CN112920517A - Electrolyte-resistant ethylene propylene diene monomer rubber and preparation method thereof - Google Patents
Electrolyte-resistant ethylene propylene diene monomer rubber and preparation method thereof Download PDFInfo
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- CN112920517A CN112920517A CN202110226237.1A CN202110226237A CN112920517A CN 112920517 A CN112920517 A CN 112920517A CN 202110226237 A CN202110226237 A CN 202110226237A CN 112920517 A CN112920517 A CN 112920517A
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- Prior art keywords
- diene monomer
- ethylene propylene
- propylene diene
- components
- electrolyte
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Links
- 229920002943 EPDM rubber Polymers 0.000 title claims abstract description 41
- 239000003792 electrolyte Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000006229 carbon black Substances 0.000 claims abstract description 36
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 18
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims description 24
- 239000005060 rubber Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 15
- -1 isonitrile urate Chemical class 0.000 claims description 10
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000008961 swelling Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 description 8
- 239000002994 raw material Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000010060 peroxide vulcanization Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- QVTVDJWJGGEOGX-UHFFFAOYSA-N urea;cyanide Chemical compound N#[C-].NC(N)=O QVTVDJWJGGEOGX-UHFFFAOYSA-N 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/019—Specific properties of additives the composition being defined by the absence of a certain additive
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention relates to electrolyte-resistant ethylene propylene diene monomer rubber which comprises the following components in percentage by weight: 45-48% of raw ethylene propylene diene monomer rubber, 0.3-0.7% of aramid fiber, 24-27% of N550 carbon black, 13-15% of N774 carbon black, 13-15% of talcum powder, 4-5.2g/kg, 6-7.5g/kg and 6-7.5g/kg of triallyl isocyanurate, dicumyl peroxide and a dipentavulcanizing agent which are respectively added into the total weight of the components, and a preparation method of the electrolyte-resistant ethylene propylene diene monomer rubber is also disclosed. The invention improves the electrolyte resistance of the ethylene propylene diene monomer and reduces the volume swelling ratio.
Description
Technical Field
The invention relates to ethylene propylene diene monomer, in particular to electrolyte-resistant ethylene propylene diene monomer and a preparation method thereof.
Background
Ethylene Propylene Diene monomer, which is a copolymer of ethylene, Propylene and a small amount of non-conjugated Diene, is one of ethylene Propylene rubbers, and its main chain is composed of chemically stable saturated hydrocarbons, and only contains unsaturated double bonds in the side chains, so that it has excellent aging resistance such as ozone resistance, heat resistance, weather resistance, etc., and can be widely used in the fields of automobile parts, waterproof materials for buildings, wire and cable sheaths, heat-resistant rubber tubes, tapes, automobile seals, etc. Because the ethylene propylene rubber has low unsaturation degree and lacks polarity, the ethylene propylene rubber has better resistance to various polar chemicals such as alcohol, acid, alkali, oxidant, refrigerant, detergent, animal and vegetable oil, ketone, grease and the like; but the stability in grease and aromatic solvents (such as gasoline, benzene and the like) and mineral oil is poor, the performance is also reduced under the long-term action of concentrated acid, and particularly, the performance of rubber in the existing formula is rapidly reduced in electrolyte, the volume is swelled, and the application is limited.
Disclosure of Invention
Aiming at the existing defects, the invention provides electrolyte-resistant ethylene propylene diene monomer rubber and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: electrolyte-resistant ethylene propylene diene monomer comprises the following components in percentage by weight: 45-48% of ethylene propylene diene monomer raw rubber, 0.3-0.7% of aramid fiber, 24-27% of N550 carbon black, 13-15% of N774 carbon black, 13-15% of talcum powder, and also comprises triallyl isonitrile urate, dicumyl peroxide and a dipentavulcanizing agent, wherein the triallyl isonitrile urate is added in an amount of 4-5.2g/kg in the total weight of the components, the dicumyl peroxide is added in an amount of 6-7.5g/kg in the total weight of the components, and the dipentavulcanizing agent is added in an amount of 6-7.5g/kg in the total weight of the components.
Preferably, the weight percentages of the components are as follows: 46.2% of ethylene propylene diene monomer crude rubber, 0.5% of aramid fiber, 25.5% of N550 carbon black, 13.9% of N774 carbon black and 13.9% of talcum powder, wherein the addition amount of the triallyl isocyanurate in the total weight of the components is 4.6g/kg, the addition amount of the dicumyl peroxide in the total weight of the components is 6.9g/kg, and the addition amount of the dipenta vulcanizing agent in the total weight of the components is 6.9 g/kg.
A preparation method of electrolyte-resistant ethylene propylene diene monomer is characterized by comprising the following steps,
s1, banburying the ethylene propylene diene monomer crude rubber for 90 seconds;
s2, sequentially adding aramid fiber, N550 carbon black, N774 carbon black and talcum powder into the internally mixed raw ethylene propylene diene monomer rubber in proportion to carry out pumping, hammering and internally mixing, discharging after the temperature is raised to a specified temperature, and carrying out turnover mixing for multiple times;
s3, adding the cross-linking agent mixed by the triallyl isonitrile uracyl ester and the dicumyl peroxide and the dipenta vulcanizing agent into the turned and mixed rubber material for mixing.
Preferably, in step S2, the components are added and mixed, and the temperature is raised to 125 ℃, then the black smoke of the pressure-extraction hammer and the mixing port is swept to the mixing chamber, then the pressure-extraction hammer is placed, the time of the pressure-extraction hammer is once when the temperature is 5 ℃ per liter, and the discharging is performed with the tumbling after the mixing temperature is raised to 140 ℃.
Preferably, the turnover is carried out through a turnover machine, the turnover time is 4 minutes, and the distance between rollers of the turnover machine is 6 mm.
Preferably, the weight percentages of the components are as follows: 45-48% of ethylene propylene diene monomer raw rubber, 0.3-0.7% of aramid fiber, 24-27% of N550 carbon black, 13-15% of N774 carbon black and 13-15% of talcum powder, wherein the triallyl isonitrile urethane acrylate is added in an amount of 4-5.2g/kg in the total weight of the components, the dicumyl peroxide is added in an amount of 6-7.5g/kg in the total weight of the components, and the dipentavulcanizing agent is added in an amount of 6-7.5g/kg in the total weight of the components.
Preferably, the weight percentages of the components are as follows: 46.2% of ethylene propylene diene monomer crude rubber, 0.5% of aramid fiber, 25.5% of N550 carbon black, 13.9% of N774 carbon black and 13.9% of talcum powder, wherein the addition amount of the triallyl isocyanurate in the total weight of the components is 4.6g/kg, the addition amount of the dicumyl peroxide in the total weight of the components is 6.9g/kg, and the addition amount of the dipenta vulcanizing agent in the total weight of the components is 6.9 g/kg.
Preferably, the mixing in step S3 is performed in an open mill.
The invention has the beneficial effects that: according to the ethylene propylene diene monomer disclosed by the invention, a plasticizer in a traditional formula is removed, the problem of swelling caused by reaction of the plasticizer in an electrolyte is avoided, the carbon black adopts two kinds of carbon black to be mixed for use, the performance of a complementary reinforced product is formed, the N550 carbon black is easy to disperse, the material can be dispersed more uniformly, the N774 carbon black has high elongation, high elasticity and good aging resistance, the physical property of the product is improved, in the preparation method, auxiliary materials are added in an internal mixing stage to ensure the material to be dispersed uniformly, and a cross-linking agent is added in a final stage to form a peroxide vulcanization system, so that the material has better cross-linking density, the problem of scorching of the material is avoided, and the material obtains better performance.
Detailed Description
To more clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described with reference to the following embodiments, which are clearly and completely described, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
The embodiment of the invention discloses a wear-resistant ethylene propylene diene monomer, which comprises the following preparation steps,
s1, banburying the ethylene propylene diene monomer raw material for 90 seconds, preparing by using KEP-330 ethylene propylene diene monomer, weighing 27kg, and banburying for 90 seconds, wherein banburying can be carried out by selecting an open mill or a banbury mixer;
s2, adding aramid fiber (AF25), N550 carbon black, N774 carbon black and talcum powder (TALC) into the internally mixed KEP-330 raw material in sequence according to the proportion, mixing the materials into the KEP-330 raw material, mixing at 125 deg.C, pumping, beating and banburying, heating to specified temperature, discharging, and turning for multiple times, thus, the carbon black is mixed by two kinds of carbon black in the whole formula to form the performance of a complementary reinforced product, the N550 carbon black is easy to disperse and can ensure that the material is dispersed more uniformly, the N774 carbon black has high elongation, high elasticity and good aging resistance, the physical property of the product is improved, the aramid fiber (AF25) has low density, good corrosion resistance and good thermal stability, the talcum powder (TALC) reduces the permeability and further improves the heat resistance, and the carbon black and the TALC powder are added after the raw materials are banburied for 90 seconds, so that the carbon black and the aramid fiber are dispersed more uniformly in the raw materials and the physical property of the product can be effectively improved; adding auxiliary materials in the step, heating to 125 ℃, sweeping a pressure-pumping hammer and black smoke at an internal mixing port to an internal mixing chamber, then putting the pressure-pumping hammer into the internal mixing chamber, pumping the hammer once when the temperature is 5 ℃ per liter, discharging after the internal mixing temperature is raised to 140 ℃, and turning; in the process of turning, the turning is carried out by a turning machine, the rubber material after being pumped and beaten is poured out and guided into the turning machine for turning, the turning time is 4 minutes, and the distance between rollers of the turning machine is 6 mm;
s3, adding a cross-linking agent mixed by triallyl isonitrile urea (TAIC) and dicumyl peroxide (DCP) and a bis-penta vulcanizing agent (101-50D) as an accelerator into the turned rubber compound, mixing, and carrying out the reaction in an open mill, wherein the TAIC and the DCP are added into the rubber compound as cross-linking agents to form a peroxide vulcanization system to promote the vulcanization reaction of the rubber compound and improve the performance of the rubber compound, the added amounts of the TAIC, the DCP and the 101-50D are proportionally added according to the total weight of the rubber compound, the TAIC is added in a manner of adding 4.6g of the rubber compound per kilogram, the added amount is 268.3g, the DCP is added in a manner of adding 6.9g of the rubber compound per kilogram, the added amount is 402.41g, the added amount of the 101-50D is added in a manner of adding 6.9g of the rubber compound per kilogram, the added amount is 402.41g, and the cross-linking agents and the vulcanizing agents are added in the final stage, the formed peroxide vulcanization system enables the material to have better crosslinking density, avoids the problem of material scorching and obtains better physical properties. The ethylene propylene diene monomer removes the plasticizer in the traditional formula, and avoids the problem of swelling caused by the reaction of the plasticizer in electrolyte.
Thus, the ethylene propylene diene monomer is modified, the wear resistance is improved, and the content of each component before adding the cross-linking agent and the vulcanizing agent is as follows: 46.2 percent of ethylene propylene diene monomer raw rubber (KEP-330), 0.5 percent of aramid fiber (AF25), 25.5 percent of N550 carbon black, 13.9 percent of N774 carbon black and 13.9 percent of talcum powder (TALC), and then 268.3g of triallyl isonitrile urate (TAIC), 402.41g of dicumyl peroxide (DCP) and 402.41g of dipenta vulcanizing agent (101-50D) are added.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. An electrolyte-resistant ethylene propylene diene monomer rubber, characterized in that: comprises the following components in percentage by weight: 45-48% of ethylene propylene diene monomer raw rubber, 0.3-0.7% of aramid fiber, 24-27% of N550 carbon black, 13-15% of N774 carbon black, 13-15% of talcum powder, and also comprises triallyl isonitrile urate, dicumyl peroxide and a dipentavulcanizing agent, wherein the triallyl isonitrile urate is added in an amount of 4-5.2g/kg in the total weight of the components, the dicumyl peroxide is added in an amount of 6-7.5g/kg in the total weight of the components, and the dipentavulcanizing agent is added in an amount of 6-7.5g/kg in the total weight of the components.
2. The electrolyte-resistant ethylene propylene diene monomer rubber according to claim 1, wherein the electrolyte-resistant ethylene propylene diene monomer rubber comprises the following components in percentage by weight: 46.2% of ethylene propylene diene monomer crude rubber, 0.5% of aramid fiber, 25.5% of N550 carbon black, 13.9% of N774 carbon black and 13.9% of talcum powder, wherein the addition amount of the triallyl isocyanurate in the total weight of the components is 4.6g/kg, the addition amount of the dicumyl peroxide in the total weight of the components is 6.9g/kg, and the addition amount of the dipenta vulcanizing agent in the total weight of the components is 6.9 g/kg.
3. A preparation method of electrolyte-resistant ethylene propylene diene monomer is characterized by comprising the following steps,
s1, banburying the ethylene propylene diene monomer crude rubber for 90 seconds;
s2, sequentially adding aramid fiber, N550 carbon black, N774 carbon black and talcum powder into the internally mixed raw ethylene propylene diene monomer rubber in proportion to carry out pumping, hammering and internally mixing, discharging after the temperature is raised to a specified temperature, and carrying out turnover mixing for multiple times;
s3, adding the cross-linking agent mixed by the triallyl isonitrile uracyl ester and the dicumyl peroxide and the dipenta vulcanizing agent into the turned and mixed rubber material for mixing.
4. The method according to claim 3, wherein in step S2, the components are added and mixed, and the temperature is raised to 125 ℃, then the black smoke of the pressure hammer and the mixing port is swept out to the mixing chamber, then the pressure hammer is placed into the mixing chamber, the pressure hammer is once pumped when the temperature is 5 ℃ per liter, and the discharging is performed with the tumbling after the mixing temperature is raised to 140 ℃.
5. The method for preparing electrolyte-resistant ethylene-propylene-diene monomer rubber according to claim 3, wherein the tumbling is carried out by a tumbler with a tumbling time of 4 minutes and a tumbler roller spacing of 6 mm.
6. The method for preparing the electrolyte-resistant ethylene propylene diene monomer rubber according to claim 3, wherein the electrolyte-resistant ethylene propylene diene monomer rubber comprises the following components in percentage by weight: 45-48% of ethylene propylene diene monomer raw rubber, 0.3-0.7% of aramid fiber, 24-27% of N550 carbon black, 13-15% of N774 carbon black and 13-15% of talcum powder, wherein the triallyl isonitrile urethane acrylate is added in an amount of 4-5.2g/kg in the total weight of the components, the dicumyl peroxide is added in an amount of 6-7.5g/kg in the total weight of the components, and the dipentavulcanizing agent is added in an amount of 6-7.5g/kg in the total weight of the components.
7. The method for preparing the electrolyte-resistant ethylene propylene diene monomer rubber according to claim 6, wherein the electrolyte-resistant ethylene propylene diene monomer rubber comprises the following components in percentage by weight: 46.2% of ethylene propylene diene monomer crude rubber, 0.5% of aramid fiber, 25.5% of N550 carbon black, 13.9% of N774 carbon black and 13.9% of talcum powder, wherein the addition amount of the triallyl isocyanurate in the total weight of the components is 4.6g/kg, the addition amount of the dicumyl peroxide in the total weight of the components is 6.9g/kg, and the addition amount of the dipenta vulcanizing agent in the total weight of the components is 6.9 g/kg.
8. The method for producing an electrolyte-resistant ethylene-propylene-diene monomer rubber according to claim 3, wherein the mixing in step S3 is performed in an open mill.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110226237.1A CN112920517A (en) | 2021-03-01 | 2021-03-01 | Electrolyte-resistant ethylene propylene diene monomer rubber and preparation method thereof |
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| CN202110226237.1A CN112920517A (en) | 2021-03-01 | 2021-03-01 | Electrolyte-resistant ethylene propylene diene monomer rubber and preparation method thereof |
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