CN117801387A - Sidewall rubber of flame-retardant tire for underground coal mine and preparation method of sidewall rubber - Google Patents
Sidewall rubber of flame-retardant tire for underground coal mine and preparation method of sidewall rubber Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 68
- 239000005060 rubber Substances 0.000 title claims abstract description 68
- 239000003063 flame retardant Substances 0.000 title claims abstract description 38
- 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 33
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 34
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006229 carbon black Substances 0.000 claims abstract description 24
- 239000012188 paraffin wax Substances 0.000 claims abstract description 24
- 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 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 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 abstract description 15
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 14
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 13
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000013543 active substance Substances 0.000 claims abstract description 12
- 239000000839 emulsion Substances 0.000 claims abstract description 12
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 12
- 229920001194 natural rubber Polymers 0.000 claims abstract description 12
- 239000001993 wax Substances 0.000 claims abstract description 12
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims abstract description 6
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000004513 sizing Methods 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000008117 stearic acid Substances 0.000 claims description 11
- 229910052717 sulfur Inorganic materials 0.000 claims description 11
- 239000011593 sulfur Substances 0.000 claims description 11
- 239000010692 aromatic oil Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 6
- WUOBERCRSABHOT-UHFFFAOYSA-N diantimony Chemical compound [Sb]#[Sb] WUOBERCRSABHOT-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 239000003963 antioxidant agent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ODUCDPQEXGNKDN-UHFFFAOYSA-N nitroxyl Chemical compound O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The invention relates to the technical field of sidewall rubber, in particular to sidewall rubber of an underground coal mine flame-retardant tire, which is prepared from the following raw materials in parts by mass: 20-50 parts of natural rubber, 20-40 parts of emulsion polymerized styrene-butadiene rubber, 30-50 parts of butadiene rubber, 0-15 parts of MCSM rubber, 2-10 parts of active agent zinc oxide, 30-60 parts of high wear-resistant carbon black N, 0-15 parts of white carbon black, 1-2 parts of anti-aging agent TMQ, 1-3 parts of anti-aging agent 6PPD, 0.5-2.5 parts of protective wax, 1-3 parts of dispersing agent FS-97, 0.6-2 parts of accelerator CZ, 0.1-0.4 part of scorch retarder, 2-5 parts of chlorinated paraffin, 10-35 parts of decabromodiphenyl ether, 5-15 parts of antimonous oxide, 0-15 parts of zinc borate and the like. The preparation method comprises the steps of raw material weighing, primary masterbatch mixing, further masterbatch mixing and final masterbatch mixing. According to the invention, through optimizing and adjusting a raw rubber system and an overall formula and combining flame retardant materials for matching application, the sidewall rubber oxygen index can be improved to more than 22%.
Description
Technical Field
The invention relates to the technical field of sidewall rubber, in particular to sidewall rubber of an underground coal mine flame-retardant tire.
Background
The main component of the side wall rubber of the all-steel mine engineering is a mixture of polyisoprene and butadiene rubber, and compared with the butadiene rubber, the isoprene rubber has high activity and is easier to react with acid and age. Meanwhile, main antioxidants in the conventional sidewall formula are ketoamine and p-phenylenediamine antioxidants, the antioxidants belong to alkaline antioxidants, and are easy to combine with acid to lose the anti-aging effect, so that the aging of the tire is accelerated, and one Chinese patent of the invention with the publication number of CN107841002A relates to engineering tire sidewall rubber suitable for an acid mining area and a preparation method thereof, and belongs to the technical field of tire formulas. Firstly, sequentially adding styrene-butadiene rubber, chloroprene rubber, butadiene rubber, carbon black, white carbon black, an anti-aging agent and nano MgO into an internal mixer for masterbatch, then continuously adding sulfur, an accelerator, znO and an anti-scorching agent CTP, and continuously mixing rubber to obtain the engineering tire sidewall rubber suitable for an acid mining area. The invention obviously improves the corrosion resistance of the side rubber material by adopting a chloroprene rubber with excellent corrosion resistance and adopting an anti-aging system insensitive to acid on the basis of ensuring the good processing performance of the rubber material, obviously prolongs the service life of the side of the engineering of the acid mining area, and improves the quality of the tire.
However, the above-mentioned prior art neglects the fire-retardant importance of sidewall position, and traditional sidewall rubber's oxygen index is lower (less than 18%), belongs to inflammable material, and when using the tire of above-mentioned sidewall rubber, can produce the threat to the safe operation in the pit, exists great potential safety hazard.
Disclosure of Invention
The invention aims to provide a sidewall rubber of an underground coal mine flame-retardant tire, which aims to provide a sidewall rubber of an underground coal mine flame-retardant tire, wherein the sidewall rubber has an oxygen index of more than 22%, has excellent flame-retardant performance, and simultaneously meets the performances of ozone aging resistance, flex crack resistance and the like required in the use process of the tire.
The invention discloses a sidewall rubber of an underground coal mine flame-retardant tire, which is prepared from the following raw materials in parts by mass: 20-50 parts of natural rubber, 20-40 parts of emulsion polymerized styrene-butadiene rubber, 30-50 parts of butadiene rubber, 0-15 parts of MCSM rubber, 2-10 parts of active agent zinc oxide, 30-60 parts of high wear-resistant carbon black N, 0-15 parts of white carbon black, 1-2 parts of anti-aging agent TMQ, 1-3 parts of anti-aging agent 6PPD, 1-3 parts of stearic acid, 0.5-2.5 parts of protective wax, 0.5-2 parts of paraffin wax, 2-6 parts of tackifying resin, 3-10 parts of aromatic oil, 1-3 parts of dispersing agent FS-97, 1-2.5 parts of sulfur, 0.6-2 parts of accelerator CZ, 0.1-0.4 part of scorch retarder, 2-5 parts of chlorinated paraffin wax, 10-35 parts of decabromodiphenyl ether, 5-15 parts of antimonous oxide and 0-15 parts of zinc borate.
Further, the composite material comprises the following raw materials in parts by mass: 25-45 parts of natural rubber, 25-40 parts of emulsion polymerized styrene-butadiene rubber, 30-45 parts of butadiene rubber, 0-15 parts of MCSM rubber, 3-8 parts of active agent zinc oxide, 330-55 parts of high wear-resistant carbon black N, 5-15 parts of white carbon black, 1.5-2 parts of anti-aging agent TMQ, 1.5-3 parts of anti-aging agent 6PPD, 2-3 parts of stearic acid, 1-2.5 parts of protective wax, 1-2 parts of paraffin wax, 2-5 parts of tackifying resin, 4-10 parts of aromatic oil, 2-3 parts of dispersing agent FS-97, 1-2 parts of sulfur, 0.6-1.5 parts of promoter CZ, 0.1-0.3 part of scorch retarder, 2-4 parts of chlorinated paraffin wax, 10-30 parts of decabromodiphenyl ether, 5-15 parts of antimonous oxide and 5-15 parts of zinc borate.
Further, the composite material comprises the following raw materials in parts by mass: 30-40 parts of natural rubber, 25-35 parts of emulsion polymerized styrene-butadiene rubber, 30-40 parts of butadiene rubber, 5-15 parts of MCSM rubber, 4-6 parts of active agent zinc oxide, 40-55 parts of high wear-resistant carbon black N, 5-10 parts of white carbon black, 1.5-2 parts of anti-aging agent TMQ, 1.5-2.5 parts of anti-aging agent 6PPD, 2-3 parts of stearic acid, 1.5-2.5 parts of protective wax, 1-2 parts of paraffin wax, 2-4 parts of tackifying resin, 5-8 parts of aromatic oil, 2-3 parts of dispersing agent FS-97, 1.2-1.7 parts of sulfur, 0.6-1.2 parts of accelerator CZ, 0.2-0.3 part of scorch retarder, 2-4 parts of chlorinated paraffin wax, 15-30 parts of decabromodiphenyl ether, 6-12 parts of diantimony trioxide and 8-15 parts of zinc borate.
Further, the ratio of parts of butadiene rubber to parts of MCSM rubber is between 3:1 and 4:1.
Further, the ratio of the parts of decabromodiphenyl ether to the parts of antimony trioxide is between 2:1 and 3:1.
Further, the ratio of the part of decabromodiphenyl ether to the part of zinc borate is between 2:1 and 2.5:1.
Further, the preparation method of the sidewall rubber of the flame-retardant tire for the underground coal mine comprises the following steps:
s1, weighing raw materials, and weighing the raw materials in proportion according to parts by mass;
s2, mixing the primary masterbatch, adopting a meshed internal mixer, adding the weighed natural rubber, emulsion styrene-butadiene rubber, MCSM rubber, active agent zinc oxide, stearic acid, an anti-aging agent TMQ, an anti-aging agent 6PPD, protective wax, paraffin and tackifying resin into the meshed internal mixer, starting the meshed internal mixer to mix for 30-50 seconds, adding the weighed carbon black and white carbon black according to the weight parts, continuing mixing for 90-110 seconds, adding aromatic oil, mixing for 140-160 seconds, lifting the bolt after mixing, and discharging after pressing the bolt for 200-220 seconds to obtain the sizing material 1;
s3, further mixing the master batch, setting the rotating speed of the meshed internal mixer to be 35-50 pr/min, adding the oil pressure of the upper ram to be 13.0-16.0 MPa, adding the sizing material 1 into the meshed internal mixer, starting the meshed internal mixer to mix, adding decabromodiphenyl ether, chlorinated paraffin, antimony trioxide and zinc borate after mixing for 30-50 seconds, continuing mixing for 80-100 seconds, lifting the ram after mixing is finished, and discharging after pressing the ram to be 120-140 seconds to obtain sizing material 2;
s4, mixing the final rubber, setting the rotating speed of the meshed internal mixer to be 15-25 pr/min, adding the oil pressure of the upper ram to be 12.0-15.0 MPa, sequentially adding the rubber material 2, sulfur, the accelerator and the scorch retarder into the meshed internal mixer, mixing for 40-60 seconds, lifting the ram, and discharging after pressing the ram for 100-120 seconds to obtain the final rubber material.
Compared with the prior art ， The invention has the main advantages and beneficial effects that:
(1) The oxygen index of the side rubber can be obviously improved and the flame retardant property of the side rubber can be improved by using a plurality of flame retardants with a certain proportion, such as antimony trioxide, decabromodiphenyl ether, zinc borate and chlorinated paraffin, and the chlorinated paraffin not only can play the roles of the flame retardants, the adhesive, the cementing agent and the filler, but also has the moisture resistance and the chemical corrosion resistance; the antimony trioxide belongs to an additive flame retardant, and can generate synergistic effect with other flame retardants. In the initial stage of combustion, antimony trioxide is first melted, a protective film is formed on the surface of the material to isolate air, and the combustion temperature is reduced through internal endothermic reaction. The antimonous oxide is gasified in a high temperature state, so that the oxygen concentration in the air is diluted, and the flame retardant effect is achieved; the melting point of the decabromodiphenyl ether is more than 300 ℃, the decabromodiphenyl ether is non-corrosive, is insoluble in solvents such as water, ethanol, acetone, benzene and the like, is slightly soluble in chlorinated aromatic hydrocarbon, has good stability, has obvious synergistic effect when the decabromodiphenyl ether and the antimonous oxide are used together, and has higher flame retardant efficiency and good thermal stability; the zinc borate is mainly used as an inorganic additive and a nontoxic flame retardant, can be used as a multifunctional synergistic additive of antimony oxide or other halogen flame retardants, can effectively improve flame retardant performance, reduce the generation of smoke during combustion, and can adjust the performances of rubber and plastic products in chemical, mechanical, electric and other aspects.
(2) The ozone aging resistance and flex crack resistance of the formula are improved through optimizing a raw rubber system, so that the use requirement of a tire is met, and the raw rubber system comprises natural rubber, emulsion polymerized styrene-butadiene rubber, MCSM rubber, active agent zinc oxide, stearic acid, an anti-aging agent TMQ, an anti-aging agent 6PPD, protective wax, paraffin and tackifying resin;
(3) Through the optimization and adjustment of a raw rubber system and an overall formula and the combination of flame retardant materials, the sidewall rubber oxygen index can be improved to more than 22%; the tire using the rubber material can prolong the service life of the tire under an underground coal mine, can avoid various safety accidents caused by the combustion of the tire, and has excellent market value and popularization prospect.
Drawings
FIG. 1 is a flow chart of the preparation of a sidewall rubber of an flame retardant tire for an underground coal mine;
FIG. 2 is a table of the formulation of the sidewall rubber of the flame retardant tire for an underground coal mine;
FIG. 3 is a table comparing physical properties of the produced vulcanizate of this invention and the prior art.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
The formulation table of the sidewall rubber of the flame-retardant tire for the underground coal mine provided by the embodiment comprises the following raw materials in parts by mass: 20-50 parts of natural rubber, 20-40 parts of emulsion polymerized styrene-butadiene rubber, 30-50 parts of butadiene rubber, 0-15 parts of MCSM rubber, 2-10 parts of active agent zinc oxide, 2-60 parts of high wear-resistant carbon black N330, 0-15 parts of white carbon black, 1-2 parts of anti-aging agent TMQ, 1-3 parts of anti-aging agent 6PPD, 1-3 parts of stearic acid, 0.5-2.5 parts of protective wax, 0.5-2 parts of paraffin wax, 2-6 parts of tackifying resin, 3-10 parts of aromatic oil, 1-3 parts of dispersing agent FS-97, 1-2.5 parts of sulfur, 0.6-2 parts of promoter CZ, 0.1-0.4 part of scorch retarder, 2-5 parts of chlorinated paraffin wax, 10-35 parts of decabromodiphenyl ether, 5-15 parts of antimony trioxide, 0-15 parts of zinc borate, the ratio of cis-polybutadiene rubber to MCSM rubber is 3:1-4:1, the ratio of decabromodiphenyl ether to 3:1 is 2:1-2.4:1, and the ratio of decabromodiphenyl ether to 2.1:2.
And four groups of comparison formulas are obtained according to the raw material proportion by adopting different weight parts, namely a comparison formula 1, a comparison formula 2, a comparison formula 3 and a comparison formula 4, wherein the specific weight parts of the comparison formula 1, the comparison formula 2, the comparison formula 3 and the comparison formula 4 are shown in figure 2. The raw materials used in the prior art and the weight parts commonly used are also listed in FIG. 2.
The four groups of comparison formulas are respectively produced by sizing materials according to the flow of the preparation method shown in figure 1, and the preparation method specifically comprises the following steps:
s1, weighing raw materials, and weighing the raw materials according to the weight parts;
s2, mixing the primary masterbatch, adopting a meshed internal mixer, adding the weighed natural rubber, emulsion styrene-butadiene rubber, MCSM rubber, active agent zinc oxide, stearic acid, an anti-aging agent TMQ, an anti-aging agent 6PPD, protective wax, paraffin and tackifying resin into the meshed internal mixer, starting the meshed internal mixer to mix for 30-50 seconds, adding the weighed carbon black and white carbon black according to the weight parts, continuing mixing for 90-110 seconds, adding aromatic oil, mixing for 140-160 seconds, lifting the bolt after mixing, and discharging after pressing the bolt for 200-220 seconds to obtain the sizing material 1;
s3, further mixing the master batch, setting the rotating speed of the meshed internal mixer to be 35-50 pr/min, adding the oil pressure of the upper ram to be 13.0-16.0 MPa, adding the sizing material 1 into the meshed internal mixer, starting the meshed internal mixer to mix, adding decabromodiphenyl ether, chlorinated paraffin, antimony trioxide and zinc borate after mixing for 30-50 seconds, continuing mixing for 80-100 seconds, lifting the ram after mixing is finished, and discharging after pressing the ram to be 120-140 seconds to obtain sizing material 2;
s4, mixing the final rubber, setting the rotating speed of the meshed internal mixer to be 15-25 pr/min, adding the oil pressure of the upper ram to be 12.0-15.0 MPa, sequentially adding the rubber material 2, sulfur, the accelerator and the scorch retarder into the meshed internal mixer, mixing for 40-60 seconds, lifting the ram, and discharging after pressing the ram for 100-120 seconds to obtain the final rubber material.
And the four groups of sizing materials obtained and the sizing materials adopted in the prior art are subjected to vulcanization conditions: physical properties were tested after 60min at 143 ℃, and flame retardant properties were tested according to the oxygen index test specified for GB/T10707-2008 and the flame retardant test specified for MT 113-1995; the flex crack performance test was based on the flex crack test specified for GB/T13934-2006.
The obtained physical property test comparison table is shown in fig. 3, and compared with the prior art formula, the oxygen index of the comparison formula 1-4 reaches more than 22%, which indicates that the comparison formula cannot be naturally combusted in the air, and the flame and flameless combustion time of the comparison formula 1-4 is smaller than that of the prior art formula, and indicates that the flame retardant property is better than that of the prior art formula, wherein the oxygen index of the comparison formula 4 reaches more than 26%, which is close to the flame retardant level, and the flame and flameless combustion time of the alcohol burner is smaller than 1s, and the flame retardant property is excellent.
In conclusion, the whole formula and the preparation method provided by the implementation optimize and adjust a raw rubber system and the whole formula, and the sidewall rubber oxygen index can be improved to more than 22% by combining flame retardant materials for matching application; the tire using the rubber material can prolong the service life of the tire under an underground coal mine, can avoid various safety accidents caused by the combustion of the tire, and has excellent market value and popularization prospect.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The sidewall rubber of the flame-retardant tire for the underground coal mine is characterized by comprising the following raw materials in parts by mass: 20-50 parts of natural rubber, 20-40 parts of emulsion polymerized styrene-butadiene rubber, 30-50 parts of butadiene rubber, 0-15 parts of MCSM rubber, 2-10 parts of active agent zinc oxide, 30-60 parts of high wear-resistant carbon black N, 0-15 parts of white carbon black, 1-2 parts of anti-aging agent TMQ, 1-3 parts of anti-aging agent 6PPD, 1-3 parts of stearic acid, 0.5-2.5 parts of protective wax, 0.5-2 parts of paraffin wax, 2-6 parts of tackifying resin, 3-10 parts of aromatic oil, 1-3 parts of dispersing agent FS-97, 1-2.5 parts of sulfur, 0.6-2 parts of accelerator CZ, 0.1-0.4 part of scorch retarder, 2-5 parts of chlorinated paraffin wax, 10-35 parts of decabromodiphenyl ether, 5-15 parts of antimonous oxide and 0-15 parts of zinc borate.
2. The sidewall rubber of the flame-retardant tire for the underground coal mine, as claimed in claim 1, is characterized by comprising the following raw materials in parts by mass: 25-45 parts of natural rubber, 25-40 parts of emulsion polymerized styrene-butadiene rubber, 30-45 parts of butadiene rubber, 0-15 parts of MCSM rubber, 3-8 parts of active agent zinc oxide, 330-55 parts of high wear-resistant carbon black N, 5-15 parts of white carbon black, 1.5-2 parts of anti-aging agent TMQ, 1.5-3 parts of anti-aging agent 6PPD, 2-3 parts of stearic acid, 1-2.5 parts of protective wax, 1-2 parts of paraffin wax, 2-5 parts of tackifying resin, 4-10 parts of aromatic oil, 2-3 parts of dispersing agent FS-97, 1-2 parts of sulfur, 0.6-1.5 parts of promoter CZ, 0.1-0.3 part of scorch retarder, 2-4 parts of chlorinated paraffin wax, 10-30 parts of decabromodiphenyl ether, 5-15 parts of antimonous oxide and 5-15 parts of zinc borate.
3. The sidewall rubber of the flame-retardant tire for the underground coal mine is characterized by comprising the following raw materials in parts by mass: 30-40 parts of natural rubber, 25-35 parts of emulsion polymerized styrene-butadiene rubber, 30-40 parts of butadiene rubber, 5-15 parts of MCSM rubber, 4-6 parts of active agent zinc oxide, 40-55 parts of high wear-resistant carbon black N, 5-10 parts of white carbon black, 1.5-2 parts of anti-aging agent TMQ, 1.5-2.5 parts of anti-aging agent 6PPD, 2-3 parts of stearic acid, 1.5-2.5 parts of protective wax, 1-2 parts of paraffin wax, 2-4 parts of tackifying resin, 5-8 parts of aromatic oil, 2-3 parts of dispersing agent FS-97, 1.2-1.7 parts of sulfur, 0.6-1.2 parts of accelerator CZ, 0.2-0.3 part of scorch retarder, 2-4 parts of chlorinated paraffin wax, 15-30 parts of decabromodiphenyl ether, 6-12 parts of diantimony trioxide and 8-15 parts of zinc borate.
4. A side wall rubber for an industrial coal mine flame retardant tire according to claim 3, wherein the ratio of parts butadiene rubber to parts MCSM rubber is between 3:1 and 4:1.
5. A sidewall rubber for an industrial coal mine flame retardant tire as in claim 4, wherein the ratio of parts of decabromodiphenyl ether to parts of antimony trioxide is between 2:1 and 3:1.
6. A sidewall rubber for an industrial coal mine flame retardant tire as in claim 5, wherein the ratio of parts decabromodiphenyl oxide to parts zinc borate is between 2:1 and 2.5:1.
7. The preparation method of the sidewall rubber of the flame-retardant tire for the underground coal mine is characterized by comprising the following steps of:
s1, weighing raw materials, wherein the raw materials are weighed according to the mass parts of the raw materials in the claim 6;
s2, mixing the primary masterbatch, adopting a meshed internal mixer, adding the weighed natural rubber, emulsion styrene-butadiene rubber, MCSM rubber, active agent zinc oxide, stearic acid, an anti-aging agent TMQ, an anti-aging agent 6PPD, protective wax, paraffin and tackifying resin into the meshed internal mixer, starting the meshed internal mixer to mix for 30-50 seconds, adding the weighed carbon black and white carbon black according to the weight parts, continuing mixing for 90-110 seconds, adding aromatic oil, mixing for 140-160 seconds, lifting the bolt after mixing, and discharging after pressing the bolt for 200-220 seconds to obtain the sizing material 1;
s3, further mixing the master batch, setting the rotating speed of the meshed internal mixer to be 35-50 pr/min, adding the oil pressure of the upper ram to be 13.0-16.0 MPa, adding the sizing material 1 into the meshed internal mixer, starting the meshed internal mixer to mix, adding decabromodiphenyl ether, chlorinated paraffin, antimony trioxide and zinc borate after mixing for 30-50 seconds, continuing mixing for 80-100 seconds, lifting the ram after mixing is finished, and discharging after pressing the ram to be 120-140 seconds to obtain sizing material 2;
s4, mixing the final rubber, setting the rotating speed of the meshed internal mixer to be 15-25 pr/min, adding the oil pressure of the upper ram to be 12.0-15.0 MPa, sequentially adding the rubber material 2, sulfur, the accelerator and the scorch retarder into the meshed internal mixer, mixing for 40-60 seconds, lifting the ram, and discharging after pressing the ram for 100-120 seconds to obtain the final rubber material.
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| CN202311847550.2A CN117801387A (en) | 2023-12-29 | 2023-12-29 | Sidewall rubber of flame-retardant tire for underground coal mine and preparation method of sidewall rubber |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190177516A1 (en) * | 2017-12-11 | 2019-06-13 | Shandong Linglong Tire Co., Ltd. | Composite Materials of Tire Sidewall Rubber and Preparation Method thereof |
| CN111234328A (en) * | 2020-03-09 | 2020-06-05 | 泰凯英(青岛)专用轮胎技术研究开发有限公司 | Fireproof flame-retardant tread rubber composition for giant engineering radial tire and preparation method thereof |
| CN116178803A (en) * | 2022-12-26 | 2023-05-30 | 中策橡胶集团股份有限公司 | High flame-retardant tire sidewall rubber composition, mixing method and high flame-retardant tire |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190177516A1 (en) * | 2017-12-11 | 2019-06-13 | Shandong Linglong Tire Co., Ltd. | Composite Materials of Tire Sidewall Rubber and Preparation Method thereof |
| CN111234328A (en) * | 2020-03-09 | 2020-06-05 | 泰凯英(青岛)专用轮胎技术研究开发有限公司 | Fireproof flame-retardant tread rubber composition for giant engineering radial tire and preparation method thereof |
| CN116178803A (en) * | 2022-12-26 | 2023-05-30 | 中策橡胶集团股份有限公司 | High flame-retardant tire sidewall rubber composition, mixing method and high flame-retardant tire |
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