CN114933746A - Low-smoke low-toxicity flame-retardant conveyor belt covering rubber and preparation method thereof - Google Patents
Low-smoke low-toxicity flame-retardant conveyor belt covering rubber and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 140
- 239000005060 rubber Substances 0.000 title claims abstract description 140
- 239000003063 flame retardant Substances 0.000 title claims abstract description 87
- 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 83
- 239000000779 smoke Substances 0.000 title claims abstract description 44
- 231100000053 low toxicity Toxicity 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 36
- 239000002270 dispersing agent Substances 0.000 claims abstract description 30
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011593 sulfur Substances 0.000 claims abstract description 27
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 27
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000004073 vulcanization Methods 0.000 claims abstract description 12
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 9
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 40
- 239000006229 carbon black Substances 0.000 claims description 33
- 150000001875 compounds Chemical class 0.000 claims description 32
- 238000007599 discharging Methods 0.000 claims description 24
- 239000005062 Polybutadiene Substances 0.000 claims description 20
- 235000021355 Stearic acid Nutrition 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 20
- 239000004200 microcrystalline wax Substances 0.000 claims description 20
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 20
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 20
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 20
- 229920002857 polybutadiene Polymers 0.000 claims description 20
- 239000008117 stearic acid Substances 0.000 claims description 20
- 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 claims description 20
- 239000011787 zinc oxide Substances 0.000 claims description 20
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 16
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 16
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 16
- -1 amine modified ammonium Chemical class 0.000 claims description 15
- 244000043261 Hevea brasiliensis Species 0.000 claims description 14
- 229920003052 natural elastomer Polymers 0.000 claims description 14
- 229920001194 natural rubber Polymers 0.000 claims description 14
- 229920002562 Polyethylene Glycol 3350 Polymers 0.000 claims description 12
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 12
- 238000003490 calendering Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 11
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 9
- 229920000877 Melamine resin Chemical class 0.000 claims description 6
- 229910001377 aluminum hypophosphite Inorganic materials 0.000 claims description 6
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical class NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 6
- 239000012190 activator Substances 0.000 claims description 4
- GLUUGHFHXGJENI-UHFFFAOYSA-N diethylenediamine Natural products C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 4
- 229920003049 isoprene rubber Polymers 0.000 claims description 4
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical class [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N monoethanolamine hydrochloride Natural products NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 229910001382 calcium hypophosphite Inorganic materials 0.000 claims description 2
- 229940064002 calcium hypophosphite Drugs 0.000 claims description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims description 2
- 235000011180 diphosphates Nutrition 0.000 claims description 2
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims description 2
- CNALVHVMBXLLIY-IUCAKERBSA-N tert-butyl n-[(3s,5s)-5-methylpiperidin-3-yl]carbamate Chemical compound C[C@@H]1CNC[C@@H](NC(=O)OC(C)(C)C)C1 CNALVHVMBXLLIY-IUCAKERBSA-N 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 36
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 16
- 239000000314 lubricant Substances 0.000 description 15
- 239000003963 antioxidant agent Substances 0.000 description 13
- 230000003078 antioxidant effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 235000014692 zinc oxide Nutrition 0.000 description 9
- 235000019241 carbon black Nutrition 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- XFZRQAZGUOTJCS-UHFFFAOYSA-N phosphoric acid;1,3,5-triazine-2,4,6-triamine Chemical compound OP(O)(O)=O.NC1=NC(N)=NC(N)=N1 XFZRQAZGUOTJCS-UHFFFAOYSA-N 0.000 description 2
- BPGLMKMMPBQINX-UHFFFAOYSA-N C(#N)N1C(=O)NC=2NC(=O)NC2C1=O.N1=C(N)N=C(N)N=C1N Chemical compound C(#N)N1C(=O)NC=2NC(=O)NC2C1=O.N1=C(N)N=C(N)N=C1N BPGLMKMMPBQINX-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 150000003254 radicals Chemical group 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a low-smoke low-toxicity flame-retardant conveyor belt cover rubber and a preparation method thereof, wherein the cover rubber comprises the following components in parts by weight: 100 parts of rubber, 30-60 parts of reinforcing filler, 4-8 parts of activating agent, 3-7 parts of anti-aging agent, 30-50 parts of flame retardant, 0.5-4.5 parts of dispersing agent, 0.5-3 parts of sulfur and 0.5-3 parts of vulcanization accelerator; the components are subjected to the steps of first-stage mixing, second-stage mixing, third-stage extrusion and vulcanization to obtain the low-smoke low-toxicity flame-retardant conveyor belt covering rubber. The invention comprehensively considers the aspects of tensile property, flame retardant property, environmental protection and the like, the selected formula system of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber can achieve good effect, simultaneously meets the environmental protection requirements of relevant countries, prolongs the service life of the conveyor belt, and realizes good economic benefit.
Description
Technical Field
The invention belongs to the technical field of conveyor belt covering rubber, and particularly relates to low-smoke low-toxicity flame-retardant conveyor belt covering rubber and a preparation method thereof.
Background
The rubber belongs to a combustible material, is subjected to thermal decomposition under the action of a heat source which is sufficient for thermal cracking inside or outside to generate a combustible product, can generate spontaneous combustion at a proper temperature, and is combusted according to a free radical chain reaction process, so that the heat is large, the temperature is high, and in addition, the carbon content of the material is high, and a large amount of black smoke is easily generated due to incomplete combustion; some rubbers produce toxic corrosive gases during combustion. Therefore, it is very important to develop a low-smoke low-toxicity flame-retardant conveyor belt.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the low-smoke low-toxicity flame-retardant conveyor belt cover rubber with good flame-retardant effect and small influence on physical and mechanical properties and the preparation method thereof.
According to the technical scheme provided by the invention, the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following components in parts by weight: 100 parts of rubber, 30-60 parts of reinforcing filler, 4-8 parts of activating agent, 3-7 parts of anti-aging agent, 30-50 parts of flame retardant, 0.5-4.5 parts of dispersing agent, 0.5-3 parts of sulfur and 0.5-3 parts of vulcanization accelerator; the components are subjected to the steps of first-stage mixing, second-stage mixing, third-stage extrusion and vulcanization to obtain the low-smoke low-toxicity flame-retardant conveyor belt covering rubber.
Preferably, the formula comprises the following components in parts by weight: 100 parts of rubber, 40-50 parts of reinforcing filler, 5-5.5 parts of activator, 5.5-6 parts of anti-aging agent, 30-40 parts of flame retardant, 0.5-4.5 parts of dispersant, 0.6-2.5 parts of sulfur and 1-2.7 parts of vulcanization accelerator.
Preferably, the rubber is one or more of silicon rubber, ethylene propylene rubber, styrene butadiene rubber, nitrile rubber, isoprene rubber, butadiene rubber, chloroprene rubber and natural rubber.
Preferably, the reinforcing filler is one or more of white carbon black, carbon black 115, carbon black 234 or carbon black 330.
Preferably, the activator is one or more of zinc oxide and stearic acid.
Preferably, the antioxidant is one or more of antioxidant RD, antioxidant 6PPD or microcrystalline wax.
Preferably, the flame retardant is any one of zinc borate, amine modified ammonium polyphosphate, hypophosphite, melamine and salt derivatives thereof; the amine modified ammonium polyphosphate is ethylenediamine modified ammonium polyphosphate, ethanolamine modified ammonium polyphosphate or piperazine modified ammonium polyphosphate; the hypophosphite is aluminum hypophosphite or calcium hypophosphite, and the melamine and the salt derivatives thereof are any of phosphate, pyrophosphate or cyanurate.
Preferably, the dispersing agent is one or more of dispersing agent FS-12 and dispersing agent PEG 3350.
Preferably, the vulcanization accelerator is one or more of an accelerator CZ and an accelerator DTDM.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt cover rubber comprises the following steps:
adding rubber into an internal mixer for banburying for 1-2 min; adding reinforcing filler, 4-8 parts of activating agent, anti-aging agent, flame retardant, dispersing agent, sulfur and accelerator into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 110 ℃ of 100 plus materials, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal temperature fan to obtain a section of rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur and vulcanization accelerator into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging pieces with the thickness of 8-12mm, and cooling by a normal-temperature fan to obtain second-stage rubber compound;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt covering rubber.
The invention comprehensively considers the aspects of tensile property, flame retardant property, environmental protection and the like, the selected formula system of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber can achieve good effect, simultaneously meets the environmental protection requirements of relevant countries, prolongs the service life of the conveyor belt, and realizes good economic benefit.
Detailed Description
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1
Taking the following raw materials in parts by weight as required:
25 parts of butadiene rubber, 35 parts of butadiene styrene rubber, 20 parts of chloroprene rubber, 20 parts of natural rubber, 0.6 part of sulfur, 1 part of accelerator CZ, 1 part of accelerator DTDM, 3 parts of zinc oxide, 2 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of anti-aging agent 6PPD, 2 parts of anti-aging agent RD, 40 parts of carbon black 115, 5 parts of antimony trioxide, 10 parts of melamine, 10 parts of zinc borate, 5 parts of flame-retardant lubricant MB202 and 0.5 part of dispersing agent FS-12.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: putting butadiene rubber, butadiene styrene rubber, chloroprene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black 115, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, melamine, zinc borate, a flame retardant MB202, a dispersing agent FS-12 into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 110 ℃ of 100 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt. The properties are shown in tables 1 to 3.
Example 2
Taking the following raw materials in parts by weight as required:
25 parts of butadiene rubber, 40 parts of butadiene styrene rubber, 25 parts of chloroprene rubber, 10 parts of natural rubber, 0.6 part of sulfur, 1 part of accelerator CZ, 1.1 part of accelerator DTDM, 3.5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of anti-aging agent 6PPD, 1 part of anti-aging agent RD, 5 parts of white carbon black, 35 parts of carbon black 115, 6 parts of antimony trioxide, 8 parts of melamine cyanuric hydrochloric acid, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 1.5 parts of dispersing agent FS-12.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: putting butadiene rubber, butadiene styrene rubber, chloroprene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black 115, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, melamine cyanurate hydrochloric acid, zinc borate, a flame-retardant lubricant MB202, a dispersing agent FS-12 into the top plug, banburying for 3-5min, controlling the glue discharging temperature at 100 ℃ and 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage mixed rubber, sulfur, a promoter CZ and a promoter DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ of 100-;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt. The properties are shown in tables 1 to 3.
Example 3
Taking the following raw materials in parts by weight as required:
30 parts of butadiene rubber, 30 parts of butadiene styrene rubber, 25 parts of chloroprene rubber, 15 parts of natural rubber, 0.6 part of sulfur, 1.1 parts of accelerator CZ, 1 part of accelerator DTDM, 3 parts of zinc oxide, 2 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of anti-aging agent 6PPD, 2 parts of anti-aging agent RD, 5 parts of white carbon black, 35 parts of carbon black 330, 4.5 parts of antimony trioxide, 10 parts of melamine phosphate, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 2 parts of dispersing agent FS-12.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: putting butadiene rubber, butadiene styrene rubber, chloroprene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, melamine phosphate, zinc borate, a flame-retardant lubricant MB202, a dispersing agent FS-12, banburying for 3-5min, controlling the rubber discharge temperature at 100 ℃ and 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt. The properties are shown in tables 1 to 3.
Example 4
Taking the following raw materials in parts by weight as required:
35 parts of butadiene rubber, 30 parts of butadiene styrene rubber, 35 parts of natural rubber, 2 parts of sulfur, 0.5 part of accelerator CZ, 1 part of accelerator DTDM, 3.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of antioxidant 6PPD, 2 parts of antioxidant RD, 6 parts of white carbon black, 42 parts of carbon black 115, 6.5 parts of antimony trioxide, 15 parts of ethylenediamine modified ammonium polyphosphate, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 4.5 parts of dispersant PEG 3350.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: adding butadiene rubber, butadiene styrene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, ethylenediamine modified ammonium polyphosphate, zinc borate, a flame-retardant lubricant MB202, a dispersant PEG3350 into the top plug, banburying for 3-5min, controlling the glue discharging temperature at 100 ℃ for 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixing rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant and flame-retardant conveying belt. The properties are shown in tables 1 to 3.
Example 5
Taking the following raw materials in parts by weight as required:
35 parts of butadiene rubber, 40 parts of butadiene styrene rubber, 25 parts of natural rubber, 2 parts of sulfur, 1 part of accelerator CZ, 1 part of accelerator DTDM, 4 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of antioxidant 6PPD, 2 parts of antioxidant RD, 3 parts of white carbon black, 50 parts of carbon black 115, 5.5 parts of antimony trioxide, 10 parts of ethanolamine-modified ammonium polyphosphate, 8 parts of zinc borate, 15 parts of flame-retardant lubricant MB202 and 4.5 parts of dispersant PEG 3350.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt cover rubber comprises the following steps of:
a mixing procedure: adding butadiene rubber, butadiene styrene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, ethanolamine modified ammonium polyphosphate, zinc borate, a flame-retardant lubricant MB202, a dispersant PEG3350 into the top plug, banburying for 3-5min, controlling the glue discharging temperature at 100 ℃ for 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to prepare a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixing rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant and flame-retardant conveying belt. The properties are shown in tables 1 to 3.
Example 6
Taking the following raw materials in parts by weight as required:
35 parts of butadiene rubber, 40 parts of butadiene styrene rubber, 25 parts of isoprene rubber, 2.5 parts of sulfur, 0.5 part of accelerator CZ, 0.5 part of accelerator DTDM, 4 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of microcrystalline wax, 2.5 parts of antioxidant 6PPD, 1 part of antioxidant RD, 5 parts of white carbon black, 40 parts of carbon black 234, 5 parts of antimony trioxide, 12 parts of piperazine modified ammonium polyphosphate, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 4.5 parts of dispersant PEG 3350.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: adding butadiene rubber, butadiene styrene rubber and isoprene rubber into an internal mixer for banburying for 1-2 min; adding 4.5 parts of carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, piperazine modified ammonium polyphosphate, zinc borate, a flame-retardant lubricant MB202 and a dispersing agent PEG3350 into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 110 ℃ of 100 plus materials, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to prepare a section of mixed rubber, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixing rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant and flame-retardant conveying belt. The properties are shown in tables 1 to 3.
Example 7
Taking the following raw materials in parts by weight as required:
25 parts of butadiene rubber, 60 parts of butadiene styrene rubber, 15 parts of chloroprene rubber, 1 part of sulfur, 1.2 parts of accelerator CZ, 1.2 parts of accelerator DTDM, 3.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of antioxidant 6PPD, 2 parts of antioxidant RD, 5 parts of white carbon black, 45 parts of carbon black 115, 5 parts of antimonous oxide, 13 parts of aluminum hypophosphite, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 4.5 parts of dispersant PEG 3350.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps in parts by weight:
a mixing procedure: putting the butadiene rubber, the butadiene styrene rubber and the chloroprene rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, aluminum hypophosphite, zinc borate, a flame-retardant lubricant MB202 and a dispersing agent PEG3350 into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 100 ℃ and 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage mixed rubber, sulfur, a promoter CZ and a promoter DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ of 100-;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixing rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant and flame-retardant conveying belt. The properties are shown in tables 1 to 3.
Example 8
Taking the following raw materials in parts by weight as required:
25 parts of butadiene rubber, 65 parts of butadiene styrene rubber, 10 parts of chloroprene rubber, 0.8 part of sulfur, 1.5 parts of accelerator CZ, 1 part of accelerator DTDM, 3.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of anti-aging agent 6PPD, 2 parts of anti-aging agent RD, 6 parts of white carbon black, 40 parts of carbon black 330, 4.5 parts of antimony trioxide, 10 parts of aluminum hypophosphite, 10 parts of zinc borate, 10 parts of flame-retardant lubricant MB202 and 4 parts of dispersant PEG 3350.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber comprises the following steps:
a mixing procedure: putting the butadiene rubber, the butadiene styrene rubber and the chloroprene rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, aluminum hypophosphite, zinc borate, a flame-retardant lubricant MB202 and a dispersing agent PEG3350 into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 100 ℃ and 110 ℃, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixing rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant and flame-retardant conveying belt. The properties are shown in tables 1 to 3.
Comparative example 1
Taking the following raw materials in parts by weight as required:
35 parts of butadiene rubber, 65 parts of natural rubber, 0.6 part of sulfur, 1.2 parts of accelerator CZ, 1.5 parts of accelerator DTDM, 3 parts of zinc oxide, 2 parts of stearic acid, 2 parts of microcrystalline wax, 2 parts of antioxidant 6PPD, 2 parts of antioxidant RD, 40 parts of carbon black 115, 5 parts of antimonous oxide, 5 parts of decabromodiphenyl ether, 10 parts of zinc borate, 30 parts of chlorinated paraffin and 2.5 parts of dispersant FS-12.
The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt cover rubber comprises the following steps in parts by weight:
a mixing procedure: adding butadiene rubber and natural rubber into an internal mixer for banburying for 1-2 min; adding carbon black, zinc oxide, stearic acid, microcrystalline wax, an anti-aging agent 6PPD, an anti-aging agent RD, antimony trioxide, decabromodiphenyl ether, zinc borate and chlorinated paraffin into the top plug, banburying for 3-5min, controlling the glue discharging temperature at 110 ℃ for 100 plus materials, turning, discharging sheets with the thickness of 8-12mm, cooling by a normal-temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur, an accelerant CZ and an accelerant DTDM into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging the rubber pieces with the thickness of 8-12mm and cooling by a normal-temperature fan to obtain the product super wear-resistant flame-retardant conveyor belt cover rubber;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt. The properties are shown in tables 1 to 3.
TABLE 1
TABLE 2
TABLE 3
As can be seen from tables 1-3, under the same flame retardant effect, the physical properties of the phosphorus-based and nitrogen-based environment-friendly flame retardants are superior to those of halogen-based flame retardants, and the phosphorus-nitrogen-based flame retardants can isolate thermal oxygen transfer and inhibit carbon oxidation process when being heated and decomposed, thereby reducing smoke content and having low content of emitted toxic gases.
Claims (10)
1. The utility model provides a fire-retardant conveyer belt cover of low cigarette low toxicity is glued, characterized by: the formula comprises the following components in parts by weight: 100 parts of rubber, 30-60 parts of reinforcing filler, 4-8 parts of activating agent, 3-7 parts of anti-aging agent, 30-50 parts of flame retardant, 0.5-4.5 parts of dispersing agent, 0.5-3 parts of sulfur and 0.5-3 parts of vulcanization accelerator; the components are subjected to the steps of first-stage mixing, second-stage mixing, third-stage extrusion and vulcanization to obtain the low-smoke low-toxicity flame-retardant conveyor belt covering rubber.
2. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the formula comprises the following components in parts by weight: 100 parts of rubber, 40-50 parts of reinforcing filler, 5-5.5 parts of activator, 5.5-6 parts of anti-aging agent, 30-40 parts of flame retardant, 0.5-4.5 parts of dispersant, 0.6-2.5 parts of sulfur and 1-2.7 parts of vulcanization accelerator.
3. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the rubber is one or more of silicon rubber, ethylene propylene rubber, styrene butadiene rubber, nitrile rubber, isoprene rubber, butadiene rubber, chloroprene rubber and natural rubber.
4. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the reinforcing filler is one or more of white carbon black, carbon black 115, carbon black 234 or carbon black 330.
5. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the activator is one or more of zinc oxide and stearic acid.
6. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the anti-aging agent is one or more of anti-aging agent RD, anti-aging agent 6PPD or microcrystalline wax.
7. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the flame retardant is any one of zinc borate, amine modified ammonium polyphosphate, hypophosphite, melamine and salt derivatives thereof; the amine modified ammonium polyphosphate is ethylenediamine modified ammonium polyphosphate, ethanolamine modified ammonium polyphosphate or piperazine modified ammonium polyphosphate; the hypophosphite is aluminum hypophosphite or calcium hypophosphite, and the melamine and salt derivatives thereof are any one of phosphate, pyrophosphate or cyanurate.
8. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the dispersing agent is one or more of dispersing agent FS-12 and dispersing agent PEG 3350.
9. The low-smoke low-toxicity flame-retardant conveyor belt covering rubber according to claim 1, which is characterized in that: the vulcanization accelerator is one or more of an accelerator CZ and an accelerator DTDM.
10. The preparation method of the low-smoke low-toxicity flame-retardant conveyor belt covering rubber of claim 1 is characterized by comprising the following steps of:
adding rubber into an internal mixer for banburying for 1-2 min; adding reinforcing filler, activating agent, anti-aging agent, flame retardant, dispersing agent, sulfur and accelerator into the top plug, banburying for 3-5min, controlling the rubber discharge temperature at 110 ℃ and turning, discharging sheets with the thickness of 8-12mm, cooling by a normal temperature fan to obtain a rubber compound, and standing for 6-10 h;
then, carrying out two-stage mixing, putting the prepared first-stage rubber compound, sulfur and vulcanization accelerator into an internal mixer, mixing for 3-4min, controlling the rubber discharge temperature at 110 ℃ and carrying out turnover mixing, discharging pieces with the thickness of 8-12mm, and cooling by a normal-temperature fan to obtain second-stage rubber compound;
extruding the two-stage rubber compound in a calender at the extrusion temperature of 90-100 ℃ and the calendering speed of 3-5 m/s to obtain a three-stage extruded rubber sheet;
and (3) after the three-section mixed rubber sheet is molded into a belt blank in a molding machine, vulcanizing by using a vulcanizing machine, controlling the vulcanizing temperature at 145-150 ℃, the vulcanizing time at 35-45 minutes and the vulcanizing pressure at 10-12MPa to obtain the low-smoke low-toxicity flame-retardant conveyor belt covering rubber.
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| CN115710391A (en) * | 2022-12-22 | 2023-02-24 | 安徽中意胶带有限责任公司 | Low rolling resistance and high wear resistance rubber composite material and preparation method thereof |
| CN115785541A (en) * | 2022-12-09 | 2023-03-14 | 无锡百年通工业输送有限公司 | High-wear-resistance conveyer belt covering rubber and preparation method thereof |
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