CN111205791A - Steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof - Google Patents
Steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof Download PDFInfo
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- CN111205791A CN111205791A CN202010086986.4A CN202010086986A CN111205791A CN 111205791 A CN111205791 A CN 111205791A CN 202010086986 A CN202010086986 A CN 202010086986A CN 111205791 A CN111205791 A CN 111205791A
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- parts
- aging
- steel wire
- rubber
- rubber composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J107/00—Adhesives based on natural rubber
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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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0041—Compositions of the carcass layers
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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
- C08L7/00—Compositions of natural rubber
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Ropes Or Cables (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of tires, in particular to a steel wire bonding rubber composition resistant to wet heat aging and steam aging. Comprises the following components: 1-100 parts of natural rubber, 20-100 parts of reinforcing filler, 1-5 parts of adhesive resin and 3-7 parts of adhesive. Has the advantages that: the invention solves the problem of poor aging resistance of sizing material caused by cobalt salt, and reduces the toxic action of cobalt salt on environment and human body in the using process. According to the invention, no cobalt salt is added in the formula, so that the contact between a human body and the cobalt salt is avoided in the production process, and a more green tire production process is ensured; meanwhile, the catalytic aging effect of cobalt salt on rubber hydrocarbon is avoided, so that the durability of the adhesive rubber is better, the retention rate of the adhesive force under the condition of damp-heat aging is better, and the adhesive degradation is slower after steam aging, which has great significance for improving the service life and the retreadability of the tire and has great value for the terminal user of the truck tire.
Description
Technical Field
The invention relates to the technical field of tires, in particular to a steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof.
Background
The automobile tire generally has no problem in the initial use process, but the tire frequently has the separation phenomenon between framework materials and rubber when the automobile tire moves for a long time on high-frequency, high-load and complex road conditions, namely the durability of the tire is poor, and the analysis reason is mainly generated by the damage of a rubber adhesive layer caused by the aging effect of the tire in the long-term use process.
For the reasons, how to improve the aging resistance of the adhesion between rubber and a framework material is a key technical problem which needs to be solved urgently at present in order to improve the durability of a tire and the service life of the tire, particularly for improving the retreading performance of the tire.
The cobalt salt is an effective adhesion promoter for rubber and brass plated steel wires, plays a role in controlling the reaction rate in the generation reaction of active cuprous sulfide playing a role in adhesion, and quickly forms a metal sulfide layer on the surface of the steel cord. Cobalt salts reduce the transition from the amorphous to the crystalline state of the adhesive layer after humid heat aging, but have the disadvantage that the presence of cobalt salts in the compound accelerates the aging of the rubber hydrocarbon. Therefore, although cobalt salt is an indispensable critical material for adhesion between rubber and steel wire framework material, the presence of cobalt salt in rubber accelerates the aging of rubber hydrocarbon, which is contradictory.
Disclosure of Invention
The invention provides a steel wire adhesive rubber composition resisting wet heat aging and steam aging for a green tire.
Specifically, aiming at the defects of the prior art, the invention provides the following technical scheme:
the invention provides a steel wire bonding rubber composition resistant to damp-heat aging and steam aging, which comprises the following raw materials: 1-100 parts of natural rubber, 20-100 parts of reinforcing filler, 1-5 parts of adhesive resin and 3-7 parts of adhesive.
Further, the rubber composition comprises 1-100 parts of natural rubber, 20-80 parts of reinforcing filler, 1-3 parts of bonding resin and 3-7 parts of adhesive.
Further, the rubber composition further comprises 3-7 parts of a vulcanizing agent, 0.5-3 parts of an accelerator and 1-5 parts of an anti-aging agent.
Further, the natural rubber is a copolymer of cis 1, 4-polyisoprene.
Further, the reinforcing filler comprises all types of carbon black and white carbon black with different specific surface areas, and can be directly or indirectly physically and chemically combined with rubber molecules. The DBP absorption value of the carbon black is 36-119 cm3100g, the nitrogen specific surface area is 8-149 m2(ii)/g; the specific surface area of the white carbon black nitrogen adsorption is 85-200 g/m2。
Further, the adhesive resin is resorcinol-formaldehyde resin, phenol-formaldehyde resin, or resorcinol.
Further, the vulcanizing agent is insoluble sulfur.
Further, the adhesive is one or a mixture of two of RA65 and HMMM.
The invention also provides an application of the steel wire bonding rubber composition with the resistance to wet heat aging and steam aging, which is applied to steel wire belt layers and tire body rubber materials.
Further, the rubber composition is used in combination with a steel wire having a three-phase alloy coating layer, and the coating layer of the steel wire contains 67% of Cu, 29% of Zn, and 4% of Co.
Has the advantages that: the invention solves the problem of poor aging resistance of sizing material caused by cobalt salt, and reduces the toxic action of cobalt salt on environment and human body in the using process. According to the invention, no cobalt salt is added in the formula, so that the contact between a human body and the cobalt salt is avoided in the production process, and a more green tire production process is ensured; meanwhile, the catalytic aging effect of cobalt salt on rubber hydrocarbon is avoided, so that the durability of the adhesive rubber is better, the retention rate of the adhesive force under the condition of damp-heat aging is better, and the adhesive degradation is slower after steam aging, which has great significance for improving the service life and the retreadability of the tire and has great value for the terminal user of the truck tire.
Detailed Description
A steel wire adhesive rubber composition resistant to wet heat aging and steam aging comprises the following raw materials: 1-100 parts of natural rubber, 20-100 parts of reinforcing filler, 1-5 parts of adhesive resin and 3-7 parts of adhesive. The rubber composition is used for a steel wire belt layer and a carcass rubber material, and is used together with a steel wire with a three-phase alloy coating, wherein the coating of the steel wire comprises 67% of Cu, 29% of Zn and 4% of Co, and the coating distributes the cobalt at the position where the cobalt is really needed, namely the cobalt is distributed at the interface of a steel cord and the rubber.
The mixing of the rubber composition can be accomplished by methods known to those skilled in the art of rubber mixing. For example, in the usual case, the components are mixed in at least two stages, namely at least one non-productive mixing stage followed by one productive mixing stage. The rubber, filler, and binder resin are compounded in one or more non-productive compounding stages.
Example 1:
the rubber compositions having the compositions specified in Table 1 were prepared in a BR Banbury mixer using four separate feed mixing stages, three non-productive mixing stages and one productive mixing stage. Mixing the three non-productive stages for about 1-3 min until the rubber temperature reaches 160 ℃, and finishing; the productive stage is carried out for about 1-2.5 min of mixing until the rubber temperature reaches 100 ℃.
The rubber compositions are referred to herein as comparative example 1, comparative example 2, and example 1.
The steel wire drawout properties of the vulcanized samples of comparative example 1, comparative example 2 and example 1 are shown in table 2, and the peel forces of the vulcanized samples of comparative example 1, comparative example 2 and example 1 are shown in table 3.
TABLE 1 rubber composition raw material Table
TABLE 2 tables of wire drawout properties of the vulcanized samples of comparative example 1, comparative example 2 and example 1
Note: the test steel wires corresponding to the vulcanized samples were as follows: comparative example 1 is a brass-plated steel wire; comparative example 2 is a steel wire with a three-phase alloy coating; example 1 is a three-phase alloy coated steel wire.
The result shows that ① the traditional cobalt-containing rubber material has high initial adhesion, but the adhesion performance after aging is reduced, especially the steel wire adhesion performance after steam aging and damp-heat aging is greatly reduced, ② a small amount of cobalt salt rubber material has the initial adhesion value equivalent to that of the cobalt-containing rubber material, the adhesion value after aging is between that of the cobalt-containing rubber material and the cobalt-free rubber material, the initial adhesion value of ③ the cobalt-free rubber material and the steel wire combination of the three-phase alloy coating is lower, the steel wire adhesion performance of the rubber material after heat aging is equivalent to that of the cobalt-containing rubber material, the difference is within 5 percent, the aging change rate is far smaller than that of the existing cobalt-containing rubber material, the steel wire adhesion performance of the rubber composition after steam aging and damp-heat aging is excellent, and is improved by about 20 to 30.
TABLE 3 Peel force tables for comparative example 1, comparative example 2, and example 1 vulcanized samples
The result shows that ① the initial stripping force value of the cobalt-containing sizing material, a small amount of cobalt salt sizing material and the cobalt-free sizing material is equivalent, the stripping force value of the ② aged cobalt-free sizing material and the three-phase alloy coating steel wire rubber-coated cord fabric is obviously superior to that of the combination of the cobalt-containing sizing material and the brass, and particularly the stripping force aging retention rate is excellent after steam aging and damp-heat aging.
Wire drawing may be performed according to the GB/T16586 test method. The higher the reported value, the better the adhesion between the rubber and the steel wire framework material;
the peel force may be performed according to the GB/T532 test method. A higher reported value means better adhesion between the tire overlay ply and the layer.
According to the invention, no cobalt salt capable of accelerating rubber hydrocarbon aging is added into the rubber material, and the rubber material is matched with the steel wire of the three-phase alloy coating, so that the wet heat aging resistance and steam aging resistance of the rubber material can be improved while the steel wire adhesion performance between the rubber material and the framework material is ensured.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The above-described embodiments of the invention are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and not by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A steel wire adhesive rubber composition resistant to wet heat aging and steam aging is characterized by comprising the following raw materials: 1-100 parts of natural rubber, 20-100 parts of reinforcing filler, 1-5 parts of adhesive resin and 3-7 parts of adhesive.
2. The rubber composition according to claim 1, wherein the rubber composition comprises 1 to 100 parts of natural rubber, 20 to 80 parts of reinforcing filler, 1 to 3 parts of binder resin, and 3 to 7 parts of binder.
3. The rubber composition according to claim 2, further comprising 3 to 7 parts of a vulcanizing agent, 0.5 to 3 parts of an accelerator, and 1 to 5 parts of an antioxidant.
4. The rubber composition of claim 3, wherein the adhesive resin is a resorcinol-formaldehyde resin, a phenol-formaldehyde resin, or resorcinol.
5. The rubber composition of claim 3, wherein the adhesive is one or a mixture of RA65 and HMMM.
6. The application of the steel wire bonding rubber composition with the resistance to wet heat aging and steam aging is characterized in that the steel wire bonding rubber composition is applied to a steel wire belt ply and a tire body rubber material.
7. Use according to claim 3, wherein the rubber composition is used in combination with a steel wire coated with a three-phase alloy, the coating of the steel wire comprising 67% Cu, 29% Zn and 4% Co.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010086986.4A CN111205791A (en) | 2020-02-11 | 2020-02-11 | Steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010086986.4A CN111205791A (en) | 2020-02-11 | 2020-02-11 | Steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof |
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| CN111205791A true CN111205791A (en) | 2020-05-29 |
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| CN202010086986.4A Pending CN111205791A (en) | 2020-02-11 | 2020-02-11 | Steel wire bonding rubber composition resistant to wet heat aging and steam aging and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002327158A (en) * | 2001-05-01 | 2002-11-15 | Toyo Tire & Rubber Co Ltd | Rubber composition for adhesion and pneumatic tire |
| 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 |
| CN108559140A (en) * | 2018-05-03 | 2018-09-21 | 江苏通用科技股份有限公司 | A kind of tire belt steel wire sizing material and preparation method thereof |
| CN108586837A (en) * | 2018-05-03 | 2018-09-28 | 江苏通用科技股份有限公司 | A kind of carcass steel wire sizing material and preparation method thereof |
| KR20190083186A (en) * | 2018-01-03 | 2019-07-11 | 한국타이어앤테크놀로지 주식회사 | Tire steel belt, method of manufacturing the same and tire comprising thereof |
-
2020
- 2020-02-11 CN CN202010086986.4A patent/CN111205791A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002327158A (en) * | 2001-05-01 | 2002-11-15 | Toyo Tire & Rubber Co Ltd | Rubber composition for adhesion and pneumatic tire |
| 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 |
| KR20190083186A (en) * | 2018-01-03 | 2019-07-11 | 한국타이어앤테크놀로지 주식회사 | Tire steel belt, method of manufacturing the same and tire comprising thereof |
| CN108559140A (en) * | 2018-05-03 | 2018-09-21 | 江苏通用科技股份有限公司 | A kind of tire belt steel wire sizing material and preparation method thereof |
| CN108586837A (en) * | 2018-05-03 | 2018-09-28 | 江苏通用科技股份有限公司 | A kind of carcass steel wire sizing material and preparation method thereof |
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Application publication date: 20200529 |
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