CN101941252A - Mixing method for strengthening lower auxiliary machine of rubber internal mixer - Google Patents
Mixing method for strengthening lower auxiliary machine of rubber internal mixer Download PDFInfo
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- CN101941252A CN101941252A CN2010102705437A CN201010270543A CN101941252A CN 101941252 A CN101941252 A CN 101941252A CN 2010102705437 A CN2010102705437 A CN 2010102705437A CN 201010270543 A CN201010270543 A CN 201010270543A CN 101941252 A CN101941252 A CN 101941252A
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- 238000002156 mixing Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000005728 strengthening Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 60
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 241001441571 Hiodontidae Species 0.000 claims abstract description 3
- 238000004513 sizing Methods 0.000 claims description 112
- 239000000463 material Substances 0.000 claims description 111
- 230000008569 process Effects 0.000 claims description 45
- 239000005864 Sulphur Substances 0.000 claims description 26
- 238000005507 spraying Methods 0.000 claims description 16
- 238000013329 compounding Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000009401 outcrossing Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 17
- 238000003490 calendering Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 238000007667 floating Methods 0.000 description 8
- 238000005070 sampling Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229940105289 carbon black Drugs 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008774 maternal effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007353 oxidative pyrolysis Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
-
- 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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a mixing method for strengthening a lower auxiliary machine of a rubber internal mixer for strengthening shearing dispersion and mixing function of the lower auxiliary machine of the rubber internal mixer. In the method, a high-speed rubber internal mixer and 1 to 3 lower auxiliary mechanisms of the rubber internal mixer which are matched with the high-speed rubber internal mixer form a rubber internal mixer production line for mixing at one time. By adopting roller cooling, spray cooling and conveyer belt cooling to cooperate with a rubber cooling method, the rubber is cooled to the temperature of less than 75 DEG C. By adopting the mode of sulfur masterbatch mixing for sulfurating and mixing, the dispersion degree of the rubber at least reaches 6 level, and the Mooney viscosity reaches an acceptable index of +/-4 Mooney. The mixing method has the advantages of improving the production efficiency, improving the rubber quality, saving the energy, reducing the area of the working field and the usage of forklifts, reducing the labor intensity of operators and saving labor.
Description
Technical field
The present invention relates to the mixing technology of subsidiary engine under the banbury, specifically be meant a kind of compounding process of strengthening subsidiary engine under the banbury that the sizing material mixing process is once finished on the banbury production line.
Technical background
Since F.H Banbury has invented the Ben Baili banbury so far, mixer mixing progressively becomes the main and common mode in the modern calendering process.Initial banbury production line, generally by one at a slow speed banbury join a mill and form, after mixer mixing is finished sizing material is discharged in the mill and cools off, add sulphur and replenish mixing, this compounding process is called one section mixing method, whole mixing process is once finished on the banbury production line, the centre does not have the compressing tablet cooling and the parking period of sizing material, and this method only is applicable to that generally compound viscosity sizing material lower, that the prescription loading is less is mixing.Present banbury production line, generally join one and extrude tablet press machine or two two roll-in sheet machines are formed by a high speed banbury, the rotating speed of banbury is generally 20/40r/min, 30/45r/min or higher rotating speed, and capacity is 270 liters, 370 liters or bigger capacity.Along with the raising of rotating speed, pressure and the capacity of banbury, shear action increases, and the sizing material temperature rises sooner, usually the sizing material dust dispersion quality does not also reach requirement, and temperature has risen to the limit, reaches 160～170 ℃, so can only finish mixingly, sizing material is discharged to down carry out the cooling press sheet on the subsidiary engine.For this reason, obtain the good elastomeric compound of quality requirement, the sizing material mixing process will be finished several times.What at first carry out is slightly mixing, normally use high speed banbury (more than the 40r/min) high pressure mixing, the sizing material that makes contains the compounding ingredient except that sulphur and promoter, it is so-called carbonblack master batch, big or packing strengthening agent consumption more for a long time when the sizing material Mooney viscosity, sizing material is after the compressing tablet cooling and parking, also must second, third time in addition the 4th input banbury to carry out two sections, three sections even four sections mixing, could obtain required Mooney viscosity and decentralization, this stage is called the milling maternal rubber stage.Carbonblack master batch has obtained required Mooney viscosity and decentralization, after the compressing tablet cooling and parking, dropping at a slow speed again, banbury (20r/min or 30r/min) carries out mixing, add sulphur and promoter, at last elastomeric compound is discharged to compressing tablet cooling on the tablet press machine, finally finish whole mixture operations of sizing material, this stage is called the whole refining stage.This compounding process is commonly referred to as two sections mixing methods, the just present topmost mixing technical method of banbury production line.For tire industry, present most sizing compound formula all is to adopt this mixing technical method.
For one section mixing method, its advantage is exactly that sizing material management is more convenient, saves the bin aging area, and that its shortcoming is exactly a mixing cycle is longer, and it is inhomogeneous that sizing material disperses, the difficult control of dump temperature, and it is big to be not suitable for the mixing formula loading, the sizing material that compound viscosity is higher.With respect to one section mixing method, the advantage of two sections mixing methods is exactly that production efficiency is greatly improved, and can be fit to the sizing material of mixing various viscosity prescriptions, and by adopting automatic weighing, the operating environment sanitary condition has also obtained very big improvement.But meanwhile, because sizing material quick heating, heat radiation is slow, fillers dispersed difficulty under hot conditions, and the sizing material dust dispersion quality also has been subjected to influence, the mixing needs of sizing material are divided into two sections or multistage is mixing carries out in addition, the intermediate demand storage period, institute is so that to workshop bin aging area with manually all need to increase, sizing material is managed also difficult relatively, therefore production efficiency also be subjected to certain limitation, and energy consumption is also bigger.
Summarize existing mixer mixing technology, raising along with mixer mixing speed, supporting with it following subsidiary engine is also wanted corresponding raising the efficiency, so just make the main effect of subsidiary engine down only be left the effect of cooling compressing tablet, and shear to disperse and to replenish mixing effect just very little, briefly be exactly that banbury is sheared dispersion, following subsidiary engine cooling compressing tablet.If under the condition of existing mixer mixing speed, by strengthening the melting effect of subsidiary engine under the banbury, mixing to finish sizing material mixing by only needing one section, descends subsidiary engine need satisfy following requirement so:
1,160～170 ℃ sizing material temperature to be reduced to 100～110 ℃ of temperature, so that add sulphur or add promoter;
2, to bigger additional mixing effect be arranged to sizing material, to obtain required Mooney viscosity and the dust dispersion quality of sizing material;
3, add the dispersion that to finish behind the sulphur sulphur;
4, before the scattered back of sulphur sizing material sent sheet extruder, the decentralization of sizing material will reach quality requirement.
Therefore, strengthening subsidiary engine shearing dispersion down, replenishing mixing effect is to improve banbury production line sizing material quality, saves energy consumption, the important channel that cuts down finished cost.
Summary of the invention
The objective of the invention is to overcome the weak point of existing mixer mixing method, provide a kind of shearing of strengthening subsidiary engine under the banbury to disperse and mixing effect, make sizing material mixing at a kind of compounding process of strengthening subsidiary engine under the banbury of finishing of property once on the banbury production line.
Purpose of the present invention realizes by taking following measure:
A kind of compounding process of strengthening subsidiary engine under the banbury, it is characterized in that: select under a high speed banbury and associated 1～3 banbury subsidiary engine to constitute the disposable mixing banbury production line of finishing, the subsidiary engine shearing disperses, replenishes mixing effect in order to strengthen down, takes following measure:
(1) adopted roller cooling, spraying cooling and the collaborative sizing material cooling method of conveyer belt cooling
Describedly cross the roller cooling and be meant and be discharged to mill and carried out three times and cross roller finishing sizing material behind the mixer mixing, the preliminary roller linear velocity scope of its mill is 25～30m/min, roller coolant water temperature control range is 18～28 ℃, mill roll spacing adjustable range is: first pass is crossed roller 5～8mm, second time mistake roller 3～6mm, the 3rd time mistake roller 2～4mm;
Described spraying cooling is meant when first pass is crossed the roller cooling, adopts control spray cooling device automatically, and its operating pressure is 0.4～0.6MPa, and be 30～55s cool time, and film is cooled to 100～110 ℃;
Behind described second time mistake roller, sizing material is cooled to 85～95 ℃;
Behind described the 3rd time mistake roller, sizing material is cooled to below 75 ℃;
(2) mode of taking to add the sulphur masterbatch adds sulphur
Sizing material after first pass is crossed roller returns and adds the sulphur masterbatch when mill is carried out crossing roller second time;
(3) additional mixing
Sizing material after crossing roller second time returns mill, and to carry out crossing roller for the 3rd time mixing for replenishing, described cross roller the 3rd time after, the decentralization of sizing material reaches 6 grades at least, Mooney viscosity reaches qualified index ± 4 Mooney.
Described subsidiary engine is down selected the mill of boring smooth roll formula roller for use.
Described conveyer belt cooling, conveyer belt length is no less than 10 meters.
At last, film is delivered to by conveyer belt and is extruded tablet press machine and carry out compressing tablet, cooling, receipts glue and deposit.
The present invention compares with existing mixer mixing technology has following outstanding advantage:
1, improved production efficiency.With the tread rubber is example, general tread rubber just can be finished at the existing mixing technical three-stage mixing that needs, intermediate demand is through the cooling of twice compressing tablet and park, be no less than 4 hours by the technological requirement storage period, add mixing, receive glue, put and check equal time, finish about 2 days time of mixing needs of a sizing material, and strengthen the mixing technology of subsidiary engine under the banbury, only need just can finish the mixing of sizing material less than the time of 10min.
2, improved the sizing material quality.With the tread rubber is example, at first present mixing technology will be passed through three-stage mixing, wherein having twice is at high temperature to carry out, rubber molecular chain is subjected to mechanism to be easy to generate fracture and thermo-oxidative pyrolysis takes place, the sizing material molecular weight distribution can compare broad, micromolecular quantity can be more relatively, and the mixing sizing material of subsidiary engine only consumes primary energy under the present invention in banbury, it is also short to stand high-temperature time, machining is relatively also less, thereby its molecular weight distribution relatively will be narrow, and the mechanical property of sizing material will be got well relatively.Secondly, decentralization analysis from sizing material, present mixer mixing is unfavorable for the dispersion of sizing material because melting temperature is high, and subsidiary engine can cool off sizing material rapidly, turn roll spacing down under the present invention, mixing is to carry out under lower temperature, less roll spacing, improved shearing force, helped the dispersion of sizing material sizing material.Once more, the sulphur method of taking to add the sulphur masterbatch that adds adds sulphur, guarantees that sulphur disperses, good mixing, has also guaranteed the sizing material high-quality.
3, saved energy, reduced the use of operation site area and forklift.It still is example with the tread rubber, by adopting the mixing technology of strengthening subsidiary engine under the banbury, the mixing of glue face glue becomes one section mixing finishing from three-stage mixing, middle energy loss significantly reduces, also reduced the influence of the use of film isolating agent and interleaving agent to the sizing material quality, while has not had the compressing tablet cooling of interlude sizing material yet and has parked, and saves the use in operation place greatly, has reduced the use of forklift yet.
4, reduced operator's labour intensity, saved artificial.With the tread rubber is example, from three-stage mixing become one section mixing, reduced the operation and checkout of interlude, artificial so also just greatly minimizing, and the mixing process major part of the mixing technology of subsidiary engine can be finished under the state of control automatically under the reinforcement banbury, makes operator's labour intensity that certain decline also be arranged.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment 1
The compounding process of subsidiary engine under this reinforcement banbury selects a high speed banbury to join subsidiary engine under 1～3 banbury, selects according to the difference of selecting the banbury model for use and actual conditions.It is that subsidiary engine constitutes the disposable mixing banbury production line of finishing down that present embodiment is selected the mill of a GK-270 (20/40r/min) high speed banbury and an associated bench drill hole smooth roll formula roller, and wherein conveyer belt length is 12 meters.
Tread glue formula (quality proportioning): 3# smoke sheet rubber 50, cis-butadiene cement BR9000 50, zinc oxide 4, hard ester acid 2, protection wax 1.5, age resistor 4,020 2.5, peptizer SJ-103 0.3, precipitated silica 5, carbon black N220 55, aromatic naphtha 14, accelerator NS 1.05, sulphur 1.65
It is mixing earlier to carry out masterbatch with banbury, and the banbury rotating speed is 40r/min, floating weight pressure 0.65MPa, and calendering process is as follows:
Open down top bolt, binder removal, 168 ℃ of dump temperatures.
Rubber in the above technology comprises smoke sheet rubber and cis-butadiene cement, and small powder comprises zinc oxide, hard ester acid, protection wax, age resistor, peptizer and white carbon.
More than whole mixing process, comprise floating weight lifting equal time, amount to the about 192s of spended time.
The subsidiary engine shearing disperses, replenishes mixing effect in order to strengthen down, and the present invention takes following step and process conditions:
Step 1: sizing material cooling
Adopted roller cooling, spraying cooling and the collaborative sizing material cooling method of conveyer belt cooling will finish sizing material temperature behind the mixer mixing from 168 ℃ reduce to 108 ℃;
Mill is carried out first pass earlier and is crossed roller, and the roll spacing of mill is adjusted to 6mm, and preliminary roller linear velocity scope is 30m/min, and the process time is 60s, and the roller coolant water temperature is controlled to be 23 ± 3 ℃, and the sprayer unit operating pressure is 0.5MPa; Sprayer unit below roller to the film cooling of spraying, when the sizing material temperature more than 115 ℃ the time, the spraying cooling is carried out automatically, when the sizing material temperature is reduced to below 115 ℃, the spraying cooling stops automatically, spraying 35s cool time, film returns in the mill through conveyer belt, and the temperature of cooling back sizing material is shown as 108 ℃.
Step 2: the mode of taking to add the sulphur masterbatch adds sulphur
Sizing material after first pass is crossed roller returns mill and carried out roller second time, by automatic charging device the sulphur masterbatch that contains sulphur and promoter is joined simultaneously and carries out mixing, dispersion in the sizing material; The roll spacing of mill this moment is adjusted to 4mm, and preliminary roller linear velocity and roller coolant water temperature are constant, and the process time is 60s; After sizing material was crossed roller second time, film returned in the mill through conveyer belt, and the sizing material temperature drops to 90 ℃.
Step 3: replenish mixing
Sizing material after crossing roller second time returns mill, and to carry out crossing roller for the 3rd time mixing for replenishing, and the roll spacing of mill is adjusted to 3mm, and preliminary roller linear velocity and roller coolant water temperature are constant, and the process time is 90s; Sizing material is further mixing, disperse and cooling, cross roller the 3rd time after, sizing material decentralization and Mooney viscosity have all reached qualified index (the results are shown in Table 1), sizing material is cooled to 70 ℃.
At last, film carries out clot by the clot device, and delivers to by conveyer belt and to extrude on the tablet press machine, and sizing material carries out compressing tablet, cooling by extruding tablet press machine, film spraying interleaving agent and dry up, receive glue, and temperature was 42 ℃ when last film was parked.
Above calendering process process, the mixing time of banbury is about about 3.2min, about the about 3.5min of the mixing time of subsidiary engine, can descend the mixing of a sizing material after finishing under the banbury of reinforcement, following subsidiary engine is worked continuously, and mixing a sizing material banbury idle running is less than time half a minute.
Behind the bin aging 4 hours, sampling detects rheological property, Mooney viscosity and conventional mechanical property, and specific performance the results are shown in Table 1.
Embodiment 2
(mill of 6～60r/min) high speed banburies and associated two bench drill hole smooth roll formula rollers is that subsidiary engine constitutes the disposable mixing banbury production line of finishing down to XM-370 of the compounding process of subsidiary engine selection, and wherein conveyer belt length is 15 meters under the reinforcement banbury of present embodiment.
Tread glue formula: with embodiment 1
It is mixing earlier to carry out masterbatch with banbury, and the banbury rotating speed is 60r/min, floating weight pressure 0.7MPa, and calendering process is as follows:
Open down top bolt, binder removal, 170 ℃ of dump temperatures.
More than whole mixing process, comprise floating weight lifting equal time, amount to the about 155s of spended time.
Behind the intact first part of sizing material of mixer mixing, sizing material enters subsidiary engine mill under first platform through depositing to connect to coil, and the subsidiary engine shearing disperses, replenishes mixing effect in order to strengthen down, and the present invention takes following step and process conditions:
Step 1: sizing material cooling
Adopted roller cooling, spraying cooling and the collaborative sizing material cooling method of conveyer belt cooling will finish sizing material temperature behind the mixer mixing from 170 ℃ reduce to 110 ℃;
Mill is carried out first pass earlier and is crossed roller, and the roll spacing of mill is adjusted to 6mm, and preliminary roller linear velocity scope is 30m/min, and the process time is 80s, 23 ± 3 ℃ of roller coolant water temperature controls, and the sprayer unit operating pressure is 0.5MPa; Sprayer unit below roller to the film cooling of spraying, when the sizing material temperature more than 115 ℃ the time, the spraying cooling is carried out automatically, when the sizing material temperature is reduced to below 115 ℃, the spraying cooling stops automatically, spraying 40s cool time, film returns in the mill through conveyer belt, and the temperature of cooling back sizing material is shown as 110 ℃.
Step 2: the mode of taking to add the sulphur masterbatch adds sulphur
Sizing material after first pass is crossed roller returns mill and carried out roller second time, by automatic charging device the sulphur masterbatch that contains sulphur and promoter is joined simultaneously and carries out mixing, dispersion in the sizing material; The roll spacing of mill this moment is adjusted to 4mm, and preliminary roller linear velocity and roller coolant water temperature are constant, and the process time is 80s; After sizing material was crossed roller second time, film returned in the mill through conveyer belt, and the sizing material temperature drops to 92 ℃.
Step 3: replenish mixing
Sizing material after crossing roller second time returns mill, and to carry out crossing roller for the 3rd time mixing for replenishing, and the roll spacing of mill is adjusted to 3mm, and preliminary roller linear velocity and roller coolant water temperature are constant, process time 110s; Sizing material is further mixing, disperse and cooling, cross roller the 3rd time after, sizing material decentralization and Mooney viscosity have all reached qualified index (the results are shown in Table 1), sizing material is cooled to 73 ℃.
At last, film carries out clot by the clot device, and delivers to by conveyer belt and to extrude on the tablet press machine, and sizing material carries out compressing tablet, cooling by extruding tablet press machine, film spraying interleaving agent and dry up, receive glue, and temperature was 43 ℃ when last film was parked.
Behind the intact second part of sizing material of mixer mixing, sizing material enters subsidiary engine mill under second platform through depositing to connect to coil, and takes mixing step and the process conditions identical with subsidiary engine under first platform to finish the mixing of second part of sizing material.
Above calendering process process, about about 5min of time of two parts of sizing materials of mixer mixing, under the banbury of strengthening about about 4.5min of subsidiary engine glue stuff compounding time, banbury is finished a sizing material can enter down the mixing of a sizing material at once, following pact half a minute subsidiary engine idle period after mixing.Certainly, the process time of following subsidiary engine also is not limited thereto, also can be by regulating the preliminary roller linear velocity and according to subsidiary engine mixing time under the quality situation proper extension, reducing the idle period of subsidiary engine down.
Behind the bin aging 4 hours, sampling detects proportion, rheological property, Mooney viscosity and conventional mechanical property, and specific performance the results are shown in Table 1.
Comparative Examples 1
Adopt GK-270 banbury production line, finish the mixing of tread rubber with two sections mixing methods of existing mixing technology.Concrete calendering process is as follows:
Tread glue formula: with embodiment 1
One section of banbury is mixing: process conditions and calendering process are with the mixer mixing of embodiment 1, and dump temperature records 167 ℃, and sizing material is through extruding tablet press machine compressing tablet, cooling, and film sprays interleaving agent, dries up, receives glue, parks.The sizing material code name is designated as M1, parks sampling detection proportion after 4 hours.
The banbury two-stage mixing, banbury rotating speed 40r/min, floating weight blast 0.68MPa, calendering process is as follows:
Open down top bolt, binder removal, 148 ℃ of dump temperatures, sizing material is through extruding tablet press machine compressing tablet, cooling, and film sprays interleaving agent, dries up, receives glue, parks.The sizing material code name is designated as M2, parks sampling detection Mooney viscosity after 4 hours.
The banbury terminal section is mixing, banbury rotating speed 20r/min, and floating weight blast 0.48MPa, calendering process is as follows:
Open down top bolt, binder removal, 105 ℃ of dump temperatures, sizing material is crossed roller through first two roller tablet press machine earlier and is dispelled the heat for three times, send second two roller tablet press machine to carry out compressing tablet, cooling again, film sprays interleaving agent, dries up, receives glue, the sizing material temperature is 43 ℃ when parking, and sizing material is carried out sign, is labeled as to add the sulphur state.
Behind the bin aging 4 hours, sampling detects proportion, rheological property, Mooney viscosity and conventional mechanical property, and specific performance the results are shown in Table 1.
Comparative Examples 2
Adopt XM-370 banbury production line, finish the mixing of tread rubber with two sections mixing methods of existing mixing technology.Concrete calendering process is as follows:
Tread glue formula: with embodiment 1
One section of banbury is mixing: process conditions and calendering process are with the mixer mixing of embodiment 2, and dump temperature records 169 ℃, and sizing material is through extruding tablet press machine compressing tablet, cooling, and film sprays interleaving agent, dries up, receives glue, parks.The sizing material code name is designated as M1, parks sampling detection proportion after 4 hours.
The banbury two-stage mixing, banbury rotating speed 60r/min, floating weight blast 0.7MPa, calendering process is as follows:
Open down top bolt, binder removal, 147 ℃ of dump temperatures, sizing material is through extruding tablet press machine compressing tablet, cooling, and film sprays interleaving agent, dries up, receives glue, parks.The sizing material code name is designated as M2, parks sampling detection Mooney viscosity after 4 hours.
The banbury terminal section is mixing, banbury rotating speed 30r/min, and floating weight blast 0.5MPa, calendering process is as follows:
Open down top bolt, binder removal, 105 ℃ of dump temperatures, sizing material are crossed roller through first two roller tablet press machine earlier and are dispelled the heat for three times, send second two roller tablet press machine to carry out compressing tablet, cooling again, film sprays interleaving agent, dries up, and the sizing material temperature is 42 ℃ when parking, sizing material is carried out sign, is labeled as to add the sulphur state.
Behind the bin aging 4 hours, sampling detects proportion, rheological property, Mooney viscosity and conventional mechanical property, and specific performance the results are shown in Table 1
Embodiment and Comparative Examples performance comparison result:
Above embodiment is to adopt identical tread glue formula with Comparative Examples, and the performance of embodiment 1,2 obviously is better than Comparative Examples 1,2.As can be seen from Table 1, the Mooney viscosity of embodiment 1,2 is higher slightly than Comparative Examples 1,2, stretching strength, hot strength and tearing strength are all good than Comparative Examples 1,2, Here it is because after adopting the mixing technology of strengthening subsidiary engine under the banbury, the situation that the strand of elastomeric compound is subjected to hot oxygen destruction and mechanical damage obtains reducing, so intensity is improved; Equally, because elastomeric compound experience high-temperature time reduces, the rheological property of embodiment 1,2 is also good than Comparative Examples 1,2, reduces the incipient scorch tendency of sizing material; Deployment conditions, the CB decentralization of embodiment 1,2 and Comparative Examples 1,2 all reaches more than 6 grades, and decentralization is more approaching, the deployment conditions ideal.
Analyze from another point of view, take to strengthen the mixing technology of subsidiary engine under the banbury, mix quality is improved, also make mixing process once finish, reduce the mixing of interlude, saved energy and artificial, improved production efficiency, reduced the operation site area, the income of bringing is huge.
Table 1
Claims (3)
1. compounding process of strengthening subsidiary engine under the banbury, it is characterized in that: select under a high speed banbury and associated 1～3 banbury subsidiary engine to constitute the disposable mixing banbury production line of finishing, the subsidiary engine shearing disperses, replenishes mixing effect in order to strengthen down, takes following measure:
(1) adopted roller cooling, spraying cooling and the collaborative sizing material cooling method of conveyer belt cooling
Describedly cross the roller cooling and be meant and be discharged to mill and carried out three times and cross roller finishing sizing material behind the mixer mixing, the preliminary roller linear velocity scope of its mill is 25～30m/min, roller coolant water temperature control range is 18～28 ℃, mill roll spacing adjustable range is: first pass is crossed roller 5～8mm, second time mistake roller 3～6mm, the 3rd time mistake roller 2～4mm;
Described spraying cooling is meant when first pass is crossed the roller cooling, adopts control spray cooling device automatically, and its operating pressure is 0.4～0.6MPa, and be 30～55s cool time, and film is cooled to 100～110 ℃;
Behind described second time mistake roller, sizing material is cooled to 85～95 ℃;
Behind described the 3rd time mistake roller, sizing material is cooled to below 75 ℃;
(2) mode of taking to add the sulphur masterbatch adds sulphur
Sizing material after first pass is crossed roller returns and adds the sulphur masterbatch when mill is carried out crossing roller second time;
(3) additional mixing
Sizing material after crossing roller second time returns mill, and to carry out crossing roller for the 3rd time mixing for replenishing, described cross roller the 3rd time after, the decentralization of sizing material reaches 6 grades at least, Mooney viscosity reaches qualified index ± 4 Mooney.
2. a kind of compounding process of strengthening subsidiary engine under the banbury according to claim 1 is characterized in that: described subsidiary engine is down selected the mill of boring smooth roll formula roller for use.
3. a kind of compounding process of strengthening subsidiary engine under the banbury according to claim 1 is characterized in that: described conveyer belt cooling, conveyer belt length is no less than 10 meters.
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| CN201010270543.7A CN101941252B (en) | 2010-09-02 | 2010-09-02 | A kind of compounding process strengthening Mixer Down-stream Eqiupment |
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| CN101941252B CN101941252B (en) | 2015-11-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105750142A (en) * | 2016-04-20 | 2016-07-13 | 江苏通用科技股份有限公司 | Internal mixer down stream equipment system and spraying technology of parting agent |
| CN105728248B (en) * | 2016-04-20 | 2018-06-26 | 江苏通用科技股份有限公司 | A kind of spraying process of mixing workshop interleaving agent |
| CN108858849A (en) * | 2018-08-01 | 2018-11-23 | 浦林成山（山东）轮胎有限公司 | A kind of mixing refining gluing method and equipment |
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| JP2003062830A (en) * | 2001-08-28 | 2003-03-05 | Matsushita Electric Works Ltd | Method and apparatus for cooling kneaded resin mixture |
| US20040125687A1 (en) * | 2002-07-12 | 2004-07-01 | Julius Peter | Method of producing rubber mixtures |
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| JP2003062830A (en) * | 2001-08-28 | 2003-03-05 | Matsushita Electric Works Ltd | Method and apparatus for cooling kneaded resin mixture |
| US20040125687A1 (en) * | 2002-07-12 | 2004-07-01 | Julius Peter | Method of producing rubber mixtures |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105750142A (en) * | 2016-04-20 | 2016-07-13 | 江苏通用科技股份有限公司 | Internal mixer down stream equipment system and spraying technology of parting agent |
| CN105728248B (en) * | 2016-04-20 | 2018-06-26 | 江苏通用科技股份有限公司 | A kind of spraying process of mixing workshop interleaving agent |
| CN105750142B (en) * | 2016-04-20 | 2018-06-26 | 江苏通用科技股份有限公司 | A kind of spraying process of interleaving agent |
| CN108858849A (en) * | 2018-08-01 | 2018-11-23 | 浦林成山（山东）轮胎有限公司 | A kind of mixing refining gluing method and equipment |
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| Publication number | Publication date |
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| CN101941252B (en) | 2015-11-25 |
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