CN1060112C - Method for preparing super fine rubber powder from used rubber - Google Patents
Method for preparing super fine rubber powder from used rubber Download PDFInfo
- Publication number
- CN1060112C CN1060112C CN95110923A CN95110923A CN1060112C CN 1060112 C CN1060112 C CN 1060112C CN 95110923 A CN95110923 A CN 95110923A CN 95110923 A CN95110923 A CN 95110923A CN 1060112 C CN1060112 C CN 1060112C
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- CN
- China
- Prior art keywords
- powder
- rubber
- rubber powder
- rudder
- swelling agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The present invention relates to a method for preparing ultramicro fine rubber powder from waste and old rubber. After waste and old rubber is cut into rubber particles of 0.5 to 1.5mm, the rubber particles are impregnated with a non-polar organic swelling agent by 5 to 30 seconds, then the impregnated rubber particles are processed through grinding, drying and vortex separation to obtain ultramicro fine rudder powder with a grain diameter of 1 to 50 mu m, and the used swelling agent is toluene or xylene preferably. The diameter of the rudder powder preparepd with the method reaches less 10 mu m, and the surface of a powder particle presents a burr shape so that the rudder powder is easily combined with other materials. The rudder powder prepared with the method can be mixed with a green stock of a blending amount of 40% to 50 %, but does not lower the physical property of a machine for the rudder. The present invention has low preparation cost. Therefore, the present invention has wide application prospect on lowering the cost of a rubber product and developing new materials.
Description
The present invention relates to the method for preparing super fine rubber powder from used rubber, is a kind of processing and treating method with the waste old recycling.
As everyone knows, natural rubber and elastomeric cross-linked rubber cannot not be molten, the macromolecular material of indissoluble, recycle relatively difficulty, and therefore a large amount of waste rubber goods abandoneds are not only wasted resource, also serious environment pollution.At present, industrially developed country has developed waste old glue powder technology, sends rubber powder the fusion of back to rubber item factory again in green stock, can reduce the cost of rubber item, also can make an addition in material of construction or the pitch, to improve the performance on buildings or road surface.Known glue powder method has normal temperature crushing up and pulverize at low temperature method, promptly utilizes the mechanical shear stress of high speed roller, and continuous level cuts into fine powder with waste old under normal temperature or the low temperature at liquid nitrogen freezing.The former rubber powder particle diameter is generally at 300-1400 μ m, because particle diameter is bigger than normal, poor-performing can only reduce the doping level in the sizing material.Latter Ke Da 75-300 μ m, but owing to rubber is chilled to below the second-order transition temperature, so the vulcanized rubber powder of gained is level and smooth, is unfavorable for combining with other material, influences result of use.And the equal energy consumption height of above method, investment is big, the cost height.
The purpose of this invention is to provide a kind of method with the ultra-fine rubber powder of waste old system, it can make the ultra tiny rubber powder of high reactivity that particle diameter is 1-50 μ m, with the use properties of raising rubber powder, and the manufacturing cost of reduction rubber powder.
The inventive method is waste old to be crushed to particle diameter by the roller shearing reach 0.5-1.5mm, go into steeping vat, in organic swelling agent, flood 5-30 second, go into shredder and be finely ground to rubber powder, send into moisture eliminator and be heated to 40-50 ℃, volatilization removes and desolvates, and dry powder is sent into the ultra tiny rubber powder that cyclonic separator obtains 1-50 μ m, and said organic swelling agent can be one or more in toluene, the dimethylbenzene.
Above-mentioned from the steeping vat to the moisture eliminator between each operation material adopt worm conveyor to carry continuously, dried material adopts gas delivery to go into cyclonic separator, isolated ultra tiny rubber powder is sent into the finished product basin by air-flow.
Above-mentioned each process is carried out in closed environment, and the bloated agent of each operation evaporable recycles after condensation is converged in suction.
The present invention relaxes the network structure of waste old by the swelling agent dipping and is easy to grind, thereby can make ultra tiny rubber powder, one can reach powder below the 10 μ m, and the powder surface is the burr shape, be easy to combine with other material, thereby it is good to mix performance, when oozing consumption and reach 40-50%, its mechanical and physical performance is still near the properties of rubber that does not add rubber powder, and for reducing the rubber item cost, there is the utmost point application prospects development of new material aspect.The swelling agent toluene that this law adopts, dimethylbenzene are chemical industry solvent wide material sources commonly used, and price is low, and purity is not had strict demand yet.Rubber powder adopts closed system production, and swelling agent uses at system's internal recycle, and nothing leaks, non-environmental-pollution, and energy consumption is low, and equipment is simple, and production cost is lower than each class methods of prior art.
Further specify method embodiment of the present invention below in conjunction with accompanying drawing.
Accompanying drawing is the rubber powder production scheme of one embodiment of the invention.
As shown in the figure, waste old at first is ground into the micelle of 0.5-1.5mm through high speed roller mechanical shearing, send into continuously then in the airtight dimethylbenzene steeping vat 2, micelle is flooded by swelling agent dimethylbenzene in the operational process in groove with worm conveyor, micelle goes out groove after about 15 seconds, sent into by worm conveyor and to reenter shredder 3 ' fine grinding after shredder 3 corase grind and become fine powder, send into moisture eliminator 4 by worm conveyor again, 40-50 ℃ of down most dimethylbenzene volatilization, the thin rubber powder of exsiccant is sent into cyclonic separator 5 by the fan airflow suction, under the effect of swirling eddy, the rubber powder of big particle diameter sinks, and defeated back-mixing goes in the thick micelle again dipping and handles, and the micelle of fine grain size is suspended in top and is sent into basin 6 by fan airflow, carries out finished product packing by basin 6 lower end dischargings.Regulate the wind-force of cyclone cluster, can obtain the ultra tiny rubber powder of finished product of different-grain diameter, for example the following rubber powder of following rubber powder of 20 μ m or 50 μ m.In this example, shredder 3,3 ' reach moisture eliminator 4 to place confined chamber a and b respectively, evaporable dimethylbenzene all enters condenser 7 from confined chamber a, b and basin 6, is sent back to swelling agent basin 1 behind the water condensation and recycles.Condenser is got water coolant by pump 9 from tank 8 pumps, flows back to tank again after this water coolant and the swelling agent heat exchange.
Claims (2)
1. the method for preparing super fine rubber powder from used rubber, shear by roller earlier and be crushed to the micelle that particle diameter reaches 0.5～1.5mm, go into steeping vat, it is characterized in that dipping 5-30 second in organic swelling agent, go into shredder and be finely ground to rubber powder, send into moisture eliminator and be heated to 40-50 ℃ except that desolvating, dry powder is sent into the ultra tiny rubber powder that cyclonic separator obtains 1-50 μ m, said organic swelling agent is a toluene, in the dimethylbenzene one or more, each inter process material adopts worm conveyor to carry continuously from the steeping vat to the moisture eliminator, each operation is carried out in closed environment, and each operation evaporable swelling agent recycles after condensation is converged in suction.
2. the method for preparing super fine rubber powder from used rubber according to claim 1 is characterized in that dried material adopts air-flow to send into cyclonic separator, and isolated ultra tiny rubber powder is gone into the finished product basin by gas delivery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110923A CN1060112C (en) | 1995-01-27 | 1995-01-27 | Method for preparing super fine rubber powder from used rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95110923A CN1060112C (en) | 1995-01-27 | 1995-01-27 | Method for preparing super fine rubber powder from used rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1127693A CN1127693A (en) | 1996-07-31 |
| CN1060112C true CN1060112C (en) | 2001-01-03 |
Family
ID=5078252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95110923A Expired - Fee Related CN1060112C (en) | 1995-01-27 | 1995-01-27 | Method for preparing super fine rubber powder from used rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060112C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010942A1 (en) * | 1999-08-05 | 2001-02-15 | Li Xing | A process for producing superfine rubber powder by using waste rubber |
| US6354523B1 (en) | 2000-04-04 | 2002-03-12 | Yangsheng Liu | Method and apparatus for recycling rubber |
| US6569977B1 (en) | 2000-04-04 | 2003-05-27 | Yangsheng Liu | Reagents for swelling rubber and method of using |
| CN102146654B (en) * | 2011-02-18 | 2012-10-03 | 刘廷国 | Plasticized tire rubber block pulverizing and stripping machine |
| CN102975310A (en) * | 2012-11-14 | 2013-03-20 | 上海华亿通实业有限公司 | Waste rubber particle ultrafine grinding production method |
| FR3060591A1 (en) * | 2016-12-20 | 2018-06-22 | Compagnie Generale Des Etablissements Michelin | RUBBER COMPOSITION COMPRISING A SPECIFIC RUBBER POWDER |
| CN108164727A (en) * | 2017-12-27 | 2018-06-15 | 山东国大黄金股份有限公司 | A kind of mine swell rubber agent and its application method |
| CN111607054A (en) * | 2020-06-22 | 2020-09-01 | 北京克林泰尔环保科技有限公司 | Amino modified tire rubber powder/polyurethane composite material and preparation method and application thereof |
-
1995
- 1995-01-27 CN CN95110923A patent/CN1060112C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 《橡胶工业手册》第一分册<生胶与骨架材料> 1989.9.1 谢遂志，刘登祥，周鸣栾主编，化学工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1127693A (en) | 1996-07-31 |
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