CN102827394A - Production method of butyl reclaimed rubber - Google Patents
Production method of butyl reclaimed rubber Download PDFInfo
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- CN102827394A CN102827394A CN2012103516427A CN201210351642A CN102827394A CN 102827394 A CN102827394 A CN 102827394A CN 2012103516427 A CN2012103516427 A CN 2012103516427A CN 201210351642 A CN201210351642 A CN 201210351642A CN 102827394 A CN102827394 A CN 102827394A
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- China
- Prior art keywords
- rubber
- butyl
- kneading
- refining
- temperature
- Prior art date
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Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 50
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 31
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000004898 kneading Methods 0.000 claims abstract description 20
- 238000007670 refining Methods 0.000 claims abstract description 17
- 230000001172 regenerating effect Effects 0.000 claims description 23
- 230000008929 regeneration Effects 0.000 claims description 14
- 238000011069 regeneration method Methods 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract description 2
- 230000003204 osmotic effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 239000012752 auxiliary agent Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000004636 vulcanized rubber Substances 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 241001411320 Eriogonum inflatum Species 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012492 regenerant Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000010092 rubber production Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229920002209 Crumb rubber Polymers 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000007353 oxidative pyrolysis Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- 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
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a production method of butyl reclaimed rubber, belonging to the technical field of rubber. The method comprises the following steps: directly sending waste butyl rubber into a reclamation tank without dicing or crushing, and carrying out osmotic swelling under the conditions of high temperature and high pressure to break the reticular cross-linked structure; cooling, and sending into a kneading machine; and finally, refining, filtering the rubber, and carrying out batch-off to achieve the goal of reclamation. The whole production process does not use any assistant or additive, and is completely environment-friendly.
Description
Technical field
The present invention relates to a kind of working method of butyl reclaimed rubber, belong to the rubber technology field.
Background technology
Butyl reclaimed rubber is meant that in order to butyl rubber be the regenerated rubber that the butyl rubber of the waste vapour car inner tube of a tyre, scrap rubber capsule, waste water tire, sealed strip, bottle stopper and other rubber items of main body is partly produced.Waste vulcanized butyl rubber is through physical and chemical processes such as pulverizing, heating, treat mechanically, make its from elastic stage become have plasticity and viscosity can revulcanization butyl rubber, be applied to again in the butyl rubber goods.Butyl reclaimed rubber of many uses; Can be used for making the butyl inner tube of a tyre; The rubber item that resistance to air loss such as production butyl waterproof roll are had relatively high expectations; Also can be used for electric wire, cable and various heat-resisting, ageing-resistant rubber item, is the ideal material that the rubber item industry reduced production costs, improved complete processing.
The production technique of butyl reclaimed rubber is domestic main employing dynamic desulfurization, frying pan method, screw extrusion method etc. at present, and the someone had studied " milling machine method " in recent years, and the production of butyl reclaimed rubber is a a progressive step; But above the whole bag of tricks all in various degree have a secondary pollution (making used additives); And energy consumption is higher, and process loss is big, and physical index is on the low side; Quality is unstable, has increased the cost of butyl reclaimed rubber.
Summary of the invention
The present invention has overcome the shortcoming of traditional technology, and a kind of working method of butyl reclaimed rubber is provided.This method waste butyl rubber without stripping and slicing, need not be broken, directly get into regenerating tank, under HTHP, permeate swelling; Interrupt its cross-linked network, after cooling, get into milling machine, after refining; Filter glue, following sheet; Reach the regenerated purpose, whole process of production is not used any auxiliary agent and additive, environmental protection fully.
Technical scheme of the present invention is: a kind of working method of butyl reclaimed rubber, it is characterized in that,
With waste butyl rubber without stripping and slicing, need not be broken, directly send into regenerating tank (amount of water is advisable just to flood waste butyl rubber); Then through carrying out heat temperature raising and pressurization through the mode of hot steam (200 ℃～250 ℃ of temperature) in regenerating tank chuck energising or logical oil heating and the regenerating tank, during need not add any auxiliary agent; Exhaust pressure relief when vapor pressure reaches 2.6MPa in vapor temperature in the regenerating tank rises to 200 ℃～250 ℃ and regenerating tank is treated to take out material when jar internal pressure is recovered normal pressure, and regeneration finishes; Behind kneading, refining moulding, filter glue and following sheet, obtain butyl reclaimed rubber then.
Said kneading is: the good waste butyl rubber of will regenerating is sent into milling machine and is carried out kneading, 3-7 minute kneading time, 120 ± 2 ℃ of kneading temperature;
Said refining moulding is: 90 ± 2 ℃ of dandy roll temperature, and below the roll spacing 0.5mm, refining 2-3 time;
Said filter glue is: the butyl reclaimed rubber that refining is good is sent into rubber strainer and is filtered, and filter screen is 80 orders;
Said sheet down is: with sheet under the refiner, the roller temperature of refiner is below 90 ℃, below the roll spacing 0.2mm.
Said waste butyl rubber is the butyl rubber part of air tube, scrap rubber capsule, waste water tire, sealed strip, bottle stopper and other rubber items.
Butyl rubber is to be monomer with iso-butylene with a small amount of isoprene, adopts aluminum chloride or boron trichloride or other catalyzer, (100 ℃) polymeric multipolymer at low temperatures; Because contain a small amount of isoprene in the polymkeric substance, therefore, the degree of unsaturation of butyl rubber is lower; The butyl rubber good heat resistance, through hot air aging in 120 ℃ * 144 hours, the elongation change of rubber was little; Tensile strength still can keep more than 70%, in the sulfidation, main formations-C-C-key and-the C-O-C cross-link bond; This performance specification butyl rubber is difficult to regeneration (desulfurization) than tree elastomer, and it is not all right adopting the method for producing whole tire reclaim rubber to produce butyl renewable rubber.
The essence of waste vulcanized rubber regeneration mechanism is: the reticulated structure of waste vulcanized rubber-be blended polymer is through mechanical shearing; Under the comprehensive action of hot oxygen and chemical regenerant; DeR takes place; The tridimensional network of destruction vulcanized rubber removes elasticity, becomes to have plasticity-and can carry out crosslinked regenerated rubber again.Sum up the experience over more than 100 year, various waste vulcanized rubber regenerative processes mainly are divided into three parts, and wherein a part is a treat mechanically, comprise waste rubber pulverizing, rubber powder kneading, filtration, refining; Another part is chemical treatment, mainly is thermo-oxidative pyrolysis, and the 3rd is the effect of chemical regenerant, draws together i.e. regeneration and mechanico-chemical reaction.
The difference of waste vulcanized rubber production technique mainly is the difference on the renovation process.The regeneration of waste vulcanized rubber, people are called " desulfurization " traditionally, and original idea is a process opposite with the vulcanization of rubber.In actual production; Be impossible sulphur atom in the vulcanized rubber is taken off, for the rubber with sulfur cross-linking, regenerated rubber just destroys the polysulfidic bond in the vulcanized rubber; Be that cross-link bond is cut off, make it finally become compliant regenerated rubber again.Traditional reclaiming process all need add a certain amount of auxiliary agent, under certain temperature, pressure, leans on the molecular chain that is used for interrupting waste butyl rubber of auxiliary agent, simultaneously the C-C key has also been caused bigger destruction, and the butyl reclaimed rubber rerum natura of production is lower.Regeneration principle of the present invention is: utilize HTHP that the reticulated structure molecular chain of waste butyl rubber is interrupted, make it become linear structure, recover its plasticity, to reach the regeneration purpose.Because regenerative process is not added any auxiliary agent, therefore very little to the linear structure destruction of waste butyl rubber, guaranteed physical index, the regeneration quality is good.
The invention has the beneficial effects as follows:
1. process innovation: adopt reclaiming process of the present invention, " high-temperature dynamic desulfurization " of more domestic present employing, " frying pan method " or " screw extrusion method " technology are advanced, the regeneration steady quality;
2. utilize scope wide: the shoddy physical index that this method is produced is high, and the butyl reclaimed rubber tensile strength at yield of producing than traditional processing technology improves 1Mpa, and tensile yield improves 100 percentage points;
3, green, environmental protection: this technology is not added any chemical assistant in production process, and working medium is steam and water, and can reuse, and does not efflux, and really accomplishes environmental protection;
4, energy-saving and cost-reducing: adopt this technology, waste butyl rubber has solved the problem of broken difficulty without stripping and slicing, pulverizing, has practiced thrift facility investment and energy consumption, and glue per ton is energy-conservation to reduce by 8% than traditional technology;
5, loss is low: traditional butyl reclaimed rubber production technique spillage of material is about 5%, and this technology has only about 1%.
Embodiment
Embodiment 1
With waste butyl rubber without stripping and slicing, need not be broken; Directly send into regenerating tank; Add a certain amount of water (amount of water is advisable just to flood waste butyl rubber); Then through carrying out heat temperature raising and pressurization through the mode of hot steam (200 ℃～230 ℃ of temperature) in regenerating tank chuck energising or logical oil heating and the regenerating tank, during need not add any auxiliary agent; Exhaust pressure relief when vapor pressure in the regenerating tank reaches 2.6MPa (vapor temperature rises to 220 ℃ in the regenerating tank at this moment) is treated to take out material when jar internal pressure is recovered normal pressure, and regeneration finishes.The waste butyl rubber that regeneration is good is sent into milling machine and is carried out kneading, 5 minutes kneading time, 120 ℃ of kneading temperature.Kneading finishes and carries out the refining moulding again, 90 ℃ of dandy roll temperature, and below the roll spacing 0.5mm, refining 2 times.The butyl rubber that refining is good is sent into rubber strainer and is filtered, and filter screen is 80 orders.Again with sheet under the refiner, the roller temperature of refiner below the roll spacing 0.2mm, promptly obtains butyl reclaimed rubber below 90 ℃ behind the filter glue.
The performance index of the inventive method and high-temperature dynamic desulfurization are relatively tested through oil and chemical industry rubber and reconstituted product quality supervision and test center, and the result is as shown in table 1.
The performance index of table 1 the inventive method and conventional high-temperature dynamic desulfurization relatively
Find out that from above result the butyl reclaimed rubber that the inventive method is produced reaches the national standard of butyl reclaimed rubber fully, increases than traditional technology.
Embodiment 2
With waste butyl rubber without stripping and slicing, need not be broken; Directly send into regenerating tank; Add a certain amount of water (amount of water is advisable just to flood waste butyl rubber); Then through carrying out heat temperature raising and pressurization through the mode of hot steam (200 ℃～230 ℃ of temperature) in regenerating tank chuck energising or logical oil heating and the regenerating tank, during need not add any auxiliary agent; Exhaust pressure relief when vapor pressure in the regenerating tank reaches 2.6MPa (vapor temperature rises to 225 ℃ in the regenerating tank at this moment) is treated to take out material when jar internal pressure is recovered normal pressure, and regeneration finishes.The waste butyl rubber that regeneration is good is sent into milling machine and is carried out kneading, 5 minutes kneading time, 118 ℃ of kneading temperature.Kneading finishes and carries out the refining moulding again, 88 ℃ of dandy roll temperature, and below the roll spacing 0.5mm, refining 3 times.The butyl rubber that refining is good is sent into rubber strainer and is filtered, and filter screen is 80 orders.Again with sheet under the refiner, the roller temperature of refiner below the roll spacing 0.2mm, promptly obtains butyl reclaimed rubber below 90 ℃ behind the filter glue.
Claims (3)
1. the working method of a butyl reclaimed rubber is characterized in that, waste butyl rubber is directly sent into regenerating tank, adds entry; Switch on through the regenerating tank chuck then or lead to the mode of leading to 200 ℃～250 ℃ superheated vapour in oil heating and the regenerating tank and carry out heat temperature raising and pressurization; Exhaust pressure relief when vapor temperature in the regenerating tank rises to 200 ℃～250 ℃ and vapor pressure and reaches 2.6MPa is treated to take out material when jar internal pressure is recovered normal pressure, and regeneration finishes; Behind kneading, refining moulding, filter glue and following sheet, obtain butyl reclaimed rubber then.
2. the working method of a kind of butyl reclaimed rubber as claimed in claim 1 is characterized in that,
Said kneading is: the good waste butyl rubber of will regenerating is sent into milling machine and is carried out kneading, 3-7 minute kneading time, 120 ± 2 ℃ of kneading temperature;
Said refining moulding is: 90 ± 2 ℃ of dandy roll temperature, and below the roll spacing 0.5mm, refining 2-3 time;
Said filter glue is: the butyl reclaimed rubber that refining is good is sent into rubber strainer and is filtered, and filter screen is 80 orders;
Said sheet down is: with sheet under the refiner, the roller temperature of refiner is below 90 ℃, below the roll spacing 0.2mm.
3. according to claim 1 or claim 2 a kind of working method of butyl reclaimed rubber is characterized in that the amount of water of said regenerating tank is for just flooding waste butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103516427A CN102827394A (en) | 2012-09-20 | 2012-09-20 | Production method of butyl reclaimed rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103516427A CN102827394A (en) | 2012-09-20 | 2012-09-20 | Production method of butyl reclaimed rubber |
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| Publication Number | Publication Date |
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| CN102827394A true CN102827394A (en) | 2012-12-19 |
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| CN2012103516427A Pending CN102827394A (en) | 2012-09-20 | 2012-09-20 | Production method of butyl reclaimed rubber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591148A (en) * | 2019-09-05 | 2019-12-20 | 江苏睿博环保设备有限公司 | Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method thereof |
| CN115785548A (en) * | 2022-12-15 | 2023-03-14 | 德昌金锋橡胶有限公司 | Anti-seepage regenerated rubber and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106424A (en) * | 1994-02-05 | 1995-08-09 | 蒙自赛特橡胶制品厂 | High-pressure method reclaimed rubber production process |
-
2012
- 2012-09-20 CN CN2012103516427A patent/CN102827394A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106424A (en) * | 1994-02-05 | 1995-08-09 | 蒙自赛特橡胶制品厂 | High-pressure method reclaimed rubber production process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591148A (en) * | 2019-09-05 | 2019-12-20 | 江苏睿博环保设备有限公司 | Reclaimed rubber without adding any auxiliary agent in desulfurization process and preparation method thereof |
| CN115785548A (en) * | 2022-12-15 | 2023-03-14 | 德昌金锋橡胶有限公司 | Anti-seepage regenerated rubber and preparation method thereof |
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Application publication date: 20121219 |