CN103183874B - Rubber composition for sheet feeding roller and sheet feeding roller - Google Patents
Rubber composition for sheet feeding roller and sheet feeding roller Download PDFInfo
- Publication number
- CN103183874B CN103183874B CN201210587612.6A CN201210587612A CN103183874B CN 103183874 B CN103183874 B CN 103183874B CN 201210587612 A CN201210587612 A CN 201210587612A CN 103183874 B CN103183874 B CN 103183874B
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- Prior art keywords
- paper
- feed roll
- mass parts
- rubber
- tenderizer
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 99
- 239000005060 rubber Substances 0.000 title claims abstract description 99
- 239000000203 mixture Substances 0.000 title abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 26
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000003208 petroleum Substances 0.000 claims description 17
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 13
- 239000005977 Ethylene Substances 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- 239000012188 paraffin wax Substances 0.000 claims description 10
- 239000005864 Sulphur Substances 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 42
- 229920002943 EPDM rubber Polymers 0.000 description 37
- 238000013329 compounding Methods 0.000 description 32
- 239000000463 material Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 14
- 238000004073 vulcanization Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 239000000654 additive Substances 0.000 description 7
- 238000011049 filling Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- -1 aromatic series series organic compound Chemical class 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 229920002521 macromolecule Polymers 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000010734 process oil Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 229960001866 silicon dioxide Drugs 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 235000014692 zinc oxide Nutrition 0.000 description 4
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- 235000010724 Wisteria floribunda Nutrition 0.000 description 3
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- 239000013536 elastomeric material Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010068 moulding (rubber) Methods 0.000 description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
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- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical group CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical group CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 241000863032 Trieres Species 0.000 description 1
- 239000005870 Ziram Substances 0.000 description 1
- DWJNDSXPHLWWNR-UHFFFAOYSA-N [Cl].C=CC=CC Chemical group [Cl].C=CC=CC DWJNDSXPHLWWNR-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 229940024545 aluminum hydroxide Drugs 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229960003563 calcium carbonate Drugs 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- CSNJTIWCTNEOSW-UHFFFAOYSA-N carbamothioylsulfanyl carbamodithioate Chemical compound NC(=S)SSC(N)=S CSNJTIWCTNEOSW-UHFFFAOYSA-N 0.000 description 1
- 229940105289 carbon black Drugs 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 229920006235 chlorinated polyethylene elastomer Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 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 description 1
- 125000002897 diene group Chemical group 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229960001708 magnesium carbonate Drugs 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Electrophotography Configuration And Component (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a rubber composition for a sheet feeding roller and sheet feeding roller. The sheet feeding roller rubber composition at least contains a polymer component; in a dynamic viscoelasticity temperature dispersion measurement, said sheet feeding roller rubber composition has a loss tangent maxima tan[delta] max of 1.1 or less, when the loss tangent tan[delta] reaches a maximum, the temperature Tmax is below -40 DEG C, and a dynamic elastic modulus E1 (22 DEG C) is 2.1MPa or less.
Description
Technical field
The present invention relates to rubber combination for paper-feed roll (below sometimes referred to as " rubber combination ") and there is the paper-feed roll of the rubber layer that comprises rubber combination.
Background technology
The paper-feed roll using in the business automation equipments such as electrostatic duplicating machine, laser printer or facsimile recorder or ATM (automatic teller machine) etc., is used natural rubber (NR), urethanes, ethylene, propylene-diene copolymers (being designated as below " EPDM "), poly-norbornene rubber, silicon rubber or chlorinated polyethylene rubber etc.Wherein, from reason cheap, that have excellent weather resistance, consider, use EPDM more.This paper-feed roll requires the retentivity of frictional coefficient, follows the variation of paper type, and this requires day by day to improve.Technology as developing up to now, can list technology for example shown below.
In Japanese kokai publication hei 10-279115 communique, recorded a kind of rubber combination, it usings EPDM rubber as in main component, the scope of JISA hardness in 20～30 degree, and losstangenttanδ is in 0.02～0.035 scope.
In Japanese kokai publication hei 09-254275 communique, recorded the rubber rollers that the rubber combination that contains oil-filled EPDM rubber vulcanizes, moulding forms.In this rubber combination, the compounding amount of compounding weighting agent or weighting agent is not below 15 mass parts with respect to rubber constituent 100 mass parts of rubber combination.
In Japanese kokai publication hei 08-244139 communique, recorded and will contain EPDM and be added with the rubber combination sulfuration of tenderizer, the rubber rollers that moulding forms.In this rubber rollers, the ratio of the aromatic series series organic compound containing in tenderizer is 1～20 quality %.In addition, in this communique, recorded rubber rollers after the sulfuration losstangenttanδ (0 ℃) at 0 ℃ with 50 ℃ at losstangenttanδ (50 ℃) than tan δ (0 ℃)/tan δ (50 ℃) preferably in 0.7～2.0 scope.
In TOHKEMY 2001-171851 communique, recorded a kind of paper conveyance member elastomeric material, its dynamic elastic modulus E under the condition of 25 ℃ of temperature, vibrational frequency 15Hz, elongation 15 ± 2% ' be 0.9～1.9MPa.
In Japanese kokai publication hei 07-242779 communique, recorded a kind of paper feed roller rubber combination, its using molecular-weight average as more than 300,000 and ethene containing ratio be 60～80 quality % EP (ethylene, propylene) is that rubber is as main component.In this rubber combination, with respect to the EP of 100 mass parts, be rubber, compounding tenderizer in the scope of 90～190 mass parts, and the simple substance sulfur content containing is suppressed in the scope below 0.2 quality % and carries out compounding.
In Japanese kokai publication hei 10-194512 communique, recorded a kind of low-hardness rubber composition, its be using the mixed rubber of oil-filled EPDM or oil-filled EPDM and non-oil-filled EPDM as the rubber combination of main component in the low molecular material of compounding and thermoplastic macromolecule material form.In this communique, recorded following content.This low molecular material has 5 * 10 at 100 ℃
5viscosity below centipoise.Filling oil and the difference of the solubility parameter value of thermoplastic macromolecule material of the poor and oil-filled EPDM of the solubility parameter value of low molecular material and thermoplastic macromolecule material are below 3.Filling oil and the difference of the solubility parameter value of the rubber constituent of rubber combination of the poor and oil-filled EPDM of the solubility parameter value of the rubber constituent of low molecular material and rubber combination are below 4.Total compounding amount of the filling oil of low molecular material and oil-filled EPDM is 10～200 mass parts with respect to rubber constituent 100 mass parts in rubber combination.The compounding amount of thermoplastic macromolecule material is 2～40 mass parts with respect to rubber constituent 100 mass parts in rubber combination.
Summary of the invention
Yet above-mentioned technology is difficult to provide the paper-feed roll of the retentivity excellence of frictional coefficient.For example, as the technology of recording in Japanese kokai publication hei 10-194512 communique, if use low molecular material, can expect to improve the retentivity of the frictional coefficient of paper-feed roll.Yet, known according to the inventor's research, as the technology that Japanese kokai publication hei 10-194512 communique is recorded compounding tenderizer and in order to keep low molecular material in rubber combination during compounding thermal plastic high polymer, owing to causing second-order transition temperature to raise, be therefore difficult to provide the paper-feed roll of the retentivity excellence of frictional coefficient.
The present invention carries out in view of the above problems, and its object is, the paper-feed roll of the retentivity excellence of frictional coefficient can be provided, and the paper-feed roll rubber combination of the paper supply conveyance performance long term stabilization that can realize paper-feed roll is provided for this reason.
Rubber combination of the present invention at least contains component of polymer, described rubber combination is in the temperature dispersion of dynamic viscoelastic is measured, the maximum value of losstangenttanδ (being designated as below " tan δ max ") is below 1.1, temperature when losstangenttanδ reaches very big (being designated as below " Tmax ") is for below-40 ℃, and dynamic elastic modulus E 1 (22 ℃) is below 2.1MPa.It should be noted that, dynamic elastic modulus E 1 (22 ℃) refers to the dynamic elastic modulus E 1 of measuring at 22 ℃ of temperature.
Component of polymer is preferably usingd EPDM as main component.Herein, " using EPDM as main component " and refer to component of polymer and contain EPDM more than 80 quality %.Preferably EPDM contains 60 quality % above and the ethylene unit below 72 quality %.
Rubber combination of the present invention preferably contains the tenderizer of 70 mass parts above and below 150 mass parts with respect to the component of polymer of 100 mass parts.
The petroleum that tenderizer is preferably paraffin series coordinates at least one in oil and hydrocarbon system synthetic oil.In addition, tenderizer preferably the kinematic viscosity at 40 ℃ be 10mm
2above and the 500mm of/s
2below/s.While using the petroleum of paraffin series to coordinate oil, more preferably the kinematic viscosity at 40 ℃ is 10mm
2above and the 110mm of/s
2the petroleum of the paraffin series below/s coordinates oil.Herein, the kinematic viscosity of the tenderizer at 40 ℃ is measured according to JIS K2283 (crude oil and petroleum product-movement viscosity test method).
Rubber combination of the present invention preferably contains the sulphur of 1 mass parts above and below 6 mass parts as linking agent with respect to the component of polymer of 100 mass parts.
Paper-feed roll of the present invention has the rubber layer that comprises rubber combination of the present invention.Herein, paper-feed roll not only can conveyance paper, can also conveyance OHP (overhead projector) thin slice, the various sheet materials such as plastic tab.
Above and other objects of the present invention, feature, form and advantage, understand and become apparent by following detailed description related to the present invention by reference to enclosed accompanying drawing.
Accompanying drawing explanation
Fig. 1 means the vertical view of a mode of paper-feed roll of the present invention.
Fig. 2 is the figure that the measuring method of frictional coefficient is described.
Fig. 3 means the figure of the relation of tan δ max in embodiment and comparative example and Tmax.
Fig. 4 means the figure of dynamic elastic modulus E 1 (22 ℃) in embodiment and comparative example and the relation of tan δ max.
Fig. 5 means the figure of dynamic elastic modulus E 1 (22 ℃) in embodiment and comparative example and the relation of Tmax.
Fig. 6 is the figure of the relation of research temperature and losstangenttanδ.
Embodiment
Rubber combination of the present invention and paper-feed roll are below shown.It should be noted that, the present invention is not limited to item shown below.
< rubber combination >
Rubber combination of the present invention forms the rubber layer of paper-feed roll, and in the temperature dispersion of dynamic viscoelastic is measured, tan δ max is 1.1 below, Tmax is below-40 ℃, and dynamic elastic modulus E 1 (22 ℃) is below 2.1MPa.Thus, the paper-feed roll of the retentivity excellence of frictional coefficient can be provided, thereby the long term stabilization of the paper supply conveyance performance of paper-feed roll can be realized.Herein, the retentivity of the frictional coefficient of paper-feed roll " excellent " is even if refer to the frictional coefficient that after the sheet material of conveyance regulation number paper-feed roll also maintains regulation.
All the time, the viscoelastic property of known rubber is rubbing characteristics, wear resistant to be brought to the important factor of impact.Yet, be only conceived to the viscoelastic property of the frequency field (1～hundreds of Hzs) suitable with 1 distortion of the every rotation of paper-feed roll 1 time in business automation equipment etc. in the past.Conventionally using the humidity province of business automation equipment, although controlled frequency is the viscoelastic property in 1～hundreds of Hz region, raising rubbing characteristics, wear resistant are shown to effect to a certain degree, for the retentivity of frictional coefficient, can not improve sufficient effect.Therefore, the inventor considers, paper-feed roll except the vibration of the frequency suitable with the every rotation of roller 1 time distortion 1 time, the vibration that also produces the frequency field (hundreds of～millions of Hz) higher than this, whether the viscoelastic property in this high frequency region also can affect the retentivity of frictional coefficient.But common determination of viscoelasticity machine can not be measured the viscoelastic property in this high frequency region.Therefore, use the consideration method of known time temperature reducibility, with the viscoelastic property of low-temperature region, replace the viscoelastic property in high frequency region.Carry out experimental result judgement, in the temperature dispersion of dynamic viscoelastic is measured, if be used as that the tan δ max of the viscoelastic property of low-temperature region is below 1.1, Tmax is following for-40 ℃ and the dynamic elastic modulus Es 1 (22 ℃) of room temperature region are made the rubber layer of paper-feed roll for the rubber combination below 2.1MPa, can form the paper-feed roll of the retentivity excellence of frictional coefficient.
Tan δ max means that the temperature dispersion by dynamic viscoelastic measures the maximum value of the losstangenttanδ that obtains and the figure of the relation of temperature, and Tmax is temperature when tan δ gets maximum value (tan δ max) in the figure of relation of the losstangenttanδ that obtains in the temperature dispersion mensuration representing by dynamic viscoelastic and temperature.Tan δ max is below 1.1, is preferably below 0.90, more preferably below 0.77.Tmax is below-40 ℃, is preferably below-44 ℃, below more preferably-47 ℃.
Dynamic elastic modulus E 1 (22 ℃) is the value of the dynamic elastic modulus E 1 of the temperature dispersion by dynamic viscoelastic when measuring the mensuration temperature obtaining and being 22 ℃.Dynamic elastic modulus E 1 (22 ℃) is below 2.1MPa, is preferably below 1.45MPa, more preferably below 1.15MPa.In addition, more than dynamic elastic modulus E 1 (22 ℃) is preferably 0.4MPa.Dynamic elastic modulus E 1 (22 ℃) is 2.1MPa when following, between paper-feed roll and sheet material, can guarantee sufficient contact area, can obtain being suitable for the great friction coefficient of paper-feed roll.When dynamic elastic modulus E 1 (22 ℃) surpasses 2.1MPa, the contact area of paper-feed roll and sheet material reduces, and can not guarantee sufficient frictional coefficient.In addition, when dynamic elastic modulus E 1 (22 ℃) is less than 0.4MPa, cause sometimes the wear resistant of the rubber layer of paper-feed roll to reduce.
The combination of tan δ max, Tmax and E1 (22 ℃) is any one in following (1)～(6) more preferably.
(1) tan δ max is below 0.90, Tmax is for below-47 ℃, and E1 (22 ℃) is below 2.1MPa.
(2) tan δ max is below 0.77, Tmax is for below-44 ℃, and E1 (22 ℃) is below 2.1MPa.
(3) tan δ max is below 0.90, Tmax is for below-40 ℃, and E1 (22 ℃) is below 1.45MPa.
(4) tan δ max is below 0.90, Tmax is for below-40 ℃, and E1 (22 ℃) is below 1.15MPa.
(5) tan δ max is below 1.1, Tmax is for below-44 ℃, and E1 (22 ℃) is below 1.45MPa.
(6) tan δ max is below 1.1, Tmax is for below-44 ℃, and E1 (22 ℃) is below 1.15MPa.
In order to realize the rubber combination with this dynamic viscoelastic, rubber combination of the present invention preferably comprises composition shown below.
< component of polymer >
Component of polymer, as long as be elastomeric material, is preferably usingd EPDM as main component.It should be noted that, component of polymer can also contain at least one in elastomeric material such as natural rubber, synthetic polyisoprene, divinyl rubber, isoprene-isobutylene rubber, styrene butadiene ribber, poly-norbornene rubber, divinyl-itrile group rubber, chlorine piperylene rubber, halogenated butyl rubber, acrylic rubber and the epichloro hydrin rubber etc. beyond EPDM.While using EPDM as component of polymer, EPDM can be the mixture of non-oil-filled grade, oil-filled grade or non-oil-filled grade and oil-filled grade.
In the present invention, EPDM preferably contains 60 quality % above and the ethylene unit below 72 quality %.When the content of ethylene unit is less than 60 quality %, losstangenttanδ under near temperature province (being designated as below " the low-temperature region ") second-order transition temperature of the rubber combination that comprises Tmax increases sometimes, thus, existence can not provide the situation of paper-feed roll of the retentivity excellence of frictional coefficient.In addition, sometimes cause the wear resistant of the rubber layer of paper-feed roll to reduce.On the other hand, when the content of ethylene unit surpasses 72 quality %, because rubber combination becomes, be difficult to show caoutchouc elasticity, therefore have the situation that is difficult to guarantee the required frictional coefficient of paper-feed roll.
The diene units contained to EPDM is not particularly limited, as long as for ethylidene norbornene, Isosorbide-5-Nitrae-hexadiene, dicyclopentadiene etc., be preferably ethylidene norbornene.
In the present invention, component of polymer can only contain a kind of EPDM or contain two or more EPDM.When component of polymer contains two or more EPDM, the content of ethylene unit adopts by the mean value that ratiometer calculates that contains of various EPDM and evaluates, and adopts particularly the long-pending aggregate values of the containing ratio of characteristic value that various EPDM have and this EPDM to evaluate.That is,, in the situation that being used in combination two or more EPDM, can also mix with the EPDM that does not meet above-mentioned characteristic value meeting the EPDM of above-mentioned characteristic value.
< tenderizer >
Tenderizer is not particularly limited, and preferably the kinematic viscosity at 40 ℃ is 10mm
2above and the 500mm of/s
2below/s.This kinematic viscosity is less than 10mm
2during/s, easily there is oil impregnate in rubber combination sometimes.On the other hand, this kinematic viscosity surpasses 500mm
2during/s, there is the situation that losstangenttanδ increases and Tmax raises under the low-temperature region that causes comprising Tmax, thus, sometimes can not provide the paper-feed roll of the retentivity excellence of frictional coefficient.
As the tenderizer that meets this kinematic viscosity, be not particularly limited, preferably the petroleum of the poor paraffin series of naphthenic hydrocarbon composition and aromatic component coordinates oil or hydrocarbon system synthetic oil (for example oligopolymer of ethene and alpha-olefin).While using the petroleum of paraffin series to coordinate oil, more preferably the kinematic viscosity at 40 ℃ is 10mm
2above and the 110mm of/s
2below/s.In addition, contain under filling oil condition in component of polymer, tenderizer can also be filling oil contained in component of polymer.
Rubber combination of the present invention can only contain a kind of tenderizer or contain two or more tenderizers.When rubber combination contains two or more tenderizer, the kinematic viscosity of the tenderizer at 40 ℃ adopts by the mean value that ratiometer calculates that contains of various tenderizers and evaluates, and adopts particularly the long-pending aggregate values of the kinematic viscosity of the various tenderizers at 40 ℃ and the containing ratio of this tenderizer to evaluate.That is,, in the situation that being used in combination two or more tenderizer, the tenderizer with the kinematic viscosity in above-mentioned scope can also be mixed with the tenderizer with above-mentioned extraneous kinematic viscosity.
It is above and below 150 mass parts that this tenderizer preferably contains 70 mass parts with respect to the component of polymer of 100 mass parts.When the compounding amount of tenderizer is less than 70 mass parts, be difficult to make the dynamic elastic modulus E 1 (22 ℃) of rubber combination for below 2.1MPa, in addition, have the situation that causes Tmax to raise.Thus, existence can not provide frictional coefficient greatly and the situation of the paper-feed roll of its retentivity excellence.On the other hand, when the compounding amount of tenderizer surpasses 150 mass parts, the situation that exists the wear resistant of the rubber layer of paper-feed roll to reduce.It is above and below 140 mass parts that tenderizer more preferably contains 80 mass parts with respect to the component of polymer of 100 mass parts.It should be noted that, in component of polymer, contain under filling oil condition, the quality of filling oil is processed by the compounding quality of tenderizer.
-linking agent-
Linking agent is not particularly limited, can lists the metallic compounds such as sulphur series organic compound, magnesium oxide, organo-peroxide or the resin cross-linking agents etc. such as sulphur, thiuram disulfide.Wherein, from the viewpoint of cheap and can easily obtain, tan δ max is low and then can form the cross linked chain with " Sx-(x is more than 1 integer) " structure of wear resistant excellence, preferably uses sulphur.
Compounding amount to linking agent is not particularly limited, and while using sulphur, preferably the component of polymer with respect to 100 mass parts is more than 1 mass parts and below 6 mass parts, more preferably more than 1 mass parts and below 5 mass parts.When the compounding amount of sulphur is less than 1 mass parts, the wear resistant of the rubber layer of paper-feed roll or compression set characteristic reduce, and cross-linking density reduces in addition, the situation that result exists tenderizer to ooze out.On the other hand, when the compounding amount of sulphur surpasses 6 mass parts, sulphur is frosting likely.
-vulcanization accelerator-
When rubber combination of the present invention contains sulphur as linking agent, preferred rubber composition contains vulcanization accelerator.Vulcanization accelerator is not particularly limited, as long as be the dithiocar-bamate such as the thiurams such as the sulfenamide such as thiazoles, N cyclohexyl 2 benzothiazole sulfenamide, tetramethyl-thiuram disulfide such as dibenzothiazyl disulfide or ziram etc.These materials may be used singly or in combin the two or more of these materials.Compounding amount to vulcanization accelerator is not particularly limited, and carries out suitably setting.
-vulcanization accelerator additive-
Rubber combination of the present invention can also contain vulcanization accelerator additive.Vulcanization accelerator additive can be selected suitable vulcanization accelerator additive according to cross-linking system from the known vulcanization accelerator additives such as the lipid acid such as the metal oxides such as zinc white, stearic acid or oleic acid or Zinic stearas.Compounding amount to vulcanization accelerator additive is not particularly limited, and carries out suitably setting.
-weighting agent-
Rubber combination of the present invention is compounding weighting agent as required.Weighting agent is not particularly limited, and can be carbon black, silicon-dioxide, calcium carbonate, magnesiumcarbonate, aluminium hydroxide, clay, talcum, diatomite, mica, wood chip or cork, can also be straw, bamboo, metal, glass or the fiber that comprises polymkeric substance.These weighting agents can be used separately or mix use.Thus, can realize the raising of physical strength of the rubber layer of paper-feed roll.Wherein, carbon black and silicon-dioxide, because the effect that rubber layer is strengthened is excellent, while therefore using weighting agent, are preferably used at least one in carbon black and silicon-dioxide.
Compounding amount to weighting agent is not particularly limited, and preferably the component of polymer with respect to 100 mass parts is below 20 mass parts, more preferably below 10 mass parts.When the compounding amount of weighting agent surpasses 20 mass parts, be that situation below 20 mass parts is compared with the compounding amount of the lower weighting agent of identical dynamic elastic modulus E 1 (22 ℃), exist losstangenttanδ to raise, can not provide the situation of paper-feed roll of the retentivity excellence of frictional coefficient.
Method of compounding as rubber combination of the present invention, for the maximum value (tan δ max) of the angle tangent tan δ that reduces the wastage, can think that using the tenderizer that kinematic viscosity is low and selecting the EPDM that acetate unit content is many is effective as component of polymer.Temperature (Tmax) while reaching very big for the angle tangent tan δ that reduces the wastage, can think that the compounding amount of using the tenderizer that kinematic viscosity is low and increasing tenderizer is effective.And then, in order to reduce dynamic elastic modulus E 1 (22 ℃), can think the compounding amount that increases the compounding amount of tenderizer and reduce weighting agent, be effective.
The preparation method > of < rubber combination
Rubber combination of the present invention can be prepared as follows: the formulation of the additives such as the weighting agent of the component of polymer that comprises specified amount, tenderizer, linking agent, specified amount as required and vulcanization accelerator, vulcanization accelerator additive and antiaging agent is mixing and obtain unvulcanized rubber combination, and by this unvulcanized rubber combination sulfidization molding under the heating condition of regulation.The vulcanization formation method of rubber combination can list extrusion moulding, transfer molding etc.For example unvulcanized rubber combination is imported to the transfer molding of regulation with in mould, at the temperature of 150～180 ℃, heat about 5～30 minutes, thereby can carry out the crosslinked of rubber combination simultaneously and be shaped to tubulose.Can also at the temperature of 150～180 ℃, to the pipe of institute's moulding, implement as required the post cure of about 30～180 minutes.While so carrying out post cure, can make the low molecular composition easily oozing out volatilize, therefore without recording as Japanese kokai publication hei 10-194512 communique, add separately the thermoplastic macromolecule material for preventing from oozing out.Then, the rubber hose of institute's moulding is for example ground to the external diameter of expectation with cylinder abrasive disk, cuts into the length of expectation, thereby can obtain being suitable for the crosslinked rubber composition of the shape of paper-feed roll.
< paper-feed roll >
Paper-feed roll of the present invention is by being inserted into axle core in the rubber layer that comprises rubber combination of the present invention or forming both are bonding with caking agent.About the formation beyond the material of rubber layer in the formation of paper-feed roll, such as the working method on the shape (such as drum, D word shape etc.) of paper-feed roll, surface (such as grinding, annular knurl processing, shrinkage processing or concavo-convex pattern etc.), the thickness of rubber layer, the diameter of the material of axle core and axle core etc., so long as the formation of paper-feed roll and normally used formation.Rubber layer preferably forms the roller outermost layer contacting with sheet material.This paper-feed roll can or postpone roller (retard roller) etc. as the pick-up roller in business automation equipment or ATM (automatic teller machine) etc., feeding roller.
embodiment
The present invention will be described in more detail below to list embodiment, but the invention is not restricted to this.
The making > of < paper-feed roll
Use the compounding composition shown in the mixing table 1 of mixing roll and table 2, by it in the mould of regulation, under the condition of 160 ℃, 30 minutes after sulfidization molding, and then post cure under the condition of 160 ℃, 60 minutes.Thus, obtain the tubular paper-feed roll rubber-moulding body of external diameter 21mm, internal diameter 9mm, long 50mm.This rubber-moulding body is inserted in the core of diameter 10mm, be cut to width 10mm.Using it as rubber layer 11, insert as shown in Figure 1 in the axle core 12 of polyacetal resin system.Then, by the surface grinding of rubber layer 11 to external diameter, be 20mm, make and comprise rubber layer 11 and the embodiment of axle core 12 and the paper-feed roll of comparative example.Rubber layer 11 after grinding be shaped as external diameter 20mm, internal diameter 10mm, long 10mm.
The mensuration > of < viscoelastic property
Use the compounding composition shown in the mixing table 1 of mixing roll and table 2, use laminar mould, sulfidization molding under the condition of 160 ℃, 30 minutes, and then post cure under the condition of 160 ℃, 60 minutes.Thus, obtain laminar rubber cross thing.By this thin slice, be die-cut into the strip sample of wide 5mm * long 20mm * thick 2mm.Use Measurement of Dynamic Viscoelasticity device (UBM company manufactures, Rheogel E4000FHP), under following condition determination, measure the viscoelastic property (temperature dispersion) of the die-cut sample forming.
Measure temperature :-84 ℃～120 ℃
Measure the heat-up rate of temperature: 2 ℃/min
Measure temperature interval: 1 ℃
Measure frequency: 10Hz
Initial strain: 1.3mm
Amplitude: 2 μ m
Deformation pattern: stretch
Chuck spacing 10mm
Waveform: sine wave.
For the sample of above-mentioned making, by measurement result, read the value of dynamic elastic modulus E 1 (22 ℃), the figure by the relation of resulting expression temperature and losstangenttanδ reads tan δ max and Tmax in addition.
< paper feed test >
Each paper-feed roll of embodiment and comparative example is installed to colored compounding machine DocuCentre C6550I (Fuji Xerox Co., Ltd. manufactures) above, and to Fuji XeroxCo., Ltd. manufactures " Xerox4200 " and carries out paper feed.Be determined under 22 ℃ of temperature, humidity 55% environment and carry out.Paper-feed roll, measure paper using and paper feed with trier, under this environment, place 24 hours above after, start paper feed and test.
The mensuration > of < coefficientoffrictionμ
Coefficientoffrictionμ is measured by the method shown in Fig. 2.Being determined under 22 ℃ of temperature, humidity 55% environment of frictional coefficient carried out.Paper-feed roll, mensuration paper using, mensuration fixture start to measure after placing more than 24 hours under this environment.First, between the paper-feed roll being formed by rubber layer 21 and axle core 22 and Teflon (registered trademark) plate 23, paper 24 (the Fuji Xerox Co. of the sandwiched 80mm * 210mm size being connected with loadometer 25, Ltd. manufacture " Xerox4200 "), as shown in the vertical arrows W in figure, with vertical load W (W=250gf), paper-feed roll is pressed on Teflon (registered trademark) plate 23.Then, make paper-feed roll with the rotating speed of 300mm/ second along in the direction rotation shown in arrow a in figure, the frictional force (the power F that the hollow arrow in figure represents) of utilizing loadometer to measure the power of stretching paper, produce.By F[gf] and load W[gf] by following formula (1), try to achieve coefficientoffrictionμ.It should be noted that, after the initial stage that is determined at of frictional coefficient and the paper feed of regulation number, carry out.
Coefficientoffrictionμ=F[gf]/W[gf] (1)
The evaluation > of < viscoelastic property and paper feed performance
Mensuration by above-mentioned determination of viscoelasticity, paper feed test and coefficientoffrictionμ is evaluated paper feed performance.Result is as shown in table 5～table 6 and Fig. 3～Fig. 6.It should be noted that, in table 3, gather the content of the ethylene unit that represents each EPDM, in table 4, gather and represent the kinematic viscosity of each tenderizer at 40 ℃.In addition, about " the paper feed performance " in table 5～table 6, the residual coefficientoffrictionμ that paper feed number is reached to the moment of 20000 is that more than 1.5 situations is designated as S, the residual coefficientoffrictionμ that paper feed number is reached to the moment of 20000 is more than 1.2 and 1.5 the situation of being less than is designated as A, the residual coefficientoffrictionμ that paper feed number is reached to the moment of 20000 be less than 1.2 and the paper feed number residual coefficientoffrictionμ that reaches the moment of 15000 be that more than 1.2 situation is designated as B, the residual coefficientoffrictionμ that paper feed number is reached to the moment of 15000 is less than 1.2 situation and is designated as C.
[table 1]
[table 2]
[table 3]
[table 4]
[table 5]
[table 6]
The annotation of table 1～table 4 is as described below.
(1) ESPRENE512F is the EPDM (non-oil-filled) that sumitomo chemical company is manufactured.
(2) EPDM (oil-filled 75 parts) that EP98 ShiJSR company manufactures.
(3) 4770R is the EPDM (non-oil-filled) that DuPont company manufactures.
(4) EPDM (non-oil-filled) that EP103AF ShiJSR company manufactures.
(5) PW32 is the petroleum cooperation oil (process oil) of the paraffin series of Idemitsu Kosen Co., Ltd.'s manufacture.
(6) PW90 is the petroleum cooperation oil (process oil) of the paraffin series of Idemitsu Kosen Co., Ltd.'s manufacture.
(7) PW380 is the petroleum cooperation oil (process oil) of the paraffin series of Idemitsu Kosen Co., Ltd.'s manufacture.
(8) Sunthene4240 is the petroleum cooperation oil (process oil) of the cycloalkanes hydrocarbon system of Japan Sun Oil Co.Ltd. manufacture.
(9) LUCANT HC-40 is the hydrocarbon system synthetic oil that Mitsui Chemicals, Inc. manufactures.
(10) Nipsil VN3 is the silicon-dioxide that Tosoh Silica Corporation manufactures.
(11) Denka Black is the acetylene black that electrochemical company manufactures.
(12) stearic acid is the trade(brand)name " Lunac S-30 " that KAO. Corp. SA manufactures.
(13) zinc oxide (trade(brand)name " No. 1, zinc white ") that zinc white Shi Zhengtong chemical company manufactures.
(14) calcium carbonate that calcene CCShi Bai stone industrial manufactures.
(15) trade(brand)name " Sulfax A " that Liu Shihejian chemical industrial company manufactures.
(16) DM is the trade(brand)name " NoccelerDM " that the emerging chemical company of imperial palace manufactures.
(17) TRA is the trade(brand)name " NoccelerTRA " that the emerging chemical company of imperial palace manufactures.
(18) TTTE is the trade(brand)name " NoccelerTTT E " that the emerging chemical company of imperial palace manufactures.
(19) BZ is the trade(brand)name " Nocceler BZ " that the emerging chemical company of imperial palace manufactures.
From the result shown in table 5～table 6 and Fig. 3～Fig. 5, in the temperature dispersion of dynamic viscoelastic is measured, tan δ max is 1.1 below, Tmax is below-40 ℃, and dynamic elastic modulus E 1 (22 ℃) is 2.1MPa when following, paper feed excellent performance.
Comparative example 1 is owing to using the petroleum that kinematic viscosity is higher to coordinate oil as tenderizer, tan δ max be greater than 1.1 and Tmax higher than-40 ℃, its result, can think the retentivity variation of frictional coefficient.In addition, think and use the petroleum of cycloalkanes hydrocarbon system to coordinate oil as tenderizer, also to become the reason of the retention variation of frictional coefficient.
Comparative example 2 is due to compounding tenderizer not completely, and Tmax is greater than 2.1MPa higher than-40 ℃ and E1 (22 ℃), and its result can be thought the retentivity variation of frictional coefficient.
Although comparative example 3 and comparative example 4 are used the petroleum of the paraffin series that kinematic viscosity is lower to coordinate oil as tenderizer, but because its compounding amount is less than 35 mass parts, therefore Tmax is greater than 2.1MPa higher than-40 ℃ and E1 (22 ℃), and its result can be thought the retentivity variation of frictional coefficient.
Comparative example 5 is owing to using the petroleum that kinematic viscosity is higher to coordinate oil to be less than 35 mass parts as tenderizer and its compounding amount, so Tmax is greater than 2.1MPa higher than-40 ℃ and E1 (22 ℃), and its result can be thought the retentivity variation of frictional coefficient.
Comparative example 6 is owing to using the petroleum that kinematic viscosity is higher to coordinate oil to be less than 70 mass parts as tenderizer and its compounding amount, so Tmax is higher than-40 ℃, and its result can be thought the retentivity variation of frictional coefficient.
Comparative example 7 is owing to using the petroleum that kinematic viscosity is higher to coordinate oil as tenderizer, so Tmax is higher than-40 ℃, and its result can be thought the retentivity variation of frictional coefficient.
Comparative example 8 is owing to using EPDM that the content of ethylene unit is not high as polymkeric substance, so tan δ max is greater than 1.1, and its result can be thought the retentivity variation of frictional coefficient.
Known as shown in Figure 6, near the losstangenttanδ of room temperature region in comparative example 8 (22 ℃) and embodiment 9 is equal or lower than embodiment 9, but the losstangenttanδ of the low-temperature region that comprises Tmax is greater than embodiment 9.Thus, the control of the losstangenttanδ of low-temperature region is important, thereby can improve the retentivity of frictional coefficient.
As above embodiments of the present invention and embodiment are illustrated, but from the initial feature of just estimating all right appropriately combined each embodiment and embodiment.
Although the present invention is had been described in detail, these illustrate only for illustration, and do not have any restriction, scope of the present invention should make an explanation according to desired claims, and this is apparent.
Claims (3)
1. a paper-feed roll rubber combination, it at least contains component of polymer and tenderizer,
Described paper-feed roll uses rubber combination in the temperature dispersion of dynamic viscoelastic is measured, the maximum value of losstangenttanδ is below 1.1, temperature when losstangenttanδ reaches very big is for below-40 ℃, and dynamic elastic modulus E 1 (22 ℃) is below 2.1MPa
Described component of polymer is usingd ethylene, propylene-diene copolymers as main component,
Described ethylene, propylene-diene copolymers contains 60 quality % above and the ethylene unit below 72 quality %,
Described component of polymer with respect to 100 mass parts contains the described tenderizer of 70 mass parts above and below 150 mass parts,
Described tenderizer is that the kinematic viscosity at 40 ℃ is 10mm
2above and the 110mm of/s
2it is 10mm that the petroleum of the paraffin series below/s coordinates oil and the kinematic viscosity at 40 ℃
2above and the 500mm of/s
2at least one in hydrocarbon system synthetic oil below/s.
2. paper-feed roll rubber combination according to claim 1, wherein, contains the above and sulphur below 6 mass parts of 1 mass parts as linking agent with respect to the described component of polymer of 100 mass parts.
3. a paper-feed roll, it has and comprises the rubber layer of rubber combination for paper-feed roll claimed in claim 1.
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| JP2016222829A (en) * | 2015-06-01 | 2016-12-28 | 住友ゴム工業株式会社 | Rubber composition and paper feeding roller using the same |
| JP6661413B2 (en) * | 2016-03-03 | 2020-03-11 | 三井化学株式会社 | Hulling roll and method for producing the hulling roll |
| JP6980244B2 (en) * | 2016-05-19 | 2021-12-15 | ヤマウチ株式会社 | Torque limiter and separation mechanism |
| JP2018188551A (en) * | 2017-05-02 | 2018-11-29 | ヤマウチ株式会社 | Rubber composition for paper feed roll and paper feed roll |
| JP6391756B1 (en) * | 2017-05-02 | 2018-09-19 | ヤマウチ株式会社 | Rubber composition for paper feed roll and paper feed roll |
| US20190219953A1 (en) * | 2018-01-12 | 2019-07-18 | Sumitomo Rubber Industries, Ltd. | Rubber composition, rubber roller, and image forming device |
| JP7157900B2 (en) * | 2018-06-28 | 2022-10-21 | 住友ゴム工業株式会社 | RUBBER COMPOSITION AND PAPER FEED ROLLER USING THE SAME |
| JP7157901B2 (en) * | 2018-06-28 | 2022-10-21 | 住友ゴム工業株式会社 | RUBBER COMPOSITION AND PAPER FEED ROLLER USING THE SAME |
| JP7157902B2 (en) * | 2018-06-29 | 2022-10-21 | 住友ゴム工業株式会社 | RUBBER COMPOSITION AND PAPER FEED ROLLER USING THE SAME |
| CN114962549B (en) * | 2021-02-22 | 2023-05-09 | 阪东化学株式会社 | Trimming V-shaped belt |
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| JP2007112836A (en) * | 2005-10-18 | 2007-05-10 | Sumitomo Rubber Ind Ltd | Elastomer composition and rubber roller using the same |
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