CN114539681A - High-wear-resistance ethylene propylene diene monomer covering rubber for high-temperature-resistant conveying belt and preparation method thereof - Google Patents
High-wear-resistance ethylene propylene diene monomer covering rubber for high-temperature-resistant conveying belt and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 47
- 229920002943 EPDM rubber Polymers 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 40
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006229 carbon black Substances 0.000 claims abstract description 20
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 20
- 239000011593 sulfur Substances 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 20
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000008117 stearic acid Substances 0.000 claims abstract description 17
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 abstract description 18
- 230000032683 aging Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 14
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000032798 delamination Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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)
- Belt Conveyors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt and a preparation method thereof, and belongs to the field of heat-resistant conveying belts. Comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer, 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of accelerator, 1-3 parts of sulfur, 1.5-3 parts of anti-aging agent and 0.5-2 parts of wear-resistant auxiliary agent; meanwhile, the invention also provides a preparation method of the composition. By adopting the technical scheme, the covering adhesive obtained by optimizing the formula has excellent high-temperature wear resistance besides high-temperature thermal oxidation aging resistance. The cracking and delamination of the covering rubber caused by thermal oxidation aging and mechanical abrasion in the process of conveying high-temperature materials by the conveying belt are avoided, and the service life of the conveying belt is prolonged.
Description
Technical Field
The invention relates to the technical field of heat-resistant conveyor belt materials, in particular to high-wear-resistant Ethylene Propylene Diene Monomer (EPDM) covering rubber for a high-temperature-resistant conveyor belt and a preparation method thereof.
Background
The heat-resistant conveyer belt is prepared by combining and vulcanizing a plurality of layers of rubber and a belt core. The covering glue layer is arranged on the upper surface and the lower surface of the conveyer belt, and is exposed in the air and directly contacted with high-temperature materials for a long time during operation, so that the thermal oxidation aging degradation of the covering glue is accelerated, and the covering glue is cracked and delaminated. In addition, the wear resistance of the covering layer is directly related to the service life of the heat-resistant conveying belt.
The patent CN109749153B provides a cold-resistant and heat-resistant conveying belt, and researches the aging performance at 70 ℃ for 168h to obtain the heat-resistant temperatures of 163 ℃ and 165 ℃;
patent CN106117822A provides a heat-resistant conveyor belt covering rubber containing high-efficiency zinc 4060 complex, and physical properties at room temperature are studied: the tensile strength is 14.4MPa, the elongation at break is 628 percent, and the abrasion is 110mm 3; thermal aging resistance (175 ℃ C.. times.96 h): the tensile strength is 14.2MPa, and the elongation at break is 590 percent; meets the detection requirement of T4 grade (the test temperature is 175 ℃) in GB/T20021-;
patent CN113166507A prepared a rubber composition for conveyor belts, and evaluated the wear resistance of the rubber compound: DIN abrasion of 160mm3 or less is evaluated as excellent abrasion resistance; the wear resistance is evaluated to be more excellent when the DIN abrasion is less than or equal to 150mm 3; DIN abrasion > 160mm3 was evaluated as poor abrasion resistance. The DIN abrasion resistance of the prepared rubber material is in the range of 141mm 3-149 mm3, and the evaluation is better.
The performances of the rubber material of the covering rubber provided by the patent need to be improved in the aspects of thermo-oxidative aging temperature, aging resistance time, wear resistance and the like. Meanwhile, with the rapid development of industries such as coal, coking, metallurgy, cement and the like, the technical innovation requirement on the heat-resistant conveying belt in the industry is higher and higher, and GB/T20021-.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt and a preparation method thereof.
The invention is realized by the following technical scheme: a high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer, 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of accelerator, 1-3 parts of sulfur, 1.5-3 parts of anti-aging agent and 0.5-2 parts of wear-resistant auxiliary agent.
Preferably, the carbon black is at least one of N330, N550, N660, and N774.
Preferably, the zinc oxide is precipitated zinc oxide.
Preferably, the stearic acid has a moisture content of 0.2% or less.
Preferably, the accelerator is at least one of DM, CZ and TT.
Preferably, the sulfur is insoluble sulfur.
Preferably, the anti-aging agent is at least one of MB, RD and 4010 NA.
Preferably, the wear-resistant auxiliary agent is at least one of SI-A, SI-H.
A preparation method of high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt is characterized by comprising the following steps:
s1, mixing: putting the raw rubber into an internal mixer for plasticating for 2min, sequentially adding 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid and 1-3 parts of an accelerator according to a proportion, driving an upper ram press to provide mixing pressure for an internal mixing chamber, and carrying out internal mixing for 3min to obtain uniformly mixed masterbatch;
and (S2) two-stage mixing: and (3) remilling the masterbatch obtained by one-section mixing on an open mill, adding sulfur, performing thin pass triangular bag making for 6 times, and adjusting the roller distance to obtain the high-wear-resistant ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt.
As a preferred scheme, the temperature of the internal mixer is 50-60 ℃, and the rotating speed is 30-40 r/min.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt provided by the invention still meets the T4 grade index of the heat-resistant conveying belt in GB/T20021-plus 2017 canvas core heat-resistant conveying belt on the premise that the heat-resistant oxygen aging time is prolonged to 168h, namely, the hardness, the tensile elongation and the tensile strength of the covering rubber are changed within the allowable change range at the test temperature of the heat resistance of not more than 180 ℃. The service life of the high-temperature resistant conveying belt is prolonged;
(2) the high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt provided by the invention has excellent room-temperature wear resistance and wear resistance after thermal oxidation aging: normal temperature DIN abrasion as low as 70mm3DIN abrasion after aging at 180 ℃ for 168h is as low as 120mm3The abrasion resistance of the rubber material is superior to that of the rubber material in patent CN 113166507A;
(3) the performance of the heat-resistant covering adhesive is optimized and innovated without changing the traditional process, and the manufacturing process is simple, safe and environment-friendly.
By adopting the technical scheme, the covering adhesive obtained by optimizing the formula has excellent high-temperature wear resistance besides high-temperature thermal oxidation aging resistance. The cracking and delamination of the covering rubber caused by thermal oxidation aging and mechanical abrasion in the process of conveying high-temperature materials by the conveying belt are avoided, and the service life of the conveying belt is prolonged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The invention provides a high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt, which comprises the following components in parts by weight: 100 parts of ethylene propylene diene monomer;
30-60 parts of carbon black, wherein the carbon black is at least one of N330, N550, N660 and N774;
3-10 parts of zinc oxide, wherein the zinc oxide is zinc oxide obtained by a precipitation method, so that the vulcanization speed of the rubber material can be increased, the crosslinking density of the rubber material can be increased, and the hardness, the tensile strength and the wear resistance of the rubber material can be effectively improved;
1-2 parts of stearic acid, wherein the water content of the stearic acid is less than or equal to 0.2%;
1-3 parts of a promoter, wherein the promoter is at least one of DM, CZ and TT;
1-3 parts of sulfur, wherein the sulfur is insoluble sulfur;
1.5-3 parts of an anti-aging agent, wherein the anti-aging agent is at least one of MB, RD and 4010 NA;
0.5-2 parts of wear-resistant additive, wherein the wear-resistant additive is at least one of SI-A, SI-H. The rubber wear-resistant auxiliaries SI-A and SI-H are two novel rubber wear-resistant agents on the market, have bifunctional group polysulfur organosilane coupling agents, are better in compatibility with rubber, and greatly improve the wear resistance of rubber materials.
A preparation method of high-wear-resistance ethylene propylene diene monomer covering rubber for a high-temperature-resistant conveying belt specifically comprises the following steps:
s1, mixing: putting the raw rubber into an internal mixer for plasticating for 2min, sequentially adding 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid and 1-3 parts of an accelerator according to a proportion, driving an upper ram press to provide mixing pressure for an internal mixing chamber, carrying out internal mixing for 3min at the temperature of 50-60 ℃ and the rotating speed of 30-40r/min to obtain uniformly mixed master batch;
s2 two-stage mixing: and (3) remilling the masterbatch obtained by one-section mixing on an open mill, adding sulfur, performing thin pass triangular bag making for 6 times, and adjusting the roller distance to obtain the high-wear-resistant ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
Example 1
100 parts of ethylene propylene diene monomer, 20 parts of carbon black N33020, 20 parts of carbon black N550, 3 parts of zinc oxide, 1 part of stearic acid, 1.2 parts of accelerator DM, 1 part of accelerator CZ, 1.5 parts of sulfur, 1 part of anti-aging agent 4010NA, 2 parts of anti-aging agent RD, 1 part of wear-resistant auxiliary agent SI-A and 1 part of SI-H.
Example 2
100 parts of ethylene propylene diene monomer, 20 parts of carbon black N33020, 66030 parts of carbon black N, 3 parts of zinc oxide, 1 part of stearic acid, 1.2 parts of accelerator DM, 1 part of accelerator CZ, 1.5 parts of sulfur, 1 part of anti-aging agent 4010NA, 2 parts of anti-aging agent RD, 1 part of wear-resistant auxiliary agent SI-A and 2 parts of SI-H.
Example 3
100 parts of ethylene propylene diene monomer, 30 parts of carbon black N33030, 66030 parts of carbon black N, 3 parts of zinc oxide, 2 parts of stearic acid, 1.2 parts of accelerator DM, 2 parts of accelerator TT, 2 parts of sulfur, 1 part of anti-aging agent 4010NA, 2 parts of anti-aging agent RD, 1.5 parts of wear-resistant auxiliary agent SI-A and 1.5 parts of SI-H.
The above-mentioned embodiments 1 to 3 have the same preparation process, and are implemented according to a preparation method of the high wear-resistant ethylene propylene diene monomer covering rubber for the high temperature resistant conveyor belt, and the preparation method comprises the following steps: first-stage mixing: and (2) putting the raw rubber into an internal mixer for plastication for 2min at the temperature of 50-60 ℃ and the rotating speed of 30-40r/min, sequentially adding carbon black, zinc oxide, stearic acid, an accelerator and a wear-resistant auxiliary agent according to a proportion, driving an upper ram press to provide mixing pressure for an internal mixing chamber, and internally mixing for 3min to obtain the master batch which is uniformly mixed. And (3) second-stage mixing: and (3) remilling the masterbatch obtained by the first-stage mixing on an open mill, adding sulfur, performing thin pass and triangular wrapping for 6 times, and adjusting the roller distance for blanking to obtain the high-wear-resistant ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt.
Comparative example 1
100 parts of ethylene propylene diene monomer, 40 parts of carbon black N330, 2 parts of zinc oxide, 1 part of stearic acid, 1.2 parts of accelerator DM, 1 part of accelerator CZ, 1 part of sulfur, 1 part of anti-aging agent 4010NA and 2 parts of anti-aging agent RD.
Comparative example 2
100 parts of ethylene propylene diene monomer, 40 parts of carbon black N330, 2 parts of zinc oxide, 1 part of stearic acid, 1.2 parts of accelerator DM, 2 parts of accelerator CZ, 1.5 parts of sulfur, 1 part of antioxidant 4010NA and 2 parts of antioxidant RD.
The above comparative examples 1-2, which have the same mixing process, comprise the following steps: putting the raw ethylene-propylene-diene monomer rubber into an open mill, plasticating for 2min, sequentially adding zinc oxide, stearic acid, an accelerator, carbon black and an anti-aging agent, mixing for 3min until the mixture is uniformly dispersed, finally adding sulfur, mixing uniformly, thinly passing for 5 times, and discharging to obtain the ethylene-propylene-diene monomer rubber covering rubber with the common formula.
And (4) performance testing:
according to the requirement of GB/T33510 in GB/T20021-.
According to GB/T9867-.
The physical property test results of the compounds of examples 1-3 and comparative examples 1-2 are shown in Table 1, and the aging properties are shown in Table 2.
TABLE 1 physical Properties of the capstocks
TABLE 2 thermo-oxidative aging Properties of overlay adhesives
The data from the above two tables are now summarized as follows:
1. the detection data performance of the three embodiments of the invention reaches and exceeds the requirement of T4 grade in GB/T20021-2017 canvas core heat-resistant conveying belt; comparative examples 1-2 have poor test data after aging and do not meet the requirements of the national standard, as shown in Table 3 below.
TABLE 3 summary of test properties for examples and comparative examples
2. The wear-resisting data at room temperature and the wear-resisting data after thermo-oxidative aging of the embodiments 1 to 3 are both less than or equal to 150mm3The abrasion resistance evaluation index specified in patent CN113166507A is surpassed: DIN abrasion less than or equal to 160mm3Excellent wear resistance was evaluated; DIN abrasion less than or equal to 150mm3The abrasion resistance was evaluated to be more excellent; DIN abrasion > 160mm3The abrasion resistance was evaluated to be poor.
In conclusion, the high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt and the preparation method thereof provided by the invention have the advantages that the excellent high-temperature-resistant thermal-oxidative aging resistance and the excellent wear resistance are both considered, the service life of the high-temperature-resistant conveying belt is prolonged, the manufacturing process is simple and environment-friendly, the technology of the high-temperature-resistant conveying belt in China is promoted to be upgraded, and the import cost is reduced.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt is characterized by comprising the following components in parts by weight: 100 parts of ethylene propylene diene monomer, 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of accelerator, 1-3 parts of sulfur, 1.5-3 parts of anti-aging agent and 0.5-2 parts of wear-resistant auxiliary agent.
2. The ethylene propylene diene monomer rubber according to claim 1, wherein the carbon black is at least one of N330, N550, N660 and N774.
3. The high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt according to claim 1, wherein the zinc oxide is precipitated zinc oxide.
4. The high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt as claimed in claim 1, wherein the moisture content of stearic acid is less than or equal to 0.2%.
5. The high wear-resistant ethylene propylene diene monomer rubber for the high-temperature-resistant conveying belt according to claim 1, wherein the accelerator is at least one of DM, CZ and TT.
6. The ethylene-propylene-diene monomer rubber for the high-temperature-resistant conveying belt as claimed in claim 1, wherein the sulfur is insoluble sulfur.
7. The high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt as claimed in claim 1, wherein the anti-aging agent is at least one of MB, RD and 4010 NA.
8. The high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt as claimed in claim 1, wherein the wear-resistant auxiliary agent is at least one of SI-A, SI-H.
9. The preparation method of the high-wear-resistance ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt as claimed in claims 1 to 8, which is characterized by comprising the following steps:
s1, first-stage mixing: putting the raw rubber into an internal mixer for plasticating for 2min, sequentially adding 30-60 parts of carbon black, 3-10 parts of zinc oxide, 1-2 parts of stearic acid and 1-3 parts of an accelerator according to a proportion, driving an upper ram press to provide mixing pressure for an internal mixing chamber, and carrying out internal mixing for 3min to obtain uniformly mixed masterbatch;
and (S2) two-stage mixing: and (3) remilling the masterbatch obtained by one-section mixing on an open mill, adding sulfur, performing thin pass triangular bag making for 6 times, and adjusting the roller distance to obtain the high-wear-resistant ethylene propylene diene monomer covering rubber for the high-temperature-resistant conveying belt.
10. The method for preparing the ethylene propylene diene monomer rubber for the high-temperature-resistant conveying belt according to claim 9, wherein the temperature of the internal mixer in the mixing in the first stage of the step S1 is 50-60 ℃, and the rotating speed is 30-40 r/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115304869A (en) * | 2022-07-26 | 2022-11-08 | 高科橡塑工业有限公司 | Ethylene propylene diene monomer rubber compound for high-adhesion and high-tear-resistance rubber roll and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275712A (en) * | 2011-05-23 | 2011-12-14 | 兖矿集团有限公司 | High-temperature resistant conveyer belt |
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