CN104163937A - Preparation method for promoting waste rubber reclaiming by using ionic liquid - Google Patents
Preparation method for promoting waste rubber reclaiming by using ionic liquid Download PDFInfo
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- CN104163937A CN104163937A CN201410173285.9A CN201410173285A CN104163937A CN 104163937 A CN104163937 A CN 104163937A CN 201410173285 A CN201410173285 A CN 201410173285A CN 104163937 A CN104163937 A CN 104163937A
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- China
- Prior art keywords
- rubber
- ionic liquid
- waste
- waste rubber
- desulfurization
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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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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a preparation method for promoting waste rubber reclaiming by using ionic liquid. The method is used in waste rubber powder desulfurization for preparing reclaimed rubber. According to the invention, waste rubber powder is uniformly mixed with ionic liquid, and pretreatment is finished; certain amounts of a softening agent and a desulfurization agent are added; under a low-temperature high-shearing effect of an extruder, rubber three-dimensional cross-linked network is damaged, and reclaimed rubber is obtained. The reclaimed rubber finished product has excellent performances. The reclaimed rubber has excellent indexes such as tensile strength and resilience value. The reclaimed rubber can partially replace natural rubber and synthetic rubber. In the pretreatment process, ionic liquid is added, such that system solubility can be effectively improved, a certain catalytic effect is provided for the desulfurization process, treatment time is reduced, and the dose amounts of the softening agent and the desulfurization amount are greatly reduced. Because ionic liquid is substantially non-volatile, no odor is produced during subsequent treatment processes. The ionic liquid is an environment-friendly additive.
Description
Technical field
The present invention has narrated a kind of preparation method of ionic liquid promotion regenerating waste or used rubber.
Technical background
China's Economic development is in recent years swift and violent, and rubber item application quantity increases huge, and the while, rubber scrap was also more and more, has caused huge waste because rubber item is aging.Junked tire is poisonous, harmful solid waste, has very strong heat impedance, anti-degradation property, imbed in ground 100 years also non-degradable.Handle waste old well, for making full use of renewable resource, break away from natural resources and lack, reduce environmental pollution, the living environment of improving the mankind is very important.
Waste rubber regeneration techniques is divided into two classes substantially, physics regeneration and chemical regeneration, and most physical methods can only be calculated a kind of crushing technology, and the rubber powder quality of making can not reach satisfied effect, and in recovery use procedure, utilising efficiency is not high.The regenerator using in chemical regeneration, normally poisonous and hazardous.Therefore, seeking a kind of environmentally friendly regenerator is the problem of needing at present solution badly.
Ionic liquid refers in room temperature or approaches under room temperature and presents liquid, the complete salt being made up of zwitterion, also referred to as low temperature molten salt.The vapour pressure of ionic liquid is very little, non-volatile, in using, storing, can not evaporate lost, can recycle, eliminate volatile organic compounds problem of environmental pollution, all show good dissolving power to inorganic in a large number with organic substance in addition, and there is the dual-use function of solvent and catalyzer, can be used as many chemical reaction solvents or catalytic activity carrier.Based on above-mentioned advantage, ionic liquid is applied in rubber regeneration industry, can effectively avoid environmental pollution, and the unusual dissolving power showing due to ionic liquid itself, can promote the solubility property of waste old desulfurization system, improve waste old organic efficiency.This research has no report at present.
Summary of the invention
The object of the present invention is to provide a kind of ionic liquid to promote the preparation method of regenerating waste or used rubber.
The present invention realizes by following measure:
Promote the preparation method of regenerating waste or used rubber with ionic liquid, after it is characterized in that waste rubber and ionic liquid to mix, add a certain amount of tenderizer and sweetening agent in stirrer, be added in screw extrusion press, after extruding, obtain reclaimed rubber.
The described preparation method with ionic liquid promotion regenerating waste or used rubber, is characterized in that waste rubber is the one in waste butyl rubber, useless ethylene-propylene rubber(EPR), scrap rubber footwear.
The described preparation method who promotes regenerating waste or used rubber with ionic liquid, is characterized in that tenderizer is one or more mixture of Stockholm tar, paraffin oil, rosin, and waste rubber and tenderizer weight ratio are 1:0.1-0.3.
The described preparation method with ionic liquid promotion regenerating waste or used rubber, is characterized in that ionic liquid is the one in [EMIM] Cl, [EMIM] Br, [BMIM] Cl, [BMIM] Br, and the weight ratio of waste rubber and ionic liquid is 1:0.5-2.0.
The described preparation method with ionic liquid promotion regenerating waste or used rubber, is characterized in that activator is the mixture of toluene, acetic acid and zinc chloride, and waste rubber and sweetening agent weight ratio are 1:0.5-3, and toluene, acetic acid and zinc chloride mass ratio are 20:4:1.
The described preparation method with ionic liquid promotion regenerating waste or used rubber, is characterized in that screw extrusion press is the one of single screw extrusion machine or twin screw extruder.
The preparation process of ionic liquid promotion regenerating waste or used rubber involved in the present invention as shown in Figure 1.
The reclaimed rubber end properties excellence that the present invention produces, tensile strength, rebound value index excellence, can partly substitute natural rubber and synthetic rubber.In preprocessing process, add ionic liquid, can with the solubility property that effectively improves system, sweetening process is had to certain katalysis, reduce the treatment time, and greatly reduce the consumption of tenderizer and sweetening agent.And because ionic liquid possesses substantially nonvolatile performance, substantially not producing peculiar smell in subsequent processes, is a kind of environmentally friendly additive, and the later stage can also recycle.
Brief description of the drawings
Fig. 1 is the preparation flow figure that ionic liquid of the present invention promotes regenerating waste or used rubber.
embodiment
For a better understanding of the present invention, describe by following instance:
Embodiment 1
Get 100 parts of 40 order junked tire inner tube of a tyre isoprene-isobutylene rubber rubber powders, add 100 parts of ionic liquid [EMIM] Cl, put into homogenizer and mix, rotating speed is 1000 r/min, and temperature is 85
oc, the time is 5 min.Add 15 parts of tenderizer Stockholm tars, add sweetening agent toluene 50g, acetic acid 10g, zinc chloride 2.5g, mixes completely, is dosed to twin screw extruder (D=71mm, L/D=32), and screw speed is 150 r/min, and extruder temperature is 80
oC, the time is 10 min.After shearing plasticizing, extrude and obtain reclaimed rubber finished product.End properties characterizes as follows:
| Mooney viscosity/ML 100 oC（1+4min） | 65 |
| Tensile strength/Mpa | 9.8 |
| Elongation at break/% | 380 |
Embodiment 2
Get 100 parts of 40 order junked tire inner tube of a tyre isoprene-isobutylene rubber rubber powders, add 100 parts of ionic liquid [BMIM] Cl, put into homogenizer and mix, rotating speed is 1000 r/min, and temperature is 85
oc, the time is 5 min.Add 20 parts of tenderizer paraffin oils, add sweetening agent toluene 50g, acetic acid 10g, zinc chloride 2.5g, mixes completely, is dosed to twin screw extruder (D=71mm, L/D=32), and screw speed is 150 r/min, and extruder temperature is 90
oC, the time is 10 min.After shearing plasticizing, extrude and obtain reclaimed rubber finished product.End properties characterizes as follows:
| Mooney viscosity/ML 100 oC（1+4min） | 60 |
| Tensile strength/Mpa | 7.8 |
| Elongation at break/% | 310 |
Claims (6)
1. promote the preparation method of regenerating waste or used rubber with ionic liquid, after it is characterized in that waste rubber and ionic liquid to mix, add a certain amount of tenderizer and sweetening agent in stirrer, be added in screw extrusion press, after extruding, obtain reclaimed rubber.
2. the method for claim 1, is characterized in that waste rubber is the one in waste butyl rubber, useless ethylene-propylene rubber(EPR), scrap rubber footwear.
3. the method for claim 1, is characterized in that tenderizer is one or more mixture of Stockholm tar, paraffin oil, rosin, and waste rubber and tenderizer weight ratio are 1:0.1-0.3.
4. the method for claim 1, is characterized in that ionic liquid is the one in [EMIM] Cl, [EMIM] Br, [BMIM] Cl, [BMIM] Br, and the weight ratio of waste rubber and ionic liquid is 1:0.5-2.0.
5. the method for claim 1, is characterized in that sweetening agent is the mixture of toluene, acetic acid and zinc chloride, and waste rubber and sweetening agent weight ratio are 1:1-3, and toluene, acetic acid and zinc chloride mass ratio are 20:4:1.
6. the method for claim 1, is characterized in that screw extrusion press is the one of single screw extrusion machine or twin screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173285.9A CN104163937A (en) | 2014-04-28 | 2014-04-28 | Preparation method for promoting waste rubber reclaiming by using ionic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173285.9A CN104163937A (en) | 2014-04-28 | 2014-04-28 | Preparation method for promoting waste rubber reclaiming by using ionic liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104163937A true CN104163937A (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410173285.9A Pending CN104163937A (en) | 2014-04-28 | 2014-04-28 | Preparation method for promoting waste rubber reclaiming by using ionic liquid |
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| CN (1) | CN104163937A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542817A (en) * | 2015-12-07 | 2016-05-04 | 安徽工业大学 | Method for preparing rubber powder from waste and old tires through thermal dissolution and depolymerization |
| CN106867022A (en) * | 2017-02-06 | 2017-06-20 | 成都新火环保科技有限公司 | A kind of scrap rubber regenerative agent and preparation method thereof |
| CN109535750A (en) * | 2018-12-03 | 2019-03-29 | 江苏东道交通科技集团有限公司 | A kind of rubber asphalt stabilizer and preparation method thereof |
| CN110283355A (en) * | 2019-07-23 | 2019-09-27 | 李可昕 | A kind of waste rubber desulfurizing agent and its application method |
-
2014
- 2014-04-28 CN CN201410173285.9A patent/CN104163937A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542817A (en) * | 2015-12-07 | 2016-05-04 | 安徽工业大学 | Method for preparing rubber powder from waste and old tires through thermal dissolution and depolymerization |
| CN105542817B (en) * | 2015-12-07 | 2018-03-02 | 安徽工业大学 | A kind of thermosol depolymerization junked tire is the method for rubber powder |
| CN106867022A (en) * | 2017-02-06 | 2017-06-20 | 成都新火环保科技有限公司 | A kind of scrap rubber regenerative agent and preparation method thereof |
| CN109535750A (en) * | 2018-12-03 | 2019-03-29 | 江苏东道交通科技集团有限公司 | A kind of rubber asphalt stabilizer and preparation method thereof |
| CN110283355A (en) * | 2019-07-23 | 2019-09-27 | 李可昕 | A kind of waste rubber desulfurizing agent and its application method |
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Application publication date: 20141126 |