CN114368083B - Mixing process for waste rubber products - Google Patents
Mixing process for waste rubber products Download PDFInfo
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- CN114368083B CN114368083B CN202110754040.5A CN202110754040A CN114368083B CN 114368083 B CN114368083 B CN 114368083B CN 202110754040 A CN202110754040 A CN 202110754040A CN 114368083 B CN114368083 B CN 114368083B
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- rubber
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- blocks
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- 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
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a mixing process of waste rubber products, which comprises the following steps: s1: cutting waste rubber products containing more than 40% of natural rubber into films in a rubber cutting machine and vulcanizing; crushing the vulcanized rubber sheet into powder and screening out rubber powder with fineness of 16-40 meshes; s2: preheating a certain amount of natural rubber blocks, and placing a certain amount of rubber powder and the preheated natural rubber blocks into an internal mixer together for plasticating for 20-25 minutes to form a mixed rubber material; s3: taking out the plasticated mixed sizing material from the internal mixer, cooling to room temperature, weighing and dividing into a plurality of mixed sizing blocks; putting a certain amount of mixed rubber blocks into an internal mixer again, and then putting a certain amount of styrene-butadiene rubber (1502) and butadiene rubber into the internal mixer according to the proportion of the mixed rubber blocks for plasticating for 3 minutes; the invention has simple operation and low cost, not only utilizes waste rubber products, but also reduces the consumption of natural rubber, and has no waste water and waste gas production and lower energy consumption.
Description
Technical Field
The invention relates to a mixing process of waste rubber products.
Background
In recent years, in order to solve the problem of pollution of increasingly serious waste rubber products, a method of incineration and deep burying is basically adopted in many countries, but atmospheric pollution and soil pollution can be caused, and the symptoms and the root causes are not treated; if the chemical method is adopted to desulfurize and remodel the waste rubber products, the problems that the waste water cannot be treated and the malodor drifts outwards are generated, the pollution degree is more serious, the energy consumption is higher, and the problem needs to be solved urgently.
Disclosure of Invention
Aiming at the current state of the art, the invention aims to provide the mixing process of the waste rubber product, which is simple to operate, low in cost, capable of utilizing the waste rubber product, reducing the consumption of natural rubber, free of waste water and waste gas, and low in energy consumption.
The technical scheme adopted for solving the technical problems is as follows: the mixing process of the waste rubber product is characterized by comprising the following steps of:
s1: cutting waste rubber products containing more than 40% of natural rubber into films in a rubber cutting machine and vulcanizing; crushing the vulcanized rubber sheet into powder and screening out rubber powder with fineness of 16-40 meshes;
s2: preheating a certain amount of natural rubber blocks, and placing a certain amount of rubber powder and the preheated natural rubber blocks into an internal mixer together for plasticating for 20-25 minutes to form a mixed rubber material;
s3: taking out the plasticated mixed sizing material from the internal mixer, cooling to room temperature, weighing and dividing into a plurality of mixed sizing blocks; putting a certain amount of mixed rubber blocks into an internal mixer again, and then putting a certain amount of styrene-butadiene rubber (1502) and butadiene rubber into the internal mixer according to the proportion of the mixed rubber blocks for plasticating for 3 minutes;
s4: adding indirect zinc oxide, stearic acid, an anti-aging agent, paraffin, vaseline, engine oil, high wear-resistant carbon black powder, light calcium, coumarone and an accelerator into an internal mixer and continuously plasticating for 7-9 minutes to form a mixed rubber material, taking out the mixed rubber material and cooling to room temperature;
s5: and (3) putting the cooled mixed rubber material into an internal mixer again, controlling the temperature at 80 ℃, adding a certain amount of sulfur powder, continuously plasticating for 3 minutes to complete vulcanization, taking out the vulcanized mixed rubber, cooling, discharging sheets and packaging.
Preferably, the vulcanization temperature in the step S1 is 150 ℃ and the vulcanization time is 8 minutes.
Preferably, the preheating temperature in the step S2 is 50 ℃ and the preheating time is 10 hours.
Preferably, the plasticating temperature in step S2 is 90 ℃.
Compared with the prior art, the invention has the advantages that: according to the invention, waste rubber products are prepared into vulcanized rubber powder and mixed into natural rubber according to a certain proportion, so that the consumption of the natural rubber is reduced, and as the natural rubber has high viscosity, extremely large mechanical force can be transmitted to effectively rub, stretch and shear the surface of the vulcanized rubber powder, so that the original rubber molecular chain of the vulcanized rubber powder can be cut off and new free radical active groups can be generated, and meanwhile, the mechanical force can activate natural rubber molecules, so that the vulcanized rubber powder and the natural rubber can react mutually and bond, and the vulcanized rubber powder is combined on the natural rubber molecules as an elastic filler to form mixed rubber; the invention has simple operation and low cost, not only utilizes waste rubber products, but also reduces the consumption of natural rubber, and has no waste water and waste gas, and lower energy consumption; in addition, the mixed rubber prepared by the invention has good performance and basically has no difference with natural rubber.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components thereof have been omitted.
A mixing process of waste rubber products comprises the following steps:
s1: cutting waste rubber products containing more than 40% of natural rubber into rubber sheets in a rubber cutting machine, and then delivering the rubber sheets into vulcanizing equipment for vulcanization, wherein the vulcanizing temperature is 150 ℃ and the vulcanizing time is 8 minutes; delivering the vulcanized rubber sheet into a rubber crusher to be crushed into rubber powder, and screening the rubber powder with fineness of 16-40 meshes by a filtering device;
s2: preheating a certain amount of natural rubber blocks at a preheating temperature of 50 ℃ for 10 hours; placing a certain amount of rubber powder and the preheated natural rubber blocks into an internal mixer for plasticating to form mixed rubber, wherein the plasticating temperature is 90 ℃ and the plasticating time is 20-25 minutes;
s3: taking out the plasticated mixed sizing material from the internal mixer, cooling to room temperature, weighing and dividing into a plurality of mixed sizing blocks; putting a certain amount of mixed rubber blocks into an internal mixer again, and then putting a certain amount of styrene-butadiene rubber (1502) and butadiene rubber into the internal mixer according to the proportion of the mixed rubber blocks for plasticating for 3 minutes;
s4: adding indirect zinc oxide, stearic acid, an anti-aging agent, paraffin, vaseline, engine oil, high wear-resistant carbon black powder, light calcium, coumarone and an accelerator into an internal mixer and continuously plasticating for 7-9 minutes to form a mixed rubber material, taking out the mixed rubber material and cooling to room temperature;
s5: and (3) putting the cooled mixed rubber material into an internal mixer again, controlling the temperature at 80 ℃, adding a certain amount of sulfur powder, continuously plasticating for 3 minutes to complete vulcanization, taking out the vulcanized mixed rubber, cooling, discharging sheets and packaging.
The same amounts of the compound and natural rubber were subjected to a tensile test to compare the properties of the two, and the performance parameters are shown in Table 1:
TABLE 1
According to the invention, waste rubber products are prepared into vulcanized rubber powder and mixed into natural rubber according to a certain proportion, so that the consumption of the natural rubber is reduced, and as the natural rubber has high viscosity, extremely large mechanical force can be transmitted to effectively rub, stretch and shear the surface of the vulcanized rubber powder, so that the original rubber molecular chain of the vulcanized rubber powder can be cut off and new free radical active groups can be generated, and meanwhile, the mechanical force can activate natural rubber molecules, so that the vulcanized rubber powder and the natural rubber can react mutually and bond, and the vulcanized rubber powder is combined on the natural rubber molecules as an elastic filler to form mixed rubber; the invention has simple operation and low cost, not only utilizes waste rubber products, but also reduces the consumption of natural rubber, and has no waste water and waste gas, and lower energy consumption; in addition, the mixed rubber prepared by the invention has good performance and basically has no difference with natural rubber.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; while the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications may be made to the techniques described in the foregoing embodiments, or that certain features may be substituted for those illustrated therein; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The mixing process of the waste rubber product is characterized by comprising the following steps of:
s1: cutting waste rubber products containing more than 40% of natural rubber into films in a rubber cutting machine and vulcanizing; crushing the vulcanized rubber sheet into powder and screening out rubber powder with fineness of 16-40 meshes;
s2: preheating a certain amount of natural rubber blocks, and placing a certain amount of rubber powder and the preheated natural rubber blocks into an internal mixer together for plasticating for 20-25 minutes to form a mixed rubber material;
s3: taking out the plasticated mixed sizing material from the internal mixer, cooling to room temperature, weighing and dividing into a plurality of mixed sizing blocks; putting a certain amount of mixed rubber blocks into an internal mixer again, and then putting a certain amount of styrene-butadiene rubber 1502 and butadiene rubber into the internal mixer according to the proportion of the mixed rubber blocks for plasticating for 3 minutes;
s4: adding indirect zinc oxide, stearic acid, an anti-aging agent, paraffin, vaseline, engine oil, high wear-resistant carbon black powder, light calcium, coumarone and an accelerator into an internal mixer and continuously plasticating for 7-9 minutes to form a mixed rubber material, taking out the mixed rubber material and cooling to room temperature;
s5: and (3) putting the cooled mixed rubber material into an internal mixer again, controlling the temperature at 80 ℃, adding a certain amount of sulfur powder, continuously plasticating for 3 minutes to complete vulcanization, taking out the vulcanized mixed rubber, cooling, discharging sheets and packaging.
2. The process for mixing waste rubber products according to claim 1, wherein the vulcanization temperature in the step S1 is 150 ℃ and the vulcanization time is 8 minutes.
3. The process for mixing waste rubber products according to claim 1, wherein the preheating temperature in the step S2 is 50 ℃ and the preheating time is 10 hours.
4. The process for mixing waste rubber products according to claim 1, wherein the plasticating temperature in the step S2 is 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754040.5A CN114368083B (en) | 2021-07-04 | 2021-07-04 | Mixing process for waste rubber products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754040.5A CN114368083B (en) | 2021-07-04 | 2021-07-04 | Mixing process for waste rubber products |
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| CN114368083A CN114368083A (en) | 2022-04-19 |
| CN114368083B true CN114368083B (en) | 2023-07-14 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460769A (en) * | 1965-07-20 | 1969-08-12 | Herbert Alfred Merges | Method and apparatus for reclaiming rubber scrap |
| AU7379394A (en) * | 1993-08-05 | 1995-02-28 | Movetech, Inc. | Method for recycling tires |
| DE19607281A1 (en) * | 1996-02-27 | 1997-08-28 | Hannes Dr Ing Michael | Recycling of scrap rubber to produce polymer processing compound with TPE characteristics |
| CN1528815A (en) * | 2003-09-29 | 2004-09-15 | 华南理工大学 | In situ modified waste rubber powder composite material and preparing method thereof |
| JP2005068243A (en) * | 2003-08-21 | 2005-03-17 | Honda Motor Co Ltd | Reclaimed rubber |
| JP2007153955A (en) * | 2005-12-01 | 2007-06-21 | Sumitomo Rubber Ind Ltd | Rubber composition |
| GB2446592A (en) * | 2007-02-16 | 2008-08-20 | Polymer Recyclers Ltd | Rubber recycling |
| CN101696285A (en) * | 2009-09-30 | 2010-04-21 | 徐州工业职业技术学院 | New method for activating and recycling tyre waste rubber powder |
| JP2010260208A (en) * | 2009-04-30 | 2010-11-18 | Bridgestone Corp | Method and apparatus for manufacturing finely crushed rubber and rubber composition |
| EP2957406A1 (en) * | 2014-06-16 | 2015-12-23 | Michael Earls | Method of manufacturing rubber reclaim |
-
2021
- 2021-07-04 CN CN202110754040.5A patent/CN114368083B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460769A (en) * | 1965-07-20 | 1969-08-12 | Herbert Alfred Merges | Method and apparatus for reclaiming rubber scrap |
| AU7379394A (en) * | 1993-08-05 | 1995-02-28 | Movetech, Inc. | Method for recycling tires |
| DE19607281A1 (en) * | 1996-02-27 | 1997-08-28 | Hannes Dr Ing Michael | Recycling of scrap rubber to produce polymer processing compound with TPE characteristics |
| JP2005068243A (en) * | 2003-08-21 | 2005-03-17 | Honda Motor Co Ltd | Reclaimed rubber |
| CN1528815A (en) * | 2003-09-29 | 2004-09-15 | 华南理工大学 | In situ modified waste rubber powder composite material and preparing method thereof |
| JP2007153955A (en) * | 2005-12-01 | 2007-06-21 | Sumitomo Rubber Ind Ltd | Rubber composition |
| GB2446592A (en) * | 2007-02-16 | 2008-08-20 | Polymer Recyclers Ltd | Rubber recycling |
| JP2010260208A (en) * | 2009-04-30 | 2010-11-18 | Bridgestone Corp | Method and apparatus for manufacturing finely crushed rubber and rubber composition |
| CN101696285A (en) * | 2009-09-30 | 2010-04-21 | 徐州工业职业技术学院 | New method for activating and recycling tyre waste rubber powder |
| EP2957406A1 (en) * | 2014-06-16 | 2015-12-23 | Michael Earls | Method of manufacturing rubber reclaim |
Non-Patent Citations (1)
| Title |
|---|
| 机械力化学改性胶粉及其与天然橡胶并用胶性能的研究;曾冬;吴俊青;刘俊亮;张明;田尧;毛秋;江建梁;陈璇;;橡胶工业(03);全文 * |
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| CN114368083A (en) | 2022-04-19 |
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