CN101638494A - Ethylene propylene diene rubber material - Google Patents
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Abstract
The invention provides an ethylene propylene diene rubber material. The material is a product formed by mixing and sulfurizing a mixture containing ethylene propylene diene rubber, sulfur and a sulfur-bearing accelerating agent, wherein the mixture also contains an additive which contains benzimidazole compounds and paraffin hydrocarbon. According to the ethylene propylene diene rubber material, the additive is added to the mixed mixture so that the ethylene propylene diene rubber does not corrode metal or has small corrosion, can maintain various performances of the ethylene propylene diene rubber material, and can be applied to the occasions matched with metals to further widen the application field of the ethylene propylene diene rubber.
Description
Technical field
The present invention relates to a kind of ethylene propylene diene monomer (EPDM) material.
Background technology
Terpolymer EP rubber is obtained by ethene, propylene and the polymerization in the presence of catalyzer of three kinds of monomers of diene, mainly contains ethylidene norbornene, dicyclopentadiene and 1,4-hexadiene etc. as the 3rd monomeric diene.Terpolymer EP rubber has good chemical stability, and its ozone resistance, ageing resistance, resistance to chemical reagents, weathering resistance and thermotolerance are all very excellent.Its main production method is solution or the suspension polymerization of being undertaken by Ziegler-Natta catalyst.Be mainly used in high level cable material, trolley part and especially be used as weather strip for automobile, windproof and rain proof adhesive plaster, waterproof building material, radiator rubber hose, incabloc and tyre side tire etc.In addition, terpolymer EP rubber also is widely used in electronic product sealing, top-grade furniture, builds a bridge and stadiums construction etc.
Usually,, especially increase the elasticity of terpolymer EP rubber, need terpolymer EP rubber be vulcanized with sulphur in order to improve and improve the use properties of terpolymer EP rubber.But because the vulcanization rate of terpolymer EP rubber is very slow, in order to solve the slow problem of terpolymer EP rubber vulcanization rate, people are often by adding promotor and selecting the extra high thiuram type accelerator of catalytic activity to improve vulcanization rate, but the ethylene propylene diene monomer (EPDM) material after using promotor to vulcanize can produce corrosion to metal during with metallic contact, can corrode the metal generation when for example being used for the sealed strip of automobile when especially ethylene propylene diene monomer (EPDM) material and metal being used.
CN1281886A discloses a kind of preparation method of EPDM rubber waterproof rolling material, wherein, select for use proportioning raw materials in weight ratio, terpolymer EP rubber 60-70, isoprene-isobutylene rubber 10-26, chloroprene rubber 4-25, at first these three kinds of glue one plasticate, enter Banbury mixer then and add carbon black 50-70 again, fine particle calcium carbonate 50-70, coumarone 2-7, pitch 2-10, naphthenic oil 10-20, zinc oxide 5-10, four [methene-3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] for methane 0.5-1, stearic acid 0.7-1.2, di-mercaptobenzothiazolby 0.2-1.5, dibenzothiazyl disulfide 0.5-1.5, tetramethyl-thiuram disulfide 0.5-1.5, zinc methylphenyldithiocarbamate 0.1-0.7, ethylene thiourea 0.1-1, sulphur 0.5-1.5 is mixing, enter the mill heat refining after the discharging again, discharging enters the shaper moulding, head temperature 70-80 ℃, enter the vulcanizing plant sulfuration at last, curing temperature 145-160 ℃, sulfurizing time 10-110 minute.This waterproof roll has favorable waterproof property, the water-proof material that can be used for building, but this waterproof roll has corrosion to metal, and the also corresponding decline of performance of coiled material simultaneously, thereby can not be used for the field that is used with metal.
Summary of the invention
The objective of the invention is to overcome above-mentioned EPDM rubber waterproof rolling material of the prior art has the corrosive defective to metal, and providing a kind of can not have corrosion or corrodibility is very little and keep the ethylene propylene diene monomer (EPDM) material of the superperformance of rubber to metal.
The invention provides a kind of ethylene propylene diene monomer (EPDM) material, the product that this material is mixing for the mixture that will contain terpolymer EP rubber, sulphur and sulfur containing promoter and sulfuration forms, wherein, described mixture also contains additive, and described additive contains benzimidazoles compound and paraffinic hydrocarbons.
Ethylene propylene diene monomer (EPDM) material provided by the invention, owing in mixing mixture, added additive, thereby can make ethylene propylene diene monomer (EPDM) material of the present invention very little less than corrosion or corrodibility to metal, and can keep the various performances of ethylene propylene diene monomer (EPDM) material, thereby can be used for the occasion that is used with metal, and then can widen the Application Areas of terpolymer EP rubber.
Embodiment
The product that ethylene propylene diene monomer (EPDM) material provided by the invention is mixing for the mixture that will contain terpolymer EP rubber, sulphur and sulfur containing promoter and sulfuration forms, wherein, described mixture also contains additive, and described additive contains benzimidazoles compound and paraffinic hydrocarbons.
When conventional ethylene propylene diene monomer (EPDM) material and metallic contact,, make the degradation of elastomeric material simultaneously usually metal being corroded with the position of metallic contact.Its reason is, for elasticity, use properties and the processing characteristics that improves terpolymer EP rubber, usually the terpolymer EP rubber that is polymerized need be vulcanized in the prior art, and the free sulphur that produces in sulfidation can react when contacting with heavy metals such as metal such as copper, iron or manganese, thereby generates heavy metallic salt.The heavy metal ion that heavy metallic salt decomposites has the intensive katalysis to the weathering process of elastomeric material, finally causes the performance of ethylene propylene diene monomer (EPDM) material sharply to descend, and also can turn black because of corrosion in the heavy metal surface.
The additive that contains benzimidazoles compound and paraffinic hydrocarbons used in the present invention can prevent ethylene propylene diene monomer (EPDM) material and Corrosion of Metallic Materials effectively by physics and chemical mechanism, wherein, benzimidazoles compound can form stable complex compound effectively with heavy metal, heavy metal can not reacted with free sulphur more also can not have catalytic capability the oxidation of elastomeric material, and paraffinic hydrocarbons such as normal paraffin and isoparaffin can be moved to product surface in the use of terpolymer EP rubber, can effectively elastomeric material and metal be kept apart, thereby prevent corrosion of metal.The two additive effect has reduced the corrodibility of ethylene propylene diene monomer (EPDM) material effectively.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, terpolymer EP rubber can be by commercially available, the for example EPDM7500 of the EPDM27 of the EPDM8340A of Dutch DSM and EPDM4903, JSR and EPDM35, EXXON and EPDM8600, also can be by well known to a person skilled in the art method, with the polymerization and obtaining in the presence of catalyzer of ethene, propylene and three kinds of monomers of diene, mainly contain ethylidene norbornene, dicyclopentadiene and 1,4-hexadiene etc. as the 3rd monomeric diene.The weight-average molecular weight of terpolymer EP rubber used in the present invention is 300,000-500,000, and the mol ratio of ethene, propylene and diene is 50-70: 25-45: 4-12.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, in described mixture, based on 100 weight part terpolymer EP rubbers, the content of sulphur is the 0.5-2 weight part, and the content of described sulfur containing promoter is the 3-10 weight part, be preferably the 4-6 weight part, content of additive is the 0.5-4 weight part, and the weight ratio 1-2 of benzimidazoles compound and paraffinic hydrocarbons: 1, be preferably 1-1.5: 1.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, described benzimidazoles compound can for example can be zinc salt of 2 mercaptobenzimidazole and/or 2-mercaptobenzimidazole for the various various benzimidazoles compounds that can form stable complex compound with heavy metal.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, the carbonatoms of described paraffinic hydrocarbons is 23-36, can make use temperature a wider range of resulting ethylene propylene diene monomer (EPDM) material, described paraffinic hydrocarbons comprises normal paraffin and isoparaffin, and this paraffinic hydrocarbons can select for use Microcrystalline Wax, SEMI-REFINED PARAFFIN WAX and be full of cracks to prevent among the agent OKERIN 1900/1H one or more.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, described sulfur containing promoter can be selected the various sulfur containing promoters of the conventional quickening vulcanization of rubber of using in this area, for example one or more in thiuram type accelerator, thiazole accelerator, Thiourea accelerator and the dithiocar-bamate promotor for use.
Wherein thiuram type accelerator can be in tetramethyl-thiuram disulfide, tetraethylthiuram disulfide, tetramethylthiuram monosulfide, tetramethylthiuram tetrasulfide and four sulfuration (pentamethylene) thiurams one or more;
Thiazole accelerator can be 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N, N-di-isopropyl-2-[4-morpholinodithio sulphenamide, N tert butyl benzothiazole 2 sulfenamide, N, N-dicyclohexyl-2-[4-morpholinodithio sulphenamide and N, in O-two (ethylene)-2-[4-morpholinodithio sulphenamide one or more;
Thiourea accelerator can be ethylene thiocarbamide, N, one or more in N-di-n-butyl thiocarbamide and the diphenyl thiourea.
Dithiocar-bamate promotor can be in ziram, zinc diethyldithiocarbamate, zinc dibutyl dithiocarbamate and the Selenium dimethyl dithiocarbamate one or more.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, described mixture also contains softening agent, described softening agent is the paraffinic base softening oil, the paraffinic base content of described paraffinic base softening oil greater than 70 weight %, be preferably 70-80 weight %, aromaticity content is less than 1 weight %, preferably less than 0.5 weight %, and flash-point is higher than 200 ℃, is preferably 220-300 ℃.Use this softening agent to provide good processing properties and low temperature use properties for ethylene propylene diene monomer (EPDM) material of the present invention.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, based on the terpolymer EP rubber of 100 weight parts, the content of described softening agent is the 50-80 weight part.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, described mixture also contains calcium oxide, and based on the terpolymer EP rubber of 100 weight parts, the content of described calcium oxide is the 3-8 weight part.The moisture that uses calcium oxide to absorb in the mixture to be contained, thus can prevent to produce pore in the ethylene propylene diene monomer (EPDM) material of the present invention and the strength property that influences this material.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, described mixture also contains one or more in zinc oxide, stearic acid, carbon black and the filler.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, one or more in zinc oxide, stearic acid and the carbon black that described mixture also contains in this area to be used always.Wherein, the heat conductivility of the sulfuration efficient when zinc oxide and stearic acid can improve the terpolymer EP rubber sulfuration, raising ethylene propylene diene monomer (EPDM) material, and improve the physical and mechanical property of ethylene propylene diene monomer (EPDM) material, the intensity that carbon black can improve elastomeric material is tensile strength, tear strength and wear resisting property for example, described filler can be the conventional filler that uses in this area, thereby can reduce the cost of this elastomeric material on the basis of the performance that does not influence ethylene propylene diene monomer (EPDM) material, described filler is one or more in lime carbonate, potter's clay and the talcum powder.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, under the preferable case, based on the terpolymer EP rubber of 100 weight parts, the content of zinc oxide is the 5-10 weight part, stearic content is the 1-2 weight part, and the content of carbon black is the 60-120 weight part, and the content of described filler is the 30-110 weight part.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, in described filler, the content of lime carbonate can be the 20-60 weight part, and the content of potter's clay can be the 10-50 weight part, and talcous content can be the 10-50 weight part.Lime carbonate can comprise water-ground limestone and light calcium carbonate.
According to ethylene propylene diene monomer (EPDM) material provided by the invention, the preparation method of this elastomeric material is for well known to a person skilled in the art, for example this preparation method may further comprise the steps: the mixture that will contain terpolymer EP rubber, sulphur and sulfur containing promoter under 60-150 ℃ temperature mixing 8-18 minute; Then with this mixture heating up to 150-180 ℃ the sulfuration 5-15 minute, vulcanize.
In the preferred case, when except that containing terpolymer EP rubber, additive, sulphur and sulfur containing promoter, also containing calcium oxide, zinc oxide, stearic acid, carbon black and filler in the described mixture, after needing earlier each composition of other except that additive, sulphur, calcium oxide and sulfur containing promoter in the mixture to be mixed, under 100-150 ℃ temperature, carried out one section mixing 5-10 minute, and made rubber master batch.Adding additive, sulphur, calcium oxide and sulfur containing promoter then in rubber master batch carried out two-stage mixing 3-8 minute at 60-70 ℃.Then mixture heating up to 150-180 ℃ of sulfuration vulcanized in 6-12 minute.
Described mixing and sulfurized method is known in those skilled in the art, and described sulfurized method can adopt the continuous curing method that well known to a person skilled in the art infrared-microwave-warm air, also can adopt flat vulcanizer to vulcanize.
Adopt the mode of specific embodiment that the present invention is described in further detail below.
Embodiment 1
Terpolymer EP rubber (EPDM8340A with 100 weight parts, Holland DSM), 60 parts by weight of carbon black (N550, the Shanghai Cabot), the ZnO of the potter's clay of the water-ground limestone of 40 weight parts, 10 weight parts, 5 weight parts is (homemade, purity 99.7%) and the stearic acid of 1.0 weight parts mix, obtain mixture.
With the above-mentioned mixture that obtains in the Banbury mixer of 50L (Shanghai one hundred great company limited produces), under 120 ℃, carry out one section mixing about 8 minutes, placed 24 hours, obtain rubber master batch.
With 1.5 weight part 2-mercaptobenzimidazoles (Huangyan, Zhejiang chemical industry three factories, MB), 0.5 weight part Microcrystalline Wax (Britain asto, Okerin1900), 1.2 the sulphur of weight part, 5.0 the calcium oxide of weight part, 0.4 weight part ziram, 1.0 weight part zinc dibutyl dithiocarbamate, 0.6 weight part tetramethyl-thiuram disulfide, 1.0 weight part 2-mercaptobenzothiazole and four sulfurations (1 of 1.0 weight parts, the 5-pentylidene) thiuram adds in the above-mentioned rubber master batch that obtains, in the glue machine that turns over (production of Sichuan Ya Xi rubber and plastic equipment company limited) of 550mm, under 60 ℃ temperature, carry out two-stage mixing 5 minutes to mixing, with this rubber unvulcanizate with the thickness thin-pass of 0.2mm three times.
Be 15MPa at pressure on the vulcanizer of 50T then, temperature is sulfuration 10 minutes under 170 ℃ the condition, and making thickness is the ethylene-propylene-diene monomer film of 2mm.
Comparative Examples 1
Method according to embodiment 1 prepares the ethylene-propylene-diene monomer film, and different is not add additive 2-sulfydryl benzo mew and Microcrystalline Wax.
Comparative Examples 2
Method according to embodiment 1 prepares the ethylene-propylene-diene monomer film, and different is not add the additive Microcrystalline Wax.
Comparative Examples 3
Method according to embodiment 1 prepares the ethylene-propylene-diene monomer film, and different is not add additive 2-sulfydryl benzo mew.
Embodiment 2
Terpolymer EP rubber (EPDM8340A with 100 weight parts, Holland DSM), 120 parts by weight of carbon black (N550, the Shanghai Cabot), the ZnO of the potter's clay of the water-ground limestone of 20 weight parts, 50 weight parts, 10 weight parts is (homemade, purity 99.7%) and the softening agent paraffin oil (2280 of the stearic acid of 1.5 weight parts and 60 weight parts, U.S.'s SUN) mixes, obtain mixture.
With the above-mentioned mixture that obtains in the Banbury mixer of 50L (Shanghai one hundred great company limited produces) at 100 ℃) under carry out one section mixing about 10 minutes, placed 24 hours, obtain rubber master batch.
With 0.4 weight part 2-mercaptobenzimidazole (Huangyan, Zhejiang chemical industry three factories, MB), 0.4 parts by weight O KERIN 19004 (Britain asto, Okerin1900), 1.0 the sulphur of weight part, 3.0 the calcium oxide of weight part, 0.6 weight part ziram, 1.2 weight part 1, the 2-ethylene thiourea, 0.8 weight part tetramethyl-thiuram disulfide and 1.5 weight part 2-mercaptobenzothiazoles add in the above-mentioned rubber master batch that obtains, in the glue machine that turns over (production of Sichuan Ya Xi rubber and plastic equipment company limited) of 550mm, under 70 ℃ temperature, carry out two-stage mixing 6 minutes to mixing, with this rubber unvulcanizate with the thickness thin-pass of 0.2mm three times.
Be 15MPa at pressure on the vulcanizer of 50T then, temperature is sulfuration 12 minutes under 160 ℃ the condition, and making thickness is the ethylene-propylene-diene monomer film of 2mm.
Embodiment 3
Terpolymer EP rubber (EPDM8340A with 100 weight parts, Holland DSM), 80 parts by weight of carbon black (N550, the Shanghai Cabot), the ZnO of the potter's clay of the water-ground limestone of 60 weight parts, 50 weight parts, 8 weight parts is (homemade, purity 99.7%), the softening agent paraffin oil (2280 of the stearic acid of 2 weight parts and 80 weight parts, U.S.'s SUN) mixes, obtain mixture.
With the above-mentioned mixture that obtains in the Banbury mixer of 50L (Shanghai one hundred great company limited produces), under 150 ℃, carry out one section mixing about 6 minutes, placed 24 hours, obtain rubber master batch.
With 0.8 weight part zinc salt of 2 mercaptobenzimidazole (Huangyan, Zhejiang chemical industry three factories, MB), 0.4 weight part Microcrystalline Wax (Britain asto, Okerin1900), 1.5 the sulphur of weight part, 8.0 the calcium oxide of weight part, 0.6 weight part ziram, 1.2 weight part zinc dibutyl dithiocarbamate, 0.4 weight part tetramethyl-thiuram disulfide, 0.5 weight part N, N-di-n-butyl thiocarbamide, 1.0 weight part 2-mercaptobenzothiazole and four sulfurations (1 of 1.0 weight parts, the 5-pentylidene) thiuram adds in the above-mentioned rubber master batch that obtains, in the glue machine that turns over (production of Sichuan Ya Xi rubber and plastic equipment company limited) of 550mm, under 65 ℃ temperature, carry out two-stage mixing 4 minutes to mixing, with this rubber unvulcanizate with the thickness thin-pass of 0.2mm three times.
Be 15MPa at pressure on the vulcanizer of 50T then, temperature is sulfuration 10 minutes under 180 ℃ the condition, and making thickness is the ethylene-propylene-diene monomer film of 2mm.
Embodiment 4
Prepare the ethylene-propylene-diene monomer film according to the method for describing among the embodiment 2, different is that the additive 2-sulfydryl benzo mew that adds is 1.2 weight parts, OKERIN 1900 (Britain asto) 0.8 weight part.
Embodiment 5
Prepare the ethylene-propylene-diene monomer film according to the method for describing among the embodiment 1, different is that the additive that adds is 2-sulfydryl benzo mew 1.6 weight parts, OKERIN 1900 (Britain asto) 0.8 weight part.
Performance test
1, test is to corrosion of metal
Test according to the method for describing in the QC/T639-2004 appendix A.
The sample that the ethylene-propylene-diene monomer film is tailored into 20mm * 10mm * 2mm, the electrolysis copper coin that sample and 0.5mm is thick contacts, and applies and is not less than 0.022N/mm
2Pressure.Whole assembly is placed in the baking oven that meets GB/T 3512-2001,24 hours following storage periods of experimental temperature of 100 ± 2 ℃.The standard of test is estimated by following standard.
Automobile is as shown in table 1 with rubber weather strip corrodibility standard among the automobile industry standard QC/T 639-2004:
Table 1
| Rank | Describe |
| 1 grade | Do not become black |
| 2 grades | Slight tempering color |
| 3 grades | The severe tempering color |
| 4 grades | Become black |
2, test tensile strength (MPa) and elongation at break (%)
Use the omnipotent pulling experiment machine of GP-TS2000S of Gaopin Detection Equipment Co., Ltd., Shenzhen, test according to the method for describing among the GB/T528.
3, test sulfurizing time TC90 and maximum torque MH
Use the equipment (specification is MY-7000-FA) of inscription Yu electronics technology company limited, test according to the method for describing among the GB/T16584, and record vulcanization rate parameter sulfurizing time TC90 and maximum torque MH.
The ethylene-propylene-diene monomer film that embodiment 1-5 and Comparative Examples 1-3 make is tested according to the performance test methods of above-mentioned 1-3, and gained the results are shown in the table 2.
Table 2
| Corrodibility | Tensile strength (MPa) | Elongation at break (%) | ??TC90 | ??MH | |
| Embodiment 1 | 1 grade | ?11.5 | ??508.6 | ??5’46” | ??17.451 |
| Comparative Examples 1 | 4 grades | ?13.5 | ??435.8 | ??4’18” | ??20.483 |
| Comparative Examples 2 | 2 grades | ?12.6 | ??488.6 | ??4’52” | ??19.354 |
| Comparative Examples 3 | 3 grades | ?12.8 | ??465.3 | ??4’38” | ??19.667 |
| Embodiment 2 | 2 grades | ?13.4 | ??467.2 | ??4’22” | ??18.724 |
| Embodiment 3 | 2 grades | ?13.2 | ??471.3 | ??4’24” | ??18.253 |
| Embodiment 4 | 1 grade | ?13.2 | ??475.6 | ??4’28” | ??18.215 |
| Embodiment 5 | 1 grade | ?10.8 | ??562.4 | ??6’48” | ??16.286 |
In the last table 2, the mechanical property of the elastomeric material that tensile strength and elongation at break reflection sulfuration are later, the high more use properties of tensile strength is good more, should be controlled at 250%-550% according to QC/T 639-2004 elongation at break; The processing characteristics of sulfurizing time TC90 and maximum torque MH reflection unvulcanized rubber material, TC90 is short more, and tooling cost is low more, and maximum torque MH is big more, and cross-linking density is high more, and mechanical property is good more.
From the data of embodiment 1-5 and Comparative Examples 1-3 as can be seen, add the corrosion resistance nature that additive benzimidazoles compound and paraffinic hydrocarbons can significantly improve rubber among the embodiment 1-6.
Compare with embodiment 1 in the Comparative Examples 2,3, use benzimidazoles compound or paraffinic hydrocarbons that the vulcanization of rubber is only had certain restraining effect separately.Therefore, when adopting additive in the present invention, needs adopt effective ratio stack of benzimidazoles compound and paraffinic hydrocarbons to solve the corrodibility and the comprehensive mechanical performance problem of elastomeric material.
Embodiment 2-5 has solved the corrodibility and the comprehensive mechanical performance problem of terpolymer EP rubber effectively by the additive of use different content with different proportionings.As embodiment 4 resulting ethylene propylene diene monomer (EPDM) materials, keeping under the situation that sulfurizing time TC90 is less and maximum torque MH is bigger, the corrodibility test result is 1 grade, makes that this elastomeric material mechanical property is good, has erosion resistance simultaneously.This ethylene propylene diene monomer (EPDM) material can be widely used in automobile, electric wire, the field of high requests such as electronic devices and components.
Claims (9)
1, a kind of ethylene propylene diene monomer (EPDM) material, the product that this material is mixing for the mixture that will contain terpolymer EP rubber, sulphur and sulfur containing promoter and sulfuration forms, it is characterized in that described mixture also contains additive, described additive contains benzimidazoles compound and paraffinic hydrocarbons.
2, ethylene propylene diene monomer (EPDM) material according to claim 1, wherein, in described mixture, based on 100 weight part terpolymer EP rubbers, the content of sulphur is the 0.5-2 weight part, the content of described sulfur containing promoter is the 3-10 weight part, and content of additive is the 0.5-4 weight part, and the weight ratio of benzoglyoxaline and paraffinic hydrocarbons is 1-2: 1.
3, ethylene propylene diene monomer (EPDM) material according to claim 1 and 2, wherein, described benzimidazoles compound is zinc salt of 2 mercaptobenzimidazole and/or 2-mercaptobenzimidazole; The carbonatoms of described paraffinic hydrocarbons is 23-36; Described sulfur containing promoter is one or more in thiuram type accelerator, thiazole accelerator, Thiourea accelerator and the dithiocar-bamate promotor.
4, ethylene propylene diene monomer (EPDM) material according to claim 1, wherein, described mixture also contains softening agent, described softening agent is the paraffinic base softening oil, the paraffinicity of described paraffinic base softening oil is greater than 70 weight %, and aromaticity content is less than 1 weight %, and flash-point is higher than 200 ℃.
5, ethylene propylene diene monomer (EPDM) material according to claim 4, wherein, based on the terpolymer EP rubber of 100 weight parts, the content of described softening agent is the 50-80 weight part.
6, according to claim 1 or 4 described ethylene propylene diene monomer (EPDM) materials, wherein, described mixture also contains calcium oxide, and based on the terpolymer EP rubber of 100 weight parts, the content of described calcium oxide is the 3-8 weight part.
7, ethylene propylene diene monomer (EPDM) material according to claim 6, wherein, described mixture also contains one or more in zinc oxide, stearic acid, carbon black and the filler, and described filler is one or more in lime carbonate, potter's clay and the talcum powder.
8, ethylene propylene diene monomer (EPDM) material according to claim 7, wherein, based on the terpolymer EP rubber of 100 weight parts, the content of zinc oxide is the 5-10 weight part, stearic content is the 1-2 weight part, and the content of carbon black is the 60-120 weight part, and the content of described filler is the 30-110 weight part.
9, ethylene propylene diene monomer (EPDM) material according to claim 1, wherein, under the described mixing 60-150 of being included in of mixture ℃ the temperature that will contain terpolymer EP rubber, sulphur and sulfur containing promoter mixing 8-18 minute; Described sulfuration comprises mixture heating up to 150-180 ℃ of sulfuration 5-15 minute.
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| CN105400082A (en) * | 2015-11-13 | 2016-03-16 | 江苏宝利来斯橡胶有限公司 | Improved highly-filled ethylene propylene diene monomer master batch |
| CN109320853A (en) * | 2017-08-01 | 2019-02-12 | 比亚迪股份有限公司 | Ethylene propylene diene rubber and preparation method thereof |
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