CN117659529A - Rubber composition containing modified epoxy resin and having excellent mechanical properties and application thereof - Google Patents
Rubber composition containing modified epoxy resin and having excellent mechanical properties and application thereof Download PDFInfo
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- CN117659529A CN117659529A CN202311763033.7A CN202311763033A CN117659529A CN 117659529 A CN117659529 A CN 117659529A CN 202311763033 A CN202311763033 A CN 202311763033A CN 117659529 A CN117659529 A CN 117659529A
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 57
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 57
- 229920001971 elastomer Polymers 0.000 title claims abstract description 46
- 239000005060 rubber Substances 0.000 title claims abstract description 46
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 239000006229 carbon black Substances 0.000 claims abstract description 32
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 19
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 16
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 16
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 16
- 229920001194 natural rubber Polymers 0.000 claims abstract description 16
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 14
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 14
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 14
- 239000004814 polyurethane Substances 0.000 claims abstract description 14
- 239000008117 stearic acid Substances 0.000 claims abstract description 14
- 239000011593 sulfur Substances 0.000 claims abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 14
- 239000011787 zinc oxide Substances 0.000 claims abstract description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- JYTXVMYBYRTJTI-UHFFFAOYSA-N 2-methoxyethyl 2-cyanoprop-2-enoate Chemical compound COCCOC(=O)C(=C)C#N JYTXVMYBYRTJTI-UHFFFAOYSA-N 0.000 claims abstract description 9
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 9
- LVMTVPFRTKXRPH-UHFFFAOYSA-N penta-1,2-diene Chemical compound CCC=C=C LVMTVPFRTKXRPH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000003213 activating effect Effects 0.000 claims abstract description 8
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 8
- CTRHXTNHKPKMSD-UHFFFAOYSA-N CC1(C(C(C(C(C1(C)C=C)(C)C=C)(C)C=C)(C)C=C)(C)C=C)C=C Chemical compound CC1(C(C(C(C(C1(C)C=C)(C)C=C)(C)C=C)(C)C=C)(C)C=C)C=C CTRHXTNHKPKMSD-UHFFFAOYSA-N 0.000 claims abstract 3
- 238000002156 mixing Methods 0.000 claims description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- JDLPYWQTHJDXFQ-UHFFFAOYSA-N 2,4,6,8,10,12-hexakis(ethenyl)-2,4,6,8,10,12-hexamethyl-1,3,5,7,9,11-hexaoxa-2,4,6,8,10,12-hexasilacyclododecane Chemical compound C=C[Si]1(C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O1 JDLPYWQTHJDXFQ-UHFFFAOYSA-N 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012190 activator Substances 0.000 claims description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- FUIQBJHUESBZNU-UHFFFAOYSA-N 2-[(dimethylazaniumyl)methyl]phenolate Chemical compound CN(C)CC1=CC=CC=C1O FUIQBJHUESBZNU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 239000007810 chemical reaction solvent Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 239000002952 polymeric resin Substances 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010550 living polymerization reaction Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a rubber composition containing modified epoxy resin, which comprises, by weight, 50-70 parts of solution polymerized styrene-butadiene rubber, 40-60 parts of natural rubber, 30-50 parts of butadiene rubber, 20-30 parts of polyurethane, 20-40 parts of carbon black filler, 15-30 parts of white carbon black, 5-10 parts of anti-aging agent, 5-8 parts of sulfur, 1-3 parts of hexamethyl hexavinylcyclohexane, 3-5 parts of stearic acid, 1-3 parts of zinc oxide, 1-3 parts of activating agent and 3-7 parts of modified epoxy resin, wherein the modified epoxy resin is prepared from bisphenol A type epoxy resin, a multifunctional polymer prepared from butadiene, acrylonitrile, ethylene glycol monomethyl ether 2-cyanoacrylate, acrylic acid and 1, 2-pentadiene. The rubber composition containing the modified epoxy resin provided by the invention has excellent mechanical properties, excellent wear resistance and better comprehensive properties.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a rubber composition containing modified epoxy resin and an application thereof.
Background
Tires are one of the main application products of rubber products, and half of the world consumption of rubber is used for tire manufacturing, while the development of rubber materials applied to tires requires strong theoretical support and innovation. Solid tires are not the main stream products in tires, but are widely used in important fields such as mineral exploitation, engineering construction, cargo transportation, etc. because of their good load carrying capacity and safety. The conventional tire rubber is prepared by blending Natural Rubber (NR), butadiene Rubber (BR) and emulsion styrene-butadiene rubber (ESBR), and the rubber is difficult to achieve the aim of high wet skid resistance and low rolling resistance together. Hysteresis loss of tire rubber and glass transition temperature (Tg) affect the wet skid resistance of the tire rubber to a large extent. Solution polymerized styrene-butadiene rubber (SSBR) is a copolymerization product obtained by anionic polymerization of butadiene and styrene in a hydrocarbon solvent, which is one of styrene-butadiene rubber and is also a rubber compound that is very widely used as a tire material. The relative molecular mass of the SSBR is adjustable, belongs to special rubber in styrene-butadiene rubber, and adopts an anionic living polymerization technology to adjust the combination amount of styrene in the SSBR and the microstructure and styrene unit sequence distribution of butadiene, so that the SSBR establishes the optimal triple balance among rolling resistance, wet skid resistance and wear resistance. Therefore, the solution polymerized styrene-butadiene rubber has the characteristics of excellent wear resistance, cold resistance, low heat generation, wet skid resistance, high rebound resilience and the like. However, SSBR has a lower Tg, less extrusion shrinkage, stable size, lower power during compounding, less heat generation, and can provide a compound with lower hysteresis heat generation and higher abrasion resistance when used in tire materials. Therefore, development of rubber materials having excellent mechanical properties is urgently required.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a rubber composition containing modified epoxy resin and an application thereof, wherein the rubber composition has excellent mechanical properties.
The invention provides a rubber composition containing modified epoxy resin, which is characterized by comprising, by weight, 50-70 parts of solution polymerized styrene-butadiene rubber, 40-60 parts of natural rubber, 30-50 parts of butadiene rubber, 20-30 parts of polyurethane, 20-40 parts of carbon black filler, 15-30 parts of white carbon black, 5-10 parts of anti-aging agent, 5-8 parts of sulfur, 1-3 parts of hexamethyl hexa-vinyl cyclosiloxane, 3-5 parts of stearic acid, 1-3 parts of zinc oxide, 1-3 parts of activator and 3-7 parts of modified epoxy resin, wherein the modified epoxy resin is prepared from a multifunctional polymer prepared from bisphenol A type epoxy resin, butadiene, acrylonitrile, ethylene glycol monomethyl ether 2-cyanoacrylate, acrylic acid and 1, 2-pentadiene.
Preferably, the carbon black filler is N330 of Dongguan Ji Deli chemical technology Co., ltd, and the CTAB adsorption specific surface area is 82m 2 /g。
Preferably, the white carbon black is precipitated white carbon black; further preferably, the white carbon black is 165GR of the company rotunda, france.
Preferably, the anti-aging agent adopts a composite anti-aging agent system consisting of RD, MB, DNP and 1010.
Preferably, the activator is in a mass ratio of 8:2:3:2, iron oxide, carboxymethyl cellulose and titanium dioxide.
Preferably, the modified epoxy resin is prepared from a multifunctional polymer prepared from bisphenol A type epoxy resin, butadiene, acrylonitrile, ethylene glycol monomethyl ether 2-cyanoacrylate, acrylic acid and 1, 2-pentadiene.
Preferably, the multifunctional polymer is prepared from 30 parts by weight of butadiene, 15 parts by weight of acrylonitrile, 5 parts by weight of ethylene glycol monomethyl ether 2-cyanoacrylate, 12 parts by weight of acrylic acid, 5 parts by weight of 1, 2-pentadiene.
Preferably, the reaction solvent used in the preparation of the multifunctional polymer is 40 parts by weight of acetone, 30 parts by weight of cyclohexane, 20 parts by weight of toluene, and 50 parts by weight of ethanol.
Preferably, the modified epoxy resin is prepared by the following preparation method:
1) Causing 30 parts by weight of butadiene, 15 parts by weight of acrylonitrile, 5 parts by weight of ethylene glycol monomethyl ether 2-cyanoacrylate, 12 parts by weight of acrylic acid and 5 parts by weight of 1, 2-pentadiene to undergo ammonium persulfate-initiated polymerization to generate a multifunctional polymer;
2) The generated multifunctional polymer and epoxy resin are catalyzed by dimethylamino methylphenol to prepare the multifunctional polymer modified epoxy resin;
preferably, the reaction solvent in the step 1) is preferably a mixed solvent of 30 to 50 parts by weight of acetone, 20 to 40 parts by weight of cyclohexane, 15 to 25 parts by weight of toluene and 40 to 60 parts by weight of ethanol.
Preferably, the reaction temperature in step 1) is 100-120 ℃.
Preferably, the reaction temperature in step 2) is 100-120 ℃.
Preferably, the weight ratio of epoxy resin to multifunctional polymer in step 2) is (100-110): (30-40).
Preferably, the rubber composition containing the modified epoxy resin is characterized by comprising, by weight, 60 parts of solution polymerized styrene-butadiene rubber, 50 parts of natural rubber, 40 parts of butadiene rubber, 25 parts of polyurethane, 30 parts of carbon black filler, 20 parts of white carbon black, 8 parts of an anti-aging agent, 7 parts of sulfur, 2 parts of hexamethyl hexavinyl cyclohexasiloxane, 4 parts of stearic acid, 2 parts of zinc oxide, 2 parts of an activator, and 5 parts of a modified epoxy resin.
The invention also provides a preparation method of the rubber composition containing the modified epoxy resin, which comprises the following steps:
(1) Adding solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black and an anti-aging agent into an internal mixer for banburying, wherein the rubber discharging temperature is controlled to be 140-160 ℃;
(2) Mixing on an open mill, controlling the roller temperature at 40-55 ℃, slowly adding sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and modified epoxy resin, mixing for 1-3 hours, and cooling for 6 hours;
(3) Vulcanizing the mixed system in the step (2) by adopting a flat vulcanizing machine, wherein the total pressure of the flat vulcanizing machine is 220N, the maximum hydraulic pressure is 17MPa, the vulcanizing temperature is 150-160 ℃, and the vulcanizing time is 70-100 minutes.
Advantageous effects
1. The rubber composition containing the modified epoxy resin provided by the invention comprises solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black, an anti-aging agent, sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and the like, and the modified epoxy resin with a novel structure is added, so that the rubber composition can be used for preparing tire rubber materials, and has excellent mechanical properties and excellent wear resistance.
2. The inventor of the invention finds that the modified epoxy resin containing various polar functional groups can enhance the viscosity of the modified epoxy resin, improve the combination property of the epoxy resin and other fillers, ensure that the rubber composition is dispersed more uniformly, and effectively improve the comprehensive performance of rubber.
Description of the embodiments
Examples the invention is further described in detail below in connection with specific embodiments. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the invention.
The experimental methods in the following examples are conventional except for those specifically described. The raw materials, experimental reagents and the like used in the examples were commercially available products obtained by purchase unless specified otherwise.
In a reaction kettle, mixing 30 parts by weight of butadiene, 15 parts by weight of acrylonitrile, 5 parts by weight of ethylene glycol monomethyl ether 2-cyanoacrylate, 12 parts by weight of acrylic acid, 5 parts by weight of 1, 2-pentadiene, 40 parts by weight of acetone, 30 parts by weight of cyclohexane, 20 parts by weight of toluene and 50 parts by weight of ethanol, heating to 90 ℃, dropwise adding a catalyst ammonium persulfate, maintaining the heating temperature for 6 hours, heating to 120 ℃, and maintaining the heating temperature for 2 hours to obtain a multifunctional polymer;
uniformly mixing 110 parts by weight of bisphenol A epoxy resin and 35 parts by weight of the multifunctional polymer prepared in the steps, heating to 120 ℃, adding catalyst dimethylaminomethylphenol, and maintaining the heating temperature for 4 hours to obtain the multifunctional polymer modified epoxy resin.
Examples
The rubber composition containing the modified epoxy resin comprises, by weight, 60 parts of solution polymerized styrene-butadiene rubber, 50 parts of natural rubber, 40 parts of butadiene rubber, 25 parts of polyurethane, 30 parts of carbon black filler, 20 parts of white carbon black, 8 parts of an anti-aging agent, 7 parts of sulfur, 2 parts of hexamethyl hexavinyl cyclohexasiloxane, 4 parts of stearic acid, 2 parts of zinc oxide, 2 parts of an activator and 5 parts of modified epoxy resin.
(1) Adding solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black and an anti-aging agent into an internal mixer for banburying, wherein the rubber discharging temperature is controlled to be 150 ℃;
(2) Mixing on an open mill, controlling the roller temperature at 50 ℃, slowly adding sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and modified epoxy resin, mixing for 2 hours, and cooling for 6 hours;
(3) Vulcanizing the mixed system in the step (2) by adopting a flat vulcanizing machine, wherein the total pressure of the flat vulcanizing machine is 220N, the maximum hydraulic pressure is 17MPa, the vulcanizing temperature is 150 ℃, and the vulcanizing time is 90 minutes.
Examples
The rubber composition containing the modified epoxy resin comprises, by weight, 70 parts of solution polymerized styrene-butadiene rubber, 40 parts of natural rubber, 30 parts of butadiene rubber, 20 parts of polyurethane, 20 parts of carbon black filler, 20 parts of white carbon black, 5 parts of an anti-aging agent, 7 parts of sulfur, 2 parts of hexamethyl hexavinyl cyclohexasiloxane, 4 parts of stearic acid, 2 parts of zinc oxide, 2 parts of an activator and 7 parts of modified epoxy resin.
(1) Adding solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black and an anti-aging agent into an internal mixer for banburying, wherein the rubber discharging temperature is controlled to be 150 ℃;
(2) Mixing on an open mill, controlling the roller temperature at 50 ℃, slowly adding sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and modified epoxy resin, mixing for 2 hours, and cooling for 6 hours;
(3) Vulcanizing the mixed system in the step (2) by adopting a flat vulcanizing machine, wherein the total pressure of the flat vulcanizing machine is 220N, the maximum hydraulic pressure is 17MPa, the vulcanizing temperature is 140 ℃, and the vulcanizing time is 100 minutes.
Examples
The rubber composition containing the modified epoxy resin comprises, by weight, 60 parts of solution polymerized styrene-butadiene rubber, 50 parts of natural rubber, 60 parts of butadiene rubber, 30 parts of polyurethane, 40 parts of carbon black filler, 15 parts of white carbon black, 10 parts of an anti-aging agent, 8 parts of sulfur, 3 parts of hexamethyl hexavinyl cyclohexasiloxane, 5 parts of stearic acid, 1 part of zinc oxide, 1 part of an activator and 4 parts of modified epoxy resin.
(1) Adding solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black and an anti-aging agent into an internal mixer for banburying, wherein the rubber discharging temperature is controlled to be 160 ℃;
(2) Mixing on an open mill, controlling the roller temperature at 55 ℃, slowly adding sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and modified epoxy resin, mixing for 3 hours, and cooling for 6 hours;
(3) Vulcanizing the mixed system in the step (2) by adopting a flat vulcanizing machine, wherein the total pressure of the flat vulcanizing machine is 220N, the maximum hydraulic pressure is 16MPa, the vulcanizing temperature is 160 ℃, and the vulcanizing time is 70 minutes.
According to the proportion of each raw material in the formulation of example 1 of CN111117021A, a rubber composition was obtained by referring to the preparation method of example 1 of the present application.
The rubber compositions prepared in examples 1 to 3 and comparative examples were subjected to performance test according to the following test methods, and the test results are shown in Table 1.
1. Tensile strength, tensile stress and elongation at break were measured according to GB/T528-2009.
2. Tear strength was measured according to GB/T529-1999 standard.
3. The acle abrasion loss was measured according to GB/T1689-1998 standard.
Table 1, results of Material Performance test in examples of the invention and comparative examples
| Example 1 | Example 2 | Example 3 | Comparative example | |
| 300% stress/MPa | 14.6 | 14.2 | 13.5 | 12.6 |
| Tensile Strength/MPa | 26.9 | 26.4 | 25.9 | 24.2 |
| Elongation at break/% | 489 | 463 | 457 | 429 |
| Tear Strength/kN.m -1 | 133 | 129 | 120 | 103 |
| Acle abrasion loss/(cm) 3 /1.61km)（60℃） | 0.234 | 0.220 | 0.219 | 0.182 |
As can be seen from the contents of Table 1, the rubber composition containing the modified epoxy resin provided by the invention has excellent mechanical properties and excellent wear resistance, and has better comprehensive properties than the comparative examples.
Although the invention has been described in detail hereinabove, those skilled in the art will appreciate that various modifications and changes can be made thereto without departing from the spirit and scope of the invention. The scope of the invention is not limited by the detailed description set forth above, but rather is to be attributed to the claims.
Claims (9)
1. The rubber composition containing the modified epoxy resin is characterized by comprising, by weight, 50-70 parts of solution polymerized styrene-butadiene rubber, 40-60 parts of natural rubber, 30-50 parts of butadiene rubber, 20-30 parts of polyurethane, 20-40 parts of carbon black filler, 15-30 parts of white carbon black, 5-10 parts of anti-aging agent, 5-8 parts of sulfur, 1-3 parts of hexamethyl hexavinylcyclohexane, 3-5 parts of stearic acid, 1-3 parts of zinc oxide, 1-3 parts of activating agent and 3-7 parts of modified epoxy resin, wherein the modified epoxy resin is prepared from a multifunctional polymer prepared from bisphenol A type epoxy resin, butadiene, acrylonitrile, ethylene glycol monomethyl ether 2-cyanoacrylate, acrylic acid and 1, 2-pentadiene.
2. The modified epoxy resin-containing rubber composition according to claim 1, wherein the activator is a compound having a mass ratio of 8:2:3:2, iron oxide, carboxymethyl cellulose and titanium dioxide.
3. The rubber composition containing a modified epoxy resin according to claim 1, wherein the rubber composition comprises, in parts by weight, 60 parts of solution polymerized styrene-butadiene rubber, 50 parts of natural rubber, 40 parts of butadiene rubber, 25 parts of polyurethane, 30 parts of carbon black filler, 20 parts of white carbon black, 8 parts of an anti-aging agent, 7 parts of sulfur, 2 parts of hexamethyl hexa vinyl cyclohexane, 4 parts of stearic acid, 2 parts of zinc oxide, 2 parts of an activator, and 5 parts of a modified epoxy resin.
4. The rubber composition containing a modified epoxy resin according to claim 1, wherein the multifunctional polymer is prepared from 30 parts by weight of butadiene, 15 parts by weight of acrylonitrile, 5 parts by weight of ethylene glycol monomethyl ether 2-cyanoacrylate, 12 parts by weight of acrylic acid, 5 parts by weight of 1, 2-pentadiene.
5. The rubber composition containing a modified epoxy resin according to claim 1, wherein the anti-aging agent is a composite anti-aging agent system composed of RD, MB, DNP and 1010.
6. The rubber composition containing a modified epoxy resin according to claim 1, wherein the modified epoxy resin is prepared by the following preparation method:
1) Causing 30 parts by weight of butadiene, 15 parts by weight of acrylonitrile, 5 parts by weight of ethylene glycol monomethyl ether 2-cyanoacrylate, 12 parts by weight of acrylic acid and 5 parts by weight of 1, 2-pentadiene to undergo ammonium persulfate-initiated polymerization to generate a multifunctional polymer;
2) The generated multifunctional polymer and epoxy resin are catalyzed by dimethylaminomethylphenol to prepare the multifunctional polymer modified epoxy resin.
7. The rubber composition containing a modified epoxy resin according to claim 6, wherein the reaction solvent in the step 1) is preferably a mixed solvent of 30 to 50 parts by weight of acetone, 20 to 40 parts by weight of cyclohexane, 15 to 25 parts by weight of toluene and 40 to 60 parts by weight of ethanol.
8. The rubber composition containing a modified epoxy resin according to claim 6, wherein the weight ratio of epoxy resin to polyfunctional polymer in the step 2) is (100-110): (30-40).
9. A process for preparing the modified epoxy resin-containing rubber composition of claim 1, comprising the steps of:
(1) Adding solution polymerized styrene-butadiene rubber, natural rubber, butadiene rubber, polyurethane, carbon black filler, white carbon black and an anti-aging agent into an internal mixer for banburying, wherein the rubber discharging temperature is controlled to be 140-160 ℃;
(2) Mixing on an open mill, controlling the roller temperature at 40-55 ℃, slowly adding sulfur, hexamethyl hexavinyl cyclohexasiloxane, stearic acid, zinc oxide, an activating agent and modified epoxy resin, mixing for 1-3 hours, and cooling for 6 hours;
(3) Vulcanizing the mixed system in the step (2) by adopting a flat vulcanizing machine, wherein the total pressure of the flat vulcanizing machine is 220N, the maximum hydraulic pressure is 17MPa, the vulcanizing temperature is 150-160 ℃, and the vulcanizing time is 70-100 minutes.
Priority Applications (1)
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| CN202311763033.7A CN117659529A (en) | 2023-12-21 | 2023-12-21 | Rubber composition containing modified epoxy resin and having excellent mechanical properties and application thereof |
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| CN202311763033.7A CN117659529A (en) | 2023-12-21 | 2023-12-21 | Rubber composition containing modified epoxy resin and having excellent mechanical properties and application thereof |
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