CN109438787A - A kind of collateral support rubber of run-flat tire, preparation method and tire construction - Google Patents
A kind of collateral support rubber of run-flat tire, preparation method and tire construction Download PDFInfo
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- CN109438787A CN109438787A CN201811292698.3A CN201811292698A CN109438787A CN 109438787 A CN109438787 A CN 109438787A CN 201811292698 A CN201811292698 A CN 201811292698A CN 109438787 A CN109438787 A CN 109438787A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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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
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Tyre Moulding (AREA)
Abstract
The present invention relates to tyre technology, the collateral support rubber of especially a kind of run-flat tire, preparation method and tire construction.The neodymium series butadiene rubber that sizing material of the invention uses is that have high-cis -1 using neodymium compound as what major catalyst obtained, the polybutadiene of 4- structural content, make that rubber is supported to have higher tensile property, resilience performance, carbon black dispersion performance is good, ageing-resistant performance is more excellent, white carbon black uses high dispersive low surface area 1115MP type, high dispersive type low surface area white carbon black is while effectively improving support rubber components tear-proof and heat aging property, 15% thermogenesis performance is effectively reduced, pass through the sizing compound formula of relay, make support rubber obtained that there is stronger tear-proof, Gao Dingshen, it is high-intensitive, the physical characteristics such as high temperature resistant；It can guarantee tire under zero atmospheric pressure state by the special designing and proportion of structure and formula aspect, remain to continue to travel with the speed of 80km/h, steering wheel will not deviate driving direction easily in driving process, until finding next maintenace point.
Description
Technical field
The present invention relates to tyre technology, the collateral support rubber of especially a kind of run-flat tire, preparation method and
Tire construction.
Background technique
Today's society safety is most important in running car, and tire plays conclusive work to the safety of automobile
With.Common passenger vehicle tyre sidewall thinner thickness, there is some security risks in the process of moving.Such as: encountering horse
When road dentiscalprum rubs or hard object squeezes, it is easy to produce sidewall rupture gas leakage or causes to blow out, cause automobile steering failure normal
Traveling, serious person cause car crash major accident.
General tire is after losing tire pressure, and tire can be detached from wheel rim, and the brace type structure that tyre sidewall thickeies makes tire
Play the role of supporting vehicle weight after losing heart.The reason is that special rubber components is added at tire sidewall position, make to take turns mould
Standby certain enabling capabilities.Guarantee that tire under zero atmospheric pressure state, remains to drive to next maintenace point with the speed of 80km/h.
But there are problems that one in actual use: sidewall supports rubber to achieve the purpose that support, sizing material hardness compared with
Height, usually more with carbon black filled comparison, tire is in normal use process because the sidewall higher influence of support rubber hardness is driven by bus
Sail comfort.And tire is bigger because being formulated heat in zero air pressure rear support rubber, support rubber is easy disconnected in use
The bad problem of rhegma.
Summary of the invention
The purpose of the present invention is to provide a kind of collateral support rubber of run-flat tire, preparation method and tire construction,
Overcome aforementioned the shortcomings of the prior art,
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of collateral support rubber of run-flat tire, is mainly made of the raw material of following parts by weight: isoprene rubber 30-50
Part, 40-60 parts of neodymium series butadiene rubber, 30-50 parts of carbon black N550,15-20 parts of white carbon black, 2-3 parts of liquid silane coupling agent, oxygen
Change -80 8-10 parts of zinc, 2 parts of stearic acid, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 6PPD, 0.5 part of paraffin, insoluble sulfur
2.5 parts, 2.5 parts of accelerator TBBS and 0.04 part of anti-scorching agent CTP.
A kind of preparation method of the collateral support rubber of run-flat tire, including following preparation step:
(1) isoprene rubber, neodymium series butadiene rubber, carbon black N550, the white carbon black, liquid of predetermined weight number milling maternal rubber: are taken
Body silane coupling agent, zinc oxide -80, stearic acid, anti-aging agent 6PPD, anti-aging agent RD, paraffin are kneaded after mixer is added, and are mixed
Refining initial temperature is 45 DEG C, and rotor speed 50r/min is sufficiently mixed sizing material, and dumping obtains rubber master batch A when temperature reaches 155 DEG C；
(2) park cooling: after rubber master batch A obtained by step (1) is carried out cooling by Fan Cooling System, it is small that room temperature parks at least 4
When obtain rubber master batch A1.
(3) rubber master batch back mixing: mixer is added in rubber master batch A1 cooling in step (2) and carries out back mixing, spinner velocity is set as
50r/min reaches 150 DEG C to sizing material temperature, and dumping obtains rubber master batch B；
(4) it parks cooling: carrying out rubber master batch B obtained in step (3) to be cooled to room temperature by Fan Cooling System, and in room temperature
It is lower to place at least 4 hours to obtain rubber master batch B1；
(5) refining is kneaded eventually: by the insoluble sulfur of rubber master batch B1 made from step (4) and predetermined weight number, accelerator TBBS, being prevented
Burnt agent CTP, which is added together in mixer, carries out refining mixing eventually, and rotor speed is set as 30r/min, when rubber compounding is lower than 100 DEG C
Dumping to get.
A kind of run-flat side brace type tire construction, the tire construction include by wire loop (1) and triangle rubber (2) group
At tyre bead (10), liner layer (3), 1# carcass ply (4), 2# carcass ply (5), support rubber (6), 1# belt (7), 2#
Belt (8), band (9), tyre surface (11) and sidewall (12).
Preferably, each component part is sequentially distributed by tyre surface (11) to liner layer (3) along section perpendicular bisector (13), tire
The base rubber in face (11) is band (9) below base rubber, is 2# band below band (9) with a thickness of 2.2mm-2.5mm
Beam layer (8) is 1# belt (7) below 2# belt (8), and band (9) is to 2# belt (8) and 1# belt (7)
It is fettered, 1# belt (7) both ends are sidewall (12) amounts of being encased inside, and are carried out after the alar part glue of tyre surface (11) and sidewall (12) vulcanization
Fusion, 1# belt (7) are 2# carcass ply (5) below, are 1# carcass ply (4), 1# carcass below 2# carcass ply (5)
It is liner layer (3) below cord (4).
Preferably, the run-flat side brace type tire construction profile height position (14) distribution from inside to outside according to
Secondary distribution are as follows: innermost is liner layer (3), be bonded outward with liner layer (3) be support rubber (6), outward with support rubber
(6) fitting is 1# casingply (4), and what is be bonded with 1# casingply (4) is 2# casingply (5,1# carcass
Layer of cloth (4) and 2# casingply (5) 2# casingply (5) and triangle rubber (2) after tyre bead (10) progress anti-package, anti-package
It is bonded, is bonded after 1# casingply (4) anti-package with sidewall (12), outermost is sidewall (12).
Preferably, the support rubber (6) fits closely with liner layer (3) and 1# casingply (4), supports rubber
(6) the edge 20mm-25mm of upper end distance 1# belt (7) supports the lower end of rubber (6) apart from wire loop (1) 7mm-
10mm。
Preferably, crescent shape shape is presented in the support rubber (6), and thickness is gradually increased by both ends to centre, shape
Symmetrical mode is presented, most thick part thickness is 8mm-10mm, and hardness is -80 shore of 72 shore.
A kind of production method of run-flat side brace type tire construction, the molding mode used is secondary method mode, system
Work sequence are as follows:
(1) one section: tyre bead-assembly drum contraction-liner layer-assembly drum rising-support rubber -1# carcass ply -2# carcass ply -
Buckle ring anti-package-rolling-sidewall-rolling；
(2) two sections: 1# belt -2# belt-band-tyre surface-carries out component rolling with one section of tire cylinder.
Preferably, the intermediate waistband of the assembly drum is changed to rubber belt track product by aluminum product, and the aluminium flake on both sides is downward
Inclination.
Preferably, the liner layer (3) is with a thickness of 1.5mm-2.0mm, assembly drum in the state of contracting drum, be bonded in
Lining, is carrying out the drum that rises after the completion of fitting；After being bonded liner layer (3), support rubber (6) is bonded according to beacon light line, complete cycle gets off
Slope is needed to overlap；Then 1# carcass ply (4) are bonded, need to be rolled with idler wheel after the completion, increased viscous between component
It is right；8 Mpa-the 10Mpa of elasticity modulus of the support rubber (6) of selection.
The beneficial effects of the present invention are: compared with prior art, a kind of collateral support rubber of run-flat tire of the invention,
Preparation method and tire construction have the advantages that
(1) compared with existing support rubber technology, the collateral support rubber physical mechanical property of support rubber tyre of the invention is good, heat
Performance is low, and under the premise of keeping compound physical performance, the neodymium series butadiene rubber that sizing material uses is using neodymium compound as major catalyst
Obtain have high-cis-Isosorbide-5-Nitrae-structural content polybutadiene, make support rubber have higher tensile property, resilience performance,
Carbon black dispersion performance is good, ageing-resistant performance is more excellent, and white carbon black uses high dispersive low surface area 1115MP type, and high dispersive type is low
15% life is effectively reduced while effectively improving support rubber components tear-proof and heat aging property in surface area white carbon black
Hot property makes support rubber obtained have stronger tear-proof, Gao Dingshen, high intensity, resistance to height by the sizing compound formula of relay
The physical characteristics such as temperature；
(2) the support rubber for increasing sidewall inner wall according to the present invention, as explosion-proof layer；Explosion-proof layer has stronger puncture
Can, gas leakage caused by effectivelying prevent because of tire puncture is blown out, since explosion-proof layer has the physics such as high intensity, high temperature resistant, tear-proof
Characteristic can wrap up foreign matter when penetrating iron nail foreign matter in time, prevent gas leakage decompression；Support rubber that sidewall can be made to keep good simultaneously
Good deflects and shock-absorbing comfort property；
(3) formula is designed using soft formula while improving sizing material mechanical performance, and it is 72 that Shore A hardness, which detects numerical value,
Degree, this support rubber compounding make while the requirement of 80km can be travelled by meeting requirements of the national standard under zero atmospheric pressure state
It is more comfortable that tire drives impression in normal use process；
(4) it can guarantee that tire under zero atmospheric pressure state, is remained to 80km/ by the special designing and proportion of structure and formula aspect
The speed of h continues to travel, and steering wheel will not deviate driving direction easily in driving process, real until finding next maintenace point
The purpose of existing safe driving.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of run-flat side brace type tire construction of the present invention；
Fig. 2 is present invention support half component schematic shapes of rubber；
Fig. 3 is the section shape of assembly drum in the present invention；
Wherein 1, wire loop, 2, triangle rubber, 3, liner layer, 4,1# carcass ply, 5,2# carcass ply, 6, support rubber, 7,1#
Belt, 8,2# belt, 9, band, 10, tyre bead, 11, tyre surface, 12, sidewall, 13, section perpendicular bisector, 14, profile height.
Specific embodiment
A kind of collateral support rubber of the run-flat tire of embodiment 1
A kind of collateral support rubber of run-flat tire, is mainly made of the raw material of following parts by weight: 40 parts of isoprene rubber,
It is 50 parts of neodymium series butadiene rubber, 40 parts of carbon black N550,18 parts of white carbon black, 2 parts of liquid silane coupling agent, 9 parts of zinc oxide -80, hard
2 parts of resin acid, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 6PPD, 0.5 part of paraffin, 2.5 parts of insoluble sulfur, accelerator TBBS
2.5 parts and 0.04 part of anti-scorching agent CTP.
A kind of collateral support rubber of the run-flat tire of embodiment 2
A kind of collateral support rubber of run-flat tire, is mainly made of the raw material of following parts by weight: 30 parts of isoprene rubber,
It is 40 parts of neodymium series butadiene rubber, 30 parts of carbon black N550,15 parts of white carbon black, 2 parts of liquid silane coupling agent, 8 parts of zinc oxide -80, hard
2 parts of resin acid, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 6PPD, 0.5 part of paraffin, 2.5 parts of insoluble sulfur, accelerator TBBS
2.5 parts and 0.04 part of anti-scorching agent CTP.
A kind of collateral support rubber of the run-flat tire of embodiment 3
A kind of collateral support rubber of run-flat tire, is mainly made of the raw material of following parts by weight: 50 parts of isoprene rubber,
60 parts of neodymium series butadiene rubber, 50 parts of carbon black N550,20 parts of white carbon black, 3 parts of liquid silane coupling agent, 10 parts of zinc oxide -80,
2 parts of stearic acid, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 6PPD, 0.5 part of paraffin, 2.5 parts of insoluble sulfur, promotor
2.5 parts and 0.04 part of anti-scorching agent CTP of TBBS.
A kind of preparation method of the collateral support rubber of the run-flat tire of embodiment 4
A kind of preparation method of the collateral support rubber of run-flat tire, including following preparation step:
(1) isoprene rubber, neodymium series butadiene rubber, carbon black N550, the white carbon black, liquid of predetermined weight number milling maternal rubber: are taken
Body silane coupling agent, zinc oxide -80, stearic acid, anti-aging agent 6PPD, anti-aging agent RD, paraffin are kneaded after mixer is added, and are mixed
Refining initial temperature is 45 DEG C, and rotor speed 50r/min is sufficiently mixed sizing material, and dumping obtains rubber master batch A when temperature reaches 155 DEG C；
Technical parameter setting is as shown in table 1 during milling maternal rubber:
(2) park cooling: after rubber master batch A obtained by step (1) is carried out cooling by Fan Cooling System, room temperature is parked 4 hours
Rubber master batch A1；
(3) rubber master batch back mixing: mixer is added in rubber master batch A1 cooling in step (2) and carries out back mixing, spinner velocity is set as 50r/
Min reaches 150 DEG C to sizing material temperature, and dumping obtains rubber master batch B；
Rubber master batch back mixing process technology parameter setting is as shown in table 2:
(4) it parks cooling: carrying out rubber master batch B obtained in step (3) to be cooled to room temperature by Fan Cooling System, and in room temperature
It is lower to place 4 hours to obtain rubber master batch B1；
(5) refining is kneaded eventually: by the insoluble sulfur of rubber master batch B1 made from step (4) and predetermined weight number, accelerator TBBS, being prevented
Burnt agent CTP, which is added together in mixer, to carry out refining eventually and is kneaded, and rotor speed is set as 30r/min, and 90-95 DEG C of rubber compounding when arranges
Glue to get；
The design of refining mixing process technical parameter is as shown in table 3 eventually:
A kind of run-flat side brace type tire construction of embodiment 5
As shown in Figure 1, a kind of run-flat side brace type tire construction, the tire construction include by wire loop 1 and triangle rubber
2 composition tyre bead 10, liner layer 3,1# carcass ply 4,2# carcass ply 5, support rubber 6,1# belt 7,2# belt 8,
Band 9, tyre surface 11 and sidewall 12.
In the present embodiment, each component part is sequentially distributed by tyre surface 11 to liner layer 3 along section perpendicular bisector 13, tyre surface
11 base rubber is band 9 below base rubber, is 2# belt 8,2# below band 9 with a thickness of 2.2mm-2.5mm
It is 1# belt 7 below belt 8, and band 9 fetters 2# belt 8 and 1# belt 7,7 liang of 1# belt
End is 12 amount of being encased inside of sidewall, and the alar part glue of tyre surface 11 is merged after vulcanizing with sidewall 12, and 1# belt 7 is 2# carcass below
Cloth 5 is 1# carcass ply 4 below 2# carcass ply 5, is liner layer 3 below 1# carcass ply 4.
In the present embodiment, the run-flat side brace type tire construction profile height position 14 distribution from inside to outside
It is sequentially distributed are as follows: innermost is liner layer 3, and being bonded outward with liner layer 3 is support rubber 6, is bonded outward with support rubber 6
Be 1# casingply 4, what is be bonded with 1# casingply 4 is 2# casingply 5,1# casingply 4 and 2# carcass
Casing ply 5 carries out anti-package around tyre bead 10, and 2# casingply 5 is bonded with triangle rubber 2 after anti-package, 1# casingply 4
It is bonded after anti-package with sidewall 12, outermost is sidewall 12.
In the present embodiment, the support rubber 6 is fitted closely with liner layer 3 and 1# casingply 4, support rubber 6
The edge 20mm-25mm of upper end distance 1# belt 7 supports the lower end of rubber 6 apart from wire loop 17mm-10mm.
As shown in Fig. 2, crescent shape shape is presented in the support rubber 6, thickness is gradually increased by both ends to centre, shape
Symmetrical mode is presented, most thick part thickness is 8mm-10mm, and hardness is -80 shore of 72 shore.
A kind of production method of the run-flat side brace type tire construction of embodiment 6
A kind of production method of run-flat side brace type tire construction, the molding mode used make suitable for secondary method mode
Sequence are as follows:
(1) one section: tyre bead-assembly drum contraction-liner layer-assembly drum rising-support rubber -1# carcass ply -2# carcass ply -
Buckle ring anti-package-rolling-sidewall-rolling；
(2) two sections: 1# belt -2# belt-band-tyre surface-carries out component rolling with one section of tire cylinder.
As shown in figure 3, the intermediate waistband of the assembly drum is changed to rubber belt track product by aluminum product, the aluminium flake on both sides to
Lower inclination, the angle tilted down are 20 °.
The liner layer 3 carries out fitting liner, has been bonded with a thickness of 1.5mm-2.0mm, assembly drum in the state of contracting drum
The drum that rises is being carried out after, therefore there can be slight stretching to lining components；After being bonded liner layer 3, branch is bonded according to beacon light line
Rubber 6 is supportted, complete cycle, which gets off, needs slope to overlap；Then it is bonded 1# carcass ply 4, needs to be rolled with idler wheel after the completion, is increased
Degree of adhesion between made component.And the fitting of other component is identical as common molding mode.
The height of triangle rubber 2 uses the form of low triangle rubber, it is therefore an objective to avoid and support being overlapped for 6 stress of rubber, equally
Endurance quality, the preferably 8 Mpa -10Mpa of elasticity modulus of sidewall support rubber 6 are improved reducing fever when driving.
Vulcanization process needs to lengthen vulcanization time and avoids influencing to prevent the problem of owing sulphur in 3min-6min or so
Endurance test under zero atmospheric pressure state, and the toolings such as curing bag, chuck are similar with common specification.
Support the shape of rubber 6 will be using the design method of seriation, it is therefore an objective to guarantee the stability in manufacturing process, together
When be also the end properties stability for guaranteeing this configuration state.
1 performance test of experimental example
Say that the formula in embodiment 1-3 is fabricated to support rubber product by the preparation method of embodiment 4, what embodiment 1 made
Supporting rubber is first group, and the support rubber that embodiment 2 makes is second group, and the support rubber that embodiment 2 makes is third group；
Above-mentioned three groups of sizing material is tested by laboratory and workshop, and support rubber rheological data is as follows: with quantitative measurement data
It can be obtained by experimental analysis, the support rubber comprehensive performance of this programme preparation improves a lot, and especially supports to sidewall
Highly important tensile property, tear resistance and warping strength, cracking performance improve for rubber, and compression heat generation reduces, Ke Yigeng
The good performance requirement for meeting sidewall support rubber.
By the combination of structure and formula, the finished tire of first group of support rubber produced on-site is said.In zero air pressure shape
The speed that 80km/h is carried out under state under 65% loading condiction, carries out the durable machine tool capability experiment of zero air pressure.When test tire is accumulative
Between be 1.5 hours, can satisfy requirement of the national standard under zero atmospheric pressure state.
Above-mentioned specific embodiment is only specific case of the invention, and scope of patent protection of the invention includes but is not limited to
The product form and style of above-mentioned specific embodiment, any claims of the present invention and any technical field of meeting
The appropriate changes or modifications that those of ordinary skill does it, all shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of collateral support rubber of run-flat tire, it is characterised in that: be mainly made of the raw material of following parts by weight: isoamyl
30-50 parts of diene rubber, 40-60 parts of neodymium series butadiene rubber, 30-50 parts of carbon black N550,15-20 parts of white carbon black, liquid silane are even
Join agent 2-3 parts, -80 8-10 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of anti-aging agent RD, 1.5 parts of anti-aging agent 6PPD, paraffin 0.5
Part, 2.5 parts of insoluble sulfur, 2.5 parts of accelerator TBBS and 0.04 part of anti-scorching agent CTP.
2. a kind of preparation method of the collateral support rubber of run-flat tire as described in claim 1, it is characterised in that: including such as
Lower preparation step:
(1) isoprene rubber, neodymium series butadiene rubber, carbon black N550, the white carbon black, liquid of predetermined weight number milling maternal rubber: are taken
Body silane coupling agent, zinc oxide -80, stearic acid, anti-aging agent 6PPD, anti-aging agent RD, paraffin are kneaded after mixer is added, and are mixed
Refining initial temperature is 45 DEG C, and rotor speed 50r/min is sufficiently mixed sizing material, and dumping obtains rubber master batch A when temperature reaches 155 DEG C；
(2) park cooling: after rubber master batch A obtained by step (1) is carried out cooling by Fan Cooling System, it is small that room temperature parks at least 4
When obtain rubber master batch A1；
(3) rubber master batch back mixing: mixer is added in rubber master batch A1 cooling in step (2) and carries out back mixing, spinner velocity is set as 50r/
Min reaches 150 DEG C to sizing material temperature, and dumping obtains rubber master batch B；
(4) it parks cooling: carrying out rubber master batch B obtained in step (3) to be cooled to room temperature by Fan Cooling System, and in room temperature
It is lower to place at least 4 hours to obtain rubber master batch B1；
(5) refining is kneaded eventually: by the insoluble sulfur of rubber master batch B1 made from step (4) and predetermined weight number, accelerator TBBS, being prevented
Burnt agent CTP, which is added together in mixer, carries out refining mixing eventually, and rotor speed is set as 30r/min, when rubber compounding is lower than 100 DEG C
Dumping to get.
3. a kind of run-flat side brace type tire construction, it is characterised in that: the tire construction includes by wire loop (1) and three
The tyre bead (10) of angle glue (2) composition, liner layer (3), 1# carcass ply (4), 2# carcass ply (5), support rubber (6), 1# band
Beam layer (7), 2# belt (8), band (9), tyre surface (11) and sidewall (12).
4. a kind of run-flat side brace type tire construction as claimed in claim 3, it is characterised in that: each component part
It is sequentially distributed by tyre surface (11) to liner layer (3) along section perpendicular bisector (13), the base rubber of tyre surface (11) is with a thickness of 2.2mm-
2.5mm is band (9) below base rubber, is 2# belt (8) below band (9), below 2# belt (8)
It is 1# belt (7), and band (9) fetters 2# belt (8) and 1# belt (7), 1# belt (7) both ends are
Sidewall (12) amount of being encased inside is merged after the alar part glue of tyre surface (11) and sidewall (12) vulcanization, and 1# belt (7) is 2# tire below
Body cord (5) is 1# carcass ply (4) below 2# carcass ply (5), is liner layer (3) below 1# carcass ply (4).
5. a kind of run-flat side brace type tire construction as claimed in claim 3, it is characterised in that: the run-flat side
Distribution of the brace type tire construction in profile height position (14) is sequentially distributed from inside to outside are as follows: and innermost is liner layer (3),
Being bonded outward with liner layer (3) is support rubber (6), and what is be bonded outward with support rubber (6) is 1# casingply (4), with
1# casingply (4) fitting is that (5,1# casingplies (4) and 2# casingply (5) are around tire for 2# casingply
It encloses (10) and carries out anti-package, 2# casingply (5) is bonded with triangle rubber (2) after anti-package, after 1# casingply (4) anti-package
It is bonded with sidewall (12), outermost is sidewall (12).
6. a kind of run-flat side brace type tire construction as claimed in claim 5, it is characterised in that: the support rubber
(6) it is fitted closely with liner layer (3) and 1# casingply (4), supports the side of the upper end distance 1# belt (7) of rubber (6)
Portion 20mm-25mm supports the lower end of rubber (6) apart from wire loop (1) 7mm-10mm.
7. a kind of run-flat side brace type tire construction as claimed in claim 6, it is characterised in that: the support rubber
(6) crescent shape shape is presented, thickness is gradually increased by both ends to centre, and symmetrical mode is presented in shape, and most thick position is thick
Degree is 8mm-10mm, and hardness is -80 shore of 72 shore.
8. a kind of production method of run-flat side brace type tire construction as claimed in claim 7, it is characterised in that: use
Molding mode be secondary method mode, production order are as follows:
(1) one section: tyre bead-assembly drum contraction-liner layer-assembly drum rising-support rubber -1# carcass ply -2# carcass ply -
Buckle ring anti-package-rolling-sidewall-rolling；
(2) two sections: 1# belt -2# belt-band-tyre surface-carries out component rolling with one section of tire cylinder.
9. a kind of production method of run-flat side brace type tire construction as claimed in claim 8, it is characterised in that: described
The intermediate waistband of assembly drum is changed to rubber belt track product by aluminum product, and the aluminium flake on both sides tilts down.
10. a kind of production method of run-flat side brace type tire construction as claimed in claim 8, it is characterised in that: institute
Liner layer (3) is stated with a thickness of 1.5mm-2.0mm, assembly drum carries out fitting liner in the state of contracting drum, after the completion of fitting into
The capable drum that rises；After being bonded liner layer (3), support rubber (6) is bonded according to beacon light line, complete cycle, which gets off, needs slope to overlap；Then
It is bonded 1# carcass ply (4), needs to be rolled with idler wheel after the completion, increase the degree of adhesion between component；The support rubber of selection
8 Mpa-the 10Mpa of elasticity modulus of glue (6).
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| CN111422010A (en) * | 2020-03-26 | 2020-07-17 | 万达集团股份有限公司 | Anti-out-of-control tire under pressure loss condition |
| CN111674069A (en) * | 2020-05-26 | 2020-09-18 | 万达集团股份有限公司 | Method for forming in short of air |
| CN111796084A (en) * | 2020-06-23 | 2020-10-20 | 中策橡胶集团有限公司 | Screening method of run-flat tire support rubber, support rubber obtained by screening method and tire containing support rubber |
| CN112250920A (en) * | 2020-10-30 | 2021-01-22 | 中国科学院长春应用化学研究所 | Sidewall supporting rubber taking synthetic rubber as base rubber and preparation method and application thereof |
| CN112980062A (en) * | 2021-01-28 | 2021-06-18 | 北京玲珑轮胎有限公司 | Run-flat tire and rubber composition of support rubber thereof |
| CN114290858A (en) * | 2022-03-04 | 2022-04-08 | 山东万达宝通轮胎有限公司 | Run-flat tire |
| CN114845890A (en) * | 2020-02-03 | 2022-08-02 | 住友橡胶工业株式会社 | Runflat tire |
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Application publication date: 20190308 |