CN105729652B - A method of reclaimed rubber is prepared using mixer kneading desulfurization powder - Google Patents
A method of reclaimed rubber is prepared using mixer kneading desulfurization powder Download PDFInfo
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- CN105729652B CN105729652B CN201610140918.5A CN201610140918A CN105729652B CN 105729652 B CN105729652 B CN 105729652B CN 201610140918 A CN201610140918 A CN 201610140918A CN 105729652 B CN105729652 B CN 105729652B
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- mixer
- desulfurization
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- reclaimed rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/375—Thiols containing six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
Abstract
A method of reclaimed rubber is prepared using mixer kneading desulfurization powder, belongs to waste old circular regeneration field.Preliminary desulfurization powder after cooling and auxiliary agent are added in mixer, utilize the powerful shearing of mixer, mixed and higher productivity ratio, the effects of applying shearing to preliminary desulfurization powder under the conditions of cryogenic seal, stretching and compress, reaches the effect of kneading.In this course, the cross-linked network in waste rubber powder can be further destroyed, so that reducing the Mooney viscosity of desulfurization powder under the premise of guaranteeing that mechanical property does not reduce, reclaimed rubber product being prepared.The present invention is worked under closed, low temperature, shear conditions using mixer, having not only acted as traditional conche reduces the effect of desulfurization powder Mooney viscosity, it ensure that environmental protection, the energy conservation of production process simultaneously, and the mechanical property of obtained reclaimed rubber product and Mooney viscosity stability are superior to product obtained by traditional conche.
Description
Technical field:
The present invention relates to a kind of new methods for reducing desulfurization powder Mooney viscosity, more particularly to use mixer kneading desulfurization
The method that rubber powder prepares reclaimed rubber, belongs to field of cyclic utilization of waste rubber.
Background technique:
With the fast development of China's rubber industry, the domestic demand to rubber sources is also increasing, and China's rubber disappears
It occupies first place in the world within consumption continuous 13 years, natural rubber in 2014 consumes 4,400,000 tons, and synthetic rubber consumes 5,800,000 tons, and certainly
It is lower to rate.At the same time, 2013, Chinese waste tire yield had reached 2.99 hundred million, and weight reaches 10,800,000 tons,
And increased with the speed of about 5%-6% every year.
In order to meet the material performance requirement of continuous improvement, rubber is towards high-intensitive, wear-resisting, stable and ageing-resistant direction
Development, but the problem of rubber after discarding is unable to natural degradation over a long time is caused simultaneously, a large amount of waste old causes
Black pollution more intractable than plastic pollution.And another reverse side, due in recent years, China's rubber industry fast development,
So that the domestic demand to rubber sources sharply increases, the problem of China's rubber sources scarcity becomes increasingly conspicuous.In summary two o'clock,
So that becoming the main method that China's waste old recycles to the desulfurization regeneration of waste tire, account at China's waste old
Manage 70% or more of total amount.The basic production process flow of waste tire desulfurization regeneration mainly has three process: i) by damaged tire
Crushing prepares rubber powder；Ii rubber powder) is subjected to desulfurization, desulfurization powder is made；Iii) desulfurization powder is refined, it is viscous to reduce Mooney
Final products are made in degree and raising mechanical property.Wherein the refining in third procedure refers to desulfurization powder being added to pony roll
Away from open mill in carry out repeatedly thin logical, have reached the Mooney viscosity for reducing reclaimed rubber, improve reclaimed rubber processing performance and
Mechanical property.In actual production, more concatenated high ratio two-roll mills are generallyd use, desulfurization powder cut at a high speed
It cuts and kneading, high shear heat can generate a large amount of flue gas in this course, cause air pollution.Secondly, tradition refining
Every refining equipment requires to be equipped with an operator in technique, and worker not only will receive the harm of smoke pollution, Er Qiekai
The high speed open mill for putting formula can also bring great security risk to it, and industrial injury event is commonplace.When desulfurization powder is by essence
Final clot slice after refining, temperature can reach 100 DEG C or more when slice, since rubber itself is the non-conductor of heat, so that again
Heat in raw rubber cannot quickly be discharged, and not only be easy spontaneous combustion in storage, but also also result in reclaimed rubber Mooney viscosity
Quickly rebound.It is to sum up told, the equipment input cost of traditional method of refining is high, energy consumption is high, and there is low outputs and product
The shortcomings that unstable quality.
In order to reduce traditional precision method bring air pollution, some enterprises, will by installing environmentally friendly exhausting exhaust equipment
Generated flue gas is taken away in refining process, but such environmental protection equipment permanence operation is bad.And in order to reduce refining engineering
The quantity of middle worker, a kind of reclaimed rubber refining process automation linkage production dress of Wang Jingdong (CN201520035809.8) open class
Set, use rubber powder material stock storehouse, rubber powder conveying auger and an at least conche, conche two sides be respectively equipped with turn-down rig and
Sizing material output device, a degree of to improve production efficiency although reducing recruitment number, equipment investment cost increases
Add, while also failing to solve the problems, such as air pollution.
Summary of the invention:
It is an object of the invention to overcome desulfurization powder disadvantages mentioned above in refining process, provides and a kind of pinched using mixer
The method that refining desulfurization powder prepares reclaimed rubber.
A method of reclaimed rubber being prepared using mixer kneading desulfurization powder, it is characterized in that: being 100 parts of desulfurization by weight
Rubber powder, 0.1-2.5 parts of auxiliary agent is added in the mixer for being connected with outer circulation cooling water, by mixing machine inlet in mixing
Under the shear action of machine rotor, rotor speed is controlled after 10-50 revs/min, mixing time 2-10 minutes, temperature of charge is discharged
It is 60~130 DEG C, material is continuously delivered to a bench roller away from the double roller cylinder open mill for 4~8mm, Bao Tonghou is by material through even
Continuous cooling device is cooled to 40 DEG C hereinafter, obtaining prepared reclaimed rubber.
Further, it is characterized in that desulfurization powder used is through one in waste tyre rubber powder, waste butyl rubber, useless EP rubbers
The preliminary desulfurization preparation of kind.
Further, it is characterized in that the Mooney viscosity value of the desulfurization powder of preliminary desulfurization preparation is 60-160.
Further, it is characterized in that mixer mixing rotor type used should be one of shearing-type or engagement type.
Further, it is characterized in that the water temperature of outer circulation water used is 5-25 DEG C.
Further, it is characterized in that the initial sidewall temperature of mixer should side wall temperatures should be in 60- at 10-30 DEG C, discharging
100℃。
Further, it is characterized in that the initial lower top bolt temperature of mixer should be at 20-40 DEG C, the top bolt temperature at present that discharges should be
60-120℃。
Further, it is characterized in that adjuvant used one in pentachlorothiophenol compound, aryl bisulphide, organic sulfonate
Kind.
Pass through structure, processing performance and the mechanical property to desulfurization powder in traditional refining techniques and final reclaimed rubber product
Difference on energy is analyzed, and effect of traditional conche during preparing reclaimed rubber has been understood from principle.Mixer
As a kind of a kind of intermittent mixing facilities of high intensity to grow up on the basis of open mill, working principle and open mill
It plays the same tune on different musical instruments.When mixer works, two rotors are opposite to be turned round, and the material from feed opening is clamped and brings roll gap by rotor
It squeezes and shearing, lower top is encountered after roll gap and fastens cusped edge and is divided into two parts, respectively the gap between front and back locular wall and rotor
It returns above roll gap.In one week around rotor flow, material is sheared everywhere and rubbing action, keeps the temperature of sizing material anxious
Play rises, and viscosity reduces, to improve the processing performance and mechanical property of reclaimed rubber.When due to mixer mixing sizing material by
The shear action arrived is more much bigger than open mill, and glue furnacing temperature is high, so that the efficiency of mixer refining glue is much higher than open mill, with this
Meanwhile mixer also overcomes open mill large labor intensity, the disadvantages of low efficiency, dust is big.
The present invention takes full advantage of the characteristics of mixer high degree of automation, high production efficiency, realize automatic weighing, from
The dynamic functions such as automatic dumping, automatic raising that feed intake, entire refining process can be automatically controlled by computer completely, not only be eliminated artificial
The influence to refining effect is operated, while also significantly reducing the labor intensity of operator and the quantity of operator.With this
Simultaneously as entire refining process all carries out under a relatively closed environment, so that dust and flue gas are controlled well
System, so that working environment has obtained significantly improving, the safety of operator is also improved.And again compared to tradition
The refining process of raw rubber industry, refining process of the invention not only rely on stretching, the extruding, pressure that refining equipment is applied
The shearing forces such as prolong, shear, also innovatively joined chemical assistant, at a certain temperature, with reclaimed rubber internal crosslinking network
Structural interaction reaction, so that the Mooney viscosity of reclaimed rubber further reduces.Compared with traditional refining route, mixer
Bigger physical mechanical shearing force can be applied to desulfurization powder, and chemical assistant is added, so that desulfurization powder is by physics and change
The refining effect of reclaimed rubber can be improved in collective effect, so that refining time greatly shortens, production efficiency is obtained obviously
It improves, while reducing production energy consumption.The method for preparing reclaimed rubber using mixer kneading desulfurization powder provided by the present invention is led to
It crosses reasonable setting and corresponding chemical assistant formula to closed-smelting machine rotor and technological parameter to be added, not only realize
Refinery practice it is safe and environment-friendly and energy saving, while also improving processing performance, mechanical property and the matter of obtained reclaimed rubber
The stability of amount.Therefore, the present invention has obvious economic benefit and social benefit, has a vast market application prospect.
Specific embodiment
The present invention will be further described With reference to embodiment, but the present invention is not limited to these Examples.
It further include those skilled in the art in the open scope of the present invention, the obvious change made.
Embodiment 1: being 100 parts of desulfurization powders prepared by the preliminary desulfurization of waste tyre rubber powder, 1 part of pentachlorothiophenols by weight
It by mixing machine inlet, is added in the mixer for being connected with 5 DEG C of outer circulation cooling waters, in the shearing of engagement rotor of internal mixer
Under effect, rotor speed is controlled after 30 revs/min, mixing time 8 minutes, and discharge temperature of charge is 120 DEG C, continuously by material
A bench roller is delivered to away from the double roller cylinder open mill for 5mm, Bao Tonghou by material through continuous cooling device be cooled to 40 DEG C hereinafter,
Obtain prepared reclaimed rubber.Wherein, the initial sidewall temperature of mixer should side wall temperatures should be at 95 DEG C at 10 DEG C, discharging.
The initial lower top bolt temperature of mixer should be at 20 DEG C, and discharging at present, top bolt temperature should be at 110 DEG C.Above-mentioned preliminary desulfurization preparation takes off
The Mooney viscosity of sulphur rubber powder is 158, tensile strength 14.3Mpa, elongation at break 425%.
Using above-mentioned desulfurization powder, regeneration rubber prepared by reclaimed rubber performance prepared by the present invention and traditional refinery practice
Glue performance comparison is as follows:
Embodiment 2: being 100 parts of desulfurization powders prepared by the preliminary desulfurization of waste butyl rubber powder, 2 parts of dimethylbenzene by weight
Based bisulfide is added in the mixer for being connected with 15 DEG C of outer circulation cooling waters by mixing machine inlet, is sheared in mixer
Under the shear action of type rotor, rotor speed is controlled after 45 revs/min, mixing time 6 minutes, and discharge temperature of charge is 115
DEG C, material is continuously delivered to a bench roller away from the double roller cylinder open mill for 6mm, Bao Tonghou is cold through continuous cooling device by material
But to 40 DEG C hereinafter, obtaining prepared reclaimed rubber.Wherein, the initial sidewall temperature of mixer should at 20 DEG C, discharging side wall
Temperature should be at 85 DEG C.The initial lower top bolt temperature of mixer should be at 25 DEG C, and discharging at present, top bolt temperature should be at 95 DEG C.It is above-mentioned preliminary
The Mooney viscosity of the desulfurization powder of desulfurization preparation is 95, tensile strength 7.8Mpa, elongation at break 465%.
Using above-mentioned desulfurization powder, regeneration rubber prepared by reclaimed rubber performance prepared by the present invention and traditional refinery practice
Glue performance comparison is as follows:
Embodiment 3: being 100 parts of desulfurization powders by EP rubbers powder preliminary desulfurization preparation of giving up, 1.5 parts organic by weight
Sulfonate is added in the mixer for being connected with 20 DEG C of outer circulation cooling waters by mixing machine inlet, is turned in mixer shearing-type
Under the shear action of son, control rotor speed is at 25 revs/min, and after five minutes, discharge temperature of charge is 100 DEG C to mixing time, even
Continuous that material is delivered to a bench roller away from the double roller cylinder open mill for 7mm, material is cooled to by Bao Tonghou through continuous cooling device
40 DEG C hereinafter, obtain prepared reclaimed rubber.Wherein, the initial sidewall temperature of mixer should at 20 DEG C, discharging side wall temperatures
It should be at 70 DEG C.The initial lower top bolt temperature of mixer should be at 35 DEG C, and discharging at present, top bolt temperature should be at 80 DEG C.Above-mentioned preliminary desulfurization
The Mooney viscosity of the desulfurization powder of preparation is 90, tensile strength 5.6Mpa, elongation at break 298%.
Using above-mentioned desulfurization powder, regeneration rubber prepared by reclaimed rubber performance prepared by the present invention and traditional refinery practice
Glue performance comparison is as follows:
Described in the above specific embodiment, only to illustrate example of the invention, and not limit described in the invention
Technical solution；Therefore, although the present invention has been described in detail referring to the above embodiments, this field
It is to be appreciated by one skilled in the art that still can modify to the present invention or equivalent replacement；And all do not depart from the present invention and mention
The technical solution and its improvement of protection scope out, are intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of method for preparing reclaimed rubber using mixer kneading desulfurization powder, it is characterized in that: being 100 parts of desulfurization glues by weight
Powder, 0.1-2.5 parts of auxiliary agent is added in the mixer for being connected with outer circulation cooling water, by mixing machine inlet in mixer
Under the shear action of rotor, rotor speed is controlled after 10-50 revs/min, mixing time 2-10 minutes, and discharge temperature of charge is
60-130 DEG C, material is continuously delivered to a bench roller away from the double roller cylinder open mill for 4-8mm, Bao Tonghou is by material through continuous cold
But device is cooled to 40 DEG C hereinafter, obtaining prepared reclaimed rubber；It is adjuvant used for pentachlorothiophenol compound, aryl bisulphide,
One of organic sulfonate.
2. the method according to claim 1, it is characterized in that desulfurization powder used is through waste tyre rubber powder, waste butyl rubber, useless second
The preliminary desulfurization preparation of one of third rubber.
3. method according to claim 2, it is characterized in that the Mooney viscosity value of the desulfurization powder of preliminary desulfurization preparation is 60-160.
4. the method according to claim 1, it is characterized in that mixer mixing rotor type used should be in shearing-type or engagement type
One kind.
5. the method according to claim 1, it is characterized in that the water temperature of outer circulation water used is 5-25 DEG C.
6. the method according to claim 1, it is characterized in that the initial sidewall temperature of mixer should at 10-30 DEG C, discharging side wall
Temperature should be at 40-100 DEG C.
7. the method according to claim 1, it is characterized in that the initial lower top bolt temperature of mixer should discharge at present at 20-40 DEG C
Pushing up bolt temperature should be at 40-120 DEG C.
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| CN201610140918.5A CN105729652B (en) | 2016-03-13 | 2016-03-13 | A method of reclaimed rubber is prepared using mixer kneading desulfurization powder |
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| CN105729652B true CN105729652B (en) | 2019-04-05 |
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| CN111825990A (en) * | 2019-04-17 | 2020-10-27 | 邢台中车环保科技有限公司 | Low-Mooney viscosity reclaimed rubber particle and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798397A (en) * | 2009-02-11 | 2010-08-11 | 韩传杰 | New production process of recovered rubber |
| CN102744804A (en) * | 2012-07-25 | 2012-10-24 | 常州山水橡塑制品有限公司 | Regeneration process method for EPDM (Ethylene-Propylene-Diene Monomer) waste |
| CN103772738A (en) * | 2014-01-21 | 2014-05-07 | 浙江佰利鞋业有限公司 | Reclaiming method of reclaimed rubber and manufacturing method of rubber rain shoes by using reclaimed rubber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906217B (en) * | 2009-06-08 | 2012-07-25 | 福建环科集团三明市高科橡胶有限公司 | Environment-friendly high-quality tyre reclaimed rubber manufacturing method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798397A (en) * | 2009-02-11 | 2010-08-11 | 韩传杰 | New production process of recovered rubber |
| CN102744804A (en) * | 2012-07-25 | 2012-10-24 | 常州山水橡塑制品有限公司 | Regeneration process method for EPDM (Ethylene-Propylene-Diene Monomer) waste |
| CN103772738A (en) * | 2014-01-21 | 2014-05-07 | 浙江佰利鞋业有限公司 | Reclaiming method of reclaimed rubber and manufacturing method of rubber rain shoes by using reclaimed rubber |
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