A homogeneous cavity applied to nanodispersion of olefin carbon materials

Abstract

The application relates to the technical field of mixing devices, and discloses a homogenizing cavity applied to nanodispersion of olefin-carbon materials, which comprises a front-end fluid channel, a first collision cavity, a rear-end fluid channel and a second collision cavity connected in series; the front-end fluid channel comprises a first front-end fluid sub-channel and a second front-end fluid sub-channel used for guiding fluid to the first collision cavity for collision, and an included angle alpha 1 is formed between the first front-end fluid sub-channel and the second front-end fluid sub-channel; the inner diameter of the front-end fluid channel is larger than that of the rear-end fluid channel; the rear-end fluid channel comprises a first rear-end fluid sub-channel and a second rear-end fluid sub-channel, the inlets of which are communicated with the first collision cavity, and an included angle beta 1 is formed between the first rear-end fluid sub-channel and the second rear-end fluid sub-channel; the collided fluid is guided into the second collision cavity from the first and second rear-end fluid sub-channels respectively to occur second collision, so that the deagglomeration efficiency of the olefin-carbon materials is improved, the circulation processing times are reduced, and the risk of blockage is reduced.

Description

Technical Field

[0001] This invention relates to the field of mixing equipment technology, and more particularly to a homogeneous cavity for the nano-dispersion of olefinic materials. Background Technology

[0002] A microfluidic homogenizer is an industrial device that achieves homogenization, dispersion, and emulsification by pressurizing and impacting fluids at high speed. It is widely used in biotechnology, pharmaceutical preparation, food processing, petrochemicals, and emerging materials fields such as graphene. The homogenizing valve is the core component that realizes the fluid collision effect.

[0003] Taking the widely used Y-type homogenizing valve as an example, its body contains a Y-shaped interactive cavity. Fluid enters from the inlet and splits into two branches, converging and colliding at the ends, finally exiting through the outlet via a third branch. The advantage of this structure is that the two branches share the same feed source, resulting in equal internal pressure, which is beneficial for achieving a stable collision process. However, this structure can only achieve a single impact, and the fluid's interaction time within the interactive cavity is short, leading to limited homogenization effect. Multiple cycles are often required, resulting in low overall efficiency.

[0004] Graphene and carbon nanotubes, as representative of these materials, have shown broad application prospects in fields such as new energy batteries, conductive pastes, functional coatings, and composite materials due to their excellent electrical, mechanical, and thermal properties. However, these materials are prone to agglomeration during preparation, and achieving efficient and uniform nanoscale dispersion has become one of the key technical challenges restricting their industrial application.

[0005] Currently, microfluidic homogenizers are widely used in industry for high-pressure dispersion of olefin-carbon materials. The core component is the homogenizing chamber, and its internal flow channel structure directly affects the dispersion effect and the stability of the equipment operation. Common homogenizing chambers mainly include two structures: Y-type and Z-type. As mentioned earlier, the Y-type chamber achieves dispersion through flow splitting and collision; the Z-type chamber has a Z-shaped flow channel, where the fluid is discharged after impacting the chamber wall under high pressure.

[0006] However, in practical applications, the aforementioned traditional cavity structure has revealed the following major technical defects: First, the dispersion effect is limited. Sufficient shear force and multiple collisions are required for the exfoliation of graphene sheets and the deagglomeration of carbon nanotube bundles. Traditional Y-shaped or Z-shaped cavities can only achieve a single impact, resulting in a short shear path and insufficient action time, making it difficult to achieve the desired dispersion effect. Multiple cycles are usually required, leading to high energy consumption and low efficiency.

[0007] Secondly, blockages are prone to occur. In particular, carbon nanotubes and other carbon materials with high aspect ratios are prone to accumulating and tangling at corners or confluences when flowing through the narrow channels of traditional cavities, leading to channel blockages and causing equipment shutdowns for cleaning, which seriously affects the continuity and stability of production.

[0008] Therefore, how to design a homogeneous cavity that can effectively improve the dispersion effect while avoiding clogging has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0009] This invention provides a homogenizing cavity for nano-dispersion of olefinic carbon materials, aiming to solve at least one of the problems existing in the homogenizing cavities of microfluidic homogenizers in the prior art.

[0010] The first aspect of the present invention provides a homogeneous cavity for nano-dispersion of olefinic carbon materials, comprising a body, wherein the body has a fluid channel unit internally constructed, and the fluid channel unit comprises a front fluid channel, a first collision chamber, a rear fluid channel and a second collision chamber connected in series. The front-end fluid channel includes a first front-end fluid sub-channel and a second front-end fluid sub-channel for guiding fluid to the first collision cavity, with the first front-end fluid sub-channel and the second front-end fluid sub-channel forming an angle α1; The rear fluid channel includes a first rear fluid sub-channel and a second rear fluid sub-channel; the inner diameter of the first front fluid sub-channel is larger than the inner diameters of the first rear fluid sub-channel and the second rear fluid sub-channel, and the inner diameter of the second front fluid sub-channel is larger than the inner diameters of the first rear fluid sub-channel and the second rear fluid sub-channel. The inlets of the first and second rear fluid distribution channels are both connected to the first collision chamber, and an angle β1 is formed between the first and second rear fluid distribution channels; the first and second rear fluid distribution channels are both used to guide the fluid from the first collision chamber to the second collision chamber. The two fluids flow into the first collision chamber through the first front fluid distribution channel and the second front fluid distribution channel, respectively, and collide for the first time. After the collision, the fluids are introduced into the second collision chamber through the first rear fluid distribution channel and the second rear fluid distribution channel, respectively, and collide for the second time.

[0011] According to the present invention, a homogeneous cavity for nano-dispersion of olefinic carbon materials is provided, wherein the first front-end fluid distribution channel and the first rear-end fluid distribution channel form an included angle γ1, and the first front-end fluid distribution channel, the second front-end fluid distribution channel, the first rear-end fluid distribution channel and the second rear-end fluid distribution channel are symmetrically arranged with the angle bisector of the included angle γ1 as the axis of symmetry.

[0012] According to the homogeneous cavity for nano-dispersion of olefinic materials provided by the present invention, the rear fluid channel further includes: The third rear fluid distribution channel connects the outlet of the first rear fluid distribution channel to the second collision chamber. An angle β2 is formed between the first rear fluid distribution channel and the third rear fluid distribution channel. The inner diameter of the third rear fluid distribution channel is not greater than the inner diameter of the first rear fluid distribution channel. The fourth rear fluid distribution channel is connected to the second collision chamber through the outlet of the second rear fluid distribution channel. An angle β3 is formed between the second rear fluid distribution channel and the fourth rear fluid distribution channel. An angle β4 is formed between the third rear fluid distribution channel and the fourth rear fluid distribution channel. The inner diameter of the fourth rear fluid distribution channel is not greater than the inner diameter of the second rear fluid distribution channel.

[0013] According to the homogeneous cavity for nano-dispersion of olefinic materials provided by the present invention, the front-end fluid channel further includes: The third front-end fluid distribution channel is formed at the inlet of the first front-end fluid distribution channel and forms an angle α2 with the first front-end fluid distribution channel. The inner diameter of the third front-end fluid distribution channel is not less than the inner diameter of the first front-end fluid distribution channel. A fourth front-end fluid distribution channel is formed at the inlet of the second front-end fluid distribution channel and forms an angle α3 with the second front-end fluid distribution channel; the fourth front-end fluid distribution channel forms an angle α4 with the third front-end fluid distribution channel, and the inner diameter of the fourth front-end fluid distribution channel is not less than the inner diameter of the second front-end fluid distribution channel.

[0014] According to the homogeneous cavity for nano-dispersion of olefinic materials provided by the present invention, a feeding channel is further constructed within the body, and the inlet of the third front-end fluid distribution channel and the inlet of the fourth front-end fluid distribution channel are both connected to the feeding channel.

[0015] According to the homogeneous cavity for nano-dispersion of olefinic materials provided by the present invention, the inner diameter of the first front-end fluid distribution channel is equal to the inner diameter of the second front-end fluid distribution channel, and both are the first inner diameter D1; the inner diameter of the first rear-end fluid distribution channel is equal to the inner diameter of the second rear-end fluid distribution channel, and both are the second inner diameter D2; wherein, the size of the first inner diameter D1 is 100~200 micrometers, and the size of the second inner diameter D2 is not greater than 50 micrometers.

[0016] According to the homogeneous cavity for nano-dispersion of olefinic carbon materials provided by the present invention, the material of the front-end fluid channel includes diamond or zirconium oxide, and / or the material of the rear-end fluid channel includes diamond or zirconium oxide.

[0017] According to the homogeneous cavity for nano-dispersion of olefinic carbon materials provided by the present invention, a cooling channel is further provided in the body, and the cooling medium in the cooling channel is used to cool the body.

[0018] A second aspect of the present invention provides a microfluidic homogenizer, comprising a homogenizing cavity for nano-dispersion of olefinic carbon materials as described in any of the preceding claims, and a cooling system; the cooling system is connected to the homogenizing cavity and is used to reduce the temperature of the homogenizing cavity.

[0019] A third aspect of this invention provides a method for nano-dispersion of olefinic carbon materials, employing the aforementioned microfluidic homogenizer, comprising: The olefin material, dispersant, and solvent are mixed to obtain a premixed slurry; The cooling system is controlled to keep the temperature of the homogeneous cavity used for nano-dispersion of olefinic carbon materials below 40°C as described above. The premixed slurry is injected into the homogenizing chamber, where it undergoes two collisions in the first and second collision chambers before being discharged from the homogenizing chamber. The discharged premixed slurry is then fed back into the inlet of the homogenizing chamber as slurry to be processed, and this process is repeated 3 to 8 times. Finally, the slurry that has undergone the recycling process is collected and filtered to obtain the finished slurry.

[0020] This invention provides a homogeneous cavity for the nano-dispersion of graphene-carbon materials. Through a series of dual-collision chambers, the fluid undergoes two high-intensity impacts and shearing cycles during a single flow through the cavity. This extends the interaction time and shearing path, improving the efficiency of graphene exfoliation and carbon nanotube deagglomeration. Ultimately, this reduces the number of processing cycles, lowers energy consumption, and shortens the production cycle. Simultaneously, the stepped channel inner diameter design (wider at the front and narrower at the back) establishes a fluid processing mode of pre-dispersion followed by fine dispersion, avoiding the accumulation and blockage of high aspect ratio graphene-carbon materials at the narrow channel inlet. This improves the operational stability and production continuity of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1This is one of the schematic diagrams of a homogeneous cavity structure for nano-dispersion of olefinic carbon materials provided by the present invention.

[0023] Figure 2 This is the second schematic diagram of a homogeneous cavity structure for nano-dispersion of olefinic carbon materials provided by the present invention.

[0024] Figure 3 These are microscopic images of the finished slurries of Example 2 and Comparative Example 1 under a scanning electron microscope; wherein, (a) is the microscopic morphology of the premixed slurry magnified 500 times; (b) is the microscopic morphology of the premixed slurry magnified 2000 times; (c) is the microscopic morphology of the finished slurry of Comparative Example 1 magnified 500 times; (d) is the microscopic morphology of the finished slurry of Comparative Example 1 magnified 2000 times; (e) is the microscopic morphology of the finished slurry of Example 2 magnified 500 times; and (f) is the microscopic morphology of the finished slurry of Example 2 magnified 2000 times.

[0025] Figure 4 The graph shows the particle size detection results in the finished slurry of Example 2 and Comparative Example 1.

[0026] Figure 5 These are the material states and scanning electron microscope images of the finished slurries of Example 3 and Comparative Example 3; wherein, (a) is a photograph of the finished slurry of Example 3; (b) is the microstructure of the finished slurry of Example 3 under a scanning electron microscope; (c) is a photograph of the finished slurry of Comparative Example 3; and (d) is the microstructure of the finished slurry of Comparative Example 3 under a scanning electron microscope.

[0027] Figure label: 100. Front-end fluid channel; 110. First front-end fluid sub-channel; 120. Second front-end fluid sub-channel; 130. Third front-end fluid sub-channel; 140. Fourth front-end fluid sub-channel; 200. First collision chamber; 300. Rear fluid channel; 310. First rear fluid sub-channel; 320. Second rear fluid sub-channel; 330. Third rear fluid sub-channel; 340. Fourth rear fluid sub-channel; 400. Second collision chamber. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments in this specification. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this invention, as well as the features of different embodiments or examples.

[0030] In embodiments of the present invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0031] like Figure 1 and Figure 2 As shown, a specific embodiment of the first aspect of the present invention provides a homogeneous cavity for the nano-dispersion of graphene-carbon materials. The homogeneous cavity includes a body; the body internally comprises fluid channel units, each fluid channel unit including a front fluid channel 100, a first collision chamber 200, a rear fluid channel 300, and a second collision chamber 400 connected in series. In other words, fluid flows sequentially through the front fluid channel 100, the first collision chamber 200, the rear fluid channel 300, and the second collision chamber 400, and finally exits the homogeneous cavity. Through this series-connected double-collision-cavity structure, the fluid containing graphene-carbon materials can undergo two high-intensity impacts, shearing, and cavitation effects in a single pass through the homogeneous cavity. Compared to traditional Y-type or Z-type cavities with only a single collision, this embodiment extends the material's contact time and shear path, thereby enabling more thorough exfoliation of graphene sheets and deagglomeration of carbon nanotube bundles, improving dispersion efficiency, and achieving the effects of reducing the number of processing cycles, lowering energy consumption, and shortening the production cycle.

[0032] The front-end fluid channel 100 includes a first front-end fluid branch channel 110 and a second front-end fluid branch channel 120 for guiding fluid to the first collision chamber 200. An angle α1 is formed between the first front-end fluid branch channel 110 and the second front-end fluid branch channel 120. In other words, the outlets of both the first front-end fluid branch channel 110 and the second front-end fluid branch channel 120 are connected to the first collision chamber 200. Two streams of fluid containing olefinic carbon materials flow into the first collision chamber 200 through the first front-end fluid branch channel 110 and the second front-end fluid branch channel 120 respectively, resulting in the first collision.

[0033] The rear fluid channel 300 includes a first rear fluid sub-channel 310 and a second rear fluid sub-channel 320. The inlets of both the first and second rear fluid sub-channels 310 and 320 are connected to the first collision chamber 200, forming an angle β1 between them. Both the first and second rear fluid sub-channels 310 and 320 are used to guide fluid from the first collision chamber 200 to the second collision chamber 400. In other words, the fluid containing olefinic carbon material after collision in the first collision chamber 200 is introduced into the second collision chamber 400 through the first and second rear fluid sub-channels 310 and 320 respectively, where a second collision occurs.

[0034] The inner diameter of the first front-end fluid distribution channel 110 is larger than that of the first rear-end fluid distribution channel 310 and the second rear-end fluid distribution channel 320, and the inner diameter of the second front-end fluid distribution channel 120 is larger than that of the first rear-end fluid distribution channel 310 and the second rear-end fluid distribution channel 320. This stepped inner diameter design, wider at the front and narrower at the rear, creates a fluid processing mode that first stabilizes the feed and then finely disperses it. The fluid initially flows at a lower velocity in the wider front-end channel, which acts as a buffer, preventing the accumulation and blockage of high aspect ratio carbon materials (such as carbon nanotubes) at the narrow inlet. Subsequently, the fluid is accelerated when entering the narrower rear-end channel, resulting in a stronger impact and shearing effect in the second collision, reducing the possibility of cavity blockage, thereby improving the operational stability and production continuity of the equipment and avoiding frequent shutdowns for cleaning due to blockage.

[0035] In this embodiment, the tandem double-collision chamber structure allows the fluid to undergo two high-intensity impacts and shearings in a single flow through the chamber, thereby extending the action time and shearing path, improving the efficiency of graphene exfoliation and carbon nanotube deagglomeration, and ultimately achieving the goal of reducing the number of processing cycles, lowering energy consumption, and shortening the production cycle. Simultaneously, the stepped channel inner diameter design, wider at the front and narrower at the back, constructs a fluid processing mode of first stabilizing the feed and then finely dispersing it, avoiding the problem of high aspect ratio graphene-carbon materials accumulating and clogging at the narrow channel inlet, thus improving the operational stability and production continuity of the equipment.

[0036] Optionally, the first front-end fluid distribution channel 110 and the first rear-end fluid distribution channel 310 form an included angle γ1. The first front-end fluid distribution channel 110, the second front-end fluid distribution channel 120, the first rear-end fluid distribution channel 310, and the second rear-end fluid distribution channel 320 are symmetrically arranged with the angle bisector of the included angle γ1 as the axis of symmetry. This symmetrical structural design ensures that the two fluid streams after being split from the inlet experience exactly the same flow path length and fluid resistance before entering the first collision chamber 200, thereby achieving equilibrium and stability in fluid dynamics. This ensures that the two high-speed fluid streams have completely equal pressure and flow velocity when entering the first collision chamber 200. This allows the collision point of the two fluid streams to be stably maintained at a fixed position in the collision chamber, avoiding collision point offset, energy loss, and asymmetric scouring of the inner wall of the chamber caused by uneven flow velocity or pressure. Therefore, this symmetrical arrangement improves the energy exchange efficiency and homogenization effect of a single collision, ensuring the stability and repeatability of the dispersion process.

[0037] Optionally, the inner diameter of the first front-end fluid distribution channel 110 is equal to the inner diameter of the second front-end fluid distribution channel 120. This is to ensure that the fluid entering from a single inlet can be evenly divided into two streams. Since the fluid resistance of the two distribution channels is exactly the same, this ensures that the two fluid streams have exactly the same pressure, velocity, and momentum when entering the first collision chamber 200, thereby achieving a stable, centered, and energy-efficient head-on collision. This provides an ideal pre-dispersion basis for the subsequent secondary collision and maximizes the dispersion effect of the initial collision.

[0038] Optionally, the inner diameter of the first rear fluid distribution channel 310 is equal to the inner diameter of the second rear fluid distribution channel 320. This arrangement ensures that the relatively turbulent fluid after the first collision can be symmetrically and equally introduced into the flow channel leading to the second collision chamber 400. This allows the two fluid streams entering the second collision chamber 400 to have equal momentum, creating ideal hydrodynamic conditions for achieving a second, efficient, and stable center collision, thereby ensuring the consistency of the overall dispersion process and the uniformity of the final product.

[0039] Optionally, the inner diameter of the first front fluid distribution channel 110 is equal to the inner diameter of the second front fluid distribution channel 120, and both are the first inner diameter D1. The inner diameters of the first rear fluid distribution channel 310 and the second rear fluid distribution channel 320 are equal, and both are the second inner diameter D2. The second inner diameter D2 is smaller than the first inner diameter D1. This stepped size configuration with a wider front and narrower rear is a design to achieve efficient and stable dispersion.

[0040] The first inner diameter, D1, has a size of 100-200 micrometers. This range ensures a sufficiently wide channel to smoothly pass through the olefin-carbon material slurry containing large initial agglomerates, thus reducing the risk of blockage in the initial feeding stage. Simultaneously, it provides initial constraint and acceleration of the fluid, offering ideal pre-dispersion conditions for the first collision, essentially performing a roughing process on the material. The second inner diameter, D2, has a size no greater than 50 micrometers. The subsequent abrupt narrowing of the channel to this size, based on the principle of fluid continuity, rapidly accelerates the fluid to a high linear velocity before entering the second collision chamber 400. This allows the two fluid streams in the second collision to carry enormous kinetic energy, generating impact forces, shear forces, and a stronger cavitation effect than the first collision. This fine-processing step is specifically designed to break up the more stubborn, fine agglomerates remaining after the first collision, ensuring the eventual deagglomeration and nanoscale uniform dispersion of the olefin-carbon material.

[0041] Optionally, the front fluid channel 100 may be made of diamond or zirconium oxide, and / or the rear fluid channel 300 may be made of diamond or zirconium oxide. These two ultra-hard, wear-resistant materials are used to cope with ultra-high pressure (up to 300 MPa and above) working conditions and the high abrasiveness of carbon materials (such as graphene and carbon nanotubes). Their excellent hardness and wear resistance can resist the continuous impact and friction of high-speed fluids, ensuring that the micron-level inner diameter of the flow channel and the precise flow channel angle maintain design accuracy even after long-term operation, thereby extending the service life of the homogenizing chamber and ensuring the long-term stability and repeatability of the dispersion effect.

[0042] As a more optimized solution that balances cost and performance, the front-end fluid channel 100 can be made of zirconium oxide, while the rear-end fluid channel 300 can be made of diamond. The front-end fluid channel 100 has a larger inner diameter and a relatively lower fluid velocity. Using zirconium oxide, a relatively low-cost material with excellent wear resistance, can meet wear resistance requirements while controlling the overall manufacturing cost of the cavity. In contrast, the rear-end channel has a narrower inner diameter, where the fluid is accelerated to a higher velocity, resulting in the most severe impact and wear on the channel. Using diamond, the hardest material available, provides excellent strength and wear resistance protection for this working area, ensuring that the cavity will not fail due to wear under harsh operating conditions, thus guaranteeing the final dispersion effect and the reliability of the equipment.

[0043] In some embodiments of the present invention, the rear fluid channel 300 further includes a third rear fluid branch channel 330 and a fourth rear fluid branch channel 340. The outlet of the first rear fluid branch channel 310 is connected to the second collision chamber 400 through the third rear fluid branch channel 330, and an angle β2 is formed between the first rear fluid branch channel 310 and the third rear fluid branch channel 330. The outlet of the second rear fluid branch channel 320 is connected to the second collision chamber 400 through the fourth rear fluid branch channel 340, and an angle β3 is formed between the second rear fluid branch channel 320 and the fourth rear fluid branch channel 340. An angle β4 is formed between the third rear fluid branch channel 330 and the fourth rear fluid branch channel 340. In other words, after colliding in the first collision chamber 200, one stream of fluid sequentially passes through the first rear fluid distribution channel 310 and the third rear fluid distribution channel 330 into the second collision chamber 400, where it collides with fluid from the fourth rear fluid distribution channel 340. The other stream of fluid sequentially passes through the second rear fluid distribution channel 320 and the fourth rear fluid distribution channel 340 into the second collision chamber 400, where it collides with fluid from the third rear fluid distribution channel 330. When the high-speed fluid, having already undergone the first collision, is forced to make a sharp turn (defined by the included angles β2 and β3) within a narrow channel, several additional dispersion effects occur. First, a strong internal velocity gradient is generated at the corner, introducing a secondary shear force, which further promotes the exfoliation and deagglomeration of the olefinic carbon material. Second, the high-speed impact of the fluid against the inner wall of the corner is equivalent to adding an additional wall impact dispersion effect beyond the main collision, further enhancing energy dissipation and particle breakage.

[0044] Based on this, the inner diameter of the third rear fluid distribution channel 330 is no greater than the inner diameter of the first rear fluid distribution channel 310, and the inner diameter of the fourth rear fluid distribution channel 340 is no greater than the inner diameter of the second rear fluid distribution channel 320. This dimensional constraint ensures that the fluid will not decelerate when passing through the corner, but will maintain or even increase its kinetic energy, thereby enhancing the effects of the above-mentioned secondary shearing and wall impact.

[0045] Finally, the two fluids, having undergone this series of pretreatments, collide again within the second collision chamber 400. This zigzag flow channel design effectively adds an extra shearing and impact process to each fluid between the two main collisions, thereby increasing the total dispersion energy input per pass through the homogeneous chamber and achieving better nano-dispersion.

[0046] Optionally, the included angle β2 equals the included angle β3, and the included angle β1 equals the included angle β4. The included angle β2 equaling the included angle β3 ensures that the two fluid streams flowing from the first collision chamber 200 follow completely mirror-symmetric paths to the second collision chamber 400, keeping the fluid resistance, secondary shear effects caused by the corners, and wall impacts as consistent as possible. This ensures that after undergoing the same energy dissipation and pretreatment, the two fluid streams enter the second collision chamber 400 with approximately the same momentum and velocity, providing initial conditions for a second, efficient, and stable central collision, thus enhancing the dispersion effect of the secondary collision. Simultaneously, the included angle β1 equaling the included angle β4 makes the flow field distribution in the entire two-stage dispersion process more uniform and stable, avoiding local eddies or pressure anomalies caused by abrupt changes in channel geometry, further improving the overall stability, controllability, and predictability of the entire two-stage dispersion process, and ensuring a high degree of uniformity in the final product quality.

[0047] Optionally, the inner diameter of the third rear fluid distribution channel 330 is equal to the inner diameter of the first rear fluid distribution channel 310, and the inner diameter of the fourth rear fluid distribution channel 340 is equal to the inner diameter of the second rear fluid distribution channel 320. This design ensures that the cross-sectional area of ​​the channel remains constant before and after the fluid passes through the corner of the zigzag flow channel. Based on the principle of fluid continuity, a constant inner diameter can maintain the high-speed motion of the fluid throughout the entire rear flow channel, avoiding deceleration that may be caused by changes in the channel cross-section. Secondly, maintaining a constant inner diameter also avoids additional pressure loss caused by sudden contraction or expansion of the channel, helping to maintain the high-pressure state of the entire system and improving energy utilization efficiency. This ensures that after experiencing exactly the same path and force, the two fluid streams can merge into the second collision chamber 400 with completely equal momentum and energy, thus providing a reliable guarantee for achieving a stable and energy-maximizing central collision, ultimately ensuring a high degree of consistency in the dispersion process and the uniformity of the final product.

[0048] In some embodiments of the present invention, the front-end fluid channel 100 further includes a third front-end fluid sub-channel 130 and a fourth front-end fluid sub-channel 140. The third front-end fluid sub-channel 130 is formed at the inlet of the first front-end fluid sub-channel 110 and forms an angle α2 with the first front-end fluid sub-channel 110. The fourth front-end fluid sub-channel 140 is formed at the inlet of the second front-end fluid sub-channel 120 and forms an angle α3 with the second front-end fluid sub-channel 120. The fourth front-end fluid sub-channel 140 forms an angle α4 with the third front-end fluid sub-channel 130. In other words, fluid flows into the first front-end fluid sub-channel 110 through the third front-end fluid sub-channel 130 and simultaneously flows into the second front-end fluid sub-channel 120 through the fourth front-end fluid sub-channel 140. This design is equivalent to adding a zigzag pretreatment stage before the fluid enters the main acceleration channel (i.e., the first and second front-end fluid sub-channels). When the fluid is forced to turn at specific angles (α2 and α3), initial turbulence and shearing are generated at the cavity inlet, which can soften and pre-decompose the largest and most unstable initial agglomerates of olefinic materials in the slurry. This allows the subsequent main collision process to focus more on processing smaller agglomerates, thereby improving the overall dispersion hierarchy and efficiency.

[0049] The inner diameter of the third front-end fluid distribution channel 130 is not less than the inner diameter of the first front-end fluid distribution channel 110, and the inner diameter of the fourth front-end fluid distribution channel 140 is not less than the inner diameter of the second front-end fluid distribution channel 120. This inlet design, wider than or equal to the size of the subsequent channels, provides a buffering and guiding effect. It ensures that the raw slurry containing large initial agglomerates can smoothly enter the flow channel system without immediately forming accumulations and blockages at the narrow inlet, thereby improving the operational reliability and anti-clogging capability of the entire homogenization chamber, enabling it to better adapt to slurries in different initial states.

[0050] Optionally, the inner diameter of the third front-end fluid distribution channel 130 is equal to the inner diameter of the first front-end fluid distribution channel 110, and the inner diameter of the fourth front-end fluid distribution channel 140 is equal to the inner diameter of the second front-end fluid distribution channel 120. This design ensures that the cross-sectional area of ​​the fluid remains constant as it passes through the zigzag flow channel at the inlet. This maintains a stable flow state of the fluid throughout the entire front-end channel, avoiding pressure fluctuations or unnecessary energy losses that may be caused by changes in the channel cross-section.

[0051] Optionally, the included angle α2 equals the included angle α3, and the included angle α1 equals the included angle α4. This series of equal angles collectively constructs a symmetrical flow channel geometry at the inlet. The fact that included angle α2 equals included angle α3, combined with the aforementioned constant channel inner diameter, ensures that the two fluid streams splitting from a single inlet experience identical path lengths and fluid resistances. This guarantees that the fluid is precisely and evenly divided into two streams, allowing both streams to enter the first collision chamber 200 with completely equal momentum and velocity. This contributes to achieving a stable, centered head-on collision with maximized energy utilization.

[0052] Optionally, the main body also includes a feed channel, with the inlets of the third front-end fluid distribution channel 130 and the fourth front-end fluid distribution channel 140 both connected to the feed channel. This structural design uses a single shared feed channel to simultaneously supply material to two symmetrical inlet channels (i.e., the third and fourth front-end fluid distribution channels), ensuring equal distribution of the two subsequent fluid streams from the source. Specifically, since the two branch inlets are connected to the same high-pressure source, the static pressure of the fluid at their inlets is equal. Combined with the symmetrical channel design, this physical principle enables the precise and equal division of the original slurry into two fluid streams with the same mass flow rate and momentum. This initial equalization ensures efficient and stable central collisions within the first collision chamber 200 and even the second collision chamber 400, reducing the risk of collision point shift, energy loss, and decreased dispersion effect due to uneven feeding. Furthermore, this design simplifies external piping connections and improves the overall integration and reliability of the system.

[0053] like Figure 2 As shown, in some embodiments of the present invention, a cooling channel (not shown in the figure) is also provided in the main body, and the cooling medium in the cooling channel is used to cool the main body. The cooling medium enters through the inlet of the cooling channel, flows through the cooling channel, cools the valve body, and then cools the fluid channel unit, so that the fluid channel unit is at the target temperature.

[0054] Because the ultra-high pressure homogenization process converts enormous pressure energy into kinetic energy, which is then dissipated into heat energy through intense impact, shearing, and friction, a large amount of heat is generated within the chamber. The cooling channel design actively and continuously removes this generated heat, thereby controlling the temperature of the entire homogenization process within a stable low-temperature range. This prevents the dispersant's performance from deteriorating or the solvent from vaporizing due to localized overheating, avoids secondary agglomeration of the dispersed olefinic materials at high temperatures, and ensures the nano-dispersion effect and long-term storage stability of the final slurry. Furthermore, the stable low-temperature operating conditions also prevent the equipment from requiring intermittent shutdowns for cooling due to heat accumulation, improving production continuity and overall efficiency, protecting the chamber materials from excessive thermal stress, and extending the equipment's service life.

[0055] In some embodiments of the present invention, multiple fluid channel units are arranged in parallel. This parallel design enables linear scaling up of the processing throughput, allowing the total material flow to be divided into multiple streams, each processed within an independent fluid channel unit with complete two-stage collision functionality. Since the internal fluid dynamics characteristics of each parallel unit are identical, this design can increase the overall equipment's production capacity several times without altering the dispersion mechanism and dispersion quality, and provides modular scalability, ensuring consistent product quality across different batches and scales.

[0056] In other embodiments of the invention, multiple fluid channel units are arranged in series. However, it is important to note that the inner diameter of the downstream fluid channel is no larger than the inner diameter of the upstream fluid channel. This series structure constructs a multi-stage, progressively enhanced deep dispersion mode, enabling deep processing of materials. During a single pass through the device, the fluid sequentially experiences multiple bi-stage collision units, equivalent to four, six, or even more consecutive high-intensity impacts in a single process. The design of "downstream inner diameter no larger than upstream inner diameter" ensures that the fluid velocity and energy density do not decrease as it moves from one unit to the next, and may even increase further. This design can break up stubborn micro-agglomerates, achieving a more thorough dispersion effect in a single pass through the device, ultimately obtaining a nano-slurry with ultra-high uniformity far exceeding that achievable with conventional cyclic processing.

[0057] In some embodiments of the present invention, the valve body is further provided with a discharge channel, which is connected to the feed channel. When the fluid channel unit becomes blocked, the fluid in the feed channel is discharged from the valve body through the discharge channel, indicating to the operator that the fluid channel unit is blocked, and the operator stops the machine for maintenance.

[0058] A specific embodiment of the second aspect of the present invention provides a microjet homogenizer, comprising a homogenizing cavity for nano-dispersion of olefinic carbon materials as described in any of the above embodiments, and a cooling system; the cooling system is connected to the homogenizing cavity and is used to reduce the temperature of the homogenizing cavity. Specifically, a low-temperature cooling medium is discharged from the outlet of the cooling system. The low-temperature cooling medium enters the cooling channel from the inlet of the cooling channel, exchanges heat in the valve body, and is discharged from the outlet of the cooling channel, finally returning through the inlet of the cooling system to form a circulating cooling.

[0059] Since the microfluidic homogenizer of this embodiment includes the homogenizing cavity for nano-dispersion of olefinic carbon materials in any of the above embodiments, it has at least the above advantages, which will not be repeated here.

[0060] A third aspect of the present invention provides a method for nano-dispersion of olefinic carbon materials, employing a microfluidic homogenizer as described in any of the above embodiments, comprising: S1. The olefin carbon material, dispersant and solvent are mixed to obtain a premixed slurry, which provides a uniform material basis for the subsequent high-pressure homogenization process, avoids the blockage that may be caused by the direct entry of dry powder into the high-pressure system, and improves the efficiency and consistency of the subsequent dispersion steps.

[0061] Specifically, the dispersant is added to the solvent and stirred at 500-1000 rpm until completely dissolved to form a uniform dispersion system; then the olefin carbon material is added and sheared at 3000-10000 rpm for 20-60 minutes using a high-speed shearing machine to reduce the particle size of the agglomerates to 5-10 μm, creating favorable conditions for subsequent microfluidic homogenization, thus successfully preparing the premixed slurry.

[0062] Optionally, the dispersant can be selected from at least one of anionic dispersants, nonionic dispersants, and polymeric dispersants. Anionic dispersants, after dissociation in water, become negatively charged and primarily prevent particle aggregation through electrostatic repulsion; examples include sodium dodecyl sulfate (SDS). Nonionic dispersants do not dissociate in water and primarily stabilize dispersion through steric hindrance (i.e., the polymer chains form a physical barrier on the particle surface); examples include polyvinylpyrrolidone. Polymeric dispersants combine anionic and polymeric properties, providing both electrostatic repulsion and steric hindrance; examples include sodium lignosulfonate or sodium carboxymethyl cellulose (CMC).

[0063] Optionally, the carbon material includes at least one of graphene or carbon nanotubes. For example, by weight percentage, the premixed slurry includes 0.1% to 1% carbon nanotubes, 1% to 5% dispersant, and the balance being solvent. For example, by weight percentage, the premixed slurry includes 0.5% to 5% graphene, 1% to 5% dispersant, and the balance being solvent.

[0064] S2. Control the cooling system to keep the temperature of the homogenizing chamber used for nano-dispersion of olefinic materials in any of the above embodiments below 40°C. Since high-pressure homogenization generates a large amount of heat, and high temperatures reduce the activity of the dispersant and exacerbate Brownian motion of the particles, leading to secondary agglomeration, controlling the temperature below 40°C can protect the chemical stability and function of the dispersant, inhibit the thermally induced re-agglomeration of dispersed particles, thereby ensuring the high dispersion quality and long-term storage stability of the final slurry.

[0065] S3. The premixed slurry is injected into the homogenizing chamber, where it undergoes two collisions sequentially in the first collision chamber 200 and the second collision chamber 400, and then discharged from the homogenizing chamber. The discharged premixed slurry is then fed back into the homogenizing chamber as the slurry to be processed, and this process is repeated 3-8 times. Finally, the slurry that has undergone the recycling process is collected and filtered to obtain the finished slurry. Recycling 3-8 times shortens the production cycle, reduces total energy consumption, and minimizes excessive shear damage to carbon materials (such as carbon nanotubes), better protecting the intrinsic properties of the material while ensuring dispersion. The filtration step removes any remaining, incompletely dispersed, small amounts of large agglomerates or impurities from the system, ensuring the uniformity and purity of the final slurry to meet the quality requirements of downstream applications (such as battery electrodes, conductive coatings, etc.).

[0066] Specifically, the premixed slurry is placed in the feed tank of the microjet homogenizer, and pressurized and fed into the homogenization chamber by a high-pressure pump. The homogenization pressure is controlled at 500~2000 bar, and the number of cycles is 3~8. After homogenization, the slurry is filtered through a 100-mesh sieve to remove any possible small amounts of large particles or foreign matter, resulting in a homogeneous finished slurry.

[0067] Example 1 This embodiment 1 provides a homogeneous cavity for nano-dispersion of olefinic carbon materials, including a body, and a fluid channel unit constructed inside the body. The fluid channel unit includes a feed channel, a front fluid channel 100, a first collision chamber 200, a rear fluid channel 300 and a second collision chamber 400 connected in series.

[0068] The front-end fluid channel 100 includes a first front-end fluid branch channel 110, a second front-end fluid branch channel 120, a third front-end fluid branch channel 130, and a fourth front-end fluid branch channel 140, all with equal inner diameters. The inlet of the third front-end fluid branch channel 130 and the inlet of the fourth front-end fluid branch channel 140 are both connected to the feed channel. The outlet of the third front-end fluid branch channel 130 is connected to the inlet of the first front-end fluid branch channel 110, and the outlet of the first front-end fluid branch channel 110 is connected to the first collision chamber 200. The outlet of the fourth front-end fluid branch channel 140 is connected to the inlet of the second front-end fluid branch channel 120, and the outlet of the second front-end fluid branch channel 120 is connected to the first collision chamber 200. Specifically, the fourth front-end fluid distribution channel 140 and the third front-end fluid distribution channel 130 form an angle α4, the fourth front-end fluid distribution channel 140 and the second front-end fluid distribution channel 120 form an angle α3, the third front-end fluid distribution channel 130 and the first front-end fluid distribution channel 110 form an angle α2, and the first front-end fluid distribution channel 110 and the second front-end fluid distribution channel 120 form an angle α1. Angle α4 is equal to angle α1, and angle α2 is equal to angle α3.

[0069] The rear fluid channel 300 includes a first rear fluid sub-channel 310, a second rear fluid sub-channel 320, a third rear fluid sub-channel 330, and a fourth rear fluid sub-channel 340, all with equal inner diameters. An angle γ1 is formed between the first front fluid sub-channel 110 and the first rear fluid sub-channel 310. The first front fluid sub-channel 110, the second front fluid sub-channel 120, the first rear fluid sub-channel 310, and the second rear fluid sub-channel 320 are symmetrically arranged about the angle bisector of γ1 as the axis of symmetry. The inlets of the first rear fluid sub-channel 310 and the second rear fluid sub-channel 320 are both connected to the first collision chamber 200. The outlet of the first rear fluid sub-channel 310 is connected to the inlet of the third rear fluid sub-channel 330, and the outlet of the third rear fluid sub-channel 330 is connected to the second collision chamber 400. The outlet of the second rear fluid sub-channel 320 is connected to the inlet of the fourth rear fluid sub-channel 340, and the outlet of the fourth rear fluid sub-channel 340 is connected to the second collision chamber 400. Specifically, the first rear fluid distribution channel 310 and the second rear fluid distribution channel 320 form an angle β1, the first rear fluid distribution channel 310 and the third rear fluid distribution channel 330 form an angle β2, the second rear fluid distribution channel 320 and the fourth rear fluid distribution channel 340 form an angle β3, and the third rear fluid distribution channel 330 and the fourth rear fluid distribution channel 340 form an angle β4. Angle β1 equals angle β4, and angle β2 equals angle β3. The second collision chamber 400 is also connected to the outlet of the valve body.

[0070] Example 2 This embodiment 2 provides a method for nano-dispersion of olefinic carbon materials. The method includes the following steps: Preparation of premixed slurry: Add dispersant polyvinylpyrrolidone (PVP) to solvent N-methylpyrrolidone (NMP) and stir at 500 rpm for 30 min until completely dissolved; then add graphene powder and disperse at 5000 rpm for 30 min using a high-speed shear press to obtain a premixed slurry with 1% graphene and 2% dispersant by mass percentage.

[0071] Homogenization and dispersion: Homogenization was performed using the homogenization chamber described in Example 1. The homogenization pressure was 1500 bar, and the number of cycles was 3. The homogenate was then passed through a 100-mesh sieve to obtain the finished slurry. Furthermore, during homogenization, cooling water was introduced into the cooling channels through a cooling system to control the homogenization temperature below 40°C. The inner diameter of the front fluid channel was 200 micrometers, and the inner diameter of the rear fluid channel was 50 micrometers.

[0072] Comparative Example 1 Comparative Example 1 provides a method for nano-dispersion of olefinic carbon materials. The difference between the method for nano-dispersion of olefinic carbon materials provided in Comparative Example 1 and Example 2 is that Comparative Example 1 uses a conventional Y-shaped cavity for homogenization, while the other steps are the same as in Example 2.

[0073] The microstructure of the finished slurries prepared in Example 2 and Comparative Example 1 was observed using scanning electron microscopy, and the results are as follows: Figure 3 As shown. From Figure 3 It can be seen that the finished slurry of Comparative Example 1 still contains obvious graphene clumps and is unevenly dispersed; while the finished slurry of Example 2 shows fully exfoliated graphene sheets, uniform dispersion, and no obvious large particle agglomeration. In other words, under the same homogenization pressure and number of homogenization cycles, the homogenization of Comparative Example 1 can achieve graphene exfoliation, but there are still obvious clumps and uneven dispersion; while the finished slurry of Example 2 shows uniform graphene dispersion and no obvious large particle agglomeration. Example 2 significantly improves the finished product, saves homogenization cycles, and increases efficiency.

[0074] The particle size distribution of Example 2 and Comparative Example 1 before and after homogenization was detected using a laser particle size analyzer. The results are as follows: Figure 4 As shown in Figure 1 and Table 1. From Figure 4 As can be seen from Table 1, both Comparative Example 1 and Example 2 have a dispersion effect, but the D90, D95 and D100 values ​​after dispersion in Example 2 are smaller.

[0075] Table 1. Particle size distribution of premixed slurry, finished slurry of Comparative Example 1, and finished slurry of Example 2. Comparative Example 2 Comparative Example 2 provides a method for nano-dispersion of olefin carbon materials. The difference between the nano-dispersion method for olefin carbon materials provided in Comparative Example 2 and Example 2 is that Comparative Example 2 uses a conventional Y-shaped cavity for homogenization and changes the number of cycles (3, 5, 6, 7, 8, 10 and 12 times). The other steps are the same as in Example 2.

[0076] Results Analysis: In Comparative Example 2, the particle size gradually decreased with increasing cycle number. Only after 6 cycles (D90≈2.71 μm) was the particle size (D90≈2.68 μm) comparable to that of Example 2 after 3 cycles. This indicates that, compared to a conventional Y-shaped cavity, the homogeneous cavity of this invention requires 50% fewer cycles to achieve the same dispersion effect.

[0077] Example 3 Example 3 provides a method for nano-dispersion of olefinic carbon materials. The method includes the following steps: Preparation of premixed slurry: Sodium carboxymethyl cellulose (CMC) dispersant was added to water at 70°C and stirred, then carbon nanotubes were added and stirred until homogeneous. The mixture was dispersed at 5000 rpm for 3 hours using a high-speed shear press to obtain a premixed slurry containing 0.5% carbon nanotubes and 3% dispersant by mass percentage.

[0078] Homogenization and dispersion: Homogenization was performed using the homogenization chamber described in Example 1. The homogenization pressure was 1500 bar, and the number of cycles was 6. The homogenate was then passed through a 100-mesh sieve to obtain the finished slurry. Furthermore, during homogenization, cooling water was introduced into the cooling channels through a cooling system to control the homogenization temperature below 40°C. The inner diameter of the front fluid channel was 200 micrometers, and the inner diameter of the rear fluid channel was 50 micrometers.

[0079] Comparative Example 3 Comparative Example 3 provides a method for nano-dispersion of olefinic carbon materials. The difference between the nano-dispersion method for olefinic carbon materials provided in Comparative Example 3 and Example 3 is that Comparative Example 3 uses a conventional Z-shaped cavity for homogenization, while the other steps are the same as in Example 3.

[0080] The microstructure of the finished slurries prepared in Example 3 and Comparative Example 3 was observed using scanning electron microscopy, and the results are as follows: Figure 5 As shown. The particle size distribution of the finished slurries from Example 3 and Comparative Example 3 was detected using a laser particle size analyzer. From Figure 5 It can be seen that the carbon nanotubes in the finished slurry of Example 3 are uniformly dispersed without obvious bundle agglomeration, while the finished slurry of Comparative Example 3 shows obvious bundle agglomeration. Furthermore, the D50 of the finished slurry of Example 3 is 0.106 μm, and the viscosity is 526.45 mPa•s. The D50 of the finished slurry of Comparative Example 3 is 6.32 μm, and the viscosity is 3870 mPa•s.

[0081] Example 4 Slurry preparation: Same as in Example 2.

[0082] Homogeneous dispersion: Using the homogeneous cavity of Example 1, but changing the inner diameter of the front and rear fluid channels, three sets of experiments were set up: Group A: The inner diameter of the front fluid channel is 200 μm, and the inner diameter of the rear fluid channel is 50 μm; Group B: The inner diameter of the front fluid channel is 100 μm, and the inner diameter of the rear fluid channel is 50 μm; Group C (control group): The inner diameter of the front fluid channel is 50 μm, and the inner diameter of the rear fluid channel is 50 μm (i.e., no size gradient).

[0083] The homogenization pressure for all three groups was 1500 bar, and the number of cycles was 3.

[0084] Results analysis: Groups A and B did not experience clogging during the homogenization process, and their dispersion effects were similar; Group C experienced clogging during the second homogenization cycle, causing the equipment to shut down. This indicates that the size gradient design, with larger sizes at the beginning and smaller sizes at the end, plays an important role in preventing clogging.

[0085] Example 5 Slurry preparation: Same as in Example 2.

[0086] Homogeneous dispersion: Using the homogenizing chamber provided in Example 1, different homogenizing pressures (500 bar, 1000 bar, 1500 bar, 2000 bar) and different number of cycles (1, 3, 5, 8) were set to examine the dispersion effect.

[0087] Results analysis: The particle size gradually decreased with increasing pressure and number of cycles. When the pressure reached 1500 bar and the number of cycles was 3, the particle size tended to stabilize (D90≈2.68μm). Further increases in pressure or number of cycles did not significantly improve particle size, but increased energy consumption. Therefore, the preferred process parameters are a pressure of 1500~2000 bar and 3~5 cycles.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A homogeneous cavity for nano-dispersion of olefinic carbon materials, characterized in that, The system includes a body, which has a fluid channel unit inside. The fluid channel unit includes a front fluid channel (100), a first collision chamber (200), a rear fluid channel (300), and a second collision chamber (400) connected in series. The front-end fluid channel (100) includes a first front-end fluid sub-channel (110) and a second front-end fluid sub-channel (120) for guiding fluid to the first collision cavity (200), wherein the first front-end fluid sub-channel (110) and the second front-end fluid sub-channel (120) form an angle α1; The rear fluid channel (300) includes a first rear fluid sub-channel (310) and a second rear fluid sub-channel (320); the inner diameter of the first front fluid sub-channel (110) is larger than the inner diameter of the first rear fluid sub-channel (310) and the second rear fluid sub-channel (320), and the inner diameter of the second front fluid sub-channel (120) is larger than the inner diameter of the first rear fluid sub-channel (310) and the second rear fluid sub-channel (320); The inlets of the first rear fluid distribution channel (310) and the second rear fluid distribution channel (320) are both connected to the first collision cavity (200), and an angle β1 is formed between the first rear fluid distribution channel (310) and the second rear fluid distribution channel (320); the first rear fluid distribution channel (310) and the second rear fluid distribution channel (320) are both used to guide the fluid from the first collision cavity (200) to the second collision cavity (400); The two fluids flow into the first collision chamber (200) through the first front fluid distribution channel (110) and the second front fluid distribution channel (120) respectively, and collide for the first time. After the collision, the fluids are introduced into the second collision chamber (400) through the first rear fluid distribution channel (310) and the second rear fluid distribution channel (320) respectively, and collide for the second time.

2. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 1, characterized in that, An angle γ1 is formed between the first front-end fluid sub-channel (110) and the first rear-end fluid sub-channel (310). The first front-end fluid sub-channel (110), the second front-end fluid sub-channel (120), the first rear-end fluid sub-channel (310) and the second rear-end fluid sub-channel (320) are symmetrically arranged with the angle bisector of the angle γ1 as the axis of symmetry.

3. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 1, characterized in that, The rear fluid channel (300) also includes: The third rear fluid distribution channel (330) is connected to the second collision chamber (400) through the outlet of the first rear fluid distribution channel (310). An angle β2 is formed between the first rear fluid distribution channel (310) and the third rear fluid distribution channel (330). The inner diameter of the third rear fluid distribution channel (330) is not greater than the inner diameter of the first rear fluid distribution channel (310). The fourth rear fluid distribution channel (340) is connected to the second collision chamber (400) through the outlet of the second rear fluid distribution channel (320). An angle β3 is formed between the second rear fluid distribution channel (320) and the fourth rear fluid distribution channel (340). An angle β4 is formed between the third rear fluid distribution channel (330) and the fourth rear fluid distribution channel (340). The inner diameter of the fourth rear fluid distribution channel (340) is not greater than the inner diameter of the second rear fluid distribution channel (320).

4. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 1, characterized in that, The front-end fluid channel (100) further includes: The third front-end fluid distribution channel (130) is formed at the inlet of the first front-end fluid distribution channel (110) and forms an angle α2 with the first front-end fluid distribution channel (110). The inner diameter of the third front-end fluid distribution channel (130) is not less than the inner diameter of the first front-end fluid distribution channel (110). A fourth front-end fluid distribution channel (140) is formed at the inlet of the second front-end fluid distribution channel (120) and forms an angle α3 with the second front-end fluid distribution channel (120); the fourth front-end fluid distribution channel (140) forms an angle α4 with the third front-end fluid distribution channel (130), and the inner diameter of the fourth front-end fluid distribution channel (140) is not less than the inner diameter of the second front-end fluid distribution channel (120).

5. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 4, characterized in that, The body also has a feeding channel, and the inlet of the third front fluid distribution channel (130) and the inlet of the fourth front fluid distribution channel (140) are both connected to the feeding channel.

6. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 1, characterized in that, The inner diameter of the first front-end fluid channel (110) is equal to the inner diameter of the second front-end fluid channel (120), and both are the first inner diameter D1; the inner diameter of the first rear-end fluid channel (310) is equal to the inner diameter of the second rear-end fluid channel (320), and both are the second inner diameter D2; wherein, the size of the first inner diameter D1 is 100~200 micrometers, and the size of the second inner diameter D2 is not greater than 50 micrometers.

7. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to claim 1, characterized in that, The material of the front fluid channel (100) includes diamond or zirconium oxide, and / or the material of the rear fluid channel (300) includes diamond or zirconium oxide.

8. The homogeneous cavity for nano-dispersion of olefinic carbon materials according to any one of claims 1 to 7, characterized in that, The body is also provided with a cooling channel, and the cooling medium in the cooling channel is used to cool the body.

9. A microjet homogenizer, characterized in that, The invention includes a homogeneous cavity for nano-dispersion of olefinic carbon materials as described in any one of claims 1 to 8, and a cooling system; the cooling system is connected to the homogeneous cavity and is used to reduce the temperature of the homogeneous cavity.

10. A method for nano-dispersion of olefinic carbon materials, characterized in that, The microfluidic homogenizer according to claim 9 comprises: The olefin material, dispersant, and solvent are mixed to obtain a premixed slurry; The cooling system is controlled to keep the temperature of the homogeneous cavity for nano-dispersion of olefinic carbon materials as described in any one of claims 1 to 8 below 40°C. The premixed slurry is injected into the homogenizing chamber, where it undergoes two collisions in the first collision chamber (200) and the second collision chamber (400) before being discharged from the homogenizing chamber. The discharged premixed slurry is then fed back into the inlet of the homogenizing chamber as slurry to be processed, and this process is repeated 3 to 8 times. Finally, the slurry that has undergone the recycling process is collected and filtered to obtain the finished slurry.

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