CN112266507B - Tire rubber material matched with cobalt-containing steel cord of coating and preparation method thereof - Google Patents
Tire rubber material matched with cobalt-containing steel cord of coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a tire rubber material matched with a plated cobalt-containing steel cord, which comprises, by weight, 100 parts of rubber components, 55-75 parts of carbon black, 8-10 parts of zinc oxide, 1.5-2.5 parts of an anti-aging agent, 5-7 parts of sulfur, 0.5-2 parts of an accelerator NS, 0.5-1.5 parts of stearic acid, 0.1-0.5 part of an anti-scorching agent CTP, 5-7 parts of an adhesive RA-65 and 1.5-2.5 parts of resorcinol formaldehyde resin. The invention changes the accelerator NS with faster vulcanization speed and adds the scorch retarder after removing the cobalt neocaprate in the original formula, thus solving the problem of vulcanization speed; meanwhile, 0.5-1.5 parts of stearic acid is added into the formula, the stearic acid reacts with ZnO on the surface of the steel cord to generate zinc stearate, and cobalt in the steel cord can quickly contact with a tire rubber material to promote the proceeding of an adhesion reaction; finally, the adhesive performance of the formula of the application is equivalent to that of the original formula by the adhesive RA-65 and the resorcinol formaldehyde resin, the basic physical properties of the tire rubber material are equivalent, the heat is reduced, and the anti-cracking performance is improved.
Description
Technical Field
The invention belongs to the technical field of tire rubber, and particularly relates to a tire rubber material matched with a cobalt-containing steel cord of a coating and a preparation method thereof.
Background
As is well known, the steel cord is used for a belted layer of a semi-steel radial tire, a belted layer and a tire body of an all-steel radial tire, is a main stressed component of the tire, and plays a key role in ensuring that the tire obtains good durability, safety, performance of multiple retreading and the like.
At present, the traditional steel cord adopts a brass plating layer, and in general, in order to ensure the adhesive property of the steel cord and rubber, cobalt salt is required to be added into a formula, but cobalt is also an oxidation catalyst, can accelerate the oxidation of diene rubber molecules, and simultaneously accelerates the crack growth rate of the rubber. Therefore, the becket family develops a new coating of the steel cord, adds the cobalt element into the coating of the steel cord, cancels the use of cobalt salt in the sizing material, improves the aging, crack resistance and other properties of the sizing material, but removes the cobalt salt in the sizing material, and simultaneously reduces the initial adhesive property of the steel cord and the sizing material by nearly 20 percent.
Disclosure of Invention
The invention aims to provide a tire rubber material matched with a cobalt-containing steel cord of a coating to overcome the technical problems.
The technical purpose of the invention is realized by the following technical scheme:
a tire rubber material used in cooperation with a plated cobalt-containing steel cord comprises, relative to 100 parts by weight of rubber components, 55-75 parts of carbon black, 8-10 parts of zinc oxide, 1.5-2.5 parts of an anti-aging agent, 5-7 parts of sulfur, 0.5-2 parts of an accelerator NS, 0.5-1.5 parts of stearic acid, 0.1-0.5 part of an anti-scorching agent CTP, 5-7 parts of an adhesive RA-65 and 1.5-2.5 parts of resorcinol formaldehyde resin.
Further, the weight portion of the adhesive RA-65 is 6 to 7 portions; the resorcinol formaldehyde resin is 2-2.5 parts by weight.
Further, the weight ratio of the adhesive RA-25 to the resorcinol-formaldehyde resin is 2.8-3.3.
Further, the weight ratio of the adhesive RA-25 to the resorcinol-formaldehyde resin is 3.
Further, the adhesion promoter HTS is included in an amount of 0.3 to 0.8 parts by weight per 100 parts by weight of the rubber component.
Further, the rubber composition comprises, relative to 100 parts by weight of rubber component, 65-70 parts of carbon black, 9-10 parts of zinc oxide, 1.8-2.0 parts of anti-aging agent, 6-6.4 parts of sulfur, 0.7-1 part of accelerator NS, 0.7-0.9 part of stearic acid and 0.2-0.4 part of antiscorching agent CTP.
Another object of the present invention is to provide a method for preparing a tire compound for use with a plated cobalt-containing steel cord, comprising the steps of:
s1, weighing raw materials according to parts by weight, adding natural rubber, zinc oxide, an anti-aging agent and resorcinol formaldehyde resin into a mixing roll, performing pressurization mixing on a top bolt for 20-40S, adding carbon black into a top bolt, wherein the added amount of the carbon black is 50-80% of the total mass of the carbon black, performing pressurization mixing on the top bolt for 25-45S, adding the rest carbon black into the top bolt, performing pressurization mixing on the top bolt for 25-45S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a section of mixed rubber;
s2, performing pressurization mixing on the first-stage rubber compound obtained in the step S1 for 30-60S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a second-stage rubber compound;
s3, pressurizing and mixing the two-stage rubber compound obtained in the step S2 for 30-60S, lifting the rubber compound for 5-15S, pressurizing and mixing the mixture until the temperature is 160-170 ℃, discharging the rubber compound, and discharging the rubber compound to obtain three-stage rubber compound;
and S4, adding stearic acid, sulfur, an adhesive RA-65, an accelerator, a steel wire adhesion accelerator HTS and an anti-scorching agent CTP into the three-stage rubber compound obtained in the step S3, pressurizing for 35S-55S by using a top bolt, extracting for 5S-15S, pressurizing and mixing for 30S-50S, extracting for 5S-15S, pressurizing and mixing to the temperature of 95-110 ℃, discharging rubber, and discharging sheets.
Furthermore, the processing interval time among the step S1, the step S2, the step S3 and the step S4 is more than or equal to 4h.
In the above, the pressure kneading temperature in step S1, step S2, and step S3 is 165 ℃, and the pressure kneading temperature in step S4 is 105 ℃.
Has the advantages that:
the invention changes the accelerator NS with faster vulcanization speed and adds the scorch retarder after removing the cobalt neocaprate in the original formula, thus solving the problem of vulcanization speed; meanwhile, 0.5-1.5 parts of stearic acid is added into the formula, the stearic acid reacts with ZnO on the surface of the steel cord to generate zinc stearate, cobalt in the steel cord can quickly contact with the tire rubber material to promote the adhesive reaction, and compared with the original formula, the adhesive performance is still reduced by about 5-10%, the basic physical performance of the tire rubber material is equivalent, the heat generation is reduced, and the anti-cracking performance is improved;
meanwhile, the adhesive RA-65 used in the present invention undergoes a resinification reaction with the resorcinol-formalin resin A250 to form a resin condensate to enhance adhesion, and the weight ratio of the adhesive RA-65 to the resorcinol-formalin resin A250 is preferably limited to 2.8 to 3.3, so that condensation occurs between an excessive amount of the adhesive RA-65 in addition to the reaction with the resorcinol-formalin resin A250Hydrogen is generated, and the presence of hydrogen can inhibit metal diffusion, thereby inhibiting excessive Cu generation x The S further improves the adhesive force, so that the adhesive property of the adhesive is close to or even exceeds that of the original formula; at the moment, the cobalt element is removed, so that the cracking resistance of the steel is improved.
Detailed Description
In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like, indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the designated device or structure must have a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the traditional technology, the steel cord is a common steel wire, the plating layer of the steel cord does not contain cobalt element, and the formula of the tire rubber compound matched with the steel cord is as follows: relative to 100 parts by weight of rubber components, the rubber composition comprises 55-75 parts of carbon black, 8-10 parts of zinc oxide, 1.5-2.5 parts of anti-aging agent, 0.5-2 parts of cobalt neodecanoate, 5-7 parts of sulfur and 0.5-2 parts of accelerator DZ, according to the traditional formula, when a steel cord and a tire rubber material react, the ZnO on the surface can slow down the diffusion of Cu and Zn in a coating to prevent excessive Cu from being generated x S, thereby maintaining better adhesion properties of the tire compound. The invention is used for matching with a new coating steel cord developed by Becatel group, zinc element and oxygen element are distributed on the surface of the coating of the new coating steel cord, and cobalt element is mainly distributed in the coating on the surface, therefore, after cobalt neodecanoate is adjusted to the coating, znO on the surface hinders the contact of cobalt and tire rubber, so that cobalt can not directly promote the adhesion reaction, and the initial adhesion of the tire rubber can be reduced by about 20%.
The formula is improved, after cobalt neocaprate is removed, the vulcanization speed can be reduced by using the accelerator DZ, and on the other hand, the type of the accelerator is adjusted, the accelerator NS with higher vulcanization speed is changed, and the scorch retarder is added, so that the problem of vulcanization speed is solved; in order to improve the inhibition effect of the zinc oxide of the coating on cobalt, 0.5-1.5 parts of stearic acid is added into the formula, the stearic acid reacts with ZnO on the surface of the steel cord to generate zinc stearate, cobalt in the steel cord can quickly contact with the tire rubber material to promote the adhesive reaction, and compared with the original formula, the adhesive performance is reduced by about 5-10%, the basic physical performance of the tire rubber material is equivalent, the heat generation is reduced, and the anti-cracking performance is improved.
Further, the reason why the adhesion property of the improved formulation is still lowered as compared with the conventional formulation is that zinc oxide on the surface of the steel cord is consumed and excessive Cu cannot be suppressed x The generation of S causes the adhesive attaching rate to be reduced and the improvement degree of the adhesive force is limited; in this regard, the modified formulation is further modified by adding resorcinol-formaldehyde resin and an adhesive RA-65 to the formulation to cause resinification reaction between the adhesive RA-65 and the resorcinol-formaldehyde resin A250 to generate a resin condensate to enhance adhesion; while the weight ratio of the adhesive RA-65 to the resorcinol-formalin resin A250 is preferably limited to 2.8 to 3.3, so that the adhesive RA-65, in addition to reacting with the resorcinol-formalin resin A250, generates hydrogen by condensation between the excess adhesive RA-65, and the presence of hydrogen inhibits metal diffusion, thus serving to suppress the generation of excess Cu x And the adhesive force is further improved by the action of S.
Based on the above formulation adjustments, the present application may further add a wire adhesion promoter HTS to the formulation to further enhance the adhesion properties of the tire compound.
By the above description, the formulation for the present application is as follows:
a tire rubber material matched with a plated cobalt-containing steel cord comprises, by weight, 55-75 parts of carbon black, 8-10 parts of zinc oxide, 1.5-2.5 parts of an anti-aging agent, 5-7 parts of sulfur, 0.5-2 parts of an accelerator NS, 0.5-1.5 parts of stearic acid and 0.1-0.5 part of an anti-scorching agent CTP, relative to 100 parts of rubber components.
Meanwhile, according to the above description, the formula is further adjusted to include 5-7 parts of adhesive RA-65 and 1.5-2.5 parts of resorcinol formaldehyde resin, and the better technical scheme is as follows: the weight ratio of the adhesive RA-25 to the resorcinol-formaldehyde resin is 2.8-3.3, and the best technical scheme is as follows: the weight ratio of the adhesive RA-25 to the resorcinol-formaldehyde resin is 3.
Further, the formula is further added with: the adhesion promoter HTS is also included in an amount of 0.3 to 0.8 parts per 100 parts by weight of the rubber component.
The preparation process of the formula is as follows:
s1, weighing raw materials according to parts by weight, adding natural rubber, zinc oxide, an anti-aging agent and resorcinol formaldehyde resin into a mixing roll, performing pressurization mixing on a top bolt for 20-40S, adding carbon black into a top bolt, wherein the added amount of the carbon black is 50-80% of the total mass of the carbon black, performing pressurization mixing on the top bolt for 25-45S, adding the rest carbon black into the top bolt, performing pressurization mixing on the top bolt for 25-45S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a section of mixed rubber;
s2, performing pressurization mixing on the first-stage rubber compound obtained in the step S1 for 30-60S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a second-stage rubber compound;
s3, pressurizing and mixing the two-stage rubber compound obtained in the step S2 for 30-60S, lifting the rubber compound for 5-15S, pressurizing and mixing the mixture until the temperature is 160-170 ℃, discharging the rubber compound, and discharging the rubber compound to obtain three-stage rubber compound;
and S4, adding stearic acid, sulfur, an adhesive RA-65, an accelerator, a steel wire adhesion accelerator HTS and an anti-scorching agent CTP into the three-stage rubber compound obtained in the step S3, pressurizing for 35S-55S by using a top bolt, extracting for 5S-15S, pressurizing and mixing for 30S-50S, extracting for 5S-15S, pressurizing and mixing to the temperature of 95-110 ℃, discharging rubber, and discharging sheets.
In the above, the processing interval time between the step S1, the step S2, the step S3 and the step S4 is not less than 4h.
In the above, the pressure kneading temperature in the step S1, the step S2, and the step S3 is preferably 165 ℃, and the pressure kneading temperature in the step S4 is preferably 105 ℃.
According to the preparation method, zinc oxide is added in the first step of rubber compound preparation, stearic acid is added together with an accelerator in the last step of rubber compound preparation, so that no proper catalyst is available in the last step of preparation, the reaction time (75 s-135 s) and the reaction temperature (95-110 ℃, preferably 105 ℃) are controlled, the combined reaction degree of stearic acid and zinc oxide is limited, and the tire rubber compound can react with the zinc oxide on the surface layer of the steel cord.
In this regard, the following examples and comparative examples are provided to illustrate the formulations of the present application, and are specifically set forth in Table 1.
TABLE 1
| TABLE 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Example 1 |
| Natural rubber SMR10 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| N326 carbon black | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Zinc oxide | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Anti-aging agent 4020 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 |
| Cobalt neodecanoate | 1.4 | / | / | / | / | / | / |
| Insoluble sulphur HDOT20 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 |
| Accelerant DZ | 0.7 | 0.7 | / | / | / | / | / |
| Accelerator NS | / | / | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Scorch retarder CTP | / | / | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Stearic acid | / | / | / | 0.7 | / | 1.8 | 0.7 |
| Resorcinol Formaldehyde resin A250 | / | / | / | / | 2 | 2 | 2 |
| Adhesive RA-65 | / | / | / | / | 6 | 6 | 5 |
| Steel wire adhesion promoter HTS | / | / | / | / | 0.5 | 0.5 | 0.5 |
| Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 | |
| Natural rubber SMR10 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| N326 carbon black | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Zinc oxide | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Anti-aging agent 4020 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 |
| Cobalt neodecanoate | / | / | / | / | / | / | / |
| Insoluble sulphur HDOT20 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 |
| Accelerant DZ | / | / | / | / | / | / | / |
| Accelerator NS | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Scorch retarder CTP | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Stearic acid | 0.7 | 0.7 | 0.7 | 0.7 | 0.9 | 1.2 | 1.5 |
| Resorcinol Formaldehyde resin A250 | 2 | 2 | 2 | 2.5 | 2 | 2 | 2 |
| Adhesive RA-65 | 6 | 6.6 | 7 | 7 | 6 | 6 | 6 |
| Steel wire adhesion promoter HTS | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
1. The vulcanization speed and the adhesion performance of the examples and comparative examples in table 1 were measured, and the measurement data are shown in table 2:
rheological data: rheological data were measured according to GB/T16584 using a rotorless curing apparatus model MDR2000 from the American ALPHA company under test conditions of 160 ℃ for 30 minutes.
Adhesive property: the drawing force of the steel cord and the proportion of the adhesive attached to the test portion of the drawing test were measured by using a die having a width of 12.5mm under the test conditions of 160 c x 20min with reference to the ASTM method, in which comparative example 1 was reacted with a general steel wire and the other comparative examples and examples were reacted with a cobalt-containing steel wire.
TABLE 2
As can be seen from Table 2, the adhesive properties of examples 1-8 are close to those of comparative example 1, and the adhesive properties of examples 2 and 6 are higher than those of comparative example 1; meanwhile, as compared with example 6, comparative example 6 shows that the weight part of stearic acid is not higher than 1.5 parts, and the vulcanization speed is reduced as in comparative example 6;
from the adhesive properties of examples 2 to 4, it is understood that when the weight ratio of the adhesive agent RA-25 to the resorcinol-formalin resin exceeds 3.3, the adhesive properties are lowered because too much amount of RA-65 condensation causes too much condensation product to affect the adhesive layer, thus lowering the adhesive force.
2. The physical properties of examples 1 to 6 and comparative examples 1, 4 and 6 in table 1 were measured, and the measured data are shown in table 3.
(1) Shore hardness: the Shore hardness of the rubber test pieces was measured at 25 ℃ in accordance with GB/T531.1.
(2) M100 modulus, M300 modulus, tensile strength at break, elongation at break: measured according to GB/T528 (using rubber coupons having the shape of dumbbell 1).
(3) The hysteresis factor: a rubber specimen having a thickness of 2mm was measured for its loss tangent tan. Delta. According to ISO 4664-1 using a Dynamic Mechanical Analyzer (DMA) model GABOMETER 2000, manufactured by GABO, germany, at an ambient temperature of 10% static strain, 0.1% to 5% dynamic strain, a frequency of 10Hz and 60 ℃. Among them, tan δ at 60 ℃ is correlated with heat buildup property of rubber, and the smaller the tan δ value at 60 ℃, the lower the heat buildup.
(4) And (3) crack propagation: according to GB/T13934, a Demo Sixia tester is used for measurement, the same crack length is obtained, and the higher the bending times is, the better the performance is;
(5) Adhesion retention on steam aging for 14 days: according to the ASTM method, a mold with the width of 12.5mm is used, the vulcanization condition is 160 ℃ multiplied by 20min, the extraction force of a vulcanized sample is tested, and the adhesive adhering rate is recorded as an initial value; and placing the sample in a steam box for 14 days, testing the extraction force of the sample after vulcanization, recording the adhesive adhesion rate as an aging value, and taking the aging value/initial value as a retention rate.
Of these, comparative example 1 was reacted with a common steel wire, and the other comparative examples and examples were reacted with a cobalt-containing steel wire.
TABLE 3
As can be seen from Table 3, the adhesion performance and physical properties of examples 1-8 are equivalent to those of comparative example 1, but the crack propagation performance and the adhesion retention under steam aging of examples 1-8 are effectively improved; from a comparison of comparative example 6 with example 6, it is clear that an excess of stearic acid not only affects the vulcanization speed but also reduces the tensile properties (tensile strength at break, elongation at break).
In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the above specific embodiments, which are only used for describing the present invention, and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (7)
1. The preparation method of the tire rubber material matched with the cobalt-containing steel cord of the coating is characterized in that the tire rubber material comprises 55-75 parts of carbon black, 8-10 parts of zinc oxide, 1.5-2.5 parts of anti-aging agent, 5-7 parts of sulfur, 0.5-2 parts of accelerator NS, 0.5-1.5 parts of stearic acid, 0.1-0.5 part of antiscorching agent CTP, 5-7 parts of adhesive RA-65 and 1.5-2.5 parts of resorcinol formaldehyde resin relative to 100 parts of rubber components by weight; the weight ratio of the adhesive RA-25 to the resorcinol-formaldehyde resin is 2.8-3.3;
the method for preparing the tire compound comprises the following steps:
s1, weighing raw materials according to parts by weight, adding natural rubber, zinc oxide, an anti-aging agent and resorcinol formaldehyde resin into a mixing roll, performing pressurization mixing on a top bolt for 20-40S, adding carbon black into a top bolt, wherein the added amount of the carbon black is 50-80% of the total mass of the carbon black, performing pressurization mixing on the top bolt for 25-45S, adding the rest carbon black into the top bolt, performing pressurization mixing on the top bolt for 25-45S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a section of mixed rubber;
s2, performing pressurization mixing on the first-stage rubber compound obtained in the step S1 for 30-60S, performing lifting bolt for 5-15S, performing pressurization mixing to 160-170 ℃, discharging rubber, and discharging sheets to obtain a second-stage rubber compound;
s3, pressurizing and mixing the two-stage rubber compound obtained in the step S2 for 30-60S, lifting the rubber compound for 5-15S, pressurizing and mixing the mixture until the temperature is 160-170 ℃, discharging the rubber compound, and discharging the rubber compound to obtain three-stage rubber compound;
and S4, adding stearic acid, sulfur, an adhesive RA-65, an accelerator, a steel wire adhesion accelerator HTS and an anti-scorching agent CTP into the three-stage rubber compound obtained in the step S3, pressurizing for 35S-55S by using a top bolt, extracting for 5S-15S, pressurizing and mixing for 30S-50S, extracting for 5S-15S, pressurizing and mixing to the temperature of 95-110 ℃, discharging rubber, and discharging sheets.
2. The method of claim 1, wherein the adhesive RA-65 is present in an amount of 6 to 7 parts by weight; the resorcinol formaldehyde resin is 2-2.5 parts by weight.
3. A method of preparing a tire compound for use with coated cobalt-containing steel cords as claimed in claim 1, wherein the weight ratio of said adhesive RA-25 to said resorcinol-formaldehyde resin is 3.
4. A method of producing a tire compound for use with coated cobalt-containing steel cords as claimed in claim 1, characterized by further comprising 0.3 to 0.8 parts of adhesion promoter HTS, relative to 100 parts by weight of rubber component.
5. The method for producing a tire compound used in combination with a plated cobalt-containing steel cord according to claim 1, comprising 65 to 70 parts by weight of carbon black, 9 to 10 parts by weight of zinc oxide, 1.8 to 2.0 parts by weight of an antioxidant, 6 to 6.4 parts by weight of sulfur, 0.7 to 1 part by weight of an accelerator NS, 0.7 to 0.9 part by weight of stearic acid, and 0.2 to 0.4 part by weight of a scorch retarder CTP, based on 100 parts by weight of the rubber component.
6. The method of claim 1 for preparing a tire compound for use with a coated cobalt-containing steel cord, characterized in that: the processing interval time between the step S1, the step S2, the step S3 and the step S4 is more than or equal to 4h.
7. The method of claim 1 for preparing a tire compound for use with a coated cobalt-containing steel cord, characterized in that: the pressure kneading temperature in the steps S1, S2 and S3 was 165 ℃ and the pressure kneading temperature in the step S4 was 105 ℃.
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| CN101191040A (en) * | 2006-11-24 | 2008-06-04 | 四川轮胎橡胶（集团）股份有限公司 | High-performance tyre curtain glue stock containing resorcinol-formaldehyde adhesion system |
| CN103613794A (en) * | 2013-11-25 | 2014-03-05 | 桂林电子科技大学 | Aircraft tire buffer rubber containing resorcinol-formaldehyde adhesion system |
| CN103834071A (en) * | 2014-04-01 | 2014-06-04 | 山东万鑫轮胎有限公司 | Tire transition layer stock and preparation method thereof |
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| CN105440333A (en) * | 2015-12-07 | 2016-03-30 | 赛轮金宇集团股份有限公司 | Cobalt salt-free tire steel wire framework material formula and preparation method thereof |
| KR101948514B1 (en) * | 2017-05-18 | 2019-02-15 | 금호타이어 주식회사 | Pneumatic tire having film innerliner and its manufacturing method |
| CN110256738A (en) * | 2019-06-24 | 2019-09-20 | 黄果树轮胎有限公司 | A kind of environmentally protective all-steel load-bearing radial tire belt compound feed composition and its mixing method |
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2020
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