CN103435874A - Pure styrene-butadiene rubber steel wire rope core conveying belt core rubber and preparation method thereof - Google Patents
Pure styrene-butadiene rubber steel wire rope core conveying belt core rubber and preparation method thereof Download PDFInfo
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Abstract
The invention relates a pure styrene-butadiene rubber steel wire rope core conveying belt core rubber and a preparation method thereof. The preparation method mainly comprises the following steps of: adding styrene-butadiene rubber into a two-roll mill, then sequentially adding zinc oxide, stearic acid, an antioxidant, adhesion promoter, an adhesive, a softening plasticizer and a reinforcing agent, and standing after milling to obtain a primary section rubber compound; adding sulfur, an accelerant and an adhesive into the primary section rubber compound to perform milling; and adhering core rubber to a steel wire rope, and performing vulcanization on a flat plate vulcanizing instrument to obtain the pure styrene-butadiene rubber steel wire rope core conveying belt core rubber. According to the preparation method, styrene-butadiene rubber is used as a raw rubber system to prepare the steel wire rope conveying belt core rubber, so that the cost is effectively reduced; a reasonable and effective adhesion system is adopted to ensure that the core rubber has good static and dynamic adhesion properties.
Description
Technical field
The present invention relates to pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue and preparation method, can be widely used in long distance, high-intensity steel cable core conveying belt.
Background technology
Conveying belt is the major parts of endless belt conveyor, because of have operational safety, easy to use, be easy to the advantage such as maintenance, being widely used in extensive, the serialization transportation of the industries such as coal, mine, metallurgy, chemical industry, building and traffic, is second largest rubber industry product after tire.
Using wireline as the conveying belt of framework material, is the most representative high-tenacity conveying belt.Because the wireline strength range is wide, powerful high, it is little to extend, the supporting capacity of its adhesive tape is large, groove forming character good, strength of joint is high, long service life, the needs that satisfied long distance, large conveying quantity, high-speed modernization are carried.
At present world economy is recovery trend, and especially developed country's economic recovery such as U.S. has surpassed expection.Brainstrust prediction world economy will keep the situation of recovery, and this will produce larger favourable influence to China's economy and foreign market.The exploitation to Mineral resources is strengthened in the area such as especially Australian, Brazilian, Chilean, and wherein, South America ore company will invest 85,000,000,000 dollars of exploitation ore resource, a large amount of high strength of needs, high performance steel cable core conveying belt within the coming years.Estimate that these countries and regions will increase 700,000,000 dollars newly for the demand of high-tenacity, high performance steel cable core conveying belt.With regard to this single product of Steel Cord Conveyor Belt, this will be very considerable foreign trade market.
In order to promote the market competitiveness, the performance of Steel Cord Conveyor Belt, structure etc. need further research and development, raising.
Steel cable core conveying belt generally consists of core glue, wireline, upper lower caldding layer and limit glue.Wireline is that speciality high carbon steel (the carbon content 0.7% left and right) drawing by a kind of high-quality forms.The Steel Wire Surface that conveying belt is used needs zinc-plated or copper facing, to increase the bounding force between steel wire and rubber, prevents the steel wire corrosion simultaneously, plays certain protective effect.The conveying belt of current industrial production wireline used adopts zinc-plated processing basically.
Bonding between rubber and wireline is the key in the steel cable core conveying belt production and application.In other words, the performance of core glue has determined the work-ing life of Steel Cord Conveyor Belt to a great extent.In numerous core glue of now producing, mostly adopt the good natural gum of bond properties.As everyone knows, the cost of natural gum is somewhat expensive than general synthetic rubber.And wish guarantees to tend to add the good cobalt salt of bonding effect by the bond properties of core glue and wireline, this is very expensive additive.Thereby the cost of core glue is generally higher.
Lee's equality of Fuxin Rubber Co., Ltd adopts the rubber system of full butylbenzene, has prepared the good core glue of static bond properties.Along with test set is constantly perfect these years, simultaneously external client is also relevant for dynamically extracting the requirement of test out, thereby, except examine static bonding, also should consider the bonding dynamic property of core glue and wireline.This performance more can reflect the conveying belt length in work-ing life intuitively.
goal of the invention
The purpose of this invention is to provide a kind of pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue, adopt rationally effectively binding system, make this core glue possess good static state, dynamic bond properties.
Another object of the present invention is to provide a kind of preparation method of styrene-butadiene rubber(SBR) steel cable core conveying belt core glue, and the method adopts pure styrene-butadiene rubber(SBR) to prepare Steel Cord Conveyor Belt core glue as the rubber system, can effectively reduce production costs.
According to technical scheme provided by the invention, a kind of pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue, comprise following component, the component ratio is counted by weight: 100 parts of styrene-butadiene rubber(SBR), 1～8 part of adhesion promotor, 1～12 part of tackiness agent, 1～3 part of sulphur, 1～5 part of zinc oxide, 1～3 part of stearic acid, 1～2.5 part of promotor, 30～60 portions of strengthening agents, 10～40 parts of softening softening agent, 1～5 part of anti-aging agent;
Described styrene-butadiene rubber(SBR) adds in two roller mills, adds successively zinc oxide, stearic acid, anti-aging agent, adhesion promotor, tackiness agent, softening softening agent, strengthening agent, parks after mixing and obtains one section rubber unvulcanizate; In one section rubber unvulcanizate, add sulphur, promotor, tackiness agent to carry out mixing; Core glue and wireline are bonding, on the compression molding instrument, are vulcanized, and obtain described pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue.
As a further improvement on the present invention, described styrene-butadiene rubber(SBR) is synthetic rubber.
As a further improvement on the present invention, described adhesion promotor is one or more in cobalt naphthenate, cobalt boracylate, certain herbaceous plants with big flowers acid cobalt.Selecting and Applying appropriate cobalt salt, can guarantee bonding between rubber and wireline, is the principal element that determines core glue bond performance.
As a further improvement on the present invention, described promotor is N tert butyl benzothiazole 2 sulfenamide (accelerator NS), N cyclohexyl 2 benzothiazole sulfenamide (accelerant CZ), alkyl zinc dithiophosphate (accelerant A C-P84), 4, one or more in 4'-dimorpholinyl disulfide (vulkacit D TDM), tetramethyl-thiuram disulfide (Vulcanization accelerator TMTD).
As a further improvement on the present invention, described strengthening agent is one or more in white carbon black, carbon black N330, carbon black N234, carbon black N220, carbon black N115.
As a further improvement on the present invention, described anti-aging agent is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer (anti-aging agent RD), N-(1, the 3-dimethylbutyl) one or more in-N'-diphenyl-para-phenylene diamine (antioxidant 4020), acetone and pentanoic pyrocondensation thing (antioxidant BLE), can provide good thermo oxidative aging for rubber item.
As a further improvement on the present invention, described tackiness agent is one or more in Resorcinol donor adhesive RS, Resorcinol donor tackiness agent RE, melamine type methylene radical donor tackiness agent RA, tackiness agent XS-132.
As a further improvement on the present invention, described softening softening agent is one or more in aromatic hydrocarbon oil, coumarone, clorafin.
The preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue of the present invention, feature is, comprises the following steps, the component ratio is counted by weight:
(1) one section mixing: add 100 parts of styrene-butadiene rubber(SBR) in two roller mills, 20～40s plasticates, 20～30 ℃ of plasticating temperatures, add successively 1～5 part of zinc oxide, 1～3 part of stearic acid, 1～5 part of anti-aging agent, 1～8 part of adhesion promotor, 1～10 part of tackiness agent, 10～40 parts of softening softening agent, 30 ~ 60 portions of strengthening agents, mixing 15～20min, melting temperature is 40～60 ℃, obtains one section rubber unvulcanizate after parking 12～16h;
(2) two-stage mixing: add 1～3 part of sulphur, 1～2.5 part of promotor, 0～2 part of tackiness agent in the one section rubber unvulcanizate obtained to step (1), mixing 3～6min, melting temperature is 40～60 ℃;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 140～160 ℃, and sulfide stress is 10～15MPa, and curing time is 20～40min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue.Described wirerope diameter is 4.5mm.
The invention has the beneficial effects as follows:
(1) adopt pure styrene-butadiene rubber(SBR) to prepare Steel Cord Conveyor Belt core glue as the rubber system, effectively reduce costs;
(2) adopt rationally effectively binding system, make this core glue possess good static state, dynamic bond properties.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Rubber matrix styrene-butadiene rubber(SBR) of the present invention, have good thermotolerance, ageing resistance, wear resistance, belongs to general synthetic rubber, and its price is on the low side than other rubber.
Adhesion promotor of the present invention is one or more in cobalt naphthenate, cobalt boracylate, certain herbaceous plants with big flowers acid cobalt, Selects and Applies appropriate cobalt salt, can guarantee bonding between rubber and wireline, is the principal element that determines core glue bond performance.
Promotor of the present invention is N tert butyl benzothiazole 2 sulfenamide (accelerator NS), N cyclohexyl 2 benzothiazole sulfenamide (accelerant CZ), alkyl zinc dithiophosphate (accelerant A C-P84), 4, 4'-dimorpholinyl disulfide (vulkacit D TDM), one or more in tetramethyl-thiuram disulfide (Vulcanization accelerator TMTD), Select and Apply suitable cross-linking system, guarantee that rubber unvulcanizate has good coke burning performance, being beneficial to the later stage carries out Compound Machining, simultaneously, obtain good crosslinking structure, make cross-linked rubber there is excellent physical and mechanical properties.
Strengthening agent of the present invention is middle white carbon black, super abrasion resistant carbon black N220, carbon black N234, super-high wear-resistant carbon black N115 or high abrasion furnace carbon black N330.
Anti-aging agent of the present invention is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer (anti-aging agent RD), N-(1, the 3-dimethylbutyl) one or more in-N'-diphenyl-para-phenylene diamine (antioxidant 4020), acetone and pentanoic pyrocondensation thing (antioxidant BLE), can provide good thermo oxidative aging for rubber item.
Tackiness agent of the present invention is one or more in Resorcinol donor adhesive RS, Resorcinol donor tackiness agent RE, melamine type methylene radical donor tackiness agent RA, tackiness agent XS-132.
Softening softening agent of the present invention is one or more in aromatic hydrocarbon oil, coumarone, clorafin.
Stearic acid of the present invention is not specifically limited, only otherwise goal of the invention of the present invention is produced to restriction to be got final product; The stearic acid adopted in the embodiment of the present invention derives from Danyang City's victory and reaches chemical industry company limited.
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1: a kind of preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue comprises the following steps:
(1) one section is mixing: add 600g styrene-butadiene rubber(SBR) in two roller mills, and the 40s that plasticates, plasticating temperature is 25 ℃; Then add successively 6g zinc oxide, 12g stearic acid, 10g anti-aging agent RD, 10g antioxidant BLE, 10g antioxidant 4020,6g cobalt naphthenate, 6g tackiness agent XS-132,60g white carbon black, 12g aromatic hydrocarbon oil, 48g clorafin, 120g carbon black N220, mixing 18min, melting temperature is 40 ℃, obtains one section rubber unvulcanizate after parking 12h;
(2) two-stage mixing: add 18g sulphur, 2g accelerant CZ, 3g accelerant A C-P84,1g promotor TT in the one section rubber unvulcanizate obtained to step (1), mixing 4min, melting temperature is 50 ℃, obtains core glue;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 140 ℃, and sulfide stress is 10MPa, and curing time is 30min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue; Described wirerope diameter is 4.5mm.The physical and mechanical properties of this core glue and static state, dynamically bond properties is as shown in table 1.
Embodiment 2: a kind of preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue comprises the following steps:
(1) one section is mixing: add 600g styrene-butadiene rubber(SBR) in two roller mills, and the 20s that plasticates, plasticating temperature is 20 ℃; Then add successively 15g zinc oxide, 12g stearic acid, 5g anti-aging agent RD, 10g antioxidant BLE, 6g adhesive RS, 18g cobalt naphthenate, 6g certain herbaceous plants with big flowers acid cobalt, 24g tackiness agent XS-132,90g white carbon black, 60g coumarone, 180g clorafin, 180g carbon black N330, mixing 15min, melting temperature is 45 ℃, obtains one section rubber unvulcanizate after parking 14h;
(2) two-stage mixing: add 18g sulphur, 3g vulkacit D TDM, 3g accelerant A C-P84,3g accelerant CZ, 6g tackiness agent RA in the one section rubber unvulcanizate obtained to step (1), mixing 5min, melting temperature is 40 ℃, obtains core glue;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 145 ℃, and sulfide stress is 13MPa, and curing time is 20min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue; Described wirerope diameter is 4.5mm.The physical and mechanical properties of this core glue and static state, dynamically bond properties is as shown in table 1.
Embodiment 3: a kind of preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue comprises the following steps:
(1) one section is mixing: add 600g styrene-butadiene rubber(SBR) in two roller mills, and the 30s that plasticates, plasticating temperature is 30 ℃; Then add successively 30g zinc oxide, 6g stearic acid, 6g antioxidant 4020,48g certain herbaceous plants with big flowers acid cobalt, 12g tackiness agent RE, 48g tackiness agent XS-132,180g white carbon black, 45g aromatic hydrocarbon oil, 105g clorafin, 180g carbon black N234, mixing 20min, melting temperature is 55 ℃, obtains one section rubber unvulcanizate after parking 13h;
(2) two-stage mixing: add 6g sulphur, 6g accelerant CZ, 9g accelerator NS, 12g tackiness agent RA in the one section rubber unvulcanizate obtained to step (1), mixing 6min, melting temperature is 60 ℃, obtains core glue;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 160 ℃, and sulfide stress is 15MPa, and curing time is 25min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue; The physical and mechanical properties of this core glue and static state, dynamically bond properties is as shown in table 1.
Embodiment 4: a kind of preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue comprises the following steps:
(1) one section is mixing: add 600g styrene-butadiene rubber(SBR) in two roller mills, and the 35s that plasticates, plasticating temperature is 27 ℃; Then add successively 24g zinc oxide, 9g stearic acid, 12g anti-aging agent RD, 12g antioxidant 4020,24g cobalt naphthenate, 6g cobalt boracylate, 12g tackiness agent RE, 12g adhesive RS, 60g white carbon black, 60g aromatic hydrocarbon oil, 60g coumarone, 120g carbon black N220,120g carbon black N330, mixing 17min, melting temperature is 45 ℃, obtains one section rubber unvulcanizate after parking 16h;
(2) two-stage mixing: add 9g sulphur, 6g vulkacit D TDM, 6g accelerator NS, 24 tackiness agent RA in the one section rubber unvulcanizate obtained to step (1), mixing 5min, melting temperature is 45 ℃, obtains core glue;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 155 ℃, and sulfide stress is 14MPa, and curing time is 35min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue; Described wirerope diameter is 4.5mm.The physical and mechanical properties of this core glue and static state, dynamically bond properties is as shown in table 1.
Embodiment 5: a kind of preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue comprises the following steps:
(1) one section is mixing: add 600g styrene-butadiene rubber(SBR) in two roller mills, and the 30s that plasticates, plasticating temperature is 22 ℃; Then add successively 30g zinc oxide, 6g stearic acid, 9g anti-aging agent RD, 6g antioxidant BLE, 15g cobalt boracylate, 45g tackiness agent XS-132,90g white carbon black, 180g clorafin, 270g carbon black N220, mixing 19min, melting temperature is 57 ℃, obtains one section rubber unvulcanizate after parking 16h;
(2) two-stage mixing: add 15g sulphur, 6g accelerant A C-P84,6g accelerator NS in the one section rubber unvulcanizate obtained to step (1), mixing 5min, melting temperature is 60 ℃, obtains core glue;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 150 ℃, and sulfide stress is 11MPa, and curing time is 40min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue; Described wirerope diameter is 4.5mm.The physical and mechanical properties of this core glue and static state, dynamically bond properties is as shown in table 1.
Measuring method of the present invention is according to following standard:
The physical and mechanical properties testing method of pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue is carried out the mechanical property of test compound material by ASTM D412 standard; Stretching experiment adopts the wide cut-off knife of 6.00mm dumbbell plate processed without exception; Draw speed is 500mm/min, and probe temperature is 25 ℃; The static bounding force test in the aging front and back of this core glue is undertaken by GB/T 5755 standards, and draw speed is 100mm/min, and probe temperature is 25 ℃; The testing method that dynamically the bounding force test is mentioned according to MT 668 is carried out.
Table 1: the embodiment of the present invention 1～5 stretches and bond properties
Wirerope diameter 4.5mm
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Tensile strength/MPa | 17.8 | 16.7 | 16.4 | 18.8 | 21.7 |
| 300% tensile modulus/MPa | 12.0 | 12.1 | 8.9 | 14.8 | 13.0 |
| Elongation at break/% | 405 | 392 | 480 | 414 | 478 |
| Shao A hardness/° | 73 | 72 | 74 | 75 | 73 |
| Normal temperature adhesive/kN/m | 142 | 130 | 140 | 140 | 176 |
| Aging bonding/kN/m | 132 | 119 | 138 | 130 | 135 |
| Dynamically bonding/time | 10512 | 14412 | 11688 | 22362 | 20114 |
Claims (10)
1. a pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue, it is characterized in that, comprise following component, the component ratio is counted by weight: 100 parts of styrene-butadiene rubber(SBR), 1～8 part of adhesion promotor, 1～12 part of tackiness agent, 1～3 part of sulphur, 1～5 part of zinc oxide, 1～3 part of stearic acid, 1～2.5 part of promotor, 30～60 portions of strengthening agents, 10～40 parts of softening softening agent, 1～5 part of anti-aging agent;
Described styrene-butadiene rubber(SBR) adds in two roller mills, adds successively zinc oxide, stearic acid, anti-aging agent, adhesion promotor, tackiness agent, softening softening agent, strengthening agent, parks after mixing and obtains one section rubber unvulcanizate; In one section rubber unvulcanizate, add sulphur, promotor, tackiness agent to carry out mixing; Core glue and wireline are bonding, on the compression molding instrument, are vulcanized, and obtain described pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue.
2. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, is characterized in that, described styrene-butadiene rubber(SBR) is synthetic rubber.
3. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, is characterized in that, described adhesion promotor is one or more in cobalt naphthenate, cobalt boracylate, certain herbaceous plants with big flowers acid cobalt.
4. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, it is characterized in that, described promotor is N tert butyl benzothiazole 2 sulfenamide, N cyclohexyl 2 benzothiazole sulfenamide, alkyl zinc dithiophosphate, 4, one or more in 4 '-dimorpholinyl disulfide, tetramethyl-thiuram disulfide.
5. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, is characterized in that, described strengthening agent is one or more in white carbon black, carbon black N330, carbon black N234, carbon black N220, carbon black N115.
6. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, it is characterized in that, described anti-aging agent is 2,2,4-trimethylammonium-1,2-dihyaroquinoline polymer, N-(1,3-dimethylbutyl) one or more in-N'-diphenyl-para-phenylene diamine, acetone and pentanoic pyrocondensation thing.
7. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, it is characterized in that, described tackiness agent is one or more in Resorcinol donor adhesive RS, Resorcinol donor tackiness agent RE, melamine type methylene radical donor tackiness agent RA, tackiness agent XS-132.
8. pure styrene-butadiene rubber(SBR) steel cable core conveying belt core glue according to claim 1, is characterized in that, described softening softening agent is one or more in aromatic hydrocarbon oil, coumarone, clorafin.
9. the preparation method of a pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue, is characterized in that, comprise the following steps, the component ratio is counted by weight:
((1) one section mixing: add 100 parts of styrene-butadiene rubber(SBR) in two roller mills, 20～40s plasticates, 20～30 ℃ of plasticating temperatures, add successively 1～5 part of zinc oxide, 1～3 part of stearic acid, 1～5 part of anti-aging agent, 1～8 part of adhesion promotor, 1～10 part of tackiness agent, 10～40 parts of softening softening agent, 30 ~ 60 portions of strengthening agents, mixing 15～20min, melting temperature is 40～60 ℃, obtains one section rubber unvulcanizate after parking 12～16h;
(2) two-stage mixing: add 1～3 part of sulphur, 1～2.5 part of promotor, 0～2 part of tackiness agent in the one section rubber unvulcanizate obtained to step (1), mixing 3～6min, melting temperature is 40～60 ℃;
(3) the core glue and the wireline that step (2) are obtained are bonding, on vulcanizing press, are vulcanized, and curing temperature is 140～160 ℃, and sulfide stress is 10～15MPa, and curing time is 20～40min, obtain described pure butylbenzene Steel Cord Conveyor Belt core glue.
10. the preparation method of pure styrene-butadiene rubber(SBR) Steel Cord Conveyor Belt core glue according to claim 9, is characterized in that, described wirerope diameter is 4.5mm.
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Application publication date: 20131211 |