CN108641133B - Anti-firing conveyer belt - Google Patents
Anti-firing conveyer belt Download PDFInfo
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- CN108641133B CN108641133B CN201810460324.1A CN201810460324A CN108641133B CN 108641133 B CN108641133 B CN 108641133B CN 201810460324 A CN201810460324 A CN 201810460324A CN 108641133 B CN108641133 B CN 108641133B
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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
- C08L7/00—Compositions of natural rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2407/00—Characterised by the use of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2457/00—Characterised by the use of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08J2457/02—Copolymers of mineral oil hydrocarbons
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
Abstract
The invention relates to an anti-burning conveying belt, which comprises a covering layer rubber, wherein the covering layer rubber is graphene modified rubber; the graphene modified rubber comprises the following raw material components in parts by weight: 55-65 parts of No. 3 smoked sheet rubber, 55-45 parts of styrene butadiene rubber SBR-150235 parts, 2.5-3.5 parts of nano zinc oxide, 1.3-1.8 parts of stearic acid, 1-1.5 parts of anti-aging agent 4010NA, 2-2.5 parts of anti-aging agent RD, 1-2 parts of anti-aging agent MB, 45-55 parts of carbon black N22045, 8-10 parts of petroleum resin, 4-5 parts of pine tar, 1.5-2 parts of sulfur, 2-2.5 parts of accelerator CBS, 1-1.5 parts of accelerator TMTD, 1-1.5 parts of accelerator DTDM, 4-8 parts of graphene pre-dispersed emulsion styrene butadiene rubber master batch and 5-10 parts of graphene pre-dispersed natural rubber master batch. The graphene modified rubber has excellent mechanical property and strong burning resistance, is used for manufacturing a conveyer belt covering layer, can obviously prolong the service life of the conveyer belt covering layer, and can obtain the capacity of bearing high-temperature materials.
Description
Technical Field
The invention relates to a rubber technology, in particular to graphene modified rubber, a preparation method thereof and application thereof in a conveying belt.
Background
Rubber (Rubber) is a high polymer material which can rapidly recover deformation under large deformation and has high elasticity, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature (Tg) and a molecular weight often very high, greater than several hundred thousand. The rubber is divided into natural rubber and synthetic rubber. The natural rubber is prepared by extracting colloid from plants such as rubber tree and rubber grass and processing; synthetic rubbers are obtained by polymerization of various monomers. Rubber products have been widely used in various industrial or domestic fields. In recent years, with the rapid development of the rubber industry, higher requirements are also put forward on rubber products, and especially in the high-tech fields of transportation, aerospace and the like, the requirements on rubber materials are nearly strict, and a single rubber material cannot completely meet the current strict performance requirements. Therefore, the rubber material must be functionalized and diversified.
The nano-filler has a large specific surface area and a strong filler-polymer interface force. The nano composite material has more excellent mechanical, thermal, electrical and gas/liquid barrier properties. The modification of rubber by adopting nano composite filler is one of the trends of the development of rubber industry.
The conveyer belt mainly comprises three main parts, namely a framework material, a covering layer and a priming material. Rubber conveyor belts are so named because their cover layers are rubber, and are widely used in the industrial field. The covering layer of the rubber conveyer belt is a key part for determining the performance of the rubber conveyer belt, and the mechanical property is a key factor for determining the service life, so that the mechanical property is an important index for judging the quality of the rubber conveyer belt. In addition, in some special occasions, the rubber conveying belt is required to have strong burning resistance. For rubber conveyor belts, the rubber modified by the nano-composite filler in the covering layer is expected to obtain more excellent mechanical properties and stronger anti-burning capability, so that the rubber is suitable for increasingly severe working requirements.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the anti-burning conveying belt, and the covering layer rubber of the anti-burning conveying belt is graphene modified rubber. The graphene modified rubber adopted by the covering rubber has excellent mechanical property and strong burning resistance, is used for manufacturing the covering layer of the conveying belt, can obviously prolong the service life of the covering layer, and can obtain the capacity of bearing high-temperature materials.
The invention provides the following technical scheme:
the anti-burning conveying belt comprises covering layer rubber, wherein the covering layer rubber is graphene modified rubber; the graphene modified rubber comprises the following raw material components in parts by weight:
compared with the prior art, the graphene modified rubber has specific components and dosage, and the following remarkable progress is achieved:
1) the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch are added for modification, so that the mechanical property of the rubber which is the mixture of natural rubber and styrene-butadiene rubber is obviously improved, and tests show that the abrasion loss is not more than 120mm3The crescent-shaped tearing force can reach more than 110N/mm, and the trouser-shaped tearing force can reach more than 36N/mm.
2) The graphene has unique mechanical properties, and is modified by using the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, so that the technical bottleneck problems of the rubber conveying belt are solved, the performances such as tear resistance, wear resistance and the like are improved, and the service life of the conveying belt is ensured.
3) The graphene modified rubber has strong burning resistance, and a conveyor belt covering layer manufactured by using the graphene modified rubber can bear materials at 800 ℃, so that the graphene modified rubber can be applied to special high-temperature occasions and has the characteristic of wide application range.
Therefore, the anti-burning conveyer belt has the characteristics of good mechanical property of covering rubber, guaranteed service life, strong anti-burning capability and capability of bearing materials at 800 ℃, so that the conveyer belt can be applied to some special high-temperature occasions and has a wide application range.
In order to further improve the mechanical properties of the product, as an optimized scheme, in the anti-burning conveyor belt, the raw material components of the graphene modified rubber are as follows in parts by weight:
as a further optimized scheme, in the anti-burning conveyor belt, the raw material components of the graphene modified rubber are as follows in parts by weight:
the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch contain 10 wt% of graphene.
Experiments show that the graphene modified rubber prepared by adopting the formula has the optimal mechanical property, wherein the abrasion loss is only 109.6mm3The crescent-shaped tearing force can reach over 115.4N/mm, and the trouser-shaped tearing force can reach over 38.6N/mm.
In the above anti-burning conveyor belt, the graphene modified rubber may be prepared according to the following method steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.3-0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90-100 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 100-120 seconds;
s4, adding carbon black N220 and pine tar, and mixing for 100-120 seconds or discharging rubber when the temperature of an internal mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0 +/-0.2 mm, cooling and standing for at least 4 hours to obtain a rubber material A;
s6, heating the mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the mixing machine together, and mixing for 90-100 seconds or discharging when the temperature of the mixing chamber reaches 95 ℃;
s7, conducting milling and thin passing triangular wrapping for 3-5 times by using an open mill, and controlling the thickness of the film to be 0.3-0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the rubber sheet to be 5.0 +/-0.2 mm, rolling the rubber sheet for 3-5 times by using left and right broaches, then discharging the rubber sheet, and standing the rubber sheet at room temperature for at least 24 hours to obtain rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2-2.3 mm, and vulcanizing the rubber sheet in a mold on a flat vulcanizing machine; in the step, the vulcanization condition is 150-155 ℃ multiplied for 20-30 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in the step, the vulcanization condition is 150-155 ℃ multiplied by 30-35 min.
As an optimized scheme, the method for preparing the graphene modified rubber in the anti-burning conveyer belt comprises the following steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 120 seconds;
s4, adding carbon black N220 and pine tar, mixing for 120 seconds or discharging when the temperature of an internal mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0mm, cooling and standing for 4 hours to obtain a rubber material A;
s6, heating the mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the mixer together, and mixing for 90 seconds or discharging when the temperature of the mixing chamber reaches 95 ℃;
s7, conducting guide refining and thin passing triangular wrapping for 5 times by using an open mill, and controlling the thickness of the film to be 0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the film to be 5.0mm, rolling the film for 3 times by a left broach and a right broach, then discharging the film, and standing the film at room temperature for 24 hours to obtain a rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2mm, and vulcanizing the rubber sheet in a mould on a flat vulcanizing machine; in the step, the vulcanization condition is 150 ℃ multiplied by 20 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in this step, the vulcanization conditions were 150 ℃ for 30 min.
The method has the characteristics of easy implementation and suitability for large-scale production. In addition, tests show that the method has the characteristic of high yield.
Detailed Description
The present invention will be further described with reference to specific embodiments (examples), but the present invention is not limited thereto.
The graphene modified rubber can be prepared from the following raw materials in parts by weight: 55-65 parts of No. 3 smoked sheet rubber, 55-45 parts of styrene butadiene rubber SBR-150235 parts, 2.5-3.5 parts of nano zinc oxide, 1.3-1.8 parts of stearic acid, 1.3-1.5 parts of anti-aging agent 4010NA1, 2-2.5 parts of anti-aging agent RD, 1-2 parts of anti-aging agent MB, 45-55 parts of carbon black N22045, 8-10 parts of petroleum resin, 4-5 parts of pine tar, 1.5-2 parts of sulfur, 2-2.5 parts of accelerator CBS, 1-1.5 parts of accelerator TMTD, 1-1.5 parts of accelerator DTDM, 4-8 parts of graphene pre-dispersed emulsion styrene butadiene rubber master batch and 5-10 parts of graphene pre-dispersed natural rubber master batch.
The graphene modified rubber can be prepared according to the following method, and comprises the following steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.3-0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90-100 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 100-120 seconds;
s4, adding carbon black N220 and pine tar, and mixing for 100-120 seconds or discharging rubber when the temperature of an internal mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0 +/-0.2 mm, cooling and standing for at least 4 hours to obtain a rubber material A;
s6, heating the mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the mixing machine together, and mixing for 90-100 seconds or discharging when the temperature of the mixing chamber reaches 95 ℃;
s7, conducting milling and thin passing triangular wrapping for 3-5 times by using an open mill, and controlling the thickness of the film to be 0.3-0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the rubber sheet to be 5.0 +/-0.2 mm, rolling the rubber sheet for 3-5 times by using left and right broaches, then discharging the rubber sheet, and standing the rubber sheet at room temperature for at least 24 hours to obtain rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2-2.3 mm, and vulcanizing the rubber sheet in a mold on a flat vulcanizing machine; in the step, the vulcanization condition is 150-155 ℃ multiplied for 20-30 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in the step, the vulcanization condition is 150-155 ℃ multiplied by 30-35 min.
The conveying belt covering layer prepared from the graphene modified rubber has excellent mechanical properties, the service life is ensured, and meanwhile, the conveying belt covering layer has strong burning resistance and can be suitable for some special high-temperature occasions.
Example 1
In this embodiment, the graphene modified rubber is prepared according to the following component proportions: 60 parts of No. 3 smoked sheet rubber, SBR-150240 parts of styrene butadiene rubber, 3 parts of nano zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant 4010NA, 2 parts of antioxidant RD, 2 parts of antioxidant MB, 22050 parts of carbon black, 8 parts of petroleum resin, 4 parts of pine tar, 2 parts of sulfur, 2.5 parts of accelerator CBS, 1 part of accelerator TMTD, 1 part of accelerator DTDM, 5 parts of graphene pre-dispersed emulsion styrene butadiene rubber master batch and 10 parts of graphene pre-dispersed natural rubber master batch.
The graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch contain 10 wt% of graphene.
In this embodiment, the graphene modified rubber is prepared according to the following steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 120 seconds;
s4, adding carbon black N220 and pine tar, and discharging rubber when the temperature of the mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0mm, cooling and standing for 4 hours to obtain a rubber material A;
s6, heating the internal mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the internal mixer together, mixing for 90 seconds, and discharging rubber;
s7, conducting guide refining and thin passing triangular wrapping for 5 times by using an open mill, and controlling the thickness of the film to be 0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the film to be 5.0mm, rolling the film for 3 times by a left broach and a right broach, then discharging the film, and standing the film at room temperature for 24 hours to obtain a rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2mm, and vulcanizing the rubber sheet in a mould on a flat vulcanizing machine; in the step, the vulcanization condition is 150 ℃ multiplied by 20 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in this step, the vulcanization conditions were 150 ℃ for 30 min.
In the embodiment, the styrene butadiene rubber SBR-1502 is a product of China oil and gas Co; no. 3 smoked sheet glue is imported Thailand; carbon black N220 is a product produced by Jiangxi black cat carbon black GmbH; the graphene pre-dispersed emulsion-polymerized styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch are products of New Youwei New Material Co., Ltd, and the content of graphene is 10 wt%.
In this embodiment, the internal mixer is a 3L pressurized type produced by Shanghai light industry machinery, Inc.; the open mill is an S (X) R-160A double-roll open mill produced by Shanghai light industry machinery part Co., Ltd; rotorless vulcameter, taiwan high-speed rail, inc; XLB type press vulcanizer, grandqia rubber machinery, inc; electronic tensile machine, taiwan high-speed rail, ltd; shore a rubber durometer, shanghai mitsubishi mechanical factory; roller abrasion machine, taiwan youken limited; hot air aging box, Shanghai city laboratory instruments Master factory.
Example 2
Unlike in example 1, in this example, the graphene-modified rubber is prepared according to the following component ratios: 60 parts of No. 3 smoked sheet rubber, SBR-150240 parts of styrene butadiene rubber, 3 parts of nano zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant 4010NA, 2 parts of antioxidant RD, 2 parts of antioxidant MB, 22050 parts of carbon black, 8 parts of petroleum resin, 4 parts of pine tar, 2 parts of sulfur, 2.5 parts of accelerator CBS, 1 part of accelerator TMTD, 1 part of accelerator DTDM, 4 parts of graphene pre-dispersed emulsion styrene butadiene rubber master batch and 5 parts of graphene pre-dispersed natural rubber master batch.
Example 3
Unlike in example 1, in this example, the graphene-modified rubber is prepared according to the following component ratios: 60 parts of No. 3 smoked sheet rubber, SBR-150240 parts of styrene butadiene rubber, 3 parts of nano zinc oxide, 1.5 parts of stearic acid, 1.5 parts of antioxidant 4010NA, 2 parts of antioxidant RD, 2 parts of antioxidant MB, 22050 parts of carbon black, 8 parts of petroleum resin, 4 parts of pine tar, 2 parts of sulfur, 2.5 parts of accelerator CBS, 1 part of accelerator TMTD, 1 part of accelerator DTDM, 8 parts of graphene pre-dispersed emulsion styrene butadiene rubber master batch and 10 parts of graphene pre-dispersed natural rubber master batch.
Tests show that the graphene modified rubber prepared in the above embodiments 1 to 3 can achieve the purpose of the present invention, and relatively speaking, embodiment 1 is the most preferred embodiment, and the prepared graphene modified rubber has the most preferred mechanical properties, so that the conveyor belt covering layer prepared from the graphene modified rubber has the longest service life. Specific performance indices are shown in table 1 below.
TABLE 1
The above general description of the invention and the description of the specific embodiments thereof referred to in this application should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the embodiments to form other technical solutions within the protection scope of the present application without departing from the present disclosure.
Claims (5)
1. The anti-burning conveyer belt comprises covering rubber and is characterized in that: the covering layer rubber is graphene modified rubber;
the graphene modified rubber comprises the following raw material components in parts by weight:
2. the anti-burning conveyor belt according to claim 1, wherein the graphene-modified rubber comprises the following raw material components in parts by weight:
3. the anti-burning conveyor belt according to claim 2, wherein the graphene-modified rubber comprises the following raw material components in parts by weight:
the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch contain 10 wt% of graphene.
4. The conveyor belt of claim 1, 2 or 3, wherein the method for preparing the graphene modified rubber comprises the following steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.3-0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90-100 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 100-120 seconds;
s4, adding carbon black N220 and pine tar, and mixing for 100-120 seconds or discharging rubber when the temperature of an internal mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0 +/-0.2 mm, cooling and standing for at least 4 hours to obtain a rubber material A;
s6, heating the mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the mixing machine together, and mixing for 90-100 seconds or discharging when the temperature of the mixing chamber reaches 95 ℃;
s7, conducting milling and thin passing triangular wrapping for 3-5 times by using an open mill, and controlling the thickness of the film to be 0.3-0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the rubber sheet to be 5.0 +/-0.2 mm, rolling the rubber sheet for 3-5 times by using left and right broaches, then discharging the rubber sheet, and standing the rubber sheet at room temperature for at least 24 hours to obtain rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2-2.3 mm, and vulcanizing the rubber sheet in a mold on a flat vulcanizing machine; in the step, the vulcanization condition is 150-155 ℃ multiplied for 20-30 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in the step, the vulcanization condition is 150-155 ℃ multiplied by 30-35 min.
5. The conveyor belt of claim 4, wherein the method for preparing the graphene-modified rubber comprises the following steps:
s1, respectively thinning and passing the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch by using an open mill, and controlling the thickness of a film to be 0.5 mm;
s2, heating the banburying chamber to 50 ℃, adding No. 3 smoked sheet rubber, SBR-1502, the graphene pre-dispersed emulsion styrene-butadiene rubber master batch and the graphene pre-dispersed natural rubber master batch, and mixing for 90 seconds;
s3, adding nano zinc oxide, stearic acid, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent MB and petroleum resin, and mixing for 120 seconds;
s4, adding carbon black N220 and pine tar, mixing for 120 seconds or discharging when the temperature of an internal mixing chamber reaches 120 ℃;
s5, rolling and discharging the sheet by using an open mill, controlling the thickness to be 5.0mm, cooling and standing for 4 hours to obtain a rubber material A;
s6, heating the mixing chamber to 50 ℃, putting the rubber material A, the sulfur, the accelerator CBS, the accelerator TMTD and the accelerator DTDM into the mixer together, and mixing for 90 seconds or discharging when the temperature of the mixing chamber reaches 95 ℃;
s7, conducting guide refining and thin passing triangular wrapping for 5 times by using an open mill, and controlling the thickness of the film to be 0.5 mm;
s8, adjusting the roller spacing, controlling the thickness of the film to be 5.0mm, rolling the film for 3 times by a left broach and a right broach, then discharging the film, and standing the film at room temperature for 24 hours to obtain a rubber material B;
s9, uniformly mixing the rubber material by using an open mill, discharging the rubber material, controlling the thickness of the smooth rubber sheet to be 2.2mm, and vulcanizing the rubber sheet in a mould on a flat vulcanizing machine; in the step, the vulcanization condition is 150 ℃ multiplied by 20 min;
s10, overlapping the smooth films into 4-6 layers, and vulcanizing in a wear mold; in this step, the vulcanization conditions were 150 ℃ for 30 min.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227631.2A CN111303495B (en) | 2018-05-15 | 2018-05-15 | Graphene modified rubber and preparation method thereof |
| CN201810460324.1A CN108641133B (en) | 2018-05-15 | 2018-05-15 | Anti-firing conveyer belt |
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| KR100437690B1 (en) * | 2001-07-18 | 2004-06-26 | 금호타이어 주식회사 | Tread Rubber Composition |
| CN101864098B (en) * | 2010-06-03 | 2012-01-04 | 四川大学 | Preparation method of polymer/graphene composite material through in situ reduction |
| US9267019B2 (en) * | 2011-06-15 | 2016-02-23 | Lion Copolymer Holdings, Llc | Functionalized silica for silica wet masterbatches and styrene butadiene rubber compositions |
| CN104136237A (en) * | 2011-12-12 | 2014-11-05 | 沃尔贝克材料有限公司 | Rubber compositions comprising graphene and reinforcing agents and articles made therefrom |
| CN105482201A (en) * | 2016-01-04 | 2016-04-13 | 青岛双星轮胎工业有限公司 | High-performance tire containing oxidized graphene |
| CN106084332B (en) * | 2016-08-16 | 2018-01-30 | 青岛蓝湾烯碳材料科技有限责任公司 | The preparation method and process units of the pre-dispersed rubber master batch of graphene microchip |
| CN106279804A (en) * | 2016-08-16 | 2017-01-04 | 青岛蓝湾烯碳材料科技有限责任公司 | The preparation method of graphene microchip/white carbon black compounded rubber |
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| CN108641133A (en) | 2018-10-12 |
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Denomination of invention: Burn resistant conveyor belt Effective date of registration: 20230706 Granted publication date: 20200424 Pledgee: China Construction Bank Corporation Sanmen sub branch Pledgor: ZHEJIANG FENFEI RUBBER & PLASTIC PRODUCTS CO.,LTD. Registration number: Y2023330001384 |