High-fluidity resin grafting modification production device

Abstract

The invention belongs to the technical field of polymer material modification, and discloses a high-fluidity resin graft modification production device, which comprises a reaction kettle, a granulator, an auxiliary material mechanism, a stirring mechanism, a protection mechanism, a vacuum mechanism and a temperature control mechanism, and is characterized in that the auxiliary material mechanism is communicated with the reaction kettle and is used for inputting an auxiliary material solution into the reaction kettle; the stirring mechanism comprises a first driving part and a first stirring paddle, the first stirring paddle is arranged in the reaction kettle, and the first driving part is used for driving the first stirring paddle to rotate; the protection mechanism is communicated with the reaction kettle and is used for inputting inert gas into the reaction kettle; the vacuum mechanism is communicated with the reaction kettle and is used for forming negative pressure in the reaction kettle; the temperature control mechanism comprises a heating assembly and a cooling assembly which are respectively thermally coupled with the reaction kettle so as to accurately regulate and control the temperature of a reaction system in the kettle; wherein the number of the reaction kettles is at least two, a discharge port of each reaction kettle is communicated with an inlet of the pelletizer, and the reaction periods of the reaction kettles are sequentially arranged in a staggered manner so as to alternately supply molten resin to the pelletizer.

Description

Technical Field

[0001] This invention relates to the field of polymer material modification technology, and in particular to a production apparatus for grafting and modifying high-flowability resins. Background Technology

[0002] Polyethylene wax and polypropylene wax contain only non-polar carbon chains in their molecular structure, resulting in poor compatibility with polar polymers and pigments. When used in printing, dyeing, and coatings, they are prone to uneven dispersion, uneven dyeing, and insufficient color fastness, severely limiting their application effectiveness. Similarly, although C5 and C9 hydrogenated petroleum resins have improved appearance through hydrogenation, their non-polar molecular structure limits intermolecular forces during bonding of polar materials, leading to low bond strength and making it difficult to meet the requirements of hot melt adhesives and liquid adhesive tackifiers.

[0003] Currently, the industry commonly employs grafting modification technology. By introducing polar monomers such as maleic anhydride into the polymer molecular chain, polar groups such as C=O and COOH are successfully incorporated, thereby significantly adjusting the material's polarity. This modification method can effectively improve the compatibility, dispersibility, and lubrication properties of polypropylene waxes, and improve dyeing uniformity and color fastness during the printing and dyeing process. Simultaneously, it can enhance the adhesive strength of hydrogenated petroleum resins, making them more suitable for applications such as hot melt adhesives and liquid adhesive tackifiers, thus broadening the application range of such polymer materials in printing and dyeing, coatings, adhesives, and other fields.

[0004] However, the current mainstream method for graft modification of polyolefins uses twin-screw melt extrusion. Due to equipment limitations, the material residence time during the grafting reaction is relatively short, resulting in an effective grafting rate generally below 1.0%, which is insufficient to meet the demands of high-end applications. Furthermore, polar monomers that do not participate in the grafting reaction are prone to remain in the final product. Excessive residue can lead to a strong odor, decreased stability, and may even release harmful substances in subsequent applications (such as coating film formation and adhesive bonding), affecting the product's environmental friendliness and safety. Existing processes also suffer from low production efficiency and poor product quality consistency, resulting in insufficient performance stability of domestically produced grades, making it difficult to replace imported materials in high-end applications and hindering the localization process in related industries.

[0005] Therefore, there is an urgent need to develop a high-flowability resin grafting modification production device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a high-flowability resin grafting modification production device that can continuously and efficiently produce high-grafting-rate, low-odor, high-flowability resin, ensuring consistent product quality and achieving large-scale production.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-flowability resin grafting modification production apparatus, comprising:

[0009] Reactor and granulator;

[0010] An auxiliary material feeding mechanism, connected to the reaction vessel, is used to feed an auxiliary material solution into the reaction vessel;

[0011] The stirring mechanism includes a first driving member and a first stirring paddle. The first stirring paddle is disposed inside the reaction vessel. The output end of the first driving member is connected to the first stirring paddle in a transmission connection to drive the first stirring paddle to rotate.

[0012] A protective mechanism, connected to the reactor, is used to introduce inert gas into the reactor;

[0013] A vacuum mechanism, connected to the reactor, is used to create a negative pressure inside the reactor.

[0014] The temperature control mechanism includes a heating component and a cooling component, both of which are thermally coupled to the reactor.

[0015] The reactors are at least two in number, and the outlet of each reactor is connected to the inlet of the granulator. The reaction cycles of each reactor are staggered to alternately supply molten resin to the granulator.

[0016] In some optional embodiments, the high-flowability resin grafting modification production apparatus further includes a feed pipe with a jacketed wall, wherein a heat-conducting medium flows through the jacket, and the feed pipe is connected between the outlet of the reactor and the inlet of the granulator.

[0017] In some alternative embodiments, the high-flowability resin grafting modification production apparatus further includes a melt pump disposed between the feed pipe and the inlet of the granulator.

[0018] In some alternative embodiments, the high-flowability resin grafting modification production apparatus further includes a condenser connected to the reactor, the condenser being configured to condense and reflux unreacted graft monomers and grafting aids.

[0019] In some optional embodiments, the high-flowability resin grafting modification production apparatus further includes an exhaust gas collection tank connected to the reaction vessel, the exhaust gas collection tank containing an alkaline solution for absorbing unreacted graft monomers.

[0020] In some optional embodiments, the heating assembly includes a heating chamber, a heating pump, and a jacket. The heating chamber is used to heat and store the heat transfer medium. The jacket is disposed on the outer wall of the reactor. The outlet of the heating chamber is connected to the inlet of the jacket, and the inlet of the heating chamber is connected to the outlet of the jacket to form a heating circulation loop. The heating pump is disposed between the heating chamber and the jacket to drive the heat transfer medium to flow in the heating circulation loop.

[0021] In some alternative embodiments, the cooling assembly includes an inner coil and a cooling source. The inner coil is coiled inside the reactor and connected to the cooling source via a pipeline to form a cooling circulation loop for the flow of cooling medium.

[0022] In some optional embodiments, the temperature control mechanism further includes a temperature detection element and a thermometer. The detection end of the temperature detection element is disposed inside the reactor and is used to detect the temperature of the reaction system inside the reactor. The thermometer is communicatively connected to the temperature detection element and is disposed outside the reactor.

[0023] In some optional embodiments, the auxiliary material mechanism includes an auxiliary material solution tank, an auxiliary material solution pump, a heating jacket, a second drive unit, and a second stirring paddle. The auxiliary material solution tank is used to prepare and store the auxiliary material solution. The heating jacket is provided on the outer wall of the auxiliary material solution tank, and a heat-conducting medium flows inside the heating jacket. The second stirring paddle is disposed inside the auxiliary material solution tank. The output end of the second drive unit is connected to the second stirring paddle for driving the second stirring paddle to rotate.

[0024] In some alternative embodiments, the first impeller includes a disc turbine agitator and a blade impeller coaxially connected from top to bottom.

[0025] The beneficial effects of this invention are:

[0026] This invention provides a high-flowability resin grafting modification production apparatus, including a reaction vessel, a granulator, an auxiliary material mechanism, a stirring mechanism, a protection mechanism, a vacuum mechanism, and a temperature control mechanism. The granulator is used to granulate and form granular polymer resin. The auxiliary material mechanism is connected to the reaction vessel and is used to input an auxiliary material solution into the reaction vessel. The auxiliary material solution includes a mixed initiator, grafting monomer, and grafting aid. The stirring mechanism includes a first drive component and a first stirring paddle. The first stirring paddle is disposed inside the reaction vessel. The output end of the first drive component is drivenly connected to the first stirring paddle to drive the first stirring paddle to rotate, so that the polymer substrate and the auxiliary material solution in the vessel are uniformly mixed, enhancing the mass and heat transfer effect and avoiding grafting rate fluctuations caused by uneven local reactions. The protection mechanism is connected to the reaction vessel and is used to... An inert gas is introduced into the reactor to effectively isolate it from air and oxygen, preventing side reactions such as monomer self-polymerization and polymer degradation caused by oxygen, thus ensuring the directional and efficient progress of the grafting reaction. The vacuum mechanism is connected to the reactor to create negative pressure inside, which can quickly remove unreacted polar monomers and reaction byproducts, reducing the residue of volatile organic compounds and odor in the product, and also disrupt the reaction equilibrium to promote the forward progress of the grafting reaction, thereby improving the effective grafting rate. The temperature control mechanism includes heating and cooling components, which are thermally coupled to the reactor to precisely control the temperature of the reaction system inside the reactor. Through the precise coordination of the heating and cooling components, the temperature inside the reactor is controlled in real time and maintained within the optimal reaction range, avoiding the impact of temperature fluctuations on the reaction rate and product performance.

[0027] The system comprises at least two reactors, each with its outlet connected to the inlet of the granulator. The reaction cycles of each reactor are staggered to alternately supply molten resin to the granulator, ensuring a continuous and stable material flow and enabling continuous production, thus significantly improving production efficiency. Furthermore, it avoids the frequent start-stop problems caused by the granulator waiting for a single batch of material to be discharged from the reactor, thereby preventing fluctuations in process parameters such as temperature and pressure caused by intermittent start-stop operations. This effectively prevents defects such as uneven plasticization and excessively wide particle size distribution in the product, contributing to the consistency of resin product quality.

[0028] In summary, the high-flowability resin grafting modification production apparatus provided in this embodiment can continuously and efficiently produce high-grafting-rate, low-odor high-flowability resin, ensuring consistent product quality and achieving large-scale production. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the high-flowability resin grafting modification production device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the reaction vessel described in an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Reactor; 11. Reactor body; 12. Reactor lid; 121. Feed port; 122. Transparent viewing window;

[0033] 2. Granulator;

[0034] 3. Auxiliary material mechanism; 31. Auxiliary material solution tank; 32. Auxiliary material solution pump; 33. Heating jacket; 34. Second drive component; 35. Second stirring paddle; 4. Stirring mechanism; 41. First drive component; 42. First stirring paddle; 421. Disc turbine stirrer; 422. Blade paddle stirrer;

[0035] 5. Protective mechanism; 6. Vacuum mechanism;

[0036] 7. Heating assembly; 71. Heating chamber; 72. Heat pump; 73. Jacket;

[0037] 8. Inner coil; 9. Feed pipe; 10. Melt pump; 13. Condenser; 14. Waste gas collection tank; 15. Thermometer; 16. Pressure gauge; 18. Product collection tank. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection via an intermediate medium; or the internal communication of two components or the interaction between two components. As examples, a direct connection refers to two parts or components being connected together without the need for an intermediate medium, while an indirect connection refers to two parts or components each being connected to at least one intermediate medium, with the connection achieved through the intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0042] like Figure 1 and Figure 2As shown, this embodiment provides a high-flowability resin grafting modification production device, including a reaction vessel 1, a granulator 2, an auxiliary material mechanism 3, a stirring mechanism 4, a protection mechanism 5, a vacuum mechanism 6, and a temperature control mechanism. The granulator 2 is used to granulate and form granular polymer resin. The auxiliary material mechanism 3 is connected to the reaction vessel 1 and is used to input an auxiliary material solution into the reaction vessel 1. The auxiliary material solution includes a mixed initiator, grafting monomer, and grafting aid. The stirring mechanism 4 includes a first drive member 41 and a first stirring paddle 42. The first stirring paddle 42 is disposed in the reaction vessel 1. The output end of the first drive member 41 is connected to the first stirring paddle 42 to drive the first stirring paddle 42 to rotate, so that the polymer substrate and the auxiliary material solution in the vessel are uniformly mixed, enhancing the mass and heat transfer effect and avoiding grafting rate fluctuations caused by uneven local reactions. The protection mechanism 5... Connected to reactor 1, it is used to introduce inert gas into reactor 1, effectively isolating air and oxygen, preventing side reactions such as monomer self-polymerization and polymer degradation caused by oxygen, and ensuring the directional and efficient progress of the grafting reaction; Vacuum mechanism 6 is connected to reactor 1, used to create negative pressure inside reactor 1, which can quickly remove unreacted polar monomers and reaction by-products, reduce VOC (volatile organic compound) residues and odors in the product, and also break the reaction equilibrium to promote the forward progress of the grafting reaction, thereby improving the effective grafting rate; The temperature control mechanism includes heating component 7 and cooling component, which are thermally coupled to reactor 1 to precisely control the temperature of the reaction system inside the reactor. Through the precise cooperation of heating component 7 and cooling component, the temperature inside the reactor is controlled in real time and maintained within the optimal reaction range, avoiding the impact of temperature fluctuations on the reaction rate and product performance.

[0043] The reactor 1 consists of at least two reactors, with the outlet of each reactor 1 connected to the inlet of the granulator 2. The reaction cycles of each reactor 1 are staggered to alternately supply molten resin to the granulator 2, ensuring a continuous and stable material flow for the granulator 2. This enables continuous production and significantly improves production efficiency. Furthermore, it avoids the frequent start-stop problems caused by the granulator 2 waiting for a single batch of material from a reactor 1, thereby preventing fluctuations in process parameters such as temperature and pressure caused by intermittent start-stop. This effectively prevents defects such as uneven plasticization and excessively wide particle size distribution in the product, and helps ensure the consistency of resin product quality.

[0044] In summary, the high-flowability resin grafting modification production apparatus provided in this embodiment can continuously and efficiently produce high-grafting-rate, low-odor high-flowability resin, ensuring consistent product quality and achieving large-scale production.

[0045] Inert gases are chemically stable and do not react with grafted monomers, polymers or initiators. Inert gases include, but are not limited to, nitrogen, argon or helium.

[0046] Specifically, the reactor 1 includes a reactor body 11 and a reactor lid 12 with a sealing cover located at the top opening of the reactor body 11. The reactor lid 12 has interfaces for communication with the auxiliary material mechanism 3, the protective mechanism 5, and the vacuum mechanism 6. A first driving component 41 is disposed on the reactor lid 12, and its output end passes through the reactor lid 12 and is connected to the first stirring paddle 42 for transmission. The reactor lid 12 also has a feeding port 121 for feeding polymer resin. The reactor lid 12 also has a transparent viewing window 122 to facilitate observation of the reaction inside the reactor.

[0047] In some optional embodiments, the high-flowability resin grafting modification production apparatus further includes a feed pipe 9. The feed pipe 9 has a jacketed wall with a heat-conducting medium flowing within it. The feed pipe 9 connects the outlet of the reactor 1 and the inlet of the granulator 2. The design of the feed pipe 9, with its jacketed wall and heat-conducting medium, ensures a stable temperature for the material throughout its journey from the outlet of the reactor 1 to the inlet of the granulator 2. This effectively prevents the high-flowability resin melt from cooling and solidifying or experiencing abnormal viscosity increases due to temperature drops during transport, ensuring the material maintains a uniform melt state. This design not only ensures smooth material transport and prevents production interruptions caused by blockage of the feed pipe 9, but also maintains the high flowability and uniformity of the material, allowing it to quickly adapt to the granulation process requirements after entering the granulator 2. This reduces the impact of material state fluctuations on the granulation effect, thereby improving the final particle size consistency, surface smoothness, and other quality indicators of the granulated product. Meanwhile, a stable melt state can prevent uneven performance caused by local cooling of materials during transportation, ensuring the stability of the grafted modified material properties and effectively connecting with the modification effect of reactor 1, further improving the stability of the overall production process and the reliability of product quality.

[0048] In some optional embodiments, the high-flowability resin graft modification production apparatus further includes a melt pump 10, which is located between the feed pipe 9 and the inlet of the granulator 2. The melt pump 10 can accurately meter and stably convey the grafted high-flowability resin melt, effectively solving the problem of difficult-to-control flow rate due to the low viscosity and high flowability of high-flowability materials. Through the precise flow rate regulation function of the melt pump 10, the amount of material entering the granulator 2 is ensured to remain constant, avoiding uneven feeding of the granulator 2 caused by fluctuations in material supply. This prevents quality problems such as excessive particle size deviation and irregular particle shape, further improving the consistency of the final product quality. Simultaneously, the stable material conveying rhythm allows the granulator 2 to always operate in optimal condition, reducing equipment load changes caused by feed fluctuations, lowering the risk of production interruption, and ensuring the continuous stability of the overall production process. In addition, the pressurizing and conveying function of the melt pump 10 can further optimize the melt uniformity of the material, so that the material maintains a more stable physical state before entering the granulator 2. This, combined with the heat preservation design of the feed pipe 9, creates a synergistic effect, which not only improves production efficiency but also provides a reliable guarantee for the smooth progress of the subsequent granulation process, thus helping to achieve large-scale and efficient production of high grafting rate and high-quality modified resin.

[0049] In this embodiment, the granulator 2 is a steel belt granulator 2, which is suitable for high-flowability, heat-sensitive grafted modified resins. Its shaped granules have uniform particle size, smooth surface and no adhesion, which can meet the processing requirements of high-end materials; it can realize continuous large-scale production with stable and efficient production capacity.

[0050] In other embodiments, the granulator 2 may also be a drum-type or disc-type granulator, which is not limited here.

[0051] In some optional embodiments, the output end of the granulator 2 is also provided with a product collection trough 18 for collecting and storing products.

[0052] In some optional embodiments, the high-flowability resin grafting modification production apparatus further includes a condenser 13, which is connected to the reactor 1. The condenser 13 is configured to condense and reflux unreacted grafting monomers and grafting auxiliaries. The condenser 13 can efficiently capture and recover unreacted grafting monomers and grafting auxiliaries in the reaction system, converting them into liquid form before refluxing them back into the reactor 1 to participate in the reaction again, significantly reducing raw material loss and production costs. Simultaneously, this design reduces the volatilization loss of unreacted monomers and auxiliaries, lowering VOC emissions and environmental governance pressure, meeting environmentally friendly production requirements. The refluxed monomers and auxiliaries also maintain the stability of the material concentration in the reaction system, preventing a decrease in grafting rate or fluctuations in product performance due to a reduction in effective components, ensuring continuous and efficient reaction, and contributing to obtaining modified resin products with high grafting rates and uniform performance.

[0053] For example, the condensing medium of condenser 13 may be circulating water.

[0054] In some optional embodiments, the high-flowability resin grafting modification production apparatus further includes an exhaust gas collection tank 14, which is connected to the reaction vessel 1. The exhaust gas collection tank 14 contains an alkaline solution for absorbing unreacted grafted monomers. The alkaline solution in the exhaust gas collection tank 14 efficiently captures unreacted grafted monomers (such as acidic monomers like maleic anhydride) through an acid-base neutralization reaction, avoiding air pollution caused by the direct emission of volatile monomers, meeting environmental compliance requirements, and reducing exhaust gas treatment costs. The captured monomers form stable compounds through a neutralization reaction, which can be recycled and reused through subsequent processing, reducing raw material loss and improving production economics.

[0055] Furthermore, the waste gas collection tank 14 is connected to the reaction vessel 1 via the condenser 13, which can efficiently capture residual grafted monomers that have not been returned after condensation by the condenser 13, further improving the recovery and purification efficiency of unreacted monomers. This design not only avoids environmental pollution caused by the direct emission of residual volatile monomers and meets stringent environmental compliance requirements, but also minimizes raw material loss and enables the recycling and reuse of residual monomers through subsequent treatment, thereby improving production economics.

[0056] In some optional embodiments, the high-flowability resin grafting modification production apparatus also includes a tail gas treatment system connected to the waste gas collection tank 14. The tail gas treatment system is used to treat gases that cannot be absorbed by the alkaline solution, completely blocking the emission path of pollutants, further improving the environmental compliance of the apparatus, meeting stringent waste gas emission standards, and preventing unabsorbed gases from affecting the environment or causing safety hazards. At the same time, it can prevent the accumulation of trace amounts of harmful gases in the system, maintain the stability of equipment operation, and provide comprehensive support for the continuous and green production of high-flowability resin grafting modification.

[0057] In some optional embodiments, the heating assembly 7 includes a heating chamber 71, a heating pump 72, and a jacket 73. The heating chamber 71 is used to heat and store the heat transfer medium. The jacket 73 is disposed on the outer wall of the reactor 1. The outlet of the heating chamber 71 is connected to the inlet of the jacket 73, and the inlet of the heating chamber 71 is connected to the outlet of the jacket 73 to form a heating circulation loop. The heating pump 72 is disposed between the heating chamber 71 and the jacket 73 to drive the heat transfer medium to flow in the heating circulation loop. The heating assembly 7, through the closed-loop heating circulation loop formed by the heating chamber 71, the heating pump 72, and the jacket 73 on the outer wall of the reactor 1, achieves stable circulation and efficient heat transfer of the heat transfer medium, providing a uniform and controllable temperature environment for the high-flowability resin grafting reaction. The heating chamber 71 can precisely control and store the temperature of the heat transfer medium, while the heating pump 72 provides continuous power for the flow of the medium, ensuring smooth circulation of the heat transfer medium between the jacket 73 and the heating chamber 71. This allows heat to be evenly transferred to the inner wall of the reactor 1, achieving rapid heating and constant temperature maintenance within the reactor system, and avoiding uneven reactions or side reactions caused by localized temperature deviations. By adjusting the power of the heating pump 72 and the temperature of the heating chamber 71 to meet the temperature requirements of different reaction stages, and working in conjunction with the cooling components, precise temperature control is achieved, ensuring efficient and directional grafting reactions, and improving the grafting rate and performance consistency of the product.

[0058] The heat transfer medium includes, but is not limited to, heat transfer oil, and is not specified here.

[0059] In some optional embodiments, the cooling assembly includes an inner coil 8 and a cooling source. The inner coil 8 is coiled inside the reactor 1 and connected to the cooling source via pipelines to form a cooling circulation loop for the cooling medium. The cooling assembly, through the inner coil 8 coiled inside the reactor 1 and the cooling source, forms a cooling circulation loop, achieving direct and efficient heat exchange between the cooling medium and the reaction system, providing precise temperature control for the grafting reaction of high-flowability resins. The coiled structure of the inner coil 8 significantly increases the contact area with the melt inside the reactor. Combined with the circulating flow of the cooling medium, it can quickly remove reaction heat, effectively suppressing side reactions caused by excessively high reaction temperatures, and preventing polymer degradation or a decrease in grafting rate.

[0060] The cooling source includes, but is not limited to, industrial chillers or chilled brine units, and is not limited to these.

[0061] In some optional embodiments, the temperature control mechanism further includes a temperature sensor and a thermometer 15. The sensing end of the temperature sensor is located inside the reactor 1 to detect the temperature of the reaction system inside the reactor 1. The thermometer 15 is communicatively connected to the temperature sensor and is located outside the reactor 1 to display the temperature. Through the cooperation of the temperature sensor inside the reactor 1 and the thermometer 15 outside the reactor 1, real-time detection and intuitive display of the reaction system temperature are achieved, providing accurate data support for temperature control of the grafting reaction. The temperature sensor directly contacts the reaction system inside the reactor, enabling rapid capture of temperature changes and ensuring the authenticity and timeliness of the detection data, avoiding temperature control deviations caused by delayed temperature feedback. The thermometer 15 outside the reactor allows operators to intuitively grasp the temperature status inside the reactor, facilitating timely adjustment of the operating parameters of the heating component 7 and the cooling component, achieving dynamic and precise temperature control, effectively avoiding side reactions or uneven product performance caused by temperature fluctuations, ensuring the high-flowability resin grafting reaction proceeds stably within the optimal temperature range, further improving process controllability and product quality consistency, and providing strong support for the stability of large-scale production.

[0062] In some optional embodiments, the temperature control mechanism further includes a pressure detection element and a pressure gauge 16. The detection end of the pressure detection element is disposed inside the reactor 1 to detect the pressure of the reaction system inside the reactor 1. The pressure gauge 16 is communicatively connected to the pressure detection element and is disposed outside the reactor 1 to display the pressure.

[0063] Furthermore, the temperature sensor is communicatively connected to the heating chamber 71 and the cooling source. The temperature sensor captures the temperature data of the reaction system inside the reactor in real time and synchronously feeds it back to the control units of the heating chamber 71 and the cooling source. When the detected temperature is below the optimal reaction range, the heating chamber 71 automatically starts the heating program or increases the heating power, quickly replenishing heat through the circulating heat transfer medium. When the temperature exceeds the set threshold, the cooling source immediately starts the cooling cycle or increases the flow rate of the cooling medium, efficiently removing excess heat through the internal coil 8. This linkage control mode achieves dynamic temperature balance adjustment without manual intervention, effectively avoiding the lag and errors caused by manual control, ensuring that the temperature inside the reactor remains stable within the preset range. This fundamentally suppresses side reactions such as monomer self-polymerization and polymer degradation caused by temperature fluctuations, ensuring the directional and efficient grafting reaction of the high-flowability resin. Simultaneously, the automated closed-loop control reduces the intensity of manual operation, improves the safety and stability of the production process, and, combined with the intuitive display of the temperature gauge 15, facilitates real-time monitoring of the temperature control status and necessary fine-tuning by operators, further enhancing process controllability and product quality consistency, providing reliable automated technical support for large-scale continuous production.

[0064] In some optional embodiments, the excipient mechanism 3 includes an excipient solution tank 31, an excipient solution pump 32, a heating jacket 33, a second drive component 34, and a second stirring paddle 35. The excipient solution tank 31 is used to prepare and store the excipient solution. The outer wall of the excipient solution tank 31 is provided with a heating jacket 33, and a heat-conducting medium flows inside the heating jacket 33. The second stirring paddle 35 is disposed inside the excipient solution tank 31. The output end of the second drive component 34 is connected to the second stirring paddle 35 for driving the second stirring paddle 35 to rotate. The excipient solution tank 31 serves as the core storage and preparation carrier. The heating jacket 33 on its outer wall is circulated and heated by the heat-conducting medium, which can accurately maintain the set temperature of the excipient solution and avoid excipient crystallization, stratification, or abnormal viscosity due to temperature changes, thus ensuring the stability and activity of the excipient solution. The second drive component 34 drives the second stirring paddle 35 to rotate continuously inside the tank, which can achieve rapid and uniform mixing of the excipient and solvent, improve the dissolution rate of the excipient and the uniformity of the solution, and avoid local uneven concentration affecting the grafting reaction effect. The auxiliary material solution pump 32 provides stable power for the delivery of the auxiliary material solution, ensuring that the amount of auxiliary material added to the reactor 1 is precise and controllable. In conjunction with the synergistic effect of the heating jacket 33 and the stirring structure, the auxiliary material solution is kept in optimal condition throughout the entire process of preparation, storage and delivery, forming an efficient match with the main reaction system in the reactor 1. This ensures the directional progress of the grafting reaction and the consistency of product performance, while improving the utilization rate of auxiliary materials and reducing waste, providing strong support for the stability and economy of large-scale production.

[0065] In some optional embodiments, the first stirring paddle 42 includes a disc turbine agitator 421 and a blade agitator 422 coaxially connected from top to bottom. The upper disc turbine agitator 421 generates strong radial shear force and axial suction when rotating, which can quickly break up agglomerates of excipients and evenly disperse them into the melt, while simultaneously promoting vigorous agitation of the upper melt in the reactor. The lower blade agitator 422 primarily pushes axially, causing the lower melt in the reactor to circulate vertically, preventing material stagnation or uneven concentration at the bottom. The coaxial linkage of the two agitators creates a synergistic stirring effect, which not only enhances the local shear dispersion effect but also ensures the overall fluidity of the melt. This effectively solves problems such as stratification or local concentration deviations that easily occur during the mixing of high-flowability materials, ensuring uniform contact between the excipients and the resin melt, effectively improving mixing efficiency and quality, creating a uniform reaction environment for the grafting reaction, significantly reducing the incidence of side reactions, and thus improving the grafting rate and performance uniformity of the product. It also adapts to the stirring requirements of high-viscosity melts, ensuring stable mixing of materials in large-scale production.

[0066] In this embodiment, the blade agitator 422 is a three-blade agitator, with the three blades evenly spaced around the agitator shaft. This creates a strong and uniform axial flow field during rotation, driving the melt in the lower part of the vessel to circulate rapidly upwards, effectively preventing material stagnation or concentration stratification at the bottom and ensuring material flow throughout the entire vessel. Of course, in other embodiments, the blade agitator 422 can also be a four-blade agitator; this is not a limitation.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high flow resin graft modification production apparatus characterized by, The application relates to a high-fluidity resin grafting modification production device. The device comprises a reaction kettle (1) and a granulator (2); An auxiliary material mechanism (3) is in communication with the reaction kettle (1) and is used for inputting an auxiliary material solution into the reaction kettle (1); A stirring mechanism (4) comprises a first driving member (41) and a first stirring paddle (42), the first stirring paddle (42) is arranged in the reaction kettle (1), and the output end of the first driving member (41) is in transmission connection with the first stirring paddle (42) to drive the first stirring paddle (42) to rotate; A protection mechanism (5) is in communication with the reaction kettle (1) and is used for inputting an inert gas into the reaction kettle (1); A vacuum mechanism (6) is in communication with the reaction kettle (1) and is used for forming negative pressure in the reaction kettle (1); A temperature control mechanism comprises a heating assembly (7) and a cooling assembly, and the two are respectively in thermal coupling with the reaction kettle (1); The number of the reaction kettles (1) is at least two, the discharge outlets of the reaction kettles (1) are in communication with the inlet of the granulator (2), and the reaction periods of the reaction kettles (1) are arranged in turn and staggeredly to alternately supply molten resin to the granulator (2).

2. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The high-fluidity resin grafting modification production device further comprises a discharging pipe (9), the pipe wall of the discharging pipe (9) has a sandwich layer, a heat-conducting medium flows in the sandwich layer, and the discharging pipe (9) is in communication between the discharge outlet of the reaction kettle (1) and the inlet of the granulator (2).

3. The apparatus for producing a high flow resin graft modified according to claim 2, wherein The high-fluidity resin grafting modification production device further comprises a melt pump (10), and the melt pump (10) is arranged between the discharging pipe (9) and the inlet of the granulator (2).

4. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The high-fluidity resin grafting modification production device further comprises a condenser (13), the condenser (13) is in communication with the reaction kettle (1), and the condenser (13) is configured to condense and reflux unreacted grafting monomers and grafting aids.

5. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The high-fluidity resin grafting modification production device further comprises a waste gas collecting tank (14), the waste gas collecting tank (14) is in communication with the reaction kettle (1), and the waste gas collecting tank (14) contains an alkaline solution and is used for absorbing unreacted grafting monomers.

6. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The heating assembly (7) comprises a heating box (71), a heating pump (72) and a jacket (73), the heating box (71) is used for heating and storing a heat-conducting medium, the jacket (73) is arranged on the outer wall of the reaction kettle (1), the outlet of the heating box (71) is in communication with the inlet of the jacket (73), the inlet of the heating box (71) is in communication with the outlet of the jacket (73) to form a heating circulation loop, and the heating pump (72) is arranged between the heating box (71) and the jacket (73) and is used for driving the heat-conducting medium to flow in the heating circulation loop.

7. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The cooling assembly comprises an inner coil pipe (8) and a cooling source, the inner coil pipe (8) is arranged in the reaction kettle (1) and is in communication with the cooling source through a pipeline to form a cooling circulation loop for flowing of a cooling medium.

8. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The temperature control mechanism further comprises a temperature detecting member and a temperature meter (15), the detecting end of the temperature detecting member is arranged in the reaction kettle (1) and is used for detecting the temperature of the reaction system inside the reaction kettle (1); the temperature meter (15) is in communication connection with the temperature detecting member, and the temperature meter (15) is arranged outside the reaction kettle (1).

9. The apparatus for producing a high flow resin graft modified according to claim 1, wherein The auxiliary material mechanism (3) comprises an auxiliary material solution tank (31), an auxiliary material solution pump (32), a heating jacket (33), a second driving member (34) and a second stirring paddle (35), the auxiliary material solution tank (31) is used for preparing and storing the auxiliary material solution, the outer wall of the auxiliary material solution tank (31) is provided with the heating jacket (33), a heat conducting medium flows through the heating jacket (33), the second stirring paddle (35) is arranged in the auxiliary material solution tank (31), and the output end of the second driving member (34) is in transmission connection with the second stirring paddle (35) and is used for driving the second stirring paddle (35) to rotate.

10. The apparatus for producing a high flow resin graft modified according to any one of claims 1 to 9, characterized by, The first stirring paddle (42) comprises a disc turbine stirrer (421) and a vane paddle stirrer (422) which are coaxially connected in sequence from top to bottom.

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