CN103857746A - Semi-conductive rubber composition - Google Patents

Semi-conductive rubber composition Download PDF

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Publication number
CN103857746A
CN103857746A CN201280049339.XA CN201280049339A CN103857746A CN 103857746 A CN103857746 A CN 103857746A CN 201280049339 A CN201280049339 A CN 201280049339A CN 103857746 A CN103857746 A CN 103857746A
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rubber
semi
conductivity
copper
based polymer
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宇野和树
大贯孝司
安田和敬
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Osaka Soda Co Ltd
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Daiso Co Ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/14Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
    • G03G15/162Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support details of the the intermediate support, e.g. chemical composition
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/10Metal compounds
    • C08K3/105Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/14Peroxides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00Compositions of unspecified rubbers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/085Copper

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

A semi-conductive vulcanized rubber material having a predetermined shape can be produced using, as a raw material, a semi-conductive rubber composition comprising: (a) a polyether polymer which is produced by polymerizing an oxirane compound and acts as a rubber component; (b) a copper compound; and (c) an organic peroxide. The semi-conductive vulcanized rubber material has low staining properties, a low volume resistivity and low dependency of volume resistivity on the environment, and is therefore particularly useful as a material that constitutes a semi-conductive rubber roll or a semi-conductive endless rubber belt for use in a laser printer or a copying machine.

Description

Semi-conductivity rubber combination
Technical field
Semi-conductivity rubber combination of the present invention and sulfide thereof, utilize its semi-conductivity characteristic, is used to the member using in the semi-conductive roller of the development of the electronic camera technology in duplicating machine, printer etc., charged, transfer printing etc. or travelling belt.
Background technology
In recent years, in the charged roller using in contact electrification mode, transfer roll, developer roll, due to the further requirement of higher image quality, high speed, require further to improve the physico-chemical property of elastomeric material at base material part.Still it should be noted that, below, as the example of semi-conductivity member, record electronic photographing device purposes although illustrate, purposes of the present invention is not limited in electronic photographing device purposes.
Because the semi-conductivity elastomeric material of rubber charged roller, the transfer roll etc. of the requirement of higher image quality, high speed, particularly electrophotographic copier is required to meet following condition.
(1) measure environment under low temperature and low humidity and hot and humid lower time there is semiconduction characteristic.
(2) though preferably under low temperature and low humidity, hot and humid lower printing characteristic also do not change, therefore the environmental factor dependence of volume specific resistance is little.
(3) about the member directly contacting with photoreceptor, charged roller, transfer roll etc., the contaminative of photoreceptor is less.
As semi-conductivity elastomeric material, known have rubber such as acrylonitrile butadiene rubber, terpolymer EP rubber, neoprene, in these semi-conductivity elastomeric materials, although antifriction consumption excellence, but exist the problem that volume specific resistance uprises.Therefore,, as the rubber constituent of the semi-conductivity elastomeric material for except above-mentioned, known have the polyethers based polymer of oxirane compound polymerization formation.
When having used the semi-conductivity elastomeric material of polyethers based polymer that oxirane compound polymerization is formed, conventionally known sulfuration with sulphur and compared with the semi-conductivity elastomeric material that forms, with organo-peroxide vulcanize and the semi-conductivity elastomeric material that forms to the contaminative of photoreceptor little (with reference to patent documentation 1).
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 6-208289 communique
Summary of the invention
Invent problem to be solved
But the inventor conducts in-depth research, result is distinguished: vulcanize and the semi-conductivity elastomeric material that forms is poor at the semi-conductivity elastomeric material forming than vulcanizing with sulphur aspect volume specific resistance and environmental factor dependence with organo-peroxide.Therefore, in the invention of recording, be difficult to provide the little semi-conductivity elastomeric material of volume specific resistance environmental factor dependence low and volume specific resistance needing on market in recent years at above-mentioned patent documentation 1, this is truth.
The present invention proposes taking above-mentioned situation as background, and its object is: the contaminative after a kind of sulfuration and semi-conductivity rubber combination and the sulfide thereof that volume specific resistance is low and the environmental factor dependence of volume specific resistance is little are provided.
Solve the method for problem
The inventor conducts in-depth research in order to solve above-mentioned problem, found that: as described later shown in experimental result, (1) have in the vulcanized rubber of rubber combination of organo-peroxide and copper compound in combined hybrid, given play to the unexpected effect that reduces volume specific resistance and can reduce the environmental factor dependence of volume specific resistance; And (2) described effect improves specifically in the rubber constituent that comprises the polyethers based polymer that oxirane compound polymerization is formed.The present invention draws above-mentioned result of study, by formation as described below, has reached above-mentioned purpose.
Semi-conductivity rubber combination of the present invention, is characterized in that, contains (a) polyethers based polymer, (b) copper compound, (c) organo-peroxide that oxirane compound polymerization is formed as rubber constituent.As mentioned above, in the present invention, by being combined with rubber constituent, (b) copper compound that (a) comprise the polyethers based polymer that oxirane compound polymerization is formed and (c) these 3 kinds of compositions of organo-peroxide, can manufacture the contaminative after sulfuration and volume specific resistance is low and the environmental factor dependence of volume specific resistance is little semi-conductivity vulcanized rubber material.
In semi-conductivity rubber combination of the present invention, preferred, polyethers based polymer comprises at least two kinds of unit that are selected from oxyethane, propylene oxide, epoxy chloropropane, glycidyl allyl ether in Component units.
In semi-conductivity rubber combination of the present invention, described (b) copper compound is preferably at least one that is selected from the mantoquita of Inorganic Copper compound, carboxylic acid and the mantoquita of dithiocarbamic acid, wherein said Inorganic Copper compound is selected from cupric oxide, copper hydroxide, copper carbonate, cupric chloride, cupric sulfide, copper sulfate, and described (b) copper compound is more preferably selected from least one of cupric oxide, copper stearate, cupric dimethyldithiocarbamate.
In semi-conductivity rubber combination of the present invention, as (a) rubber constituent, can only contain the polyethers based polymer that oxirane compound polymerization is formed, also can further contain the rubber kind except described polyethers based polymer.
In semi-conductivity rubber combination of the present invention, preferably, with respect to 100 weight parts (a) rubber constituent, (b) combined amount of copper compound is below 0.5 weight part.In addition, theoretical active oxygen amount taking the content of described (c) organo-peroxide with respect to (a) rubber constituent described in 100 weight parts as X weight part, described (c) organo-peroxide during as Y (%), is preferably
0.4≤X×Y≤200。
In semi-conductivity rubber combination of the present invention, preferably in semi-conductivity rubber combination, add (d) conductive agent, described semi-conductivity rubber combination is characterised in that: contain rubber constituent, (b) copper compound, (c) organo-peroxide that (a) comprises the polyethers based polymer that oxirane compound polymerization is formed.
In semi-conductivity rubber combination of the present invention, as rubber constituent, preferably contain the polyethers based polymers that oxirane compound polymerization is formed more than 10 % by weight, and preferably contain the polyethers based polymer that oxirane compound polymerization is formed of 10~90 % by weight, the rubber except the polyethers based polymer that oxirane compound polymerization is formed of 10~90 % by weight.
In semi-conductivity rubber combination of the present invention, as the described rubber kind except polyethers based polymer, exemplify natural rubber or synthetic rubber, as synthetic rubber, exemplify synthetic polyisoprene (IR), 1, 2-polyhutadiene (VBR), styrene butadiene ribber (SBR), isoprene-isobutylene rubber (IIR), ethylene propylene rubber (EPM), terpolymer EP rubber (EPDM), neoprene (CR), chlorosulfonated polyethylene (CSM), chlorinatedpolyethylene (CPE), acrylic rubber (ACM), acrylonitrile butadiene rubber (NBR), hydrogenated acrylonitrile divinyl rubber (H-NBR), be preferably and be selected from ethylene propylene rubber (EPDM), neoprene (CR), at least one of acrylonitrile butadiene rubber (NBR).
In semi-conductivity rubber combination of the present invention, as (a) rubber constituent, preferably contain 10 % by weight above, more preferably contain 30 % by weight above, particularly preferably contain 70% weight above, most preferably contain polyethers based polymers more than 90 % by weight.
The semi-conductivity elastomeric material that semi-conductivity rubber combination sulfuration of the present invention is formed is made semi-conductivity rubber rollers or semi-conductivity string rubber for no reason, mainly as electronic photographing device material.
Invention effect
The semi-conductivity vulcanization of rubber thing obtaining by the present invention, its contaminative and volume specific resistance environmental factor dependence low and volume specific resistance is little.Therefore, described semi-conductivity vulcanization of rubber thing is very useful in semi-conductivity rubber rollers and the travelling belt etc. of duplicating machine, printer etc.
Embodiment
Below, the present invention is described in detail.
Semi-conductivity rubber combination of the present invention, is characterized in that, contains (a) polyethers based polymer, (b) copper compound, (c) organo-peroxide that oxirane compound polymerization is formed as rubber constituent.
As the polyethers based polymer (rubber) using in the present invention, oxirane compound polymerization is formed, be homopolymer or the multipolymer that is selected from the compound of epoxyhalopropane class, the Styrene oxide 98min.s etc. such as Racemic glycidol ethers, epoxy chloropropane, epoxy bromopropane such as the oxirane hydro carbons such as oxyethane, propylene oxide, butylene oxide ring, methyl glycidyl ether, ethyl ether, n-glycidyl ether, glycidyl allyl ether, phenyl glycidyl ether, these homopolymer or multipolymer can use one or more to be combined with.
As the polyethers based polymer that oxirane compound polymerization is formed, preferably in Component units, comprise two kinds of unit that are selected from epoxy chloropropane, propylene oxide, oxyethane, glycidyl allyl ether, more preferably in Component units, comprise the unit of oxyethane and glycidyl allyl ether, particularly preferably in the unit that comprises epoxy chloropropane, oxyethane and glycidyl allyl ether in Component units.
As the polyethers based polymer that oxirane compound polymerization is formed, with respect to whole polymerized units, be preferably 50~85 % by mole taking oxyethane as basic Component units, more preferably 58~80 % by mole, be particularly preferably 65~75 % by mole.
As the polyethers based polymer that oxirane compound polymerization is formed, with respect to whole polymerized units, be preferably 1~15 % by mole taking glycidyl allyl ether as basic Component units, more preferably 2~12 % by mole, be particularly preferably 3~10 % by mole.
As the polyethers based polymer that oxirane compound polymerization is formed, with respect to whole polymerized units, be preferably 10~45 % by mole taking epoxy chloropropane as basic Component units, more preferably 15~35 % by mole, be particularly preferably 20~30 % by mole.
In semi-conductivity rubber combination of the present invention, using the total amount of (a) rubber constituent during as 100 weight part, preferably contain 10 % by weight above, more preferably contain 30 % by weight above, particularly preferably contain 70% weight above, most preferably contain the polyethers based polymers that oxirane compound polymerization is formed more than 90 % by weight.
In semi-conductivity rubber combination of the present invention, as (a) rubber constituent, can only contain the polyethers based polymer that oxirane compound polymerization is formed, also can further contain the rubber kind except described polyethers based polymer.As the rubber except the polyethers based polymer that oxirane compound polymerization is formed, exemplify natural rubber or synthetic rubber, as synthetic rubber, exemplify synthetic polyisoprene (IR), 1, 2-polyhutadiene (VBR), styrene butadiene ribber (SBR), isoprene-isobutylene rubber (IIR), ethylene propylene rubber (EPM), terpolymer EP rubber (EPDM), neoprene (CR), chlorosulfonated polyethylene (CSM), chlorinatedpolyethylene (CPE), acrylic rubber (ACM), acrylonitrile butadiene rubber (NBR), hydrogenated acrylonitrile divinyl rubber (H-NBR), be preferably and be selected from ethylene propylene rubber (EPDM), neoprene (CR), at least one of acrylonitrile butadiene rubber (NBR).
In the time containing rubber kind except described polyethers based polymer as the rubber constituent of semi-conductivity rubber combination of the present invention, in preferred rubber composition, contain the described polyethers based polymer of 10~90 % by weight, the rubber kind except described polyethers based polymer of 90~10 % by weight, more preferably contain the described polyethers based polymer of 30~90 % by weight, the rubber kind except described polyethers based polymer of 70~10 % by weight, particularly preferably contain the described polyethers based polymer of 70~90 % by weight, the rubber kind except described polyethers based polymer of 30~10 % by weight.
(b) copper compound in the present invention, can not limit and use Inorganic Copper compound, organocopper compound, as their object lesson, as Inorganic Copper compound, illustrates cupric thiocyanide (copper rhodanide), cupric cyanide, cupric cyanide sodium, cupric potassium cyanide, copper sulfate, cupric nitrate, copper carbonate, cupric iodate, Vienna green, cupric pyrophosphate, cupric fluoborate, cupric oxide, copper hydroxide, copper peroxide, cupric chloride, cupric iodide, cupric bromide, cupric fluoride, carbonization copper, cupric sulfide, cupric ammonium chloride, copper azides etc., as organocopper compound, illustrate venus crystals, cupric octoate, copper naphthenate, copper stearate, cupric benzoate, lauric acid copper, the mantoquita of the carboxylic acids such as terephthalic acid copper, cupric dimethyldithiocarbamate, diethylamino formic acid copper, copper dibutyldithiocarbamate, N-ethyl-N-phenyl dithiocarbamic acid copper, N-pentylidene dithiocarbamic acid copper, the mantoquita of the dithiocarbamic acids such as dibenzyl aminodithioformic acid copper, CuPc (phthalocyanine blue, phthalocyanine green).In (b) of the present invention copper compound, be preferably the Inorganic Copper compound, the mantoquita of carboxylic acid and the mantoquita of dithiocarbamic acid that are selected from cupric oxide, copper hydroxide, copper carbonate, cupric chloride, cupric sulfide, copper sulfate, be preferably cupric oxide, copper stearate, cupric dimethyldithiocarbamate.
With respect to 100 weight parts (a) rubber constituent, the combined amount of described (b) copper compound is preferably below 0.5 weight part, more preferably 0.01~0.5 weight part, more preferably 0.01~0.3 weight part, is particularly preferably 0.05~0.1 weight part.
As the object lesson of (c) organo-peroxide of the semi-conductivity rubber combination for vulcanizing the present invention, exemplify tert-butyl hydroperoxide, 1,1,3,3 ,-tetramethyl butyl hydroperoxide, cumene hydroperoxide, hydroperoxidation diisopropylbenzene(DIPB), ditertiary butyl peroxide, dicumyl peroxide, tert-butyl peroxide isopropyl benzene, 1,1-tert-butyl hydroperoxide hexanaphthene, 2,5-dimethyl-2,5-di-t-butyl hexane peroxide, 2,5-dimethyl-2,5-di-t-butyl peroxy-3-hexin, 1,3-dual-tert-butyl peroxy isopropyl base benzene, 2,5-dimethyl-2, the two benzoyl peroxide hexanes of 5-, 1,1-di-tert-butyl peroxide-3,3,5-trimethyl-cyclohexane, peroxidation trimethylacetic acid normal-butyl-4,4-di tert butyl carbonate, benzoyl peroxide, peroxidation tert-butyl isobutyrate, peroxidation (2 ethyl hexanoic acid) tert-butyl ester, t-butyl per(oxy)benzoate, tert.-butyl peroxyisopropyl carbonate, t-butyl peroxy allyl group monocarbonate, to methylbenzoyl peroxide, preferably comprise at least one.In addition, can also and the known vulcanizing agent that uses while comprising the rubber constituent of polyethers based polymer that oxirane compound polymerization is formed of sulfuration (a) be combined with.
Theoretical active oxygen amount taking the content of described (c) organo-peroxide with respect to (a) rubber constituent described in 100 weight parts as X weight part, described (c) organo-peroxide is during as Y (%), the combined amount of described (c) organo-peroxide:
Be preferably 0.4≤X × Y≤200;
More preferably 0.4≤X × Y≤100;
Be particularly preferably 0.4≤X × Y≤80.Theoretical active oxygen amount is calculated by following formula (1).
Theoretical active oxygen amount (%)={ (peroxidation bond number × 16 in molecule)/molecular weight } × 100 (1)
In semi-conductivity rubber combination of the present invention, except above-mentioned (a), (b), (c) composition, can also add (d) conductive agent.As (d) conductive agent in the present invention, exemplify such as quaternary ammonium salt, borate, perchlorate, sylvite, tensio-active agent, lithium salts etc.Particularly, exemplify Tetrabutylammonium bromide, TBAP, ethyl tributyl ammonium sulfovinate, sodium perchlorate, lithium perchlorate, calcium perchlorate, Trimethyllaurylammonium chloride, chlorination stearyl trimethyl ammonium, octadecyl trimethyl ammonium chloride, chlorination dodecyl trimethyl ammonium, cetyltrimethylammonium chloride, bromination trioctylphosphine propyl ammonium, dimethyl alkyl lauryl betaine, trifluoromethanesulfonic acid lithium etc., preferably comprise at least one.
With respect to (a) rubber constituent described in 100 weight parts, the content of described (d) conductive agent is preferably 0.5~10 weight part, and more preferably 1~8 weight part, is particularly preferably 2~5 weight parts.
As the sour agent that is subject to using in the present invention, can use to be knownly subject to sour agent, but be preferably metallic compound and/or inorganic microporous crystal.As metallic compound, exemplify the metallic compounds such as the oxide compound, subcarbonate, alkali formula carboxylate salt, alkali formula phosphite, alkali acid sulphite, three subsulphates of oxide compound, oxyhydroxide, carboxylate salt, silicate, vitriol, nitrate, phosphoric acid salt, periodictable IV family (4 families and the 14 families) metal of oxide compound, oxyhydroxide, carbonate, carboxylate salt, silicate, borate, phosphite, cycle Table III family (3 families and the 13 families) metal of periodictable II family (2 families and 12 families) metal.
As the object lesson of described metallic compound, can exemplify magnesium oxide, magnesium hydroxide, aluminium hydroxide, hydrated barta, sodium carbonate, magnesiumcarbonate, barium carbonate, unslaked lime, slaked lime, calcium carbonate, Calucium Silicate powder, calcium stearate, Zinic stearas, calcium phthalate, phosphorous acid calcium, the flowers of zinc, stannic oxide, plumbous oxide, red lead, white lead, dibasic lead phthalate, two white lead carbonates, stearic acid tin, alkali formula Lead Phosphite, Dibasic (Coated), alkali formula phosphorous acid tin, basic lead sulfite, tribasic lead sulfate etc., preferably sodium carbonate, magnesium oxide, magnesium hydroxide, unslaked lime, slaked lime, Calucium Silicate powder, the flowers of zinc etc.
Described inorganic microporous crystal refers to crystallinity porous insert, and it can such as, clearly be distinguished and come with amorphous porous insert, silica gel, aluminum oxide etc.As the example of such inorganic microporous crystal, exemplify zeolites, aluminum phosphate type molecular sieve, layered silicate, synthetic hydrotalcite, metatitanic acid an alkali metal salt etc.Be subject to sour agent as particularly preferred, exemplify synthetic hydrotalcite.
Described zeolites is except natural zeolite, also have A type, X-type, the synthetic zeolite of Y type, sodalite class, natural or the various zeolites such as synthesizing flokite, ZSM-5 and their metal replacement body, these zeolites can use separately, also can be used in combination.In addition, the metal of metal replacement body sodium often.As zeolites, be preferably subject to the zeolite that sour ability is large, preferably A type zeolite.
Described synthetic hydrotalcite is represented by following general formula (2).
Mg XZn YAl z(OH) (2(X+Y)+3Z-2)CO 3·wH 2O (2)
[in formula, x and y represent respectively to have 0~10 real number of the relation of x+y=1~10, and z represents 1~5 real number, and w represents 0~10 real number.]
The example of the hydrotalcite representing as described general formula (2), can exemplify Mg 4.5al 2(OH) 13cO 33.5H 2o, Mg 4.5al 2(OH) 13cO 3, Mg 4al 2(OH) 12cO 33.5H 2o, Mg 6al 2(OH) 16cO 34H 2o, Mg 5al 2(OH) 14cO 34H 2o, Mg 3al 2(OH) 10cO 31.7H 2o, Mg 3znAl 2(OH) 12cO 33.5H 2o, Mg 3znAl 2(OH) 12cO 3deng.
As the protective agent using in the present invention, can use known protective agent, as an example, exemplified by phenyl-alpha-naphthylamine, para toluene sulfonamide-pentanoic, 4, the high-temperature reaction product of 4-alpha, alpha-dimethylbenzyl pentanoic, pentanoic and acetone, the low-temp reaction product of pentanoic and acetone, the low-temp reaction thing of pentanoic, aniline, acetone, the reaction product of pentanoic and diisobutylene, octylated diphenylamine, substituted diphenylamine, alkylated diphenylamine, diphenylamine derivatives, N, N '-phenylbenzene-Ursol D, N-sec.-propyl-N '-phenyl-Ursol D, N, N '-bis--2-naphthyl-Ursol D, N-phenyl-N '-3-methacryloxy-2-hydroxypropyl-Ursol D, N, N '-bis-1-methylheptyl-Ursol D, N, N '-bis-1,4-dimethyl amyl group-Ursol D, N-1, the mixture of 3-dimethylbutyl-N '-phenyl-Ursol D, diallyl-Ursol D, phenyl, the mixture of octyl group-Ursol D, phenyl-a-naphthylamine and phenylbenzene-Ursol D, 2,2,4-trimethylammonium-1, the polymkeric substance of 2 dihydroquinoline, 6-oxyethyl group-2,2,4-trimethylammonium-1,2-dihydroquinoline, 2,5-bis--amyl hydroquinone, 2,5-bis--tertiary butylated hydroquinone, 1-oxo-3-methyl-4-isopropyl benzene, 2,6-bis--tertiary butyl-4-ethylphenol, butylated hydroxy anisole, 2,6-bis--tertiary butyl-alpha-alpha-dimethyl amino-p-cresol, 2,6-bis--tert.-butyl phenol and 2, the mixture of 4,6-, tri--tert.-butyl phenol and o-tert.-butyl phenol, the mixture of styrenated phenol, alkylated phenol, alkyl and aralkyl fortified phenol, phenol derivatives, 2,2 '-methylene radical-bis--4-methyl-6-tert-butylphenol, 2,2 '-methylene radical-bis--4-methyl-6-cyclohexylphenol, 2,2 '-methylene radical-bis--4-ethyl-6-tert.-butyl phenol, 4,4-methylene radical-bis--2, the butylation reaction product of 6-bis--tert.-butyl phenol, methylene-crosslinked multivalence alkylphenol, alkylation bis-phenol, p-cresol and Dicyclopentadiene (DCPD), the mixture of poly-butylated bisphenol A, 4, the 4-thiobis-6-tertiary butyl-3-methylphenol, 4,4-butylidene is two-3 methy 6 tert butyl phenol, the two octyl group methylthio group-ortho-cresols of 2,4-, hindered phenol, hindered bisphenol, 2-mercaptobenzimidazole, 2 mercaptomethyl benzimidazole, the zinc salt of 2-mercaptobenzimidazole, the zinc salt of 2 mercaptomethyl benzimidazole, 4,5-mercapto methyl benzoglyoxaline, the zinc salt of 4,5-mercapto methyl benzoglyoxaline, two (octadecyl) disulfide, nickel diethyldithiocarbamate, nickel dibutyl dithiocarbamate, two dimethylaminopropyl-2-the thiocarbamides of 1,3-, tributyl thiourea, the n-alkylthio propionyloxy-5-of two 2-methyl-4-3-tert-butyl-phenyl thioether, two 3,5-bis--tertiary butyl-4-hydroxy benzyl thioether, mix thio-2 acid dodecyl stearyl, cyclic acetal, the mixture of 60% polymer polyatomic alcohol and 40% hydrogenated silicon dioxide, the special polyoxyethylene glycol processed goods being formed by 2 molecular structures of polyethylene and polyoxyethylene glycol, the particular design mixture of inert filler and polymer polyatomic alcohol, compound is protective agent, enol ether, 1,2,3-benzotriazole, 3-N-salicylic amide-1,2,4-triazole, triazine is derivate complex, decamethylene dicarboxylic acid two salicylyl hydrazines, N, N '-bis-3-3,5-bis--uncle-4-hydroxy phenyl propionyl hydrazine, four-methylene radical-3-3 ', 5 '-bis--tertiary butyl, 4 ' hydroxyphenylpropionic acid ester methane etc.
In semi-conductivity rubber combination of the present invention, only otherwise undermine effect of the present invention, except mentioned component, can also mix arbitrarily the various weighting agents that use in this technical field, strengthening agent, softening agent, processing aid, fire retardant, Yan material, vulcanization accelerator etc.And, not losing in the scope of characteristic of the present invention, can also carry out the mixing of rubber, resin etc. that this technical field carries out conventionally.
As the blending means of semi-conductivity rubber combination of the present invention, can adopt any means that polymer processing field adopts in the past, can use such as mixing roll, Banbury mixer, various kneader classes etc.As forming method, can illustrate the compressed moulding that utilizes metal pattern to carry out, extrusion moulding, injection molding etc., but preferably use extrusion moulding, the injection molding of semi-conductivity rubber combination of the present invention.
Use the sulfide of semi-conductivity rubber combination of the present invention, by add vulcanizing agent of regulation etc. in described semi-conductivity rubber combination, conventionally reheat to 100~200 DEG C and obtain, curing time is according to temperature and difference is carried out 0.5~300 minute conventionally.
Below, illustrate by embodiment and comparative example.It should be noted that, the present invention is not limited to these examples.
First, use the each mixture shown in mixing table 1~6 of adding pressure type kneader of 120 DEG C, make the mixing thing of A.Use the mixing thing of mixing this A of open roller, make the mixing thing of B.A in table refers to the raw material of the mixing thing of A, and B is blended in the raw material in the mixing thing of A while referring to the mixing thing of preparation B.
Embodiment
Below show the mixture using in embodiment and comparative example.
Polyethers based polymer ダ イ ソ mono-Co., Ltd.'s epichlorohydrin ethylene oxide allyl glycidyl ether processed " EPION-301 " that ※ 1 forms oxirane compound polymerization;
※ 2 Shiraishi Calcium Kaisha Ltd.'s systems, light calcium carbonate " シ Le バ mono-W ";
※ 3 NOF Corp's systems, パ mono-Network ミ Le D (the theoretical active oxygen amount of dicumyl peroxide is 5.92);
※ 4 Ouchi Shinko Chemical Ind Co., Ltd.'s systems, dithiocar-bamate are vulcanization accelerator " ノ Network セ ラ mono-TTCU ";
※ 5 Asahi Denka Co., Ltd., ester are conductive agent " ア デ カ サ イ ザ mono-LV-70 ";
The ※ 6 emerging KCC of imperial palace thiazoles processed are vulcanization accelerator " ノ Network セ ラ mono-DM ";
The ※ 7 emerging KCC of imperial palace thiurams processed are vulcanization accelerator " ノ Network セ ラ mono-TS ";
※ 8JSR Co., Ltd. system " N250S ";
※ 9 Showa Denko K. K's systems " シ ヨ ウ プ レ Application WXJ ";
※ 10 Sumitomo Chemical Co's systems " エ ス プ レ Application 505A ".
[table 1]
Figure BPA0000186429230000081
[table 2]
Figure BPA0000186429230000082
[table 3]
[table 4]
Figure BPA0000186429230000092
[table 5]
Figure BPA0000186429230000093
[table 6]
Figure BPA0000186429230000101
< volume specific resistance >
By mixing the B of above-mentioned preparation thing sheet, then by gained slice substance press vulcanization 15 minutes at 170 DEG C.The crosslinked thin slice obtaining respectively under 10 DEG C/15%RH environment, under 23 DEG C/50%RH environment, carry out state adjustment under 35 DEG C/85%RH environment, afterwards according to JIS K6271, utilization has been used the Ha イ processed レ ス タ of Mitsubishi Petrochemical Co., Ltd of dual ring electrode to apply the voltage of 10V, measures the volume specific resistance after 1 minute.
The environmental change > of < volume specific resistance
According to the volume specific resistance separately of measuring by volume specific resistance under the 10 DEG C/15%RH environment obtaining, under 35 DEG C/85%RH environment, obtain the environmental change of volume specific resistance.Still it should be noted that, the numerical value of the environmental change of volume specific resistance is less, and the environmental factor dependence of volume specific resistance is less.The environmental change of the application's volume specific resistance is calculated by the difference of the logarithm of the volume specific resistance of (under 35 DEG C/85%RH environment) under the logarithm and hot and humid environment of the volume specific resistance of (under 10 DEG C/15%RH environment) under low temperature and low humidity environment, more specifically, calculate by following formula.
Log 10(10 DEG C × 15%RH volume specific resistance)-log 10(35 DEG C × 85%RH volume specific resistance)
The embodiment being obtained by each test method and the test-results of comparative example are in table 7~table 15.
[table 7]
Figure BPA0000186429230000102
[table 8]
Figure BPA0000186429230000111
[table 9]
Figure BPA0000186429230000112
[table 10]
Figure BPA0000186429230000113
[table 11]
Figure BPA0000186429230000114
[table 12]
Figure BPA0000186429230000121
[table 13]
Figure BPA0000186429230000122
[table 14]
Figure BPA0000186429230000123
[table 15]
As shown in the embodiment of table 7, table 10 and comparative example, compared with not containing the comparative example 1 of (b) copper compound, embodiment 1~5, by containing (a) polyethers based polymer, (b) copper compound, (c) organo-peroxide that oxirane compound polymerization is formed as rubber constituent, improves low resistance (particularly under low temperature and low humidity environment in (under 10 DEG C/15%RH environment) and middle temperature under wet environment (under 23 DEG C/50%RH environment)) and the environmental factor dependence of volume specific resistance.
In addition, although comparative example 2 and comparative example 3 have used the metallic compound except (b) copper compound to replace (b) copper compound, do not improve with comparative example 1 decline of phase specific volume resistivity and the environmental factor dependence of volume specific resistance.And, although the comparative example 4 of table 11 and comparative example 5 have used sulphur to replace (c) organo-peroxide, but have in the vulcanized rubber of rubber combination of sulphur and copper compound in combined hybrid, the decline of volume specific resistance and the environmental factor dependence of volume specific resistance do not improve.From the above results: 1) have in the vulcanized rubber of rubber combination of organo-peroxide and copper compound in combined hybrid, given play to the unexpected effect that reduces volume specific resistance and can reduce the environmental factor dependence of volume specific resistance.In addition, because comparative example 4 and comparative example 5 use sulphur as vulcanizing agent, so with use organo-peroxide as compared with the embodiment 1~5 of vulcanizing agent, think that the contaminative of photoreceptor is high.
Embodiment 6~12nd, is containing (a) as rubber constituent, except comprising the polyethers based polymer that oxirane compound polymerization is formed, also comprise the acrylonitrile butadiene rubber that contains respectively any amount in the semi-conductivity rubber combination of rubber kind except described polyethers based polymer, (b) copper compound, (c) organo-peroxide, neoprene, terpolymer EP rubber as the rubber kind except described polyethers based polymer.In addition, with respect to the cooperation of embodiment 6~12, comparative example 6~12 is not containing (b) copper compound.Result from table 8 and table 12: compared with comparative example 6~12, the low resistance of embodiment 6~12 and the environmental factor dependence of volume specific resistance improve.On the other hand, the rubber constituent of the comparative example 13~18 of table 14, table 15 is respectively 100 % by weight acrylonitrile butadiene rubbers, 100 % by weight neoprenes, 100 % by weight terpolymer EP rubbers, but whether contain (b) copper compound and there is no difference on the environmental factor dependence of volume specific resistance and volume specific resistance, in addition, compared with embodiment 6~12, volume specific resistance is significantly deteriorated.It should be noted that, in comparative example 17 and 18, " 10 DEG C × 15%RH volume specific resistance " and " 35 DEG C × 85%RH volume specific resistance " is too high, has exceeded 10 13Ω cm, therefore measures nothing but environmental change.From the above results: by comprising the polyethers based polymer that oxirane compound polymerization is formed as rubber constituent, and be combined with (b) copper compound and (c) organo-peroxide, can manufacture the contaminative after sulfuration and volume specific resistance is low and the environmental factor dependence of volume specific resistance is little semi-conductivity vulcanized rubber material.
Industrial applicability
As the environmental factor dependence excellence of semi-conductivity rubber combination volume specific resistance in maintaining semi-conductivity of object of the present invention, can be widely used as the development in laser printer, duplicating machine, charged, transfer roll.

Claims (14)

1. a semi-conductivity rubber combination, is characterized in that: contain (a) polyethers based polymer, (b) copper compound, (c) organo-peroxide that oxirane compound polymerization is formed as rubber constituent.
2. semi-conductivity rubber combination according to claim 1, is characterized in that: described polyethers based polymer comprises at least two kinds of unit that are selected from oxyethane, propylene oxide, epoxy chloropropane, glycidyl allyl ether in Component units.
3. semi-conductivity rubber combination according to claim 1 and 2, it is characterized in that: described (b) copper compound is to be selected from least one of the mantoquita of Inorganic Copper compound, carboxylic acid and the mantoquita of dithiocarbamic acid, and wherein said Inorganic Copper compound is selected from cupric oxide, copper hydroxide, copper carbonate, cupric chloride, cupric sulfide, copper sulfate.
4. according to the semi-conductivity rubber combination described in any one in claim 1~3, it is characterized in that: described (b) copper compound contains at least one copper compound that is selected from cupric oxide, copper stearate, cupric dimethyldithiocarbamate.
5. according to the semi-conductivity rubber combination described in any one in claim 1~4, it is characterized in that: as described (a) rubber constituent, further contain the rubber kind except described polyethers based polymer.
6. according to the semi-conductivity rubber combination described in any one in claim 1~5, it is characterized in that: with respect to (a) rubber constituent described in 100 weight parts, the combined amount of described (b) copper compound is below 0.5 weight part.
7. according to the semi-conductivity rubber combination described in any one in claim 1~6, it is characterized in that: the theoretical active oxygen amount taking the content of described (c) organo-peroxide with respect to (a) rubber constituent described in 100 weight parts as X weight part, described (c) organo-peroxide is during as Y (%)
0.4≤X×Y≤200。
8. according to the semi-conductivity rubber combination described in any one in claim 1~7, it is characterized in that: in (a) rubber constituent described in 100 weight parts, contain described polyethers based polymers more than 10 % by weight.
9. according to the semi-conductivity rubber combination described in any one in claim 1~8, it is characterized in that: in (a) rubber constituent described in 100 weight parts, the described polyethers based polymer that contains 10~90 % by weight and the rubber kind except described polyethers based polymer of 10~90 % by weight.
10. according to the semi-conductivity rubber combination described in any one in claim 5~9, it is characterized in that: the rubber kind except described polyethers based polymer is to be selected from natural rubber, synthetic polyisoprene, 1, at least one of 2-polyhutadiene, styrene butadiene ribber, isoprene-isobutylene rubber, ethylene propylene rubber, terpolymer EP rubber, neoprene, chlorosulfonated polyethylene, chlorinatedpolyethylene, acrylic rubber, acrylonitrile butadiene rubber and hydrogenated acrylonitrile divinyl rubber.
11. according to the semi-conductivity rubber combination described in any one in claim 1~10, it is characterized in that: further add (d) conductive agent.
12. 1 kinds of semi-conductivity elastomeric materials, described semi-conductivity elastomeric material is that the semi-conductivity rubber combination sulfuration described in any one in claim 1~11 is formed.
13. 1 kinds of semi-conductivity rubber rollers or semi-conductivity string rubber for no reason, it has used the semi-conductivity elastomeric material described in claim 12.
14. 1 kinds of electronic photographing device materials, described electronic photographing device material right to use require semi-conductivity rubber rollers described in 13 or semi-conductivity for no reason string rubber form.
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