CN115028911A - Production process of flexible damping reclaimed rubber - Google Patents
Production process of flexible damping reclaimed rubber Download PDFInfo
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- CN115028911A CN115028911A CN202210807226.7A CN202210807226A CN115028911A CN 115028911 A CN115028911 A CN 115028911A CN 202210807226 A CN202210807226 A CN 202210807226A CN 115028911 A CN115028911 A CN 115028911A
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L17/00—Compositions of reclaimed rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
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- 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
- C08J11/12—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 by dry-heat treatment only
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- 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
- C08J11/14—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 by treatment with steam or water
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
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- 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
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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Abstract
The invention discloses a production process of flexible damping reclaimed rubber, which comprises a sealing tank, a cover body and a stirring mechanism, wherein the cover body is arranged at the top end of the sealing tank through a hinge; the stirring mechanism is assembled in the inner cavity of the sealed tank; the motor is arranged on the left side of the outer wall of the sealing tank through a screw; one end of the connecting rod is locked and fixed at the output end of the right surface of the motor through a coupler, and the other end of the connecting rod is arranged on the right side of the inner wall of the sealing tank through a bearing; the first rotary drum is in interference fit with the middle position of the outer wall of the connecting rod; first bracing piece quantity is a plurality of, and one end fixed mounting respectively on the outer wall of first rotary drum. The reclaimed rubber prepared by the invention has the advantages of simple process steps, easy matching and high working efficiency, and all components in the chemical auxiliary agent are matched with each other, so that the performance of the final reclaimed rubber product is greatly improved, the mechanical property and the damping property of the product are enhanced, and the produced product has good ductility, is not easy to break and has long service life.
Description
Technical Field
The invention relates to the technical field of reclaimed rubber preparation, in particular to a production process of flexible damping reclaimed rubber.
Background
Along with the rapid development of the automobile industry, the production amount of waste tires is larger and larger, and serious pollution is caused to the environment at hand, however, if the waste rubber can be reasonably recycled, the method has important significance for solving the problem of black pollution and relieving the shortage of rubber resources in China. The reclaimed rubber is a main mode for comprehensively utilizing waste rubber in China;
the production process of regenerated rubber with waste rubber tyre, rubber shoe and other waste rubber products as material includes the following steps: rubber powder preparation (the waste tires are subjected to cleaning, chopping, magnetic separation, screening and fiber separation to remove iron and fiber materials in the tires), desulfurization, kneading, filtration, refining and forming to obtain a finished product of reclaimed rubber. The reclaimed rubber obtained at present has a plurality of advantages and is used in a large amount, but the energy consumption in the production process is too high, the produced product has poor tearing resistance, poor aging resistance and low physical and mechanical strength, the damping coefficient of the product is smaller, and the use requirement of special occasions cannot be met.
Disclosure of Invention
The invention aims to provide a production process of flexible damping reclaimed rubber, which at least solves the problems that in the prior art, a product has poor tearing resistance and aging resistance, low physical and mechanical strength and small damping coefficient, and can not meet the use requirements of special occasions.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of flexible damping reclaimed rubber comprises the following steps:
sealing the tank;
the cover body is arranged at the top end of the sealing can through a hinge;
the stirring mechanism is assembled in the inner cavity of the sealed tank;
the stirring mechanism includes:
the motor is arranged on the left side of the outer wall of the sealing tank through a screw;
one end of the connecting rod is locked and fixed at the output end of the right surface of the motor through a coupler, and the other end of the connecting rod is installed on the right side of the inner wall of the sealing tank through a bearing;
the first rotating cylinder is in interference fit with the middle position of the outer wall of the connecting rod;
the first supporting rods are a plurality of, and one ends of the first supporting rods are fixedly arranged on the outer wall of the first rotary drum respectively;
a plurality of stirring blades, wherein one side of each stirring blade is fixedly arranged at the other end of the first supporting rod;
the number of the second rotary drums is a plurality, and the second rotary drums are respectively in interference fit with the left side and the right side of the outer wall of the connecting rod;
two ends of the second supporting rod are respectively fixedly connected with the outer wall of the second rotary drum and the other side of the stirring blade;
step one, taking back the collected old rubber product for primary crushing, injecting a water-based paint remover into an inner cavity of the sealed tank, putting the primarily crushed old rubber product into a sealed tank for stirring and washing, putting the washed old rubber product into a crusher for further crushing, and then putting the crushed old rubber product into a screening machine for screening;
step two, further crushing and screening the screened rubber product particles with the diameter larger than 0.16mm to finally obtain coarse rubber product particles with the mu f of 3.7-3.1 and fine rubber product particles with the mu f of 2.2-1.6, respectively washing the coarse rubber product particles and the fine rubber product particles, drying, grinding the coarse rubber product particles into powder, and mixing the powder with the fine rubber product particles to be used as a raw material;
step three, desulfurization → kneading → filtration → refining → molding.
Preferably, the concentration of the aqueous paint remover in the step one is 400-450 g/L, and the aqueous paint remover is formed by combining one or more of benzyl alcohol, benzaldehyde, benzoic acid and N-methylpyrrolidone.
Preferably, in the third step, the desulfurization is carried out by using a dynamic desulfurization tank:
s1, firstly starting stirring, and then adding the raw materials, the softening agent, the filling agent and the activating agent;
s2, introducing steam for heating or directly heating, desulfurizing for 75-90min, stopping heating when the specified temperature and pressure are reached, keeping pressure for timing, stopping stirring after the specified pressure keeping time of the process is reached, opening an exhaust valve for exhausting, opening an auxiliary exhaust when the pressure is zero, exhausting residual gas, and then opening a tank opening for discharging;
and S3, conveying the rubber material into a quick cooling device, cooling and stacking.
Preferably, in S2, the raw material, the softener, the functional assistant and the activator are in parts by weight: 800-1000 parts of raw material, 120-150 parts of softening agent, 30-50 parts of filling agent and 20-50 parts of activating agent.
Preferably, the softening agent is a combination of vegetable oil, rosin, resin aid, paraffin oil, stearic acid and zinc oxide.
Preferably, the functional aid is various combinations of an anti-aging agent, a plasticizer and a filler.
Preferably, the activating agent is one or more of zinc stearate, sodium stearate, vinyl ferrocene and ferric chloride.
Preferably, in S2, the heating is carried out to 180-200 ℃, the pressure in the desulfurization tank is increased from normal pressure to 1-1.5MPa at the pressurization rate of 0.1MPa/min, and the pressure is maintained for 8-10 min; increasing the pressure in the desulfurizing tank to 2-2.2MPa at a pressurizing rate of 0.01MPa/min, and maintaining the pressure for 30-40 min.
The production process of the flexible damping reclaimed rubber provided by the invention has the beneficial effects that: the reclaimed rubber prepared by the invention has the advantages of simple process steps, easy matching and high working efficiency, and all components in the chemical auxiliary agent are matched with each other, so that the performance of the final reclaimed rubber product is greatly improved, the mechanical property and the damping property of the product are enhanced, and the produced product has good ductility, is not easy to break and has long service life.
Drawings
FIG. 1 is a schematic cross-sectional view of a sealable tank of the present invention;
fig. 2 is a schematic structural diagram of the cover body according to the present invention.
In the figure: 1. the device comprises a sealed tank, 2, a cover body, 3, a stirring mechanism, 31, a motor, 32, a connecting rod, 33, a first rotating drum, 34, a first supporting rod, 35, a stirring blade, 36, a second rotating drum, 37 and a second supporting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1:
a production process of flexible damping reclaimed rubber comprises the following steps:
step one, preparing 30% of benzyl alcohol, 60% of benzaldehyde and 10% of N-methyl pyrrolidone into a water-based paint remover with the concentration of 420g/L, injecting the water-based paint remover into an inner cavity of a sealed tank 1, starting a motor 32, driving a first rotary drum 33, a second rotary drum 36, a first supporting rod 34, a second supporting rod 37 and a stirring blade 35 to rotate and stir together by the motor 32, putting a recovered old rubber product into the sealed tank 1, closing a cover body 2, stirring and washing the old rubber product in the inner cavity of the sealed tank 1 by the stirring blade 35, putting the stirred and washed old rubber product into a crusher for crushing, and putting the crushed old rubber product into a screening machine for screening;
step two, further crushing and screening the screened rubber product particles with the diameter larger than 0.16mm, finally respectively using a 45-mesh screen to obtain coarse rubber product particles with the mu f of 3.7-3.1 and a 70-80-mesh screen to obtain fine rubber product particles with the mu f of 2.2-1.6, respectively washing the coarse rubber product particles and the fine rubber product particles, respectively washing the water-based paint remover on the surface of the refined waste, drying, grinding the coarse rubber product particles into powder, and mixing the powder with the fine rubber product particles to be used as a raw material;
step three, desulfurization → kneading → filtration → refining → molding;
and (3) desulfurizing by using a dynamic desulfurizing tank:
s1, firstly starting stirring, and then adding the raw materials, the softening agent, the filling agent and the activating agent;
the weight parts of the raw materials, the softening agent, the functional auxiliary agent and the activating agent are as follows: 800 parts of raw materials, 120 parts of softeners, 30 parts of fillers and 20 parts of activators;
the softener is a combination of vegetable oil, rosin, resin auxiliary agent, paraffin oil, stearic acid and zinc oxide;
the functional auxiliary agent is an anti-aging agent, a plasticizer and a filler;
the oxidant is the combination of zinc stearate, sodium stearate and vinyl ferrocene;
s2, introducing steam for heating or directly heating, desulfurizing for 75min, stopping heating when the specified temperature and pressure are reached, keeping pressure for timing, stopping stirring after the specified pressure keeping time of the process is reached, opening an exhaust valve for exhausting, opening an auxiliary exhaust when the pressure is zero, exhausting residual gas, and then opening a tank opening for discharging;
heating to 180 deg.C, increasing the pressure in the desulfurizing tank from normal pressure to 1MPa at a pressurizing rate of 0.1MPa/min, and maintaining the pressure for 8 min; increasing the pressure in the desulfurizing tank to 2MPa at the pressurizing rate of 0.01MPa/min, and maintaining the pressure for 30 min;
and S3, conveying the rubber material into a quick cooling device, cooling and stacking.
Example 2:
a production process of flexible damping reclaimed rubber comprises the following steps:
step one, preparing 30% of benzyl alcohol, 50% of benzaldehyde and 20% of benzoic acid into a water-based paint remover with the concentration of 440g/L, injecting the water-based paint remover into the inner cavity of a sealed tank 1, starting a motor 32, driving a first rotary drum 33, a second rotary drum 36, a first supporting rod 34, a second supporting rod 37 and a stirring blade 35 to rotate and stir together by the motor 32, putting the recovered old rubber product into the sealed tank 1, closing a cover body 2, stirring and washing the old rubber product in the inner cavity of the sealed tank 1 by the stirring blade 35, putting the stirred and washed old rubber product into a grinder to be ground, and putting the ground old rubber product into a screening machine to be screened;
step two, further crushing and screening the screened rubber product particles with the diameter larger than 0.16mm, finally respectively using a 45-mesh screen to obtain coarse rubber product particles with the mu f of 3.7-3.1 and a 70-80-mesh screen to obtain fine rubber product particles with the mu f of 2.2-1.6, respectively washing the coarse rubber product particles and the fine rubber product particles, respectively washing the water-based paint remover on the surface of the refined waste, drying, grinding the coarse rubber product particles into powder, and mixing the powder with the fine rubber product particles to be used as a raw material;
step three, desulfurization → kneading → filtration → refining → molding;
and (3) desulfurizing by using a dynamic desulfurizing tank:
s1, firstly starting stirring, and then adding the raw materials, the softening agent, the filling agent and the activating agent;
the weight parts of the raw materials, the softening agent, the functional auxiliary agent and the activating agent are as follows: 1000 parts of raw materials, 150 parts of softening agents, 50 parts of filling agents and 50 parts of activating agents;
the softener is a combination of vegetable oil, rosin, resin auxiliary agent, paraffin oil, stearic acid and zinc oxide;
the functional auxiliary agent is an anti-aging agent, a plasticizer and a filler;
the reagent is the combination of vinyl ferrocene and ferric chloride;
s2, introducing steam for heating or directly heating, desulfurizing for 90min, stopping heating when the specified temperature and pressure are reached, keeping pressure for timing, stopping stirring after the specified pressure keeping time of the process is reached, opening an exhaust valve for exhausting, opening an auxiliary exhaust when the pressure is zero, exhausting residual gas, and then opening a tank opening for discharging;
heating to 200 deg.C, increasing the pressure in the desulfurizing tank from normal pressure to 1.5MPa at a pressurizing rate of 0.1MPa/min, and maintaining the pressure for 10 min; increasing the pressure in the desulfurizing tank to 2.2MPa at the pressurizing rate of 0.01MPa/min, and maintaining the pressure for 40 min;
and S3, conveying the rubber material into a quick cooling device, cooling and stacking.
Example 3:
a production process of flexible damping reclaimed rubber comprises the following steps:
step one, preparing 70% of benzaldehyde, 20% of benzoic acid and 10% of N-methyl pyrrolidone into a water-based paint remover with the concentration of 400g/L, injecting the water-based paint remover into the inner cavity of a sealed tank 1, starting a motor 32, driving a first rotary drum 33, a second rotary drum 36, a first supporting rod 34, a second supporting rod 37 and a stirring blade 35 to rotate and stir together by the motor 32, putting the recovered old rubber product into the sealed tank 1, closing a cover body 2, stirring and washing the old rubber product in the inner cavity of the sealed tank 1 by the stirring blade 35, putting the stirred and washed old rubber product into a crusher for crushing, and putting the crushed old rubber product into a sieving machine for sieving;
step two, further crushing and screening the screened rubber product particles with the diameter larger than 0.16mm, finally respectively using a 45-mesh screen to obtain coarse rubber product particles with the mu f of 3.7-3.1 and a 70-80-mesh screen to obtain fine rubber product particles with the mu f of 2.2-1.6, respectively washing the coarse rubber product particles and the fine rubber product particles, respectively washing the water-based paint remover on the surface of the refined waste, drying, grinding the coarse rubber product particles into powder, and mixing the powder with the fine rubber product particles to be used as a raw material;
step three, desulfurization → kneading → filtration → refining → molding;
and (3) desulfurizing by using a dynamic desulfurizing tank:
s1, firstly starting stirring, and then adding the raw materials, the softening agent, the filling agent and the activating agent;
the weight parts of the raw materials, the softening agent, the functional auxiliary agent and the activating agent are as follows: 900 parts of raw materials, 130 parts of softeners, 45 parts of fillers and 30 parts of activators;
the softener is a combination of vegetable oil, rosin, resin auxiliary agent, paraffin oil, stearic acid and zinc oxide;
the functional auxiliary agent is the combination of an anti-aging agent, a plasticizer and a filler;
the oxidant is the combination of zinc stearate, sodium stearate, vinyl ferrocene and ferric chloride;
s2, introducing steam for heating or directly heating, desulfurizing for 80min, stopping heating when the specified temperature and pressure are reached, keeping pressure for timing, stopping stirring after the specified pressure keeping time of the process is reached, opening an exhaust valve for exhausting, opening an auxiliary exhaust when the pressure is zero, exhausting residual gas, and then opening a tank opening for discharging;
heating to 190 deg.C, increasing the pressure in the desulfurizing tank from normal pressure to 1.2MPa at a pressurizing rate of 0.1MPa/min, and maintaining the pressure for 9 min; increasing the pressure in the desulfurizing tank to 2.1MPa at a pressurizing rate of 0.01MPa/min, and maintaining the pressure for 38 min;
and S3, conveying the rubber material into a quick cooling device, cooling and stacking.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The production process of the flexible damping reclaimed rubber is characterized by comprising the following steps of:
a sealed can (1);
the cover body (2) is arranged at the top end of the sealing can (1) through a hinge;
the stirring mechanism (3) is assembled in the inner cavity of the sealed tank (1);
the stirring mechanism (3) comprises:
the motor (31) is installed on the left side of the outer wall of the sealing tank (1) through a screw;
one end of the connecting rod (32) is locked and fixed at the output end of the right surface of the motor (31) through a coupler, and the other end of the connecting rod is installed on the right side of the inner wall of the sealing tank (1) through a bearing;
a first rotating cylinder (33) which is in interference fit with the middle position of the outer wall of the connecting rod (32);
a plurality of first supporting rods (34), one ends of which are respectively fixedly arranged on the outer wall of the first rotary drum (33);
a plurality of stirring blades (35), one side of which is fixedly arranged at the other end of the first supporting rod (34);
a plurality of second rotating drums (36) which are respectively in interference fit with the left side and the right side of the outer wall of the connecting rod (32);
the two ends of the second supporting rod (37) are respectively fixedly connected with the outer wall of the second rotary drum (36) and the other side of the stirring blade (35);
step one, taking back the collected old rubber product for primary crushing, injecting a water-based paint remover into an inner cavity of the sealed tank (1), putting the primarily crushed old rubber product into a sealed pool for stirring and washing, putting the washed old rubber product into a crusher for further crushing, and then putting the crushed old rubber product into a screening machine for screening;
step two, further crushing and screening the screened rubber product particles with the diameter larger than 0.16mm to finally obtain coarse rubber product particles with the mu f of 3.7-3.1 and fine rubber product particles with the mu f of 2.2-1.6, respectively washing the coarse rubber product particles and the fine rubber product particles, drying, grinding the coarse rubber product particles into powder, and mixing the powder with the fine rubber product particles to be used as a raw material;
step three, desulfurization → kneading → filtration → refining → molding.
2. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: the concentration of the aqueous paint remover in the first step is 400-450 g/L, and the aqueous paint remover is formed by combining one or more of benzyl alcohol, benzaldehyde, benzoic acid and N-methyl pyrrolidone.
3. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: in the third step, the desulfurization is carried out by using a dynamic desulfurization tank:
s1, firstly starting stirring, and then adding the raw materials, the softening agent, the filling agent and the activating agent;
s2, introducing steam for heating or directly heating, desulfurizing for 75-90min, stopping heating when the specified temperature and pressure are reached, keeping pressure for timing, stopping stirring after the specified pressure keeping time of the process is reached, opening an exhaust valve for exhausting, opening an auxiliary exhaust when the pressure is zero, exhausting residual gas, and then opening a tank opening for discharging;
and S3, conveying the rubber material into a quick cooling device, cooling and stacking.
4. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: in S2, the raw materials, the softening agent, the functional assistant and the activator are as follows in parts by weight: 800-1000 parts of raw material, 120-150 parts of softener, 30-50 parts of filler and 20-50 parts of activator.
5. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: the softener is a combination of vegetable oil, rosin, a resin additive, paraffin oil, stearic acid and zinc oxide.
6. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: the functional auxiliary agent is a plurality of combinations of age resisters, plasticizers and fillers.
7. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: the activating agent is one or a combination of zinc stearate, sodium stearate, vinyl ferrocene and ferric chloride.
8. The production process of the flexible damping reclaimed rubber according to claim 1, wherein the production process comprises the following steps: in S2, heating to 180-200 ℃, increasing the pressure in the desulfurization tank from normal pressure to 1-1.5MPa at a pressurization rate of 0.1MPa/min, and maintaining the pressure for 8-10 min; increasing the pressure in the desulfurizing tank to 2-2.2MPa at a pressurizing rate of 0.01MPa/min, and maintaining the pressure for 30-40 min.
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| CN202210807226.7A CN115028911A (en) | 2022-07-08 | 2022-07-08 | Production process of flexible damping reclaimed rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115625824A (en) * | 2022-11-02 | 2023-01-20 | 江苏三元轮胎有限公司 | Normal-pressure desulfurization equipment for waste rubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206935267U (en) * | 2017-06-30 | 2018-01-30 | 福建今古通生物科技有限公司 | A kind of trough type mixing machine |
| CN108912431A (en) * | 2018-06-08 | 2018-11-30 | 四川省隆昌海燕橡胶有限公司 | A kind of flexible damping technique for regenerated rubber |
| CN114589840A (en) * | 2022-03-30 | 2022-06-07 | 江苏古迪芙新材料科技有限公司 | Preparation method for recycling waste rubber |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206935267U (en) * | 2017-06-30 | 2018-01-30 | 福建今古通生物科技有限公司 | A kind of trough type mixing machine |
| CN108912431A (en) * | 2018-06-08 | 2018-11-30 | 四川省隆昌海燕橡胶有限公司 | A kind of flexible damping technique for regenerated rubber |
| CN114589840A (en) * | 2022-03-30 | 2022-06-07 | 江苏古迪芙新材料科技有限公司 | Preparation method for recycling waste rubber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115625824A (en) * | 2022-11-02 | 2023-01-20 | 江苏三元轮胎有限公司 | Normal-pressure desulfurization equipment for waste rubber |
| CN115625824B (en) * | 2022-11-02 | 2023-10-13 | 江苏三元轮胎有限公司 | Waste rubber normal pressure desulfurization equipment |
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