Efficient dispersion process of resin and polymer in wet mixing process

Abstract

The invention relates to an efficient dispersion process of resin and a polymer in a wet mixing process, and aims to solve the problems of non-uniform dispersion of the resin and the polymer, low energy efficiency, serious environmental pollution and the like in the prior art. According to the process, a specific surfactant and a solvent are added in the mixing process, and an ultrasonic dispersion technology, low-temperature stirring control and an intelligent temperature control system are combined, so that efficient and uniform dispersion of the resin and the polymer can be realized. The preparation method comprises the following specific steps: mixing resin and a polymer according to a certain proportion, adding a surfactant and deionized water, and carrying out preliminary mixing; ultrasonic dispersion equipment is started for efficient dispersion; the temperature and the stirring speed are controlled to ensure the stability of the dispersion process; and finally, removing excessive moisture through vacuum drying to obtain the uniformly dispersed composite material. The preparation method has remarkable innovativeness and creativity, can effectively improve the dispersion effect of the resin and the polymer, reduces energy consumption and environmental pollution, and has relatively high production efficiency and economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of wet mixing, in particular to a high-efficiency dispersion process of resin and polymer in a wet mixing process. Background Art

[0002] The mixing process of resin and polymer is widely used in material manufacturing, especially in the production of high-performance composite materials, plastics, coatings and other fields. The key to the mixing process is the good dispersion of resin and polymer. Only the uniform dispersion of resin and polymer can ensure the stability, mechanical properties and durability of the final product. However, the existing wet mixing technology still faces some technical bottlenecks, which are mainly reflected in the following aspects:

[0003] In the traditional wet mixing process, there is often a large difference in particle size between the resin and the polymer, resulting in uneven dispersion, which leads to unstable performance of the final product. Insufficient dispersion may affect the mechanical properties, thermal properties and chemical stability of the material. In the prior art, high-temperature melting or strong stirring is often used for dispersion, but these methods often take a long time to achieve the ideal dispersion effect, and have high energy consumption and low efficiency. In the wet mixing process, improper temperature control will lead to overheating or underheating of the resin and polymer, affecting the mixing effect of the materials. Large temperature fluctuations may lead to material degradation or inconsistent performance. During the mixing process, the generation and residue of bubbles will have an adverse effect on the dispersion effect of the resin and polymer. Bubbles will affect the appearance and physical properties of the final product, especially in the production of transparent materials. The bubble problem is particularly prominent. Harmful solvents or high-temperature heating processes may be used in the traditional wet mixing process. These practices not only increase the safety risks of the production process, but also have certain negative impacts on the environment.

[0004] Therefore, the existing technology still has deficiencies in the efficient dispersion of resins and polymers, and a new method is urgently needed to overcome the above problems, improve dispersion efficiency and product quality, reduce production costs, and ensure environmental friendliness and safety. Summary of the invention

[0005] The purpose of the present invention is to provide an efficient dispersion process for resin and polymer during wet mixing, which can significantly improve the dispersibility of resin and polymer, reduce the problem of uneven particle size distribution, and improve product performance and production efficiency by introducing a specific dispersant, accurately controlling the temperature and using vacuum degassing treatment. Specific objectives include:

[0006] Improve the dispersion effect of resin and polymer to ensure uniform distribution of particles;

[0007] Control the particle size between 0.1μm and 0.5μm to ensure stable product performance;

[0008] Achieve low moisture content to avoid the impact of moisture on resins and polymers;

[0009] Improve mixing efficiency and reduce processing time. Summary of the invention

[0011] To achieve the above objectives, the present invention provides the following technical solutions:

[0012] Efficient dispersion process of resin and polymer: The process includes the following steps:

[0013] Step (1): mixing the resin and the polymer in a set ratio to obtain a preliminary mixture;

[0014] Step (2): adding a dispersant to the preliminary mixture, wherein the dispersant is a chemical substance having hydrophilic and lipophilic functional groups with specific structures, and the amount of the dispersant added is 0.5% to 5% of the total mass of the resin and the polymer;

[0015] Step (3): Ensure uniform dispersion of the resin and the polymer by high-speed stirring and appropriate temperature control, the temperature is controlled between 25°C and 30°C, and the stirring speed is 1000 rpm to 5000 rpm;

[0016] Step (4): after the mixture reaches the specified dispersion effect, vacuum degassing is performed to ensure that the bubble content in the mixture is less than 1%;

[0017] Step (5): Finally, a cooling device is used to cool the dispersed resin polymer mixture to obtain a final uniformly dispersed product.

[0018] Dispersant: The dispersant used in the present invention is a composite dispersant composed of polyvinyl alcohol (PVA) and a stearate compound, wherein the molecular structure of the composite dispersant contains a hydrophilic hydroxyl group and a lipophilic fatty acid group. This composite dispersant can effectively improve the dispersibility of the resin and the polymer, and avoid product quality problems caused by uneven dispersion.

[0019] Types of resins and polymers: The process of the present invention is applicable to the mixing of various resins and polymers, including but not limited to combinations of common resins and polymers such as epoxy resin and polystyrene, polypropylene and polyethylene, polystyrene and polyacrylic resin, epoxy resin and polyester.

[0020] Temperature control and stirring conditions: During the mixing process, the temperature is controlled between 25℃ and 30℃ to ensure that the resin and polymer are mixed within the optimal temperature range to avoid overheating and affect the performance of the material. The high-speed stirring setting range is 1000rpm to 5000rpm to ensure that the resin and polymer are fully mixed.

[0021] Vacuum degassing treatment: After the dispersion is completed, vacuum degassing treatment is used to remove bubbles by placing the mixture in a vacuum environment to ensure that the bubble content in the mixture is less than 1%. The vacuum pressure is -0.08MPa to -0.1MPa, and the degassing time is 20 minutes to 30 minutes.

[0022] Cooling device: Finally, a cooling device is used to cool the dispersed resin and polymer mixture. The cooling temperature is controlled between 25°C and 30°C to ensure that the product does not aggregate particles or degrade in performance during the cooling process.

[0023] The wet mixing process of the present invention can effectively improve the dispersion effect of resins and polymers, ensure that the final product has a relatively uniform particle distribution and excellent mechanical properties, and can maintain high efficiency and stability during the production process, and is suitable for the industrial production of various resins and polymers.

[0024] Beneficial effects of the present invention:

[0025] It effectively promotes the uniform dispersion of resins and polymers, avoids particle aggregation, ensures uniform dispersion, controls the particle size between 0.1μm and 0.5μm, uniformly distributes particles, improves the quality of finished products, shortens the dispersion time and improves production efficiency by precisely controlling the temperature and stirring speed. The vacuum degassing treatment removes bubbles and moisture in the mixture to ensure the stability and performance of the product. It is suitable for the mixing of a variety of resins and polymers and has strong process versatility.

[0026] This process not only improves product quality, but also increases production efficiency and reduces energy consumption, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the process flow of the wet mixing process according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a dispersant adding and mixing device according to an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of temperature and stirring speed control in wet mixing according to an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of vacuum degassing equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0033] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0034] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0035] The following describes in detail the efficient dispersion process of resin and polymer in the wet mixing process of the present invention, and the specific implementation method includes material preparation, equipment configuration, process steps and optimization control thereof. This implementation method solves the problems of uneven dispersion, high energy consumption, and environmental pollution in the prior art through innovative technical means, and has significant advantages.

[0036] See also Figures 1 to 4

[0037] 1. Material Preparation

[0038] The materials used in this embodiment include:

[0039] Resin: Epoxy resin and polypropylene resin are used to ensure good dispersion and compatibility. According to product requirements, the mass of resin is 60% of the total ingredients.

[0040] Polymer: Polystyrene and polyethylene are used, which have good compatibility with the resin. The mass of polymer accounts for 30% of the total ingredients.

[0041] Surfactant: Polyvinyl alcohol (PVA) and sodium dodecylbenzene sulfonate (SDBS) are used, which have strong dispersing ability. The total amount of surfactant added is 2% of the mass of the resin and polymer mixture.

[0042] Solvent: Deionized water was used as the dispersion medium, and the mass of water accounted for 8% of the total ingredients.

[0043] 2. Equipment configuration

[0044] The equipment configuration used in this implementation is as follows:

[0045] Ultrasonic dispersion equipment: Use an ultrasonic generator and ultrasonic probe with a power of 500W and a frequency of 20kHz. The ultrasonic probe is 15cm long and 2cm in diameter, which can penetrate deep into the mixing tank to produce sufficient cavitation effect.

[0046] Low temperature mixing system: Use a mixing tank with temperature control function, with a temperature control accuracy of ±0.5°C. The temperature control system includes a temperature sensor and a heating / cooling device, which can maintain the temperature between 25°C and 30°C during the mixing process.

[0047] Intelligent control system: The system can monitor ultrasonic frequency, stirring speed, temperature and mixing time in real time, and automatically adjust process parameters through feedback mechanism to ensure the best effect of dispersion process.

[0048] 3. Wet mixing process

[0049] This process mainly includes the following steps:

[0050] 3.1 Batching and premixing

[0051] Ratio of resin to polymer: Weigh the resin and polymer in a mass ratio of 6:3 and put them into a pre-mixing tank.

[0052] Add surfactant and solvent: Add polyvinyl alcohol (PVA) and sodium dodecylbenzene sulfonate (SDBS) to the mixture, the amount of surfactant added is 2% of the mass of resin and polymer. Then add deionized water to ensure that 8% of the total ingredients are water.

[0053] Initial mixing: Start the stirring equipment and mix at a speed of 300 rpm to ensure that the resin, polymer, surfactant and solvent are evenly mixed.

[0054] 3.2 Ultrasonic dispersion

[0055] Start the ultrasonic dispersion device: Place the mixture in the ultrasonic dispersion tank, start the ultrasonic generator, set the frequency to 20kHz, and the power to 500W. The ultrasonic probe should be completely immersed in the mixture to stimulate the cavitation effect.

[0056] Dispersion process: The ultrasonic probe creates a local high temperature and high pressure environment through high-frequency vibration and cavitation effect, breaking up the aggregates of resin and polymer particles and promoting dispersion. The dispersion time is 20 minutes.

[0057] Dispersion effect monitoring: The particle size is detected in real time by a particle size distribution instrument to ensure that the particle size is between 0.1μm and 0.5μm.

[0058] 3.3 Low temperature wet mixing

[0059] Temperature control system start-up: Before and during the ultrasonic dispersion process, the temperature control system maintains the mixing temperature between 25°C and 30°C to avoid excessive temperature that may cause resin degradation or excessive polymer viscosity.

[0060] Continuous mixing: During ultrasonic dispersion, the stirring speed is maintained at 300rpm to ensure that the resin and polymer are evenly mixed under low temperature conditions and to prevent overheating from causing poor dispersion effect.

[0061] Intelligent control system adjustment: Based on real-time feedback of particle size data and temperature monitoring, the intelligent control system will automatically adjust the ultrasonic frequency, power and stirring speed to ensure that each dispersion process achieves the best effect.

[0062] 3.4 Dispersion effect inspection and post-processing

[0063] Particle size analysis: After dispersion is complete, samples are taken for particle size distribution analysis to ensure that the particle size of the final mixture is between 0.1μm and 0.5μm and that the resin and polymer are evenly distributed.

[0064] Post-treatment: Dehydrate the dispersed mixture and use a vacuum dryer to remove excess water or solvent to ensure that the final product has stable physical properties.

[0065] 4. Intelligent distributed control system

[0066] One of the core innovations of this implementation is an intelligent distributed control system. The working principle of the system is as follows:

[0067] Real-time data monitoring: sensors monitor key process parameters such as ultrasonic frequency, stirring speed, temperature and particle size distribution.

[0068] Automatic adjustment: Based on real-time feedback data, the intelligent control system automatically adjusts the ultrasonic frequency and power, stirring speed, and temperature to ensure that the dispersion effect of resin and polymer is always in the best state.

[0069] Optimize the dispersion process: The system intelligently selects the best process parameters according to the characteristics of different resins and polymers, achieves high adaptability, and avoids errors caused by manual operation.

[0070] 5. Process optimization and energy-saving design

[0071] Ultrasonic frequency and power optimization: According to the dispersion difficulty of resins and polymers, adjust the frequency and power of the ultrasonic generator to maximize the cavitation effect and reduce unnecessary energy consumption.

[0072] Temperature control system: Precisely control the temperature during the mixing process, maintain a low temperature environment, reduce the degradation of resins and polymers, and ensure the dispersion effect.

[0073] Energy efficiency monitoring: The energy consumption monitoring module can be used to track the energy consumption of the entire process in real time, and by optimizing the control system, energy waste can be reduced and overall energy efficiency can be improved.

[0074] 6. Implementation Effect

[0075] Through the above implementation, the dispersion effect of resin and polymer in the wet mixing process is significantly improved, and the uniformity and stability of particles can be ensured. The intelligent control system makes the whole process more precise and automated, significantly reduces the complexity of manual operation, and improves production efficiency and product consistency. The combination of low-temperature operation and efficient dispersion technology allows energy consumption in the dispersion process to be controlled and environmental pollution to be greatly reduced.

[0076] The high-efficiency dispersion process of resin and polymer in the wet mixing process of the present invention overcomes the problems of uneven dispersion, high energy consumption, environmental pollution, etc. in the prior art by combining ultrasonic dispersion, polymer surfactant, low-temperature mixing technology and intelligent control system. The process not only has the advantages of high efficiency, energy saving and environmental protection, but also can adapt to the dispersion requirements of different resins and polymers, is widely applicable to the production process of high-performance composite materials, and has significant industrial application value.

[0077] Example 1: Wet mixing and dispersion of epoxy resin and polystyrene

[0078] Materials and equipment:

[0079] Resin: 60% epoxy resin, 30% polystyrene;

[0080] Surfactant: polyvinyl alcohol (PVA) 2%, sodium dodecylbenzene sulfonate (SDBS) 0.5%;

[0081] Solvent: deionized water 8%;

[0082] Equipment: 500W ultrasonic dispersion equipment, 20kHz frequency; low temperature stirring tank; intelligent control system.

[0083] step:

[0084] Place epoxy resin and polystyrene in a mixing tank according to the ratio of resin to polymer.

[0085] Add polyvinyl alcohol and sodium dodecylbenzene sulfonate to the mixture, add deionized water and ensure that the proportion of water is 8% of the total ingredients.

[0086] Start the stirring system at 300 rpm for preliminary mixing.

[0087] Start the ultrasonic dispersion device, place the ultrasonic probe in the mixture, set the power to 500 W and the frequency to 20 kHz, and perform dispersion for 20 minutes.

[0088] The temperature control system is controlled to maintain the temperature between 25°C and 30°C to ensure the stable dispersion of resin and polymer.

[0089] After dispersion is completed, a particle size analysis is performed to ensure that the particle size of the dispersed particles is 0.1 μm to 0.5 μm.

[0090] The excess water is removed by vacuum drying to obtain a uniform composite material of epoxy resin and polystyrene.

[0091] Through this embodiment, the epoxy resin and polystyrene have good dispersion effect, the particles are uniform, the dispersion uniformity reaches the expected level, and the energy efficiency is high and the environmental pollution is low in the whole process.

[0092] Example 2: Wet mixing and dispersion of polypropylene resin and polyethylene

[0093] Materials and equipment:

[0094] Resin: polypropylene resin 60%, polyethylene resin 30%;

[0095] Surfactant: polyvinyl alcohol (PVA) 2%, sodium dodecylbenzene sulfonate (SDBS) 0.5%;

[0096] Solvent: deionized water 8%;

[0097] Equipment: 500W ultrasonic dispersion equipment, 20kHz frequency; low temperature stirring tank; intelligent control system.

[0098] step:

[0099] Weigh polypropylene resin and polyethylene resin in a mass ratio of 6:3 and add them into a mixing tank.

[0100] Polyvinyl alcohol and sodium dodecylbenzene sulfonate were added as surfactants, and 8% deionized water was added.

[0101] Start the stirring device and perform preliminary mixing at a speed of 300 rpm.

[0102] Start the ultrasonic dispersion equipment, immerse the ultrasonic probe into the mixture, with a power of 500 W and a frequency of 20 kHz, and perform dispersion for 20 minutes.

[0103] A temperature control system is used to ensure that the mixing temperature is maintained between 25°C and 30°C to avoid overheating.

[0104] Perform particle size analysis to ensure that the resin and polymer particles in the mixture are uniform and have a particle size of 0.1 μm to 0.5 μm.

[0105] The water is removed by vacuum drying equipment to obtain a uniformly dispersed composite material of polypropylene and polyethylene.

[0106] In this embodiment, wet mixing and ultrasonic dispersion are used to make the mixture of polypropylene resin and polyethylene have good uniformity, the dispersed particle size meets the target requirement, and the energy efficiency is high, which is suitable for large-scale production.

[0107] Example 3: Wet mixing and dispersion of polystyrene and polyacrylic acid resin

[0108] Materials and equipment:

[0109] Resin: polystyrene 60%, polyacrylic resin 30%;

[0110] Surfactant: polyvinyl alcohol (PVA) 2%, sodium dodecylbenzene sulfonate (SDBS) 0.5%;

[0111] Solvent: deionized water 8%;

[0112] Equipment: 500W ultrasonic dispersion equipment, 20kHz frequency; low temperature stirring tank; intelligent control system.

[0113] step:

[0114] Add polystyrene and polyacrylic acid resin into the mixing tank according to the ratio, ensuring that the total mass ratio is 60%:30%.

[0115] Polyvinyl alcohol and sodium dodecylbenzene sulfonate (SDBS) were added as surfactants to ensure that 2% of the total mass was surfactant.

[0116] Add deionized water to ensure that the water ratio is 8%.

[0117] Start the stirring system and perform preliminary mixing at a speed of 300 rpm.

[0118] Start the ultrasonic dispersion equipment, set the ultrasonic power to 500 W and the frequency to 20 kHz, and perform dispersion for 20 minutes.

[0119] The temperature control system maintains the mixing temperature between 25°C and 30°C to prevent high temperature from affecting the stability of resin and polymer.

[0120] Perform particle size distribution analysis to ensure that the final particle size is between 0.1 μm and 0.5 μm.

[0121] The water is removed by vacuum drying to obtain a uniformly dispersed composite material of polystyrene and polyacrylic acid resin.

[0122] Through this embodiment, the dispersion effect of polystyrene and polyacrylic acid resin is effectively improved, the dispersion uniformity reaches the expected level, and the energy consumption is low and the production process is environmentally friendly.

[0123] Example 4: Wet mixing and dispersion of epoxy resin and polyester

[0124] Materials and equipment:

[0125] Resin: 60% epoxy resin, 30% polyester resin;

[0126] Surfactant: polyvinyl alcohol (PVA) 2%, sodium dodecylbenzene sulfonate (SDBS) 0.5%;

[0127] Solvent: deionized water 8%;

[0128] Equipment: 500W ultrasonic dispersion equipment, 20kHz frequency; low temperature stirring tank; intelligent control system.

[0129] step:

[0130] Add epoxy resin and polyester resin into the mixing tank in a ratio of 6:3.

[0131] Polyvinyl alcohol and sodium dodecylbenzene sulfonate were added to the mixture as surfactants, and 8% deionized water was added.

[0132] Start the stirring system and perform preliminary mixing at 300 rpm to ensure that the resin and polymer are fully in contact.

[0133] Start the ultrasonic dispersion equipment with a power of 500 W and a frequency of 20 kHz, and perform ultrasonic dispersion for 20 minutes.

[0134] A temperature control system is used to maintain the temperature between 25°C and 30°C to ensure that the dispersion process is not affected by high temperature.

[0135] Perform particle size analysis to ensure that the particle size is 0.1μm to 0.5μm, meeting the dispersion requirements.

[0136] The dispersed materials are vacuum dried to remove excess water, thereby obtaining a composite material of epoxy resin and polyester resin with high uniformity.

[0137] This embodiment successfully disperses epoxy resin and polyester resin uniformly through wet mixing and ultrasonic dispersion technology, the particles are uniform and stable, and the whole process is energy efficient, which is suitable for the production of high-performance composite materials.

[0138] The above embodiments fully demonstrate the effects of ultrasonic dispersion technology, surfactants and low-temperature stirring control through wet mixing processes of different resin and polymer combinations. Each embodiment can achieve efficient dispersion of resin and polymer, the uniformity of dispersed particles reaches the expected level, and has high energy efficiency and environmental protection, which is suitable for large-scale production.

[0139] Table 1 of the test data of the above embodiments:

[0140]

[0141] The testing standards for the above table are as follows:

[0142] Particle size distribution:

[0143] Standard number: ISO13320:2009 (Laser diffraction method for particle size distribution)

[0144] Standard requirements: particle size distribution should be between 0.1μm and 0.5μm, and the uniformity of particle size should be greater than 90%.

[0145] Dispersibility:

[0146] Standard number: ASTMD5241-17 (dispersion determination)

[0147] Standard requirement: Dispersion uniformity (CV value) should be less than 5%.

[0148] Temperature Control:

[0149] Standard number: ISO11357-1:2016 (Differential Scanning Calorimetry of Plastics)

[0150] Standard requirements: Temperature control should be between 25°C and 30°C to avoid overheating which will have a negative impact on resin and polymer dispersion.

[0151] Moisture content after vacuum drying:

[0152] Standard number: ISO15512-1:2004 (Determination of dryness of plastics)

[0153] Standard requirement: The moisture content should be less than 1%.

[0154] Mechanical properties test (tensile strength, toughness):

[0155] Standard number: ISO527-2:2012 (Determination of tensile properties of plastics)

[0156] Standard requirements: tensile strength should be greater than 25MPa, toughness requirement should be no less than 8KJ / m 2 .

[0157] Comparison and analysis of the above embodiments

[0158] Particle size distribution:

[0159] Best: The particle sizes of Example 1 (epoxy resin and polystyrene) and Example 3 (polystyrene and polyacrylic resin) are relatively uniform and distributed relatively concentratedly within the specified range of 0.1 μm to 0.5 μm.

[0160] Poor: Example 2 (polypropylene and polyethylene) has a slightly larger particle size distribution range, slightly deviating from the ideal range, but still meets the requirements.

[0161] Particle uniformity (CV value):

[0162] Best: Example 3 (polystyrene and polyacrylic acid resin) has the lowest dispersion uniformity (CV value), indicating that it has the best dispersibility.

[0163] Poor: The dispersion uniformity of Example 2 (polypropylene and polyethylene) is slightly poor, and the CV value is relatively high.

[0164] Temperature Control:

[0165] The temperature of all examples was controlled between 25°C and 30°C, which met the standard requirements and thus had no significant difference.

[0166] Moisture Content:

[0167] Best: Example 4 (epoxy resin and polyester) has the lowest moisture content, meets the standard requirements, and is suitable for subsequent processing.

[0168] Poor: Example 2 (polypropylene and polyethylene) has a slightly higher moisture content, but still meets the standard requirements.

[0169] Mechanical properties:

[0170] Best: Example 4 (epoxy resin and polyester) has the highest tensile strength and toughness, showing its excellent physical properties and is suitable for application scenarios with higher requirements.

[0171] Poor: The tensile strength and toughness of Example 2 (polypropylene and polyethylene) are slightly lower, but still meet the basic requirements.

[0172] According to various test results, Example 4 (epoxy resin and polyester) performed relatively well in multiple dimensions (particle size distribution, dispersion uniformity, tensile strength, toughness and moisture content), especially in terms of mechanical properties and moisture content, and is therefore the best example.

[0173] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0174] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A highly efficient dispersion process of resin and polymer during wet mixing, characterized in that: The process comprises the following steps: S1, mixing the resin and the polymer according to a set ratio to obtain a preliminary mixture; S2. Adding a dispersant to the preliminary mixture, wherein the dispersant is a chemical substance having hydrophilic and lipophilic functional groups with specific structures, and the amount of the dispersant added is 0.5% to 5% of the total mass of the resin and the polymer; S3. Ensure uniform dispersion of resin and polymer through high-speed stirring and appropriate temperature control. The temperature is controlled between 25°C and 30°C, and the stirring speed is 1000rpm to 5000rpm. S4. After the mixture reaches the specified dispersion effect, vacuum degassing is performed to ensure that the bubble content in the mixture is less than 1%; S5. Finally, a cooling device is used to cool the dispersed resin polymer mixture to obtain a final uniformly dispersed product.

2. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The dispersant is a composite dispersant composed of polyvinyl alcohol (PVA) and a stearate compound, and the molecular structure of the composite dispersant has a hydrophilic hydroxyl group and a lipophilic fatty acid group.

3. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The resin is epoxy resin, and the polymer is polystyrene.

4. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The resin is polystyrene, and the polymer is polypropylene.

5. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The dispersion process is carried out using a twin-screw extruder, the screw speed is 200 rpm to 400 rpm, and the processing temperature is 180° C. to 220° C.

6. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The working pressure of the vacuum degassing equipment used in step (4) is -0.08MPa to -0.1MPa, and the degassing time is 20 minutes to 30 minutes.

7. The efficient dispersion process of resin and polymer in wet mixing process according to claim 1, wherein: The dispersed resin and polymer mixture has a particle size distribution between 0.1 μm and 0.5 μm, and a particle uniformity (CV value) of less than 5%.

8. The process for efficiently dispersing resin and polymer in a wet mixing process according to claim 1, wherein: The final mixture of the resin and the polymer has a tensile strength greater than 25 MPa and a toughness greater than 8 KJ / m 2 , moisture content is less than 1%.

9. The process for efficiently dispersing resin and polymer in a wet mixing process according to claim 1, wherein: The stirring speed in step (3) is 2000 rpm for 40 minutes.

10. The process for efficiently dispersing resin and polymer in a wet mixing process according to claim 1, wherein: The mixture of the resin and the polymer is cooled by a vacuum cooling device, and the cooling temperature is controlled between 25°C and 30°C.

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