CN110527156B - Rubber composition for printing rubber roller and preparation method and application thereof - Google Patents
Rubber composition for printing rubber roller and preparation method and application thereof Download PDFInfo
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- CN110527156B CN110527156B CN201910876985.7A CN201910876985A CN110527156B CN 110527156 B CN110527156 B CN 110527156B CN 201910876985 A CN201910876985 A CN 201910876985A CN 110527156 B CN110527156 B CN 110527156B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of rubber products, in particular to a rubber composition for a printing rubber roller and a preparation method and application thereof. The invention provides a rubber composition for a printing rubber roller, which comprises the following components: nitrile butadiene rubber, polyvinyl chloride, white carbon black, a plasticizer, zinc oxide, magnesium oxide, an anti-aging agent, sulfur, a vulcanization accelerator, a sulfur carrier and a PVC heat stabilizer; the plasticizer comprises: polyester plasticizers, ointments, and liquid butyronitrile. The rubber composition adopts the nitrile rubber/polyvinyl chloride blended rubber as a main body, and has the advantages of good ozone resistance, weather resistance, mechanical property and easy coloring; the polyester plasticizer is used as a main plasticizer, and ointment and liquid butyronitrile macromolecule plasticizer are used for auxiliary plasticization to replace DOP, so that the precipitation of the plasticizer is reduced, the solvent resistance of the plasticizer is improved, the problems of swelling, shrinkage or corrosion of rubber caused by solvent cleaning are avoided, and meanwhile, the elasticity and the mechanical property are improved.
Description
Technical Field
The invention relates to the technical field of rubber products, in particular to a rubber composition for a printing rubber roller and a preparation method and application thereof.
Background
In the field of image-text printing, a rubber roller is one of the most important matching parts in printing equipment, plays roles of inking, ink homogenizing, ink transferring, inking and the like in printing, directly influences the printing quality by the quality of the rubber roller, and is a basic condition for producing high-quality printed matters. Various solvents are used in the preparation of printing inks, such as diesel oil, gasoline, fountain oil, kerosene, etc., depending on the effect and purpose of use. When different colors of ink are converted, the outer rubber of the printing rubber roller needs to be cleaned by a solvent. These solvents cause swelling or shrinkage of the rubber after a certain period of use, and the rubber surface is corroded, swelled or shrunk to cause rubber defects, thereby reducing printing accuracy.
Disclosure of Invention
The invention provides a rubber composition for a printing rubber roller and a preparation method and application thereof, and solves the problem that the printing precision is reduced due to rubber defect caused by swelling, shrinkage and corrosion easily caused by cleaning of rubber at the outer layer of the rubber roller by using a solvent.
The specific technical scheme is as follows:
the invention provides a rubber composition for a printing rubber roller, which comprises the following components:
nitrile butadiene rubber, polyvinyl chloride, white carbon black, a plasticizer, zinc oxide, magnesium oxide, an anti-aging agent, sulfur, a vulcanization accelerator, a sulfur carrier and a PVC heat stabilizer;
the plasticizer comprises: polyester plasticizers, ointments, and liquid butyronitrile.
It should be noted that, in the conventional rubber composition for printing roller, a large amount of small molecular plasticizer Dioctyl Phthalate (DOP) is usually filled to reduce the hardness of the rubber, but during the soaking process of the cleaning solvent, the rubber absorbs the solvent to swell, and the DOP is easily separated out from the rubber, so as to increase the hardness of the roller and further reduce the service life of the roller.
The nitrile rubber/polyvinyl chloride blended rubber has the advantages of good ozone resistance, weather resistance, mechanical property and easy coloring. Compared with the traditional small molecular plasticizer, the polyester plasticizer, the ointment and the liquid butyronitrile have larger molecular weight, wherein the molecular weight of the plasticizer is 1000-8000, and the molecular weight of the liquid butyronitrile is preferably 6000. The polyester plasticizer is used as a main plasticizer, macromolecules such as factice, liquid butyronitrile and the like are used as auxiliary plasticizers to plasticize the rubber roller rubber, DOP is replaced, the plasticizer is difficult to precipitate in a solvent due to large molecular weight, the extraction resistance of a rubber comprehensive system can be improved, the precipitation of the plasticizer is reduced, the solvent resistance of the rubber is improved, the problems of swelling, shrinkage or corrosion of the rubber caused by solvent cleaning are avoided, and meanwhile, the elasticity and the mechanical property are improved.
Preferably, the composition comprises the following components in parts by weight:
80-100 parts of nitrile rubber, 35-50 parts of polyvinyl chloride, 20-40 parts of white carbon black, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 0-2 parts of an anti-aging agent, 1.8-3 parts of sulfur, 3-6 parts of a vulcanization accelerator, 0-2 parts of a sulfur carrier, 2-3 parts of a PVC heat stabilizer, 70-90 parts of a polyester plasticizer, 25-35 parts of factice and 5-15 parts of liquid butyronitrile.
Preferably, by mass, 90-100 parts of nitrile rubber, 40-50 parts of polyvinyl chloride, 20-40 parts of white carbon black, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 0-2 parts of an anti-aging agent, 1.8-3 parts of sulfur, 3-6 parts of a vulcanization accelerator, 0-2 parts of a sulfur-carrying body, 2-3 parts of a PVC heat stabilizer, 70-90 parts of a polyester plasticizer, 25-35 parts of the factice and 5-15 parts of liquid butyronitrile.
Preferably, by mass, 100 parts of nitrile rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent, 1.8 parts of sulfur, 3.5 parts of a vulcanization accelerator, 1 part of a sulfur carrier, 2 parts of a PVC heat stabilizer, 80 parts of a polyester plasticizer, 25 parts of factice and 10 parts of liquid butyronitrile.
Preferably, by mass, 90 parts of nitrile rubber, 50 parts of polyvinyl chloride, 30 parts of white carbon black, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent, 1.8 parts of sulfur, 3.5 parts of a vulcanization accelerator, 1 part of a sulfur carrier, 2 parts of a PVC heat stabilizer, 100 parts of a polyester plasticizer, 35 parts of factice and 10 parts of liquid butyronitrile; or
100 parts of nitrile butadiene rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent, 1.8 parts of sulfur, 1.5 parts of a vulcanization accelerator, 1 part of a sulfur-carrying body, 2 parts of a PVC heat stabilizer, 80 parts of a polyester plasticizer, 25 parts of factice and 10 parts of liquid butyronitrile.
Preferably, the molecular weight of the polyester plasticizer is 2000-.
Preferably, the anti-aging agent is one or more of 2-mercaptobenzimidazole, an anti-aging agent MB, an anti-aging agent RD, an anti-aging agent 4010NA and an anti-aging agent 445, and more preferably the anti-aging agent MB.
Preferably, the sulfur carrier is one or more of sulfur carrier DTDM, sulfur carrier DMDT, sulfur carrier TDTM and sulfur carrier TMTS, preferably sulfur carrier DTDM.
In the invention, the nitrile rubber is one or more of 3355 nitrile rubber, 1052 nitrile rubber and 1051 nitrile rubber, and is preferably 3355 nitrile rubber.
The polyester plasticizer is one or more of polypropylene sebacate, polybutylene sebacate and polybutylene oxalate, and is preferably polypropylene sebacate;
the vulcanization accelerator is accelerator PZ (zinc dimethyldithiocarbamate) and/or accelerator M (2-mercaptobenzothiazole), more preferably accelerator PZ or accelerator M;
the ointment is white ointment;
the PVC heat stabilizer is one or more of zinc stearate, calcium stearate, barium stearate and lead stearate, and preferably lead stearate.
Preferably, the mass ratio of the polyester plasticizer to the ointment is 3: 1-4: 1. More preferably 3.2: 1.
the invention also provides a preparation method of the rubber composition for the printing rubber roller, which comprises the following steps:
step 1: mixing the nitrile rubber, polyvinyl chloride, white carbon black, a plasticizer, zinc oxide, magnesium oxide, an anti-aging agent MB, sulfur, a vulcanization accelerator, a sulfur carrier and a PVC heat stabilizer to obtain mixed rubber;
step 2: plasticating the mixed rubber, thinly passing for 4 times, and rolling for 4 times to obtain the rubber composition for the printing rubber roller.
In the invention, the mixing device in the step 1 is an internal mixer; the mixing time is 10-15 min, the temperature is 140-150 ℃, and the preferred temperature is 140 ℃ and 15 min; step 2, after rolling for 4 times, before obtaining the rubber composition for the printing rubber roller, the method further comprises the following steps: standing the rubber material after being rolled out for 24 hours at room temperature.
The invention also provides a printing rubber roller which comprises a roller core and the rubber composition for the printing rubber roller, wherein the rubber composition is coated on the outer surface of the roller core.
In the invention, the material of the roller core is iron; the preparation method of the printing rubber roller comprises the following steps: injecting the rubber material which is parked for 24 hours into a mold, wrapping the roller core, stopping injecting the rubber material after the rubber material overflows, and then vulcanizing to obtain the printing rubber roller; the vulcanizing time is 4-6 h, the temperature is 145-160 ℃, and the preferable time is 5h and 155 ℃.
According to the technical scheme, the invention has the following advantages:
the invention provides a rubber composition for a printing rubber roller, which comprises the following components: nitrile butadiene rubber, polyvinyl chloride, white carbon black, a plasticizer, zinc oxide, magnesium oxide, an anti-aging agent, sulfur, a vulcanization accelerator, a sulfur carrier and a PVC heat stabilizer; the plasticizer comprises: polyester plasticizers, ointments, and liquid butyronitrile.
According to the invention, the nitrile rubber/polyvinyl chloride blended rubber is adopted as a main body, so that the ozone resistance, the weather resistance, the mechanical property and the easy coloring are realized; the polyester plasticizer is used as a main plasticizer, and the ointment and the liquid butyronitrile macromolecule plasticizer are used for assisting plasticization to replace DOP, so that precipitation of the plasticizer is reduced, the solvent resistance of the plasticizer is improved, the problems of swelling, shrinkage or corrosion of rubber caused by solvent cleaning are solved, the elasticity and the mechanical property are improved, and the service life is prolonged.
Detailed Description
The embodiment of the invention provides a rubber composition for a printing rubber roller and a preparation method and application thereof, which are used for solving the problem that the printing precision is reduced due to rubber defect caused by swelling, shrinkage or corrosion easily caused by cleaning of rubber at the outer layer of the rubber roller by using a solvent.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, all the raw materials and reagents are purchased from the market, wherein the nitrile rubber is Ningbo cis NBR 3355; the polyvinyl chloride is TPM-31 of the Asia-West brand.
Example 1
The rubber composition for the printing rubber roller is prepared from the following components:
100 parts of 3355 parts of nitrile rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 25 parts of white factice, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent MB, 1.8 parts of sulfur, 1.5 parts of an accelerator BZ, 2 parts of an accelerator M, 1 part of a sulfur-carrying body DTDM, 80 parts of polypropylene sebacate with the molecular weight of 3000, 10 parts of liquid nitrile rubber with the molecular weight of 6000 and 2 parts of lead stearate.
Adding the components into a high-temperature internal mixer for internal mixing at 140 ℃ for 15min, and uniformly mixing to obtain mixed rubber; adding the mixed rubber into an open mill, allowing the mixed rubber to pass through for 4 times, rolling for 4 times, then discharging to obtain the rubber composition for the printing rubber roller, and standing at room temperature for 24 hours for later use.
Example 2
The embodiment is a preparation of the rubber composition for the printing rubber roller:
90 parts of 3355 parts of nitrile butadiene rubber, 50 parts of polyvinyl chloride, 30 parts of white carbon black, 35 parts of white factice, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent MB, 1.8 parts of sulfur, 1.5 parts of an accelerator BZ, 2 parts of an accelerator M, 1 part of a sulfur-carrying body DTDM, 100 parts of polypropylene sebacate with the molecular weight of 3000, 10 parts of liquid butyronitrile and 2 parts of lead stearate.
Adding the components into a high-temperature internal mixer for internal mixing at 140 ℃ for 15min, and uniformly mixing to obtain mixed rubber; adding the mixed rubber into an open mill, allowing the mixed rubber to pass through for 4 times, rolling for 4 times, then discharging to obtain the rubber composition for the printing rubber roller, and standing at room temperature for 24 hours for later use.
Comparative example 1
The comparative example is the preparation of the rubber composition for the printing rubber roller:
100 parts of 3355 parts of nitrile rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 25 parts of white factice, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of antioxidant MB, 1.8 parts of sulfur, 1.5 parts of accelerator BZ, 2 parts of accelerator M, 1 part of sulfur-carrying body DTDM, 80 parts of small-molecule plasticizer (DOP), 10 parts of liquid butyronitrile with molecular weight of 6000 and 2 parts of lead stearate.
Adding the components into a high-temperature internal mixer for internal mixing at 140 ℃ for 15min, and uniformly mixing to obtain mixed rubber; adding the mixed rubber into an open mill, allowing the mixed rubber to pass through for 4 times, rolling for 4 times, then discharging to obtain the rubber composition for the printing rubber roller, and standing at room temperature for 24 hours for later use.
Comparative example 2
The comparative example is the preparation of the rubber composition for the printing rubber roller:
100 parts of 1052 nitrile butadiene rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 25 parts of white factice, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent MB, 1.8 parts of sulfur, 1.5 parts of an accelerator BZ, 2 parts of an accelerator M, 1 part of sulfur-carrying body DTDM, 80 parts of polypropylene decanoate with molecular weight of 3000, 10 parts of liquid butyronitrile with molecular weight of 6000 and 2 parts of lead stearate.
Adding the components into a high-temperature internal mixer for internal mixing at 140 ℃ for 15min, and uniformly mixing to obtain mixed rubber; adding the mixed rubber into an open mill, allowing the mixed rubber to pass through for 4 times, rolling for 4 times, then discharging to obtain the rubber composition for the printing rubber roller, and standing at room temperature for 24 hours for later use.
Comparative example 3
The comparative example is the preparation of the rubber composition for the printing rubber roller:
100 parts of 3355 parts of nitrile butadiene rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 0 part of white factice, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of antioxidant MB, 1.8 parts of sulfur, 1.5 parts of accelerator BZ, 2 parts of accelerator M, 1 part of sulfur-carrying body DTDM, 100 parts of polypropylene decanoate with molecular weight of 3000, 0 part of liquid butyronitrile and 2 parts of lead stearate.
Adding the components into a high-temperature internal mixer for internal mixing at 140 ℃ for 15min, and uniformly mixing to obtain mixed rubber; adding the mixed rubber into an open mill, allowing the mixed rubber to pass through for 4 times, rolling for 4 times, then discharging to obtain the rubber composition for the printing rubber roller, and standing at room temperature for 24 hours for later use.
Example 3
(1) The rubber compositions for printing rollers prepared in examples 1 to 2 and comparative examples 1 to 3 were tested for various properties, and the results are shown in table 1.
As shown in Table 1, the rubber composition formulations for printing rollers provided in examples 1 and 2 of the present invention have more excellent solvent resistance, and also have excellent overall properties such as hardness, resilience, and strength, compared with comparative examples 1 to 3.
(2) The rubber rollers for printing rollers prepared in the embodiments 1 to 2 and the comparative examples 1 to 3 were prepared by the same preparation method, and the results of the detection of the service life of the rubber rollers are shown in table 1.
Example 4
This example is the preparation of printing rollers.
The rubber compositions for printing rubber rollers which are obtained in the embodiments 1 to 2 and the comparative examples 1 to 3 and are parked for 24 hours are respectively injected into a mold by using an injection molding machine, an iron core is wrapped, the material injection is stopped after a proper amount of the rubber material overflows, the mold is opened after the rubber material is vulcanized in a vulcanizing tank at 155 ℃ for 5 hours, and a product, namely the printing rubber roller, is taken out.
As shown in Table 1, the rubber rolls of examples 1-2 of the present invention had longer service lives than those of comparative examples 1-3.
Table 1 results of various property measurements
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The rubber composition for the printing rubber roller is characterized by comprising the following components in parts by mass:
80-100 parts of nitrile rubber, 35-45 parts of polyvinyl chloride, 20-40 parts of white carbon black, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 0-2 parts of an anti-aging agent, 1.8-3 parts of sulfur, 3-6 parts of a vulcanization accelerator, 0-2 parts of a sulfur carrier, 2-3 parts of a PVC heat stabilizer, 70-90 parts of a polyester plasticizer, 25-35 parts of factice and 5-15 parts of liquid butyronitrile;
the nitrile rubber is 3355 nitrile rubber;
the molecular weight of the polyester plasticizer is 2000-4000;
the mass ratio of the polyester plasticizer to the ointment is 3: 1-4: 1.
2. The rubber composition for the printing rubber roller is characterized by comprising the following components in parts by mass:
90-100 parts of nitrile butadiene rubber, 40-50 parts of polyvinyl chloride, 20-40 parts of white carbon black, 3-8 parts of zinc oxide, 1-3 parts of magnesium oxide, 0-2 parts of an anti-aging agent, 1.8-3 parts of sulfur, 3-6 parts of a vulcanization accelerator, 0-2 parts of a sulfur carrier, 2-3 parts of a PVC heat stabilizer, 70-90 parts of a polyester plasticizer, 25-35 parts of factice and 5-15 parts of liquid butyronitrile;
the nitrile rubber is 3355 nitrile rubber;
the molecular weight of the polyester plasticizer is 2000-4000;
the mass ratio of the polyester plasticizer to the ointment is 3: 1-4: 1.
3. The rubber composition for the printing rubber roll according to claim 1 or 2, characterized in that the rubber composition comprises, by mass, 100 parts of nitrile rubber, 40 parts of polyvinyl chloride, 30 parts of white carbon black, 6 parts of zinc oxide, 2.5 parts of magnesium oxide, 2 parts of an anti-aging agent, 1.8 parts of sulfur, 3.5 parts of a vulcanization accelerator, 1 part of a sulfur-carrying agent, 2 parts of a PVC heat stabilizer, 80 parts of a polyester plasticizer, 25 parts of factice and 10 parts of liquid nitrile.
4. The rubber composition for printing rollers according to claim 1, wherein the antioxidant is antioxidant MB.
5. The rubber composition for printing rollers according to claim 1, wherein the sulfur carrier is a sulfur carrier DTDM.
6. The process for preparing a rubber composition for printing rollers according to any one of claims 1 to 5, characterized in that it comprises the following steps:
step 1: mixing nitrile butadiene rubber, polyvinyl chloride, white carbon black, a plasticizer, zinc oxide, magnesium oxide, an anti-aging agent MB, sulfur, a vulcanization accelerator, a sulfur carrier and a PVC heat stabilizer to obtain mixed rubber;
step 2: plasticating the mixed rubber, thinly passing for 4 times, and rolling for 4 times to obtain the rubber composition for the printing rubber roller.
7. A printing roller, characterized by comprising a roller core and the rubber composition for the printing roller of any one of claims 1 to 5 coated on the outer surface of the roller core.
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| JP3633331B2 (en) * | 1998-12-24 | 2005-03-30 | 東海ゴム工業株式会社 | Developing roll |
| CN1326930C (en) * | 2004-12-02 | 2007-07-18 | 北京化工大学 | High performance elastomer composite material spcially for printing rubber roller and its preparing method |
| CN103073757B (en) * | 2013-01-28 | 2015-04-01 | 江阴海达橡塑股份有限公司 | Environment-friendly low-condensation-point diesel resistant butadiene-acrylonitrile rubber and preparation method thereof |
| CN103756057B (en) * | 2013-12-31 | 2016-08-31 | 杭州顺豪橡胶工程有限公司 | Low Hardness Printing sizing material |
| CN103756059B (en) * | 2014-02-21 | 2015-09-30 | 河北春风银星胶辊有限公司 | A kind of environmental printing rubber roll bag coating compound |
| CN104292535A (en) * | 2014-09-25 | 2015-01-21 | 沈阳化工大学 | NBR/PVC elastomer by taking LNBR as plasticizer and preparation method of elastomer |
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