CN1775845A - Rubber product and its preparing process - Google Patents
Rubber product and its preparing process Download PDFInfo
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- CN1775845A CN1775845A CN 200510062013 CN200510062013A CN1775845A CN 1775845 A CN1775845 A CN 1775845A CN 200510062013 CN200510062013 CN 200510062013 CN 200510062013 A CN200510062013 A CN 200510062013A CN 1775845 A CN1775845 A CN 1775845A
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- aging agent
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 102
- 239000005060 rubber Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title abstract description 8
- 230000008569 process Effects 0.000 title description 2
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 26
- 229920001897 terpolymer Polymers 0.000 claims abstract description 26
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 18
- 239000000194 fatty acid Substances 0.000 claims abstract description 18
- 229930195729 fatty acid Natural products 0.000 claims abstract description 18
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 18
- 238000004073 vulcanization Methods 0.000 claims abstract description 15
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008117 stearic acid Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims description 46
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 24
- 235000019241 carbon black Nutrition 0.000 claims description 19
- 239000006229 carbon black Substances 0.000 claims description 19
- 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 description 15
- 238000007670 refining Methods 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 12
- QXQOIUZWCJIMEY-UHFFFAOYSA-N 2,2-bis(tert-butylperoxy)-3-methylheptane Chemical compound CCCCC(C)C(C)(OOC(C)(C)C)OOC(C)(C)C QXQOIUZWCJIMEY-UHFFFAOYSA-N 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000003921 oil Substances 0.000 claims description 11
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000005987 sulfurization reaction Methods 0.000 claims description 8
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 17
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 239000004606 Fillers/Extenders Substances 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 13
- 238000010074 rubber mixing Methods 0.000 description 10
- 230000032683 aging Effects 0.000 description 7
- 239000002932 luster Substances 0.000 description 6
- OTEKOJQFKOIXMU-UHFFFAOYSA-N 1,4-bis(trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=C(C(Cl)(Cl)Cl)C=C1 OTEKOJQFKOIXMU-UHFFFAOYSA-N 0.000 description 5
- 229920002943 EPDM rubber Polymers 0.000 description 5
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 235000014692 zinc oxide Nutrition 0.000 description 5
- ZUBNXRHITOZMOO-UHFFFAOYSA-N zinc;octadecanoic acid;oxygen(2-) Chemical compound [O-2].[Zn+2].CCCCCCCCCCCCCCCCCC(O)=O ZUBNXRHITOZMOO-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
Abstract
The invention relates to a method to manufacture rubber products that belongs to chemical field. It is made up of ethylene propylene terpolymer, zenc oxide, stearic acid, charcoal black, anti-aging agent, extender oil, fatty acid amide, and vulcanization accelerator. The stearic acid would form a inertance film on ther surface of the rubber products to avoid the rubber taking reaction with the contacting material. The surface color could not vary when contacting with other material. And the rubber products would produce self- lubricating while installing.
Description
Technical field
The present invention relates to a kind of rubber item and preparation technology thereof, belong to chemical technology field.
Background technology
Rubber is a kind of resilient hydrocarbon polymer polymerization, exists without adding the form of man-hour with emulsion, can be divided into natural rubber and asynthetic rubber.And terpolymer EP rubber is a kind of among the asynthetic rubber, terpolymer EP rubber has ageing resistance, chemical-resistant, lower temperature resistance and dielectric properties preferably, so purposes is more extensive, be mainly used in fields such as building construction, electric wire, automotive industry.The building construction aspect is mainly used in the roof individual layer coiled material etc. that discharges water; The electric wire aspect is mainly used in civilian and output line, electric wire for building, mine cable, used in nuclear power station cable, automobile ignition wire, control and signal cable etc. commercial building; The automotive industry aspect, be mainly used in the water tank of automobile, truck and bus tyre and non-tyre element such as automobile and parts, wiper bar, base plate and the endless tube etc. on heating hose, sealed strip, string rubber, vehicle body and chassis, become the big kind synthetic rubber that is only second to styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber and polyisoprene rubber.
And the effect of rubber ingredients in the terpolymer EP rubber industry is conspicuous.If there is not diversified auxiliary agent, vertical have many, good again rubber can not be processed into needed various rubber and plastics in industrial and agricultural production, national defense construction and the people's lives again.Rubber ingredients mainly contain and prevent that rubber item is aging, improve some mechanical property, the function that extends working time, and rubber ingredients mainly contain anti-aging agent, vulcanizing agent, vulcanization accelerator, dispersion agent, coupling agent etc.Once the someone applied for that name was called the patent of " in-situ modified black-reinforced terpolymer EP rubber and preparation method thereof " (200410022841.9).It is to be properties-correcting agent to contain multi-functional monomer, directly joins and contains in the sooty terpolymer EP rubber, utilizes the active group in the monomer to combine with the active function groups formation chemical bond of carbon blacksurface on the one hand; On the other hand, utilize unsaturated double-bond and rubber molecular chain in the monomer to react,, improve the dispersion state of carbon black in rubber matrix though this patent application utilizes above mode of action raising organic polymer and the interface avidity between the mineral filler.But the prepared rubber item of this patent application can cause other material color and luster when not only contacting with other material variation as with can cause variable color after the automobile metal lacquer contacts; In addition because the lubricity of himself is not enough, so be difficult for assembling; The someone expected adopting lubricating oil to improve lubricity such as Chinese patent application (99112640.8) the Ethylene Propylene Terpolymer high temperature high voltage resistant synthetic rubber and the manufacture method thereof of rubber item afterwards.This patent application relates to a kind of Ethylene Propylene Terpolymer high temperature high voltage resistant synthetic rubber and manufacture method thereof, and this patent application adopts terpolymer EP rubber, sulphur, DCP, zinc oxide, stearic acid, high wear-resistant carbon black, spray carbon black, anti-agent RD, a certain amount of proportioning of paraffin wet goods to form through a plurality of steps are mixing.Though in this patent application, add paraffin wet goods lubricating oil class,, thereby cause performance decrease because rubber item to lubricating oil swelling can take place.
Summary of the invention
The rubber parts that the present invention is directed to prior art contacts with other material that the back takes place that chemical reaction or physical mappings cause the variation of other material color and luster and because to the use of lubricating oil, thereby cause the shortcoming of rubber parts performance decrease, a kind of rubber item and preparation technology thereof are provided; Can not cause the variation of other material color and luster when using the made rubber item of this raw material and technology not only to contact but also when assembling, can produce self-lubricating, be easy to assembling with other material.
Above-mentioned purpose of the present invention solves by the following technical programs: a kind of rubber item is characterized in that it comprises the following weight proportion raw material:
100 parts of terpolymer EP rubbers
4～6 parts in zinc oxide
0.5～1.5 part of stearic acid
50～150 parts of carbon blacks
1～4 part in anti-aging agent
10～70 parts of extending oils
0.1～5 part of fatty acid amide
0.2～5 part of vulcanization accelerator
1～15 part of dimethyl bis(t-butylperoxy) hexane.
Wherein fatty acid amide can migrate to surface formation one deck inert film of rubber product, make rubber be in contact with it thing chemical reaction does not take place, and dimethyl bis(t-butylperoxy) hexane can not only make the crosslinked effect of playing vulcanizing agent of rubber generation molecule, and price is more cheap, has saved the cost of rubber item greatly; Extending oil can increase the plasticity-of rubber for paraffin oil series, adjusts the hardness of sizing material, improves the cryogenic subduing flexibility energy of rubber, and the calendering that is easy to sizing material extrudes.
As preferably, the optimization weight proportion of described raw material is:
100 parts of terpolymer EP rubbers
5 parts in zinc oxide
1 part of stearic acid
60～120 parts of carbon blacks
2～3 parts in anti-aging agent
20～60 parts of extending oils
0.1～3 part of fatty acid amide
0.2～5 part of vulcanization accelerator
2～10 parts of dimethyl bis(t-butylperoxy) hexanes.
In above-mentioned rubber item, described vulcanization accelerator is one or both in 0.2～2.5 part of 0.4～2.5 part of following dibenzothiazyl disulfide by weight ratio or the 2-benzothiazolyl mercaptan.Described dibenzothiazyl disulfide is called for short DM, and the 2-benzothiazolyl mercaptan is called for short M, and they are catalytic species of vulcanizing agent, can quicken the sulfidation of rubber.
In above-mentioned rubber item, also contain weight proportion in the described raw material and be 2～4 parts dicumyl peroxide.Dicumyl peroxide is called for short DCP, can set up curing system to rubber with dimethyl bis(t-butylperoxy) hexane and dibenzothiazyl disulfide or 2-benzothiazolyl mercaptan, improves the sulfuration efficient of rubber greatly.
In above-mentioned rubber item, described anti-aging agent is one or both among anti-aging agent RD or the anti-aging agent MD; Anti-aging agent RD is the anti-aging agent of anti-light, oxygen effect; Anti-aging agent MD improves the resistivity of rubber to temperature.
The preparation technology of above-mentioned rubber item, can carry out according to the following steps:
(1) refining glue: with 100 parts of rubbers, 4～6 parts in the zinc oxide of terpolymer EP rubber, 0.5～1.5 part of stearic acid, 60～120 parts of carbon blacks, extending oil carries out banburying for 10～70 parts on Banbury mixer, and the temperature of banburying is 100～140 ℃, and the banburying time is 6～8min; Add 1～4 part in anti-aging agent with above-mentioned through the terpolymer EP rubber after the banburying, 0.1～5 part of fatty acid amide, 0.2～5 part of vulcanization accelerator, vulcanizing agent is opened refining for 1～20 part in mill, and the temperature of opening refining is 50～80 ℃, and opening the refining time is 15～20min;
(2) place: above-mentioned terpolymer EP rubber behind rolled-to-death rubber under the condition of 20～40 ℃ of temperature, is parked greater than 20 hours;
(3) sulfuration: be to vulcanize under 160～200 ℃ the condition in temperature with the terpolymer EP rubber after the above-mentioned placement, curing time is 10～40 minutes, promptly gets rubber item after the sulfuration.
As preferably, the temperature of banburying is 110～130 ℃ in the described step (1), and the time of banburying is 7min; The temperature of opening refining is 60～70 ℃, and the time of opening refining is 20min.
As preferably, the sulfurized temperature is 170 ℃ in the described step (3), and the sulfurized time is 15 minutes.
General rubber product causes the color and luster of other material to change because chemical reaction takes place in their contact backs or the physics infiltration causes, the present invention will consider this principle when selecting rubber raw materials, eliminated the defective of prior art by cooperatively interacting of various raw materials, make the obtained rubber item of the present invention with chemical reaction or physics infiltration do not take place after other materials contact; In addition because vulcanizing agent and other rubber ingredients incomplete reaction, the chemical free radical of these materials will carry out the combination of free radical to other material, thereby cause the variation of color and luster, in the present invention the rubber item forming process is carried out strict control, control cure conditions especially, made the sulfurized degree make various vulcanizing agents and other rubber ingredients be able to complete chemical reaction.
When rubber item assembled, prior art generally adopted lubricant, but rubber to lubricant swelling can take place, thereby caused performance decrease.The inventor is by the discovery that studies for a long period of time: adopt some special lipids as additive, the effect of starting automatic demoulding and can form a kind of lubricant film at product surface after sulfuration when sulfuration is easy to the operation of next procedure.
Therefore, the present invention has the following advantages:
1, can not cause the variation of other material color and luster after utilizing rubber item that raw material of the present invention and production technique make and other material contacting;
2, the rubber product made of the rubber item that utilizes raw material of the present invention and production technique to make can produce self-lubricating when assembling, is easy to assembling, does not need to add in addition assembling lubricating oil.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail; But the present invention is not limited to these embodiment.
Embodiment 1 adds zinc oxide, stearic acid, carbon black according to the raw material of table 1 in the Ethylene Propylene Terpolymer rubber, banburying on sealed rubber mixing machine, 100 ℃ of the temperature of banburying; It is mixing on opening rubber mixing machine to add anti-aging agent, fatty acid amide, vulcanization accelerator, vulcanizing agent then, 60 ℃ of mixing temperature; , vulcanized 20 minutes at 170 ℃ after 25 hours 20 ℃ of placements mixing back.The physical and mechanical properties of the rubber item of gained is listed in table 2.
Table 1: basic raw material
| Raw material | Raw material 1 (g) | Raw material 2 (g) |
| The carbon black-filled oily anti-aging agent RD fatty acid amide of ethylene propylene diene rubber zinc oxide stearic acid | 100 4 0.5 50 60 1 0.1 | 100 5 1 100 50 2 1 |
| DM (curing hexichol thiazole) M (2-benzothiazolyl mercaptan) DCP (dicumyl peroxide) PX14 (dimethyl bis(t-butylperoxy) hexane) | 0 0 0 15 | 0.4 2.5 0 10 |
Table 2: the performance of rubber item
| Performance Detection | Raw material 1 | Raw material 2 |
| The hot air aging of hardness intensity elongation is to paint inertia (nondiscoloration) | 400% 175 ℃/170 ℃/24h of 94h of 45 degree 15Mpa | 450% 175 ℃/170 ℃/26h of 96h of 50 degree 16Mpa |
Embodiment 2 adds zinc oxide, stearic acid, carbon black, extending oil according to the raw material of table 3 in the Ethylene Propylene Terpolymer rubber, banburying on sealed rubber mixing machine, 110 ℃ of the temperature of banburying; It is mixing on opening rubber mixing machine to add anti-aging agent, fatty acid amide, vulcanization accelerator, vulcanizing agent then, 70 ℃ of mixing temperature; , vulcanized 15 minutes at 170 ℃ after 24 hours 25 ℃ of placements mixing back.The physical and mechanical properties of the rubber item of gained is listed in table 4.
Table 3: basic raw material
| Raw material | Raw material 1 (g) | Raw material 2 |
| The carbon black-filled oily age resistor fatty acid amide DM of ethylene propylene diene rubber zinc oxide stearic acid (curing hexichol thiazole) M (2-benzothiazolyl mercaptan) DCP (cumyl peroxide) PX14 (dimethyl bis(t-butylperoxy) hexane) | 100 5 1 100 10 2 2 2.5 0.2 2 10 | 100 6 1.5 150 20 3 3 0.5 2 3 8 |
Table 4: the performance of rubber item
| Raw material 1 | Raw material 2 |
| Performance Detection | ||
| The hot air aging of hardness intensity elongation is to paint inertia (nondiscoloration) | 450% 175 ℃/170 ℃/25h of 97h of 60 degree 17Mpa | 450% 175 ℃/170 ℃/26h of 95h of 65 degree 16Mpa |
Embodiment 3 adds zinc oxide, stearic acid, carbon black, extending oil according to the raw material of table 5 in the Ethylene Propylene Terpolymer rubber, (120 ℃ of the temperature of banburying of banburying on sealed rubber mixing machine; It is mixing on opening rubber mixing machine to add anti-aging agent, fatty acid amide, vulcanization accelerator, vulcanizing agent then, 65 ℃ of mixing temperature; , vulcanized 13 minutes at 180 ℃ after 22 hours 30 ℃ of placements mixing back.The physical and mechanical properties of the rubber item of gained is listed in table 6.
Table 5: basic raw material
| Raw material | Raw material 1 (g) | Raw material 2 (g) |
| The carbon black-filled oily age resistor fatty acid amide DM of ethylene propylene diene rubber zinc oxide stearic acid (curing hexichol thiazole) M (2-benzothiazolyl mercaptan) DCP (cumyl peroxide) PX14 (dimethyl bis(t-butylperoxy) hexane) | 100 4.5 1 60 40 2 3.5 1 1.5 3 5 | 100 5.5 1.5 120 30 2.5 4 2.5 0.5 4 6 |
Table 6: the performance of rubber item
| Performance Detection | Raw material 1 | Raw material 2 |
| The hot air aging of hardness intensity elongation is to paint inertia (nondiscoloration) | 550% 175 ℃/170 ℃/28h of 98h of 55 degree 17Mpa | 500% 175 ℃/170 ℃/30h of 100h of 50 degree 18Mpa |
Embodiment 4 adds zinc oxide, stearic acid, carbon black, extending oil according to the raw material of table 7 in the Ethylene Propylene Terpolymer rubber, banburying on sealed rubber mixing machine, 130 ℃ of the temperature of banburying; Add then anti-aging agent, fatty acid amide, vulcanization accelerator, vulcanizing agent back on the opening rubber mixing machine 35 ℃ place 20 hours after, 190 ℃ of sulfurations 10 minutes.The physical and mechanical properties of the rubber item of gained is listed in table 8.
Table 7: basic raw material
| Raw material | Raw material 1 (g) | Raw material 2 (g) |
| The carbon black-filled oily age resistor fatty acid amide DM of ethylene propylene diene rubber zinc oxide stearic acid (curing hexichol thiazole) M (2-benzothiazolyl mercaptan) DCP (cumyl peroxide) PX14 (dimethyl bis(t-butylperoxy) hexane) | 100 5 1 80 35 3 2.5 1.5 1 3 2 | 100 6 1 100 25 3.5 3 2.5 0.5 3.5 4 |
Table 8: the performance of rubber item
| Performance Detection | Raw material 1 | Raw material 2 |
| The hot air aging of hardness intensity elongation is to paint inertia (nondiscoloration) | 450% 175 ℃/170 ℃/34h of 94h of 65 degree 20Mpa | 400% 175 ℃/170 ℃/32h of 95h of 60 degree 18Mpa |
Embodiment 5 adds zinc oxide, stearic acid, carbon black, extending oil according to the raw material of table 9 in the Ethylene Propylene Terpolymer rubber, banburying on sealed rubber mixing machine, 140 ℃ of the temperature of banburying; It is mixing on opening rubber mixing machine to add anti-aging agent, fatty acid amide, vulcanization accelerator, vulcanizing agent then, 80 ℃ of mixing temperature; , vulcanized 10 minutes at 200 ℃ after 20 hours 40 ℃ of placements mixing back.The physical and mechanical properties of the rubber item of gained is listed in table 10.
Table 9: basic raw material
| Raw material | Raw material 1 (g) | Raw material 2 (g) |
| The carbon black-filled oily age resistor fatty acid amide DM of ethylene propylene diene rubber zinc oxide stearic acid (curing hexichol thiazole) M (2-benzothiazolyl mercaptan) DCP (cumyl peroxide) PX14 (dimethyl bis(t-butylperoxy) hexane) | 100 5 1.5 120 70 3 4 2.5 0.5 4 3 | 100 6 1.5 150 55 4 5 3 0.5 5 5 |
10: the performance of rubber item
| Performance Detection | Raw material 1 | Raw material 2 |
| The hot air aging of hardness intensity elongation is to paint inertia (nondiscoloration) | 500% 175 ℃/170 ℃/24h of 96h of 65 degree 15Mpa | 450% 175 ℃/170 ℃/24h of 95h of 65 degree 16Mpa |
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made detailed explanation and has quoted some specific exampless as proof, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.
Claims (9)
1, a kind of rubber item is characterized in that, it comprises the following weight proportion raw material:
100 parts of terpolymer EP rubbers
4～6 parts in zinc oxide
0.5～1.5 part of stearic acid
50～150 parts of carbon blacks
1～4 part in anti-aging agent
10～70 parts of extending oils
0.1～5 part of fatty acid amide
0.2～5 part of vulcanization accelerator
1～15 part of dimethyl bis(t-butylperoxy) hexane.
2, rubber item according to claim 1 is characterized in that, the optimization weight proportion of described raw material is:
100 parts of terpolymer EP rubbers
5 parts in zinc oxide
1 part of stearic acid
60～120 parts of carbon blacks
2～3 parts in anti-aging agent
20～60 parts of extending oils
0.1～3 part of fatty acid amide
0.2～5 part of vulcanization accelerator
2～10 parts of dimethyl bis(t-butylperoxy) hexanes.
3, rubber item according to claim 1 and 2 is characterized in that, described vulcanization accelerator is one or both in 0.2～2.5 part of 0.4～2.5 part of following dibenzothiazyl disulfide by weight ratio or the 2-benzothiazolyl mercaptan.
4, rubber item according to claim 1 and 2 is characterized in that, also contains weight proportion in the described raw material and be 2～4 parts dicumyl peroxide.
5, rubber item according to claim 1 and 2 is characterized in that, described anti-aging agent is one or both among anti-aging agent RD or the anti-aging agent MD.
6, rubber item according to claim 4 is characterized in that, described anti-aging agent is one or both among anti-aging agent RD or the anti-aging agent MD.
7, a kind of preparation technology as each described rubber item of claim 1 to 6 is characterized in that, this technology is to carry out according to the following steps:
(1) refining glue: with 100 parts of rubbers, 4～6 parts in the zinc oxide of terpolymer EP rubber, 0.5～1.5 part of stearic acid, 60～120 parts of carbon blacks, extending oil carries out banburying for 10～70 parts on Banbury mixer, and the temperature of banburying is 100～140 ℃, and the banburying time is 6～8min; Add 1～4 part in anti-aging agent with above-mentioned through the terpolymer EP rubber after the banburying, 0.1～5 part of fatty acid amide, 0.2～5 part of vulcanization accelerator, vulcanizing agent is opened refining for 1～20 part in mill, and the temperature of opening refining is 50～80 ℃, and opening the refining time is 15～20min;
(2) place: above-mentioned terpolymer EP rubber behind rolled-to-death rubber under the condition of 20～40 ℃ of temperature, is parked greater than 20 hours;
(3) sulfuration: be to vulcanize under 160～200 ℃ the condition in temperature with the terpolymer EP rubber after the above-mentioned placement, curing time is 10～40 minutes, promptly gets rubber item after the sulfuration.
8, the preparation technology of rubber item according to claim 7 is characterized in that, the temperature of banburying is 110～130 ℃ in the described step (1), and the time of banburying is 7min; The temperature of opening refining is 60～70 ℃, and the time of opening refining is 20min.
9, the preparation technology of rubber item according to claim 7 is characterized in that, the sulfurized temperature is 170 ℃ in the described step (3), and the sulfurized time is 15 minutes.
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