CN107082918A - A kind of tyre rebuilding prevulcanized tire tread rubber and its preparation technology - Google Patents
A kind of tyre rebuilding prevulcanized tire tread rubber and its preparation technology Download PDFInfo
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- CN107082918A CN107082918A CN201710208458.XA CN201710208458A CN107082918A CN 107082918 A CN107082918 A CN 107082918A CN 201710208458 A CN201710208458 A CN 201710208458A CN 107082918 A CN107082918 A CN 107082918A
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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
- C08L9/06—Copolymers with styrene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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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
- C08L2312/00—Crosslinking
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of tyre rebuilding prevulcanized tire tread rubber, and the tyre rebuilding includes solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin, Fanglun slurry cake chopped fiber, carbon black, white carbon, magnesia, stearic acid, coupling agent, dispersant, vulcanizing agent, plasticizer, accelerator and antiaging agent with prevulcanized tire tread rubber；A kind of tyre rebuilding prevulcanized tire tread rubber that the present invention is provided has good wear-resisting wet-sliding resistant performance, and the tread rubber hardness is low, and elasticity is good, possesses good ageing resistace；Present invention also offers a kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber, technique is simple, and product qualification rate is high, and raw material environmental protection is cheap.
Description
Technical field
The present invention relates to tyre retreading technique, and in particular to a kind of tyre rebuilding prevulcanized tire tread rubber and its preparation work
Skill.
Background technology
With automobile industry development, the consumption of tire is more and more big, and low charcoal economic setting is vigorously advocated in current country
Under, junked tire is advocated to recycle as renewable resource turns into the common recognition of society.
Retreads are the active approaches that junked tire is recycled, and are that the extension and processing of tire industry are recycled, right
In promoting resources conservation comprehensive utilization, the mode of boosting economic growth changes and sustainable development, rich in positive effect.
Existing prevulcanized tire tread rubber wearability and wet-sliding resistant performance are not ideal enough, raw materials used to also tend to not be environment-friendly type
Raw material, can affect to environment, not meet the requirement of existing low-carbon environment-friendly.
In addition, the production cost of existing prevulcanized tire tread rubber is higher, technique is complex, product qualification rate it is also universal compared with
It is low, it is also difficult to meet the requirement of energy-conserving and environment-protective.
Based on above technical problem, this invention address that a kind of environmentally friendly and practical performance of research is preferably, production cost is relatively low
Tread rubber.
The content of the invention
To solve above-mentioned problem, it is an object of the invention to provide a kind of tyre rebuilding prevulcanized tire tread rubber
With good wear-resisting wet-sliding resistant performance, the tread rubber hardness is low, and elasticity is good, possesses good ageing resistace；The present invention
A kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber is also provided, technique is simple, and product qualification rate is high, raw material environmental protection, valency
Lattice are cheap.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of tyre rebuilding prevulcanized tire tread rubber, it is former that the tyre rebuilding includes following weight proportion with prevulcanized tire tread rubber
Material：
Solution polymerized butadiene styrene rubber：40-50 parts, epoxy natural rubber：20-30 parts, binder resin：10-15 parts, the short fibre of Fanglun slurry cake
Dimension：10-15 parts, carbon black：5-10 parts, white carbon：5-10 parts, magnesia：2-5 parts, stearic acid：2-5 parts, coupling agent：0.1-1
Part, dispersant：0.1-1 parts, vulcanizing agent：0.1-1 parts, plasticizer：0.1-0.5 parts, accelerator：0.1-0.5 parts, antiaging agent：
0.1-0.5 parts.
A kind of tyre rebuilding prevulcanized tire tread rubber that the present invention is provided, raw materials used is all environmentally friendly raw material,
By being combined from solution polymerized butadiene styrene rubber, epoxy natural rubber and binder resin, solution polymerized butadiene styrene rubber had into bullet
Property excellent performance and cold resistance and epoxy natural rubber and binder resin have good anti-wear performance and machining function soft
Together, extraordinary effect is achieved, its anti-slippery ability and low-rolling-resistance is further enhancing；The present invention is by adding
The rigidity of the flexibility of rubber and chopped fiber can be combined together by Fanglun slurry cake chopped fiber well, so as to further improve
The premium properties such as the anti-puncture and tearing strength of tread rubber.
Further, the binder resin is that EVA is modified binder resin, with good bonding force, while the bonding tree
Fat can also reduce overall processing temperature, reduce energy consumption.
Further, the coupling agent is 3- mercaptopropyls trimethoxy silane, 3- thiocyano propyl triethoxy silicanes
With it is double-（Triethoxysilane propyl group）One or more in polysulfide, the coupling agent is that one kind is especially suitable for the vulcanization of rubber
The silane coupler of system, can effectively improve the ageing-resistant performance and reversion of system, by using the coupling agent energy
Further significantly improve the anti-slippery ability of tread rubber and lower rolling resistance.
Further, the dispersant is in ethylene group bis-stearamides, glyceryl monostearate and glyceryl tristearate
One or more, the dispersant has good dispersive property, whole reaction system is kept prolonged stable, does not coagulate
It is poly-, while the process time of tread rubber can also be reduced, more save.
Further, vulcanizing agent is the mixture of sulphur and aliphatic polysulfide, and the vulcanizing agent can make intramolecular
Decline with reference to sulphur, be conducive to the low temperature performance of tread rubber, while the thermo oxidative aging and sulfuration resistant of tread rubber can also be improved
Return reducing property.
In addition, the plasticizer is environment-friendly aromatic oil, the plasticizer is environment friendly and pollution-free, can further improve pulling for tread rubber
Disconnected elongation and wet-sliding resistant performance.
Separately have, the accelerator is N- oxygen diethylidene thiocarbamoyls-N '-oxygen diethylidene sulfenamide, is passed through
Adding the accelerator makes the tread rubber have good scorching quality.
Again, the antiaging agent is p-phenylenediamine class antiaging agent, by adding the antiaging agent, further improves institute
The anti ageing property of tread rubber is stated, the service life of the tread rubber is improved.
Further, a kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber, including following steps：
A：One section of mixing：Banbury rotating speed is set to 50-60 and turns/min, by each weight proportion of prevulcanized tire tread rubber raw material
Solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin and Fanglun slurry cake chopped fiber are added in banbury, floating weight is pressed
Mixing 20-30 seconds, then sequentially adds coupling agent and white carbon, presses floating weight, kneads to 140-150 DEG C, rises floating weight and cleans
3-5 seconds, pressure floating weight was kneaded to 150-155 DEG C, is risen floating weight and is cleaned 3-5 seconds, and pressure floating weight maintains the temperature at 145-155 DEG C
Between, knead 90-120 seconds, dumping, cooling obtains one section of masterbatch；
B：Low-temperature primary method is kneaded：By banbury rotating speed be set to 40-50 turn/min, by step A gained one section of masterbatch,
Magnesia, stearic acid, dispersant and antiaging agent are added in banbury, and pressure floating weight is kneaded 30-40 seconds, and carbon black is added,
Press floating weight to knead 30-50 seconds, rise floating weight and clean 3-5 seconds, pressure floating weight is kneaded 20-30 seconds, is risen on floating weight in place, in pressure
Push up bolt to knead 25-30 seconds, bin gate dumping of starting discharging controls 145-155 DEG C of dump temperature；The sizing material of banbury discharge enters low temperature
In once-through method mill, the sizing material that banbury is discharged in mill carries out cooling mixing 120-180 seconds, and sizing material temperature is reduced to
Vulcanizing agent, plasticizer and accelerator are added at 80-90 DEG C on a mill, after medicine is scattered, by mill roll spacing adjust to
1.8-2.4mm, carries out the mixing of falling glue 500-600 seconds, and mixing terminates mill dumping, bottom sheet, that is, obtains prevulcanized tire tread rubber.
A kind of preparation technology for tyre rebuilding prevulcanized tire tread rubber that the present invention is provided, technique is simple, product qualification rate
Height, raw material environmental protection is cheap, is suitable for large-scale promotion and application.
The beneficial effects of the present invention are：
（1）A kind of tyre rebuilding prevulcanized tire tread rubber that the present invention is provided has good wear-resisting wet-sliding resistant performance, the tire
Face glue hardness is low, and elasticity is good, possesses good ageing resistace.
（2）A kind of tyre rebuilding prevulcanized tire tread rubber that the present invention is provided, with good wet-sliding resistant performance and low rolling
Dynamic resistance.
（3）A kind of preparation technology for tyre rebuilding prevulcanized tire tread rubber that the present invention is provided, technique is simple, energy consumption compared with
Low, product qualification rate is high, raw material environmental protection, and cheap, suit large area to popularize application.
Embodiment
Clear, complete description will be carried out to the technical scheme in the embodiment of the present invention below, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained on the premise of creative work is not made, belongs to what the present invention was protected
Scope.
Embodiment 1
A kind of tyre rebuilding prevulcanized tire tread rubber, it is former that the tyre rebuilding includes following weight proportion with prevulcanized tire tread rubber
Material：
Solution polymerized butadiene styrene rubber：45 parts, epoxy natural rubber：20 parts, binder resin：12 parts, Fanglun slurry cake chopped fiber：15 parts,
Carbon black：7.5 parts, white carbon：7.8 parts, magnesia：4.8 parts, stearic acid：3.5 parts, coupling agent：0.58 part, dispersant：0.2 part,
Vulcanizing agent：0.6 part, plasticizer：0.5 part, accelerator：0.25 part, antiaging agent：0.12 part.
A kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber, including following steps：
A：One section of mixing：Banbury rotating speed is set to 55 turns/min, will by each weight proportion of the prevulcanized tire tread rubber raw material
Solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin and Fanglun slurry cake chopped fiber are added in banbury, and pressure floating weight is mixed
Refining 20 seconds, then sequentially adds coupling agent and white carbon, presses floating weight, kneads to 145 DEG C, rises floating weight and cleans 5 seconds, is pushed up in pressure
Bolt is kneaded to 150 DEG C, is risen floating weight and is cleaned 4 seconds, and pressure floating weight is maintained the temperature between 155 DEG C, is kneaded 110 seconds, dumping, cooling,
Obtain one section of masterbatch；
B：Low-temperature primary method is kneaded：Banbury rotating speed is set to 40 turns/min, by one section of masterbatch, oxygen of gained in step A
Change magnesium, stearic acid, dispersant and antiaging agent to be added in banbury, pressure floating weight is kneaded 35 seconds, carbon black is added, in pressure
Push up bolt to knead 40 seconds, rise floating weight and clean 3 seconds, pressure floating weight is kneaded 25 seconds, rise on floating weight in place, pressure floating weight mixing 27
Second, bin gate dumping of starting discharging controls 150 DEG C of dump temperature；The sizing material of banbury discharge is entered in low-temperature primary method mill, close
The sizing material that mill is discharged in mill carries out cooling mixing 150 seconds, and sizing material temperature adds sulphur on a mill when being reduced to 90 DEG C
Agent, plasticizer and accelerator, after medicine are scattered, mill roll spacing are adjusted to 2 mm, the mixing of falling glue 550 seconds is carried out, mixed
Refining terminates mill dumping, bottom sheet, that is, obtains prevulcanized tire tread rubber.
Embodiment 2
A kind of tyre rebuilding prevulcanized tire tread rubber, it is former that the tyre rebuilding includes following weight proportion with prevulcanized tire tread rubber
Material：
Solution polymerized butadiene styrene rubber：50 parts, epoxy natural rubber：26 parts, binder resin：15 parts, Fanglun slurry cake chopped fiber：10 parts,
Carbon black：5.2 parts, white carbon：9.6 parts, magnesia：3.5 parts, stearic acid：2 parts, coupling agent：0.98 part, dispersant：0.54 part,
Vulcanizing agent：0.15 part, plasticizer：0.3 part, accelerator：0.12 part, antiaging agent：0.48 part.
A kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber, including following steps：
A：One section of mixing：Banbury rotating speed is set to 50 turns/min, will by each weight proportion of the prevulcanized tire tread rubber raw material
Solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin and Fanglun slurry cake chopped fiber are added in banbury, and pressure floating weight is mixed
Refining 25 seconds, then sequentially adds coupling agent and white carbon, presses floating weight, kneads to 150 DEG C, rises floating weight and cleans 4 seconds, is pushed up in pressure
Bolt is kneaded to 152 DEG C, is risen floating weight and is cleaned 3 seconds, and pressure floating weight is maintained the temperature between 145 DEG C, is kneaded 90 seconds, dumping, and cooling is obtained
To one section of masterbatch；
B：Low-temperature primary method is kneaded：Banbury rotating speed is set to 50 turns/min, by one section of masterbatch, oxygen of gained in step A
Change magnesium, stearic acid, dispersant and antiaging agent to be added in banbury, pressure floating weight is kneaded 30 seconds, and carbon black is added, and is pushed up in pressure
Bolt is kneaded 50 seconds, is risen floating weight and is cleaned 4 seconds, and pressure floating weight is kneaded 30 seconds, is risen on floating weight in place, and pressure floating weight is kneaded 25 seconds,
Start discharging bin gate dumping, control 145 DEG C of dump temperature；The sizing material of banbury discharge is entered in low-temperature primary method mill, banburying
The sizing material that machine is discharged in mill carries out cooling mixing 120 seconds, adds vulcanization when sizing material temperature is reduced to 85 DEG C on a mill
Agent, plasticizer and accelerator, after medicine are scattered, mill roll spacing are adjusted to 2.4mm, the mixing of falling glue 500 seconds is carried out, mixed
Refining terminates mill dumping, bottom sheet, that is, obtains prevulcanized tire tread rubber.
Embodiment 3
A kind of tyre rebuilding prevulcanized tire tread rubber, it is former that the tyre rebuilding includes following weight proportion with prevulcanized tire tread rubber
Material：
Solution polymerized butadiene styrene rubber：40 parts, epoxy natural rubber：30 parts, binder resin：10.5 parts, Fanglun slurry cake chopped fiber：13.2
Part, carbon black：9.6 parts, white carbon：5 parts, magnesia：2.2 parts, stearic acid：5 parts, coupling agent：0.15 part, dispersant：0.97 part,
Vulcanizing agent：0.9 part, plasticizer：0.13 part, accelerator：0.5 part, antiaging agent：0.34 part.
A kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber, including following steps：
A：One section of mixing：Banbury rotating speed is set to 60 turns/min, will by each weight proportion of the prevulcanized tire tread rubber raw material
Solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin and Fanglun slurry cake chopped fiber are added in banbury, and pressure floating weight is mixed
Refining 30 seconds, then sequentially adds coupling agent and white carbon, presses floating weight, kneads to 140 DEG C, rises floating weight and cleans 3 seconds, is pushed up in pressure
Bolt is kneaded to 155 DEG C, is risen floating weight and is cleaned 5 seconds, and pressure floating weight is maintained the temperature between 150 DEG C, is kneaded 120 seconds, dumping, cooling,
Obtain one section of masterbatch；
B：Low-temperature primary method is kneaded：Banbury rotating speed is set to 45 turns/min, by one section of masterbatch, oxygen of gained in step A
Change magnesium, stearic acid, dispersant and antiaging agent to be added in banbury, pressure floating weight is kneaded 40 seconds, carbon black is added, in pressure
Push up bolt to knead 30 seconds, rise floating weight and clean 4 seconds, pressure floating weight is kneaded 20 seconds, rise on floating weight in place, pressure floating weight mixing 30
Second, bin gate dumping of starting discharging controls 155 DEG C of dump temperature；The sizing material of banbury discharge is entered in low-temperature primary method mill, close
The sizing material that mill is discharged in mill carries out cooling mixing 180 seconds, and sizing material temperature adds sulphur on a mill when being reduced to 80 DEG C
Agent, plasticizer and accelerator, after medicine are scattered, mill roll spacing are adjusted to 1.8 mm, the mixing of falling glue 600 seconds is carried out,
Mixing terminates mill dumping, bottom sheet, that is, obtains prevulcanized tire tread rubber.
A kind of tyre rebuilding prevulcanized tire tread rubber that the present invention is provided has good wear-resisting wet-sliding resistant performance, the tire
Face glue hardness is low, and elasticity is good, possesses good ageing resistace.Furthermore, a kind of tyre rebuilding presulfurization that the present invention is provided
Tread rubber, with good wet-sliding resistant performance and low-rolling-resistance.In addition, a kind of tyre rebuilding presulfurization that the present invention is provided
The preparation technology of tread rubber, technique is simple, and energy consumption is relatively low, and product qualification rate is high, raw material environmental protection, cheap, is adapted to large area
Popularization and application.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention
Scheme is modified or equivalent substitution, and without departing from the scope of technical solution of the present invention, it all should cover the power in the present invention
In sharp claimed range.
Claims (9)
1. a kind of tyre rebuilding prevulcanized tire tread rubber, it is characterised in that tyre rebuilding prevulcanized tire tread rubber include with
Lower weight proportion raw material：
Solution polymerized butadiene styrene rubber：40-50 parts, epoxy natural rubber：20-30 parts, binder resin：10-15 parts, the short fibre of Fanglun slurry cake
Dimension：10-15 parts, carbon black：5-10 parts, white carbon：5-10 parts, magnesia：2-5 parts, stearic acid：2-5 parts, coupling agent：0.1-1
Part, dispersant：0.1-1 parts, vulcanizing agent：0.1-1 parts, plasticizer：0.1-0.5 parts, accelerator：0.1-0.5 parts, antiaging agent：
0.1-0.5 parts.
2. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the binder resin is
EVA is modified binder resin.
3. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the coupling agent is 3-
Mercaptopropyl trimethoxy silane, 3- thiocyano propyl triethoxy silicanes and double-（Triethoxysilane propyl group）Many vulcanizations
It is one or more in thing.
4. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the dispersant is second
One or more in support group bis-stearamides, glyceryl monostearate and glyceryl tristearate.
5. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that vulcanizing agent be sulphur and
The mixture of aliphatic polysulfide.
6. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the plasticizer is ring
Protect aromatic naphtha.
7. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the accelerator is N-
Oxygen diethylidene thiocarbamoyl-N '-oxygen diethylidene sulfenamide.
8. a kind of tyre rebuilding prevulcanized tire tread rubber according to claim 1, it is characterised in that the antiaging agent is
P-phenylenediamine class antiaging agent.
9. a kind of a kind of preparation technology of tyre rebuilding prevulcanized tire tread rubber as claimed in claim 1, it is characterised in that bag
Include following steps：
A：One section of mixing：Banbury rotating speed is set to 50-60 and turns/min, by each weight proportion of prevulcanized tire tread rubber raw material
Solution polymerized butadiene styrene rubber, epoxy natural rubber, binder resin and Fanglun slurry cake chopped fiber are added in banbury, floating weight is pressed
Mixing 20-30 seconds, then sequentially adds coupling agent and white carbon, presses floating weight, kneads to 140-150 DEG C, rises floating weight and cleans
3-5 seconds, pressure floating weight was kneaded to 150-155 DEG C, is risen floating weight and is cleaned 3-5 seconds, and pressure floating weight maintains the temperature at 145-155 DEG C
Between, knead 90-120 seconds, dumping, cooling obtains one section of masterbatch；
B：Low-temperature primary method is kneaded：By banbury rotating speed be set to 40-50 turn/min, by step A gained one section of masterbatch,
Magnesia, stearic acid, dispersant and antiaging agent are added in banbury, and pressure floating weight is kneaded 30-40 seconds, and carbon black is added,
Press floating weight to knead 30-50 seconds, rise floating weight and clean 3-5 seconds, pressure floating weight is kneaded 20-30 seconds, is risen on floating weight in place, in pressure
Push up bolt to knead 25-30 seconds, bin gate dumping of starting discharging controls 145-155 DEG C of dump temperature；The sizing material of banbury discharge enters low temperature
In once-through method mill, the sizing material that banbury is discharged in mill carries out cooling mixing 120-180 seconds, and sizing material temperature is reduced to
Vulcanizing agent, plasticizer and accelerator are added at 80-90 DEG C on a mill, after medicine is scattered, by mill roll spacing adjust to
1.8-2.4mm, carries out the mixing of falling glue 500-600 seconds, and mixing terminates mill dumping, bottom sheet, that is, obtains prevulcanized tire tread rubber.
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| CN109679172A (en) * | 2018-12-29 | 2019-04-26 | 浙江宽途智能科技有限公司 | A kind of pricking-proof explosion-proof tire material and preparation method thereof |
| CN115536850A (en) * | 2021-06-14 | 2022-12-30 | 南京科技职业学院 | Aramid pulp modification method, reinforced rubber composite material and preparation method |
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Application publication date: 20170822 |