CN117343406A - High-filling white carbon black reinforced sizing material and preparation method thereof - Google Patents
High-filling white carbon black reinforced sizing material and preparation method thereof Download PDFInfo
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- CN117343406A CN117343406A CN202311335456.9A CN202311335456A CN117343406A CN 117343406 A CN117343406 A CN 117343406A CN 202311335456 A CN202311335456 A CN 202311335456A CN 117343406 A CN117343406 A CN 117343406A
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- carbon black
- screw extruder
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- filling
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- 239000000463 material Substances 0.000 title claims abstract description 99
- 239000006229 carbon black Substances 0.000 title claims abstract description 58
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000004513 sizing Methods 0.000 title claims abstract description 43
- 238000011049 filling Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920001971 elastomer Polymers 0.000 claims abstract description 30
- 239000005060 rubber Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000004014 plasticizer Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 239000005062 Polybutadiene Substances 0.000 claims description 4
- 229920002857 polybutadiene Polymers 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 3
- 239000000945 filler Substances 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 22
- 238000002444 silanisation Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000007599 discharging Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006884 silylation reaction Methods 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- VILGDADBAQFRJE-UHFFFAOYSA-N n,n-bis(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SN(SC=3SC4=CC=CC=C4N=3)C(C)(C)C)=NC2=C1 VILGDADBAQFRJE-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- 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
- C08K5/54—Silicon-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a high-filling white carbon black reinforced sizing material and a preparation method thereof, raw rubber, white carbon black, a silane coupling agent, a plasticizer, an anti-aging agent, an accelerator and the like are added into an internal mixer according to a certain proportion to be mixed, the mixture enters a first screw extruder through a continuous conveying device to be preheated and mixed, the feeding stability is ensured, the materials are conveyed into a second screw extruder, the good temperature control performance of the screw extruder is utilized, the sizing material can complete silanization reaction at a constant temperature, and after entering a third screw extruder, the cooling process of the sizing material is completed by utilizing the good heat transfer effect of single screw equipment and the sizing material is extruded into sheets. Compared with the method for preparing the high-filling white carbon black reinforced sizing material by adopting the multi-stage mixing method of the internal mixer, the method has the advantages of low production energy consumption, easily controlled temperature in the production process, stable reaction process, simple equipment and the like, and meanwhile, the production efficiency is high, and the product performance is more uniform and stable.
Description
Technical Field
The invention relates to the field of chemical materials, in particular to a high-filling white carbon black reinforcing sizing material and a preparation method thereof.
Background
In 1992, michelin proposed the concept of "green tires", and since then white carbon black has been increasingly used in tires. Compared with the carbon black reinforced rubber material, the rubber material reinforced by the white carbon black has more excellent performance, not only can obviously reduce the rolling resistance of the tire and reduce the oil consumption, but also improves the wet grip performance of the tire, so that the application of the white carbon black to the rubber material is an important direction for developing the green environment-friendly tire. However, white carbon black has a large number of hydroxyl groups on the surface, has strong polarity, and is very easy to form hydrogen bonds among particles so as to generate flocculation phenomenon, so that interaction between the white carbon black and nonpolar rubber is difficult to occur. Therefore, in actual industrial production, a silane coupling agent is often used for carrying out chemical modification on the surface of the white carbon black, on one hand, the coupling agent can carry out silanization reaction with hydroxyl groups on the surface of the white carbon black and combine with the surface of the white carbon black, on the other hand, the coupling agent can carry out coupling with rubber, and through the two reactions, chemical bridging is generated between the white carbon black and the rubber, and the reinforcing effect of the white carbon black is obviously improved.
In order to realize high filling of the white carbon black in the rubber sizing material, the prior industrial production mainly adopts a process method of multi-section mixing (6-8 sections) of an internal mixer, through repeated mixing, the silanization reaction can be fully carried out, the dispersity of the white carbon black in the sizing material is ensured, and meanwhile, the problems of rapid temperature rise and excessive oxidative degradation of the sizing material caused by long-time high-temperature mixing are avoided. However, the process method has a certain problem that the production efficiency is not high because the temperature of the sizing material is raised and lowered during each section of mixing, and the process has higher operation control requirement and the quality of the product is difficult to ensure. Therefore, zhang Liqun et al (CN 102825674B, a continuous extrusion device and method for in-situ modified mixing of high-filling white carbon black) propose a device and method for multi-section mixing of a multi-stage screw extruder instead of an internal mixer, wherein the device is formed by combining one set of internal mixer and 1-10 sets of screw extruder units, each set of screw extruder units is formed by connecting 1 screw extruder or 2-10 screw extruders which are in butt joint end to end through a machine head side in series, and the device has the advantages that the temperature control effect of the screw extruder is stronger than that of the internal mixer, the rubber material subjected to primary mixing of the internal mixer can carry out silanization reaction at relatively constant temperature, and the production efficiency is obviously improved. However, the single screw extruder and the anisotropic parallel double screw extruder which are alternatively used in the set have poor capability of mixing materials, can not provide good supplementary mixing effect for the materials after being mixed by the primary internal mixer, have different temperature control effects as the direct double screw extruder, have no special exhaust structure and are not beneficial to timely removal of waste gas in the reaction process. Thus, improvements in the prior art solutions are needed.
Disclosure of Invention
The invention provides a high-filling white carbon black reinforcing sizing material and a preparation method thereof, which are used for solving or at least relieving at least one problem existing in the prior art.
The invention provides a preparation method of a high-filling white carbon black reinforced sizing material, which comprises the following steps:
adding 100 parts of raw rubber, 50-100 parts of white carbon black, 4-14 parts of silane coupling agent, 0-10 parts of plasticizer, 0-5 parts of anti-aging agent and 0-6 parts of accelerator into an internal mixer, conveying the materials into a first screw extruder after mixing, controlling the temperature of the first screw extruder to be 100-140 ℃, obtaining materials with Mooney viscosity of 80-110 after 2-5 min, conveying the materials into a second screw extruder through a conveying device, controlling the temperature of the second screw extruder to be 120-160 ℃, finishing the silanization reaction for 3-7 min, obtaining materials with Mooney viscosity of 60-100, conveying the materials into a third screw extruder, controlling the temperature of the third screw extruder to be 30-60 ℃, cooling the materials and extruding the materials into pieces after 2-4 min, and obtaining the high-filling white carbon black reinforcing sizing material with Mooney viscosity of 40-80.
As a preferred embodiment of the present invention, the raw rubber includes at least one of natural rubber, styrene-butadiene rubber and butadiene rubber.
As a preferred embodiment of the present invention, the silane coupling agent includes at least one of TESPT and TESPD.
As a preferred embodiment of the present invention, the plasticizer includes an environmentally friendly aromatic oil.
As a preferred embodiment of the present invention, the anti-aging agent includes 4010, DNP, and 264.
As a preferred embodiment of the present invention, the accelerators are DPG, NS and TBSI.
As a preferable implementation mode of the invention, the internal mixer is a meshed internal mixer, the rotor rotating speed is 40-90 r/min, the filling coefficient is 0.2-0.6, the mixing time is 150-450 s, and the upper ram pressure is 5-8 kg/cm 2 。
As a preferred embodiment of the present invention, the first screw extruder is a single screw extruder, the aspect ratio is (18-30): 1, and the screw rotation speed is 35-60 r/min.
As a preferred embodiment of the present invention, the second screw extruder is a co-rotating twin screw extruder, wherein the length-diameter ratio of the screw is (28-40): 1, and the rotational speed of the screw is 50-100 r/min.
As a preferred embodiment of the present invention, a vent outlet is provided on the side of each barrel of the second screw extruder.
In a preferred embodiment of the present invention, the third screw extruder is a single screw extruder, wherein the length-diameter ratio of the screw is (16-28): 1, and the rotational speed of the screw is 30-60 r/min.
As a preferred embodiment of the present invention, the first barrel side of the third screw extruder is provided with a vent.
According to the invention, the exhaust port is arranged on the side surface of each section of machine barrel of the second screw extruder, so that the ethanol which is the product of the silanization reaction can be smoothly discharged, the reaction can be fully carried out, more sizing materials can bridge with the white carbon black, the white carbon black is more uniformly dispersed, and the reinforcing effect is good. Because the temperature of the material is higher just when the material enters the third screw extruder, the silanization reaction still can be continued to generate ethanol, and therefore, the exhaust port can be arranged on the side surface of the first section of machine barrel of the third screw extruder and even on the side surface of each section of machine barrel of the third screw extruder, the further removal of micromolecular substances and the cooling of the material are realized, and the stable extrusion of the material is ensured. In addition, the exhaust port can be externally connected with a vacuum pump, and the product ethanol of the silylation reaction can be timely pumped out. Thereby promoting the forward progress of the reaction and leading more white carbon black to be capable of generating chemical bridging with rubber.
The invention provides a high-filling white carbon black reinforcing sizing material, which is characterized in that the high-filling white carbon black reinforcing sizing material is prepared by the preparation method of the high-filling white carbon black reinforcing sizing material.
Compared with the prior art, the invention has at least the following beneficial effects:
the white carbon black and the rubber material are difficult to generate strong interaction, in order to ensure uniform mixing and good reinforcing effect, raw rubber, white carbon black and various processing aids are firstly put into an internal mixer for mixing, preliminary mixing among materials is realized, the Mooney viscosity of the rubber material is effectively reduced, and the subsequent feeding of the screw extruder is facilitated. After the material enters the first single screw extruder, the temperature of the screw is adjusted, and the material is preheated, so that the temperature of the material is kept consistent integrally, the follow-up silanization reaction is facilitated, and meanwhile, the feeding is stabilized. When the material gets into the second double screw extruder, through reasonable control screw temperature, adjust screw rotating speed, promote the further dispersion of sizing material and white carbon black on the one hand, exert its effect of supplementary mixing, on the other hand provides suitable temperature for the silylation reaction, simultaneously through the gas vent of side, in time take out the result ethanol of silylation reaction to promote this reaction forward direction, let more white carbon black can take place chemical bridging with rubber. And the fully reacted materials enter a third single-screw extruder, the cooling temperature and the position of an exhaust port are reasonably set, the temperature of the materials is reduced, the small molecular substances are further removed, and the stable extrusion of the materials is ensured.
The invention is based on the current development situation of industry, and adopts a combination mode of an internal mixer and a screw extruder to realize the high-filling white carbon black reinforced rubber. Compared with the multistage mixing process of an internal mixer, the co-rotating double-screw extruder has more excellent temperature control performance, and also has a certain supplementary mixing function, thereby being more beneficial to the reaction of the white carbon black and the silane coupling agent. On the basis of finite element analysis and calculation of dynamic friction coefficients of materials and screws, reasonable configuration and design of power, torque, abrasion and the like of a homodromous double-screw extruder can be realized, the whole set of process equipment can finish reinforcing of white carbon black on the rubber material in a short time, the silanization reaction completion degree is high, the processing time is short, the production efficiency is high, the energy consumption is low, the finally obtained rubber material not only has high content of white carbon black, but also has lower mooney viscosity, the subsequent processing and forming of the rubber material are facilitated, and the method can contribute to development and manufacturing of green tires.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below. The present invention provides exemplary embodiments, however, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Unless specifically stated otherwise, the reagents, methods and apparatus employed in the present invention are those conventional in the art.
Example 1
Adding 100 parts by mass of natural rubber, 60 parts by mass of white carbon black, 7 parts by mass of silane coupling agent, 2 parts by mass of plasticizer, 2 parts by mass of anti-aging agent and 2 parts by mass of accelerator into an internal mixer, wherein the rotation speed of a rotor of the internal mixer is 55r/min, the filling coefficient is 0.4, the mixing time is 260s, and the upper ram pressure is 6kg/cm 2 Discharging materials after mixing, feeding the materials into a first screw extruder through a continuous conveying device, wherein the length-diameter ratio of the screw is 24:1, the rotating speed of the screw is 45r/min,the temperature was controlled at 120℃and the material with a Mooney viscosity of 90 was discharged. Entering a second screw extruder through a conveying device, wherein the length-diameter ratio of the screw is 36:1, controlling the rotation speed of a screw to be 75r/min, controlling the temperature to be 130 ℃ and exhausting through an exhaust port, finishing the silanization reaction within 5min, extruding a sizing material with the Mooney viscosity of 78, and feeding the sizing material into a third screw extruder, wherein the length-diameter ratio of the screw is 20:1, the screw speed is 42r/min, the temperature is controlled to be 45 ℃, the sizing material is cooled and extruded into a sheet, and the Mooney viscosity of the sizing material is 72.
Example 2
Adding 100 parts by mass of styrene-butadiene rubber, 50 parts by mass of white carbon black, 6 parts by mass of silane coupling agent, 4 parts by mass of plasticizer, 1 part by mass of anti-aging agent and 4 parts by mass of accelerator into an internal mixer, wherein the rotating speed of a rotor of the internal mixer is 90r/min, the filling coefficient is 0.6, the mixing time is 320s, and the upper ram pressure is 5kg/cm 2 Discharging materials after mixing, feeding the materials into a first screw extruder through a continuous conveying device, wherein the length-diameter ratio of the screws is 30:1, the rotating speed of the screws is 60r/min, the temperature is controlled at 110 ℃, and discharging the materials with the Mooney viscosity of 80. Entering a second screw extruder through a conveying device, wherein the length-diameter ratio of the screw is 40:1, controlling the rotation speed of a screw to be 100r/min, controlling the temperature to be 140 ℃ and exhausting through an exhaust port, finishing the silanization reaction within 5min, extruding a sizing material with the Mooney viscosity of 70, and feeding the sizing material into a third screw extruder, wherein the length-diameter ratio of the screw is 22:1, the screw speed is 45r/min, the temperature is controlled to be 35 ℃, the sizing material is cooled and extruded into a sheet, and the Mooney viscosity of the sizing material is 65.
Example 3
100 parts of butadiene rubber, 70 parts of white carbon black, 4 parts of silane coupling agent, 6 parts of plasticizer, 3 parts of anti-aging agent and 6 parts of accelerator are added into an internal mixer, the rotor speed of the internal mixer is 65r/min, the filling coefficient is 0.5, the mixing time is 450s, and the upper top bolt pressure is 7kg/cm 2 Discharging materials after mixing, feeding the materials into a first screw extruder through a continuous conveying device, wherein the length-diameter ratio of the screws is 26:1, the rotating speed of the screws is 54r/min, controlling the temperature at 100 ℃, and discharging the materials with the Mooney viscosity at 95. Entering a second screw extruder through a conveying device, wherein the length-diameter ratio of the screw is 28:1, the rotating speed of the screw is 50r/min, the temperature is controlled at 160 ℃ andand (3) exhausting through an exhaust port, finishing the silanization reaction within 6min, extruding the rubber material with the Mooney viscosity of 80, entering a third screw extruder, exhausting through the exhaust port, wherein the length-diameter ratio of the screw is 24:1, the rotating speed of the screw is 35r/min, controlling the temperature to be 55 ℃, cooling the rubber material, extruding the rubber material into a sheet, and the Mooney viscosity of the rubber material is 75.
Example 4
100 parts of butadiene rubber, 80 parts of white carbon black, 10 parts of silane coupling agent, 8 parts of plasticizer, 5 parts of anti-aging agent and 3 parts of accelerator are added into an internal mixer, the rotor speed of the internal mixer is 40r/min, the filling coefficient is 0.2, the mixing time is 150s, and the upper top bolt pressure is 8kg/cm 2 Discharging materials after mixing, and feeding the materials into a first screw extruder through a continuous conveying device, wherein the length-diameter ratio of the screw is 18:1, the rotating speed of the screw is 35r/min, the temperature is controlled at 140 ℃, and the material with the Mooney viscosity of 110 is discharged. Entering a second screw extruder through a conveying device, wherein the length-diameter ratio of the screw is 32:1, controlling the rotation speed of a screw rod to be 85r/min, controlling the temperature to be 120 ℃ and exhausting the air through an exhaust port, finishing the silanization reaction within 7min, extruding a sizing material with the Mooney viscosity of 80, and feeding the sizing material into a third screw extruder, wherein the length-diameter ratio of the screw rod is 28:1, the screw speed is 60r/min, the temperature is controlled to be 40 ℃, the sizing material is cooled and extruded into a sheet, and the Mooney viscosity of the sizing material is 80.
According to the invention, raw rubber, white carbon black, a silane coupling agent, a plasticizer, an anti-aging agent, an accelerator and the like are added into an internal mixer according to a certain proportion to be mixed, the mixture enters a first screw extruder through a continuous conveying device to be preheated and mixed, the feeding stability is ensured, the materials are conveyed into a second screw extruder, the rubber material can complete the silanization reaction at a constant temperature by utilizing the good temperature control performance of the screw extruder, and after entering a third screw extruder, the cooling process of the rubber material is completed by utilizing the good heat transfer effect of single screw equipment and the rubber material is extruded into sheets. Compared with the method for preparing the high-filling white carbon black reinforced sizing material by adopting the multi-stage mixing method of the internal mixer, the method has the advantages of low production energy consumption, easily controlled temperature in the production process, stable reaction process, simple equipment and the like, and meanwhile, the production efficiency is high, and the product performance is more uniform and stable.
It should be appreciated that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the invention should not be interpreted as reflecting the intention: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The foregoing is merely illustrative of the embodiments of the present invention and is not intended to be limiting in any way or nature, and it should be noted that modifications and additions to the ordinary skill in the art without departing from the method of the present invention are also contemplated as falling within the scope of the present invention; equivalent embodiments of the present invention will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, and modifications, to which the invention pertains; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the protection scope of the present invention.
Claims (10)
1. The preparation method of the high-filling white carbon black reinforced sizing material is characterized by comprising the following steps:
adding 100 parts of raw rubber, 50-100 parts of white carbon black, 4-14 parts of silane coupling agent, 0-10 parts of plasticizer, 0-5 parts of anti-aging agent and 0-6 parts of accelerator into an internal mixer, conveying the materials into a first screw extruder after mixing, controlling the temperature of the first screw extruder to be 100-140 ℃, conveying the materials into a second screw extruder after 2-5 min, controlling the temperature of the second screw extruder to be 120-160 ℃, conveying the materials into a third screw extruder after 3-7 min, controlling the temperature of the third screw extruder to be 30-60 ℃, and extruding to obtain the high-filling white carbon black reinforced sizing material after 2-4 min.
2. The method for preparing a high-filler white carbon black reinforcing compound according to claim 1, wherein the raw rubber comprises at least one of natural rubber, styrene-butadiene rubber and butadiene rubber.
3. The method for preparing a high-filler white carbon black reinforcing compound according to claim 1, wherein the silane coupling agent comprises at least one of TESPT and TESPD.
4. The method for preparing the high-filling white carbon black reinforced sizing material according to claim 1, wherein the internal mixer is a meshed internal mixer, the rotor rotating speed is 40-90 r/min, the filling coefficient is 0.2-0.6, the mixing time is 150-450 s, and the upper ram pressure is 5-8 kg/cm 2 。
5. The method for preparing the high-filling white carbon black reinforced sizing material according to claim 1, wherein the first screw extruder is a single screw extruder, the length-diameter ratio is (18-30): 1, and the screw rotating speed is 35-60 r/min.
6. The method for preparing the high-filling white carbon black reinforced sizing material according to claim 1, wherein the second screw extruder is a homodromous double screw extruder, the length-diameter ratio is (28-40): 1, and the screw rotating speed is 50-100 r/min.
7. The method for preparing a high-filling white carbon black reinforced sizing material according to claim 6, wherein an exhaust outlet is arranged on the side surface of each section of cylinder of the second screw extruder.
8. The method for preparing the high-filling white carbon black reinforced sizing material according to claim 1, wherein the third screw extruder is a single screw extruder, the length-diameter ratio is (16-28): 1, and the screw rotating speed is 30-60 r/min.
9. The method for producing a highly filled white carbon black reinforced compound according to any one of claims 1 to 8, wherein the side surface of the first section of the third screw extruder is provided with an exhaust port.
10. The high-filling white carbon black reinforcing sizing material is characterized in that the high-filling white carbon black reinforcing sizing material is prepared by the preparation method of the high-filling white carbon black reinforcing sizing material according to any one of claims 1 to 9.
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| CN202311335456.9A CN117343406A (en) | 2023-10-16 | 2023-10-16 | High-filling white carbon black reinforced sizing material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311335456.9A CN117343406A (en) | 2023-10-16 | 2023-10-16 | High-filling white carbon black reinforced sizing material and preparation method thereof |
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