CN113637226A - Bamboo charcoal-carbon black nano composite reinforcing agent, preparation method and application thereof - Google Patents
Bamboo charcoal-carbon black nano composite reinforcing agent, preparation method and application thereof Download PDFInfo
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- CN113637226A CN113637226A CN202110944585.2A CN202110944585A CN113637226A CN 113637226 A CN113637226 A CN 113637226A CN 202110944585 A CN202110944585 A CN 202110944585A CN 113637226 A CN113637226 A CN 113637226A
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 128
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 127
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 127
- 241001330002 Bambuseae Species 0.000 title claims abstract description 124
- 239000011425 bamboo Substances 0.000 title claims abstract description 124
- 239000006229 carbon black Substances 0.000 title claims abstract description 76
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 43
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 67
- 239000005060 rubber Substances 0.000 claims abstract description 67
- 239000000835 fiber Substances 0.000 claims abstract description 62
- 239000002002 slurry Substances 0.000 claims abstract description 19
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 23
- 230000023556 desulfurization Effects 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 17
- 230000003009 desulfurizing effect Effects 0.000 claims description 14
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 12
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 12
- 239000002912 waste gas Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 claims description 4
- GUUVPOWQJOLRAS-UHFFFAOYSA-N Diphenyl disulfide Chemical compound C=1C=CC=CC=1SSC1=CC=CC=C1 GUUVPOWQJOLRAS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010920 waste tyre Substances 0.000 claims description 4
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 claims description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims description 2
- 125000002228 disulfide group Chemical group 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- PFRGXCVKLLPLIP-UHFFFAOYSA-N diallyl disulfide Chemical compound C=CCSSCC=C PFRGXCVKLLPLIP-UHFFFAOYSA-N 0.000 claims 2
- YYYOQURZQWIILK-UHFFFAOYSA-N 2-[(2-aminophenyl)disulfanyl]aniline Chemical compound NC1=CC=CC=C1SSC1=CC=CC=C1N YYYOQURZQWIILK-UHFFFAOYSA-N 0.000 claims 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 claims 1
- 238000010000 carbonizing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 241000196324 Embryophyta Species 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002131 composite material Substances 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000003763 carbonization Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 241000209128 Bambusa Species 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 244000271437 Bambusa arundinacea Species 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 benzene class compound Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000006235 reinforcing carbon black Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000010998 test method Methods 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L17/00—Compositions of reclaimed rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2317/00—Characterised by the use of reclaimed rubber
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention relates to the technical field of chemical industry, in particular to a bamboo charcoal-carbon black nano composite reinforcing agent, which comprises the following steps of S1, introducing organic gas containing organic matters into bamboo fiber slurry, drying and primarily carbonizing the bamboo fiber slurry, adsorbing the organic matters containing benzene and realizing low density of fibers, wherein the temperature of the gas containing the organic matters is higher than 250 ℃; s2, heating the bamboo fiber primarily carbonized in the step S1 in a high-temperature muffle furnace, and keeping the temperature constant until the plant fiber is completely carbonized to obtain the bamboo charcoal-carbon black nano composite reinforcing agent. The adsorption effect of the bamboo fibers is firstly utilized, so that benzene-containing organic matters are loaded in the bamboo fibers and on the surfaces of the bamboo fibers, then the organic matters and the bamboo fibers are carbonized at the same time at high temperature, carbon black generated by carbonizing the organic matters is directly attached to the bamboo carbon black to form a carbon black layer, the surface area of the bamboo carbon black is increased, and more binding sites can be provided for rubber.
Description
Technical Field
The invention relates to the technical field of chemical industry, and particularly relates to a bamboo charcoal-carbon black nano composite reinforcing agent, a preparation method and application thereof.
Background
Carbon black is a common additive for rubber articles and has been used widely in both virgin and reclaimed rubber applications. The mechanical property, the wear resistance and the like of the tire can be improved by adding the carbon black into the tire, at present, the carbon black is usually added into a tire product by directly mixing the carbon black with other raw materials such as rubber powder and the like and then obtaining rubber by a rubber mixing mode and the like, but the carbon black is easy to agglomerate and has the problem of uneven dispersion in the rubber product.
Patent CN107674271A discloses a wear-resistant and skid-resistant rubber compound for tires, which comprises raw materials such as powdered styrene-butadiene rubber, nano loess powder, glass fiber, bamboo charcoal, montmorillonite 5-10 parts, hydroxyl-terminated liquid styrene-butadiene rubber, aluminum hydroxide, calcium sulfate whisker, furnace carbon black and the like. According to the formula of the rubber, carbon black, bamboo charcoal and the like are added, so that the wear resistance of the rubber is improved, but in the formula, the carbon black and the bamboo charcoal are easy to agglomerate and are simply and physically mixed, so that an interaction force cannot be formed, and the reinforcing effect on the rubber is poor.
Disclosure of Invention
The invention aims to provide a preparation method of a bamboo charcoal-carbon black nano composite reinforcing agent, which comprises the steps of firstly loading organic matters on the inner part and the surface of bamboo fibers by utilizing the adsorption effect of the bamboo fibers, then carbonizing the organic matters and the bamboo fibers at high temperature simultaneously, and directly attaching carbon black generated by carbonizing the organic matters to the bamboo carbon black to form a carbon black layer, so that the surface area of the bamboo carbon black is increased, and more binding sites can be provided for rubber.
The invention is realized by the following technical scheme: a method for preparing bamboo charcoal-carbon black nano composite reinforcing agent comprises the following steps,
s1, organic gas containing organic matters is introduced into the bamboo fiber slurry, the bamboo fiber slurry is dried and primarily carbonized, the organic matters containing benzene are adsorbed, and simultaneously, the low density of the fibers is realized, wherein the temperature of the organic gas is higher than 250 ℃;
s2, heating the bamboo fiber primarily carbonized in the step S1 in a high-temperature muffle furnace, and keeping the temperature constant until the bamboo fiber is completely carbonized to obtain the bamboo charcoal-carbon black nano composite reinforcing agent.
The preparation method of the bamboo fiber slurry comprises the steps of crushing natural bamboos into the slurry at a high speed, and then stirring the slurry in a low-speed stirrer at a low speed for 1 to 2 hours to fully soak and mix the slurry, so as to obtain the bamboo fiber slurry.
According to the invention, organic gas containing organic matters is firstly introduced into the bamboo fiber slurry, the porous structure of the bamboo fiber has an adsorption effect, the organic matters in the gas are attached to the inner part and the surface of the bamboo fiber, the benzene-containing organic matters are adsorbed and the fiber density is reduced through the drying and the preliminary carbonization of high-temperature gas, then the bamboo fiber after the preliminary carbonization is carbonized in a high-temperature muffle furnace, and the organic matters are attached to the surface and the inner part of the bamboo fiber, so that carbon black formed by the carbonization of the organic matters grows in situ in the carbonization process, an organic matter carbon black layer is formed on the bamboo carbon black, and the branched chain of the organic matter carbon black layer interacts with the fiber structure of the bamboo carbon black, so that the bamboo charcoal-carbon black composite reinforcing agent is relatively loose.
The bamboo charcoal-carbon black reinforcing agent prepared by the invention is accumulated in the form of high-structure carbon black aggregates, and developed chain branches or fiber structures of the high-structure carbon black aggregates interact with each other, so that the tensile strength of rubber is improved, and the density of original rubber is reduced; and due to the large number of micro-nano hole structures, small molecular organic matters can be effectively adsorbed and fixed, and the odorless modification effect of the regenerated rubber is achieved.
Further, the introduction rate of the organic gas is 0.5-6m3And/s, the temperature of the organic gas is 250-800 ℃.
Further, in the step S1, the organic substance is any one of benzene, diisopropylbenzene, acid anhydride, phenylethane, xylene or trimethylbenzene.
Furthermore, in the bamboo fiber slurry, the particle size of the bamboo fibers is less than or equal to 10 meshes.
The invention also aims to provide a preparation method of the regenerated rubber based on the bamboo charcoal-carbon black nano composite reinforcing agent, which comprises the following steps,
and (3) carrying out dynamic devulcanization in a devulcanizer by using the bamboo charcoal-carbon black nano composite reinforcing agent, the waste tire powder, the activating agent, the rosin and the desulfurizing agent in an infrared irradiation devulcanizer to obtain the regenerated rubber.
The bamboo charcoal-carbon black nano composite reinforcing agent prepared by the method has the advantages that the bamboo charcoal black is fibrous, the organic carbon black is layered, the layered organic carbon black is attached to the surface of the bamboo charcoal black, the bamboo charcoal black and the organic carbon black form a net structure, more rubber binding sites are provided, the bonding strength of the bamboo charcoal-carbon black nano composite reinforcing agent and rubber is improved, the bamboo charcoal-carbon black nano composite reinforcing agent has a porous low-density structure, the physical entanglement effect of the rubber is increased, the in-situ regeneration and the reinforcement of the rubber are realized, and the light high-strength regenerated rubber with low energy consumption is obtained.
Further, the dynamic desulfurization condition is 3.0MPa, and the pressure maintaining time is 60 min.
Further, the organic gas is waste gas generated by the infrared radiation desulfurization tank.
Utilize bamboo fiber slurry to adsorb the waste gas that produces in the reclaimed rubber preparation process, firstly can preliminary waste gas handle, secondly, directly regard benzene class compound in the waste gas as the carbon source of organic carbon black, improved the utilization ratio of desulfurizer, thirdly, utilized the heat of waste gas among the desulfurization process to carry out drying and preliminary carbonization to bamboo fiber slurry, realize the heat and recycle, reduce the thermal loss, further reduction reclaimed rubber's manufacturing cost.
Further, the reclaimed rubber comprises the following raw materials in parts by weight,
20-40 parts of bamboo charcoal-carbon black nano composite reinforcing agent, 100 parts of waste tire powder, 1-3 parts of activating agent, 1-2 parts of rosin and 0.5-1 part of desulfurizing agent.
Further, the activator is a disulfide, and the desulfurizing agent is diphenyl disulfide.
The technical scheme of the invention at least has the following advantages and beneficial effects:
according to the invention, the carbon source is attached to the surface of the fiber by utilizing the adsorption effect of the bamboo fiber, and then the carbon source is carbonized at high temperature, so that the organic carbon source is carbonized in situ on the bamboo fiber to form a carbon black layer, the dispersibility between the carbon black and the bamboo charcoal is improved, a reticular structure is formed, and more rubber binding sites are provided. The composite reinforcing agent simultaneously has bamboo charcoal and carbon black, and is low in porous density, so that the physical entanglement of rubber is increased, the in-situ growth and reinforcement of the rubber are realized, the density and strength of the rubber are further improved, and the light high-strength rubber can be obtained.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The natural bamboo pulp in the embodiments 1 to 10 of the present application is natural bamboo pulp with a water content of 12%, and the preparation method thereof is as follows: removing branches and leaves of fresh bamboos, crushing natural bamboos at a high speed to form slurry, and then stirring at a low speed in a low-speed stirrer for 1-2 hours to fully soak and mix the slurry to obtain the bamboo fiber slurry; controlling the grain diameter of the bamboo fiber by controlling the crushing time, and controlling the water content of the natural bamboo pulp by controlling the water adding amount or adopting low-temperature drying; the variety of bamboo is not limited, and can be common bamboo varieties.
In the preparation of the bamboo charcoal-carbon black nano composite reinforcing agent in the embodiments 1 to 10, the amount of the natural bamboo pulp is 60 parts, that is, the amount of the natural bamboo pulp is 60% of the amount of the tire rubber powder by weight.
In examples 1 to 10 of the present application, the exhaust rate of the exhaust pipe of the desulfurizing tank is 2 to 4m3/s。
Example 1:
mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 60 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 350 deg.C, maintaining the temperature for 1hr, and completely carbonizing to obtain bamboo charcoal-carbon black nanometer composite reinforcing agent No. 1.
Weighing 100 parts of tire rubber powder (40 meshes), 30 parts of bamboo charcoal-carbon black nano composite reinforcing agent No. 1, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and the pressure maintaining time of 60min, and simultaneously releasing pressure to discharge waste gas into bamboo pulp fibers.
Example 2:
mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 60 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 400 deg.C, maintaining the temperature for 1hr, and completely carbonizing to obtain bamboo charcoal-carbon black nanometer composite reinforcing agent No. 2.
Weighing 100 parts of tire rubber powder (40 meshes), 30 parts of bamboo charcoal-carbon black nano composite reinforcing agent No. 2, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and the pressure maintaining time of 60min, and simultaneously releasing pressure to discharge waste gas into bamboo pulp fibers.
Example 3
Mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 60 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 450 deg.C, maintaining the temperature for 1hr, and completely carbonizing to obtain bamboo charcoal-carbon black nanometer composite reinforcing agent No. 3.
Weighing 100 parts of tire rubber powder (40 meshes), 30 parts of bamboo charcoal-carbon black nano composite reinforcing agent No. 3, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and the pressure maintaining time of 60min, and simultaneously releasing pressure to discharge waste gas into bamboo pulp fibers.
Example 4
Mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 30 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 350 deg.C, maintaining the temperature for 1hr, and completely carbonizing to obtain bamboo charcoal-carbon black nanometer composite reinforcing agent No. 4.
Weighing 100 parts of tire rubber powder (40 meshes), 30 parts of bamboo charcoal-carbon black nano composite reinforcing agent, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and keeping the pressure for 60min, and simultaneously releasing the pressure to discharge waste gas into bamboo pulp fibers.
Example 5
Mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 60 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 350 deg.C, maintaining the temperature for 1hr, and completely carbonizing to obtain bamboo charcoal-carbon black nanometer composite reinforcing agent No. 1.
Weighing 100 parts of tire rubber powder (40 meshes), 40 parts of bamboo charcoal-carbon black nano composite reinforcing agent No. 1, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and the pressure maintaining time of 60min, and simultaneously releasing pressure to discharge waste gas into bamboo pulp fibers.
Example 6
Mixing natural bamboo pulp (10 mesh) in low speed stirrer at 20r/min for 1hr to disperse uniformly, and introducing into exhaust pipe of desulfurizing tank for 60 min. Filtering the dried and primarily carbonized bamboo fiber, taking out, placing in a high-temperature muffle furnace, heating to 350 deg.C, maintaining the temperature for 2hr to completely carbonize, and making into bamboo charcoal-carbon black nanometer composite reinforcer No. 6.
Weighing 100 parts of tire rubber powder (40 meshes), 30 parts of bamboo charcoal-carbon black nano composite reinforcing agent No. 6, 1 part of activating agent, 1 part of rosin and 0.5 part of desulfurizer, feeding the materials into an infrared irradiation desulfurization tank, taking the prepared low-energy-consumption high-strength light bamboo fiber regenerated rubber out of the desulfurization tank under the desulfurization condition of 3.0MPa and the pressure maintaining time of 60min, and simultaneously releasing pressure to discharge waste gas into bamboo pulp fibers.
Examples 7 to 10
The regenerated rubber was prepared according to the formulation shown in table 1 using the bamboo charcoal-carbon black nanocomposite reinforcing agent No. 1 prepared in example 1 and the preparation method of the regenerated rubber in example 1.
TABLE 1 reclaimed rubber stock formulations for examples 7-10
| Example 7 | Example 8 | Example 9 | Example 10 | |
| Reinforcing agent | 30 | 40 | 20 | 40 |
| Tire rubber powder | 100 | 100 | 100 | 100 |
| Activating agent | 1.5 | 1 | 3 | 2 |
| Rosin | 1.5 | 2 | 0.5 | 1 |
| Desulfurizing agent | 1 | 0.5 | 1 | 0.5 |
Comparative examples 1 to 5:
the regenerated rubbers of comparative examples 1 to 5 were prepared by the method of preparing the regenerated rubber of example 1, except that in comparative examples 1 to 5, the bamboo charcoal alone and the industrial carbon black alone were mixed with other raw materials and then charged into a devulcanizer, and the specific formulation thereof is shown in table 2:
TABLE 2 regenerated rubber formulations of comparative examples 1-5
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | |
| Bamboo charcoal | 10 | 20 | 15 | 25 | 5 |
| Industrial carbon black | 20 | 10 | 15 | 5 | 25 |
| Tire rubber powder | 100 | 100 | 100 | 100 | 100 |
| Activating agent | 1 | 1 | 1 | 1 | 1 |
| Rosin | 1 | 1 | 1 | 1 | 1 |
| Desulfurizing agent | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
In table 2, the amounts of the respective raw materials added are parts by mass, and the industrial carbon black is reinforcing carbon black commonly used in the rubber field and can be directly purchased from the market.
Experimental example:
1. the hardness, 100% stress at definite elongation, tensile strength (MPa), elongation at break and permanent set at break of the reclaimed rubbers of examples 1 to 10 and comparative examples 1 to 5 were respectively measured by the test methods in GB/T528-.
TABLE 3 properties associated with the reclaimed rubbers of examples 1 to 10 and comparative examples 1 to 5
It can be seen from table 3 that the rubber prepared in examples 1-10 has excellent mechanical properties, which indicates that in examples 1-10, carbon sources are attached to the surfaces of the fibers, and after high-temperature carbonization, organic carbon sources are carbonized in situ on the bamboo fibers to form carbon black layers, so that the dispersibility between carbon black and bamboo charcoal is improved, and the carbon black and bamboo charcoal form a network structure to provide more rubber binding sites. When the reinforcing agents of examples 1 to 10 were added to the rubber powder, the binding property between the rubber powder and the reinforcing agent was good. The composite reinforcing agent simultaneously has bamboo charcoal and carbon black, and is low in porous density, so that the physical entanglement of rubber is increased, the in-situ growth and reinforcement of the rubber are realized, the density and strength of the rubber are further improved, and the light high-strength rubber can be obtained.
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. A preparation method of bamboo charcoal-carbon black nano composite reinforcing agent is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1, organic gas containing organic matters is introduced into the bamboo fiber slurry, and the bamboo fiber slurry is dried and primarily carbonized;
s2, heating the bamboo fiber primarily carbonized in the step S1 in a high-temperature muffle furnace, and keeping the temperature constant until the bamboo fiber is completely carbonized to obtain the bamboo charcoal-carbon black nano composite reinforcing agent.
2. The method for preparing bamboo charcoal-carbon black nano composite reinforcing agent according to claim 1, characterized in that: in the step S1, the organic substance is at least one of benzene, diisopropylbenzene, acid anhydride, phenylethane, xylene or trimethylbenzene.
3. The method for preparing bamboo charcoal-carbon black nano composite reinforcing agent according to claim 1, characterized in that: the introduction rate of the organic gas is 0.5-6m3And/s, the temperature of the organic gas is 250-800 ℃.
4. The method for preparing bamboo charcoal-carbon black nano composite reinforcing agent according to claim 1, characterized in that: in the bamboo fiber slurry, the particle size of the bamboo fiber is less than or equal to 10 meshes.
5. A bamboo charcoal-carbon black nano composite reinforcing agent is characterized in that: prepared by the preparation method of any one of claims 1 to 4.
6. A preparation method of regenerated rubber based on the bamboo charcoal-carbon black nano composite reinforcing agent as claimed in claim 5, characterized in that: comprises the following steps of (a) carrying out,
and (3) carrying out dynamic devulcanization in a devulcanizer by using the bamboo charcoal-carbon black nano composite reinforcing agent, the waste tire powder, the activating agent, the rosin and the desulfurizing agent in an infrared irradiation devulcanizer to obtain the regenerated rubber.
7. The process for producing a reclaimed rubber according to claim 6, characterized in that: the dynamic desulfurization condition is 3.0Mpa, and the pressure maintaining time is 60 min.
8. The process for producing a reclaimed rubber according to claim 6, characterized in that: the organic gas is waste gas generated by the infrared radiation desulfurization tank.
9. The process for producing a reclaimed rubber according to claim 6, characterized in that: the regenerated rubber comprises the following raw materials in parts by weight:
20-40 parts of bamboo charcoal-carbon black nano composite reinforcing agent, 100 parts of waste tire powder, 1-3 parts of activating agent, 1-2 parts of rosin and 0.5-1 part of desulfurizing agent.
10. The process for producing a reclaimed rubber according to claim 9, characterized in that: the activator is a disulfide, and the desulfurizer is at least one of diphenyl disulfide, aminophenyl disulfide, di (o-benzoylamino) disulfide or allyl disulfide.
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