CN210001806U - Flame-retardant conveying belt - Google Patents
Flame-retardant conveying belt Download PDFInfo
- Publication number
- CN210001806U CN210001806U CN201821574482.1U CN201821574482U CN210001806U CN 210001806 U CN210001806 U CN 210001806U CN 201821574482 U CN201821574482 U CN 201821574482U CN 210001806 U CN210001806 U CN 210001806U
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- utility
- aramid fiber
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 91
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000003292 glue Substances 0.000 claims abstract description 112
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 55
- 229920001971 elastomer Polymers 0.000 claims description 131
- 239000005060 rubber Substances 0.000 claims description 131
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- 239000004760 aramid Substances 0.000 claims description 9
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- 238000002156 mixing Methods 0.000 description 58
- 239000006229 carbon black Substances 0.000 description 48
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 42
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- 229920003052 natural elastomer Polymers 0.000 description 39
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- 239000003795 chemical substances by application Substances 0.000 description 32
- 239000011787 zinc oxide Substances 0.000 description 31
- 239000005062 Polybutadiene Substances 0.000 description 29
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- 229920002857 polybutadiene Polymers 0.000 description 29
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 27
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- 230000003712 anti-aging effect Effects 0.000 description 25
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 25
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 25
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- 239000011593 sulfur Substances 0.000 description 23
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 19
- 239000000853 adhesive Substances 0.000 description 18
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- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 13
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- 230000005540 biological transmission Effects 0.000 description 11
- 239000000314 lubricant Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000006087 Silane Coupling Agent Substances 0.000 description 10
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 9
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
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- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 4
- 239000004114 Ammonium polyphosphate Substances 0.000 description 4
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- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 4
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- JSEQNGYLWKBMJI-UHFFFAOYSA-N 9,9-dimethyl-10h-acridine Chemical compound C1=CC=C2C(C)(C)C3=CC=CC=C3NC2=C1 JSEQNGYLWKBMJI-UHFFFAOYSA-N 0.000 description 3
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- 229940032017 n-oxydiethylene-2-benzothiazole sulfenamide Drugs 0.000 description 2
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- BNCADMBVWNPPIZ-UHFFFAOYSA-N 2-n,2-n,4-n,4-n,6-n,6-n-hexakis(methoxymethyl)-1,3,5-triazine-2,4,6-triamine Chemical compound COCN(COC)C1=NC(N(COC)COC)=NC(N(COC)COC)=N1 BNCADMBVWNPPIZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 241000221535 Pucciniales Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
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- 239000004917 carbon fiber Substances 0.000 description 1
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Abstract
The utility model provides an flame-retardant conveyor belt, including the lower cover glue film, set up in the aramid fiber casing ply on the lower cover glue film, set up in the buffer layer on the aramid fiber casing ply, set up in the last cover glue film on the buffer layer, wherein, all adopt high bonding core glue to bond between lower cover glue film, aramid fiber casing ply, buffer layer and the last cover glue film, aramid fiber casing ply is the straight latitude aramid fiber canvas of diameter, the utility model discloses a select straight latitude aramid fiber canvas of straight warp, can reduce driving roller diameter, reduce motor drive power.
Description
Technical Field
The utility model belongs to the technical field of the rubber conveyer belt technique and specifically relates to a kinds of fire-retardant conveyer belt is related to.
Background
The steel wire rope core conveying belt still has a dominant position in the aspects of long-distance and heavy-load transportation as a high-strength heavy conveying belt, but the steel wire rope core conveying belt has poor tear resistance, is easy to tear longitudinally, has poor water resistance and penetration resistance, is penetrated by th covering glue, water can penetrate into the steel wire rope core to corrode a steel wire rope, the service life is shortened, the modulus is high, the bending performance is poor, the diameter of a roller of the conveyer is required to be larger, the belt is thick, the specific gravity is large, and the power consumption is large.
With the development of long distance, high speed, large width and large transportation capacity of the conveying belt, the strength level of the required conveying belt is higher and higher, and therefore the power consumption is higher and higher. At the present time of energy shortage, the nation advocates energy conservation and emission reduction, green manufacturing, low carbon and emission reduction, energy conservation and consumption reduction, which is the current development trend. The conveyor belt industry is also developing towards the direction of energy saving, material saving, safety and environmental protection. The energy conservation of the conveyer belt is discussed, the power energy consumption of the conveyer belt is controlled, the operation cost is reduced, and good benefits are brought to production enterprises, use units and society.
The factors influencing the energy consumption of the conveying belt are many, and the conveying belt mainly comprises the following aspects: the belt body has heavy weight, so that the load of a motor is increased; the conveying belt slips on the carrier roller to do idle work, so that the conveying of materials is influenced; mounting a conveying belt; transporting the mechanical structure; dynamic mechanical properties of conveyer belt rubber, and the like.
The aramid fiber is of three high-tech fibers (aramid fiber, carbon fiber and ultra-high molecular weight polyethylene fiber) in the world at present, has high strength, high modulus, low elongation and creep rate and good thermal stability, and is generally the quality of steel, but different from steel, the density of the aramid fiber is 1.44g/cm3, is only equivalent to which is five times of the density of the steel, and has good chemical resistance and fatigue resistance.
With the industrial mature application of novel high-strength synthetic fiber materials, the trend that the steel wire rope core flame-retardant conveyor belt is gradually replaced by the high-strength fabric core conveyor belt is shown based on the requirement of enhancing the self-transportation capacity of the conveyor and reducing the self-ineffective load of the conveyor, namely reducing the weight of the conveyor belt body, so that the development of energy-saving, environment-friendly and thin flame-retardant conveyor belts is very necessary.
SUMMERY OF THE UTILITY MODEL
In view of this, the to-be-solved technical problem of the utility model lies in providing kinds of fire-retardant conveyer belt, the utility model provides a fire-retardant conveyer belt thickness is thin, hysteresis loss is low, running resistance is low, operating efficiency is high.
The utility model provides an fire-retardant transmission bands, include:
covering a glue layer under the low rolling resistance flame retardant;
the aramid fiber framework layer is arranged on the lower covering glue layer;
the buffer layer is arranged on the aramid fiber framework layer;
an upper covering glue layer arranged on the buffer layer;
wherein the lower covering glue layer, the aramid fiber framework layer, the buffer layer and the upper covering glue layer are bonded by high-bonding core glue;
the aramid fiber framework layer is made of diameter straight weft aramid fiber canvas.
Preferably, the aramid framework layer is DPP (dipeptidyl peptidase) diameter straight weft aramid canvas; the strength grade is 500-4000N/mm;
preferably, the thickness ratio of the lower covering glue layer, the aramid fiber framework layer, the buffer layer and the upper covering glue layer is (5-10): (1.5-5): (0.5-1.5): (5-10).
Preferably, the thickness of the lower covering glue layer is 5-10 mm.
Preferably, the thickness of the aramid fiber framework layer is 1.5-5 mm.
Preferably, the thickness of the high-adhesion core glue is 1.5-3.5 mm.
Preferably, the thickness of the buffer layer is 0.5-1.5 mm;
preferably, the cushion layer is any selected from aramid mesh fabric, nylon impregnated canvas, polyester mesh fabric and polyester impregnated canvas.
Preferably, the thickness of the upper covering glue layer is 1.5-5 mm.
Compared with the prior art, the utility model provides kinds of fire-retardant transmission bands, including kinds of fire-retardant transmission bands, including the fire-retardant lower cover glue film of low rolling resistance, set up in the aramid fiber casing ply on the glue film of lower cover, set up in the buffer layer on the aramid fiber casing ply, set up in the last cover glue film on the buffer layer, wherein, all adopt the high adhesive core glue to bond between lower cover glue film, aramid fiber casing ply, buffer layer and the last cover glue film, the aramid fiber casing ply is diameter straight latitude aramid fiber canvas.
Drawings
Fig. 1 is a schematic structural diagram of the conveyor belt according to technical solutions of the present invention.
Detailed Description
The present invention provides flame retardant conveyor belts and methods for making the same, wherein the skilled in the art can use the contents of the text to properly modify the process parameters for implementation, it is particularly noted that all similar substitutions and modifications will be apparent to those skilled in the art and are within the scope of the present invention.
The utility model provides an fire-retardant transmission bands, include:
covering a glue layer under the low rolling resistance flame retardant;
the aramid fiber framework layer is arranged on the lower covering glue layer;
the buffer layer is arranged on the aramid fiber framework layer;
an upper covering glue layer arranged on the buffer layer;
wherein the lower covering glue layer, the aramid fiber framework layer, the buffer layer and the upper covering glue layer are bonded by high-bonding core glue;
the aramid fiber framework layer is made of diameter straight weft aramid fiber canvas.
The utility model provides a fire-retardant transmission band, including the low fire-retardant lower cover glue film that rolls of hindering. The lower covering glue layer is formed by the following components:
60-80 parts of natural rubber, 20-40 parts of butadiene rubber, 3-5 parts of nano zinc oxide, 1-2 parts of stearic acid, 1.5-3 parts of sulfur, 2-4 parts of microcrystalline wax, 2.5-4 parts of an anti-aging agent, 1.5-2.5 parts of a silane coupling agent, 1-2 parts of a low-heat-generation auxiliary agent, 10-15 parts of white carbon black, 10-15 parts of nano hydrated aluminum silicate F10010, 10-15 parts of aluminum hydroxide, 5-7 parts of antimony trioxide, 30-40 parts of a solid flame retardant and 35-45 parts of carbon black N55035.
The lower cover glue film be the glue film of pressing close to mutually with the roller.
The lower covering rubber layer provided by the utility model comprises 60-80 parts by weight of natural rubber; preferably 62 to 78 parts by weight of natural rubber; more preferably 65 to 75 parts by weight of natural rubber; most preferably 68 to 72 parts by weight of natural rubber. The utility model discloses do not restrict its source, the market can.
The natural rubber is natural polymer compounds containing polyisoprene as main component, and the molecular formula is (C)5H8) And n, wherein 91-94% of the components are rubber hydrocarbon (polyisoprene), and the balance is non-rubber substances such as protein, fatty acid, ash, saccharides and the like.
The lower covering glue layer provided by the utility model comprises 20-40 parts by weight of butadiene rubber; preferably, the rubber composition comprises 22-38 parts by weight of butadiene rubber; more preferably, the rubber composition comprises 25 to 35 parts by weight of butadiene rubber. The utility model discloses do not restrict its source, the market can.
The styrene butadiene rubber of the present invention is not limited, and those skilled in the art are familiar with the present invention. Cis-butadiene rubber is short for cis-1, 4-polybutadiene rubber, and the molecular formula of the cis-butadiene rubber is (C4H6) n, and the cis-butadiene rubber belongs to a mixture. Compared with natural rubber and styrene butadiene rubber, the butadiene rubber has the characteristics of high elasticity, good wear resistance, good cold resistance, low heat generation, good bending resistance, good dynamic performance and the like.
The lower covering glue provided by the utility model comprises 3-5 parts by weight of nano zinc oxide; preferably, the nano zinc oxide coating comprises 3-4 parts by weight of nano zinc oxide.
The nano zinc oxide of the present invention is not limited, and those skilled in the art will be familiar with the present invention. The utility model discloses do not restrict its source, the market can. The utility model preferably adopts the nano zinc oxide with the grain diameter of 1-100 nm.
The lower covering glue provided by the utility model comprises 1-2 parts by weight of stearic acid; preferably, the stearic acid is included in an amount of 1.0 to 1.5 parts by weight.
The lower covering rubber provided by the utility model comprises 1.5-3 parts by weight of sulfur; preferably, the sulfur-containing composition comprises 2 to 3 parts by weight of sulfur.
The lower covering glue provided by the utility model comprises 2-4 parts by weight of microcrystalline wax; preferably, the wax comprises 2.5-3.5 parts by weight of microcrystalline wax.
The utility model discloses right the source of stearic acid, sulphur and micrite wax is not injectd, and the market is sold can.
The lower covering rubber provided by the utility model comprises 2.5-4 parts by weight of anti-aging agent; preferably, the antioxidant comprises 2.5 to 3.5 parts by weight of antioxidant.
The anti-aging agent of the utility model is preferably selected from two or more than two of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl-p-phenylenediamine and 9, 9-dimethylacridine. The antioxidant of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The lower covering glue provided by the utility model comprises 1.5-2.5 parts by weight of silane coupling agent; preferably, the silane coupling agent comprises 1.8-2.3 parts by weight of silane coupling agent.
The silane coupling agent of the utility model is preferably selected from or the combination of Si69, Si75 and super silane Si 747.
The lower covering glue provided by the utility model comprises 1-2 parts by weight of low heat generation auxiliary agent; preferably, the low heat generation auxiliary agent comprises 1.2-1.8 parts by weight.
The low heat generation auxiliary agent of the utility model preferably comprises LG-1520, rhinestone powder 12 and rhinestone powder 25.
The lower covering rubber provided by the utility model comprises 10-15 parts by weight of white carbon black; preferably, the white carbon black comprises 11-14 parts by weight of white carbon black.
The lower covering glue provided by the utility model comprises 10-15 parts by weight of nano hydrated aluminum silicate; preferably, the nano aluminum silicate hydrate comprises 11-14 parts by weight; more preferably, the nano hydrated aluminum silicate comprises 12-13 parts by weight.
The utility model discloses it is preferable nanometer hydrated aluminium silicate F100 to the nanometer hydrated aluminium silicate. The utility model discloses do not restrict its source, the market can.
The lower covering glue provided by the utility model comprises 10-15 parts by weight of aluminum hydroxide; preferably 11 to 14 parts by weight of aluminum hydroxide; more preferably, the aluminum hydroxide is contained in an amount of 12 to 13 parts by weight. The utility model discloses do not restrict its source, the market can.
The lower covering glue provided by the utility model comprises 5-7 parts by weight of antimony trioxide; preferably, the antimony trioxide is included in an amount of 5 to 6 parts by weight. The utility model discloses do not restrict its source, the market can.
The lower covering rubber provided by the utility model comprises 30-40 parts by weight of solid flame retardant; preferably, the flame retardant comprises 32-38 parts by weight of a solid flame retardant; more preferably 34 to 36 parts by weight of a solid flame retardant.
The solid flame retardant of the utility model is preferably selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate; more preferably, silicon-based flame retardants and intumescent flame retardants are included.
The flame retardant lubricant of the present invention is preferably MB-202.
The covering rubber provided by the utility model comprises 35-45 parts by weight of carbon black; preferably 35 to 43 parts by weight of carbon black; more preferably 37 to 40 parts by weight of carbon black.
The carbon black of the present invention is preferably carbon black N550.
The utility model discloses among the preferred embodiment of parts, the cover gum includes natural rubber 62 ~ 78 parts by weight, butadiene rubber 22 ~ 38 parts by weight, 3 ~ 4 parts by weight of nanometer zinc oxide, 1 ~ 2 parts by weight of stearic acid, 1.5 ~ 3 parts by weight of sulphur, 2 ~ 4 parts by weight of microcrystalline wax, 2.5 ~ 4 parts by weight of anti-aging agent, 1.5 ~ 2.5 parts by weight of silane coupling agent, 1 ~ 2 parts by weight of low-heat-generation auxiliary agent, 11 ~ 14 parts by weight of white carbon black, 11 ~ 14 parts by weight of nanometer hydrated aluminum silicate, 11 ~ 14 parts by weight of aluminum hydroxide, 5 ~ 7 parts by weight of antimony trioxide, 32 ~ 38 parts by weight of solid flame retardant, 37 ~ 42 parts by weight of carbon black.
The thickness of the lower covering glue layer of the utility model is preferably 5-10 mm; more preferably 6 to 9 mm.
The utility model discloses select to glue as the main part of covering down by natural rubber, butylbenzene glue, cis-butadiene rubber and constitute, solve and use the easy glued roller of neoprene glue, scorch, the short scheduling process problem of dwell time. Meanwhile, the specific low rolling resistance flame-retardant lower covering rubber has low rubber material heat generation and small hysteresis loss tan delta, reduces the running resistance between the lower covering rubber and a carrier roller in the running of a conveyor belt, and reduces energy consumption.
The utility model provides a fire-retardant transmission band, including set up in cover aramid fiber casing ply on the glue film down.
The aramid framework layer of the utility model is DPP diameter straight weft aramid canvas; the strength grade is 500-4000N/mm.
The thickness of the aramid fiber framework layer of the utility model is preferably 1.5-5 mm; more preferably 2 to 4 mm.
The utility model discloses use straight latitude aramid fiber canvas of straight warp that excels in to make the conveyer belt as framework material, solve the easy vertical tear of wire rope core conveyer belt, the bending property is poor, wire rope easily receives the tide and rusts and reduce life scheduling problem, compare with the standard wire rope core conveyer belt of same intensity level moreover, area body thickness attenuate, dead weight greatly reduced. The diameter of the driving roller can be reduced, and the driving power of the motor can be reduced. The utility model discloses well framework material adopts the straight latitude canvas of straight warp of aramid fiber gumming of high strength, and the conveyer belt intensity rank of production can reach 4000N/mm.
The utility model provides a fire-retardant transmission band, including set up in buffer layer on the aramid fiber casing ply.
The utility model discloses arbitrary of buffer layer preferred selection in aramid fiber eyelet fabric, nylon gummed canvas, polyester eyelet fabric and the polyester gummed canvas the utility model discloses do not inject its concrete specification, can that technical staff is familiar with, the utility model discloses do not inject its source, the market can.
The thickness of the buffer layer of the utility model is preferably 0.5-1.5 mm; more preferably 0.8 to 1.3 mm.
The utility model discloses the buffer layer can improve conveyer belt shock resistance, advances steps of protection casing ply, prolongs the life of casing ply.
The utility model provides a fire-retardant transmission band, including set up in last cover glue film on the buffer layer.
Go up the cover glue film and form by following component:
0-20 parts of natural rubber, 60-80 parts of styrene butadiene rubber, 20-30 parts of butadiene rubber, 3-6 parts of zinc oxide, 0-2 parts of stearic acid, 1-2 parts of an accelerator, 2-4 parts of an anti-aging agent, 1-2 parts of paraffin, 1.5-3 parts of sulfur, 1-3 parts of antimony trioxide, 3-6 parts of chlorinated paraffin, 50-70 parts of a solid flame retardant, 10-15 parts of a flame-retardant lubricant and 35-45 parts of carbon black.
The upper covering rubber provided by the utility model comprises 0-20 parts by weight of natural rubber; preferably 2 to 18 parts by weight of natural rubber; more preferably 5 to 17 parts by weight of natural rubber; most preferably 10 to 16 parts by weight of natural rubber. The utility model discloses do not restrict its source, the market can.
The natural rubber is natural polymer compounds containing polyisoprene as main component, and the molecular formula is (C)5H8) And n, wherein 91-94% of the components are rubber hydrocarbon (polyisoprene), and the balance is non-rubber substances such as protein, fatty acid, ash, saccharides and the like.
The upper covering rubber provided by the utility model comprises 60-80 parts by weight of styrene butadiene rubber; preferably 60-75 parts by weight of styrene butadiene rubber; more preferably, the styrene-butadiene rubber comprises 60 to 70 parts by weight of styrene-butadiene rubber. The utility model discloses do not restrict its source, the market can.
The styrene butadiene rubber of the present invention is not limited, and those skilled in the art are familiar with the present invention. Styrene Butadiene Rubber (SBR), also known as polystyrene butadiene copolymer. The physical and mechanical properties, processing property and product use property are close to natural rubber, some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed are better than those of natural rubber, and the rubber is mainly used for manufacturing tires, conveyer belts, rubber tubes, adhesive sponge rubber, impregnated fibers and fabrics and can also be directly used as an adhesive and a coating. The preferred trade mark of butylbenzene rubber is 1502.
The upper covering rubber provided by the utility model comprises 20-30 parts by weight of butadiene rubber; preferably, the rubber composition comprises 22-30 parts by weight of butadiene rubber; more preferably, the rubber composition contains 25 to 30 parts by weight of butadiene rubber.
Cis-butadiene rubber is short for cis-1, 4-polybutadiene rubber, and the molecular formula of the cis-butadiene rubber is (C4H6) n, and the cis-butadiene rubber belongs to a mixture. The butadiene rubber of the present invention is not limited, and those skilled in the art are familiar with the butadiene rubber. The utility model discloses do not restrict its source, the market can.
The upper covering glue provided by the utility model comprises 3-6 parts by weight of zinc oxide; preferably 3 to 5 parts by weight of zinc oxide; more preferably 4 to 5 parts by weight of zinc oxide.
The zinc oxide of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The upper covering glue provided by the utility model comprises 0-2 parts by weight of stearic acid; preferably, the stearic acid is included in an amount of 0.5 to 1.5 parts by weight.
The upper covering glue provided by the utility model comprises 1-2 parts by weight of accelerant; preferably, the accelerator comprises 1.5-2 parts by weight.
The accelerator of the present invention is preferably selected from two or more of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazolesulfenamide, N-oxydiethylene-2-benzothiazolesulfenamide and tetramethylthiuram disulfide.
The accelerator of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The upper covering glue provided by the utility model comprises 2-4 parts by weight of anti-aging agent; preferably, the antioxidant comprises 2.5 to 3.5 parts by weight of antioxidant.
The anti-aging agent of the utility model is preferably selected from two or more than two of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl-p-phenylenediamine and 9, 9-dimethylacridine. The antioxidant of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The upper covering glue provided by the utility model comprises 1-2 parts by weight of paraffin; preferably, the wax includes 1.5 to 2 parts by weight of paraffin wax.
The upper covering glue provided by the utility model comprises 1.5-3 parts by weight of sulfur; preferably 1.8-2.8 weight parts of sulfur.
The upper covering glue provided by the utility model comprises 1-3 parts by weight of antimony trioxide; preferably, the antimony trioxide is included in an amount of 1.5 to 2.5 parts by weight.
The upper covering glue provided by the utility model comprises 3-6 parts by weight of chlorinated paraffin; preferably, the chlorinated paraffin comprises 4-6 parts by weight of chlorinated paraffin; more preferably, the chlorinated paraffin is contained in an amount of 4.5 to 6 parts by weight.
The upper covering glue provided by the utility model comprises 50-70 parts by weight of solid flame retardant; preferably, the flame retardant comprises 55-65 parts by weight of solid flame retardant.
The solid flame retardant is selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate. Preferably including silicon based flame retardants and intumescent flame retardants.
The upper covering glue provided by the utility model comprises 10-15 parts by weight of flame-retardant lubricant; preferably 10 to 14 parts by weight of a flame-retardant lubricant; more preferably, the flame-retardant lubricant comprises 10 to 13 parts by weight of the flame-retardant lubricant.
The flame retardant lubricant of the present invention is preferably MB-202.
The upper covering rubber provided by the utility model comprises 35-45 parts by weight of carbon black; preferably 35 to 43 parts by weight of carbon black; more preferably 37 to 40 parts by weight of carbon black.
The utility model discloses right the sources of zinc oxide, stearic acid, promoter, antiager, paraffin, sulphur, antimony trioxide, chlorinated paraffin, solid flame retardant, fire-retardant emollient and carbon black do not inject, and the market is sold can.
The thickness of the upper covering glue of the utility model is preferably 5-10 mm; more preferably 6 to 9 mm.
The utility model discloses among the preferred embodiment of parts, the upper covering rubber includes natural rubber 1 ~ 18 parts by weight, butadiene styrene rubber 65 ~ 75 parts by weight, butadiene rubber 22 ~ 28 parts by weight, zinc oxide 4 ~ 5 parts by weight, stearic acid 0.1 ~ 2 parts by weight, promoter 1 ~ 2 parts by weight, anti-aging agent 2 ~ 3.5 parts by weight, paraffin 1 ~ 2 parts by weight, sulphur 1.5 ~ 2.5 parts by weight, antimony trioxide 1 ~ 2 parts by weight, chlorinated paraffin 3 ~ 5 parts by weight, solid flame retardant 50 ~ 85 parts by weight, fire-retardant lubricant 10 ~ 14 parts by weight, carbon black 35 ~ 43 parts by weight.
The utility model discloses select to glue as the main part that covers to glue by natural rubber, butylbenzene glue, cis-butadiene rubber constitution, solve and use the easy roller that glues of chloroprene rubber, scorch, the short scheduling process problem of latency. The formula greatly reduces harmful and smoke-generating materials such as halogen, antimony and the like, and the smoke quantity after combustion is low. The indexes of formula strength, wear resistance, flame retardance, bonding extraction and the like are far higher than the standard requirements. The formula cost is greatly reduced compared with that of a chloroprene rubber formula, and the economic benefit and the social benefit are obvious.
The utility model provides a fire-retardant transmission band, wherein, cover down and all adopt high bonding core glue to bond between glue film, aramid skeleton layer, buffer layer and the last glue film that covers.
The high bonding core glue is formed by the following components:
0-30 parts of natural rubber, 70-100 parts of styrene butadiene rubber, 5-8 parts of zinc oxide, 1-3 parts of light magnesium oxide, 0-2 parts of stearic acid, 1-2 parts of an accelerator, 2-4 parts of an anti-aging agent, 1.5-3 parts of sulfur, 5-7.5 parts of a binder, 7-12 parts of white carbon black, 1-3 parts of antimony trioxide, 3-6 parts of chlorinated paraffin, 50-70 parts of a solid flame retardant and 35-45 parts of carbon black.
The core rubber provided by the utility model comprises 0-30 parts by weight of natural rubber; preferably 5 to 28 parts by weight of natural rubber; more preferably, the rubber composition contains 10 to 20 parts by weight of natural rubber, and the source of the natural rubber is not limited and may be commercially available.
The natural rubber is natural polymer compounds containing polyisoprene as main component, and the molecular formula is (C)5H8) And n, wherein 91-94% of the components are rubber hydrocarbon (polyisoprene), and the balance is non-rubber substances such as protein, fatty acid, ash, saccharides and the like.
The core rubber provided by the utility model comprises 70-100 parts by weight of styrene butadiene rubber; preferably 72-95 parts by weight of styrene butadiene rubber; more preferably 75 to 90 parts by weight of styrene-butadiene rubber. The utility model discloses do not restrict its source, the market can.
The styrene butadiene rubber of the present invention is not limited, and those skilled in the art are familiar with the present invention. Styrene Butadiene Rubber (SBR), also known as polystyrene butadiene copolymer. The physical and mechanical properties, processing property and product use property are close to natural rubber, some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed are better than those of natural rubber, and the rubber is mainly used for manufacturing tires, conveyer belts, rubber tubes, adhesive sponge rubber, impregnated fibers and fabrics and can also be directly used as an adhesive and a coating. The preferred trade mark of butylbenzene rubber is 1502.
The core rubber provided by the utility model comprises 5-8 parts by weight of zinc oxide; preferably 5 to 7 parts by weight of zinc oxide; more preferably, 5 to 6 parts by weight of zinc oxide is included.
The zinc oxide of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The core rubber provided by the utility model comprises 1-3 parts by weight of light magnesium oxide; preferably, the magnesium oxide powder comprises 2-3 parts by weight of light magnesium oxide.
The core adhesive provided by the utility model comprises 0-2 parts by weight of stearic acid; preferably, the stearic acid is included in an amount of 0.5 to 1.5 parts by weight.
The core rubber provided by the utility model comprises 1-2 parts by weight of accelerator; preferably, the accelerator comprises 1.5-2 parts by weight.
The accelerator of the present invention is preferably selected from two or more of 2-mercaptobenzothiazole, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazolesulfenamide, N-oxydiethylene-2-benzothiazolesulfenamide and tetramethylthiuram disulfide.
The accelerator of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The core rubber provided by the utility model comprises 2-4 parts by weight of an anti-aging agent; preferably, the antioxidant comprises 2.3 to 3.5 parts by weight of antioxidant.
The anti-aging agent of the utility model is preferably selected from two or more than two of 2,2, 4-trimethyl-1, 2-dihydroquinoline, N-isopropyl-N' -phenyl-p-phenylenediamine and 9, 9-dimethylacridine. The antioxidant of the present invention is not limited, and those skilled in the art will be familiar with it. The utility model discloses do not restrict its source, the market can.
The core rubber provided by the utility model comprises 1.5-3 parts by weight of sulfur; preferably 1.8-2.8 parts by weight of sulfur; more preferably 1.8 to 2.5 parts by weight of sulfur.
The core adhesive provided by the utility model comprises 5-7.5 parts by weight of adhesive; preferably, the adhesive comprises 6.1-7.4 parts by weight of the adhesive.
The adhesive of the present invention is preferably selected from two or more of hexamethoxymethylmelamine, a precondensate of resorcinol and formaldehyde, maleic anhydride-complexed butadiene, and a modified melamine compound.
The core rubber provided by the utility model comprises 7-12 parts by weight of white carbon black; preferably 8-11 parts by weight of white carbon black; more preferably 8 to 10 parts by weight of white carbon black.
The preferred white carbon black is that the BET specific surface area is more than or equal to 200m2/g。
The core glue provided by the utility model comprises 1-3 parts by weight of antimony trioxide; preferably, the antimony trioxide is 1.5-3 parts by weight.
The core adhesive provided by the utility model comprises 3-6 parts by weight of chlorinated paraffin; preferably, the chlorinated paraffin comprises 4-6 parts by weight of chlorinated paraffin; more preferably, the chlorinated paraffin is contained in an amount of 4.5 to 6 parts by weight.
The core rubber provided by the utility model comprises 50-70 parts by weight of solid flame retardant; preferably, the flame retardant comprises 55-65 parts by weight of solid flame retardant.
The solid flame retardant of the utility model is preferably selected from two or more than two of superfine aluminum silicate, silicon flame retardant, ammonium polyphosphate, superfine aluminum hydroxide, intumescent flame retardant and zinc borate. More preferably, silicon-based flame retardants and intumescent flame retardants are included.
The core rubber provided by the utility model comprises 35-45 parts by weight of carbon black; preferably 35 to 43 parts by weight of carbon black; more preferably 37 to 40 parts by weight of carbon black.
The white carbon black has a BET specific surface area of more than or equal to 200m2/g。
The utility model discloses a high bonding flame retardant core glue is finally prepared to above-mentioned specific formula and proportion.
The utility model discloses select to glue through specific component complex core and cover and glue the formula and make cover glue intensity high, core glue adhesion strength high, halogen content low.
The thickness of the core rubber of the utility model is preferably 1.5-3.5 mm; more preferably 1.6 to 3.3 mm.
The thickness ratio of covering glue film, aramid fiber casing ply, buffer layer down and covering the glue film on is (5 ~ 10): (1.5-5): (0.5-1.5): (5-10).
The utility model discloses the structure specifically does in proper order: the lower covering glue layer-the core glue layer-the aramid fiber framework layer-the core glue layer-the buffer layer-the core glue layer-the upper covering glue layer.
The utility model relates to an slim energy-conserving fire-retardant conveyer belt, the structure includes casing ply, buffer layer, goes up the coating gum and glues down, goes up to cover and glues for the buffer layer between gluing and the casing ply, goes up to cover and glues and play at by high adhesion flame retardant core glue between gluing and buffer layer, casing ply and the lower coating gum, the utility model discloses well casing ply adopts the aramid fiber gumming straight warp straight weft canvas of high strength, and the conveyer belt intensity rank of production can reach 4000N/mm.
The utility model uses high-strength straight-warp straight-weft aramid fiber canvas as framework material to manufacture the conveyer belt, solves the problems that the steel wire rope core conveyer belt is easy to be longitudinally torn, has poor bending property, and the steel wire rope is easy to be wetted and rusted, thereby reducing the service life, and the like, and compared with the standard steel wire rope core conveyer belt with the same strength grade, the thickness of the belt body is reduced, and the dead weight is greatly reduced; and a formula of the low rolling resistance lower covering rubber is matched, so that the hysteresis loss tan delta of the rubber is reduced, the running resistance of the conveyer belt is reduced, the transportation energy consumption of the conveyer is effectively reduced, the running efficiency is improved, the service life is prolonged, the maintenance period is shortened, and the final purposes of energy conservation and environmental protection of conveyer belt products are realized.
The utility model provides a fire-retardant transmission bands, including fire-retardant transmission bands, including the low fire-retardant lower cover glue film that rolls of resistance, set up in the aramid fiber casing ply on the glue film of covering down, set up in the buffer layer on the aramid fiber casing ply, set up in the last cover glue film on the buffer layer, wherein, all adopt the high adhesive core glue to bond between lower cover glue film, aramid fiber casing ply is the straight latitude aramid fiber canvas of diameter, the utility model discloses a select straight latitude aramid fiber canvas of straight warp, than with the equal strength level standard wire rope core conveyer belt for the wire rope thickness attenuate, the unit weight reduces, can reduce the driving drum diameter, reduce motor drive power, the utility model discloses the structure includes casing ply, buffer layer, goes up cover glue and cover down and is the buffer layer between upper cover glue and the casing ply, the buffer layer can improve shock resistance, advances step protection casing ply, prolongs the life of casing ply, the utility model discloses fire-retardant cost uses the neoprene formula greatly reduced, economic benefits and social are obvious.
The utility model also provides a preparation method of fire-retardant conveyer belts, include:
A) mixing styrene-butadiene rubber, natural rubber and butadiene rubber, preheating for 40-60 s, adding zinc oxide, stearic acid, an accelerator, an anti-aging agent, paraffin, sulfur, antimony trioxide, chlorinated paraffin, a solid flame retardant and a flame-retardant lubricant, mixing for 50-80 s, adding carbon black, and discharging rubber at 130-140 ℃ to obtain sections of mixed covering rubber, preheating sections of mixed rubber, and mixing with a vulcanizing agent to obtain two sections of mixed covering rubber;
mixing and preheating natural rubber and butadiene rubber for 40-60 s, adding nano zinc oxide, stearic acid, an anti-aging agent, microcrystalline wax, sulfur, a silane coupling agent, white carbon black, a low-noise thermal auxiliary agent, nano aluminum silicate hydrate, aluminum hydroxide, antimony dioxide and a solid flame retardant, mixing for 50-80 s, then adding the carbon black, and discharging rubber at 130-140 ℃ to obtain -section mixed covering rubber, preheating -section mixed rubber, and mixing with a vulcanizing agent to obtain two-section mixed lower covering rubber;
mixing butadiene styrene rubber and natural rubber, preheating for 40-60 s, adding zinc oxide, light magnesium oxide, stearic acid, an accelerator, an anti-aging agent, sulfur, cobalt salt, an adhesive, white carbon black, antimony trioxide and chlorinated paraffin, mixing for 50-80 s, finally adding carbon black, and discharging rubber at 130-140 ℃ to obtain -section mixed core rubber;
B) calendering the two-stage mixing upper cover rubber, the two-stage mixing core rubber and the two-stage mixing lower cover rubber to obtain an upper cover rubber sheet, a lower cover rubber sheet and a core rubber sheet;
C) rubberizing the diameter straight weft aramid fiber canvas and the core rubber sheet; and then forming and vulcanizing the flame-retardant conveyor belt with the upper covering rubber sheet, the buffer layer and the lower covering rubber sheet to obtain the flame-retardant conveyor belt.
The utility model firstly plasticates and blends on rubber mixing equipment, and preferably adopts a two-section mixing method.
The utility model mixes and preheats the styrene butadiene rubber, the natural rubber and the butadiene rubber for 40 to 60 seconds; the preheating is preferably 40-60 s; more preferably 40s to 50 s.
Mix and preheat the concrete mode and do not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
After preheating, adding zinc oxide, stearic acid, an accelerator, an anti-aging agent, paraffin, sulfur, antimony trioxide, chlorinated paraffin, a solid flame retardant and a flame-retardant lubricant, mixing for 50-80 s,
the mixing temperature is preferably 130-140 ℃; the mixing time is preferably 50s to 70 s.
The concrete way that mix with does not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
And then adding carbon black, and discharging rubber at 130-140 ℃ to obtain sections of mixing covering rubber.
The specific manner of adding and removing glue of the present invention is not limited, and those skilled in the art are familiar with the present invention.
The temperature of binder removal is preferably 135 ~ 140 ℃ binder removal.
Preheating the rubber compound, and mixing with a vulcanizing agent to obtain two-section mixing cover rubber;
the preheating is preferably carried out in an internal mixing chamber, and the preheating time is 25-35 s, and more preferably 30 s. The temperature of the banburying chamber is 80-100 ℃. The specific manner of mixing and kneading is not limited in the present invention, and those skilled in the art will be familiar with the present invention.
The following is specifically to prepare the lower cover rubber:
the utility model firstly plasticates and blends on rubber mixing equipment, and preferably adopts a two-section mixing method.
The utility model first mixes and preheats the natural rubber and the butadiene rubber for 40 to 60 seconds; the preheating is preferably 40-60 s; more preferably 40s to 50 s.
Mix and preheat the concrete mode and do not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
After preheating, adding nano zinc oxide, stearic acid, an anti-aging agent, microcrystalline wax, sulfur, a silane coupling agent, white carbon black, a low-noise heat assistant, nano aluminum silicate hydrate, aluminum hydroxide, antimony dioxide and a solid flame retardant, mixing for 50-80 s,
the mixing temperature is preferably 130-140 ℃; the mixing time is preferably 50s to 70 s.
The concrete way that mix with does not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
And then adding carbon black, and discharging rubber at 130-140 ℃ to obtain sections of mixing covering rubber.
The specific manner of adding and removing glue of the present invention is not limited, and those skilled in the art are familiar with the present invention.
The temperature of binder removal is preferably 135 ~ 140 ℃ binder removal.
Preheating the rubber compound, and mixing with a vulcanizing agent to obtain two-section mixing cover rubber;
the preheating is preferably carried out in an internal mixing chamber, and the preheating time is 25-35 s, and more preferably 30 s. The temperature of the banburying chamber is 80-100 ℃. The specific manner of mixing and kneading is not limited in the present invention, and those skilled in the art will be familiar with the present invention.
The following concrete steps are used for preparing the core rubber:
firstly, mixing and preheating styrene butadiene rubber and natural rubber for 40-60 s; preferably 40s to 50 s. Mix and preheat the concrete mode and do not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
Adding zinc oxide, light magnesium oxide, stearic acid, an accelerator, an anti-aging agent, sulfur, cobalt salt, an adhesive, white carbon black, antimony trioxide and chlorinated paraffin, and mixing for 50-80 s.
The mixing temperature is preferably 130-140 ℃; the mixing time is preferably 50s to 70 s.
The concrete way that mix with does not prescribe a limit to, have clear description to the above-mentioned of concrete ratio, no longer describe here.
And finally adding carbon black, and discharging rubber at 130-140 ℃ to obtain sections of mixing core rubber.
The specific manner of adding and removing glue of the present invention is not limited, and those skilled in the art are familiar with the present invention. The temperature of binder removal is preferably 135 ~ 140 ℃ binder removal.
And preheating the -stage rubber compound, and mixing the rubber compound with a vulcanizing agent and a binder to obtain the two-stage mixing core rubber.
The preheating is preferably carried out in an internal mixing chamber for 25-35 s, and more preferably 30 s. The temperature of the banburying chamber is 80-100 ℃. The specific manner of mixing and kneading is not limited in the present invention, and those skilled in the art will be familiar with the present invention.
Calendering the two-stage mixing upper cover rubber, the two-stage mixing core rubber and the two-stage mixing lower cover rubber to obtain an upper cover rubber sheet, a lower cover rubber sheet and a core rubber sheet;
the specific operation of the calendering of the present invention is not limited, and those skilled in the art will be familiar with the present invention. And (3) rolling the covering rubber into a sheet, wherein the covering rubber is subjected to rough milling and fine milling by an open mill and then enters a rolling mill to be rolled into a covering rubber sheet with required thickness and width.
And (3) rolling the core rubber into a sheet, wherein the intermediate rubber is subjected to rough milling and fine milling by an open mill and then enters a rolling mill to be rolled into a core rubber sheet with required thickness and width.
Specifically, the calendering parameters of the two-stage mixing cover rubber are as follows: the upper roll temperature is 75-85 ℃, the middle roll temperature is 65-75 ℃, and the lower roll temperature is 40-50 ℃; the calendering parameters of the two-stage mixing core rubber are as follows: the upper roll temperature is 75-85 ℃, the middle roll temperature is 80-90 ℃, and the lower roll temperature is 50-60 ℃.
Rubberizing the diameter straight weft aramid fiber canvas and the core rubber sheet; and then forming and vulcanizing the flame-retardant conveyor belt with the upper covering rubber sheet, the buffer layer and the lower covering rubber sheet to obtain the flame-retardant conveyor belt.
The process is carried out by rough refining and fine refining for core rubber, calendering into middle rubber sheet with needed thickness and width, rubberizing with canvas, shaping rubberized canvas, upper covering rubber, buffer layer and lower covering rubber, heating and pressurizing for vulcanizing belt blank in vulcanizer at temperature, pressure and time to obtain the final product.
The utility model discloses to the rubberizing, the concrete parameter of shaping and vulcanization do not restrict, the skilled in the art is familiar with just.
The temperature of the rubberizing upper roller of the utility model is 75-85 ℃, the temperature of the middle roller is 80-90 ℃, and the temperature of the lower roller is 50-60 ℃; the vulcanization temperature is 145-150 ℃.
In order to improve the vulcanization efficiency and the vulcanization quality of the conveyer belt, the vulcanization temperature of the conveyer belt is preferably 145-150 ℃.
Fig. 1 is a schematic structural diagram of a conveyor belt according to technical solutions of the present invention, wherein 1 is an upper covering glue layer, 2 is a buffer layer, 3 is an aramid skeleton layer, 4 is a buffer layer, and 5 is a core glue layer.
In order to further the present invention, the following description will be made in detail with reference to the embodiments of the present invention.
Example 1
According to the utility model, the upper covering glue comprises the following components in parts by weight:
1. 10 parts of natural rubber, 60 parts of styrene-butadiene rubber, 30 parts of butadiene rubber, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of accelerator CZ, 1 parts of accelerator DM, 1 part of anti-aging agent 4010NA, 1.5 parts of anti-aging agent RD, 2 parts of paraffin, 2.8 parts of sulfur, 2.5 parts of antimony trioxide, 6 parts of chlorinated paraffin, 12 parts of superfine aluminum silicate F10012 parts, 28 parts of silicon flame retardant DIN-K, 8 parts of ammonium polyphosphate, 12 parts of superfine aluminum hydroxide, 10 parts of intumescent flame retardant IFR, 10 parts of MB-20210 parts, 40 parts of carbon black N22040 and 244.3 parts in total.
The formula of the high-adhesion flame-retardant core adhesive comprises the following specific components in parts by weight:
20 parts of natural rubber, 80 parts of styrene butadiene rubber, 5 parts of zinc oxide, 3 parts of light magnesium oxide, 1.2 parts of stearic acid, 1.2 parts of accelerator NOBS, 0.8 part of accelerator DM, 0.8 part of anti-aging agent 4010NA, 1.5 parts of anti-aging agent BLE, 2.5 parts of sulfur, 2.3 parts of cobalt salt, PM-183 parts, 10 parts of white carbon black, 3 parts of antimony trioxide, 6 parts of chlorinated paraffin, 6 parts of superfine aluminum silicate F10018 parts, 30 parts of silicon flame retardant DIN-K, 12 parts of superfine aluminum hydroxide, 10 parts of zinc borate, 22045 parts of carbon black N, and 255.3 parts in total.
The lower covering glue formula comprises the following specific components in parts by weight:
70 parts of natural rubber, 30 parts of butadiene rubber, 4 parts of nano zinc oxide, 1 part of stearic acid, 2 parts of sulfur, 3 parts of microcrystalline wax, 3 parts of an anti-aging agent, 2 parts of a silane coupling agent, 1 part of a low-heat-generation auxiliary agent, 13 parts of white carbon black, 13 parts of nano aluminum silicate hydrate, 13 parts of aluminum hydroxide, 6 parts of antimony trioxide, 35 parts of a solid flame retardant and N55040 parts of carbon black.
The preparation method comprises the following steps:
mixing butadiene styrene rubber, natural rubber and butadiene rubber, putting the mixture into an internal mixing chamber, preheating for 40-60 s, adding zinc oxide, stearic acid, an accelerator, an anti-aging agent, paraffin, sulfur, antimony trioxide, chlorinated paraffin, a solid flame retardant and a flame-retardant lubricant, mixing for 50-80 s, adding carbon black, discharging rubber at 130-140 ℃ to obtain -section mixed covering rubber, preheating -section mixed rubber, mixing with a vulcanizing agent to obtain two-section mixed covering rubber, and controlling the temperature of the internal mixing chamber to be below 100 ℃.
The method comprises the steps of putting natural rubber and butadiene rubber into an internal mixing chamber, mixing and preheating for 40-60 s, adding nano zinc oxide, stearic acid, an anti-aging agent, microcrystalline wax, sulfur, a silane coupling agent, white carbon black, a low-noise thermal assistant, nano aluminum silicate hydrate, aluminum hydroxide, antimony dioxide and a solid flame retardant, mixing for 50-80 s, adding carbon black, discharging at 130-140 ℃ to obtain -section mixed covering rubber, preheating -section mixed rubber, mixing with a vulcanizing agent to obtain two-section mixed covering rubber, and controlling the temperature of the internal mixing chamber to be below 100 ℃.
Mixing butadiene styrene rubber and natural rubber, preheating for 40-60 s, adding zinc oxide, light magnesium oxide, stearic acid, an accelerator, an anti-aging agent, sulfur, cobalt salt, an adhesive, white carbon black, antimony trioxide and chlorinated paraffin, mixing for 50-80 s, finally adding carbon black, and discharging rubber at 130-140 ℃ to obtain -section mixed core rubber;
after the upper/lower covering rubber is roughly and finely mixed by an open mill, the upper/lower covering rubber enters a calender to be calendered into a covering rubber sheet with required thickness and width. The technological parameters of the cover rubber and the pressing sheet are that the upper roller temperature is 80 ℃, the middle roller temperature is 70 ℃ and the lower roller temperature is 45 ℃.
And (3) rolling the core rubber into a sheet, wherein the core rubber is subjected to rough milling and fine milling by an open mill and then enters a rolling mill to be rolled into a core rubber sheet with required thickness and width.
Calendering the two-stage mixing upper cover rubber, the two-stage mixing core rubber and the two-stage mixing lower cover rubber to obtain an upper cover rubber sheet, a lower cover rubber sheet and a core rubber sheet;
rubberizing the diameter straight weft aramid fiber canvas and the core rubber sheet; when the adhesive is pasted, the upper roller temperature is 80 ℃, the middle roller temperature is 85 ℃ and the lower roller temperature is 55 ℃.
And forming the rubberized canvas, the upper covering glue, the buffer layer and the lower covering glue.
The belt blank is heated and pressed on a vulcanizing machine under constant temperature, pressure and time to be vulcanized into a finished conveyor belt with elastic performance, and the vulcanizing temperature of the conveyor belt is generally set at 145 ℃ in order to improve the vulcanizing efficiency and the vulcanizing quality of the conveyor belt.
The workshop conversion detection results of the prepared workshop conversion rubber material and the flame-retardant conveyor belt are shown in tables 1 and 2, wherein the table 1 is the workshop conversion rubber material detection result; table 2 shows the finished belt inspection report, and table 3 shows the data comparison between the DPP2000 aramid fiber belt and the ST/S2000 steel cord core belt.
TABLE 1 workshop conversion sizing material test results
Table 2: finished tape test report
TABLE 3 data comparison of DPP2000 aramid fiber conveyer belt and ST/S2000 steel wire rope core conveyer belt
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1, flame retardant conveyor belt, comprising:
covering a glue layer under the low rolling resistance flame retardant;
the aramid fiber framework layer is arranged on the lower covering glue layer; the aramid fiber framework layer has a strength grade of 500-4000N/mm; the aramid fiber framework layer is DPP (DPP-in-diameter) straight weft aramid fiber canvas;
the buffer layer is arranged on the aramid fiber framework layer;
an upper covering glue layer arranged on the buffer layer;
wherein the lower covering glue layer, the aramid fiber framework layer, the buffer layer and the upper covering glue layer are bonded by high-bonding core glue;
the aramid fiber framework layer is made of diameter straight weft aramid fiber canvas;
the thickness ratio of the lower covering glue layer to the aramid fiber framework layer to the buffer layer to the upper covering glue layer is (5-10): (1.5-5): (0.5-1.5): (5-10);
the thickness of the upper covering glue layer is 1.5-5 mm;
the thickness of the lower covering glue layer is 5-10 mm.
2. The flame-retardant conveying belt according to claim 1, wherein the thickness of the aramid framework layer is 1.5-5 mm.
3. The flame-retardant conveyor belt according to claim 1, wherein the thickness of the high-adhesion core rubber is 1.5-3.5 mm.
4. The conveyor belt of claim 1, wherein the buffer layer has a thickness of 0.5-1.5 mm.
5. The conveyor belt of claim 4, wherein the cushion layer is any selected from the group consisting of aramid mesh fabric, nylon impregnated canvas, polyester mesh fabric, and polyester impregnated canvas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574482.1U CN210001806U (en) | 2018-09-26 | 2018-09-26 | Flame-retardant conveying belt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574482.1U CN210001806U (en) | 2018-09-26 | 2018-09-26 | Flame-retardant conveying belt |
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| CN210001806U true CN210001806U (en) | 2020-01-31 |
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| CN201821574482.1U Active CN210001806U (en) | 2018-09-26 | 2018-09-26 | Flame-retardant conveying belt |
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| CN (1) | CN210001806U (en) |
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Effective date of registration: 20231011 Address after: 273500 No. 269, Jianshe Road, Tangcun Town, Zoucheng City, Jining City, Shandong Province Patentee after: Shandong xinbaolong Industrial Technology Co.,Ltd. Address before: 273522 Tangcun Town, Zoucheng City, Jining City, Shandong Province Patentee before: YANKUANG GROUP TANGCUN INDUSTRIAL Co.,Ltd. Patentee before: YANKUANG DONGHUA HEAVY INDUSTRY Co.,Ltd. |