CN102745460A - High-temperature-resisting conveying belt of steel wire rope - Google Patents
High-temperature-resisting conveying belt of steel wire rope Download PDFInfo
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- CN102745460A CN102745460A CN2012102379653A CN201210237965A CN102745460A CN 102745460 A CN102745460 A CN 102745460A CN 2012102379653 A CN2012102379653 A CN 2012102379653A CN 201210237965 A CN201210237965 A CN 201210237965A CN 102745460 A CN102745460 A CN 102745460A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 28
- 239000005060 rubber Substances 0.000 claims abstract description 25
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 6
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000006229 carbon black Substances 0.000 claims abstract description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000008117 stearic acid Substances 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- 229920002681 hypalon Polymers 0.000 claims abstract description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 3
- 229920006235 chlorinated polyethylene elastomer Polymers 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 40
- 239000001828 Gelatine Substances 0.000 claims description 14
- 229920000159 gelatin Polymers 0.000 claims description 14
- 235000019322 gelatine Nutrition 0.000 claims description 14
- 230000032683 aging Effects 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 229920001021 polysulfide Polymers 0.000 claims description 5
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 4
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 3
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 3
- 229960002447 thiram Drugs 0.000 claims description 3
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 claims description 3
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 1
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- -1 ethylene dimethyl acrylate ester Chemical class 0.000 abstract 1
- 239000006235 reinforcing carbon black Substances 0.000 abstract 1
- 238000003490 calendering Methods 0.000 description 4
- 235000019241 carbon black Nutrition 0.000 description 4
- 238000005056 compaction Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
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- Ropes Or Cables (AREA)
- Belt Conveyors (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a high-temperature-resisting conveying belt of a steel wire rope and solves the problem that the conveying belt of the existing steel wire rope core can not resist high temperature. According to the high-temperature-resisting conveying belt of the steel wire rope, the formula of rubber materials of upper and lower covered rubber layers comprises the following components in parts by weight: 70-80 parts of ethylene propylene diene monomer, 20-30 parts of chlorosulfonated polyethylene rubber or chlorinated polyethylene rubber or acrylate rubber, 6-8 parts of dicumyl peroxide, 0.5-1.5 parts of sulfur, 10-15 parts of zinc oxide, 1-3 parts of ethylene dimethyl acrylate ester, 1-2 parts of stearic acid, 2-8 parts of an accelerating agent, 2-4 parts of an anti-ageing agent, 15-25 parts of paraffin oil, 20-30 parts of high-wear-resisting carbon black, 30-50 parts of semi-reinforcing carbon black and 10-15 parts of active glass fiber powder. A glass fiber canvas heat-insulating layer is arranged between a middle rubber layer and an upper covered rubber layer, and a glass fiber canvas heat-insulating layer is arranged between the middle rubber layer and a lower covered rubber layer. The high-temperature-resisting conveying belt of the steel wire rope can be used under an environment of 250 DEG C for long time and the conveying requirements of some special high-temperature materials are met.
Description
Technical field
The present invention relates to a kind of high temperature-resistance conveyor belt, specifically a kind of cable wire core high-temperature-resisting conveying belt that has fibrous glass canvas thermal insulation layer.
Background technology
Cable wire core high-temperature-resisting conveying belt is mainly used in industries such as metallurgy, building materials, chemical industry, is used for carrying high-temperature materials such as sintered ore, pelletizing ore, cement clinker, lime, coke, chemical fertilizer.The cable wire core high-temperature-resisting conveying belt of prior art is made up of steel rope, middle glue and upper and lower rubber cover, and its advantage is that load-carrying capacity is big, fed distance is long, tensile deformation is little, and shortcoming is that resistance to elevated temperatures is poor, and service life is short.When serviceability temperature surpassed 150 ℃, sharply descended service life.Its major cause one is that rubber cover bubbles, chaps, hardens, becomes fragile under the condition of high temperature, the 2nd, and the cement properties of steel rope and middle glue sharply descends.Because the high-temperature material of industries such as present metallurgy, building materials is all more than 200 ℃, even above 300 ℃ or higher, therefore, the cable wire core high-temperature-resisting conveying belt of prior art can not satisfy the requirement that the high-temperature material safety economy is carried.
Summary of the invention
In order to improve the serviceability temperature and the life-span of existing cable wire core high-temperature-resisting conveying belt, the invention provides a kind of cable wire core high-temperature-resisting conveying belt, can long-term use under-250 ℃ of environment, satisfy the transport requirement of some special high-temperature materials.
The technical scheme that the present invention takes is: comprise Steel cord, intermediate gelatine layer, go up covering glue layer, covering glue layer down, it is characterized in that describedly go up covering glue layer, covering glue layer is resistant to elevated temperatures polysulphide rubbers down, sizing compound formula is by weight:
Ethylene propylene diene rubber 70-80 part, chlorosulfonated polyethylene rubber or chlorinated polyethylene rubber or ACM 20-30 part, cumyl peroxide 6-8 part, Sulfur 0.5-1.5 part; Zinc oxide 10-15 part, dimethacrylate ethyl 1-3 part, stearic acid 1-2 part; Accelerator 2-8 part, aging inhibitor 2-4 part, paraffin oil 15-25 part; High wear-resistant carbon black 20-30 part, semi-reinforcing hydrocarbon black 30-50 part, activity glass fiber powder 10-15 part.
In the prescription of above-mentioned sizing material, accelerator can be selected dibenzothiazyl disulfide, diethyldithio-carbamate zinc, zinc dibutyl dithiocarbamate, 2-benzothiazolyl mercaptan, tetramethylthiuram disulfide or its combination for use; Aging inhibitor can select 2,2 for use, 4-trimethyl-1,2-dihyaroquinoline, N-PBNA or its combination.
For realizing high-temperature resistant result better, between described intermediate gelatine layer and the last covering glue layer and between intermediate gelatine layer and the following covering glue layer layer of glass canvas thermal insulation layer is being set respectively.
At first through plasticate, mixing, upper and lower rubber cover, middle glue film are processed in calendering or fibrous glass is wiped the rubberizing canvas; Through the flat board of colding pressing upper and lower rubber cover, intermediate film, steel rope or fibrous glass are wiped rubberizing canvas cold isostatic compaction together then, at last logical vulcanizing press sulfidization molding under permanent tension state.
Advantage of the present invention and beneficial effect are: 1, described upper and lower covering glue layer has higher resistance to elevated temperatures, guarantee non-foaming under 250 ℃ of conditions of high temperature, do not chap, do not harden, do not become fragile, can long-term use.2, because at upper and lower rubber cover and contain between the middle glue of Steel cord and respectively laid layer of glass canvas thermal insulation layer; Because of fibrous glass has heat resisting temperature height, advantage that heat-proof quality is good; Thereby the heat that has stoped high-temperature material effectively is to middle glue and wire rope transfers; Guaranteed that the bonding strength between the steel rope and middle glue does not descend when carrying the high temperature material; Thereby solved problems such as of the prior artly coming unstuck, bubble, cross thermal ageing effectively, the heat resisting temperature and the service life of having improved load-transfer device.
Description of drawings
Accompanying drawing is a cross-sectional structure scheme drawing of the present invention.
1 is Steel cord among the figure, the 2nd, and intermediate gelatine layer, the 3rd, fibrous glass canvas thermal insulation layer, the 4th, last covering glue layer, the 5th, following covering glue layer.
The specific embodiment
Embodiment 1
Cable wire core high-temperature-resisting conveying belt of the present invention comprises Steel cord 1, intermediate gelatine layer 2, last covering glue layer 4, following covering glue layer 5, wherein:
Described upward covering glue layer 4, following covering glue layer 5 are resistant to elevated temperatures polysulphide rubberss, and sizing compound formula is by weight: 70 parts of ethylene propylene diene rubbers, 30 parts of chlorosulfonated polyethylene rubbers, 6 parts of cumyl peroxides; 1 part of Sulfur, 10 parts in zinc oxide, 2 parts of dimethacrylate ethyls, 2 parts of stearic acid; 2 parts of accelerator dibenzothiazyl disulfides, 2 parts of accelerant disulfide tetra methylthiurams, aging inhibitor 2,2; 4-trimethyl-1,2-dihyaroquinoline, 2 parts, 2 parts of aging inhibitor N-PBNAs; 15 parts of paraffin oils, 30 parts of high wear-resistant carbon blacks, 30 parts of semi-reinforcing hydrocarbon blacks, 10 parts in activity glass fiber powder.
At first through plasticate, mixing, calendering processes upper and lower rubber cover, middle glue film; Process is colded pressing flat board with upper and lower rubber cover, intermediate film, steel rope by the schematic structure cold isostatic compaction together then, at last logical vulcanizing press sulfidization molding under permanent tension state.
Cable wire core high-temperature-resisting conveying belt of the present invention comprises Steel cord 1, intermediate gelatine layer 2, last covering glue layer 4, following covering glue layer 5, wherein:
Described upward covering glue layer 4, following covering glue layer 5 are resistant to elevated temperatures polysulphide rubberss, and sizing compound formula is by weight: 80 parts of ethylene propylene diene rubbers, 20 parts of chlorosulfonated polyethylene rubbers, 7 parts of cumyl peroxides; 1 part of Sulfur, 12 parts in zinc oxide, 2 parts of dimethacrylate ethyls, 2 parts of stearic acid; 1.5 parts of accelerator 2-benzothiazolyl mercaptans, 2 parts on accelerator diethyldithio-carbamate zinc, 1 part of accelerant zinc dibutyl dithiocaarbamate, aging inhibitor 2; 2,4-trimethyl-1,2-dihyaroquinoline, 2 parts; 20 parts of paraffin oils, 25 parts of high wear-resistant carbon blacks, 40 parts of semi-reinforcing hydrocarbon blacks, 12 parts in activity glass fiber powder.
Between described intermediate gelatine layer 2 and the last covering glue layer 4 and between intermediate gelatine layer 2 and the following covering glue layer 5 layer of glass canvas thermal insulation layer 3 is being set respectively.
At first through plasticate, mixing, upper and lower rubber cover, middle glue film are processed in calendering and fibrous glass is wiped the rubberizing canvas; Through the flat board of colding pressing upper and lower rubber cover, fibrous glass are wiped rubberizing canvas, intermediate film, steel rope by the schematic structure cold isostatic compaction together then, at last logical vulcanizing press sulfidization molding under permanent tension state.
Cable wire core high-temperature-resisting conveying belt of the present invention comprises Steel cord 1, intermediate gelatine layer 2, last covering glue layer 4, following covering glue layer 5, wherein:
Described upward covering glue layer 4, following covering glue layer 5 are resistant to elevated temperatures polysulphide rubberss, and sizing compound formula is by weight: 75 parts of ethylene propylene diene rubbers, 25 parts of ACMs, 7.5 parts of cumyl peroxides; 0.5 part of Sulfur, 11 parts in zinc oxide, 2 parts of dimethacrylate ethyls, 2 parts of stearic acid; 1 part of accelerator dibenzothiazyl disulfide, 2 parts of zinc dibutyl dithiocarbamates, 2 parts of 2-benzothiazolyl mercaptans; 1 part of tetramethylthiuram disulfide, aging inhibitor 2,2; 4-trimethyl-1,1 part of 2-dihyaroquinoline, 1 part of aging inhibitor N-PBNA.20 parts of paraffin oils, 30 parts of high wear-resistant carbon blacks, 35 parts of semi-reinforcing hydrocarbon blacks, 12 parts in activity glass fiber powder.
Between described intermediate gelatine layer 2 and the last covering glue layer 4 and between intermediate gelatine layer 2 and the following covering glue layer 5 layer of glass canvas thermal insulation layer 3 is being set respectively.
At first through plasticate, mixing, upper and lower rubber cover, middle glue film are processed in calendering and fibrous glass is wiped the rubberizing canvas; Through the flat board of colding pressing upper and lower rubber cover, fibrous glass are wiped rubberizing canvas, intermediate film, steel rope by the schematic structure cold isostatic compaction together then, at last logical vulcanizing press sulfidization molding under permanent tension state.
Embodiment 4
Testing result sees the following form:
Claims (4)
1. cable wire core high-temperature-resisting conveying belt comprises Steel cord, intermediate gelatine layer, goes up covering glue layer, covering glue layer down, it is characterized in that, describedly goes up covering glue layer (4), covering glue layer (5) is resistant to elevated temperatures polysulphide rubbers down, and sizing compound formula is by weight:
Ethylene propylene diene rubber 70-80 part, chlorosulfonated polyethylene rubber or chlorinated polyethylene rubber or ACM 20-30 part, cumyl peroxide 6-8 part, Sulfur 0.5-1.5 part; Zinc oxide 10-15 part, dimethacrylate ethyl 1-3 part, stearic acid 1-2 part; Accelerator 2-8 part, aging inhibitor 2-4 part, paraffin oil 15-25 part; High wear-resistant carbon black 20-30 part, semi-reinforcing hydrocarbon black 30-50 part, activity glass fiber powder 10-15 part.
2. cable wire core high-temperature-resisting conveying belt according to claim 1 is characterized in that: between described intermediate gelatine layer (2) and the last covering glue layer (4) and between intermediate gelatine layer (2) and the following covering glue layer (5) layer of glass canvas thermal insulation layer (3) is being set respectively.
3. cable wire core high-temperature-resisting conveying belt according to claim 1 is characterized in that: described accelerator can be selected dibenzothiazyl disulfide, diethyldithio-carbamate zinc, zinc dibutyl dithiocarbamate, 2-benzothiazolyl mercaptan, tetramethylthiuram disulfide or its combination for use.
4. cable wire core high-temperature-resisting conveying belt according to claim 1 is characterized in that: described aging inhibitor can select 2,2 for use, 4-trimethyl-1,2-dihyaroquinoline, N-PBNA or its combination.
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103242566A (en) * | 2013-05-21 | 2013-08-14 | 江苏福莱欧工业制带有限公司 | Flame retardant conveyor belt |
CN103724837A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | High-strength rubber sealing ring containing glass fiber |
CN103910942A (en) * | 2013-08-05 | 2014-07-09 | 安徽欧耐橡塑工业有限公司 | Surface covering rubber of high-temperature-resistant strong-acid/alkali-resistant laminated conveyer belt and preparation method thereof |
CN104194163A (en) * | 2014-08-22 | 2014-12-10 | 河北建强科技有限公司 | EPDM-ENB rubber compound, preparation method and device thereof |
CN104312019A (en) * | 2014-11-14 | 2015-01-28 | 无锡宝通带业股份有限公司 | Glass fiber high-heat-resistant conveying belt covering rubber and preparation method thereof |
CN104387675A (en) * | 2014-10-22 | 2015-03-04 | 柳州市颖航汽配有限公司 | Preparation method for rubber for automobile exhaust pipe lifting ring |
CN108912509A (en) * | 2018-07-19 | 2018-11-30 | 尚晴 | A kind of preparation method of high abrasion corrosion proof cable material |
CN109679177A (en) * | 2019-02-20 | 2019-04-26 | 青岛富耐特矿业科技有限公司 | Wire-mesh core damping rubber blanket peculiar to vessel and preparation method thereof |
CN110023070A (en) * | 2016-12-09 | 2019-07-16 | 康蒂泰克传送带系统有限公司 | Anti-sticking easy release conveyer belt |
CN110757857A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Manufacturing method of high-temperature-resistant aramid fiber conveying belt |
CN112721360A (en) * | 2020-12-31 | 2021-04-30 | 浙江双箭橡胶股份有限公司 | High-temperature-resistant conveying belt and preparation method thereof |
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CN103242566A (en) * | 2013-05-21 | 2013-08-14 | 江苏福莱欧工业制带有限公司 | Flame retardant conveyor belt |
CN103910942A (en) * | 2013-08-05 | 2014-07-09 | 安徽欧耐橡塑工业有限公司 | Surface covering rubber of high-temperature-resistant strong-acid/alkali-resistant laminated conveyer belt and preparation method thereof |
CN103724837A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | High-strength rubber sealing ring containing glass fiber |
CN104194163A (en) * | 2014-08-22 | 2014-12-10 | 河北建强科技有限公司 | EPDM-ENB rubber compound, preparation method and device thereof |
CN104387675A (en) * | 2014-10-22 | 2015-03-04 | 柳州市颖航汽配有限公司 | Preparation method for rubber for automobile exhaust pipe lifting ring |
CN104312019A (en) * | 2014-11-14 | 2015-01-28 | 无锡宝通带业股份有限公司 | Glass fiber high-heat-resistant conveying belt covering rubber and preparation method thereof |
CN110023070A (en) * | 2016-12-09 | 2019-07-16 | 康蒂泰克传送带系统有限公司 | Anti-sticking easy release conveyer belt |
CN110023070B (en) * | 2016-12-09 | 2021-09-14 | 康蒂泰克传送带系统有限公司 | Anti-sticking easy-release conveyor belt |
CN108912509A (en) * | 2018-07-19 | 2018-11-30 | 尚晴 | A kind of preparation method of high abrasion corrosion proof cable material |
CN109679177A (en) * | 2019-02-20 | 2019-04-26 | 青岛富耐特矿业科技有限公司 | Wire-mesh core damping rubber blanket peculiar to vessel and preparation method thereof |
CN110757857A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Manufacturing method of high-temperature-resistant aramid fiber conveying belt |
CN110757857B (en) * | 2019-11-20 | 2022-04-05 | 浙江双箭橡胶股份有限公司 | Manufacturing method of high-temperature-resistant aramid fiber conveying belt |
CN112721360A (en) * | 2020-12-31 | 2021-04-30 | 浙江双箭橡胶股份有限公司 | High-temperature-resistant conveying belt and preparation method thereof |
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CN102745460B (en) | 2014-09-17 |
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Denomination of invention: A steel wire rope core high-temperature resistant conveyor belt Granted publication date: 20140917 Pledgee: China Co. truction Bank Corp Huaibei branch Pledgor: ANHUI ZHONGYI RUBBER BELTS Co.,Ltd. Registration number: Y2024980007855 |