CN110437499B - High-performance regenerated rubber and preparation method thereof - Google Patents
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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
- C08J11/16—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 inorganic material
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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
- C08J11/18—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 organic material
- C08J11/28—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 organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
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- 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
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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
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Abstract
The invention belongs to the field of waste rubber recycling and discloses high-performance regenerated rubber and a preparation method thereof. The preparation raw materials of the high-performance regenerated rubber comprise rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent, wherein the molecular sieve is a Y-type molecular sieve. According to the invention, through the addition of the modified molecular sieve anti-vulcanizing agent, the product subjected to 120-phase desulfurization at the temperature of 2.0-2.2MPa and 260 ℃ is subjected to Mooney viscosity characterization and mechanical property characterization of a universal tester, and the product performance is equivalent to that of the product prepared by adding 1 part of activating agent under the conditions of no modified molecular sieve, the desulfurization temperature time of 150 minutes, the desulfurization pressure of 2.6MPa and the desulfurization temperature of 400 ℃.
Description
Technical Field
The invention relates to the field of waste rubber recycling, in particular to high-performance regenerated rubber and a preparation method thereof.
Background
On one hand, rubber cannot be naturally degraded after being discarded for a long time and is black pollution which is more difficult to treat than plastic pollution (white pollution), and on the other hand, China and even the whole world are in an environment with shortage of rubber resources. Therefore, the development and utilization of the reclaimed rubber are of far-reaching significance.
The regeneration of waste rubber can adopt steam method, cooking method, physical method and chemical method, but at present the most effective method is the chemical method, mainly utilizes chemical auxiliary agent, such as organic disulfide mercaptan and alkali metal, etc., under the condition of raising temperature and with the help of mechanical force action, the cross-linked bond of rubber is destroyed, so as to achieve the purpose of regeneration. In the chemical regeneration process, a large amount of chemicals are used, which are almost offensive and harmful at high temperature and high pressure, and the desulfurization time is long, limiting the production efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides high-performance regenerated rubber and a preparation method thereof.
In order to achieve the purpose of the invention, the preparation raw materials of the high-performance regenerated rubber comprise rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent, wherein the molecular sieve is a Y-type molecular sieve.
The A-type molecular sieve is added in the production process of the regenerated rubber at present, but the addition is to increase the strength of the regenerated rubber, and is not used as an anti-vulcanization assistant to reduce the temperature, pressure and desulfurization time of rubber desulfurization. Moreover, the inventor of the invention finds through experiments that the A-type molecular sieve is not suitable for the process of the invention, and the A-type molecular sieve is used for carrying out swelling permeation reaction in a reaction kettle, so that the process is complex and tedious.
Further in accordance with some embodiments of the present invention, the Y-type molecular sieve is selected from NaY, CH3I—AgBF4+Sn-CeMoOx/Y、CeO2+Co-Mo/Y、CH3I—AgBF4+Co-Mo/Y、CeO2One or more of + Sn-CeMoOx/Y molecular sieves; preferably, the NaY molecular sieve has a Si: al is 5.2, CH3I—AgBF4CH in + Sn-CeMoOx/Y molecular sieve3I—AgBF4：Sn-CeMoOx：Y=10:2:100、CeO2CeO in + Co-Mo/Y molecular sieve2：Co-Mo：Y=5:5:100，CH3I—AgBF4+ CH in Co-Mo/Y molecular sieve3I—AgBF4：Co-Mo：Y=10:2:100、CeO2CeO in + Sn-CeMoOx/Y molecular sieve2: Sn-CeMoOx: y =5:5:100, said ratios all being molar ratios.
Preferably, the raw materials for preparing the high-performance regenerated rubber comprise, by weight, 90-110 parts of rubber powder, 10-20 parts of a softener, 8-12 parts of R1 resin, 0.5-1.5 parts of a molecular sieve and 0.5-1.5 parts of an activator.
More preferably, the preparation raw materials of the high-performance regenerated rubber comprise, by weight, 100 parts of rubber powder, 10 parts of a softener, 10 parts of R1 resin, 1 part of a molecular sieve and 1 part of an activator.
Further, the softening agent is cottonseed oil or pine tar.
Further, the activator is 2, 2-disulfide bis (6-tert-butyl-p-phenol) (i.e., 420 activator), 2-disulfide (4, 6-di-tert-butyl-p-phenol) (i.e., 480 activator), or 980 activator. The 420, 480, 980 activators are commercially available from Union, Dow chemical, Inc.
The activating agent has strong reducibility, and can break and open the chain of the-S-bond in the waste rubber to obtain a high-performance rubber product. SO produced during desulfurization2The activating agent is inactivated, and a large amount of activating agent is required to be added in the production process, so that the production cost is increased, and the environmental pollution is also caused. The invention reduces the temperature, pressure and desulfurization time of rubber desulfurization by adding the Y-type molecular sieve as the activator anti-vulcanization auxiliary agent, thereby greatly reducing the use of the activator and reducing the environmental pollution.
Furthermore, the R1 resin is prepared by taking a byproduct C9 of an ethylene device as a raw material, intercepting and separating the raw material and carrying out thermal polymerization production. The R1 resin is a yellow-green to dark-brown granular or flaky solid commercially available from boston corporation.
Further, the rubber powder is 30-40 mesh rubber powder.
Further, the preparation method of the rubber powder comprises the steps of crushing waste tires, magnetically separating metal impurities, and screening fiber impurities by vibration to obtain fine powder of 30-40 meshes.
Further, the preparation method of the high-performance regenerated rubber adopts a closed-loop temperature control desulfurization process (namely, a microcomputer program is set to automatically control time, pressure, temperature and stirring), rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent are sequentially added into a regeneration desulfurization tank, the rubber powder is condensed to below 50 ℃ after desulfurization is carried out for 120 plus 150 minutes at the temperature of 2.0-2.2MPa and 250 plus 260 ℃, the rubber sheet is refined at 60 ℃, the rubber sheet is milled at 65 ℃, then impurities in the rubber sheet are filtered, and the high-performance regenerated rubber is obtained after refining at 65 ℃.
According to the invention, through testing the thermal weight loss curve of the waste rubber, the sample only has a small weight loss amount in the temperature range from normal temperature to about 350 ℃, and the quality of the sample begins to sharply decrease after the temperature is continuously increased and tends to be stable after the temperature is 450 ℃. It is therefore presumed that at < 350 ℃, the network structure of the molecules in the rubber is relatively little destroyed, and that the molecular chain breakage is relatively limited because part of the mass loss is due to the vaporization of the small-molecule auxiliary at high temperatures. When the temperature exceeds 350 ℃, the quality of the sample is reduced sharply, which indicates that the macromolecular main chain in the rubber begins to be broken in a large scale.
The main step of rubber regeneration is a desulfurization process, i.e., the crosslinking network points mainly comprising sulfur bonds are cut off. In the network structure of the rubber molecule, most of the sulfur bonds exist in the form of C-S-C or C-S-S-C, and the main chain of the rubber molecule is mainly in the form of C-C bonds. Wherein the bond energies of S-S, C-S and C-C are, in order, 213 KJ/mol, 259 KJ/mol and 347KJ/mol, so that it can be seen that the bond energies are, in order, S-S < C-C. The thermal weight loss curve can analyze that the fracture of the C-C bond on the main chain of the molecule in the rubber is mainly over 350 ℃, so that the upper limit of the desulfurization temperature is not more than 350 ℃ to avoid the fracture of the main chain of the molecule in the rubber.
According to the invention, through the addition of the modified molecular sieve anti-vulcanizing agent, the product subjected to 120-phase desulfurization at the temperature of 2.0-2.2MPa and 260 ℃ is subjected to Mooney viscosity characterization and mechanical property characterization of a universal tester, and the product performance is equivalent to that of the product prepared by adding 1 part of activating agent under the conditions of no modified molecular sieve, the desulfurization temperature time of 150 minutes, the desulfurization pressure of 2.6MPa and the desulfurization temperature of 400 ℃.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. It is to be understood that the following description is only illustrative of the present invention and is not to be construed as limiting the present invention.
As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," "contains" or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The indefinite articles "a" and "an" preceding an element or component of the invention are used without limitation to the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the number clearly indicates the singular.
Technical features related to embodiments of the present inventionCan be combined with each other as long as they do not conflict with each other. In various embodiments the NaY molecular sieve has an Si: al is 5.2, CH3I—AgBF4CH in + Sn-CeMoOx/Y molecular sieve3I—AgBF4：Sn-CeMoOx：Y=10:2:100、CeO2CeO in + Co-Mo/Y molecular sieve2：Co-Mo：Y=5:5:100，CH3I—AgBF4+ CH in Co-Mo/Y molecular sieve3I—AgBF4：Co-Mo：Y=10:2:100、CeO2CeO in + Sn-CeMoOx/Y molecular sieve2: Sn-CeMoOx: y =5:5:100, said ratios all being molar ratios.
Example 1
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and CH3I—AgBF4+ Sn-CeMoOx/Y1 parts, 1 part of type 420 activator. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 2
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of cottonseed oil softener, 10 parts of R1 resin, and CH3I—AgBF4+ Sn-CeMoOx/Y1 parts, 1 part of type 420 activator. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 3
In this example, the raw material for producing the high-performance reclaimed rubber comprises (1) 100 parts of rubber powder,10 parts of cottonseed oil softener, 10 parts of R1 resin and CH3I—AgBF4+ Sn-CeMoOx/Y1 parts, and 480 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 4
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and CH3I—AgBF4+ Sn-CeMoOx/Y1 parts, and 480 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 5
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and CH3I—AgBF4+ Sn-CeMoOx/Y1 parts, 980 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 6
In this example, the raw materials for preparing the high-performance reclaimed rubber comprise 100 parts of rubber powder and a pine tar softener10 parts of R1 resin, 10 parts of CeO2+ Co-Mo/Y1 parts, 980 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 7
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and CH3I—AgBF4+ Co-Mo/Y1 parts, and 980 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Example 8
In this example, the raw materials for preparing the high performance recycled rubber comprise 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and CeO2+ Sn-CeMoOx/Y1 parts, and 980 type activator 1 part. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Comparative example 1
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, and 1 part of 420 type activator. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Comparative example 2
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 4 parts of a regeneration activator diethylenetriamine, 8 parts of an aromatic (C9) petroleum resin softener, and 4 parts of a 3A type molecular sieve adsorbent. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Comparative example 3
In this example, the raw materials for preparing the high-performance regenerated rubber include 100 parts of rubber powder, 10 parts of pine tar softener, 10 parts of R1 resin, 4 parts of 3A type molecular sieve adsorbent, and 1 part of 420 type activator. The preparation method comprises the following steps: the method comprises the steps of adopting a closed-loop temperature control desulfurization process (namely, a microcomputer program sets automatic control time, pressure, temperature and stirring), sequentially adding rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, desulfurizing for 150 minutes at 2.2MPa and 260 ℃, condensing the rubber powder to be below 50 ℃, refining rubber sheets at 60 ℃, kneading the rubber sheets at 65 ℃, filtering impurities in the rubber sheets, and refining at 65 ℃ to obtain the rubber sheet.
Effects of the embodiment
The properties of the reclaimed rubber obtained in the above examples and comparative examples were compared by Mooney viscosity characterization and mechanical property characterization of a universal tester, and the results are as follows.
TABLE 1 Mooney viscosity measurement results
| Test item | Maximum Mooney viscosity number | Minimum Mooney viscosity value | ML（1+4） |
| Example 1 | 55.47 | 14.14 | 30.61 |
| Example 2 | 62.43 | 8.83 | 23.11 |
| Example 3 | 52.14 | 4.06 | 17.02 |
| Example 4 | 63.61 | 22.27 | 40.61 |
| Example 5 | 66.07 | 18.33 | 45.07 |
| Example 6 | 41.17 | 17.57 | 32.14 |
| Example 7 | 55.89 | 14.35 | 30.21 |
| Example 8 | 60.12 | 10.83 | 20.11 |
| Comparative example 1 | 72.01 | 6.06 | 15.02 |
| Comparative example 2 | 80.03 | 29.08 | 52.22 |
| Comparative example 3 | 81.02 | 29.06 | 50.03 |
TABLE 2 test results of physical and mechanical properties
| Test item | Tensile strength/MPa | Elongation at break/%) | Tear strength/%) | Stress at definite elongation/MPa | Shore hardness |
| Example 1 | 7.7 | 126 | 17.9 | 2.5 | 60 |
| Example 2 | 7.8 | 149 | 16.9 | 1.8 | 62 |
| Example 3 | 8.4 | 120 | 15.7 | 4.6 | 60 |
| Example 4 | 8.7 | 134 | 23.3 | 2.2 | 61.5 |
| Example 5 | 8.0 | 105 | 19.3 | 3.6 | 73 |
| Example 6 | 8.2 | 150 | 20.0 | 1.7 | 59 |
| Example 7 | 8.1 | 134 | 14.6 | 1.4 | 52.5 |
| Example 8 | 8.0 | 148 | 16.0 | 1.1 | 49.5 |
| Comparative example 1 | 7.4 | 102 | 12.9 | 2.5 | 64 |
| Comparative example 2 | 7.1 | 100 | 11.8 | 2.3 | 62 |
| Comparative example 3 | 7.2 | 105 | 12.6 | 2.2 | 63 |
It will be understood by those skilled in the art that the foregoing is merely exemplary of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The high-performance regenerated rubber is characterized in that raw materials for preparing the high-performance regenerated rubber comprise rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent, wherein the molecular sieve is a Y-type molecular sieve; the Y-type molecular sieve is selected from NaY and CH3I—AgBF4+Sn-CeMoOx/Y、CeO2+Co-Mo/Y、CH3I—AgBF4+Co-Mo/Y、CeO2One or more of + Sn-CeMoOx/Y molecular sieves; si in the NaY molecular sieve: al is 5.2, CH3I—AgBF4+ CH in Sn-CeMoOx/Y molecular sieve3I—AgBF4：Sn-CeMoOx：Y＝10:2:100、CeO2CeO in + Co-Mo/Y molecular sieve2：Co-Mo：Y＝5:5:100，CH3I—AgBF4+ CH in Co-Mo/Y molecular sieve3I—AgBF4：Co-Mo：Y＝10:2:100、CeO2CeO in + Sn-CeMoOx/Y molecular sieve2：Sn-CeMoOx：Y＝5:5:100, and the ratios are all molar ratios.
2. The high-performance regenerated rubber as claimed in claim 1, wherein the raw materials for preparing the high-performance regenerated rubber comprise, by weight, 90-110 parts of rubber powder, 10-20 parts of softener, 8-12 parts of R1 resin, 0.5-1.5 parts of molecular sieve and 0.5-1.5 parts of activator.
3. The high-performance regenerated rubber as claimed in claim 2, wherein the raw materials for preparing the high-performance regenerated rubber comprise, by weight, 100 parts of rubber powder, 10 parts of softener, 10 parts of R1 resin, 1 part of molecular sieve and 1 part of activator.
4. The high performance reclaimed rubber of claim 1, wherein the softening agent is cottonseed oil or pine tar.
5. The high performance reclaimed rubber of claim 1, wherein the activator is 2, 2-bis (6-tert-butyl-p-phenol) disulfide, 2-disulfide (4, 6-di-tert-butyl-p-phenol), or 980 activator.
6. The high-performance reclaimed rubber according to claim 1, wherein the R1 resin is prepared by cutting and separating a byproduct C9 of an ethylene plant and performing thermal polymerization.
7. The high-performance reclaimed rubber according to claim 1, wherein the rubber powder is 30 to 40 mesh rubber powder.
8. The high-performance reclaimed rubber according to claim 1, wherein the rubber powder is prepared by pulverizing waste tires, magnetically separating metal impurities, and vibrating to separate fiber impurities, and the fine powder is obtained by sieving with 30-40 mesh sieve.
9. The method for preparing high-performance regenerated rubber as claimed in any one of claims 1 to 8, characterized in that the preparation method of the high-performance regenerated rubber is to adopt a closed-loop temperature control desulfurization process, sequentially add rubber powder, a softening agent, R1 resin, a molecular sieve and an activating agent into a regeneration desulfurization tank, condense the rubber powder to below 50 ℃ after desulfurization is carried out for 120-150 minutes at the temperature of 250-260 ℃ under the pressure of 2.0-2.2MPa, refine the rubber sheet at 60 ℃, knead the rubber sheet at 65 ℃, filter impurities in the rubber sheet, and refine the rubber sheet at 65 ℃ to obtain the high-performance regenerated rubber.
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| CN110437499B true CN110437499B (en) | 2022-07-15 |
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| CN102702592A (en) * | 2012-05-03 | 2012-10-03 | 湖北工业大学 | High-performance regenerated rubber and preparation method thereof |
| CN104194036A (en) * | 2014-08-28 | 2014-12-10 | 中胶橡胶资源再生（青岛）有限公司 | Regenerant for regenerated rubber and preparation method of regenerant |
| CN105344323A (en) * | 2015-12-07 | 2016-02-24 | 上海绿强新材料有限公司 | Adsorbent for deep removal of organic sulfide and preparation method and application thereof |
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| CN102702592A (en) * | 2012-05-03 | 2012-10-03 | 湖北工业大学 | High-performance regenerated rubber and preparation method thereof |
| CN104194036A (en) * | 2014-08-28 | 2014-12-10 | 中胶橡胶资源再生（青岛）有限公司 | Regenerant for regenerated rubber and preparation method of regenerant |
| CN105344323A (en) * | 2015-12-07 | 2016-02-24 | 上海绿强新材料有限公司 | Adsorbent for deep removal of organic sulfide and preparation method and application thereof |
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