CN109503882A - A kind of preparation method of rubber rubber powder - Google Patents
A kind of preparation method of rubber rubber powder Download PDFInfo
- Publication number
- CN109503882A CN109503882A CN201811305078.9A CN201811305078A CN109503882A CN 109503882 A CN109503882 A CN 109503882A CN 201811305078 A CN201811305078 A CN 201811305078A CN 109503882 A CN109503882 A CN 109503882A
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- China
- Prior art keywords
- rubber powder
- rubber
- preparation
- activator
- softening agent
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- 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.)
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
-
- 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
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of preparation methods of rubber rubber powder, it is applied to rubber powder production field, and making step includes A1 feedstock processing；The stirring of A2 ingredient；A3 heat temperature raising: material heats up 30-40 minutes in heating device, and temperature rises to 160-180 DEG C；A4 scission of link: will heat up 160-180 DEG C of material and be placed in the microwave field that frequency is 700MHZ to 950MHZ, reaction time 40-50 minute, Mooney viscosity value 100-110；A5 cooling, which is packaged, to be saved；Rubber powder fusing time made from this method is short, fusion temperature is low, and good with asphalt solubility, the waterproof roll density as made from the rubber powder is small, and peel strength is big, and lower temperature resistance is good, and heat resisting temperature is high, and properties of product greatly improve, and has the necessity widelyd popularize.
Description
Technical field
The present invention relates to rubber powder production field, specifically a kind of preparation method of rubber rubber powder.
Background technique
Currently, the preparation method of rubber rubber powder is that waste tire is carried out to mouth circle separation, slitting, stripping and slicing, then by stripping and slicing
Tire afterwards is directly ground to 30-32 targeted fine powder, then the fine powder is obtained iron through magnetic separation and is cut and rubber rubber powder.Such as Granted publication
Number for CN104002397B a kind of rubber rubber powder preparation method, using rubber rubber powder screening efficiency made from this method height,
The fine powder that particle is small, with high purity can be made.
Existed in waterproofing membrane production using common rubber powder made from the physical mechanical method as following drawbacks: 1. to pitch
Temperature requirement it is high, usually 190 degree -- 210 degree.2. poorly soluble needs repeatedly to be added in rubber powder addition, stir
Time is up to 3-4 hours, time-consuming, increase energy consumption；And often there is spillover in rubber powder adding procedure, once overflow damage
It loses serious；3. waterproof roll obtained, strength index is low, and resist cold resistance to heat differential.
It is necessary to study, improve production technology, the soluble good rubber rubber powder of production, waterproof roll of good performance is made
Material.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of preparation method of rubber rubber powder, rubber made from this method
The variation of the molecular chain rupture of rubber powder, internal structure causes the intermiscibility of the rubber rubber powder and pitch good, and the rubber powder is made
Waterproof roll performance it is good, quality is high.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of preparation method of rubber rubber powder, comprises the following production steps that
A1 feedstock processing: waste and old rubber tyre stripping and slicing is ground into the rubber powder of 30-50 mesh, the rubber powder that then will be crushed
Washing removal impurity；
The stirring of A2 ingredient: rubber powder, activator and the softening agent after impurity elimination being sent into agitating device simultaneously and stirred evenly, and stirred
Good material is sent into heating device by conveying pipeline；
A3 heat temperature raising: material is warming up to 160-180 DEG C in heating device；
A4 scission of link: the A3 material for being warming up to 160-180 DEG C is placed in the microwave field that frequency is 700MHZ to 950MHZ, when reaction
Between 40-50 minutes, Mooney viscosity value 100---110；
A5 cooling: the material after A4 step process is sent into cooling device, after so that its temperature is down to 30-45 DEG C, is packaged and is saved.
A further improvement of the present invention is that: ingredient is added in rubber powder, activator and softening agent simultaneously in the A2 step
Device is sent into agitating device after completing ingredient.
A further improvement of the present invention is that: the mass parts ratio of the rubber powder, activator and softening agent constituent
Are as follows: rubber powder 9.5-10.5；Activator 0.15-0.25；Softening agent 0.9-1.1.
A further improvement of the present invention is that: the mass parts ratio of the rubber powder, activator and softening agent constituent
Are as follows: rubber powder 10；Activator 0.2；Softening agent 1.
A further improvement of the present invention is that: the heating device of the A3 step includes the U-shaped cavity body for holding heating material
With the microwave generator heated for material in U-shaped cavity body, the temperature of material rises to 165-175 DEG C in the U-shaped cavity body.
A further improvement of the present invention is that: the interior shaftless conveyor screw for being equipped with conveying material of the U-shaped cavity body.
A further improvement of the present invention is that: providing frequency for the material scission of link in the A4 step is 750-900MHZ micro-
The equipment of wave field is microwave generator.
A further improvement of the present invention is that: the Mooney viscosity value of the material is 105.
By adopting the above-described technical solution, the beneficial effect that the present invention obtains is:
The present invention is heated to the rubber powder granule crushed using the method for microwave heating and is made in rubber powder using the effect of microwave energy
S-S key and the fracture of S-C key change the internal structure of rubber powder, the intermiscibility increase of rubber powder made from this method and pitch
50%, the mixing time after the rubber powder is added during waterproofing membrane production, in pitch shortens half, and instant dissolving glue powder adds
Dosage increases by 20%, and the quality of waterproof roll improves 30%.
Rubber powder solubility obtained is good through the invention, and the quality of waterproof roll made from the rubber powder greatly improves.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
The activator and softening agent that the present invention uses are that Anhui Jinma Rubber Additives Co., Ltd. manufactures, the activator
Including aromatic mercaptans and its zinc salt and aromatic disulfides, in reclaimed rubber production process, desulfurization time can be shortened, increased
Add the elongation and flexibility of reclaimed rubber, price is low, performance is good, effectively reduces production cost.As it can be seen that activator can be shortened again
The raw time, reduce the effect of softening agent dosage.Common softening agent has coal tar, pine tar, petroleum line softener, cracking slag
Oil plays expansion and plasticization.
Embodiment 1
A kind of preparation method of rubber rubber powder, comprises the following production steps that
Waste and old tire cutouts: being ground into the rubber powder of 30 mesh by A1 feedstock processing, then goes the rubber powder crushed washing
Except impurity；
A2 ingredient stirring: by after impurity elimination rubber powder and activator, softening agent with the mass parts ratio of constituent: 9:0.15:
0.9 is added proportioner simultaneously and is sent into agitating device and stirs evenly, and the material being stirred is sent into heating device by conveying pipeline；
A3 heat temperature raising: material heats up 30 minutes in U-shaped cavity body, and temperature rises to 160 DEG C；
A4 scission of link: 160 DEG C in U-shaped cavity body of material is placed in the microwave field that frequency is 700MHZ, the reaction time 40 minutes, door
Buddhist nun's viscosity number 100；
A5 cooling: the material after scission of link is sent into cooling device, after so that its temperature is down to 30 DEG C, is packaged and is saved.
Embodiment 2
Waste tire stripping and slicing is ground into the rubber powder of 40 mesh by A1；
Rubber powder and activator described in A2, softening agent are with the mass parts ratio of constituent: ingredient dress is added in 10:0.2:1 simultaneously
In setting, other conditions are same as Example 1；
A3 material heats up 35 minutes in U-shaped cavity body, and temperature rises to 170 DEG C；
A4 scission of link: 170 DEG C in U-shaped cavity body of material is placed in the microwave field that frequency is 800MHZ, the reaction time 45 minutes, door
Buddhist nun's viscosity number 105；
A5 cooling: the material after scission of link is sent into cooling device, after so that its temperature is down to 40 DEG C, is packaged and is saved.
Embodiment 3
Waste tire stripping and slicing is ground into the rubber powder of 50 mesh by A1；
Rubber powder and activator described in A2, softening agent are with the mass parts ratio of constituent: ingredient is added simultaneously in 11:0.25:1.1
In device, other conditions are same as Example 1；
A3 material heats up 40 minutes in U-shaped cavity body, and temperature rises to 170 DEG C；
A4 scission of link: 180 DEG C in U-shaped cavity body of material is placed in the microwave field that frequency is 900MHZ, the reaction time 50 minutes, door
Buddhist nun's viscosity number 110；
A5 cooling: the material after scission of link is sent into cooling device, after so that its temperature is down to 45 DEG C, is packaged and is saved.
For heating device in embodiment including being U-shaped cavity body and microwave generator, the setting of the U-shaped cavity body can be material
Sufficiently large reaction compartment is provided, and U-shaped cavity body is made of metal.The working cavity of material selects the reason of U-shaped cavity body to have
Two: material amount of storage is greater than the circular cavity with diameter in cavity；The upper cover of cavity is horizontally disposed to be conducive to installation microwave generator.
The shaftless conveyor screw of conveying material is equipped in the U-shaped cavity body, the conveying that material is increased compared with having axis conveyor screw is empty
Between.The inner surface of the U-shaped cavity body, the outer surface of shaftless conveyor screw are coated with anti-stick coating, and effectively material can be avoided in height
It is adhered to the inner surface of U-shaped cavity body and the outer surface of shaftless conveyor screw under temperature state, influences going on smoothly for production.It is described micro-
Wave producer is not only material heat temperature raising in U-shaped cavity body, moreover it is possible to which the material offer heated in U-shaped cavity body meets scission of link condition
Microwave field.
The heating up process of A3 step carries out in heating device, and magnetron and water cooling are equipped in the microwave generator
The circulatory system, water-cooling circulating system provide the low temperature environment suitable for magnetron work for magnetron.The magnetron generates electromagnetism
Wave is emitted in U cavity, and since U cavity is made of metal, electromagnetic wave cannot be penetrated, and can only be reflected wherein, is led to
It crosses pair to penetrate, conduct rubber powder heat absorption, causes the vibration at high speed of polar molecule in rubber powder, the friction caused by vibrating makes to produce inside rubber powder
Raw high fever, rubber powder is heated.Microwave has penetrability simultaneously, keeps dielectric material inside and outside almost while heating of absorbing heat, greatly shortens
Heat conduction time in conventional heating, material inside and outside homogeneous heating, quick heating, capacity usage ratio are high.
The process of A4 step scission of link also carries out in the U-shaped cavity body of heating device, adjusts magnetron in microwave generator
Power is placed in 160-180 DEG C in U-shaped cavity body of material in the microwave field of frequency 700MHZ to 950MHZ, reaction time 40-
50 minutes, until Mooney viscosity value 100-110.The Mooney viscosity value is measured by Mooney viscosity instrument, can reflect the poly- of synthetic rubber
Right and molecular weight.Mooney viscosity value is higher, and scission of link depth is more shallow.
160-180 DEG C of material is placed in the microwave field that frequency is 700MHZ to 950MHZ, the polar group of rubber powder material
It is swung due to the polar change of friendship frequency electromagnetic field with the variation of electromagnetic wave, because of the heat power of molecule itself and the phase of adjacent molecule
The inertia of interaction and molecule, polar group due to the variation with electric field by resistance and interference, thus polar group and point
Huge energy is generated between son.When the energy of rubber rubber powder molecule absorption reaches a certain level, molecular link is broken, glue
The fracture of S in powder --- S key and S --- C key.The change of rubber powder internal structure keeps its appearance more fluffy, and with pitch
Compatibility, it is soluble more preferable.
The necessity of A5 cooling step setting: by the temperature of charge after scission of link at 170 DEG C or so, it need to be sent into cooling dress as early as possible
It prevents the high-temperature steam of softening agent and activator from directly arranging Xiang great Qi in setting, pollutes environment.It is sent into cooling device, drops its temperature
To after 30-45 DEG C, play the role of cooling, prevents the rubber powder after high temperature desulfurizing from aoxidizing and influencing product quality.In addition, softening
The high-temperature steam of agent and activator can also become liquid and penetrate into rubber powder, avoid being exhausted directly to atmosphere, pollute environment.So
It is packaged and saves afterwards.
The effect of microwave generator makes rubber powder internal structure that huge variation occur, and leads to rubber powder made from this method and drip
Green solubility greatly improves.During waterproofing membrane production, rubber powder made from each embodiment be respectively 1 rubber powder of embodiment,
3 rubber powder of 2 rubber powder of embodiment and embodiment, rubber powder made from each embodiment and common rubber powder produce waterproof roll under similarity condition
Experimental data comparison it is as follows:
Waterproof roll made from the rubber powder for being concluded that the embodiment of the present invention 1, embodiment 2 and the production of embodiment 3 as upper table
Compared with material waterproof roll made from the common rubber powder, waterproof roll density produced by the present invention is small, and peel strength is big, lower temperature resistance
Good, heat resisting temperature is high；And rubber powder fusing time produced by the present invention is short, and fusion temperature is low.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (8)
1. a kind of preparation method of rubber rubber powder, it is characterised in that comprise the following production steps that
A1 feedstock processing: waste and old rubber tyre stripping and slicing is ground into the rubber powder of 30-50 mesh, the rubber powder that then will be crushed
Washing removal impurity；
The stirring of A2 ingredient: rubber powder, activator and the softening agent after impurity elimination being sent into agitating device simultaneously and stirred evenly, and stirred
Good material is sent into heating device by conveying pipeline；
A3 heat temperature raising: material is warming up to 160-180 DEG C in heating device；
A4 scission of link: the A3 material for being warming up to 160-180 DEG C is placed in the microwave field that frequency is 700MHZ to 950MHZ, when reaction
Between 40-50 minutes, Mooney viscosity value 100---110；
A5 cooling: the material after A4 step process is sent into cooling device, after so that its temperature is down to 30-45 DEG C, is packaged and is saved.
2. a kind of preparation method of rubber rubber powder according to claim 1, it is characterised in that: rubber in the A2 step
Powder, activator and softening agent are added after proportioner completes ingredient simultaneously and are sent into agitating device.
3. a kind of preparation method of rubber rubber powder according to claim 2, it is characterised in that: the rubber powder, activator
With the mass parts ratio of softening agent constituent are as follows: rubber powder 9.5-10.5；Activator 0.15-0.25；Softening agent 0.9-1.1.
4. a kind of preparation method of rubber rubber powder according to claim 3, it is characterised in that: the rubber powder, activator
With the mass parts ratio of softening agent constituent are as follows: rubber powder 10；Activator 0.2；Softening agent 1.
5. a kind of preparation method of rubber rubber powder according to claim 1, it is characterised in that: the heating of the A3 step fills
Set the U-shaped cavity body including holding heating material and the microwave generator for material heating in U-shaped cavity body, object in the U-shaped cavity body
The temperature of material rises to 165-175 DEG C.
6. a kind of preparation method of rubber rubber powder according to claim 5, it is characterised in that: set in the U-shaped cavity body
There is the shaftless conveyor screw of conveying material.
7. a kind of preparation method of rubber rubber powder according to claim 1, it is characterised in that: for the object in the A4 step
Expecting that scission of link provides the equipment that frequency is 750-900MHZ microwave field is microwave generator.
8. a kind of preparation method of rubber rubber powder according to claim 1, it is characterised in that: the Mooney viscosity of the material
Value is 105.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305078.9A CN109503882A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of rubber rubber powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305078.9A CN109503882A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of rubber rubber powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109503882A true CN109503882A (en) | 2019-03-22 |
Family
ID=65747517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811305078.9A Withdrawn CN109503882A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of rubber rubber powder |
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| Country | Link |
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| CN (1) | CN109503882A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4104205A (en) * | 1976-01-06 | 1978-08-01 | The Goodyear Tire & Rubber Company | Microwave devulcanization of rubber |
| CN204993933U (en) * | 2015-09-22 | 2016-01-20 | 河北科欧橡胶制品有限公司 | Microwave heating device |
| CN205046030U (en) * | 2015-09-22 | 2016-02-24 | 河北科欧橡胶制品有限公司 | Sweetener is glued in regeneration |
| CN105482474A (en) * | 2015-12-28 | 2016-04-13 | 天津海泰环保科技发展有限公司 | Low-viscosity crumb rubber modified asphalt and preparation method thereof |
-
2018
- 2018-11-05 CN CN201811305078.9A patent/CN109503882A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4104205A (en) * | 1976-01-06 | 1978-08-01 | The Goodyear Tire & Rubber Company | Microwave devulcanization of rubber |
| CN204993933U (en) * | 2015-09-22 | 2016-01-20 | 河北科欧橡胶制品有限公司 | Microwave heating device |
| CN205046030U (en) * | 2015-09-22 | 2016-02-24 | 河北科欧橡胶制品有限公司 | Sweetener is glued in regeneration |
| CN105482474A (en) * | 2015-12-28 | 2016-04-13 | 天津海泰环保科技发展有限公司 | Low-viscosity crumb rubber modified asphalt and preparation method thereof |
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Application publication date: 20190322 |