CN101381482B - All-steel radial ply tyre tread base and preparation method thereof - Google Patents

All-steel radial ply tyre tread base and preparation method thereof Download PDF

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Publication number
CN101381482B
CN101381482B CN2008101557661A CN200810155766A CN101381482B CN 101381482 B CN101381482 B CN 101381482B CN 2008101557661 A CN2008101557661 A CN 2008101557661A CN 200810155766 A CN200810155766 A CN 200810155766A CN 101381482 B CN101381482 B CN 101381482B
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mixing
weight
rotor
banbury mixer
weight parts
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CN2008101557661A
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CN101381482A (en
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顾瑞
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江苏通用科技股份有限公司
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Abstract

The invention discloses tread base for an all-steel radial tire and a preparation method thereof. The tread base for the all-steel radial tire comprises the following compositions in weight portion: 100 weight portions of natural gum SMR20, 0.1 to 0.5 weight portion of chemical peptizer, 30 to 45 weight portions of carbon black, 7 to 15 weight portions of white carbon black, 3 to 5 weight portions of zinc oxide, 1.5 to 3 weight portions of silane coupling agent Si-69, 1.5 to 3 weight portions of stearic acid, 1 to 2 weight portions of antiaging agent 4020, 0.5 to 2 weight portions of micro-crystalline wax, 0.5 to 2 weight portions of antiaging agent RD, 1 to 2 weight portions of fatigue protective agent G-108, 2 to 3 weight portions of oil-filled insoluble sulfur, 0.5 to 1 weight portion of accelerant NS, 0.5 to 1 weight portion of accelerant CZ and 0.1 to 0.5 weight portion of antiscorcher CTP. The tread base for the all-steel radial tire is prepared by one-stage mixing, standing for the first time, two-stage mixing, standing for the second time and final mixing.

Description

All-steel radial ply tyre tread base and preparation method thereof
Technical field
The invention discloses a kind of all-steel radial ply tyre tread base, the invention also discloses a kind of preparation method of all-steel radial ply tyre tread base.
Background technology
At present, a lot of tires tread base in big load is run at high speed process carries out high-intensity deflecting, and it is hot higher to cause the tread base position to be given birth to, thereby the hat that causes tire takes off, takes on quality problems such as sky, have a strong impact on the work-ing life of tire, even cause great traffic accident.
Summary of the invention
One of purpose of the present invention is to overcome the deficiencies in the prior art, a kind of living thermal phenomenon that can reduce tire tread base in the process of running at high speed is provided, avoids the hat of tire to take off, take on quality problems such as sky and improve the tire all-steel radial ply tyre tread base in work-ing life.
Two of purpose of the present invention provides a kind of preparation method of above-mentioned all-steel radial ply tyre tread base.
According to technical scheme provided by the invention, described all-steel radial ply tyre tread base comprises the each component of following weight part: natural gum SMR20 is 100 weight parts, the chemistry peptizer is 0.1~0.5 weight part, carbon black is 30~45 weight parts, white carbon black is 7~15 weight parts, zinc oxide is 3~5 weight parts, silane coupling agent Si-69 is 1.5~3 weight parts, stearic acid is 1.5~3 weight parts, anti-aging agent 4020 is 1~2 weight part, Microcrystalline Wax is 0.5~2 weight part, and anti-aging agent RD is 0.5~2 weight part, and fatigue protective agent G-108 is 1~2 weight part, oil-filled insoluble sulfur is 2~3 weight parts, accelerator NS is 0.5~1 weight part, and accelerant CZ is 0.5~1 weight part, and anti-scorching agent CTP is 0.1~0.5 weight part.
The preparation method of above-mentioned all-steel radial ply tyre tread base comprises following steps:
One section mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40~50rmp, mixing pressure is 17~19MPa, mixing chambers temp is 35~45 ℃, temperature of rotor is 30~40 ℃, dump temperature is 135~160 ℃, weighing natural rubber and peptizer then, utilize the rotor rotation to carry out natural rubber plasticated 20~40 seconds in mixing chamber, then in mixing chamber, add white carbon black, silane coupling agent Si-69, zinc oxide, stearic acid, anti-aging agent 4020, anti-aging agent RD, Microcrystalline Wax and G-108, and utilize rotor and natural rubber to carry out mixing 20~40 seconds in mixing chamber, adding carbon black then in the mixing chamber carried out mixing 50~70 seconds, binder removal is carried out in mixing end, and this glue is one section rubber master batch;
Leave standstill for the first time: the rubber master batch with a section after mixing places air to be cooled to normal temperature;
Two-stage mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40~50rmp, pressure is 17~19MPa, mixing chambers temp is 35~45 ℃, temperature of rotor is 30~40 ℃, and dump temperature is 135~160 ℃, and the rubber master batch after leaving standstill is for the first time dropped into Banbury mixer, refining glue carried out binder removal in 90~110 seconds, and this glue is two sections rubber master batch;
Leave standstill for the second time: place air to be cooled to normal temperature the rubber master batch behind the two-stage mixing;
Refining eventually: start Banbury mixer, the rotor speed that Banbury mixer is set is 20~25rmp, mixing pressure is 16~18MPa, mixing chambers temp is 25~40 ℃, temperature of rotor is 25~35 ℃, dump temperature is 90~105 ℃, and two sections rubber master batch and oil-filled insoluble sulfur, accelerator NS, accelerant CZ are dropped into mixing chamber with anti-scorching agent CTP, and to utilize the rotor rotation to carry out mixing, carries out binder removal after mixing 140~170 seconds and obtain finished product.
What the present invention used in the tread slab base prescription is pure natural glue prescription, because natural gum is that over-all properties is best in all rubber, thereby can improve the overall performance of tread cushion rubber.
The N326 carbon black that prescription MR medium reinforcing system is used belongs to the high abrasion subnormal structure black, can improve the flexible resistance of tread slab base, and tread slab base itself contacts with belt, requires to have the good fatigue performance that deflects.
Adopt oil-filled insoluble sulfur in the vulcanization system, greatly reduced bloom appears in rubber unvulcanizate when extruding with moulding probability.
Fatigue protective agent G-108 in the prescription is the complex compound of mphenylenediamine and phenolic resin reaction.Can improve the sizing material tear resistance, be particularly useful in the meridian lorry tyre tread, can effectively reduce the heat of giving birth to of tread slab base, thereby improve the anti-puncture performance of wear resisting property of tyre surface.
Protection system adopts anti-aging agent RD+4020+ Microcrystalline Wax, 4020 good antioxygen, anti-ozone arranged, anti-ly deflect effect, RD is splendid to the thermo-oxidative ageing effect, Microcrystalline Wax can form one deck cere on the sizing material surface, and this cere solubleness is lower, and travelling speed is slow, it is long to reach the equilibrium thickness required time, its surface forms highdensity cere near amorphous state, can stop the ozone infiltration effectively, reaches the favorable protection effect.
Zinc oxide and stearic acid have been formed activation system in the sulfur cross-linking system, activated whole vulcanization system, improve the cross-linking density of cross-linked rubber, have improved the heat aging property of cross-linked rubber.
Anti-scorching agent CTP is used for improving the stability of rubber unvulcanizate at processing and storage process, prevents incipient scorch.
Peptizer adopts SJ-103, adds when plasticating, and natural rubber is worked the effect of separating of moulding.
The present invention in use can reduce the living thermal phenomenon of tire tread base in the process of running at high speed, and avoids the hat of tire to take off, and shoulder quality problems such as sky also improve tire work-ing life, and the preparation method is simple.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1
A kind of all-steel radial ply tyre tread base, this all-steel radial ply tyre tread base comprises the each component of following weight part: natural gum SMR20 is 100 weight parts, the chemistry peptizer is 0.3 weight part, carbon black is 39 weight parts, white carbon black is 10 weight parts, zinc oxide is 4.5 weight parts, and silane coupling agent Si-69 is 2 weight parts, and stearic acid is 2 weight parts, anti-aging agent 4020 is 1.5 weight parts, Microcrystalline Wax is 1 weight part, and anti-aging agent RD is 1 weight part, and fatigue protective agent G-108 is 1.5 weight parts, oil-filled insoluble sulfur is 2.4 weight parts, accelerator NS is 0.8 weight part, and accelerant CZ is 0.7 weight part, and anti-scorching agent CTP is 0.3 weight part.
The preparation method of above-mentioned all-steel radial ply tyre tread base comprises following steps:
One section mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 45rmp, mixing pressure is 18MPa, mixing chambers temp is 40 ℃, temperature of rotor is 35 ℃, dump temperature is 145 ℃, weighing natural rubber and peptizer then, utilize the rotor rotation to carry out natural rubber plasticated 30 seconds in mixing chamber, then in mixing chamber, add white carbon black, silane coupling agent Si-69, zinc oxide, stearic acid, anti-aging agent 4020, anti-aging agent RD, Microcrystalline Wax and G-108, and utilize rotor and natural rubber to carry out mixing 30 seconds in mixing chamber add carbon black in the mixing chamber then and carried out mixing 60 seconds, binder removal is carried out in mixing end, and this glue is one section rubber master batch;
Leave standstill for the first time: the rubber master batch with a section after mixing places air to be cooled to normal temperature;
Two-stage mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 45rmp, and pressure is 18MPa, mixing chambers temp is 40 ℃, and temperature of rotor is 35 ℃, and dump temperature is 145 ℃, rubber master batch after leaving standstill is for the first time dropped into Banbury mixer, and refining glue carried out binder removal in 100 seconds, and this glue is two sections rubber master batch;
Leave standstill for the second time: place air to be cooled to normal temperature the rubber master batch behind the two-stage mixing;
Refining eventually: start Banbury mixer, the rotor speed that Banbury mixer is set is 22rmp, mixing pressure is 17MPa, mixing chambers temp is 33 ℃, temperature of rotor is 28 ℃, dump temperature is 99 ℃, and two sections rubber master batch and oil-filled insoluble sulfur, accelerator NS, accelerant CZ are dropped into mixing chamber with anti-scorching agent CTP, and to utilize the rotor rotation to carry out mixing, carries out binder removal after mixing 150 seconds and obtain finished product.This finished product its physicals after testing sees Table 1.
Embodiment 2
A kind of all-steel radial ply tyre tread base, this all-steel radial ply tyre tread base comprises the each component of following weight part: natural gum SMR20 is 100 weight parts, the chemistry peptizer is 0.1 weight part, carbon black is 30 weight parts, white carbon black is 7 weight parts, zinc oxide is 3 weight parts, and silane coupling agent Si-69 is 1.5 weight parts, and stearic acid is 1.5 weight parts, anti-aging agent 4020 is 1 weight part, Microcrystalline Wax is 0.5 weight part, and anti-aging agent RD is 0.5 weight part, and fatigue protective agent G-108 is 1 weight part, oil-filled insoluble sulfur is 2 weight parts, accelerator NS is 0.5 weight part, and accelerant CZ is 0.5 weight part, and anti-scorching agent CTP is 0.1 weight part.
The preparation method of above-mentioned all-steel radial ply tyre tread base comprises following steps:
One section mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40rmp, mixing pressure is 17MPa, mixing chambers temp is 35 ℃, temperature of rotor is 30 ℃, dump temperature is 135 ℃, weighing natural rubber and peptizer then, utilize the rotor rotation to carry out natural rubber plasticated 20 seconds in mixing chamber, then in mixing chamber, add white carbon black, silane coupling agent Si-69, zinc oxide, stearic acid, anti-aging agent 4020, anti-aging agent RD, Microcrystalline Wax and G-108, and utilize rotor and natural rubber to carry out mixing 20 seconds in mixing chamber add carbon black in the mixing chamber then and carried out mixing 50 seconds, binder removal is carried out in mixing end, and this glue is one section rubber master batch;
Leave standstill for the first time: the rubber master batch with a section after mixing places air to be cooled to normal temperature;
Two-stage mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40rmp, and pressure is 17MPa, mixing chambers temp is 35 ℃, and temperature of rotor is 30 ℃, and dump temperature is 135 ℃, rubber master batch after leaving standstill is for the first time dropped into Banbury mixer, and refining glue carried out binder removal in 90 seconds, and this glue is two sections rubber master batch;
Leave standstill for the second time: place air to be cooled to normal temperature the rubber master batch behind the two-stage mixing;
Refining eventually: start Banbury mixer, the rotor speed that Banbury mixer is set is 20rmp, mixing pressure is 16MPa, mixing chambers temp is 25 ℃, temperature of rotor is 25 ℃, dump temperature is 90 ℃, and two sections rubber master batch and oil-filled insoluble sulfur, accelerator NS, accelerant CZ are dropped into mixing chamber with anti-scorching agent CTP, and to utilize the rotor rotation to carry out mixing, carries out binder removal after mixing 140 seconds and obtain finished product.This finished product its physicals after testing sees Table 1.
Embodiment 3
Described all-steel radial ply tyre tread base comprises the each component of following weight part: natural gum SMR20 is 100 weight parts, the chemistry peptizer is 0.5 weight part, carbon black is 45 weight parts, white carbon black is 15 weight parts, zinc oxide is 5 weight parts, silane coupling agent Si-69 is 3 weight parts, stearic acid is 3 weight parts, and anti-aging agent 4020 is 2 weight parts, and Microcrystalline Wax is 2 weight parts, anti-aging agent RD is 2 weight parts, fatigue protective agent G-108 is 2 weight parts, and oil-filled insoluble sulfur is 3 weight parts, and accelerator NS is 1 weight part, accelerant CZ is 1 weight part, and anti-scorching agent CTP is 0.5 weight part.
The preparation method of above-mentioned all-steel radial ply tyre tread base comprises following steps:
One section mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 50rmp, mixing pressure is 19MPa, mixing chambers temp is 45 ℃, temperature of rotor is 40 ℃, dump temperature is 160 ℃, weighing natural rubber and peptizer then, utilize the rotor rotation to carry out natural rubber plasticated 40 seconds in mixing chamber, then in mixing chamber, add white carbon black, silane coupling agent Si-69, zinc oxide, stearic acid, anti-aging agent 4020, anti-aging agent RD, Microcrystalline Wax and G-108, and utilize rotor and natural rubber to carry out mixing 40 seconds in mixing chamber add carbon black in the mixing chamber then and carried out mixing 70 seconds, binder removal is carried out in mixing end, and this glue is one section rubber master batch;
Leave standstill for the first time: the rubber master batch with a section after mixing places air to be cooled to normal temperature;
Two-stage mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 50rmp, and pressure is 19MPa, mixing chambers temp is 45 ℃, and temperature of rotor is 40 ℃, and dump temperature is 160 ℃, rubber master batch after leaving standstill is for the first time dropped into Banbury mixer, and refining glue carried out binder removal in 110 seconds, and this glue is two sections rubber master batch;
Leave standstill for the second time: place air to be cooled to normal temperature the rubber master batch behind the two-stage mixing;
Refining eventually: start Banbury mixer, the rotor speed that Banbury mixer is set is 25rmp, mixing pressure is 18MPa, mixing chambers temp is 40 ℃, temperature of rotor is 35 ℃, dump temperature is 105 ℃, and two sections rubber master batch and oil-filled insoluble sulfur, accelerator NS, accelerant CZ are dropped into mixing chamber with anti-scorching agent CTP, and to utilize the rotor rotation to carry out mixing, carries out binder removal after mixing 170 seconds and obtain finished product.This finished product its physicals after testing sees Table 1.
Table 1
Physicals Embodiment 1 Embodiment 2 Embodiment 3
Mooney viscosity 54.9 59.2 53.2
Time of scorch 12:41 11:52 14:31
ML 2.16 2.02 2.41
MH 18.11 17.56 18.21
T10 3.21 4.16 3.06
T90 7.5 9.33 7.09
Hardness 63 61 64
Elongation % 537 485 524
Tensile strength (MPa) 30 25.4 33.8
100% stretches surely 2.7 2.3 3.6
300% stretches surely 12.8 13.5 15.7
Tear brute force (KN/m) 80.8 60.7 68.3
Deflect be full of cracks (ten thousand times) 18.8 12 19.1
Compression heat generation (℃) 47.5 51.1 46.8
Hardness 65 63 65
Elongation % 423 465 405
Tensile strength (MPa) 24.3 24.1 23.9
100% stretches surely 3.7 3.1 3.6
300% stretches surely 16.8 15.9 17.3
Tear brute force (KN/m) 64.6 55.1 55.8
And in the present invention:
The chemistry peptizer: Wuhan Jinghe Chemical Co., Ltd produces, and commodity are called SJ-103.
Anti-aging agent 4020: Shandong Sheng'Ao Chemical Co., Ltd produces, and commodity are called anti-aging agent 4020, and chemical name is N-(1, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine.
Anti-aging agent RD: the chemical plant, Nanjing produces, and commodity are called anti-aging agent RD, chemical name 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer.
Microcrystalline Wax: Shanghai Lvling Special Wax Product Factory produces, and trade name is a Wax-for preventing rubber.
Accelerant CZ: Dan County, Shandong chemical industry company limited produces, and commodity are called CZ, chemistry N cyclohexyl 2 benzothiazole sulfenamide by name.
Accelerator NS: the magnificent chemical industry in Zibo company limited produces, and commodity are called NS, chemistry N tert butyl benzothiazole 2 sulfenamide by name.
Fatigue protective agent G-108: the Huangyan East Sea, Taizhou city chemical industry company limited produces, and commodity are called G-108.
Oil-filled insoluble sulfur: inferior field, Yingkou chemical industry company limited produces, trade(brand)name IS6033, chemistry insoluble sulfur by name.
Anti-scorching agent CTP: Yanggu China safe chemical industry company limited produces, and commodity are called anti-scorching agent CTP, chemistry N-cyclohexyl thio neck by name Phthalimide.

Claims (1)

1. the preparation method of all-steel radial ply tyre tread base comprises following steps:
One section mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40~50rmp, mixing pressure is 17~19MPa, mixing chambers temp is 35~45 ℃, temperature of rotor is 30~40 ℃, dump temperature is 135~160 ℃, weighing natural gum SMR20 and chemical peptizer then, utilize the rotor rotation to carry out natural gum SMR20 plasticated 20~40 seconds in mixing chamber, then in mixing chamber, add white carbon black, silane coupling agent Si-69, zinc oxide, stearic acid, anti-aging agent 4020, anti-aging agent RD, Microcrystalline Wax and fatigue protective agent G-108, and utilize rotor and natural gum SMR20 to carry out mixing 20~40 seconds in mixing chamber, adding carbon black then in the mixing chamber carried out mixing 50~70 seconds, binder removal is carried out in mixing end, and this glue is one section rubber master batch;
Leave standstill for the first time: the rubber master batch with a section after mixing places air to be cooled to normal temperature;
Two-stage mixing: start Banbury mixer, the rotor speed that Banbury mixer is set is 40~50rmp, pressure is 17~19MPa, mixing chambers temp is 35~45 ℃, temperature of rotor is 30~40 ℃, and dump temperature is 135~160 ℃, and the rubber master batch after leaving standstill is for the first time dropped into Banbury mixer, refining glue carried out binder removal in 90~110 seconds, and this glue is two sections rubber master batch;
Leave standstill for the second time: place air to be cooled to normal temperature the rubber master batch behind the two-stage mixing;
Refining eventually: start Banbury mixer, the rotor speed that Banbury mixer is set is 20~25rmp, mixing pressure is 16~18MPa, mixing chambers temp is 25~40 ℃, temperature of rotor is 25~35 ℃, dump temperature is 90~105 ℃, and two sections rubber master batch and oil-filled insoluble sulfur, accelerator NS, accelerant CZ are dropped into mixing chamber with anti-scorching agent CTP, and to utilize the rotor rotation to carry out mixing, carries out binder removal after mixing 140~170 seconds and obtain finished product;
The add-on of various materials is as follows: natural gum SMR20 is 100 weight parts, the chemistry peptizer is 0.1~0.5 weight part, carbon black is 30~45 weight parts, white carbon black is 7~15 weight parts, zinc oxide is 3~5 weight parts, silane coupling agent Si-69 is 1.5~3 weight parts, stearic acid is 1.5~3 weight parts, and anti-aging agent 4020 is 1~2 weight part, and Microcrystalline Wax is 0.5~2 weight part, anti-aging agent RD is 0.5~2 weight part, fatigue protective agent G-108 is 1~2 weight part, and oil-filled insoluble sulfur is 2~3 weight parts, and accelerator NS is 0.5~1 weight part, accelerant CZ is 0.5~1 weight part, and anti-scorching agent CTP is 0.1~0.5 weight part.
CN2008101557661A 2008-10-09 2008-10-09 All-steel radial ply tyre tread base and preparation method thereof CN101381482B (en)

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