, close The control of sizing material temperature is at 138~142 DEG C in mill；

3. pressure is fastened three times: lifting top on mixer and fasten, naphthenic oil NAP10, tackifying resin is added from feeder nose of banbury mixer Koresin, stearic acid 1801, ZnO-80, antioxidant A W, antioxidant 4020, peptizer DBD, pressure fasten 56s；

4. four times pressure is fastened: lifting top on mixer and fasten, then pressure fastens 20s, glue stuff compounding in mixer is compacted, in discharge Portion's bubble；

5. dumping: when sizing material temperature reaches 158 DEG C in mixer, opening mixer discharge gate, discharge mixing sizing material is to opening In mill；

(3) mill mixing

Subsequent mixing carries out on a mill, and mixing glue is discharged from mixer, after falling on open mill, smashes glue 38s, makes glue Material temperature degree is down to 89~99 DEG C；

1. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight promotor is added M smashes glue 90s；

2. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight promotor is added M smashes glue 90s；

3. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight promotor is added M adds anti-scorching agent CTP -80, smashes glue 480s；

4. dumping: sizing material is controlled from open mill fluctuating plate, temperature at 80~85 DEG C；

(4) after being cooled to room temperature from the sizing material that open mill bottom sheet is discharged, low rolling resistance tyre tread-rubber group is made Close object.

A kind of low rolling resistance tyre made of a kind of Low-rolling-resistantire tire tread rubber composition above-mentioned, in tyre surface Groove and the land portion by the groove zoning are provided in portion；Fetus face includes: an edge wheel of the configuration in tire equator The narrow groove in longitudinal direction of the circumferentially continuous extension of tire configures on the outside of the two of tire equator and along a pair of of tire of the circumferentially continuous extension of tire It is preced with main line, outside of the configuration in a pair of of crown main line and a pair of of shoulder main groove slot, the comforter batt along the circumferentially continuous extension of tire It is preced with a pair of of tire crown land portion that main line and longitudinal narrow groove clip, the centering clipped by crown main line and shoulder main groove slot Between land portion and a pair of of tire-shoulder land portion on the outside of the tire axial of shoulder main groove slot；

Longitudinal narrow groove width is 3.0~3.5mm, and crown tap drain groove width is 5.0~5.5mm, shoulder main groove groove width For 5.0~5.5mm, crown tap drain groove width is identical with shoulder main groove groove width；Longitudinal narrow groove, crown main line and tire shoulder master The circumferential tap drains of groove three are conducive to tire and run at high speed and good anti-slippery, and reduce rolling resistance；

Tire crown land portion is respectively equipped with along the circumferentially continuous extension of tire, intermediate land portion and tire-shoulder land portion: along tire axis To extension and in the middle transverse groove of the circumferentially spaced setting of tire, tire-shoulder transverse groove；Middle transverse groove is connected with tire-shoulder transverse groove, laterally Groove improves the drainage performance of tire and the adhesive force in land portion from shoulder to middle part transition, reduces tire and rolls resistance Power；Middle transverse groove and tire-shoulder transverse groove are a plurality of inclination traverse furrow extended relative to tire peripheral, oblique, from the middle part of tyre surface to tire shoulder The cross groove of transition and the angle of center line are sequentially increased, and are conducive to the adhesive force for increasing tire, improve drainage performance, drop Low tire drag；Middle transverse groove width is 4.0~4.5mm, and tire-shoulder transverse groove width is 5.0~7.0mm, tire-shoulder transverse groove width It gradually broadens on the outside of tire axial；

Tire crown land portion is equipped with the first siping, and the first siping and tire axial angle are 30 °；Intermediate land Portion is equipped with the second siping, and the second siping and tire axial angle are 160 °；Tire-shoulder land portion is equipped with third knife Slot decorative pattern, third siping and tire axial angle are 10 °；

Longitudinal narrow groove, crown main line, shoulder main groove slot, tire crown land portion, intermediate land portion, tire-shoulder land portion, in Between traverse furrow, tire-shoulder transverse groove, the first siping, the second siping and third siping along tire equator bilateral symmetry, it is quiet Sound comfort is good, and tire drag is small.

Preferably, longitudinal narrow groove is linear type ribs slot；Side of the crown main line close to tire crown land portion Cell wall is that zigzag extends along tire circumferential direction alternate repetition, and jagged first re-entrant angle is 75 °, and crown main line is close to intermediate land The side cell wall in ground portion has second re-entrant angle in each intermediate land portion, and the second re-entrant angle is 90 °；Shoulder main groove slot is decorative pattern The ribs slot that ditch is slightly staggered relatively, three kinds of longitudinal narrow groove, crown main line and shoulder main groove slot organic knots of decorative pattern groove It closes, improves the road holding of tire, reduce tire drag.

It further include tire wear mark, tire ground terminal is arranged in along the outside of tire axle, tire in tire wear mark Abrasion are identified as 10 equal part of tire circumference and are evenly distributed with, and tire ground terminal is arranged in tire-shoulder land portion.

The beneficial effects of the invention are that: the present invention provides a kind of Low-rolling-resistantire tire tread rubber composition and its manufacture Tire, interacted in tread rubber composition between each effective raw material, be sufficiently kneaded, be uniformly dispersed, improve tire material Viscoplasticity, tire drag is effectively reduced；Using tire manufactured by the Tire tread rubber composition, pass through improvement Tread patterns designed reduces tire drag.The present invention provides the tire of a kind of Tire tread rubber composition and its manufacture, By optimization tyre surface formula, improve calendering process, improve tread contour, and organically combine three, guarantee tyre surface road holding, While the performances such as wearability and anti-slippery, achieve the purpose that reduce tire drag.

(1) solution polymerized butadiene styrene rubber SSBR4525 is used in tread rubber in wet-sliding resistant performance, main line face and the ice for improving tire While the road holding on road surface, tire drag is reduced.

(2) solution polymerized butadiene styrene rubber SSBR4525, white carbon black ULTRASIL 5000GR, silane coupling agent Si69 and KH580 tri- Person's reaction bonded can produce special viscoelastic body rubber, greatly reduce hysteresis loss, reduce rolling resistance.

(3) neodymium series butadiene rubber BunaNd22EZ can speed up filler and the fast and reliable integration of rubber, enhance between polymer Mutually distribution, improve filler eventually refining compound in dispersion, be produce low-rolling-resistance high-performance tire critical material.

(4) carbon black ECORAX1670 is the special carbon black of low-rolling-resistance for tire tread, white carbon black ULTRASIL 5000GR, which fills glue, has preferable wet-sliding resistant performance and lower rolling resistance, carbon black ECORAX1670 and white carbon black ULTRASIL 5000GR is used in combination, and can improve tyre surface physical property, while improving tire wet-sliding resistant performance, reduces tire Rolling resistance.

(5) naphthenic oil NAP10 and natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ no-float has the ability of preferable resistance to flexion, drop compression heat generation, can significantly reduce rolling resistance.

(6) ZnO-80 is a kind of pre-dispersed extraordinary zinc oxide suitable for rubber industry, is easily dispersed, reduces energy consumption, be The vulcanizing activator of natural rubber and dience rubber can optimize the tensile property, durability energy and wear-resisting property of vulcanizate, make It is with lower rolling resistance and heat.

(7) tire tread three circumferential tap drains: linear type ribs, sawtooth pattern and groove with re-entrant angle The ribs design being slightly staggered relatively, improves the road holding of tire, is conducive to run at high speed and good anti-slippery, and drops Low-rolling-resistance.

(8) tire tread cross groove is from shoulder to middle part transition, and is spent from tyre surface middle part to the transverse direction of tire shoulder transition The angle of groove and center line is sequentially increased, and improves the drainage performance of tire and the adhesive force in land portion, reduces tire rolling Dynamic resistance.

(9) tire tread pattern bilateral symmetry, mute comfort is good, and tire drag is small.

Detailed description of the invention

Fig. 1 is the partial structural diagram of tire tread in the embodiment of the present invention；

Symbol description in figure:

1. longitudinal narrow groove；2. crown main line；3. shoulder main groove slot；4. tire crown land portion；5. intermediate land portion；6. tire Shoulder land portion；7. middle transverse groove；8. tire-shoulder transverse groove；The first siping of 9A.；The second siping of 9B.；9C. third cutter groove flower Line；10. the first re-entrant angle；11. the second re-entrant angle；12. tire wear identifies；CL. tire equator；E. tire ground terminal；R. tire Rotation direction.

Specific embodiment

Below by specific embodiment, the invention will be further described, and it is not limit that following embodiment, which is descriptive, Qualitatively, this does not limit the scope of protection of the present invention.

Method used in the present invention is conventional production method unless otherwise required；Used reagent, such as nothing Particular provisions are conventional commercial product.

Comparative example:

A kind of low rolling resistance tyre tread glue formula, the raw material comprising following parts by weight meter:

Styrene butadiene rubber sbr is 8, emulsion polymerized styrene butadiene rubber ESBR is 25, solution polymerized butadiene styrene rubber SSBR is 42, butadiene rubber BR is 25, carbon black N234 is 30, high-dispersion white carbon black 40, active dispersing agents PEG are 2.5, organosilicon mixture TESPT is 3.2, ring Protect aromatic naphtha RAE be 8, zinc oxide 3, stearic acid 1.5, antioxidant 4020 2, anti-aging agent RD 1, protection wax 1, sulphur It is 3.5 with accelerant CZ, anti-scorching agent CTP 0.15.

A kind of preparation method of above-mentioned low rolling resistance tyre tread rubber, comprising the following steps:

(1) one section of mixing

One section of mixing carries out in GK580E type mixer, and rotor speed is speed change, and pressure pressure is 15~18MPa.

Calendering process are as follows: raw rubber, activator, activation dispersing agent and anti-aging agent etc. are added in mixer, press pressure 25s； Lift pressure, carbon black, white carbon black are added in mixer, pressure 30s is pressed；Lift pressure, RAE is added in mixer, pressure pressure 320s is cut or polish jade with an emery wheel, melting temperature is maintained at 145 DEG C；When sizing material temperature reaches 150 DEG C in mixer, from mixer discharge gate discharge one Section glue stuff compounding.

(2) two-stage mixing

Two-stage mixing carries out in GK255 type mixer, rotor speed 22rmin^-1, pressure pressure is 8~11MPa.

Calendering process are as follows: one section of glue stuff compounding, sulphur, promotor and antiscorching agent etc. are added in mixer, press pressure 45s；Lift pressure, then pressure 30s again；When sizing material temperature reaches 105 DEG C in mixer, it is discharged from mixer discharge gate Two-stage mixing sizing material.

(3) after being cooled to room temperature two-stage mixing sizing material, low rolling resistance tyre tread rubber is made.

Embodiment:

A kind of Low-rolling-resistantire tire tread rubber composition recipe ingredient and parts by weight described in embodiment 1,2,3,4,5 Such as each material content unit in table 1:(table 1 are as follows: parts by weight)

1 Tire tread rubber composition raw material of table and weight

Recipe ingredient	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5
						Natural rubber STR20	50	55	60	65	70
Solution polymerized butadiene styrene rubber SSBR4525	20	25	20	30	0
						Neodymium series butadiene rubber BunaNd22EZ	20	15	20	0	20
Guayule	10	5	0	5	10
						Carbon black ECORAX1670	25	20	20	30	35
White carbon black ULTRASIL 5000GR	30	35	35	25	20
						Silane coupling agent Si69	2.5	3	3	2	1.5
Silane coupling agent KH580	0.3	0.4	0.4	0.2	0.2
						White carbon black dispersant PEG4000	1	1.5	1.5	0.5	0.5
Naphthenic oil NAP10	7	6	6	5	5
						Tackifying resin Koresin	5	4	4	3	3
ZnO-80	7	6	6	5	5
						Stearic acid 1801	3	2.5	2	1.5	1
Oil-filled type insoluble sulfur S	2.5	2	2	1.5	1.5
						Accelerator TBSI	2	1.5	1.5	1	1
Captax	0.5	0.4	0.4	0.3	0.3
						Antioxidant A W	1.5	1	1	0.5	0.5
Antioxidant 4020	1.5	1	1	0.5	0.5
						Anti-scorching agent CTP -80	0.5	0.4	0.4	0.3	0.3
Peptizer DBD	0.5	0.4	0.4	0.3	0.3

A kind of Low-rolling-resistantire tire tread rubber composition described in above-described embodiment 1,2,3,4,5, natural rubber The place of production STR20 is Thailand；Solution polymerized butadiene styrene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ are that German Lanxess Corporation produces Product；Carbon black ECORAX1670, white carbon black ULTRASIL 5000GR are Degussa Products；Silane coupling agent Si69, silane are even Connection agent KH580 is Nanjing dawn chemical products；White carbon black dispersant PEG4000, antioxidant A W are Sinopec Nanjing chemical plant Product；Naphthenic oil NAP10 is Liaohe River petro-chemical corporation product；Tackifying resin Koresin is BASF Corp. of Germany's product；Stearic acid 1801 places of production are Malaysia；ZnO-80, oil-filled type insoluble sulfur S, accelerator TBSI, captax, antioxidant 4020, prevent Burnt agent CTP-80, peptizer DBD are Shandong Yanggu Huatai Chemical Industry Co., Ltd's product；Guayule resin is non-commercially available production Product, oneself preparation.

A kind of preparation method of Low-rolling-resistantire tire tread rubber composition described in above-described embodiment 1,2,3,4,5, The following steps are included:

(1) guayule is prepared:

2. grinding dilution.The step water that 1. 10 times of solid weights are added in guayule rubber stem branch fritter obtained is ground It grinds, forms homogenate after milled plant tissue, the water of 5 times of its weight of the homogenate after grinding is diluted；

(2) mixer mixing

(3) mill mixing

A kind of Low-rolling-resistantire tire tread rubber composition described in above-mentioned comparative example and embodiment 1,2,3,4,5, Vulcanizate test data is as shown in table 2:

2 Tire tread rubber composition vulcanizate test data of table

From table 2 it can be seen that the present invention possesses superior physical property compared with comparative example, and generally speaking, embodiment 3 It is optimal.

Tyre industry is it has been proved that the tread mix hysteresis loss factor (tan δ) at 60 DEG C is related with rolling resistance, and 60 DEG C when sizing material tan δ it is lower, the rolling resistance of tire is lower.From table 2 it can be seen that 3 sizing material tan δ of embodiment is minimum at 60 DEG C, Tire drag is also smaller, and embodiment 2 is taken second place.

One kind made of a kind of Low-rolling-resistantire tire tread rubber composition described in above-described embodiment 1,2,3,4,5 is low Rolling resistance tyre, the partial structural diagram of tire tread is as shown in Figure 1:

The direction of tire installation is designated, and arrow R indicates the rotation direction of tire, and CL indicates tire equator, and E indicates ground connection End.Groove and the land portion by the groove zoning are provided on the fetus face；The fetus face includes: configuration in tire equator (CL) two outsides and edge along the narrow groove in longitudinal direction (1), configuration of the circumferentially continuous extension of tire in tire equator (CL) on A pair of of crown main line (2) of the circumferentially continuous extension of tire, configuration a pair of of crown main line (2) outside and along tire circumferential direction A pair of of the shoulder main groove slot (3) being extended continuously, a pair of of the tire crown land clipped by crown main line (2) and longitudinal narrow groove (1) Portion (4) by the intermediate land portion (5) of a pair that crown main line (2) and shoulder main groove slot (3) clip and is located at shoulder main groove A pair of of tire-shoulder land portion (6) on the outside of the tire axial of slot (3).

Longitudinal narrow groove (1) width is 3.2mm, and crown main line (2) width is 5.3mm, and shoulder main groove slot (3) width is 5.3mm；Longitudinal narrow groove (1), crown main line (2) and shoulder main groove slot (3) three circumferential tap drains, are conducive to tire high speed row It sails and good anti-slippery, and reduces rolling resistance.

Tire crown land portion (4) is respectively equipped with along the circumferentially continuous extension of tire, intermediate land portion (5) and tire-shoulder land portion (6): Extend along tire axial and in the middle transverse groove of the circumferentially spaced setting of tire (7), tire-shoulder transverse groove (8), transverse pattern road pavement Road holding is good, wearability is excellent；Middle transverse groove (7) is connected with tire-shoulder transverse groove (8), and cross groove is from shoulder to middle part mistake It crosses, improves the drainage performance of tire and the adhesive force in land portion, reduce tire drag；Middle transverse groove (7) and tire shoulder Traverse furrow (8) is a plurality of inclination traverse furrow extended relative to tire peripheral, oblique, from the middle part of tyre surface to the transverse pattern of tire shoulder transition The angle of ditch and center line is sequentially increased, and is conducive to the adhesive force for increasing tire, is improved drainage performance, is reduced tire and is rolled resistance Power；Middle transverse groove (7) width is 4.2mm, and side width of the tire-shoulder transverse groove (8) close to shoulder main groove slot (3) is 5.0mm, tire shoulder Traverse furrow (8) width gradually broadens on the outside of tire axial, and tire-shoulder transverse groove (8) is 7.0mm along the outermost width of tire axial.

Tire crown land portion (4) is equipped with the first siping (9A), and the first siping (9A) is with tire axial angle 30°；Intermediate land portion (5) is equipped with the second siping (9B), and the second siping (9B) and tire axial angle are 160 °； Tire-shoulder land portion (6) is equipped with third siping (9C), and third siping (9C) and tire axial angle are 10 °, and first Siping (9A), the second siping (9B) and third siping (9C) and tire axial at an angle, guarantee tire Road holding, shorten braking distance.

Longitudinal narrow groove (1), crown main line (2), shoulder main groove slot (3), tire crown land portion (4), intermediate land portion (5), tire-shoulder land portion (6), middle transverse groove (7), tire-shoulder transverse groove (8), the first siping (9A), the second siping (9B) and Third siping (9C) is along tire equator (CL) bilateral symmetry, and mute comfort is good, and tire drag is small.

Longitudinal narrow groove (1) is linear type ribs slot；Side of the crown main line (2) close to tire crown land portion (4) Cell wall is that zigzag extends along tire circumferential direction alternate repetition, and jagged first re-entrant angle (10) is 75 °, and crown main line (2) leans on The side cell wall of nearly intermediate land portion (5) has second re-entrant angle (11), the second re-entrant angle (11) on each intermediate land portion (5) It is 90 °；Shoulder main groove slot (3) is the ribs slot that groove is slightly staggered relatively.Longitudinal narrow groove (1), crown main line (2) And (3) three kinds of decorative pattern grooves of shoulder main groove slot organically combine, and improve the road holding of tire, reduce tire drag.

It further include tire wear mark (12), tire wear identifies (12) and is arranged in tire ground terminal (E) along tire axle Outside, it is that 10 equal part of tire circumference is uniformly distributed that tire wear, which identifies (12), and tire ground terminal (E) setting is in tire-shoulder land portion (6) On.

A kind of Low-rolling-resistantire tire tread rubber composition described in above-described embodiment 1,2,3,4,5 is made specification and is 175/70R13Q, the low rolling resistance tyre of the partial structural diagram of tire tread such as Fig. 1 assemble 5J standard rim, are nothing Inner tube tyre carries out end properties test.By examining, the high speed performance of 1,2,3,4,5 tire of embodiment is more than 160km/ H, endurance quality reach 35.5h or more, exceed requirements of the national standard.

Tire drag is the energy loss of unit operating range, and tire drag coefficient is the rolling that newton indicates The ratio of resistance and the loading of tire indicated with newton, coefficient of rolling resistance is smaller, and tire drag is with regard to smaller.Embodiment 1, 2, the coefficient of rolling resistance of 3,4,5 tires is as shown in table 3:

3 embodiment tire drag of table

From table 3 it can be seen that the coefficient of rolling resistance of 3 tire of embodiment is minimum, rolling resistance is also minimum, and embodiment 2 is taken turns Parity it.

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest range of cause.

Claims

1. a kind of Low-rolling-resistantire tire tread rubber composition, is used for the tire that specification is 175/70R13Q, feature exists In: the raw material comprising following parts by weight meter:

Natural rubber STR20 is 55~60, solution polymerized butadiene styrene rubber SSBR4525 is 20~25, neodymium series butadiene rubber BunaNd22EZ For 15~20, guayule 5, carbon black ECORAX1670 be 20~25, white carbon black ULTRASIL 5000GR is 30~35, silane Coupling agent Si69 is 2.5~3.0, silane coupling agent KH580 is 0.3~0.4, White carbon black dispersant PEG4000 is 1~1.5, ring Alkane oil NAP10 is 6.0~7.0, tackifying resin Koresin is 4.0~5.0, ZnO-80 is 6.0~7.0, stearic acid 1801 is 2.0~3.0, oil-filled type insoluble sulfur S is 2.0~2.5, accelerator TBSI is 1.5~2.0, captax is 0.4~0.5, Antioxidant A W is 1~1.5, antioxidant 4020 is 1~1.5, anti-scorching agent CTP -80 is 0.4~0.5, peptizer DBD be 0.4~ 0.5；

The natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ, guayule it is total Number is 100 parts；

2. a kind of Low-rolling-resistantire tire tread rubber composition according to claim 1, it is characterised in that: comprising following The raw material of parts by weight meter:

Natural rubber STR20 is 55, solution polymerized butadiene styrene rubber SSBR4525 is 25, neodymium series butadiene rubber BunaNd22EZ is 15, silver Chrysanthemum glue is 5, carbon black ECORAX1670 is 20, white carbon black ULTRASIL 5000GR is 35, silane coupling agent Si69 is 3, silane is even Connection agent KH580 is 0.4, White carbon black dispersant PEG4000 is 1.5, naphthenic oil NAP10 is 6, tackifying resin Koresin is 4, ZnO-80 is 6, stearic acid 1801 is 2.5, oil-filled type insoluble sulfur S is 2, accelerator TBSI 1.5, captax 0.4, Antioxidant A W is 1, antioxidant 4020 1, anti-scorching agent CTP -80 are 0.4, peptizer DBD is 0.4；

3. a kind of preparation method of Low-rolling-resistantire tire tread rubber composition according to claim 1 or 2, feature It is: the following steps are included:

(1) guayule is prepared:

1. being mechanically pulverized: the guayule rubber flush with ground that grown 21~24 months being cut off, disleaf and flower are gone；Remaining stem branch is washed Only, after -4 DEG C refrigerate 24 hours, the fritter at 3~5mm is mechanically pulverized；

2. grinding dilution: the step water that 1. 10~15 times of solid weights are added in guayule rubber stem branch fritter obtained is ground It grinds, forms homogenate after milled plant tissue, the water of 3~5 times of its weight of the homogenate after grinding is diluted；

3. filtering and impurity removing: by step, 2. homogenate obtained is filtered with coarse filter, removes plant residue；

4. adjusting PH glue existing: by step, 3. homogenate pH value obtained is adjusted to 10 to the sodium hydroxide solution for being 20% with concentration, stands 1h, Rubber particle suspension is made；

5. water is removed in centrifugation: by step 4. rubber particle suspension obtained, removing water using supercentrifuge method, it is micro- that rubber is made Grain；

6. being kneaded drying: by step, 5. rubber particle and anti-aging agent RD obtained are uniform according to 1: 0.005 mass ratio mixing, The rubber sheet of width 30cm, thickness 1cm is made；Rubber sheet is placed into 9h in 60 DEG C of drying chambers, guayule is made；

(2) mixer mixing

Calendering process first carries out in mixer, rotor speed of banbury mixer 55rpm, and wind pressure 0.75MPa, mixing are fastened in top on mixer 25~35 DEG C of machine cooling water temperature；

1. primary pressure is fastened: natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series are added along fourth from feeder nose of banbury mixer Rubber BunaNd22EZ, guayule, pressure fasten 36s；

4. four times pressure is fastened: lifting top on mixer and fasten, then pressure fastens 20s, and glue stuff compounding in mixer is compacted, and internal gas is discharged Bubble；

5. dumping: when sizing material temperature reaches 158 DEG C in mixer, opening mixer discharge gate, discharge mixing sizing material to open mill On；

(3) mill mixing

Subsequent mixing carries out on a mill, and mixing glue is discharged from mixer, after falling on open mill, smashes glue 38s, makes sizing material temperature Degree is down to 89~99 DEG C；

1. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight captax is added, smash Glue 90s；

2. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight captax is added, smash Glue 90s；

3. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight captax is added, then Anti-scorching agent CTP -80 is added, smashes glue 480s；

(4) after being cooled to room temperature from the sizing material that open mill bottom sheet is discharged, Low-rolling-resistantire tire tread rubber composition is made.

4. a kind of low rolling made of a kind of Low-rolling-resistantire tire tread rubber composition according to claim 1 or 2 Adhesive type tyre is provided with groove and the land portion by the groove zoning on fetus face；The fetus face includes: that configuration is being taken turns One on tire equator (CL) along the narrow groove in longitudinal direction (1) of the circumferentially continuous extension of tire, configuration outside the two of tire equator (CL) Side and along a pair of of crown main line (2) of the circumferentially continuous extension of tire, configuration a pair of crown main line (2) outside and Along a pair of of shoulder main groove slot (3) of the circumferentially continuous extension of tire, by the narrow groove of the crown main line (2) and the longitudinal direction (1) A pair of of the tire crown land portion (4) clipped, a pair of the centre clipped by the crown main line (2) and the shoulder main groove slot (3) Land portion (5) and a pair of of the tire-shoulder land portion (6) being located on the outside of the tire axial of the shoulder main groove slot (3), feature exists In:

The narrow groove in longitudinal direction (1) width is 3.0~3.5mm, and crown main line (2) width is 5.0~5.5mm, described Shoulder main groove slot (3) width is 5.0~5.5mm, crown main line (2) width and the shoulder main groove slot (3) width phase Together；

The tire crown land portion (4) is along the circumferentially continuous extension of tire, the intermediate land portion (5) and the tire-shoulder land portion (6) It is respectively equipped with: extending along tire axial and in the middle transverse groove of the circumferentially spaced setting of tire (7), tire-shoulder transverse groove (8)；In described Between traverse furrow (7) be connected with the tire-shoulder transverse groove (8), the middle transverse groove (7) and the tire-shoulder transverse groove (8) are relative to tire The a plurality of inclination traverse furrow that peripheral, oblique extends；Middle transverse groove (7) width is 4.0~4.5mm, and the tire-shoulder transverse groove (8) is wide Degree is 5.0~7.0mm, and tire-shoulder transverse groove (8) width gradually broadens on the outside of tire axial；

The tire crown land portion (4) is equipped with the first siping (9A), and first siping (9A) and tire axial press from both sides Angle is 30 °；The intermediate land portion (5) is equipped with the second siping (9B), second siping (9B) and tire axis It is 160 ° to angle；The tire-shoulder land portion (6) is equipped with third siping (9C), the third siping (9C) and wheel Tire axial angle is 10 °；

The narrow groove in longitudinal direction (1), crown main line (2), shoulder main groove slot (3), tire crown land portion (4), intermediate land portion (5), tire-shoulder land portion (6), middle transverse groove (7), tire-shoulder transverse groove (8), the first siping (9A), the second siping (9B) and Third siping (9C) is along the tire equator (CL) bilateral symmetry；

The narrow groove in longitudinal direction (1) is linear type ribs slot；The crown main line (2) is close to the tire crown land portion (4) side cell wall is that zigzag extends along tire circumferential direction alternate repetition, and jagged first re-entrant angle (10) is 75 °, institute The side cell wall that crown main line (2) are stated close to the intermediate land portion (5) has one on each intermediate land portion (5) Second re-entrant angle (11), second re-entrant angle (11) are 90 °；Shoulder main groove slot (3) is the ribs that groove is slightly staggered relatively Slot.

5. a kind of low rolling resistance tyre according to claim 4, it is characterised in that: further include tire wear mark (12), tire wear mark (12) setting is in tire ground terminal (E) along the outside of tire axle, the tire wear mark (12) uniformly distributed for 10 equal part of tire circumference, the tire ground terminal (E) is arranged on the tire-shoulder land portion (6).

6. a kind of Low-rolling-resistantire tire tread rubber composition, is used for the tire that specification is 175/70R13Q, feature exists In: the raw material comprising following parts by weight meter: natural rubber STR20 is 60, solution polymerized butadiene styrene rubber SSBR4525 is 20, neodymium series are along fourth Rubber BunaNd22EZ is 20, carbon black ECORAX1670 is 20, white carbon black ULTRASIL 5000GR is 35, silane coupling agent Si69 is 3, silane coupling agent KH580 is 0.4, White carbon black dispersant PEG4000 is 1.5, naphthenic oil NAP10 is 6, tackifying resin Koresin is 4, ZnO-80 6, stearic acid 1801 are 2, oil-filled type insoluble sulfur S is 2, accelerator TBSI 1.5, is promoted Agent M is 0.4, antioxidant A W is 1, antioxidant 4020 1, anti-scorching agent CTP -80 are 0.4, peptizer DBD is 0.4；It is described natural Rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series butadiene rubber BunaNd22EZ total number be 100 parts；The carbon black ECORAX1670, white carbon black ULTRASIL 5000GR total number be 55 parts；

A kind of preparation method of the Low-rolling-resistantire tire tread rubber composition, comprising the following steps:

(1) mixer mixing

1. primary pressure is fastened: natural rubber STR20, solution polymerized butadiene styrene rubber SSBR4525, neodymium series are added along fourth from feeder nose of banbury mixer Rubber BunaNd22EZ, pressure fasten 36s；

(2) mill mixing

2. the oil-filled type insoluble sulfur S of 1/3 parts by weight, 1/3 parts by weight accelerator TBSI, 1/3 parts by weight captax is added, smash Glue 90s

(3) after being cooled to room temperature from the sizing material that open mill bottom sheet is discharged, the low rolling resistance tyre tread-rubber group is made Close object；

A kind of low rolling resistance tyre made of a kind of Low-rolling-resistantire tire tread rubber composition, sets on fetus face It is equipped with groove and the land portion by the groove zoning；The fetus face includes: an edge of the configuration on tire equator (CL) The narrow groove in longitudinal direction (1) of the circumferentially continuous extension of tire, configuration tire equator (CL) two outsides and prolong along tire is circumferentially continuous A pair of of crown main line (2) for stretching, configuration a pair of crown main line (2) outside and along the circumferentially continuous extension of tire A pair of of shoulder main groove slot (3), a pair of of the tire crown land portion clipped by the narrow groove of the crown main line (2) and the longitudinal direction (1) (4), by the intermediate land portion (5) of a pair that the crown main line (2) and the shoulder main groove slot (3) clip and it is located at institute State a pair of of tire-shoulder land portion (6) on the outside of the tire axial of shoulder main groove slot (3)；The narrow groove in longitudinal direction (1) width be 3.0~ 3.5mm, crown main line (2) width are 5.0~5.5mm, and shoulder main groove slot (3) width is 5.0~5.5mm, institute It states crown main line (2) width and the shoulder main groove slot (3) is of same size；The tire crown land portion (4) circumferentially connects along tire It renews and stretches, the intermediate land portion (5) and the tire-shoulder land portion (6) are respectively equipped with: extending along tire axial and in tire week Middle transverse groove (7), the tire-shoulder transverse groove (8) of spaced up setting；The middle transverse groove (7) is connected with the tire-shoulder transverse groove (8), The middle transverse groove (7) and the tire-shoulder transverse groove (8) are a plurality of inclination traverse furrow extended relative to tire peripheral, oblique；In described Between traverse furrow (7) width be 4.0~4.5mm, tire-shoulder transverse groove (8) width be 5.0~7.0mm, tire-shoulder transverse groove (8) width It gradually broadens on the outside of tire axial；The tire crown land portion (4) is equipped with the first siping (9A), the first cutter groove flower Line (9A) and tire axial angle are 30 °；The intermediate land portion (5) is equipped with the second siping (9B), second knife Slot decorative pattern (9B) and tire axial angle are 160 °；The tire-shoulder land portion (6) is equipped with third siping (9C), and described the Three siping (9C) and tire axial angle are 10 °；The narrow groove in longitudinal direction (1), crown main line (2), shoulder main groove slot (3), tire crown land portion (4), intermediate land portion (5), tire-shoulder land portion (6), middle transverse groove (7), tire-shoulder transverse groove (8), the first knife Slot decorative pattern (9A), the second siping (9B) and third siping (9C) are along the tire equator (CL) bilateral symmetry；It is described Longitudinal narrow groove (1) is linear type ribs slot；The crown main line (2) is close to the side of the tire crown land portion (4) Cell wall is that zigzag extends along tire circumferential direction alternate repetition, and jagged first re-entrant angle (10) is 75 °, the crown tap drain Slot (2) has second re-entrant angle on each intermediate land portion (5) close to the side cell wall of the intermediate land portion (5) (11), second re-entrant angle (11) is 90 °；Shoulder main groove slot (3) is the ribs slot that groove is slightly staggered relatively；The wheel Tire includes tire wear mark (12), and tire wear mark (12) setting is in tire ground terminal (E) along the outer of tire axle Side, the tire wear mark (12) is uniformly distributed for 10 equal part of tire circumference, and the tire ground terminal (E) is arranged in the tire shoulder land In ground portion (6).