CN103772759A - Anti-tear conveyer belt covering rubber with low rolling resistance and preparation method thereof - Google Patents
Anti-tear conveyer belt covering rubber with low rolling resistance and preparation method thereof Download PDFInfo
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- CN103772759A CN103772759A CN201410023788.8A CN201410023788A CN103772759A CN 103772759 A CN103772759 A CN 103772759A CN 201410023788 A CN201410023788 A CN 201410023788A CN 103772759 A CN103772759 A CN 103772759A
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Abstract
The invention relates to anti-tear conveyer belt covering rubber with low rolling resistance and a preparation method thereof. The formula of the covering rubber comprises the following components in parts by weight: 100 parts of raw rubber systems, 4-8 parts of activating systems, 38-55 parts of reinforcing agents, 2-5 parts of plasticizers, 1-3 parts of fibers, 3-9 parts of anti-aging systems, 1-3 parts of coupling agents and 3-7 parts of vulcanization systems. These components can be prepared into the anti-tear conveyer belt covering rubber with low rolling resistance by the procedures of plastifying, banburying, milling and vulcanizing. On the basis that main body rubber is natural rubber and adopts butadiene rubber, the reinforcing system is subjected to bridging action by adopting an aramid short fiber, the rolling resistance and dynamic heating of the covering rubber are obviously reduced, and meanwhile, the rubber has high tearing resistance, wear-resisting property and anti-fatigue performance.
Description
Technical field
The present invention relates to a kind of anti-tear low-rolling-resistance conveyer belt coating rubber and preparation method thereof, belong to conveying belt technical field.
Background technology
Conveying belt is as the key tool of material transportation in the important industries such as coal, mine, harbour, building materials, electric power, have that traffic capacity is large, transport efficiency advantages of higher, but because conveying belt is subject to many-sided resistance at operational process, also cause a large amount of energy wastees, form larger waste.Through long-term the researching and analysing of conveying belt industry, the suffered most important resistance that is in operation is conveying belt distortion rolling resistance, accounts for 60% of total energy loss.Under conveying belt, rubber cover is normally in service, each during through carrying roller, can be because of stressed generation deformation at carrying roller contact surface, and rubber is viscoelastic material, its adhesive characteristics causes having certain damping loss in its deformation resilience process, by meeting loss portion of energy after the rubber resilience of impression deformation.This part energy reason that namely rolling resistance produces, finally can consume part operation energy.Although existing conveying belt patent has been considered reduction rolling resistance, but the technology adopting all has its limitation, its patent formulation is mainly also used cis-1,4-polybutadiene rubber by main glue, reduce rubber rolling resistance with white carbon black/silane systems, although conveniently have significant effect in reduction rolling resistance, but cause the anti-tear performance of rubber to decline to a great extent simultaneously, brought hidden danger to conveying belt operational process.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of anti-tear low-rolling-resistance conveyer belt coating rubber and preparation method thereof, both reduced conveying belt rolling resistance, guarantee that again it possesses higher tear resistance, met the service requirements of conveying belt under some severe condition.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of anti-tear low-rolling-resistance conveyer belt coating rubber, comprises each components of following parts by weight: 3～7 parts of 100 parts of rubber systems, 4～8 parts of activation systems, 38～55 parts of strengthening agents, 2～5 parts, softening agent, 1～3 part of fiber, 3～9 parts of preventing aging systems, 1～3 part of coupling agent and vulcanization systems.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described rubber system, by the parts by weight of rubber system, comprising: 60～80 parts of natural rubbers (NR), 20～40 parts of cis-1,4-polybutadiene rubbers (BR).
Further, described activation system, by the parts by weight of activation system, comprising: 3～5 parts, zinc oxide, 1～3 part of stearic acid.Stearic acid, i.e. octadecanoic acid, molecular formula C
18h
36o
2, produced by fat hydrolysis, mainly for the production of stearate, every gram is dissolved in 21ml ethanol, 5ml benzene, 2ml chloroform or 6ml tetracol phenixin.
Further, described strengthening agent, by the parts by weight of strengthening agent, comprising: 30～40 parts of carbon blacks, 8～15 parts of high-dispersion white carbon blacks.White carbon black is the general name of white powder X-ray amorphous silicic acid and silicate product, mainly refers to precipitated silica, aerosil, superfine silicon dioxide gel and aerogel, also comprises Powdered synthetic aluminium silicate and Calucium Silicate powder etc.White carbon black is porous material, and it forms available SiO
2nH
2o represents, wherein nH
2o exists with the form of surface hydroxyl.Can be dissolved in caustic alkali and hydrofluoric acid, water insoluble, solvent and acid (except for hydrofluoric acid), high temperature resistant, do not fire, tasteless, odorless, there is good electrical insulating property.
The high-dispersion white carbon black of the high-dispersion white carbon black that the present invention adopts for selling on the market.
The softening agent that the present invention adopts is the softening agent that commercially available model is Nytex810.
Further, described fiber is aramid fiber short fibre (Sulfron).Sulfron is take aramid fiber short fibre Twaron as matrix, take paraffin as carrier and the pre-dispersed new type functional novel material of composite number of chemical medicine modification, comprise two kinds of specifications and models, Sulfron3000 is mainly used in the rubber unvulcanizate of SBR/BR white carbon black reinforcement, and can be used for the SBR(styrene-butadiene rubber(SBR) of black-reinforced) in/BR rubber unvulcanizate; , Sulfron3001 is mainly used in NB/SBR black-reinforced rubber unvulcanizate.
Adopting above-mentioned further improved beneficial effect is that collaborative reinforcing effect between the present invention's high strength of utilizing pretreated aramid fiber short fibre, high tenacity, good chemical stability and the aramid fiber short fibre good dispersiveness and the supporting material that have through pretreated Sulfron makes rubber cover have good physicals, simultaneously aligning between each layer of aramid fiber short fibre, make rubber cover all there is good intensity and toughness at direction of warp and weft, improve significantly anti-tear performance, anti-shear performance, the reduction hysteresis heat-dissipating of rubber cover.
Further, described preventing aging system, by the parts by weight of preventing aging system, comprising: anti-aging agent is 2～6 parts, and Microcrystalline Wax is 1～3 part.
The anti-aging agent that the present invention adopts is that commercially available model is the anti-aging agent of RD and 4010NA, and its outward appearance is that gray purple is to puce particle, fusing point >=70 ℃, relative density 1.14, be dissolved in oils, benzene, acetone, tetracol phenixin, dithiocarbonic anhydride and ethanol, be insoluble in gasoline, water insoluble.Tool is flexible has potent solar heat protection to subdue and oxidation-resistance, thereby gives rubber size fabulous high temperature resistance fatigue and anti-tropism energy.
Microcrystalline Wax is a kind of refining synthetic wax of approximate crystallite character, has good luster, and fusing point is high, the feature of lighter color, and its close structure, hard and lubricious, can melt mutually with various natural waxs, and can improve the fusing point of its low wax, improve the performance of thick property wax.
Further, described vulcanization system is sent out parts by weight by vulcanization system, comprising: 1.0～2.5 parts, sulphur, 2.0～4.5 parts of promotor.
It is the promotor of TBBS and DPG that promotor of the present invention adopts common model in rubber accelerator.Accelerator TBBS claims again accelerator NS, its chemical name is the N-tertiary butyl-2-[4-morpholinodithio time yellow acid amides, TBBS be applicable to NR, SBR, BR with and mixture, vulcanization rate is fast, cross-linked rubber modulus is high, in tire or technical rubber goods formula alone or and with a small amount of ultra fast accelerator, can effectively replace MBTS/DPG system, when consumption can acquisition during at 10% lower level and CBS or MBS modulus on an equal basis mutually.Vulkacit D PG claims again vulkacit D, is white powder, and bitter, has faint smell, to density 1.13～1.19.147 ℃ of fusing points, more than 170 ℃ start to decompose, and are dissolved in benzene, toluene, chloroform, ethanol, acetone, ethyl acetate, are soluble in mineral acid, are slightly soluble in water, and its aqueous solution is strong basicity.Vulkacit D (102-06-7) is mainly as natural rubber and elastomeric moderate accelerator, use this product sizing material to there is discolouration, therefore be not suitable for white and light rubber item, and with the rubber item of Food Contact, vulkacit D (102-06-7) is mainly for the manufacture of offset plate, sole, mechanicals, tire, hard rubber and thick article.
Further, described coupling agent is organo silane coupling agent.
Another technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of preparation method of anti-tear low-rolling-resistance rubber cover, 60～80 parts of natural rubbers are dropped into Banbury mixer plasticated after 30～60 seconds, close refining 30 seconds with 20～40 parts of cis-1,4-polybutadiene rubbers, add 38～55 portions of strengthening agents and 1～3 part of fiber mixing to 120～130 ℃, add again 2～5 parts of softening agent mixing 30～40 seconds, then drop into 4～8 parts of activation systems, 3～9 parts of preventing aging systems and 1～3 part of coupling agent mixing to 150～160 ℃ of discharges; Bin aging after mixing more than 8 hours, adds 3～7 parts of vulcanization systems in Banbury mixer, mixing to 100 ℃ of discharges, turns refining evenly latter cooling lower in mill, obtains described anti-tear low-rolling-resistance rubber cover; Umber wherein all refers to weight part.
Further, the activation system of described 4～8 parts comprises 3～5 parts, zinc oxide, 1～3 part of stearic acid; The strengthening agent of described 38～55 parts comprises: 30～40 parts of carbon blacks, 8～15 parts of high-dispersion white carbon blacks; The fiber of described 1～3 part is aramid fiber short fibre; Described 3～9 parts of preventing aging systems comprise: anti-aging agent is 2～6 parts, and Microcrystalline Wax is 1～3 part; The vulcanization system of described 3～7 parts comprises: 1.0～2.5 parts, sulphur, 2.0～4.5 parts of promotor; The coupling agent of described 1～3 part is organo silane coupling agent; Umber wherein all refers to weight part.
The invention has the beneficial effects as follows: the present invention is natural rubber and uses on the basis of cis-1,4-polybutadiene rubber at main gel, adopt aramid fiber short fibre to carry out bridging action to reinforcement system, significantly reduce rolling resistance, the dynamic heat build up of rubber cover, given rubber higher tear resistance, wear resisting property and anti-fatigue performance simultaneously.
Embodiment
Below principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
65～75 parts of natural rubbers are dropped into Banbury mixer plasticated after 40 seconds, close refining 30 seconds with 25～35 parts of cis-1,4-polybutadiene rubbers, add 55 portions of strengthening agents (40 parts of carbon blacks, 15 parts of high-dispersion white carbon blacks) and 1 part of fiber (aramid fiber short fibre sulfron) mixing to 120 ℃, add again 5 parts of softening agent (Nytex810) mixing 30 seconds, then drop into 6 parts of activation systems (4 parts, zinc oxide, 2 parts of stearic acid), 5 parts of preventing aging systems (anti-aging agent RD and 4010NA3.5 part, Microcrystalline Wax is 1.5 parts) and 1 part of coupling agent (organo silane coupling agent si-69) mixing to 150 ℃ of discharges; Bin aging after mixing is more than 8 hours, in Banbury mixer, add 4.3 parts of vulcanization systems (2.0 parts, sulphur, accelerator TBBS and DPG2.3 part), mixing to 100 ℃ of discharges, in mill, turn refining evenly latter cooling lower, obtain described anti-tear low-rolling-resistance rubber cover; Umber wherein all refers to weight part.
Embodiment 2
65～75 parts of natural rubbers are dropped into Banbury mixer plasticated after 50 seconds, close refining 30 seconds with 25～35 parts of cis-1,4-polybutadiene rubbers, add 50 portions of strengthening agents (40 parts of carbon blacks, 10 parts of high-dispersion white carbon blacks) and 1.5 parts of fibers (aramid fiber short fibre sulfron) mixing to 125 ℃, add again 5 parts of softening agent (Nytex810) mixing 30 seconds, then drop into 7 parts of activation systems (5 parts, zinc oxide, 2 parts of stearic acid), 6 parts of preventing aging systems (anti-aging agent RD and 4010NA4 part, Microcrystalline Wax is 2 parts) and 1 part of coupling agent (organo silane coupling agent si-69) mixing to 155 ℃ of discharges; Bin aging after mixing more than 8 hours, adds 4 parts of vulcanization systems (2 parts, sulphur, accelerator TBBS and DPG2 part) in Banbury mixer, mixing to 100 ℃ of discharges, turns refining evenly latter cooling lower in mill, obtains described anti-tear low-rolling-resistance rubber cover; Umber wherein all refers to weight part.
Embodiment 3
65～75 parts of natural rubbers are dropped into Banbury mixer plasticated after 60 seconds, close refining 30 seconds with 25～35 parts of cis-1,4-polybutadiene rubbers, add 55 portions of strengthening agents (40 parts of carbon blacks, 15 parts of high-dispersion white carbon blacks) and 2 parts of fibers (aramid fiber short fibre sulfron) mixing to 130 ℃, add again 5 parts of softening agent (Nytex810) mixing 40 seconds, then drop into 6.5 parts of activation systems (5 parts, zinc oxide, 1.5 parts of stearic acid), 6 parts of preventing aging systems (anti-aging agent RD and 4010NA4 part, Microcrystalline Wax is 2 parts) and 1.2 parts of coupling agents (organo silane coupling agent si-69) mixing to 160 ℃ of discharges; Bin aging after mixing more than 8 hours, adds 4 parts of vulcanization systems (2 parts, sulphur, accelerator TBBS and DPG2 part) in Banbury mixer, mixing to 100 ℃ of discharges, turns refining evenly latter cooling lower in mill, obtains described anti-tear low-rolling-resistance rubber cover; Umber wherein all refers to weight part.
The anti-tear low-rolling-resistance conveyer belt cover glue performance index that embodiment prepares are as shown in table 1.
Table 1
| Test subject | Unit | Technical requirements | Test-results |
| Hardness | shoreA | 60±5 | 62 |
| Stretch breaking strength | Mpa | ≥20 | 22.5 |
| Elongation rate of tensile failure | % | ≥450 | 520 |
| Shao moors your wear loss | mm3 | ≤120 | 85.6 |
| Resistance coefficient | s | ≥200 | 245 |
| Right-angle tearing | kN/m | ≥80 | 92.0 |
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an anti-tear low-rolling-resistance conveyer belt coating rubber, it is characterized in that, comprise each component of following parts by weight: 3～7 parts of 100 parts of rubber systems, 4～8 parts of activation systems, 38～55 parts of strengthening agents, 2～5 parts, softening agent, 1～3 part of fiber, 3～9 parts of preventing aging systems, 1～3 part of coupling agent and vulcanization systems.
2. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described rubber system, by the parts by weight of rubber system, comprising: 60～80 parts of natural rubbers, 20～40 parts of cis-1,4-polybutadiene rubbers.
3. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described activation system, by the parts by weight of activation system, comprising: 3～5 parts, zinc oxide, 1～3 part of stearic acid.
4. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described strengthening agent, by the parts by weight of strengthening agent, comprising: 30～40 parts of carbon blacks, 8～15 parts of high-dispersion white carbon blacks.
5. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described fiber is aramid fiber short fibre.
6. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described preventing aging system, by the parts by weight of preventing aging system, comprising: anti-aging agent is 2～6 parts, and Microcrystalline Wax is 1～3 part.
7. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described vulcanization system, by the parts by weight of vulcanization system, comprising: 1.0～2.5 parts, sulphur, 2.0～4.5 parts of promotor.
8. anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 1, is characterized in that, described coupling agent is organo silane coupling agent.
9. the preparation method of an anti-tear low-rolling-resistance rubber cover, it is characterized in that, 60～80 parts of natural rubbers are dropped into Banbury mixer plasticated after 30～60 seconds, close refining 30 seconds with 20～40 parts of cis-1,4-polybutadiene rubbers, add 38～55 portions of strengthening agents and 1～3 part of fiber mixing to 120～130 ℃, add again 2～5 parts of softening agent mixing 30～40 seconds, then drop into 4～8 parts of activation systems, 3～9 parts of preventing aging systems and 1～3 part of coupling agent mixing to 150～160 ℃ of discharges; Bin aging after mixing more than 8 hours, adds 3～7 parts of vulcanization systems in Banbury mixer, mixing to 100 ℃ of discharges, turns refining evenly latter cooling lower in mill, obtains described anti-tear low-rolling-resistance rubber cover; Umber wherein all refers to weight part.
10. the preparation method of anti-tear low-rolling-resistance conveyer belt coating rubber according to claim 9, is characterized in that, the activation system of described 4～8 parts comprises 3～5 parts, zinc oxide, 1～3 part of stearic acid; The strengthening agent of described 38～55 parts comprises: 30～40 parts of carbon blacks, 8～15 parts of high-dispersion white carbon blacks; The fiber of described 1～3 part is aramid fiber short fibre; Described 3～9 parts of preventing aging systems comprise: anti-aging agent is 2～6 parts, and Microcrystalline Wax is 1～3 part; The vulcanization system of described 3～7 parts comprises: 1.0～2.5 parts, sulphur, 2.0～4.5 parts of promotor; The coupling agent of described 1～3 part is organo silane coupling agent; Umber wherein all refers to weight part.
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Cited By (11)
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| CN105330906A (en) * | 2015-11-17 | 2016-02-17 | 山东祥通橡塑集团有限公司 | Cover rubber for impact and tear resisting steel cord conveyor belt and preparing method thereof |
| CN105399993A (en) * | 2015-12-21 | 2016-03-16 | 双钱集团（江苏）轮胎有限公司 | Wear-resistant stretch-proof tread rubber material |
| CN106009099A (en) * | 2016-07-29 | 2016-10-12 | 王莹 | Tear-resistant polybutadiene rubber material |
| CN106188685A (en) * | 2016-08-10 | 2016-12-07 | 吴迪 | A kind of preparation method of heat-resisting high tenacity rubber conveyer belt rubber cover |
| CN109651657A (en) * | 2018-12-27 | 2019-04-19 | 山西省山力铂纳橡胶机带有限公司 | A kind of energy conservation conveyer belt cover glue and its production method |
| CN111423636A (en) * | 2020-05-18 | 2020-07-17 | 佛山市丰力工业皮带有限公司 | Manufacturing formula of anti-skid wear-resistant industrial belt |
| CN111732762A (en) * | 2020-05-29 | 2020-10-02 | 浙江保尔力胶带有限公司 | Formula capable of reducing dynamic heat generation of triangular belt primer |
| CN112592520A (en) * | 2020-12-15 | 2021-04-02 | 浙江奋飞橡塑制品有限公司 | Low-roller-resistance energy-saving rubber conveying belt and covering rubber thereof |
| CN113150402A (en) * | 2021-04-14 | 2021-07-23 | 无锡百年通工业输送有限公司 | Formula of energy-saving high-wear-resistance rubber |
| CN114479209A (en) * | 2022-02-28 | 2022-05-13 | 东莞市利群榕兴高分子科技有限公司 | High-elasticity high-strength spacebean high polymer material and preparation method thereof |
| CN115612186A (en) * | 2022-10-19 | 2023-01-17 | 吴善聪 | Preparation method of coating adhesive material on ultrahigh wear-resistant anti-tearing conveying belt |
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| CN105330906A (en) * | 2015-11-17 | 2016-02-17 | 山东祥通橡塑集团有限公司 | Cover rubber for impact and tear resisting steel cord conveyor belt and preparing method thereof |
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| CN106188685A (en) * | 2016-08-10 | 2016-12-07 | 吴迪 | A kind of preparation method of heat-resisting high tenacity rubber conveyer belt rubber cover |
| CN109651657A (en) * | 2018-12-27 | 2019-04-19 | 山西省山力铂纳橡胶机带有限公司 | A kind of energy conservation conveyer belt cover glue and its production method |
| CN111423636A (en) * | 2020-05-18 | 2020-07-17 | 佛山市丰力工业皮带有限公司 | Manufacturing formula of anti-skid wear-resistant industrial belt |
| CN111732762A (en) * | 2020-05-29 | 2020-10-02 | 浙江保尔力胶带有限公司 | Formula capable of reducing dynamic heat generation of triangular belt primer |
| CN112592520A (en) * | 2020-12-15 | 2021-04-02 | 浙江奋飞橡塑制品有限公司 | Low-roller-resistance energy-saving rubber conveying belt and covering rubber thereof |
| CN113150402A (en) * | 2021-04-14 | 2021-07-23 | 无锡百年通工业输送有限公司 | Formula of energy-saving high-wear-resistance rubber |
| CN114479209A (en) * | 2022-02-28 | 2022-05-13 | 东莞市利群榕兴高分子科技有限公司 | High-elasticity high-strength spacebean high polymer material and preparation method thereof |
| CN115612186A (en) * | 2022-10-19 | 2023-01-17 | 吴善聪 | Preparation method of coating adhesive material on ultrahigh wear-resistant anti-tearing conveying belt |
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