CN102304240A - Heat-resistant and wear-resistant conveyor belt covering rubber and preparation method thereof - Google Patents
Heat-resistant and wear-resistant conveyor belt covering rubber and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a heat-resistant and wear-resistant conveyor belt covering rubber and a preparation method thereof, and the prepared product has good wear resistance. The method comprises the following steps of plasticating butadiene styrene rubber and butadiene rubber on an open mill or plasticating at the same time, and banburying the prepared plasticated rubber in an internal mixer; then opening a top plug, adding a reinforcing filler, a vulcanization activator, a coupling agent, a plasticizer, an anti-aging agent and an anti-scorching agent, banburying, turning over, discharging, and cooling by a normal-temperature fan to obtain a first-stage rubber compound; and then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, a vulcanizing agent and a vulcanization accelerator into an internal mixer, mixing, turning over, discharging, and cooling by a normal-temperature fan to obtain the product, namely the heat-resistant and wear-resistant conveyor belt covering rubber. After the heat-resistant and wear-resistant conveyor belt covering rubber is used, the requirement of a steel mill for conveying materials on temperature is met, meanwhile, the service life of the conveyor belt is greatly prolonged, and good economic benefits are realized.
Description
Technical field
The present invention relates to a kind of heat-resistant and wear-resistant conveyor belt rubber cover and preparation method thereof, prepared product has the good wear resistance ability, is applicable to and makes the canvas core heat resistance conveyor belt that meets GB/T 20021-2005 standard.
Background technology
In recent years; The fast development of China's economic has promoted shooting up of industries such as iron and steel, cement, and industrial scale constantly enlarges, and production capacity improves constantly; Certainly, the material transport section---conveying belt was had higher requirement during this also produced iron and steel, cement industry.
Iron and steel, cement industry institute convey materials generally have megathermal characteristics, from for the conveying belt consideration in work-ing life, require conveying belt to have wear resisting property preferably usually simultaneously.Yet at present employed domestic T2 rank heat resistance conveyor belt only can satisfy the requirement to temperature, and is few to the consideration of the wear resistance that concerns conveying belt work-ing life.
Stand in to practice thrift and use enterprise cost, guarantee the angle of its continuous production and energy-saving and emission-reduction, canvas core or the steel cable core conveying belt rubber cover of developing a kind of heat-resistant antifriction just seem particularly necessary.
Summary of the invention
One of the object of the invention is to overcome the deficiency that exists in the prior art, and a kind of resistance toheat requirement that can satisfy heat resistance conveyor belt T2 grade is provided, and has the rubber cover of fine wear resisting property again.
Another object of the present invention provides a kind of preparation method of heat-resistant and wear-resistant conveyor belt rubber cover.
The object of the invention can be realized through following technical scheme: a kind of heat-resistant and wear-resistant conveyor belt rubber cover, and formula rate component by weight is following:
Styrene-butadiene rubber(SBR) 40-100 part, cis-1,4-polybutadiene rubber 0-60 part, reinforced filling 25-75 part, vulcanizing agent 0.2-5 part, vulcanization accelerator 0.8-7 part, vulcanization leveller 4-12 part, coupling agent 0.8-3 part, softening agent 5-25 part, anti-aging agent 1-6 part and scorch retarder 0.1-1 part, through plasticate with mixing after make the heat-resistant and wear-resistant conveyor belt rubber cover.
Said styrene-butadiene rubber(SBR) is oil-extended styrene-butadiene rubber or oil-extended styrene-butadiene rubber not, and its combined styrene content is 22.5%-24.5%;
Said cis-1,4-polybutadiene rubber is the high-cis cis-1,4-polybutadiene rubber, and the content of cis 1 rubber is 96%.
Said reinforced filling is one or more among WHITE CARBON BLACK, carbon black N220, carbon black N234 or the carbon black N115.
Said vulcanizing agent is a Sulfur.
Said vulcanization accelerator is sulfenamide type accelerators CZ, sulfenamide type accelerators NOBS, one or more among thiazole accelerator DM or the thiuram type accelerator TMTD.
Said vulcanization leveller is one or both in zinc oxide and the Triple Pressed Stearic Acid.
Said coupling agent is coupling agent SI-69.
Said softening agent is aromatic hydrocarbon oil, coumarone, carbon 5 petroleum resin, carbon 9 petroleum resin, one or more among octyl group phenolic aldehyde BN-1 or the octyl group phenolic aldehyde BN-2.
Said anti-aging agent is one or more in anti-aging agent RD, antioxidant 4010NA, antioxidant MB or the antioxidant BLE.
Said scorch retarder is one or both among anti-scorching agent CTP or the scorch retarder PVI.
The preparation method of described heat-resistant and wear-resistant conveyor belt rubber cover, formula rate step by weight is following:
(1) plasticate: get styrene-butadiene rubber(SBR) 40-100 part, cis-1,4-polybutadiene rubber 0-60 part in mill, plasticate or and with plasticating, its roll spacing 2-4mm, the roller temperature control is at 40-50 ℃, the 10-15min that plasticates obtains broken-(down)rubber;
(2) mixing: mixing branch carries out for two sections, and the broken-(down)rubber that one section mixing elder generation makes step (1) drops in the Banbury mixer, banburying 1-2min; Open floating weight then and add reinforced filling 25-75 part, vulcanization leveller 4-12 part, coupling agent 0.8-3 part; Softening agent 5-25 part; Anti-aging agent 1-6 part and scorch retarder 0.1-1 part, banburying 3-5min, dump temperature are controlled at 130-150 ℃; Through turning refining, making one section rubber unvulcanizate, park 6-10h by thickness 8-12mm slice, the cooling of normal temperature blower fan; Carry out two-stage mixing subsequently; Getting one section rubber unvulcanizate, vulcanizing agent 0.2-5 part and vulcanization accelerator 0.8-7 part of making drops in the Banbury mixer; Mixing 3-4min; Dump temperature is controlled at 120-130 ℃, through turning refining, cooling off by thickness 8-12mm slice, normal temperature blower fan, promptly gets product heat-resistant and wear-resistant conveyor belt rubber cover.
Beneficial effect of the present invention: the present invention takes all factors into consideration from aspects such as heat resistance, wear resisting property and processing characteristicies; The formula system of selected heat-resistant and wear-resistant conveyor belt rubber cover can reach splendid effect; Heat-resistant and wear-resistant conveyor belt rubber cover of the present invention had both satisfied the requirement of steel mill's convey materials to temperature; Simultaneously, significantly improved the work-ing life of conveying belt, realized good economic benefits.
Embodiment
Through embodiment the present invention is further specified below, but not as limitation of the present invention.
Embodiment 1
Formula rate is by weight: (1712) 20 parts in styrene-butadiene rubber(SBR), (1502) 80 parts in styrene-butadiene rubber(SBR), 60 parts of carbon black N220,15 parts of WHITE CARBON BLACKs; 0.4 part of Sulfur, 1 part of sulfenamide type accelerators NOBS, 1.2 parts of thiuram type accelerator TMTD, 0.8 part of vulkacit D TDM; 5 parts in zinc oxide, 3 parts of Triple Pressed Stearic Acid, 1.5 parts of coupling agent SI-69,8 parts of coumarones; 2 parts of bakelite B N-1 (guest king chemical plant, Wuxi), 5 parts of aromatic hydrocarbon oil, 1 part of antioxidant 4010NA, 1 part of antioxidant BLE; 1 part of antioxidant MB, 1.5 parts of anti-aging agent RDs, 0.5 part of anti-scorching agent CTP.
The preparation method of described heat-resistant and wear-resistant conveyor belt rubber cover, concrete steps are:
(1) plasticate: styrene-butadiene rubber(SBR) (1712) and styrene-butadiene rubber(SBR) (1502) are plasticated in mill, roll spacing 2-4mm, the roller temperature control is at 40-50 ℃, and the 15min that plasticates processes broken-(down)rubber.
(2) mixing: mixing branch carries out for two sections, and one section mixing is broken-(down)rubber to be dropped in the Banbury mixer banburying 1min earlier; Open floating weight then and add carbon black, WHITE CARBON BLACK, zinc oxide, Triple Pressed Stearic Acid, coupling agent SI-69, coumarone, bakelite B N-1, aromatic hydrocarbon oil, antioxidant 4010NA, antioxidant BLE; Antioxidant MB, anti-aging agent RD and anti-scorching agent CTP; Banburying 3min; Dump temperature is controlled at 130-150 ℃, through turning refining, processing one section rubber unvulcanizate by thickness 8-12mm slice, the cooling of normal temperature blower fan, parks 6h; Two-stage mixing is with one section rubber unvulcanizate and Sulfur and sulfenamide type accelerators NOBS, thiuram type accelerator TMTD and vulkacit D TDM; Drop in the Banbury mixer; Mixing 3min; Dump temperature is controlled at 120-130 ℃, through turning refining, promptly getting product heat-resistant and wear-resistant conveyor belt rubber cover by thickness 8-12mm slice, the cooling of normal temperature blower fan.
Embodiment 2
Formula rate is by weight: (1502) 80 parts in styrene-butadiene rubber(SBR), 20 parts of cis-1,4-polybutadiene rubbers, carbon black N23450 part, 10 parts of carbon black N115; 10 parts of WHITE CARBON BLACKs, 0.4 part of Sulfur, 1 part of sulfenamide type accelerators NOBS, 1.2 parts of thiuram type accelerator TMTD; 0.8 part of thiazole accelerator DM, 5 parts in zinc oxide, 3 parts of Triple Pressed Stearic Acid, 1 part of coupling agent SI-69; 8 parts of coumarones, 2 parts of octyl group phenolic aldehyde BN-2 (guest king chemical plant, Wuxi), 10 parts of aromatic hydrocarbon oil, 1 part of antioxidant 4010NA; 1 part of antioxidant BLE, 1 part of antioxidant MB, 1.5 parts of anti-aging agent RDs, 0.7 part of scorch retarder PVI.
The preparation method of described heat-resistant and wear-resistant conveyor belt rubber cover, concrete steps are:
(1) plasticate: butadiene-styrene rubber 1502 and cis-1,4-polybutadiene rubber are plasticated in mill, roll spacing 2-4mm, the roller temperature control is at 40-50 ℃, and the 12min that plasticates processes broken-(down)rubber.
(2) mixing: mixing branch carries out for two sections, and one section mixing is broken-(down)rubber to be dropped in the Banbury mixer banburying 1-2min earlier; Open floating weight then and add carbon black N234; Carbon black N115, WHITE CARBON BLACK, zinc oxide, Triple Pressed Stearic Acid, coupling agent SI-69, coumarone, octyl group phenolic aldehyde BN-2, aromatic hydrocarbon oil, antioxidant 4010NA, antioxidant BLE, antioxidant MB, anti-aging agent RD and scorch retarder PVI; Banburying 5min; Dump temperature is controlled at 130-150 ℃, through turning refining, processing one section rubber unvulcanizate by thickness 8-12mm slice, the cooling of normal temperature blower fan, parks 10h.Two-stage mixing is that mixing 4min, dump temperature are controlled at 120-130 ℃ with in one section rubber unvulcanizate and Sulfur and the promotor input Banbury mixer, through turning refining, promptly getting product heat-resistant and wear-resistant conveyor belt rubber cover by thickness 8-12mm slice, the cooling of normal temperature blower fan normal temperature.
Embodiment 3
Formula rate is by weight: (1502) 50 parts in styrene-butadiene rubber(SBR), (1712) 30 parts in styrene-butadiene rubber(SBR), 20 parts of cis-1,4-polybutadiene rubbers, 50 parts of carbon black N234; 10 parts of carbon black N115,10 parts of WHITE CARBON BLACKs, 0.4 part of Sulfur, 1 part of sulfenamide type accelerators NOBS; 1.2 parts of thiuram type accelerator TMTD, 5 parts in zinc oxide, 3 parts of Triple Pressed Stearic Acid, 1 part of coupling agent SI-69; 8 parts of coumarone indene resins, 2 parts of bakelite B N-1 (guest king chemical plant, Wuxi), 5 parts of aromatic hydrocarbon oil, 1 part of antioxidant 4010NA; 1 part of antioxidant BLE, 1 part of antioxidant MB, 1.5 parts of anti-aging agent RDs, 0.7 part of anti-scorching agent CTP.
The preparation method of described heat-resistant and wear-resistant conveyor belt rubber cover, concrete steps are:
(1) plasticate: butadiene-styrene rubber 1502, styrene-butadiene rubber(SBR) 1712 and cis-1,4-polybutadiene rubber are plasticated in mill, roll spacing 2-4mm, the roller temperature control is at 40-50 ℃, and the 10min that plasticates processes broken-(down)rubber.
(2) mixing: mixing branch carries out for two sections, and one section mixing is broken-(down)rubber to be dropped in the Banbury mixer banburying 1-2min earlier; Open floating weight then and add carbon black N115, WHITE CARBON BLACK, zinc oxide, Triple Pressed Stearic Acid, coupling agent SI-69, coumarone, bakelite B N-1, aromatic hydrocarbon oil, antioxidant 4010NA, antioxidant BLE; Antioxidant MB, anti-aging agent RD, anti-scorching agent CTP; Banburying 4min; Dump temperature is controlled at 130-150 ℃, through turning refining, processing one section rubber unvulcanizate by thickness 8-12mm slice, the cooling of normal temperature blower fan, parks 8h.Two-stage mixing is that one section rubber unvulcanizate and Sulfur and sulfenamide type accelerators NOBS, thiuram type accelerator TMTD are dropped in the Banbury mixer; Mixing 3min; Dump temperature is controlled at 120-130 ℃, through turning refining, promptly getting product heat-resistant and wear-resistant conveyor belt rubber cover by thickness 8-12mm slice, the cooling of normal temperature blower fan normal temperature.
Aforesaid device is conventional production unit.
Claims (10)
1. heat-resistant and wear-resistant conveyor belt rubber cover is characterized in that: formula rate by weight:
Styrene-butadiene rubber(SBR) 40-100 part, cis-1,4-polybutadiene rubber 0-60 part, reinforced filling 25-75 part, vulcanizing agent 0.2-5 part, vulcanization accelerator 0.8-7 part, vulcanization leveller 4-12 part, coupling agent 0.8-3 part, softening agent 5-25 part, anti-aging agent 1-6 part and scorch retarder 0.1-1 part, through plasticate with mixing after make the heat-resistant and wear-resistant conveyor belt rubber cover;
Said styrene-butadiene rubber(SBR) is oil-extended styrene-butadiene rubber or oil-extended styrene-butadiene rubber not, and its combined styrene content is 22.5%-24.5%;
Said cis-1,4-polybutadiene rubber is the high-cis cis-1,4-polybutadiene rubber, and wherein the content of cis 1 rubber is 96%.
2. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said reinforced filling is one or more among WHITE CARBON BLACK, carbon black N220, carbon black N234 or the carbon black N115.
3. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said vulcanizing agent is a Sulfur.
4. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1; It is characterized in that: said vulcanization accelerator is sulfenamide type accelerators CZ, sulfenamide type accelerators NOBS, one or more among thiazole accelerator DM or the thiuram type accelerator TMTD.
5. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said vulcanization leveller is one or both in zinc oxide and the Triple Pressed Stearic Acid.
6. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said coupling agent is silane coupling agent SI-69.
7. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said softening agent is aromatic hydrocarbon oil, coumarone, carbon 5 petroleum resin, carbon 9 petroleum resin, one or more among octyl group phenolic aldehyde BN-1 or the octyl group phenolic aldehyde BN-2.
8. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said anti-aging agent is one or more in anti-aging agent RD, antioxidant 4010NA, antioxidant MB or the antioxidant BLE.
9. a kind of heat-resistant and wear-resistant conveyor belt rubber cover as claimed in claim 1 is characterized in that: said scorch retarder is one or both among anti-scorching agent CTP or the scorch retarder PVI.
10. the preparation method of the described heat-resistant and wear-resistant conveyor belt rubber cover of claim 1, it is characterized in that: formula rate step by weight is following:
(1) plasticate: get styrene-butadiene rubber(SBR) 40-100 part, cis-1,4-polybutadiene rubber 0-60 part in mill, plasticate or and with plasticating, its roll spacing 2-4mm, the roller temperature control is at 40-50 ℃, the 10-15min that plasticates obtains broken-(down)rubber;
(2) mixing: mixing branch carries out for two sections, and the broken-(down)rubber that one section mixing elder generation makes step (1) drops in the Banbury mixer, banburying 1-2min; Open floating weight then and add reinforced filling 25-75 part, vulcanization leveller 4-12 part, coupling agent 0.8-3 part; Softening agent 5-25 part; Anti-aging agent 1-6 part and scorch retarder 0.1-1 part, banburying 3-5min, dump temperature are controlled at 130-150 ℃; Through turning refining, making one section rubber unvulcanizate, park 6-10h by thickness 8-12mm slice, the cooling of normal temperature blower fan; Carry out two-stage mixing subsequently; Getting one section rubber unvulcanizate, vulcanizing agent 0.2-5 part and vulcanization accelerator 0.8-7 part of making drops in the Banbury mixer; Mixing 3-4min; Dump temperature is controlled at 120-130 ℃, through turning refining, cooling off by thickness 8-12mm slice, normal temperature blower fan, promptly gets product heat-resistant and wear-resistant conveyor belt rubber cover.
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