Collaborative adaptation method for multidimensional reinforced resin fibers in RTM (Resin Transfer Molding) process

Abstract

The invention discloses a collaborative adaptation method for multi-dimensional reinforced resin fibers in an RTM (resin transfer molding) process, relates to the technical field of composite material forming, and aims to solve the technical problems that in the existing RTM process, a multi-dimensional reinforcement is non-uniform in dispersion, the interface bonding is weak, the mechanical property and the lightweight requirement are difficult to consider at the same time, and the forming defect rate of a complex structural part is high. According to the method, a four-dimensional collaborative technology system of reinforcement system precise design, modifier directional adaptation, interface chemical bonding reinforcement and process dynamic matching is constructed. According to the method, ordered arrangement of two-dimensional nanometer reinforcements in the axial direction of one-dimensional fibers is achieved through directional magnetic field assisted airflow dispersion; a quaternary phosphonium salt modifier is designed to realize nanoscale dispersion and ordered interweaving of reinforcements, a silane coupling agent is introduced to construct a three-in-one interface bonding network, and a segmented pressure-temperature-vacuum degree dynamic adaptation process is adopted to guarantee the forming quality. The method is suitable for industrial production of large-size complex structural parts such as automobile body covering parts, and collaborative improvement of high toughness and light weight is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of composite material forming technology, in particular to a method for synergistic adaptation of multi-dimensional reinforced resin fibers in RTM process, especially suitable for large-scale preparation of high-strength and lightweight composite materials for automobile body coverings. BACKGROUND

[0002] With the increasingly stringent regulations of energy saving and emission reduction in the automotive industry, lightweight has become the core direction of automotive technology upgrading. Resin transfer molding (RTM) process has become a key technology path for lightweight manufacturing of automobile body coverings due to its high forming efficiency, good part precision and suitability for production of complex structural parts. Multi-dimensional reinforced composite materials (such as one-dimensional fiber and two-dimensional nanomaterial composite system) have become the core material selection of RTM process due to their high specific strength and great weight reduction potential. However, there are still technical bottlenecks that are difficult to break through in the existing technology: 1. Synergistic problem of dispersion and orientation control of two-dimensional nanometer reinforcing body: the existing technology only realizes the dispersion of two-dimensional reinforcing body through single airflow or mechanical dispersion, which cannot realize uniform dispersion and directional arrangement at the same time, leading to easy aggregation or disordered accumulation of reinforcing body, and difficult to form synergistic reinforcing effect, and the increase of heterogeneous interface easily causes the decrease of tensile performance; 2. Essential defect of reinforcing body-resin interface bonding: one-dimensional fiber and two-dimensional reinforcing body are combined with resin matrix only by physical adsorption, the interface bonding force is weak, and the interface peeling is easily caused by external force or environmental factors, which restricts the improvement of mechanical properties of composite materials; 3. Insufficient adaptability of process and material system: the existing process parameters are mostly fixed value setting, and are not dynamically adjusted according to the infiltration characteristics and rheological law of reinforcing body-resin system, leading to easy generation of defects such as pores and bubbles in the filling process, and difficult to balance lightweight and mechanical properties; 4. Poor adaptability to harsh working conditions: the existing composite materials have obvious performance degradation under typical harsh working conditions of automobile exterior parts such as high temperature, low temperature, radiation and external force impact, which cannot meet the actual application requirements.

[0003] The existing technology focuses on the optimization of single dimension (such as simply improving the dispersion process or adjusting the injection pressure), lacks the systematic integration and innovation of reinforcing body system construction, modifier molecule design, interface bonding strengthening and process dynamic matching, leading to limited performance improvement of multi-dimensional reinforced composite materials, and restricting their industrialized application in the field of automobile lightweight. Therefore, it is of important technical value and application prospect to develop an innovative method for multi-dimensional synergistic adaptation to essentially solve the above technical bottlenecks and realize the efficient synergy of multi-dimensional reinforcing body and resin matrix. SUMMARY

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a synergistic adaptation method for multidimensional reinforced resin fibers in the RTM process. Through a four-dimensional innovative synergy of "reinforcement orientation design, modifier molecule customization, interfacial bonding strengthening, and dynamic process matching," this method fundamentally solves the technical problems of uneven dispersion, weak interfacial bonding, difficulty in balancing performance and lightweighting, and poor adaptability to harsh working conditions. The result is a composite material that combines ultra-high strength and toughness, lightweighting, and high reliability, meeting the industrialization needs of automotive body panels. The specific technical solution is as follows: A method for synergistic adaptation of multidimensional reinforced resin fibers in an RTM process includes the following steps: Construction of S1 Oriented One-Dimensional-Two-Dimensional Reinforced Composite System One-dimensional fiber reinforcement and two-dimensional sheet-like nano reinforcement are selected and mixed at a mass ratio of (50-80):(1-10). After pretreatment, a directional magnetic field-assisted airflow dispersion composite process is used to control the orientation distribution of the two-dimensional sheet-like nano reinforcement along the one-dimensional fiber axis. An array of barriers that delay the diffusion of small molecules is constructed in the fiber axis to form a "fiber-nanosheet" directional interwoven structure. Customized S2 molecular structure modifier design and reinforcement surface modification Quaternary phosphorus salt modifiers are designed, whose hydrophobic groups form intercalation interactions with the two-dimensional reinforcement sheets, and whose hydrophilic groups form hydrogen bonds or chemical bonds with the resin matrix. They are added to the resin matrix at 0.5-5% of the resin mass. The two-dimensional reinforcement is dispersed in the resin at the nanoscale using ultrasonic-mechanical dispersion technology. The orderly arrangement of the two-dimensional reinforcement sheets and one-dimensional fibers is controlled by electrostatic interaction and the steric hindrance effect of the modifier. S3 Trinity Interface Bonding Enhancement A silane coupling agent is added to the resin matrix at an amount of 0.3-2% of the resin mass. One end of the silane coupling agent forms a covalent bond with the hydroxyl groups on the surface of the one-dimensional fiber and the two-dimensional reinforcement, while the other end undergoes a cross-linking reaction with the resin matrix to construct a dual interfacial bonding network of "fiber-coupling agent-resin" and "nanosheet-coupling agent-resin". S4 Dynamically Adaptive RTM Process Parameter Optimization Based on the wetting characteristics and rheological laws of the reinforcement-resin system, a segmented molding pressure control method is adopted, combined with temperature gradient matching and dynamic vacuum maintenance technology, to complete resin transfer molding and achieve full-process synergistic adaptation between the multidimensional reinforcement and the resin matrix.

[0005] Preferably, the one-dimensional fiber reinforcement in step S1 is glass fiber or carbon fiber with a diameter of 5-20 μm; the two-dimensional layered nanoreinforcement is selected from at least one of montmorillonite, graphene, and hydrotalcite, with a layer thickness of 1-10 nm and a sheet diameter of 50-500 nm.

[0006] Preferably, the pretreatment in step S1 includes: treating the one-dimensional fiber reinforcement with silane coupling agent KH-550 or KH-560 at 80-120℃ for 2-4 hours, with a surface active group grafting rate ≥85%; and vacuum drying the two-dimensional lamellar nano-reinforcement at 100-150℃ for 4-8 hours, with a moisture content controlled below 0.5%.

[0007] Preferably, the process parameters for the directional magnetic field-assisted airflow dispersion composite process in step S1 are: airflow velocity 5-15 m / s, dispersion time 10-30 min, ambient humidity 30-50%, directional magnetic field strength 0.05-0.2 T, magnetic field direction consistent with the one-dimensional fiber axis, and axial orientation of the two-dimensional reinforcement ≥80%.

[0008] Preferably, the quaternary phosphonium salt modifier in step S2 is tributylhexylphosphonium bromide or tetrabutylphosphonium bromide, the mass ratio of the modifier to the two-dimensional layered nano-reinforcement is (0.2-1):1; the ultrasonic dispersion power is 100-300W, the ultrasonic time is 20-60min; the mechanical stirring speed is 500-1500r / min, the stirring time is 30-90min, the stirring temperature is 30-60℃, and the dispersed particle size of the two-dimensional reinforcement in the resin is ≤100nm.

[0009] Preferably, the silane coupling agent in step S3 is one or more of KH-550, KH-560 or KH-570 in a compound ratio of any ratio, and the interfacial shear strength is increased by ≥30%.

[0010] Preferably, the segmented mold filling pressure control in step S4 is as follows: the injection pressure is 0.3-0.5 MPa in the initial stage of mold filling (accounting for 2-3 / 10), the pressure is increased to 0.5-0.7 MPa in the middle stage of mold filling (accounting for 4-5 / 10), and the pressure is maintained at 0.6-0.8 MPa in the later stage of mold filling (accounting for 1-2 / 10); the injection temperature is 40-80℃, the mold temperature is 60-120℃, the vacuum degree is dynamically maintained at -0.09~-0.098 MPa, and the porosity of the part is ≤5%.

[0011] Preferably, the resin matrix is ​​one of epoxy resin, unsaturated polyester resin or vinyl ester resin, the resin viscosity at 25°C is 50-500 mPa·s, the curing time is 1-4 h, and the degree of curing is ≥95%.

[0012] Preferably, the composite material has a tensile strength ≥350MPa, a flexural strength ≥480MPa, an impact strength ≥65kJ / m², a Barcol hardness ≥45, an oxygen index that meets the GB / 38262-2020 standard, and an insoluble resin content ≤82%. Compared with traditional single fiber reinforced composite materials, it reduces weight by more than 30%, reduces glass fiber usage by 30%, and can withstand harsh working conditions such as a temperature range of -40~120℃, a gamma ray irradiation dose ≤10kGy, and an external impact force of 100kJ / m².

[0013] Compared with the prior art, the present invention has the following significant inventive advantages: 1. Four-dimensional collaborative innovation to break through technical bottlenecks: For the first time, a four-dimensional collaborative technology system of "reinforcement orientation - modifier molecule customization - interfacial bonding strengthening - dynamic process matching" was constructed. The entire chain of innovation is carried out from material design, modification methods, interface control to process implementation. It completely solves the technical problem that single-dimensional optimization in the existing technology cannot take into account dispersibility, orientation, interfacial bonding force and molding quality, and achieves a leapfrog improvement in the performance of composite materials. 2. Synergistic optimization of structure and performance, leading in all indicators: Through the construction of directional interwoven reinforcement network and dual interface bonding network, the tensile strength of the composite material is ≥350MPa, flexural strength is ≥480MPa, impact strength is ≥65kJ / m², and Barcol hardness is ≥45, meeting the requirements of GB3854-2005 standard; the oxygen index meets the GB / 38262-2020 standard, and the insoluble resin content is ≤82%, meeting the GB2576-2005 standard; it can withstand harsh working conditions with a temperature range of -40~120℃, gamma ray irradiation dose ≤10kGy, and external force impact of 100kJ / m², solving the problem of poor adaptability of traditional materials to harsh working conditions; 3. Balancing lightweight and economic efficiency, with significant industrialization value: Compared to traditional single-fiber reinforced composite materials, it reduces weight by more than 30% (e.g., reducing automotive gas cylinder covers from 80 kg to 56 kg), reduces glass fiber usage by 30%, effectively reducing automotive fuel consumption and meeting energy conservation and emission reduction requirements; process parameters are stable and controllable, molding efficiency is improved by 30%, part porosity is ≤5%, product qualification rate is ≥98%, enabling mass production of large-size complex structural parts such as automotive body panels, with an annual production capacity of ≥10,000 sets, expected annual sales revenue of ≥12 million yuan, and annual profit and tax of ≥3 million yuan, possessing significant technological value, economic and social benefits, and industrialization prospects; 4. The directional magnetic field-assisted airflow dispersion process, the quaternary phosphonium salt modifier molecule customization design, the three-in-one interface bonding enhancement technology, and the dynamic adaptable RTM process of this invention are all independent innovations. Novelty search has confirmed that no similar technologies have been reported in China, forming a high technical barrier and providing a core advantage for product market competition. Detailed Implementation

[0014] A method for synergistic adaptation of multidimensional reinforced resin fibers in an RTM process includes the following steps: Construction of S1 Oriented One-Dimensional-Two-Dimensional Reinforced Composite System Precise material selection: Glass fiber or carbon fiber is selected as the one-dimensional fiber reinforcement (diameter 5-20μm), and montmorillonite, graphene, or hydrotalcite is selected as the two-dimensional layered nanoreinforcement (layer thickness 1-10nm, sheet diameter 50-500nm), and they are mixed in a mass ratio of (50-80):(1-10). This ratio has been optimized through extensive experiments to ensure the reinforcement effect while avoiding excessive agglomeration of the two-dimensional reinforcement, thus balancing mechanical properties and lightweight requirements.

[0015] Pretreatment process optimization: One-dimensional fiber reinforcements are treated with silane coupling agents KH-550 or KH-560 at 80-120℃ for 2-4 hours to achieve a grafting rate of ≥85% of active groups on the fiber surface, laying the foundation for subsequent interfacial bonding; Two-dimensional lamellar nanoreinforcements are vacuum dried at 100-150℃ for 4-8 hours, with the moisture content strictly controlled below 0.5% to completely remove moisture and avoid bubble defects during the molding process.

[0016] Directional magnetic field-assisted airflow dispersion composite process: This innovative process combines airflow dispersion with the action of a directional magnetic field. Pre-treated one-dimensional fibers are mixed with two-dimensional reinforcements and introduced into an airflow dispersion device (airflow velocity 5-15 m / s, dispersion time 10-30 min, ambient humidity 30-50%). Simultaneously, a directional magnetic field of 0.05-0.2 T is applied (the magnetic field direction is aligned with the one-dimensional fiber axis). The airflow shear force breaks up the two-dimensional reinforcement aggregates, and the magnetic field guides the two-dimensional reinforcements to achieve an ordered orientation along the fiber axis (axial orientation degree ≥80%), constructing an array of barriers that delay the diffusion of small molecules. This spatially balances the decrease in tensile properties caused by the increased heterogeneous interfaces, forming a directionally interwoven "fiber-nanosheet" reinforcement network.

[0017] Customized S2 molecular structure modifier design and reinforcement surface modification Customized design of modifier molecules: Quaternary phosphonium salt modifiers (tributylhexadecanylphosphonium bromide or tetrabutylphosphonium bromide) are designed to target the interlayer structure characteristics of two-dimensional reinforcements (such as montmorillonite) and the chemical properties of the resin matrix. The hydrophobic groups in their molecular structure can insert into the interlayer space of the two-dimensional reinforcement, disrupting interlayer forces, while the hydrophilic groups can form hydrogen bonds or chemical bonds with the resin matrix, achieving molecular-level compatibility between the reinforcement and the resin, thus solving the problem of poor compatibility of traditional modifiers.

[0018] Ultrasonic-mechanical dispersion technology: Add modifier at 0.5-5% of resin mass. After mixing the resin and modifier, first disperse the mixture using ultrasound at 100-300W for 20-60 minutes (utilizing ultrasonic cavitation to efficiently break up agglomerates), then mechanically stir at 500-1500 rpm for 30-90 minutes (stirring temperature 30-60℃). Through the synergistic effect of ultrasonic-mechanical dispersion, nanoscale dispersion of two-dimensional reinforcement in the resin is achieved (dispersion particle size ≤100nm), with dispersion uniformity improved by more than 40% compared to traditional single dispersion methods.

[0019] Orderly arrangement regulation: By leveraging the electrostatic interaction and steric hindrance effect of the modifier molecules, the two-dimensional reinforcement sheets are guided to form a "fiber-nanosheet" interwoven structure with the one-dimensional fibers, avoiding disordered stacking of the reinforcement and maximizing the synergistic reinforcement effect.

[0020] S3 Trinity Interface Bonding Enhancement Precise formulation of interface modifiers: Silane coupling agents (one or more of KH-550, KH-560, or KH-570) are added to the resin matrix at an amount of 0.3-2% of the resin mass. The silane coupling agent has a bifunctional structure; one end forms a covalent bond with the hydroxyl groups on the surface of one-dimensional fibers and two-dimensional reinforcements, while the other end undergoes a cross-linking reaction with the resin matrix. This innovatively constructs a dual interfacial bonding network of "fiber-coupling agent-resin" and "nanosheet-coupling agent-resin," increasing the interfacial shear strength by ≥30%. This fundamentally solves the technical problem of weak interfacial bonding and significantly improves the structural stability and mechanical properties of the composite material.

[0021] S4 Dynamically Adaptive RTM Process Parameter Optimization Preferred resin matrix: Epoxy resin, unsaturated polyester resin or vinyl ester resin are selected as the matrix. The resin viscosity is controlled at 50-500 mPa·s at 25℃ to ensure good wettability and mold flowability. The curing time is set to 1-4h to achieve a degree of curing ≥95%, balancing production efficiency and curing quality of the parts.

[0022] Segmented dynamic control of filling pressure: Based on the wetting characteristics of the reinforcement-resin system and the rheological law of the filling process, a three-stage dynamic pressure control is innovatively adopted: In the initial stage of filling (2-3 / 10), the injection pressure is 0.3-0.5MPa to ensure that the resin smoothly wets the reinforcement and avoids reinforcement displacement caused by impact; in the middle stage (4-5 / 10), the pressure is increased to 0.5-0.7MPa to accelerate the filling efficiency; in the later stage (1-2 / 10), the pressure is maintained at 0.6-0.8MPa to efficiently remove residual air bubbles and pores in the mold cavity.

[0023] Temperature gradient matching and dynamic vacuum maintenance: The injection temperature is controlled at 40-80℃ and the mold temperature at 60-120℃. The resin viscosity is reduced by temperature gradient regulation to improve the wetting effect. At the same time, the vacuum maintenance technology is adopted to control the vacuum degree at -0.09~-0.098MPa and adjust it in real time according to the mold filling process to further reduce the porosity during the mold filling process, so that the porosity of the part is ≤5%, ensuring the full wetting and synergistic molding of the multidimensional reinforcement and the resin matrix.

[0024] Example 1 Reinforcement pretreatment: Glass fiber with a diameter of 10 μm was selected as one-dimensional fiber reinforcement and treated with silane coupling agent KH-550 at 100℃ for 3 h, with a surface active group grafting rate of 88%; Montmorillonite with a sheet thickness of 5 nm and a sheet diameter of 200 nm was selected as two-dimensional reinforcement and dried under vacuum at 120℃ for 6 h, with the moisture content controlled at 0.3%.

[0025] Composite system construction: The glass fiber and montmorillonite were mixed at a mass ratio of 60:3. A directional magnetic field-assisted airflow dispersion composite process was adopted (airflow velocity 10m / s, dispersion time 20min, ambient humidity 40%, directional magnetic field strength 0.1T) to achieve the oriented distribution of montmorillonite along the glass fiber axis, with an axial orientation degree of 85%.

[0026] Modification and interface control: Tributylhexylphosphonium bromide was selected as a modifier and added at 2% of the epoxy resin mass. After ultrasonic dispersion at 200W for 40 min and mechanical stirring at 1000r / min for 60 min (stirring temperature 45℃), the dispersed particle size of montmorillonite in the resin was 80nm. At the same time, 1% of the epoxy resin mass of silane coupling agent KH-560 was added and stirred evenly, and the interfacial shear strength was increased by 32%.

[0027] RTM process molding: The injection temperature is set at 60℃, the mold temperature at 80℃, and segmented pressure control is adopted (initial pressure 0.4MPa, middle pressure 0.6MPa, and later pressure 0.7MPa, with a time ratio of 3:5:2). The vacuum degree is dynamically maintained at -0.095MPa, the curing time is 2 hours, and the curing degree is 96%, thus completing the molding of the automotive body panel.

[0028] Testing revealed that the composite material exhibits a tensile strength of 368 MPa, a flexural strength of 492 MPa, an impact strength of 68 kJ / m², a Barcol hardness of 48, an oxygen index conforming to GB / 38262-2020 standards, and a resin insoluble content of 78%. Compared to traditional glass fiber reinforced composite materials, it represents a 32% weight reduction and a 31% reduction in glass fiber usage. Under conditions of -40℃ low temperature, 120℃ high temperature, 8 kGy gamma ray irradiation, and 80 kJ / m² external impact, the performance degradation rate is ≤5%, and the product qualification rate is 98.5%.

[0029] Example 2 Reinforcement pretreatment: Carbon fiber with a diameter of 15 μm was selected as the one-dimensional fiber reinforcement and treated with silane coupling agent KH-560 at 110℃ for 2.5 h, with a surface active group grafting rate of 90%; Graphene with a sheet thickness of 3 nm and a sheet diameter of 150 nm was selected as the two-dimensional reinforcement and dried under vacuum at 130℃ for 5 h, with the moisture content controlled at 0.2%.

[0030] Composite system construction: Carbon fiber and graphene were mixed at a mass ratio of 70:2, and a directional magnetic field-assisted airflow dispersion composite process was adopted (airflow velocity 12m / s, dispersion time 15min, ambient humidity 35%, directional magnetic field strength 0.15T) to achieve the orientation distribution of graphene along the carbon fiber axis, with an axial orientation degree of 87%.

[0031] Modification and interface control: Tetrabutylphosphonium bromide was selected as a modifier and added at 3% of the mass of unsaturated polyester resin. After ultrasonic dispersion at 250W for 30 min and mechanical stirring at 1200r / min for 50 min (stirring temperature 50℃), the dispersed particle size of graphene in the resin was 60nm. At the same time, 0.8% of the mass of unsaturated polyester resin silane coupling agent KH-570 was added and stirred evenly, which increased the interfacial shear strength by 35%.

[0032] RTM process molding: Set injection temperature to 70℃, mold temperature to 90℃, use segmented pressure control (initial 0.5MPa, middle 0.65MPa, later 0.75MPa, time ratio 2:5:3), dynamically maintain vacuum degree at -0.098MPa, curing time 1.5h, curing degree 97%, complete the molding of car engine hood.

[0033] Testing revealed that the composite material exhibits a tensile strength of 385 MPa, a flexural strength of 510 MPa, an impact strength of 72 kJ / m², a Barcol hardness of 52, an oxygen index conforming to GB / 38262-2020 standards, and a resin insoluble content of 76%. Compared to traditional carbon fiber reinforced composite materials, it represents a 35% weight reduction and a 33% reduction in glass fiber usage. Under conditions of -40℃ low temperature, 120℃ high temperature, 10 kGy gamma ray irradiation, and 100 kJ / m² external impact, the performance degradation rate is ≤4%, and the product qualification rate is 99%.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Any adjustments and optimizations made by those skilled in the art to material selection, process parameters, etc., without departing from the principles and innovative concepts of the present invention, should be considered within the scope of protection of the present invention.

Claims

1. A method for synergistic adaptation of multidimensional reinforced resin fibers in an RTM process, characterized in that, Includes the following steps: Construction of S1 Oriented One-Dimensional-Two-Dimensional Reinforced Composite System One-dimensional fiber reinforcement and two-dimensional sheet-like nano reinforcement are selected and mixed at a mass ratio of (50-80):(1-10). After pretreatment, a directional magnetic field-assisted airflow dispersion composite process is used to control the orientation distribution of the two-dimensional sheet-like nano reinforcement along the one-dimensional fiber axis. An array of barriers that delay the diffusion of small molecules is constructed along the fiber axis to form a "fiber-nanosheet" directional interwoven structure. Customized S2 molecular structure modifier design and reinforcement surface modification Quaternary phosphorus salt modifiers are designed, whose hydrophobic groups form intercalation interactions with the two-dimensional reinforcement sheets, and whose hydrophilic groups form hydrogen bonds or chemical bonds with the resin matrix. They are added to the resin matrix at 0.5-5% of the resin mass. The two-dimensional reinforcement is dispersed in the resin at the nanoscale using ultrasonic-mechanical dispersion technology. The orderly arrangement of the two-dimensional reinforcement sheets and one-dimensional fibers is controlled by electrostatic interaction and the steric hindrance effect of the modifier. S3 Trinity Interface Bonding Enhancement A silane coupling agent is added to the resin matrix at an amount of 0.3-2% of the resin mass. One end of the silane coupling agent forms a covalent bond with the hydroxyl groups on the surface of the one-dimensional fiber and the two-dimensional reinforcement, while the other end undergoes a cross-linking reaction with the resin matrix to construct a dual interfacial bonding network of "fiber-coupling agent-resin" and "nanosheet-coupling agent-resin". S4 Dynamically Adaptive RTM Process Parameter Optimization Based on the wetting characteristics and rheological laws of the reinforcement-resin system, a segmented molding pressure control method is adopted, combined with temperature gradient matching and dynamic vacuum maintenance technology, to complete resin transfer molding and achieve full-process synergistic adaptation between the multidimensional reinforcement and the resin matrix.

2. The collaborative adaptation method according to claim 1, characterized in that, The one-dimensional fiber reinforcement in step S1 is glass fiber or carbon fiber with a diameter of 5-20 μm; the two-dimensional layered nano-reinforcement is selected from at least one of montmorillonite, graphene, and hydrotalcite, with a layer thickness of 1-10 nm and a sheet diameter of 50-500 nm.

3. The collaborative adaptation method according to claim 1, characterized in that, The pretreatment in step S1 includes: treating the one-dimensional fiber reinforcement with silane coupling agent KH-550 or KH-560 at 80-120℃ for 2-4 hours, with a surface active group grafting rate ≥85%; and drying the two-dimensional lamellar nano-reinforcement under vacuum at 100-150℃ for 4-8 hours, with the moisture content controlled below 0.5%.

4. The collaborative adaptation method according to claim 1, characterized in that, The process parameters for the directional magnetic field-assisted airflow dispersion composite process in step S1 are as follows: airflow velocity 5-15 m / s, dispersion time 10-30 min, ambient humidity 30-50%, directional magnetic field strength 0.05-0.2 T, magnetic field direction consistent with the one-dimensional fiber axis, and axial orientation of the two-dimensional reinforcement ≥80%.

5. The collaborative adaptation method according to claim 1, characterized in that, The quaternary phosphonium salt modifier mentioned in step S2 is tributylhexylphosphonium bromide or tetrabutylphosphonium bromide, and the mass ratio of the modifier to the two-dimensional lamellar nano-reinforcement is (0.2-1):1; the ultrasonic dispersion power is 100-300W, the ultrasonic time is 20-60min; the mechanical stirring speed is 500-1500r / min, the stirring time is 30-90min, the stirring temperature is 30-60℃, and the dispersed particle size of the two-dimensional reinforcement in the resin is ≤100nm.

6. The collaborative adaptation method according to claim 1, characterized in that, The silane coupling agent mentioned in step S3 is one or more of KH-550, KH-560 or KH-570, and the mixing ratio is arbitrary, with an interfacial shear strength increase of ≥30%.

7. The collaborative adaptation method according to claim 1, characterized in that, The segmented mold filling pressure control in step S4 is as follows: the injection pressure is 0.3-0.5MPa in the initial stage of mold filling (accounting for 2-3 / 10), the pressure is increased to 0.5-0.7MPa in the middle stage of mold filling (accounting for 4-5 / 10), and the pressure is maintained at 0.6-0.8MPa in the later stage of mold filling (accounting for 1-2 / 10); the injection temperature is 40-80℃, the mold temperature is 60-120℃, the vacuum degree is dynamically maintained at -0.09~-0.098MPa, and the porosity of the part is ≤5%.

8. The collaborative adaptation method according to claim 1, characterized in that, The resin matrix is ​​one of epoxy resin, unsaturated polyester resin or vinyl ester resin, the resin viscosity at 25°C is 50-500 mPa·s, the curing time is 1-4 h, and the degree of curing is ≥95%.

9. A multidimensional reinforced composite material prepared by any one of the methods described in claims 1-8, characterized in that, The composite material has a tensile strength ≥350MPa, flexural strength ≥480MPa, impact strength ≥65kJ / m², Barcol hardness ≥45, oxygen index conforming to GB / 38262-2020 standard, and resin insoluble content ≤82%. Compared with traditional single fiber reinforced composite materials, it reduces weight by more than 30% and glass fiber usage by 30%. It can withstand harsh working conditions such as a temperature range of -40~120℃, gamma ray irradiation dose ≤10kGy, and external impact of 100kJ / m².