CN101314651B - Ozone resistant rubber composition - Google Patents
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Abstract
A rubber composite contains natural rubber, diene-synthetic rubber, carbon black, a vulcanizing agent, an active agent and an antiaging agent. The rubber composite is characterized in that the antiaging agent is composed of p-phenylenediamine, resultant of acetone and diphenylamine, micro-crystalline wax and a mixture of n-alkane with an atomicity of 23 to 29, wherein the antiaging agent contains 1 to 6 weight parts of p-phenylenediamine, 1 to 4 weight parts of resultant of acetone and diphenylamine, 0.5 to 2.2 weight parts of micro-crystalline wax, and 0.5 to 5 weight parts of the mixture of n-alkanes with an atomicity of 23 to 29 with respect to 100 weight parts of natural rubber and diene-synthetic rubber. The rubber composite has high ozone resistance and good tensile strength.
Description
Technical field
The invention relates to a kind of ozone resistant rubber combination.
Background technology
Natural rubber hysteresis loss is little, can anti-repeatedly flexural deformation, and suspend in motor car engine, have a wide range of applications in the rubber item such as tire.But, be subjected to the influence of ozone easily and produce crack performance owing to contain more two keys in the natural rubber molecular backbone chain.
The anti-ozone approach of natural rubber is mainly blending modification method, physical protection method and chemical protection method at present.Blending modification method be by with natural rubber and ozone resistance preferably rubber carry out blend, reaching the purpose of anti-ozone ageing, but the shortcoming of this method is to add ozone resistance preferably rubber the time, has reduced the cured properties of natural rubber.Therefore, under the condition that guarantees cured properties, physical protection method and chemical protection method are present practical methods, the physical protection method is by adding saturation isomerism alkane and saturated straight chain alkane to improve the ozone resistance of natural rubber in natural rubber, but this method has reduced the tensile strength of natural rubber when improving the anti-ozone energy of natural rubber energy.The chemical protection method is by adding chemical antiozonidate, relies on that chemical antiozonidate is preferential to react with ozone, thus minimizing ozone to the erosion of natural rubber itself, the chemical protection method has guaranteed the tensile strength of natural rubber, but anti-ozone effect is relatively poor.
For example CN1876700A discloses a kind of tread glue formula of all-steel radial tyre, this prescription is made up of following component: natural rubber 100 weight parts, chemistry peptizer SJ-1030-0.5 weight part, carbon black 50-60 weight part, activator 4.0-6.0 weight part, anti-aging agent 3.0-5.0 weight part, Microcrystalline Wax 0.5-3.0 weight part, heat resistanceheat resistant activator Z-3110.5-2 weight part, physics peptizer Z-2101.0-2.0 weight part, vulcanizing agent sulphur 0.5-2.0 weight part, anti-scorching agent CTP 0.1-0.5 weight part, described anti-aging agent are anti-aging agent RD and anti-aging agent 4020.The shortcoming of this tread rubber is that ozone resistance is poor, is under 40 ℃ of conditions in temperature, glue face cracking after 96 hours, and crackle with the naked eye promptly can be observed.
Therefore, it is good to develop a kind of ozone resistance, has the rubber combination of good tensile strength simultaneously, and being needs the urgent problem that solves at present.
Summary of the invention
The objective of the invention is provides a kind of anti-ozone effective, the rubber combination that has good tensile strength simultaneously in order to overcome the shortcoming of rubber combination ozone resistance difference in the prior art.
The invention provides a kind of rubber combination, said composition contains natural rubber, the diolefine synthetic rubber, carbon black, vulcanizing agent, promoting agent and anti-aging agent, wherein, described anti-aging agent is the Ursol D anti-aging agent, acetone and diphenylamine reaction thing, Microcrystalline Wax and carbonatoms are the normal paraffin mixture of 23-29, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of phenylenediamine anti-aging agent is the 1-6 weight part, and the content of acetone and diphenylamine reaction thing is the 1-4 weight part, the content of Microcrystalline Wax is the 0.5-2.2 weight part, carbonatoms is that the content of the normal paraffin mixture of 23-29 is the 0.5-5 weight part.
The inventor is unexpected to be found, when being used in combination Ursol D anti-aging agent, acetone and diphenylamine reaction thing, Microcrystalline Wax and carbonatoms and being four kinds of anti-aging agent of normal paraffin mixture of 23-29, in the tensile strength that guarantees rubber combination, can improve the ozone resistance of rubber combination significantly.The rubber combination standard film S1-S4 that in embodiment 1-4, obtains, at ozone concn is that 50pphm, temperature are under 40 ℃ the condition, placed 96 hours continuously, rubber combination S1-S4 does not chap, compare with the reference rubber combination CS1-CS3 that Comparative Examples 1-3 obtains, ozone resistance significantly improves.
Embodiment
The invention provides a kind of rubber combination, said composition contains natural rubber, the diolefine synthetic rubber, carbon black, vulcanizing agent, promoting agent and anti-aging agent, wherein, described anti-aging agent is the Ursol D anti-aging agent, acetone and diphenylamine reaction thing, Microcrystalline Wax and carbonatoms are the normal paraffin mixture of 23-29, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of phenylenediamine anti-aging agent is the 1-6 weight part, and the content of acetone and diphenylamine reaction thing is the 1-4 weight part, the content of Microcrystalline Wax is the 0.5-2.2 weight part, carbonatoms is that the content of the normal paraffin mixture of 23-29 is the 0.5-5 weight part.
Under the preferable case, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of phenylenediamine anti-aging agent is the 1-4 weight part, and the content of acetone and diphenylamine reaction thing is that the content of 1-2 weight part, Microcrystalline Wax is that 0.5-1.5 weight part, carbonatoms are that the content of the normal paraffin mixture of 23-29 is the 1-3 weight part.
Among the present invention, described phenylenediamine anti-aging agent is N-(1, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine, N, N '-two (1,4-dimethyl amyl group) one or more in Ursol D, N-cyclohexyl-N '-diphenyl-para-phenylene diamine and N-sec.-propyl-N '-diphenyl-para-phenylene diamine, be preferably N-(1, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine.
Among the present invention, described Microcrystalline Wax is that fusing point is 70-90 ℃, for example can be the 70-90 Microcrystalline Wax, is preferably Microcrystalline Wax No. 70.Microcrystalline Wax can form on rubber combination surface one deck continuously, protective membrane uniformly, ozone resistance that can the Reinforced Rubber composition.
Described acetone and diphenylamine reaction thing can be commercially available, for example Shanghai rubber ingredients factory produce antioxidant BLE, Henan open the antioxidant BLE that antioxidant BLE that logical sequence chemical industry company limited produces and Changzhou Wuzhou Chemical Co., Ltd. produce.
Described carbonatoms is that the normal paraffin mixture of 23-29 is the freedom from cracking agent, can be commercially available, for example the Okrein1900 of the too drastic limited-liability company of U.S.'s flare star production.
Among the present invention, the elastomeric ratio of natural rubber and diolefine can in very large range change, but when the elastomeric content of diolefine surpasses 30 weight parts, will reduce the mechanical property of rubber combination, the elastomeric content of diolefine will reduce the endurance quality of rubber combination, in 100 parts by weight of natural rubber and the diolefine synthetic rubber during less than 20 weight parts, the content of preferred natural rubber is the 70-80 weight part, and the elastomeric content of diolefine is the 20-30 weight part.
Described diolefine synthetic rubber is divinyl rubber and/or styrene-butadiene rubber(SBR); Be preferably styrene-butadiene rubber(SBR).
Described carbon black can be the various carbon blacks that are used for rubber combination, as the lining can be carbon black N550, N774 or N330, though the carbon black of various content all can be realized the present invention, but with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, when sooty content was lower than 10 weight parts, reinforcing effect was relatively poor; When sooty content surpasses 70 weight parts, then influence the dynamic property of rubber combination, therefore, preferred described sooty content is the 10-70 weight part, more preferably 20-60 weight part, more preferably 30-50 weight part.
Described vulcanizing agent can be the vulcanizing agent of various routines, for example can be in insoluble sulfur, dithio morphine quinoline and four sulfurations, the two morphine quinolines one or more, be preferably insoluble sulfur, described insoluble sulfur is the allotropic substance of sulphur, it is insoluble to sulfurous gas and other solvent, also be insoluble to rubber, rubber is effectively vulcanized.With respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of described vulcanizing agent is the 1-5 weight part, is preferably the 1-2.5 weight part.
Described promoting agent can for various routines promoting agent, for example can be zinc oxide and/or stearic acid, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of described promoting agent is the 2-10 weight part, be preferably the 4-8 weight part, more preferably the 5-7 weight part.
According to the present invention, can also contain softening agent in the rubber combination of the present invention, the adding of softening agent can improve the processing characteristics of rubber combination, described softening agent can be used for the softening agent of rubber combination for various routines, for example, can be paraffin oil and/or naphthenic oil, described paraffin oil is the mixture from the resulting colorless and odorless of crude oil fractionation, its main component is straight chain or branched paraffin, described paraffin oil can be commercially available, for example the paraffin oil KP300 that produces of No. 300 paraffin oils producing of Shanghai lubricating oil plant and Hebei Ke Yuan lubricant company limited, paraffin oil KP500, paraffin oil KP600.
Described naphthenic oil is for being the mixture of main component with naphthenic hydrocarbon, described naphthenic oil can be commercially available, for example the naphthenic oil of the naphthenic oil of the naphthenic oil of Dalian oil seven factories production, the production of Xiamen pterosaur petrochemical industry company limited and the production of Hebei Ke Yuan lubricant company limited.
In rubber combination, the content of described softening agent can in very large range change, among the present invention, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of described softening agent is preferably the 5-20 weight part, more preferably the 5-12 weight part.
Among the present invention, the preparation method of described rubber combination is with natural rubber, the diolefine synthetic rubber, the diolefine synthetic rubber, carbon black, promoting agent and anti-aging agent join in the Banbury mixer and mix, the blended time is 5-20 minute, temperature is 50-70 ℃, vulcanizing agent is joined in the mixed product then, in mill, mix, the blended time is 5-20 minute, temperature is 35-55 ℃, subsequently the product that obtains is carried out compression molding, the temperature of compression molding is 150-180 ℃, and the time of compression molding is 10-30 minute, thereby obtains rubber combination.
The present invention is further illustrated below by embodiment.
Embodiment 1
Present embodiment is used to illustrate rubber combination provided by the invention.
With 80 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 20 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 16 weight parts (Shanghai Cabot), the carbon black N774 of 26 weight parts (Shanghai Cabot), the stearic acid of 1 weight part (the polite chemical industry in Hong Kong company limited, SA1801), the zinc oxide of 5 weight parts (Liuzhou zinc product company limited), the N-(1 of 2 weight parts, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine (chemical plant, Nanjing produce 4020), the antioxidant BLE of 2 weight parts (production of Shanghai rubber ingredients factory), No. 70 Microcrystalline Waxes of 1 weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 2 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer, under 55 ℃ of conditions, mixed 10 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 1.5 weight part insoluble sulfurs then, S-80), under 40 ℃ of conditions, mixed 10 minutes, then the mixture that obtains is taken out, under 165 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 15 minutes, obtains thickness and be 2 millimeters rubber combination S1.
Embodiment 2
Present embodiment is used to illustrate rubber combination provided by the invention.
With 75 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 25 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 20 weight parts (Shanghai Cabot), the carbon black N774 of 30 weight parts (Shanghai Cabot), the stearic acid of 5 weight parts (the polite chemical industry in Hong Kong company limited, SA1801), the paraffin oil of 10 weight parts (No. 300 paraffin oils that Shanghai lubricating oil plant produces), the zinc oxide of 2 weight parts (Liuzhou zinc product company limited), N-cyclohexyl-N '-diphenyl-para-phenylene diamine of 4 weight parts (chemical plant, Nanjing produce 4010), the antioxidant BLE of 1 weight part (production of Shanghai rubber ingredients factory), 0.5 No. 80 Microcrystalline Waxes of weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 3 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer, under 60 ℃ of conditions, mixed 5 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 2.5 weight part insoluble sulfurs then, S-80), under 35 ℃ of conditions, mixed 15 minutes, then the mixture that obtains is taken out, under 170 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 10 minutes, obtains thickness and be 2 millimeters rubber combination S2.
Embodiment 3
Present embodiment is used to illustrate rubber combination provided by the invention.
With 70 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), divinyl rubber (the producer of 30 weight parts, the trade mark), the carbon black N550 of 30 weight parts (Shanghai Cabot), the zinc oxide of 7 weight parts (Liuzhou zinc product company limited), 15 weight parts naphthenic oil (oil seven factories in Dalian produce naphthenic oil), N-sec.-propyl-N '-diphenyl-para-phenylene diamine of 2 weight parts (4010NA that the chemical plant, Nanjing produces), the antioxidant BLE of 2 weight parts (production of Shanghai rubber ingredients factory), 1.5 No. 90 Microcrystalline Waxes of weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 1 weight part (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer, under 65 ℃ of conditions, mixed 7 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 1 weight part insoluble sulfur then, S-80), under 45 ℃ of conditions, mixed 8 minutes, then the mixture that obtains is taken out, under 160 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 12 minutes, obtains thickness and be 2 millimeters rubber combination S3.
Embodiment 4
Present embodiment is used to illustrate rubber combination provided by the invention.
With 80 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 20 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 15 weight parts (Shanghai Cabot), the carbon black N774 of 15 weight parts (Shanghai Cabot), the stearic acid of 6 weight parts (the polite chemical industry in Hong Kong company limited, SA1801), the N-(1 of 2 weight parts, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine (chemical plant, Nanjing produce 4020), the antioxidant BLE of 2 weight parts (production of Shanghai rubber ingredients factory), No. 70 Microcrystalline Waxes of 1 weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 2 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer and mixed 5 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 2.5 weight part insoluble sulfurs then, S-80) mixed 10 minutes, then the mixture that obtains is taken out, and under 165 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 15 minutes, obtains thickness and be 2 millimeters rubber combination S4.
Comparative Examples 1
With 80 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 20 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 15 weight parts (Shanghai Cabot), the carbon black N774 of 15 weight parts (Shanghai Cabot), the stearic acid of 6 weight parts (the polite chemical industry in Hong Kong company limited, SA1801), the antioxidant BLE of 2 weight parts (production of Shanghai rubber ingredients factory), No. 70 Microcrystalline Waxes of 1 weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 2 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer and mixed 5 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 2.5 weight part insoluble sulfurs then, S-80) mixed 10 minutes, then the mixture that obtains is taken out, and under 165 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 15 minutes, obtains thickness and be 2 millimeters reference rubber combination CS1.
Comparative Examples 2
With 80 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 20 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 15 weight parts (Shanghai Cabot), the carbon black N774 of 15 weight parts (Shanghai Cabot), the stearic acid of 6 weight parts (the polite chemical industry in Hong Kong company limited, SA1801), the N-(1 of 2 weight parts, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine (chemical plant, Nanjing produce 4020), No. 70 Microcrystalline Waxes of 1 weight part (the meticulous paraffin chemical industry in Nanyang), the Okrein1900 freedom from cracking agent of 2 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer and mixed 5 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 2.5 weight part insoluble sulfurs then, S-80) mixed 10 minutes, then the mixture that obtains is taken out, and under 165 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 15 minutes, obtains thickness and be 2 millimeters reference rubber combination CS2.
Comparative Examples 3
With 80 parts by weight of natural rubber (No. 3 smoked sheets of Thailand), the styrene-butadiene rubber(SBR) of 20 weight parts (Dushanzi petro-chemical corporation of CNPC, BR9000), the carbon black N550 of 15 weight parts (Shanghai Cabot), the carbon black N774 of 15 weight parts (Shanghai Cabot), the stearic acid of 6 weight parts (the polite chemical industry in Hong Kong company limited, SA1801), the N-(1 of 2 weight parts, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine (chemical plant, Nanjing produce 4020), the antioxidant BLE of 2 weight parts (production of Shanghai rubber ingredients factory), the Okrein1900 freedom from cracking agent of 2 weight parts (U.S. flare star Internaional, Inc) joins in 0.5 liter of Banbury mixer and mixed 5 minutes, (Science and Technology Ltd. is contained in the Jinchang, Guangzhou to add 2.5 weight part insoluble sulfurs then, S-80) mixed 10 minutes, then the mixture that obtains is taken out, and under 165 ℃ of conditions, in 50T vulcanizing press (Chengdu Hangfa Hydraulic Construction Co., Ltd.), carry out compression molding, curing time is 15 minutes, obtains thickness and be 2 millimeters reference rubber combination CS3.
Embodiment 5-8
The rubber combination S1-S4 that embodiment 1-4 is obtained carries out tensile property detection and ozone resistance detection in accordance with the following methods:
Tensile property detects
According to the 1 type dumbbell shaped cut-off knife of stipulating among the GB/T528-92 rubber combination S1-S4 being cut into the dumbbell shaped standard film, is 25 ℃ at probe temperature, and pulling speed is under the condition of 500 mm/min, test tensile strength and tensile yield, and the result is as shown in table 1.
Ozone resistance detects
According to the regulation of GB7762-87, under the state of 40% haulage, be 50pphm with rubber combination S1-S4 at ozone concn, temperature is to place 96 hours continuously in 40 ℃ the environment, observes the cracking state, the result is as shown in table 1.
Comparative Examples 4-6
The reference rubber combination CS1-CS3 that Comparative Examples 1-3 is obtained carries out tensile property detection and ozone resistance detection according to the described method of embodiment 5-8, and the result is as shown in table 1.
Table 1
| The embodiment numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 |
| Composition no | S1 | S2 | S3 | S4 | CS1 | CS2 | CS3 |
| Tensile strength (MPa) | 18.7 | 18.4 | 18.3 | 18.9 | 17.9 | 18.5 | 18.2 |
| Tensile yield (%) | 620 | 610 | 600 | 630 | 610 | 620 | 620 |
| Ozone resistance | There is not be full of cracks | There is not be full of cracks | There is not be full of cracks | There is not be full of cracks | Slight be full of cracks | Significantly be full of cracks | Significantly be full of cracks |
As can be seen from Table 1, the rubber combination S1-S4 of embodiment of the invention 1-4 preparation compares with the reference rubber combination CS1-CS3 of Comparative Examples 1-3 preparation, at ozone concn is crack performance all not occur after 50pphm, temperature are to place 96 hours continuously in 40 ℃ the environment, the ozone resistance that rubber combination S1-S4 is described significantly improves, tensile strength reaches more than 18.3 MPas simultaneously, and tensile yield reaches more than 600%.Illustrate that rubber combination provided by the invention has good ozone resistance, also have good tensile simultaneously.
Claims (10)
1. rubber combination, said composition contains natural rubber, the diolefine synthetic rubber, carbon black, vulcanizing agent, promoting agent and anti-aging agent, it is characterized in that, described anti-aging agent is the Ursol D anti-aging agent, acetone and diphenylamine reaction thing, Microcrystalline Wax and carbonatoms are the normal paraffin mixture of 23-29, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of Ursol D anti-aging agent is the 1-6 weight part, and the content of acetone and diphenylamine reaction thing is the 1-4 weight part, the content of Microcrystalline Wax is the 0.5-2.2 weight part, carbonatoms is that the content of the normal paraffin mixture of 23-29 is the 0.5-5 weight part.
2. composition according to claim 1, wherein, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of Ursol D anti-aging agent is the 1-4 weight part, and the content of acetone and diphenylamine reaction thing is that the content of 1-2 weight part, Microcrystalline Wax is that 0.5-1.5 weight part, carbonatoms are that the content of the normal paraffin mixture of 23-29 is the 1-3 weight part.
3. composition according to claim 1 and 2, wherein, described Ursol D anti-aging agent is N-(1, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine, N, in N '-two (1,4-dimethyl amyl group) Ursol D, N-cyclohexyl-N '-diphenyl-para-phenylene diamine and N-sec.-propyl-N '-diphenyl-para-phenylene diamine one or more.
4. composition according to claim 1, wherein, described Microcrystalline Wax is that fusing point is 70-90 ℃.
5. composition according to claim 1, wherein, described Ursol D anti-aging agent is N-(1, the 3-dimethylbutyl)-N '-diphenyl-para-phenylene diamine.
6. composition according to claim 1, wherein, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, described sooty content is the 10-70 weight part, and the content of described vulcanizing agent is that the content of 1-5 weight part, described promoting agent is the 2-10 weight part.
7. according to claim 1 or 6 described compositions, wherein, in 100 parts by weight of natural rubber and the diolefine synthetic rubber, the content of described natural rubber is the 70-80 weight part, and the elastomeric content of described diolefine is the 20-30 weight part.
8. composition according to claim 1, wherein, described diolefine synthetic rubber is divinyl rubber and/or styrene-butadiene rubber(SBR); Described vulcanizing agent is insoluble sulfur and/or dithio morphine quinoline; Described promoting agent is zinc oxide and/or stearic acid.
9. composition according to claim 1, wherein, described composition also contains softening agent, and described softening agent is paraffin oil and/or naphthenic oil.
10. composition according to claim 9, wherein, with respect to 100 parts by weight of natural rubber and diolefine synthetic rubber, the content of described softening agent is the 5-20 weight part.
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| CN2007101060885A CN101314651B (en) | 2007-05-31 | 2007-05-31 | Ozone resistant rubber composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102030927A (en) * | 2010-12-10 | 2011-04-27 | 青岛四方车辆研究所有限公司 | Elastic node rubber product for locomotive vehicle |
| CN105542245A (en) * | 2016-01-22 | 2016-05-04 | 上海京海（安徽）化工有限公司 | High-performance rubber produced through rubber refining of high-thermal-stability insoluble sulfur and preparation method |
| US20200148861A1 (en) * | 2017-04-25 | 2020-05-14 | Sumitomo Rubber Industries, Ltd. | Rubber composition |
| DE102017216070A1 (en) * | 2017-09-12 | 2019-03-14 | Tesa Se | Sealing tape for bodies |
| CN110577676A (en) * | 2019-10-12 | 2019-12-17 | 芜湖集拓实心胎有限公司 | Engineering solid tire capable of resisting 50pphm ozone |
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|---|---|---|---|---|
| CN1142515A (en) * | 1995-08-04 | 1997-02-12 | 山东省宁阳县化肥厂 | Anti-ageing agent for composite rubber and preparation thereof |
| CN1362453A (en) * | 2001-01-05 | 2002-08-07 | 中国石油化工股份有限公司 | Rubber protecting wax |
| CN1760278A (en) * | 2004-10-12 | 2006-04-19 | 中国石油天然气股份有限公司 | Wax-for preventing rubber |
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- 2007-05-31 CN CN2007101060885A patent/CN101314651B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142515A (en) * | 1995-08-04 | 1997-02-12 | 山东省宁阳县化肥厂 | Anti-ageing agent for composite rubber and preparation thereof |
| CN1362453A (en) * | 2001-01-05 | 2002-08-07 | 中国石油化工股份有限公司 | Rubber protecting wax |
| CN1760278A (en) * | 2004-10-12 | 2006-04-19 | 中国石油天然气股份有限公司 | Wax-for preventing rubber |
Non-Patent Citations (1)
| Title |
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| JP特开2005-248155A 2005.09.15 |
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