CN112852027B - Rubber composition, preparation method of rubber and hourglass spring - Google Patents
Rubber composition, preparation method of rubber and hourglass spring Download PDFInfo
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Abstract
The disclosure relates to a rubber composition, a preparation method of the rubber and an hourglass spring, wherein 100 parts by weight of a rubber main material is taken as a reference, the rubber composition further comprises 10-20 parts by weight of a reinforcing agent, 20-30 parts by weight of a plasticizer, 4-10 parts by weight of an anti-aging agent, 7-13 parts by weight of an active agent, 1.5-4.5 parts by weight of a vulcanizing agent, 3-8 parts by weight of an accelerator, 1-2 parts by weight of an anti-reversion agent and 10-15 parts by weight of a heat stabilizer; the plasticizer comprises bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane; the heat stabilizer comprises one or more of isooctyl dibutyl tin dithioacetate, diisooctyl 2,2- [ (dimethyl stannous) bis (sulfo) ] diacetate and dibutyl tin dilaurate. The rubber prepared from the rubber composition of the present disclosure has good fatigue properties.
Description
Technical Field
The disclosure relates to the field of chemical industry, in particular to a rubber composition, a preparation method of rubber and an hourglass spring.
Background
The hourglass reed raw rubber which is mainstream at present is made of natural rubber (including smoked sheet rubber, standard rubber and the like), isoprene rubber and a combination thereof; in order to improve the plasticity of rubber, paraffin oil, naphthenic oil, aromatic oil or ester plasticizer is commonly used at present and is used as the rubber plasticizer, but the viscosity fluctuation of the paraffin oil is large, the influence of the processing technology on the dispersion and plasticization effect of the paraffin oil is large, and the large difference of the Mooney viscosity and the hardness of rubber mixtures of different batches is caused. Meanwhile, rubber generates heat in the fatigue process, and the addition of plasticizers such as paraffin oil and the like can increase the heat generation of rubber materials in a fatigue test, so that molecular chains of the rubber are broken under the condition of thermal aging, and the product is not beneficial to maintaining stable static rigidity and excellent fatigue performance.
Disclosure of Invention
The invention aims to overcome the problem of poor fatigue performance of the conventional rubber, and provides a rubber composition, a preparation method of the rubber and an hourglass spring.
In order to achieve the above object, a first aspect of the present disclosure provides a rubber composition, including a rubber main material, and based on 100 parts by weight of the rubber main material, the rubber composition further includes 10 to 20 parts by weight of a reinforcing agent, 20 to 30 parts by weight of a plasticizer, 4 to 10 parts by weight of an anti-aging agent, 7 to 13 parts by weight of an activator, 1.5 to 4.5 parts by weight of a vulcanizing agent, 3 to 8 parts by weight of an accelerator, 1 to 2 parts by weight of an anti-reversion agent, and 10 to 15 parts by weight of a heat stabilizer;
the plasticizer comprises bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane; the heat stabilizer comprises one or more of isooctyl dibutyl tin dithioacetate, diisooctyl 2,2- [ (dimethyl stannous) bis (sulfo) ] diacetate and dibutyl tin dilaurate.
Optionally, the rubber composition further includes 13 to 18 parts by weight of the reinforcing agent, 20 to 25 parts by weight of the plasticizer, 4 to 8 parts by weight of the anti-aging agent, 7 to 10 parts by weight of the activator, 2 to 4 parts by weight of the vulcanizing agent, 3 to 6 parts by weight of the accelerator, 1 to 2 parts by weight of the anti-reversion agent and 10 to 12 parts by weight of the heat stabilizer, based on 100 parts by weight of the main rubber material.
Optionally, the content of the heat stabilizer and the plasticizer is in a weight ratio of 1: (1.5-2.5).
Optionally, the weight ratio of the contents of the bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and the gamma-mercaptopropyltriethoxysilane is (1-2): (0-1.5).
Optionally, the rubber main material comprises one or more of natural rubber, isoprene rubber, modified natural rubber and modified isoprene rubber;
the reinforcing agent comprises one or more of carbon black, white carbon black, calcium carbonate, argil, talcum powder and diatomite;
the anti-aging agent comprises one or more of N-isopropyl-N' -phenyl-p-phenylenediamine, paraffin, microcrystalline wax and gamma-mercaptopropyltriethoxysilane;
the active agent comprises one or more of zinc oxide, zinc carbonate, zinc stearate, stearic acid, sodium stearate and potassium stearate;
the vulcanizing agent comprises one or more of sulfur, 4-4' -dimorpholinyl disulfide, tetramethyl thiuram disulfide, dipentamethylene thiuram tetrasulfide and disulfide dichloride;
the accelerator comprises one or more of N-cyclohexyl-2-benzothiazole sulfonamide, 2-thiol benzothiazole, 2' -dithio dibenzothiazole, N-tertiary butyl-2-benzothiazole sulfonamide, tetraethyl thiuram disulfide and zinc dibutyl dithiocarbamate;
the anti-reversion agent comprises one or more of 1, 6-bis (N-N '-dibenzothiazyl carbamyl disulfide) -hexane, 1, 3-bis (citraconimidomethyl) benzene and S, S' -1, 6-hexanediol thiosulfate disodium salt.
Optionally, the rubber main material further comprises one or more of ethylene propylene diene monomer, nitrile rubber, styrene butadiene rubber and butadiene rubber.
Optionally, the anti-reversion agent is the 1, 6-bis (N-N' -dibenzothiazyl carbamoyldisulfide) -hexane.
A second aspect of the present disclosure provides a method of preparing a rubber, the method comprising: the rubber composition provided by the first aspect of the present disclosure is subjected to open mixing, kneading and vulcanization in this order.
A third aspect of the present disclosure provides a rubber prepared by the method provided by the second aspect of the present disclosure.
A fourth aspect of the present disclosure provides an hourglass spring comprising the rubber provided in the third aspect of the present disclosure.
The inventors of the present disclosure have found that when a mixture of bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane is used as a plasticizer for a rubber composition and the amount thereof is limited within a specific range, it is advantageous to ensure the stability of hardness and Mooney viscosity of the rubber compound. The reason is that the molecular weight of the bis- [ gamma- (triethoxy silicon) propyl ] tetrasulfide and the gamma-mercaptopropyltriethoxysilane is small, the chemical components are single, and the speed increasing effect on the sizing material is stable. Meanwhile, a heat stabilizer containing tin is added into the rubber composition, and the tin in the heat stabilizer can promote the reaction of active sulfur in the plasticizer, increase the crosslinking degree of each component in the rubber composition, reduce the vulcanization reversion of the rubber, alleviate the problem of the reduction of the rubber performance caused by the chain breakage of rubber polysulfide bonds in the use process to a certain extent, and enhance the fatigue performance of the rubber.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a curve of a vulcanization test of rubbers prepared in example 1 and comparative example 1 of the present disclosure.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The first aspect of the disclosure provides a rubber composition, which comprises a rubber main material, and based on 100 parts by weight of the rubber main material, the rubber composition further comprises 10-20 parts by weight of a reinforcing agent, 20-30 parts by weight of a plasticizer, 4-10 parts by weight of an anti-aging agent, 7-13 parts by weight of an activator, 1.5-4.5 parts by weight of a vulcanizing agent, 3-8 parts by weight of an accelerator, 1-2 parts by weight of an anti-reversion agent and 10-15 parts by weight of a heat stabilizer; the plasticizer comprises bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane; the heat stabilizer comprises one or more of isooctyl dibutyl tin dithioacetate, diisooctyl 2,2- [ (dimethyl stannous) bis (sulfo) ] diacetate and dibutyl tin dilaurate.
The common plasticizers are paraffin oil, naphthenic oil, aromatic oil and the like, and the molecular weight of the plasticizers is large, so that the lubricants among rubber molecules are not obvious enough. And the plasticizer does not help the physical mechanical property and the fatigue resistance of the rubber, and can only be used for adjusting the hardness and the processability of the rubber. The rubber composition disclosed by the invention contains the specific types of plasticizers and heat stabilizers, and in the process of preparing rubber from the rubber composition, the tin salt of the heat stabilizer can promote the active sulfur in the plasticizer to react, so that the polysulfide bonds in the plasticizer are subjected to vulcanization reaction to generate monosulfur bonds, the stability of the crosslinking bonds is improved, the crosslinking degree of the components in the rubber composition is increased, and the fatigue performance of the rubber can be effectively improved. Meanwhile, the viscosity and the basic hardness of the rubber can be adjusted by the bis- [ gamma- (triethoxy silicon) propyl ] tetrasulfide and the gamma-mercaptopropyltriethoxysilane in the rubber composition, the molecular weight and the content of the bis- [ gamma- (triethoxy silicon) propyl ] tetrasulfide and the gamma-mercaptopropyltriethoxysilane are small, the sliding resistance among rubber molecules and the molecular chain fracture can be reduced, the dynamic heat generation and the abrasion performance of a rubber compound can be improved, and the fatigue performance of the rubber can be further improved. The rubber composition of the present disclosure is particularly suitable for use as a rubber composition for hourglass springs.
According to the disclosure, the rubber composition may further include 13 to 18 parts by weight of a reinforcing agent, 20 to 25 parts by weight of a plasticizer, 4 to 8 parts by weight of an antioxidant, 7 to 10 parts by weight of an activator, 2 to 4 parts by weight of a vulcanizing agent, 3 to 6 parts by weight of an accelerator, 1 to 2 parts by weight of an anti-reversion agent and 10 to 12 parts by weight of a heat stabilizer, based on 100 parts by weight of the rubber main material. Within the above range, the rubber composition has more excellent fatigue properties
According to the present disclosure, the weight ratio of the content of the heat stabilizer to the plasticizer may vary within a wide range, and preferably, the weight ratio of the content of the heat stabilizer to the plasticizer may be 1: (1.5-3), more preferably 1: (1.5-2.5), more preferably 1: (1.8-2.2). Within the range, the weight ratio of the content of the heat stabilizer to the content of the plasticizer is proper, and the heat stabilizer and the plasticizer can fully react in the process of preparing the rubber, so that the prepared rubber has better fatigue performance.
In one embodiment, the rubber composition may contain bis- [ γ - (triethoxysilyl) propyl ] tetrasulfide and γ -mercaptopropyltriethoxysilane in a weight ratio of (1-2): (0-1.5), preferably (1.5-2): (0-1.5), more preferably (1.8-2): (1-1.2). Within the above ratio range, the rubber obtained from the rubber composition has more excellent fatigue properties.
According to the disclosure, the rubber composition may be composed of 100 parts by weight of a rubber main material, 10-20 parts by weight of a reinforcing agent, 20-30 parts by weight of a plasticizer, 4-10 parts by weight of an anti-aging agent, 7-13 parts by weight of an activator, 1.5-4.5 parts by weight of a vulcanizing agent, 3-8 parts by weight of an accelerator, 1-2 parts by weight of an anti-reversion agent and 10-15 parts by weight of a heat stabilizer, based on 100 parts by weight of the rubber main material.
According to the disclosure, the rubber composition may be composed of 100 parts by weight of a rubber main material, 13-18 parts by weight of a reinforcing agent, 20-25 parts by weight of a plasticizer, 4-8 parts by weight of an anti-aging agent, 7-10 parts by weight of an activator, 2-4 parts by weight of a vulcanizing agent, 3-6 parts by weight of an accelerator, 1-2 parts by weight of an anti-reversion agent and 10-12 parts by weight of a heat stabilizer, based on 100 parts by weight of the rubber main material.
The rubber base material may be well known to those skilled in the art in light of this disclosure. In a specific embodiment, the rubber main material comprises one or more of natural rubber, isoprene rubber, modified natural rubber and modified isoprene rubber.
In another preferred embodiment, the rubber main material may be a mixture of a first rubber material and a second rubber material, wherein the first rubber material may include one or more of natural rubber (i.e. isoprene rubber), isoprene rubber, modified natural rubber and modified isoprene rubber, and the second rubber material may include one or more of ethylene propylene diene monomer, nitrile butadiene rubber, styrene butadiene rubber and butadiene rubber. Among them, modified natural rubber is conventionally used by those skilled in the art, such as Epoxidized Natural Rubber (ENR), Chlorinated Natural Rubber (CNR), graft natural rubber, cyclized natural rubber, thermoplastic modified natural rubber, hydrogenated natural rubber.
Reinforcing agents, antioxidants, activators, vulcanizing agents, accelerators are well known to those skilled in the art in light of this disclosure. For example, the reinforcing agent may include one or more of carbon black, white carbon, calcium carbonate, china clay, talc and diatomaceous earth. The anti-aging agent can comprise one or more of N-isopropyl-N' -phenyl-p-phenylenediamine (NA4010), paraffin, microcrystalline wax and gamma-mercaptopropyltriethoxysilane. The active agent may be an inorganic active agent and/or an organic active agent. The types of the inorganic active agent and the organic active agent are not limited, for example, the inorganic active agent may include zinc oxide and zinc carbonate, and the organic active agent may include one or more of stearic acid, zinc stearate (also referred to as zinc stearate, zinc stearate (light), zinc stearate, zinc lipoate, CAS No. 557-05-1), sodium stearate (also referred to as sodium stearate, CAS No. 822-16-2), and potassium stearate (also referred to as potassium stearate, CAS No. 593-29-3). The vulcanizing agent can comprise one or more of sulfur, 4-4' -dimorpholinyl disulfide, tetramethylthiuram disulfide, dipentamethylenethiuram tetrasulfide and disulfide dichloride. The accelerator may include one or more of N-cyclohexyl-2-benzothiazolesulfenamide, 2-mercaptobenzothiazole, 2' -dithiodibenzothiazole, N-tert-butyl-2-benzothiazolesulfenamide, tetraethylthiuram disulfide and zinc dibutyldithiocarbamate.
In accordance with the present disclosure, the anti-reversion agent may comprise one or more of 1, 6-bis (N-N '-dibenzothiazyl carbamoyldithio) -hexane (under the designation KA 9188), 1, 3-bis (citraconimidomethyl) benzene (under the designation Perkalink900), and the disodium salt of S, S' -1, 6-hexanediol thiosulfate (under the designation HTS). Preferably, the anti-reversion agent may be 1, 6-bis (N-N' -dibenzothiazyl carbamoyldisulfide) -hexane. The plasticizer and the 1, 6-bis (N-N' -dibenzothiazyl carbamyl disulfide) -hexane both contain-S-S-chemical bonds, and have synergistic effect, so that effective sulfur can be released in the vulcanization process of the rubber composition, and the-S-S-chemical bonds can generate monosulfur bonds when the polysulfide bonds are subjected to vulcanization reversion at high temperature, thereby effectively relieving the performance reduction of the rubber material caused by the vulcanization reversion. In addition, the content of the plasticizer and the anti-reversion agent is higher, so that the consumption of sulfur can be reduced, a vulcanization system is changed into a semi-effective vulcanization system, the generation of a sulfur bond in the system is increased, and the heat resistance and the good compression permanent deformation of the rubber are ensured.
A second aspect of the present disclosure provides a method of preparing a rubber, the method comprising: the rubber composition provided by the first aspect of the present disclosure is masticated, compounded, and vulcanized in that order. Mastication, mixing and vulcanization are well known to those skilled in the art and can be carried out, for example, according to the compounding, mixing and vulcanization equipment and operating procedures of rubber test compounds of GB/T6038-2006 and GB/T6038-2006.
In a preferred embodiment, 100 parts by weight of rubber main material is placed in an internal mixer to be mixed for 5-10min at 65-100 ℃ to obtain rubber A; mixing 100 parts by weight of rubber compound A, 10-20 parts by weight of reinforcing agent, 20-30 parts by weight of bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane, 4-10 parts by weight of anti-aging agent, 7-13 parts by weight of active agent, 10-15 parts by weight of isooctyl dithioacetate dibutyltin and 1-2 parts by weight of anti-vulcanization reversion agent, placing the mixture in an internal mixer, mixing for 8-12min at 85-130 ℃, thinly passing the mixture through an open mill for 3-5 times, discharging the mixture, and cooling the mixture to room temperature to obtain rubber compound B; placing the rubber compound B, 1.5-4.5 parts by weight of vulcanizing agent and 3-8 parts by weight of accelerator into an internal mixer, mixing for 120-240s at 50-85 ℃, and discharging the mixture into a required shape after passing through an open mill to obtain rubber compound C; and placing the rubber compound C in a flat vulcanizing machine, and carrying out vulcanization reaction for 2-4 hours at the temperature of 140-160 ℃ to obtain the rubber.
A third aspect of the present disclosure provides a rubber prepared by the method provided by the second aspect of the present disclosure.
The fourth aspect of the present disclosure provides an hourglass spring comprising the rubber provided in the third aspect of the present disclosure, which has good fatigue properties.
The present disclosure is further illustrated by the following examples, but is not to be construed as being limited thereby.
Bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide, gamma-mercaptopropyltriethoxysilane, isooctyl dithioacetate, dibutyltin dithioacetate, carbon black, activated zinc oxide, stearic acid, microcrystalline wax, N-isopropyl-N '-phenyl-p-phenylenediamine, Guangdong chemical Co., Ltd., 1, 6-bis (N-N' -dibenzothiazyl disulfide) -hexane, sulfur, and N-cyclohexyl-2-benzothiazylsulfenamide of comparative examples and examples were obtained from Ningbo This Polymer Co., Ltd, 2-Thiobenzothiazole is available from Nippon This polymers, Inc., and 2,2' -dithiodibenzothiazole is available from Nippon This polymers, Inc.
Example 1
Placing 100 parts by weight of isoprene rubber into an internal mixer, and mixing for 10min at 90 ℃ to obtain rubber A;
100 parts by weight of rubber compound A and 15 parts by weight of carbon black, 24 parts by weight of bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane (the weight ratio of bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide to gamma-mercaptopropyltriethoxysilane is 1: 1), 6 parts by weight of N-isopropyl-N ' -phenyl-p-phenylenediamine and paraffin (the weight ratio of N-isopropyl-N ' -phenyl-p-phenylenediamine and paraffin is 1: 1), 10 parts by weight of zinc oxide and stearic acid (the weight ratio of zinc oxide to stearic acid is 1: 1), 12 parts by weight of isooctyl dibutyldithioacetate, 1.5 parts by weight of 1, 6-bis (N-N ' -dibenzothiazyl disulfide) -hexane were mixed and placed in an internal mixer to be mixed for 2min at 130 ℃, thinly passing through an open mill for 3 times, then discharging the sheet, and cooling to room temperature to obtain rubber compound B;
placing the rubber compound B, 3 parts by weight of sulfur and 6 parts by weight of N-cyclohexyl-2-benzothiazole sulfonamide into an internal mixer, mixing for 240s at 50-85 ℃, and discharging the mixture into a required shape after passing through an open mill to obtain rubber compound C;
placing the rubber compound C in a flat vulcanizing machine 200T, and carrying out vulcanization reaction for 480s at 160 ℃ to obtain the rubber.
Examples 2 to 9
Rubbers were prepared according to the procedure of example 1 and the raw material ratios in tables 1 to 3.
Comparative examples 1 to 5
Rubbers were prepared according to the procedure of example 1 and the raw material ratios in tables 4-5.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
TABLE 5
Test example
(1) Fatigue test
The rubbers prepared in the examples and comparative examples were formed into hourglass spring products at 115 ℃ 5H and tested for fatigue performance under the following test conditions: the hourglass spring is cooled in the experimental process, and the temperature is guaranteed to be within 40 ℃. The protocol of the test was: preloading 30KN, loading 30 +/-15 KN and frequency 1Hz, and requiring no cracks on the rubber.
(2) Degree of compression set
The rubbers prepared in the examples and comparative examples were tested for their degree of compression set according to the standard of GB/T7759-.
(3) Vulcanization test
The rubbers prepared in example 1 and comparative example 1 were subjected to a vulcanization test using a rotorless vulcameter for determining the vulcanization characteristics in accordance with GB/T16584-.
TABLE 6
As can be seen from fig. 1 and table 6, the rubber composition of the present disclosure has more active sulfur, better crosslinking degree of the rubber material, relatively higher torque of the rubber, smaller compression set degree, and flatter vulcanization rear section, so that the stability of the rubber performance of the rubber under long-time vulcanization can be ensured. The rubber prepared from the rubber composition disclosed by the invention also has good fatigue performance.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The rubber composition comprises a rubber main material and is characterized by further comprising 10-20 parts by weight of a reinforcing agent, 20-30 parts by weight of a plasticizer, 4-10 parts by weight of an anti-aging agent, 7-13 parts by weight of an active agent, 1.5-4.5 parts by weight of a vulcanizing agent, 3-8 parts by weight of an accelerator, 1-2 parts by weight of an anti-reversion agent and 10-15 parts by weight of a heat stabilizer, wherein 100 parts by weight of the rubber main material is taken as a reference;
the plasticizer comprises bis- [ gamma- (triethoxysilyl) propyl ] tetrasulfide and gamma-mercaptopropyltriethoxysilane; the heat stabilizer comprises one or more of isooctyl dibutyl tin dithioacetate, diisooctyl 2,2- [ (dimethyl stannous) bis (sulfo) ] diacetate and dibutyl tin dilaurate.
2. The rubber composition of claim 1, further comprising 13-18 parts by weight of the reinforcing agent, 20-25 parts by weight of the plasticizer, 4-8 parts by weight of the antioxidant, 7-10 parts by weight of the active agent, 2-4 parts by weight of the vulcanizing agent, 3-6 parts by weight of the accelerator, 1-2 parts by weight of the anti-reversion agent and 10-12 parts by weight of the heat stabilizer, based on 100 parts by weight of the main rubber material.
3. The rubber composition according to claim 1, wherein the content ratio by weight of the heat stabilizer to the plasticizer is 1: (1.5-2.5).
4. The rubber composition according to claim 1, wherein the bis- [ γ - (triethoxysilyl) propyl ] tetrasulfide and the γ -mercaptopropyltriethoxysilane are contained in a weight ratio of (1-2): (0-1.5).
5. The rubber composition according to claim 1, wherein the rubber main material comprises one or more of natural rubber, isoprene rubber, modified natural rubber and modified isoprene rubber;
the reinforcing agent comprises one or more of carbon black, white carbon black, calcium carbonate, argil, talcum powder and diatomite;
the anti-aging agent comprises one or more of N-isopropyl-N' -phenyl-p-phenylenediamine, paraffin and microcrystalline wax;
the active agent comprises one or more of zinc oxide, zinc carbonate, zinc stearate, stearic acid, sodium stearate and potassium stearate;
the vulcanizing agent comprises one or more of sulfur, 4' -dimorpholinyl disulfide and disulfide dichloride;
the accelerator comprises one or more of N-cyclohexyl-2-benzothiazole sulfonamide, 2-thiol benzothiazole, 2' -dithio dibenzothiazole, N-tertiary butyl-2-benzothiazole sulfonamide, tetraethyl thiuram disulfide and zinc dibutyl dithiocarbamate;
the anti-reversion agent comprises one or more of 1, 6-bis (N, N '-dibenzothiazyl carbamyl disulfide) -hexane, 1, 3-bis (citraconimidomethyl) benzene and S, S' -1, 6-hexanediol thiosulfate disodium salt.
6. The rubber composition of claim 5, wherein the rubber main material further comprises one or more of ethylene propylene diene monomer, nitrile rubber, styrene butadiene rubber and butadiene rubber.
7. The rubber composition of claim 5, wherein the anti-reversion agent is the 1, 6-bis (N, N' -dibenzothiazyl carbamoyldisulfide) -hexane.
8. A method of preparing rubber, the method comprising: the rubber composition according to any one of claims 1 to 7, which is masticated, compounded and vulcanized in this order.
9. The rubber produced by the process of claim 8.
10. An hourglass spring, characterized in that it comprises the rubber of claim 9.
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| CN106947124A (en) * | 2017-04-21 | 2017-07-14 | 中国化工集团曙光橡胶工业研究设计院有限公司 | A kind of good and wear-resisting meridian aviation tyre tread rubber sizing material of belt cutting-resisting property |
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| CN101543325A (en) * | 2009-04-14 | 2009-09-30 | 泰亚(泉州)鞋业有限公司 | Anti-crocking rubber sole |
| KR20120077465A (en) * | 2010-12-30 | 2012-07-10 | 제일모직주식회사 | Glass fiber reinforced thermoplastic alloy resin composition and molded product using the same |
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| CN105713246A (en) * | 2016-04-25 | 2016-06-29 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Heat-conducting high-heat-conductivity aircraft tire tread rubber |
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