Utilize sizing material and the compounding process and the application of the tire belt of reclaimed rubber
Technical field
The present invention relates to the sizing material of tire, relate in particular to a kind of compounding process and the application of this sizing material on the preparation tire of sizing material and this sizing material of the tire belt that utilizes reclaimed rubber.
Background technology
Constantly soaring along with crude oil price in recent years, a lot of natural collagen places of production are cut down rubber tree and change and plant palm tree, and oil price is quick-fried rises with reply to utilize palm-kernel to produce biochemical diesel oil, makes originally very nervous natural rubber resource deficient more.Along with the continuous rise in price of natural gum, add that oil price soars, also when the river rises the boat goes up to have caused the synthetical glue valency.Present synthetical glue price one rises and rises again, and SBR is near the natural gum price, and the BR price will be higher than the natural gum price for some time, and the price increase space of tire is very limited.Caused so a lot of tire enterprise particularly oblique tire enterprise be difficult to keep, even the good all-steel radial tyre of gaining is in recent years also had difficulty in taking a step.How to break this deadlock, face natural gum directly, synthetical glue significantly appreciates, probe into the 3rd rubber sources to having carved the stage that to delay.
Reclaimed rubber is to one of primary product of damaged tire and scrap rubber comprehensive utilization.In the reclaimed rubber industry, proposed at present to restore the notion of glue, and had manufacturer production to go out the high-quality reclaimed rubber of high-tenacity.The application of reclaimed rubber not only reduces the cost of rubber item, increases economic efficiency, and for saving rubber sources and environment protection very big effect is arranged simultaneously, is the embodiment of recycling economy in rubber industry.Damaged tire except that the reclaimed rubber of producing each class and oil refining, the micelle of also production various uses and rubber powder.Micelle is mainly used in the road surface of physical culture runway and park leisure center, also is used for motorway abroad.
Reclaimed rubber discloses the application of reclaimed rubber to agricultural tyre tread rubber Effect on Performance (" tire industry " 2008 the 28th volume), and its production formula is: NR 40, and SBR 30, BR 30, reclaimed rubber 16, carbon black 61, zinc oxide 4, stearic acid 3, antioxidant 4010NA 1, antioxidant D KF-50 2, protection wax 1.5, aromatic hydrocarbon oil 10, Sulfur/accelerant N OBS 2.4, other are 3.5 years old.Big compatibility test sizing material is mixing in Banbury mixer, and calendering process is: cross roller in NR broken-(down)rubber, BR, SBR, reclaimed rubber and small powder → carbon black → aromatic hydrocarbon oil → binder removal → mill more than 3 times, and the cool glue of rule, temperature is reduced to below 100 ℃.Sulphurization and promotor in the mill of XK2560 type, it is even to smash glue, and following sheet warehouse-in is stand-by.For the sizing material that utilizes reclaimed rubber as tire belt open the report do not arranged also.
Summary of the invention
For the sizing material of the tire belt of realizing the regeneration of reclaimed rubber, an object of the present invention is to provide utilizing reclaimed rubber, this sizing material is applicable to tire belt, and properties of rubber can satisfy index request, can be significantly reduced to this.Second purpose of the present invention provides the compounding process of this sizing material.The 3rd purpose of the present invention provides the tire that adopts above-mentioned sizing material.
In order to realize first above-mentioned purpose, the tire belt layer sizing that utilizes reclaimed rubber of the present invention, this sizing material is made up of following composition by weight:
Natural rubber 70~90 reclaimed rubbers 10~30
Carbon black 40~55 adhesion promotors 3.50~8.50
Activator 5.00~12.00 anti-aging agent 2.00~5.00
Vulcanizing agent 2.00~5.00 vulcanization accelerators 0.80~1.50
Wherein, total umber of described natural rubber and reclaimed rubber is 100 parts.
As preferably, this sizing material is made up of following composition by weight:
Natural rubber 70~90 reclaimed rubbers 10~30
Carbon black 40~50 adhesion promotors 3.50~5.50
Activator 7.00~9.00 anti-aging agent 2.00~4.00
Vulcanizing agent 2.00~5.00 vulcanization accelerators 0.80~1.50
Wherein, total umber of described natural rubber and reclaimed rubber is 100 parts.
As preferred again, this sizing material is made up of following composition by weight:
Natural rubber 70~90 reclaimed rubbers 10~30
Carbon black 48.0 adhesion promotors 4.50
Activator 8.00 anti-aging agent 3.00
Vulcanizing agent 4.00 vulcanization accelerators 1.00
Wherein, total umber of described natural rubber and reclaimed rubber is 100 parts.
As preferably, above-mentioned adhesion promotor adopts adhesion promotor FA608, Resorcinol-80 and capric acid cobalt; Wherein, adhesion promotor FA608 is 2.0~5.0 parts, and Resorcinol-80 is 0.5~1.2 part, and the capric acid cobalt is 0.45~1.25 part.Adhesion promotor FA608 be solid melamine type tackiness agent (be by adhesive A, chemical name is a hexamethoxy methyl cyanuramide, be called for short HM) with the inert filler white carbon black product after compound, Rong Mao chemical industry company limited in Yixing, Jiangsu produces.
As preferably, above-mentioned activator adopts wet oxidation zinc or stearic acid.
As preferably, above-mentioned anti-aging agent adopts anti-aging agent 4020 and anti-aging agent RD; Wherein, anti-aging agent 4020 is 0.5~2.0 part, and anti-aging agent RD is 0.8~4.0 part.
As preferably, above-mentioned vulcanizing agent and vulcanization accelerator adopt vulcanizing agent HDOT20, accelerant N OBS, accelerator NS, accelerant C TP; Wherein, vulcanizing agent HDOT20 is 2~5 parts, and accelerant N OBS is 0.2~0.6 part, and accelerator NS is 0.2~0.6 part, and accelerant C TP is 0.1~0.3 part.
In order to realize second above-mentioned purpose, the compounding process of above-mentioned belt sizing material, this method comprises the steps:
A) rubber master batch is plasticated: add natural rubber in Banbury mixer, press floating weight to carry stone roller in 60~70 seconds, add the part carbon black, pressing floating weight was 30~40 kilowatt-hours to the output energy in 10~20 seconds, 40~50 rev/mins of binder removals;
B) one section mixing: in Banbury mixer, add rubber, adhesion promotor, activator, anti-aging agent and the part carbon black plasticate, press floating weight to carry stone roller in 25~35 seconds, press floating weight to carry stone roller in 30~40 seconds, 40 rev/mins~50 rev/mins binder removals;
C) two-stage mixing: add mixing rubber and part carbon black and press floating weight to carry stone roller in 55~65 seconds in Banbury mixer, pressing floating weight was 26~30 kilowatt-hours to the output energy in 10~20 seconds, 40 rev/mins~30 rev/mins binder removals;
D) add sulphur technology: two-stage mixing glue adds vulcanizing agent and vulcanization accelerator, presses floating weight to carry stone roller in 25~35 seconds and keeps 1~3 second, presses floating weight to carry stone roller in 25~35 seconds, and pressing 25~35 seconds is 3~7 kilowatt-hours to the output energy, binder removal.
As preferably, the above-mentioned operation of plasticating is adopting the F370 Banbury mixer, adds the sulphur operation and adopts the F270 Banbury mixer.
In order to realize the 3rd above-mentioned purpose, the present invention also provides a kind of tire, and the sidewall of this tire adopts the above-mentioned described tire belt rubber vulcanization of each technical scheme to make.
The present invention adopts reclaimed rubber to substitute natural gum, and establishing reclaimed rubber is the status of the 3rd rubber sources of natural gum and synthetical glue, rewrites reclaimed rubber only conduct " mixing " in the rubber item industry, under the prerequisite that guarantees tire quality, reduces cost significantly.Extract the steel wire of belt sizing material of the present invention performance, processing characteristics can satisfy the requirement of tire belt layer sizing substantially.
Embodiment
Embodiment 1
Utilize the tire belt layer sizing of reclaimed rubber, this sizing material is made up of following composition by weight:
Natural rubber NR 70 reclaimed rubber RR 30
Carbon black N326 48.00 adhesion promotor FA608 3.00
Resorcinol-80 0.80 capric acid cobalt 0.75
Stearic acid 8.00 anti-aging agent 4,020 1.00
Anti-aging agent RD 2.00 HDOT20 4.00
Accelerant N OBS 0.4 accelerator NS 0.4
Accelerant C TP 0.20
Wherein, total umber of described natural rubber, cis-1,4-polybutadiene rubber and reclaimed rubber is 100 parts.
The compounding process of above-mentioned sizing material, this method comprises the steps:
E) rubber master batch is plasticated: add natural rubber in Banbury mixer, press floating weight to carry stone roller in 65 seconds, add the part carbon black, pressing floating weight was 35 kilowatt-hours to the output energy in 15 seconds, 45 rev/mins of binder removals;
F) one section mixing: in Banbury mixer, add rubber, adhesion promotor, activator, anti-aging agent and the part carbon black plasticate, press floating weight to carry stone roller in 30 seconds, press floating weight to carry stone roller in 35 seconds, 40 rev/mins~50 rev/mins binder removals;
G) two-stage mixing: add mixing rubber and part carbon black and press floating weight to carry stone roller in 60 seconds in Banbury mixer, pressing floating weight was 28 kilowatt-hours to the output energy in 15 seconds, 40 rev/mins~30 rev/mins binder removals;
H) add sulphur technology: two-stage mixing glue adds vulcanizing agent and vulcanization accelerator, presses floating weight to carry stone roller in 30 seconds and keeps 2 seconds, presses floating weight to carry stone roller in 30 seconds, and pressing 30 seconds is 6 kilowatt-hours to the output energy, binder removal.
Embodiment 2
Utilize the tire belt layer sizing of reclaimed rubber, this sizing material is made up of following composition by weight:
Natural rubber NR 80 reclaimed rubber RR 20
Carbon black N326 50.00 adhesion promotor FA608 2.50
Resorcinol-80 0.70 capric acid cobalt 0.60
Stearic acid 7.00 anti-aging agent 4,020 0.80
Anti-aging agent RD 1.80 HDOT20 3.50
Accelerant N OBS 0.34 accelerator NS 0.35
Accelerant C TP 0.20
Wherein, total umber of described natural rubber, cis-1,4-polybutadiene rubber and reclaimed rubber is 100 parts.
The compounding process of the sizing material of present embodiment is as described in the embodiment 1.
Embodiment 3
Utilize the tire belt layer sizing of reclaimed rubber, this sizing material is made up of following composition by weight:
Natural rubber NR 90 reclaimed rubber RR 10
Carbon black N326 52.00 adhesion promotor FA608 2.00
Resorcinol-80 0.80 capric acid cobalt 0.75
Stearic acid 7.60 anti-aging agent 4,020 1.20
Anti-aging agent RD 2.40 HDOT20 5.00
Accelerant N OBS 0.50 accelerator NS 0.50
Accelerant C TP 0.30
Wherein, total umber of described natural rubber, cis-1,4-polybutadiene rubber and reclaimed rubber is 100 parts.
The compounding process of the sizing material of present embodiment is as described in the embodiment 1.
The above embodiments 1, embodiment 2, embodiment 3 test-results data and the conventional data that require are as shown in the table:
The steel wire of embodiment 1, embodiment 2, embodiment 3 is extracted the requirement that performance, processing characteristics can satisfy the tire belt layer sizing substantially as can be seen from the above table.
Embodiment 4
The rubber unvulcanizate that embodiment 1, embodiment 2 or embodiment 3 obtain prepares tire as the belt sizing material of tire.