CN1778836A - Production of odorless reclaimed rubber at low-temperature by desulfurization rapidly from waste vulcanized rubber - Google Patents
Production of odorless reclaimed rubber at low-temperature by desulfurization rapidly from waste vulcanized rubber Download PDFInfo
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- CN1778836A CN1778836A CN 200510033281 CN200510033281A CN1778836A CN 1778836 A CN1778836 A CN 1778836A CN 200510033281 CN200510033281 CN 200510033281 CN 200510033281 A CN200510033281 A CN 200510033281A CN 1778836 A CN1778836 A CN 1778836A
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Abstract
A fast devulcanizing production of odorless reclaimed rubber at low temperature from waste vulcanized rubber is carried out by taking waste vulcanized rubber powder with 20-80 mesh as raw materials, adding into mixer in proportion by waste vulcanized rubber powder: polyethylene polyamine: dibasic metal halide: rubber accelerant: mineral oil: natural resin=100:0.1-2:0.1-0.5:0.5-2:5-15:5-15, mixing, raising temperature to 50-80 DEG C, blowing off, piling and ageing for 2-3hrs to obtain devulcanized reclaimed rubber powder, putting the mixed and aged devulcanized reclaimed rubber powder into mixing machine and tabletting to obtain odorless reclaimed rubber. It has simple process, no waste gas and liquid discharge and no pollution environmental pollution.
Description
Technical field:
The invention belongs to the process engineering for regenerating field of waste vulcanized rubber, prepare the method for odorless reclaimed rubber more specifically to a kind of waste or used vulcanized rubber.
Background technology:
At present, annual nearly 10,000,000 tons of the rubber product of producing of China, same depleted rubber product also reaches identical quantity.Resource circulation use be avoid shortage of resources, the big problem of the environment of preserving our planet.Waste or used vulcanized rubber is recycled project and has been listed in the China's Agenda 21 scheme.
The regeneration of waste or used vulcanized rubber is still the most important aspect of waste or used vulcanized rubber recycle at present.Traditional waste or used vulcanized rubber renovation process, the recovery time is long, consumes a large amount of energy, and can discharge large quantity of exhaust gas, waste liquid simultaneously, and environment is caused serious pollution; Adopt regenerating waste used vulcanized rubbers such as microwave, ultrasonic wave, high-power electron beam, need higher input, and the efficient of these methods is lower, cost is high, is difficult to realize suitability for industrialized production.Though the De-link regenerator of external invention can make waste or used vulcanized rubber regeneration under the effect of low temperature, mechanical force, because cost to much is difficult to apply in China.Therefore invent a kind of fast, the renovation process of low-cost, free of contamination waste or used vulcanized rubber, be the key that solves the waste or used vulcanized rubber recycling utilization.
Summary of the invention:
The objective of the invention is to overcome the deficiency of prior art, developed the composite regenerant that the agent of a kind of high reactivity regeneration reducing, reduction auxiliary agent, tenderizer are formed,, reach and make waste or used vulcanized rubber low temperature desulfurization rapidly regenerated purpose by a chemical power chemical action.
Technology solution of the present invention is:
Waste or used vulcanized rubber low temperature, desulfurization rapidly prepare the method for odorless reclaimed rubber,
The cleaning of a, waste or used vulcanized rubber, cutting, choose waste and used rubber tyre and various assorted glue is initial feed, waste and used rubber tyre is removed silt and foreign material on the tire through flushing, cut into fritter then, and containing metal partly separated to obtain producing use raw material; Various assorted glue can promptly be used raw material as producing without cleaning cutting;
The pulverizing of b, waste or used vulcanized rubber, screening will be produced with raw material and be pulverized on pulverizer, and become 20-80 purpose rubber powder through bolting, simultaneously cilium separation wherein be obtained the waste or used vulcanized rubber powder;
The mixing desulfurization regeneration of c, waste or used vulcanized rubber powder, press waste or used vulcanized rubber powder by weight: polyethylene polyamine: bivalent metal halide: rubber accelerator: mineral oil: the admixtion any order of natural resin=100: 0.1～2: 0.1～0.5: 0.5～2: 5～15: 5～15 adds the mixing tank thorough mixing, after treating that thing is warming up to 50～80 ℃, discharge is stacked the desulfurization regeneration rubber powder that slaking obtained mixing slaking in 2～3 hours;
The pressure of d, reclaimed rubber is produced sheet, the desulfurization regeneration rubber powder that mixes slaking is dropped into press 5-10 minute slice of refining in the opening rubber mixing machine, obtains the odorless reclaimed rubber.
Described polyethylene polyamine is diethylenetriamine, triethylene tetramine, tetraethylene pentamine or polyethylene polyamine, bivalent metal halide is iron protochloride and cuprous chloride, rubber accelerator is vulkacit D or benzothiazolyl mercaptan, mineral oil is aromatic hydrocarbon oil, naphthenic oil and machine oil, and natural resin is a rosin fat.
Described with Stockholm tar or Yatall MA proxy-mineral oil and natural resin.
Described 20-80 purpose waste or used vulcanized rubber powder can directly bought on the market.
The present invention prepares the method for the old vulcanized rubber regeneration glue of refuse and compares with the method for existing preparation, regeneration glue, has the following advantages:
1), the present invention adopted the combination of high reactivity desulfurization regeneration reductive agent, reduction auxiliary agent and tenderizer, and the pressure refining by rubber mixing machine, the combination that has produced a chemical force-chemical reaction realized the quick regenerated purpose of low temperature.
2), compare with traditional water law, floating reclaim production method, the present invention has low temperature, quick, energy-conservation characteristics, and production process does not have waste gas, discharging of waste liquid, can not pollute environment.The reclaimed rubber odorless of being produced, mechanics power can index reach relevant national standard.
3), with prepare reclaimed rubber with physical methods such as microwave, ultrasonic wave, high-power electron beams and compare, method of the present invention has efficient height, characteristics that production cost is low.
4), with other new renovation process as: DE-link regenerator, RRM regenerator are compared, and production cost of the present invention is low, the reclaimed rubber mechanical property height of preparation.
Embodiment
By following embodiment invention is described in further detail: in following examples, each component content is all by pure weight, and waste or used vulcanized rubber is pressed the tyre surface rubber powder, full tire glue powder, and concrete analysis of components is not made in footwear rubber powder and the classification of assorted rubber powder.
Embodiment 1
Waste or used vulcanized rubber low temperature, desulfurization rapidly regeneration prepare the method for reclaimed rubber, and its main technique step condition is as follows:
Step 1, waste or used vulcanized rubber powder mix with composite regenerant
In the super mixer of 200 liters, add the waste and old full tyre vulcanization rubber powder double centner of 20 order to 80 orders, 8 kilograms in rosin fat through pulverizing, under agitation add 12 kilograms the aromatic hydrocarbon oil and the mixture of 1 kilogram of tetraethylene pentamine, 500 gram iron protochlorides, 500 gram vulkacit D and 1 kilogram of benzothiazolyl mercaptan at leisure, stir after 5-15 minute, when material is warming up to 70-80 ℃ owing to friction in the mixing tank, get final product discharge.
Step 2, compound park slaking
The compound of discharging is deposited in the container that opens wide and parks slaking, parks the further infiltration that helps regenerator and continues the generation desulphurization reaction, and the storage period was advisable with 2-3 hour.
Step 3: the pressure of mixing the slaking material is produced sheet
The pressure of compound is produced sheet and can be carried out on 14 or 16 inches opening rubber mixing machine.The roll spacing of rubber mixing machine is transferred to about 1mm, pressing refining in the compound of the slaking adding rubber mixing machine, because the effect of mechanical force, the cross-linked network of vulcanized rubber further destroys, more help the desulfurization regeneration reaction of regenerator, after pressing refining in 5-10 minute, can obtain the whole-tyre reclaim of odorless.Adopt renovation process of the present invention, if full tire glue powder is 20---40 orders, the reclaimed rubber tensile strength at yield of preparation is greater than 8Mpa, tensile yield is greater than 350%, as pectin powder is 60 orders---80 orders, and the reclaimed rubber tensile strength at yield of preparation is greater than 9Mpa, and tensile yield is greater than 400%.
Embodiment 2:
Waste and oldly mix the method that the regeneration of vulcanized rubber low temperature, desulfurization rapidly prepares reclaimed rubber, its main technique Step By Condition is as follows:
Step 1, waste and oldly mix mixing of vulcanized rubber powder and composite regenerant
In the super mixer of 200 liters, add 30---the waste and old vulcanized rubber powder double centner that mixes of 40 purposes, 8 kilograms of rosin, the mixture that under agitation slowly adds 15 kilograms of aromatic hydrocarbon oil and 2 kilograms of triethylene tetramines or polyethylene polyamine, 1 kilogram of iron protochloride, 0.5 kilogram of vulkacit D, 1 kilogram of benzothiazolyl mercaptan, mix after 10-20 minute, when material temperature is warmed up to 70-80 ℃ owing to friction in the mixing tank, get final product discharge.
Step 2 is identical with embodiment 1 described processing condition with step 3.
According to the waste and old source difference that mixes vulcanized rubber, the reclaimed rubber tensile strength at yield of this method preparation can reach 3---and 5MPA, tensile yield can reach 200-300%.
If aromatic hydrocarbon oil among the embodiment and rosin fat replace with 20 kilograms Stockholm tar or Yatall MA, also can prepare the reclaimed rubber that reaches the foregoing description 1 and embodiment 2 performances, but this reclaimed rubber has the distinctive smell of Stockholm tar or Yatall MA.
Principle of work: the present invention adopts highly active polyethylene polyamine and bivalent metal halide as the agent of low temperature desulfurization rapidly regeneration reducing.Wherein ethyleneamine can be diethylenetriamine, triethylene tetramine, tetraethylene pentamine and polyethylene polyamine; Bivalent metal halide can be iron protochloride and cuprous chloride.With rubber accelerator vulkacit D with reducing property and radical termination character and benzothiazolyl mercaptan for helping reductive agent.With mineral oil such as aromatic hydrocarbon oil, naphthenic oil and machine oil and Gum Rosin is tenderizer.Can also replace above-mentioned mineral oil and natural resin with Stockholm tar and Yatall MA.Tenderizer has quickened regeneration reducing agent, the infiltration that helps reductive agent and desulfurization chemical reaction, and refines through the pressure of rubber mixing machine, produces chemistry-power chemical action, reaches to make waste or used vulcanized rubber low temperature desulfurization rapidly regenerated purpose.This composite regenerant not only can the regeneration of low temperature desulfurization rapidly prepare full tire glue powder reclaimed rubber, can also prepare waste and old NBR, CR, elastomeric reclaimed rubbers such as EPDM, IIR fast by low temperature.
Claims (3)
1, waste or used vulcanized rubber low temperature, desulfurization rapidly prepare the method for odorless reclaimed rubber, it is characterized in that:
A, to choose 20-80 purpose waste or used vulcanized rubber powder be raw material; By following weight waste or used vulcanized rubber powder: polyethylene polyamine: bivalent metal halide: rubber accelerator: mineral oil: the admixtion any order of natural resin=100: 0.1～2: 0.1～0.5: 0.5～2: 5～15: 5～15 adds the mixing tank thorough mixing, after treating that thing is warming up to 50～80 ℃, discharge is stacked the desulfurization regeneration rubber powder that slaking obtained mixing slaking in 2～3 hours;
B, will mix to press in the desulfurization regeneration rubber powder input exploitation formula rubber mixing machine of slaking and produce sheet, obtain the odorless reclaimed rubber.
2, waste or used vulcanized rubber low temperature according to claim 1, desulfurization rapidly prepare the method for odorless reclaimed rubber, it is characterized in that: polyethylene polyamine is diethylenetriamine, triethylene tetramine, tetraethylene pentamine or polyethylene polyamine, bivalent metal halide is iron protochloride and cuprous chloride, rubber accelerator is vulkacit D or benzothiazolyl mercaptan, mineral oil is aromatic hydrocarbon oil, naphthenic oil and machine oil, and natural resin is a rosin fat.
3, waste or used vulcanized rubber low temperature according to claim 2, desulfurization rapidly prepare the method for odorless reclaimed rubber, it is characterized in that: with Stockholm tar or Yatall MA proxy-mineral oil and natural resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510033281 CN1778836A (en) | 2005-02-25 | 2005-02-25 | Production of odorless reclaimed rubber at low-temperature by desulfurization rapidly from waste vulcanized rubber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510033281 CN1778836A (en) | 2005-02-25 | 2005-02-25 | Production of odorless reclaimed rubber at low-temperature by desulfurization rapidly from waste vulcanized rubber |
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| CN1778836A true CN1778836A (en) | 2006-05-31 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173059B (en) * | 2007-10-11 | 2010-06-09 | 回振有 | Atmospheric cryochemical ageing desulfurizing method and device for waste and old vulcanized rubber |
| CN104629085A (en) * | 2015-01-30 | 2015-05-20 | 柳州市中配橡塑配件制造有限公司 | Method for desulfurizing waste rubber |
| CN105419359A (en) * | 2015-12-22 | 2016-03-23 | 福建省泉州市公路局 | Waste tyre powder modified asphalt and preparation method therefor |
| CN108219192A (en) * | 2018-01-11 | 2018-06-29 | 徐州工业职业技术学院 | A kind of method that low-temp desulfurization produces environmental friendly regenerated glue |
| CN110128697A (en) * | 2018-02-02 | 2019-08-16 | 李建宾 | A kind of manufacturing method of high-strength environment-friendly reclaimed rubber |
| CN111925558A (en) * | 2020-07-23 | 2020-11-13 | 三河市长城橡胶有限公司 | Normal-temperature regeneration method of waste rubber |
-
2005
- 2005-02-25 CN CN 200510033281 patent/CN1778836A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173059B (en) * | 2007-10-11 | 2010-06-09 | 回振有 | Atmospheric cryochemical ageing desulfurizing method and device for waste and old vulcanized rubber |
| CN104629085A (en) * | 2015-01-30 | 2015-05-20 | 柳州市中配橡塑配件制造有限公司 | Method for desulfurizing waste rubber |
| CN105419359A (en) * | 2015-12-22 | 2016-03-23 | 福建省泉州市公路局 | Waste tyre powder modified asphalt and preparation method therefor |
| CN105419359B (en) * | 2015-12-22 | 2018-01-26 | 福建省泉州市公路局 | A kind of junked tire powder-modified asphalt and preparation method thereof |
| CN108219192A (en) * | 2018-01-11 | 2018-06-29 | 徐州工业职业技术学院 | A kind of method that low-temp desulfurization produces environmental friendly regenerated glue |
| CN110128697A (en) * | 2018-02-02 | 2019-08-16 | 李建宾 | A kind of manufacturing method of high-strength environment-friendly reclaimed rubber |
| CN111925558A (en) * | 2020-07-23 | 2020-11-13 | 三河市长城橡胶有限公司 | Normal-temperature regeneration method of waste rubber |
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