CN114163739A - Ageing-resistant and high-low temperature-resistant rubber gasket material and preparation method thereof - Google Patents
Ageing-resistant and high-low temperature-resistant rubber gasket material and preparation method thereof Download PDFInfo
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- CN114163739A CN114163739A CN202111427870.3A CN202111427870A CN114163739A CN 114163739 A CN114163739 A CN 114163739A CN 202111427870 A CN202111427870 A CN 202111427870A CN 114163739 A CN114163739 A CN 114163739A
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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Abstract
The invention provides an anti-aging high-low temperature resistant rubber gasket material which is prepared from the following raw materials: 100 parts of VNB type ethylene propylene diene monomer rubber, 30-80 parts of inorganic reinforcing filler, 25-45 parts of carbon black, 5-25 parts of softener, 5-20 parts of metal oxide, 1-3 parts of 2-mercaptobenzimidazole, 2-5 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 2-4 parts of processing aid, 1-4 parts of coupling agent, 2-5 parts of vulcanizing agent and 0.5-2 parts of co-vulcanizing agent. The preparation method of the invention prepares the rubber pad product with aging resistance and high and low temperature resistance by a plurality of times of mixing, the temperature tolerance interval of the product is-57 ℃ to 180 ℃, and the service life of the product is as long as 60 years. The material of the invention not only has good aging resistance and high and low temperature resistance, but also has the physical and mechanical properties required by the use of the rubber base plate, thereby ensuring that the rubber base plate has long service life in special environment and reducing the frequent replacement of the rubber base plate in the use process.
Description
Technical Field
The invention relates to the field of rubber, in particular to an anti-aging high-low temperature resistant rubber gasket material and a preparation method thereof.
Background
With the increasing demand of people on the running speed of trains, the rubber base plate plays an extremely important role in a track vibration reduction system in order to reduce vibration and noise. The rail is used as an important component in a track structure, and has the functions of elastically combining the steel rail and the sleeper, buffering vibration and impact generated when a vehicle passes through the rail, protecting a roadbed and the sleeper and improving the running stability and comfort of the vehicle. Because the common rubber material is easy to age in the high-temperature environment of a low-latitude area and easy to crack in a high-latitude area, the common rubber material is usually replaced once in 3-5 years in order to meet the optimal use effect, and the loss of manpower, materials, transport capacity and the like in the replacement process is huge.
At present, natural rubber or/and styrene butadiene rubber are used as rubber gasket materials, and the rubber is easy to age in the using process, short in service life and required to be frequently replaced. After the rubber is used for a long time at a high temperature, the hardness and the fixed extension of the material are increased, so that the rigidity of the rubber base plate is increased, the elasticity of the material is reduced at a low temperature, the rigidity of the rubber base plate is increased, the rubber base plate is easy to crack in an extremely cold condition, and the use performance of the rubber base plate is affected. Therefore, aiming at the practical problems of the use of rubber base plates at home and abroad, the invention of an excellent anti-aging and high and low temperature resistant rubber material for producing the rubber base plates to meet the requirements of railway construction in special areas is very necessary.
Disclosure of Invention
The rubber gasket plate material is prepared by taking VNB type ethylene propylene diene monomer as a main component, expanding the temperature tolerance area of the rubber gasket plate to a range from-57 ℃ to 180 ℃ through a special aging-resistant formula and process design of the material, and achieving the purposes of slowing down the aging rate, prolonging the service life and ensuring the performance of high and low temperature working conditions.
The specific scheme is as follows, the aging-resistant and high-low temperature-resistant rubber gasket material is prepared from the following raw materials in parts by weight:
100 parts of VNB type ethylene propylene diene monomer; 30-80 parts of an inorganic reinforcing filler; 25-45 parts of carbon black; 5-25 parts of a softener; 5-20 parts of metal oxide; 1-3 parts of 2-mercaptobenzimidazole; 2-5 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine; 1-4 parts of a coupling agent; 2-4 parts of a processing aid; 2-5 parts of a vulcanizing agent; 0.5-2 parts of auxiliary vulcanizing agent;
the temperature tolerance interval of the rubber gasket material is-50 ℃ to 180 ℃.
According to the rubber gasket material with ageing resistance and high and low temperature resistance, the VNB type ethylene propylene diene monomer rubber comprises ethylene propylene diene monomer rubber with high, medium and low content of VNB (5-vinyl-2-norbornene).
In the aging-resistant and high-low temperature-resistant rubber gasket material, the inorganic reinforcing filler is selected from one or more of modified pottery clay, white carbon black and modified kaolin; the content is preferably 50 to 70 parts.
The carbon black is selected from one or more of N330, N375, N660 and N550, and the content is preferably 35-45 parts.
The rubber gasket material is resistant to aging and high and low temperature, the softener is one or more selected from paraffin oil and liquid rubber, and the content is preferably 10-20 parts.
The rubber gasket plate material with aging resistance and high and low temperature resistance is characterized in that the metal oxide is selected from one or more of zinc oxide, magnesium oxide, iron oxide and tin oxide; preferably, the metal oxide is zinc oxide and magnesium oxide, and the content is preferably 10-20 parts.
The rubber gasket material is resistant to aging and high and low temperature, and the coupling agent is one or more selected from vinyl silane coupling agent, chlorohydrocarbon silane coupling agent, amino hydrocarbyl silane coupling agent, epoxy hydrocarbyl silane coupling agent, methacryloxy siloxane silane coupling agent and sulfur-containing hydrocarbyl silane coupling agent.
The processing aid is selected from one or a mixture of fatty acid esters, fatty acid amides, fatty acid salts and fatty alcohols.
The above-mentioned aging-resistant, high-and-low-temperature-resistant rubber gasket material, wherein the vulcanizing agent is selected from one or more of hydroperoxide (ROOH), dialkyl peroxide (ROOR '), diacyl peroxide (RCOOCR'), peroxyester (RCOOOR '), peroxycarbonate (ROOOOOCOR'), and ketone peroxide [ R2C (OOH)2 ]; the co-vulcanizing agent is selected from one of methacrylate, bismaleimide and polybutadiene resin; the preferred sulfurizing agent is dicumyl peroxide; the co-vulcanizing agent is trimethylolpropane triacrylate.
As a general inventive concept, the invention also provides a preparation method of the anti-aging and high and low temperature resistant rubber gasket material, which comprises the following steps:
(1) firstly, mixing VNB type ethylene propylene diene monomer rubber, metal oxide, processing aid, 2-mercaptobenzimidazole and 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine for 2-4 minutes;
(2) adding an inorganic reinforcing filler, carbon black, a softener and a coupling agent, mixing, removing rubber and cooling to obtain a section of rubber compound, wherein when the temperature of the rubber compound reaches 145 ℃, mixing is continued for 2-4 minutes, when the temperature of the rubber compound reaches more than 155 ℃, mixing is stopped and the rubber is removed, and the cooling temperature of the rubber compound is below 50 ℃;
(3) mixing the first-stage rubber compound with a vulcanizing agent and an auxiliary vulcanizing agent, and thinly passing the mixed rubber compound through a lower sheet to prepare a second-stage rubber compound, wherein the mixing is stopped and the rubber is discharged when the temperature of the rubber compound reaches over 100 ℃ in the mixing process; the number of thin passing is 3-5;
(4) and (3) standing the two-stage rubber compound, and vulcanizing to obtain the ageing-resistant and high-low temperature-resistant rubber gasket material.
In the preparation method, in the step (4), the standing time of the rubber material after the two-stage mixing is not less than 16 hours; the vulcanization mode is injection molding or mould pressing, the vulcanization temperature is 160-180 ℃, and the vulcanization time is 10-30 minutes.
The invention gives full play to the characteristics of large weight average relative molecular mass, moderate relative molecular mass distribution and high long chain branching degree of the VNB type ethylene propylene diene monomer, and compared with the traditional EPDM with ENB (5-ethylidene-2-norbornene) and DCPD (dicyclopentadiene) as the third monomer, the VNB type ethylene propylene diene monomer has high vulcanization speed and small consumption of peroxide vulcanizing agent; under the condition of equivalent consumption of vulcanizing agents, the VNB type ethylene propylene diene rubber compound has higher crosslinking density, low peroxide residual amount and residual unsaturation degree, excellent comprehensive physical properties, better high temperature resistance and wear resistance and longer service life.
The anti-aging agent is specifically selected from 2-mercaptobenzimidazole and 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, the anti-aging agent is combined with VNB type ethylene propylene diene monomer, high-temperature mixing is carried out, the aging resistance of the material at high temperature is improved, the excellent physical and mechanical properties of the material are maintained at high temperature (180 ℃), and besides, the rubber gasket material still has good low-temperature brittle crack resistance in a low-temperature range (as low as-57 ℃).
According to the invention, the inorganic reinforcing filler and the coupling agent are reacted at high temperature, so that the combination effect of the VNB ethylene propylene diene monomer rubber and the inorganic reinforcing filler is improved, the tensile property and the wear resistance of the material in use are improved, and the compression permanent deformation of the material in use is reduced.
The preparation method prepares the rubber cushion plate rubber compound with ageing resistance and high and low temperature resistance by a multi-time mixing mode, firstly, VNB type ethylene propylene diene monomer raw rubber, metal oxide, an anti-aging agent and the like are uniformly mixed at low temperature, so that the metal oxide and the anti-aging agent can be uniformly dispersed in rubber, then, reinforcing filler, coupling agent, softener and carbon black with larger dosage are added and uniformly mixed, then, high-temperature treatment is carried out, the surface active group of the reinforcing filler is interacted with a rubber molecular chain, the compatibility of the filler and a rubber matrix is better, so that better tensile strength, compression permanent deformation and wear resistance are obtained, and then, vulcanizing agent and co-vulcanizing agent are added at low temperature, so that longer scorching time can be obtained; finally, vulcanizing for 10-30 min at the vulcanization temperature of 160-180 ℃ by using a mold of the rubber base plate to obtain the rubber base plate with excellent performance; the preparation method further ensures that the rubber gasket material has good tensile strength, compression permanent deformation performance, wear resistance, aging resistance, high and low temperature resistance, rigidity stability and durability.
The invention has the beneficial effects that:
VNB type ethylene propylene diene monomer is used as a main component, 2-mercaptobenzimidazole and 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine are matched according to a certain proportion, two anti-aging agents can play a synergistic effect in a VNB type ethylene propylene diene monomer system, and the prepared rubber gasket material not only has good aging resistance, but also has good high and low temperature resistance, wherein the use temperature can reach 180 ℃, the low temperature is below minus 57 ℃, and the temperature tolerance range of the conventional rubber gasket is further widened from minus 30 ℃ to 100 ℃.
The aging-resistant and high-low temperature-resistant rubber base plate can meet the standard requirements of domestic rubber base plates, can be used for preparing rubber base plates for various rail transit, and further improves the aging resistance, high-low temperature resistance, durability and the like of the rubber base plate on the basis of the original standard.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
Example 1:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 10 parts of zinc oxide, 5 parts of tin oxide, 2 parts of processing aids, 1 part of 2-mercaptobenzimidazole, 3 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 2 parts of silane coupling agents, 40 parts of carbon black, 30 parts of modified argil, 30 parts of white carbon black, 10 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
The aging-resistant and high-low temperature-resistant rubber base plate is prepared by the following method:
(1) adding VNB type ethylene propylene diene monomer, zinc oxide, tin oxide, 2-mercaptobenzimidazole, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine and a processing aid into an internal mixer according to the weight of the raw materials, and mixing for 2 minutes;
(2) adding the modified argil, the white carbon black, the coupling agent, the softener and the carbon black into an internal mixer for mixing, mixing for 3 minutes when the temperature of the rubber material reaches 145 ℃, discharging the rubber and cooling when the temperature reaches 155 ℃ to prepare a first-section rubber compound;
(3) cooling the first-stage rubber compound to below 50 ℃, adding the first-stage rubber compound, dicumyl peroxide and trimethylolpropane triacrylate into the internal mixer again for mixing, and discharging rubber when the temperature of the rubber compound reaches above 100 ℃; thinly passing through an open mill for 3 times to prepare a two-stage rubber compound;
(4) standing the secondary rubber compound for 16 hours for vulcanization treatment; the vulcanization mode is mould pressing, a mould of the rubber cushion plate is used, the vulcanization temperature is 170 ℃, and the vulcanization time is 25 minutes, so that the anti-aging and high and low temperature resistant rubber cushion plate is obtained.
Example 2:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 10 parts of zinc oxide, 10 parts of magnesium oxide, 2152 parts of processing aid WB2152 parts, 2 parts of 2-mercaptobenzimidazole, 4 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 4 parts of coupling agent KH5702 parts, carbon black N37540 parts, 35 parts of modified argil, 30 parts of white carbon black, 228015 parts of paraffin oil, 3.5 parts of dicumyl peroxide and 1.5 parts of trimethylolpropane triacrylate.
The aging-resistant and high-low temperature-resistant rubber base plate is prepared by the following method:
(1) adding VNB type ethylene propylene diene monomer, zinc oxide, magnesium oxide, 2-mercaptobenzimidazole, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine and a processing aid WB215 into an internal mixer according to the weight of the raw materials, and mixing for 2 minutes;
(2) adding modified pottery clay, carbon black N375, white carbon black, a coupling agent KH570, paraffin oil 2280 and carbon black into an internal mixer for mixing, mixing for 3 minutes when the temperature of the rubber material reaches 145 ℃, discharging rubber and cooling when the temperature reaches 155 ℃ to prepare a first-section rubber compound;
(3) cooling the first-stage rubber compound to below 50 ℃, adding the first-stage rubber compound, dicumyl peroxide and trimethylolpropane triacrylate into the internal mixer again for mixing, and discharging rubber when the temperature of the rubber compound reaches above 100 ℃; thinly passing through an open mill for 3 times to prepare a two-stage rubber compound;
(4) standing the secondary rubber compound for 18 hours for vulcanization treatment; the vulcanization mode is mould pressing, a mould of the rubber cushion plate is used, the vulcanization temperature is 180 ℃, and the vulcanization time is 20 minutes, so that the anti-aging and high and low temperature resistant rubber cushion plate is obtained.
Example 3:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 5 parts of zinc oxide, 10 parts of magnesium oxide, 2 parts of processing aid, 2 parts of 2-mercaptobenzimidazole, 5 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 4 parts of silane coupling agent, 35 parts of carbon black N55035, 35 parts of modified kaolin, 30 parts of white carbon black, 15 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
The preparation method is the same as example 1.
Example 4:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 5 parts of zinc oxide, 5 parts of magnesium oxide, 4 parts of processing aid, 2 parts of 2-mercaptobenzimidazole, 3 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 3 parts of silane coupling agent, carbon black N66025 parts, 35 parts of modified kaolin, 30 parts of modified argil, 20 parts of liquid rubber, 3 parts of dicumyl peroxide and 2 parts of trimethylolpropane triacrylate.
The preparation method is the same as example 2.
Comparative example 1:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 5 parts of zinc oxide, 10 parts of magnesium oxide, 2 parts of processing aid, 2 parts of 2-mercaptobenzimidazole, 5 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 4 parts of silane coupling agent, 35 parts of carbon black N55035 parts, 35 parts of modified kaolin, 30 parts of white carbon black, 15 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
The preparation method is the same as example 1.
Natural rubber was used as the raw material, and the other raw materials and contents were the same as in example 3.
Comparative example 2:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of ENB type ethylene propylene diene monomer, 10 parts of zinc oxide, 5 parts of tin oxide, 2 parts of processing aid, 1 part of 2-mercaptobenzimidazole, 3 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 2 parts of silane coupling agent, 40 parts of carbon black, 30 parts of modified argil, 30 parts of white carbon black, 10 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
The preparation method is the same as example 1.
ENB type ethylene propylene diene monomer was used as a raw material, and the other raw materials and contents were the same as those in example 1.
Comparative example 3:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 10 parts of zinc oxide, 5 parts of tin oxide, 2 parts of processing aid, 1 part of 2-mercaptobenzimidazole, 2 parts of silane coupling agent, 40 parts of carbon black, 30 parts of modified argil, 30 parts of white carbon black, 10 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
The preparation method is the same as example 1.
The raw material used was a single aging agent, 2-mercaptobenzimidazole, and the other raw materials and contents were the same as in example 1.
Comparative example 4:
an anti-aging high-low temperature resistant rubber gasket material is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 10 parts of zinc oxide, 10 parts of magnesium oxide, 2152 parts of processing aid WB, 4 parts of 2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, 2 parts of silane coupling agent, 3 parts of carbon black N37540, 35 parts of modified argil, 30 parts of white carbon black, 228015 parts of paraffin oil, 3.5 parts of dicumyl peroxide and 1.5 parts of trimethylolpropane triacrylate.
The preparation method is the same as example 2.
2, 2, 4-trimethyl-1, 2-dihydroquinoline polymer was used as an aging agent in the raw materials, and other raw materials and contents were the same as in example 2.
The data on the performances of the above examples 1 to 4 of the present invention and comparative examples 1 to 4 are shown in Table 1.
TABLE 1 results of physical Properties
As can be seen from Table 1, the rubber gasket material of the present invention has excellent mechanical properties, and has significant advantages in hardness ( mol type A), tensile strength after aging, elongation at break, high temperature compression set, low temperature brittleness, etc., as compared with comparative examples 1-4. The rubber base plate has long service life in special environment, can reduce the frequent replacement of the rubber base plate in the using process, meets the standard requirements of the domestic rubber base plate, and can be used as various rubber base plates for rail transit.
Claims (10)
1. The aging-resistant and high-low temperature-resistant rubber gasket material is characterized by being prepared from the following raw materials in parts by weight:
100 parts of VNB type ethylene propylene diene monomer;
30-80 parts of inorganic reinforcing filler;
25-45 parts of carbon black;
5-25 parts of a softener;
5-20 parts of metal oxide;
3-8 parts of an anti-aging agent;
1-4 parts of a coupling agent;
2-4 parts of a processing aid;
2-5 parts of a vulcanizing agent;
0.5 to 2 portions of auxiliary vulcanizing agent,
the temperature tolerance interval of the rubber gasket material is-57 ℃ to 180 ℃.
2. The aging-resistant, high and low temperature-resistant rubber gasket material of claim 1, wherein the aging inhibitor is 1-3 parts of 2-mercaptobenzimidazole and 2-5 parts of 4, 4' -bis (d, α -dimethylbenzyl) diphenylamine.
3. The aging-resistant, high and low temperature-resistant rubber gasket material of claim 2, wherein the inorganic reinforcing filler is selected from one or more of modified china clay, white carbon black and modified kaolin; the carbon black is selected from one or more of N330, N375, N660 and N550.
4. The aging-resistant, high and low temperature-resistant rubber gasket material of claim 3, wherein the metal oxide is selected from one or more of magnesium oxide, zinc oxide, iron oxide, tin oxide; preferably, the metal oxide is zinc oxide and magnesium oxide.
5. The aging-resistant, high and low temperature-resistant rubber mat material of claim 4, wherein the coupling agent is selected from one or more of vinyl silane coupling agents, chlorohydrocarbyl silane coupling agents, aminoalkyl silane coupling agents, epoxyhydrocarbyl silane coupling agents, methacryloxy silane coupling agents, and sulfur-containing hydrocarbyl silane coupling agents.
6. An age-resistant, high and low temperature resistant rubber mat material as defined in claim 5 wherein said vulcanizing agent is selected from the group consisting of dialkyl peroxides (ROOR '), diacyl peroxides (RCOOCR'), peroxyesters (RCOOOR '), peroxycarbonates (ROOOOOCOR'), and ketone peroxides [ R ] s2C(OOH)2]One or more of (a).
7. The aging-resistant, high and low temperature-resistant rubber gasket material of claim 6, wherein the co-vulcanizing agent is selected from one or more of methacrylates, bismaleimides, and polybutadiene resins.
8. The aging-resistant high-low temperature-resistant rubber gasket material as claimed in any one of claims 1-7, which is prepared from the following raw materials in parts by weight: 100 parts of VNB type ethylene propylene diene monomer rubber, 10 parts of zinc oxide, 5 parts of tin oxide, 2 parts of processing aids, 1 part of 2-mercaptobenzimidazole, 3 parts of 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine, 2 parts of silane coupling agents, 40 parts of carbon black, 30 parts of modified argil, 30 parts of white carbon black, 10 parts of liquid rubber, 3 parts of dicumyl peroxide and 1 part of trimethylolpropane triacrylate.
9. A method for preparing an aging-resistant, high and low temperature-resistant rubber gasket material according to any one of claims 1 to 8, comprising the steps of:
(1) firstly, mixing VNB type ethylene propylene diene monomer rubber, metal oxide, processing aid, 2-mercaptobenzimidazole and 4, 4' -bis (alpha, alpha-dimethylbenzyl) diphenylamine for 2-4 minutes;
(2) adding an inorganic reinforcing filler, carbon black, a softener and a coupling agent, mixing, removing rubber and cooling to obtain a section of rubber compound, wherein when the temperature of the rubber compound reaches 145 ℃, mixing is continued for 2-4 minutes, when the temperature of the rubber compound reaches more than 155 ℃, mixing is stopped and the rubber is removed, and the cooling temperature of the rubber compound is below 50 ℃;
(3) mixing the first-stage rubber compound with a vulcanizing agent and an auxiliary vulcanizing agent, and thinly passing the mixed rubber compound through a lower sheet to prepare a second-stage rubber compound, wherein the mixing is stopped and the rubber is discharged when the temperature of the rubber compound reaches over 100 ℃ in the mixing process; the number of thin passing is 3-5;
(4) and (3) standing the two-stage rubber compound, and vulcanizing to obtain the ageing-resistant and high-low temperature-resistant rubber gasket material.
10. The method for preparing an aging-resistant and high-low temperature-resistant rubber gasket material as claimed in claim 9, wherein in the step (4), the standing time of the rubber compound after the second-stage mixing is not less than 16 hours; the vulcanization mode is injection molding or mould pressing, the vulcanization temperature is 160-180 ℃, and the vulcanization time is 10-30 minutes.
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| CN202111427870.3A CN114163739A (en) | 2021-11-25 | 2021-11-25 | Ageing-resistant and high-low temperature-resistant rubber gasket material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634676A (en) * | 2022-04-29 | 2022-06-17 | 重庆丰海坤翔实业(集团)有限公司 | Ethylene propylene rubber wiper strip and preparation method thereof |
| CN114644796A (en) * | 2022-05-06 | 2022-06-21 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Ablation-resistant rubber for aviation and preparation method and application thereof |
-
2021
- 2021-11-25 CN CN202111427870.3A patent/CN114163739A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634676A (en) * | 2022-04-29 | 2022-06-17 | 重庆丰海坤翔实业(集团)有限公司 | Ethylene propylene rubber wiper strip and preparation method thereof |
| CN114644796A (en) * | 2022-05-06 | 2022-06-21 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Ablation-resistant rubber for aviation and preparation method and application thereof |
| CN114644796B (en) * | 2022-05-06 | 2023-10-20 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Ablation-resistant rubber for aviation and preparation method and application thereof |
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