CN109709781B - ECO ion conductive charging roller and preparation method thereof - Google Patents
ECO ion conductive charging roller and preparation method thereof Download PDFInfo
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- CN109709781B CN109709781B CN201811519147.6A CN201811519147A CN109709781B CN 109709781 B CN109709781 B CN 109709781B CN 201811519147 A CN201811519147 A CN 201811519147A CN 109709781 B CN109709781 B CN 109709781B
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Abstract
The invention relates to the technical field of charging rollers, in particular to an ECO ion conductive charging roller and a preparation method thereof, wherein the charging roller comprises a roller shaft, a foamed conductive sponge layer sleeved outside the roller shaft, and an ECO ion conductive rubber layer sleeved outside the foamed conductive sponge layer; the roll shaft is an aluminum core, and the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.60% -1.80%, Mg: 2.30% -2.50%, Mn: 0.40 to 0.60 percent of Fe, less than or equal to 0.50 percent of Si, the balance of Al and inevitable impurities, the content of single impurity is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent. The charging roller adopts the aluminum core as the roller shaft, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is low in density, high in strength, good in plasticity and easy to process.
Description
Technical Field
The invention relates to the technical field of charging rollers, in particular to an ECO ion conductive charging roller and a preparation method thereof.
Background
The charging roller used on the printing equipment is in contact with the photosensitive drum to rotate, so that the photosensitive drum is uniformly charged, and an exposed electrostatic latent image is generated. The roller shaft of the existing charging roller is generally made of stainless steel, and the stainless steel is expensive, difficult to machine, poor in corrosion resistance and easy to rust, so that the service life of the charging roller is greatly influenced.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an ECO ion conductive charging roller which adopts an aluminum core as a roller shaft, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is low in density, high in strength, good in plasticity and easy to process.
The invention also aims to provide a preparation method of the ECO ion conductive charging roller, which has the advantages of simple steps, convenient operation and control, stable quality, high production efficiency and low production cost and can be used for large-scale industrial production.
The purpose of the invention is realized by the following technical scheme: an ECO ion conductive charging roller comprises a roller shaft, a foaming conductive sponge layer sleeved outside the roller shaft, and an ECO ion conductive rubber layer sleeved outside the foaming conductive sponge layer; the roll shaft is an aluminum core, and the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.60% -1.80%, Mg: 2.30% -2.50%, Mn: 0.40 to 0.60 percent of Fe, less than or equal to 0.50 percent of Si, the balance of Al and inevitable impurities, the content of single impurity is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent.
The charging roller aluminum core adopts the Cu element, and the dosage of the Cu element is controlled to be 1.60-1.80%, so that the charging roller has a good solid solution strengthening effect; the aluminum core of the charging roller adopts Mg element, and the dosage of the Mg element is controlled to be 2.30-2.50%, so that the aluminum core has high strength, good weldability and good corrosion resistance; according to the charging roller aluminum core, the Mn element is adopted, and the dosage of the Mn element is controlled to be 0.40-0.60%, so that the recrystallization temperature can be increased, and recrystallized grains can be obviously refined; the aluminum core of the charging roller has better processing performance by adopting Fe element and controlling the using amount of the Fe element to be less than or equal to 0.50 percent; the charging roller aluminum core of the invention adopts Si element and controls the using amount to be less than or equal to 0.50 percent, thereby improving the tensile strength, the hardness, the machinability and the strength at high temperature and reducing the elongation.
By adopting the elements and strictly controlling the weight percentage of each element, the aluminum core of the charging roller has the advantages of excellent electrical conductivity, thermal conductivity and corrosion resistance, low density, high strength, good plasticity and easy processing.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
60-80 parts of chlorohydrin rubber
2-5 parts of ionic conductive agent
6-10 parts of accelerator
4-8 parts of active agent
1-3 parts of bridging agent
1-2 parts of acid absorbent
1-2 parts of dispersant
3-5 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 0.8-1.2:1. According to the invention, by strictly controlling the polymerization monomer and the proportion of the chlorohydrin rubber, the prepared ECO ion conductive rubber layer has good elasticity and good cold resistance.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide in a weight ratio of 2-4:1-2: 1. The ECO ion conductive rubber layer can improve the advantages of conductive property, physical property and the like of the conductive material by strictly controlling the type, compounding and proportion of the ion conductive agent, so that the ECO ion conductive rubber layer has excellent and stable conductive property and mechanical property.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 0.5-1.5:1.5-2.5: 1. The ECO ionic conductive rubber layer can promote the vulcanization effect by strictly controlling the type, compounding and proportion of the accelerator, shorten the vulcanization time, reduce the vulcanization temperature, reduce the consumption of the vulcanizing agent and improve the physical and mechanical properties of the rubber.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 0.8-1.2:1.4-2.4: 1. The ECO ionic conductive rubber layer can promote the vulcanization process by strictly controlling the variety, compounding and proportion of the active agent, can enable the accelerator to exert the maximum capacity, reduces the using amount of the accelerator and shortens the vulcanization time.
The bridging agent is caprolactam enclosed aromatic polyisocyanate. The ECO ionic conduction rubber layer provided by the invention can improve the water resistance, chemical resistance, wear resistance, adhesive force, mechanical and mechanical properties and the like of the ECO ionic conduction rubber layer by adopting caprolactam enclosed type aromatic polyisocyanate as a bridging agent.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 2-4: 1. The ECO ion conductive rubber layer can absorb hydrogen chloride gas generated in the processing process of chlorohydrin rubber by strictly controlling the variety, compounding and proportion of an acid-absorbing agent, and improve the tensile strength and elongation at break of the ECO ion conductive rubber layer.
The dispersing agent is a mixture of oleamide and polyethylene glycol in a weight ratio of 1-2: 1. The ECO ion conductive rubber layer can improve the dispersion performance of the filler and improve the strength of the ECO ion conductive rubber layer by strictly controlling the type, compounding and proportion of the dispersant.
The processing aid is a mixture consisting of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:0.5-1.5: 1.5-2.5. The ECO ionic conductive rubber layer can improve the fluidity of the material and the demoulding performance of products in the processing process of the material by strictly controlling the type, compounding and proportion of the processing aid.
Preferably, the chemical composition of the aluminum core satisfies the following formula:
5.6%≤2Cu+Mg≤6.0% ……（1）
1.2%≤2Mn+Fe+Si≤2.0% ……（2）。
by meeting the requirements of the processes, the Cu, Mg, Mn, Fe and Si elements in the aluminum core have the advantages of excellent electrical conductivity, thermal conductivity and corrosion resistance, low density, high strength, good plasticity and easy processing.
Preferably, the aluminum core further comprises Ca: 0.5% -1.5%, Cr: 0.15% -0.35% and Zn: 0.04 to 0.08 percent.
The charging roller aluminum core adopts the Ca element, and the using amount of the Ca element is controlled to be 0.5-1.5%, so that the conductivity of the aluminum core can be improved, and the processability of the aluminum alloy can be improved; the charging roller aluminum core adopts the Cr element, and the dosage of the Cr element is controlled to be 0.15-0.35%, so that the charging roller aluminum core has a certain strengthening effect on the alloy, and can improve the toughness of the alloy and reduce the stress corrosion cracking sensitivity; the charging roller aluminum core adopts Zn element, and the dosage of the Zn element is controlled to be 0.04-0.08%, so that the tensile strength and the yield strength can be obviously increased.
More preferably, the chemical composition of the aluminum core also satisfies the following formula:
2.2%≤Ca+4Cr+15Zn≤3.6% ……（3）。
the Ca, Cr and Zn elements in the aluminum core meet the requirements of the process, and the prepared aluminum core has the advantages of excellent electrical conductivity, thermal conductivity and corrosion resistance, low density, high strength, good plasticity and easiness in processing.
Preferably, the aluminum core further includes Li: 0.2% -0.4%, Zr: 0.02% -0.06% and V: 0.01 to 0.05 percent.
According to the charging roller aluminum core, the Li element is adopted, and the using amount of the Li element is controlled to be 0.2-0.4%, so that the density of the aluminum alloy can be reduced, the strength and the rigidity of the aluminum alloy are improved, and the effect of light weight is achieved; the charging roller aluminum core adopts Zr element, and the using amount of the Zr element is controlled to be 0.02-0.06%, so that the recrystallization process can be hindered, and recrystallized grains can be refined; the charging roller aluminum core provided by the invention adopts the V element, and the dosage of the V element is controlled to be 0.01-0.05%, so that the grain refining effect is realized, the recrystallization structure can be refined, and the recrystallization temperature is increased.
More preferably, the chemical composition of the aluminum core also satisfies the following formula:
0.8%≤Li+15Zr+10V≤1.6% ……（4）。
the Li, Zr and V elements in the aluminum core meet the requirements of the process, and the prepared aluminum core has the advantages of excellent electrical conductivity, thermal conductivity and corrosion resistance, low density, high strength, good plasticity and easiness in processing.
Preferably, the aluminum core further includes Ti: 0.1% -0.3%, B: 0.04% -0.08% and Sr: 0.01 to 0.05 percent.
The charging roller aluminum core adopts Ti element, and the dosage of the Ti element is controlled to be 0.1-0.3%, so that the mechanical property of the aluminum core can be improved under the condition of keeping conductivity; the charging roller aluminum core adopts the element B, and the dosage of the element B is controlled to be 0.04-0.08%, so that the charging roller aluminum core has the function of refining casting structures and welding seam structures; the charging roller aluminum core of the invention adopts Sr element, and the dosage of the Sr element is controlled to be 0.01-0.05%, thus improving the tensile strength, yield strength and elongation of the aluminum core, reducing the size of primary crystal silicon particles and improving the plastic processing performance.
More preferably, the chemical composition of the aluminum core also satisfies the following formula:
0.6%≤Ti+5B+10Sr≤1.0% ……（5）。
the Ti, B and Sr elements in the aluminum core meet the requirements of the process, and the prepared aluminum core has the advantages of excellent electrical conductivity, thermal conductivity and corrosion resistance, low density, high strength, good plasticity and easiness in processing.
Preferably, the aluminum core further comprises a misch metal Re: 0.05% -0.15%, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 2-4: 1-3: 0.4-0.8: 1.5-2.5: 0.8-1.2:1, in a mixture of the components.
Re is mixed rare earth containing 6 light rare earth elements of La, Ce, Pr, Nd, Pm and Sm, the light rare earth elements have active physical and chemical properties, can react with impurity elements such as hydrogen, oxygen, manganese, zinc, chromium and the like in the aluminum alloy liquid to generate a high-melting-point and high-stability rare earth compound, has an effect of deeply purifying the aluminum alloy liquid, and can eliminate the harmful influence of the impurity elements on the mechanical property. In addition, the rare earth compound has the characteristics of high melting point, high hardness and good thermal stability, and the segregation in phase boundaries and grain boundaries can improve the strength and creep resistance of the phase boundaries and the grain boundaries, so that the strength and heat resistance of the aluminum alloy are further improved. A great deal of experimental research of the inventor shows that the effect of adding the mixed rare earth containing 6 light rare earth elements of La, Ce, Pr, Nd, Pm and Sm is better than the effect of adding one or a few light rare earth elements, therefore, 0.05-0.15% of mixed rare earth is selectively added, and the preferable addition amount of the mixed rare earth is 0.1%.
The invention adopts La, Ce, Pr, Nd, Pm and Sm as mixed rare earth, and controls the mass ratio of La, Ce, Pr, Nd, Pm and Sm to be 2-4: 1-3: 0.4-0.8: 1.5-2.5: 0.8-1.2:1, crystal grains can be refined, secondary spacing is reduced, gas and impurities in the alloy are reduced, and the impurity phase tends to be spheroidized; but also can reduce the surface tension of the fused mass, increase the fluidity and be beneficial to casting into ingots.
A preparation method of an ECO ion conductive charging roller comprises the following steps:
(1) preparing a roll shaft: preparing an aluminum alloy raw material into an aluminum alloy ingot, carrying out homogenization annealing on the aluminum alloy ingot, forming the aluminum alloy ingot into an extrusion material after the homogenization annealing, carrying out aging treatment on the extrusion material, and obtaining a roll shaft after the aging treatment;
(2) cutting: cutting the required size of the charging roller to the required size of the foamed conductive sponge layer;
(3) cotton sleeving: sleeving the foamed conductive sponge with the cut size on a roll shaft;
(4) polishing: polishing the charging roller sleeved with the foamed conductive sponge to a required size;
(5) preparing an ECO ionic conductive rubber layer: weighing raw materials required by the ECO ion conductive rubber layer according to the weight ratio, and preparing the ECO ion conductive rubber layer through mixing, granulating and extrusion molding;
(6) sleeving a sleeve: and sleeving the ECO ion conductive rubber layer on the outer side of the foamed conductive sponge to obtain the ECO ion conductive sponge charging roller.
The invention has the beneficial effects that: the charging roller adopts the aluminum core as the roller shaft, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is low in density, high in strength, good in plasticity and easy to process.
The preparation method has the advantages of simple steps, convenient operation and control, stable quality, high production efficiency and low production cost, and can be used for large-scale industrial production.
According to the charging roller, the ECO ion conductive rubber layer is adopted, and the ECO ion conductive rubber layer adopts the ion conductive agent as the conductive filler, so that the advantages of conductive property, physical property and the like of the conductive material can be improved, the ECO ion conductive rubber layer has excellent and stable conductive performance and mechanical property, and the prepared charging roller is good in conductivity, good in mechanical property, good in durability and long in service life.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
An ECO ion conductive charging roller comprises a roller shaft, a foaming conductive sponge layer sleeved outside the roller shaft, and an ECO ion conductive rubber layer sleeved outside the foaming conductive sponge layer; the roll shaft is an aluminum core, and the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.60%, Mg: 2.50%, Mn: 0.40%, Fe: 0.50%, Si: 0.50 percent, the balance of Al and inevitable impurities, the content of single impurities is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the aluminum core further comprises Ca: 0.5%, Cr: 0.35% and Zn: 0.08 percent.
The aluminum core further includes Li: 0.2%, Zr: 0.06% and V: 0.05 percent.
The aluminum core further includes Ti: 0.1%, B: 0.08% and Sr: 0.05 percent.
The aluminum core further comprises a misch metal Re: 0.05%, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 2:1: 0.4: 1.5: 0.8:1, in a mixture of the components.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
60 parts of chlorohydrin rubber
2 portions of ionic conductive agent
6 portions of accelerant
4 portions of active agent
Bridging agent 1 part
Acid absorbent 1 part
1 part of dispersant
And 3 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 0.8:1.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide in a weight ratio of 2:1: 1.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 0.5:1.5: 1.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 0.8:1.4: 1.
The bridging agent is caprolactam enclosed aromatic polyisocyanate.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 2:1.
The dispersing agent is a mixture of oleamide and polyethylene glycol in a weight ratio of 1:1.
The processing aid is a mixture of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:0.5: 1.5.
A preparation method of an ECO ion conductive charging roller comprises the following steps:
(1) preparing a roll shaft: preparing an aluminum alloy raw material into an aluminum alloy ingot, carrying out homogenization annealing on the aluminum alloy ingot, forming the aluminum alloy ingot into an extrusion material after the homogenization annealing, carrying out aging treatment on the extrusion material, and obtaining a roll shaft after the aging treatment;
(2) cutting: cutting the required size of the charging roller to the required size of the foamed conductive sponge layer;
(3) cotton sleeving: sleeving the foamed conductive sponge with the cut size on a roll shaft;
(4) polishing: polishing the charging roller sleeved with the foamed conductive sponge to a required size;
(5) preparing an ECO ionic conductive rubber layer: weighing raw materials required by the ECO ion conductive rubber layer according to the weight ratio, and preparing the ECO ion conductive rubber layer through mixing, granulating and extrusion molding;
(6) sleeving a sleeve: and sleeving the ECO ion conductive rubber layer on the outer side of the foamed conductive sponge to obtain the ECO ion conductive sponge charging roller.
Example 2
This embodiment is different from embodiment 1 described above in that: the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.65%, Mg: 2.45%, Mn: 0.45, Fe: 0.40%, Si: 0.40 percent, the balance of Al and inevitable impurities, the content of single impurities is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the aluminum core further comprises Ca: 0.8%, Cr: 0.3% and Zn: 0.07 percent.
The aluminum core further includes Li: 0.25%, Zr: 0.05% and V: 0.04 percent.
The aluminum core further includes Ti: 0.15%, B: 0.07% and Sr: 0.04 percent.
The aluminum core further comprises a misch metal Re: 0.08 percent, wherein the Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 2.5: 1.5: 0.5: 1.8: 0.9:1, in a mixture of the components.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
65 parts of chlorohydrin rubber
Ionic conductive agent 3 parts
Accelerator 7 parts
5 portions of active agent
Bridging agent 1.5 parts
Acid absorbent 1.2 parts
Dispersant 1.2 parts
3.5 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 0.9:1.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide according to the weight ratio of 2.5:1.2: 1.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 0.8:1.8: 1.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 0.9:1.6: 1.
The bridging agent is caprolactam enclosed aromatic polyisocyanate.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 2.5:1.
The dispersing agent is a mixture of oleamide and polyethylene glycol in a weight ratio of 1.2:1.
The processing aid is a mixture of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:0.8: 1.8.
Example 3
This embodiment is different from embodiment 1 described above in that: the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.70%, Mg: 2.40%, Mn: 0.50%, Fe: 0.30%, Si: 0.30 percent, the balance of Al and inevitable impurities, the content of single impurities is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the aluminum core further comprises Ca: 1%, Cr: 0.25% and Zn: 0.06 percent.
The aluminum core further includes Li: 0.3%, Zr: 0.04% and V: 0.03 percent.
The aluminum core further includes Ti: 0.2%, B: 0.06% and Sr: 0.03 percent.
The aluminum core further comprises a misch metal Re: 0.1 percent, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 3: 2: 0.6: 2:1:1, in a mixture of the components.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
72.99 parts of chlorohydrin rubber
Ionic conductive agent 3.64 parts
Accelerator 8.03 parts
5.84 parts of active agent
2.19 parts of bridging agent
Acid absorbent 1.46 parts
Dispersant 1.46 parts
4.39 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 1:1.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide in a weight ratio of 3:1.5: 1.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 1:2: 1.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 1:1.8: 1.
The bridging agent is caprolactam enclosed aromatic polyisocyanate.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 3:1.
The dispersing agent is a mixture of oleamide and polyethylene glycol in a weight ratio of 1.5:1.
The processing aid is a mixture of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:1: 2.
Example 4
This embodiment is different from embodiment 1 described above in that: the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.75%, Mg: 2.35%, Mn: 0.55%, Fe: 0.20%, Si: 0.20 percent, the balance of Al and inevitable impurities, the content of single impurities is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the aluminum core further comprises Ca: 1.2%, Cr: 0.2% and Zn: 0.05 percent.
The aluminum core further includes Li: 0.35%, Zr: 0.03% and V: 0.02 percent.
The aluminum core further includes Ti: 0.25%, B: 0.05% and Sr: 0.02 percent.
The aluminum core further comprises a misch metal Re: 0.12 percent, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 3.5: 2.5: 0.7: 2.2: 1.1:1, in a mixture of the components.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
75 parts of chlorohydrin rubber
4 portions of ionic conductive agent
9 portions of accelerant
Active agent 7 parts
2.5 parts of bridging agent
Acid absorbent 1.8 parts
Dispersant 1.8 parts
4.5 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 1.1: 1.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide according to the weight ratio of 3.5:1.8: 1.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 1.2:2.2: 1.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 1.1:2: 1.
The bridging agent is caprolactam enclosed aromatic polyisocyanate.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 3.5:1.
The dispersant is a mixture of oleamide and polyethylene glycol in a weight ratio of 1.8: 1.
The processing aid is a mixture of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:1.2: 2.2.
Example 5
This embodiment is different from embodiment 1 described above in that: the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.80%, Mg: 2.30%, Mn: 0.60%, Fe: 0.10%, Si: 0.10 percent, the balance of Al and inevitable impurities, the content of single impurities is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the aluminum core further comprises Ca: 1.5%, Cr: 0.15% and Zn: 0.04 percent.
The aluminum core further includes Li: 0.4%, Zr: 0.02% and V: 0.01 percent.
The aluminum core further includes Ti: 0.3%, B: 0.04% and Sr: 0.01 percent.
The aluminum core further comprises a misch metal Re: 0.15 percent, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 4: 3: 0.8: 2.5:1.2:1, in a mixture of the components.
The ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
80 parts of chlorohydrin rubber
5 portions of ionic conductive agent
Accelerator 10 parts
Active agent 8 parts
3 parts of bridging agent
Acid absorbent 2 parts
Dispersant 2 parts
And 5 parts of a processing aid.
The chlorohydrin rubber is a copolymer prepared from epichlorohydrin and ethylene oxide in a molar ratio of 1.2:1.
The ionic conductive agent is a mixture of lithium cobaltate, lithium nickel manganese oxide and lithium nickel cobalt manganese oxide in a weight ratio of 4:2: 1.
The accelerator is a mixture of N-cyclohexyl-2-benzothiazole sulfonamide, tetramethyl thiuram disulfide and diphenyl guanidine in a weight ratio of 1.5:2.5: 1.
The active agent is a mixture of magnesium oxide, calcium hydroxide and dibutyl oleylamine in a weight ratio of 1.2:2.4: 1.
The bridging agent is caprolactam enclosed aromatic polyisocyanate.
The acid absorbent is a mixture of hydrotalcite and 4A zeolite in a weight ratio of 4: 1.
The dispersing agent is a mixture of oleamide and polyethylene glycol in a weight ratio of 2:1.
The processing aid is a mixture of calcium stearate, magnesium stearate and stearic acid in a weight ratio of 1:1.5: 2.5.
Tests prove that the aluminum core of the charging roller has the tensile strength of more than 435MPa at room temperature, the yield strength of more than 390MPa, the elongation of more than 15 percent and the electrical conductivity of 42 percent IACS, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and has the advantages of low density, high strength, good plasticity and easy processing.
The hardness of the charging roller can reach 85-95, the resistance is 0.8-1.2 MOmega, the resistance value is constant, no pinhole phenomenon exists, the roller has good high-temperature high-humidity non-messiness, no precipitate or point discharge phenomenon exists, no pollution is caused to a drum core, a printed manuscript is clear, the blackness is uniform, no bottom ash or ghost exists, the wear resistance is good, the wear resistance times can reach ten thousands of times, and the service life is long.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (8)
1. An ECO ion conductive charging roller comprises a roller shaft, a foaming conductive sponge layer sleeved outside the roller shaft, and an ECO ion conductive rubber layer sleeved outside the foaming conductive sponge layer; the method is characterized in that: the roll shaft is an aluminum core, and the chemical components of the aluminum core comprise the following elements in percentage by weight: cu: 1.60% -1.80%, Mg: 2.30% -2.50%, Mn: 0.40 to 0.60 percent of Fe, less than or equal to 0.50 percent of Si, the balance of Al and inevitable impurities, the content of single impurity is less than or equal to 0.05 percent, and the total content is less than or equal to 0.15 percent;
the chemical composition of the aluminum core satisfies the following formula:
5.6%≤2Cu+Mg≤6.0% ……（1）
1.2%≤2Mn+Fe+Si≤2.0% ……（2）；
the aluminum core further comprises a misch metal Re: 0.05% -0.15%, wherein Re is formed by La, Ce, Pr, Nd, Pm and Sm according to the mass ratio of 2-4: 1-3: 0.4-0.8: 1.5-2.5: 0.8-1.2: 1;
the ECO ionic conduction rubber layer is prepared from the following raw materials in parts by weight:
60-80 parts of chlorohydrin rubber
2-5 parts of ionic conductive agent
6-10 parts of accelerator
4-8 parts of active agent
1-3 parts of bridging agent
1-2 parts of acid absorbent
1-2 parts of dispersant
3-5 parts of a processing aid.
2. The ECO ion conductive type charging roller according to claim 1, wherein: the aluminum core further comprises Ca: 0.5% -1.5%, Cr: 0.15% -0.35% and Zn: 0.04 to 0.08 percent.
3. The ECO ion conductive type charging roller according to claim 2, wherein: the chemical composition of the aluminum core also satisfies the following formula:
2.2%≤Ca+4Cr+15Zn≤3.6% ……（3）。
4. the ECO ion conductive type charging roller according to claim 2, wherein: the aluminum core further includes Li: 0.2% -0.4%, Zr: 0.02% -0.06% and V: 0.01 to 0.05 percent.
5. The ECO ion conductive type charging roller according to claim 4, wherein: the chemical composition of the aluminum core also satisfies the following formula:
0.8%≤Li+15Zr+10V≤1.6% ……（4）。
6. the ECO ion conductive type charging roller according to claim 4, wherein: the aluminum core further includes Ti: 0.1% -0.3%, B: 0.04% -0.08% and Sr: 0.01 to 0.05 percent.
7. The ECO ion conductive type charging roller according to claim 6, wherein: the chemical composition of the aluminum core also satisfies the following formula:
0.6%≤Ti+5B+10Sr≤1.0% ……（5）。
8. the method for producing an ECO ion conductive type charging roller according to any one of claims 1 to 7, wherein: the method comprises the following steps:
(1) preparing a roll shaft: preparing an aluminum alloy raw material into an aluminum alloy ingot, carrying out homogenization annealing on the aluminum alloy ingot, forming the aluminum alloy ingot into an extrusion material after the homogenization annealing, carrying out aging treatment on the extrusion material, and obtaining a roll shaft after the aging treatment;
(2) cutting: cutting the required size of the charging roller to the required size of the foamed conductive sponge layer;
(3) cotton sleeving: sleeving the foamed conductive sponge with the cut size on a roll shaft;
(4) polishing: polishing the charging roller sleeved with the foamed conductive sponge to a required size;
(5) preparing an ECO ionic conductive rubber layer: weighing raw materials required by the ECO ion conductive rubber layer according to the weight ratio, and preparing the ECO ion conductive rubber layer through mixing, granulating and extrusion molding;
(6) sleeving a sleeve: and sleeving the ECO ion conductive rubber layer on the outer side of the foamed conductive sponge to obtain the ECO ion conductive sponge charging roller.
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