Quantitative method for evaluating emulsification effect

Abstract

The invention discloses a quantitative method for evaluating an emulsification effect, which comprises the following steps: S1, weighing an oil phase, a water phase and a surfactant in a reactor, primarily stirring, and uniformly dispersing to form an emulsion; s2, taking part of the emulsion, and carrying out particle size distribution measurement to obtain an average particle size and a particle size distribution coefficient; performing layering time testing to obtain layering time; performing a centrifugal stability test to obtain centrifugal stability parameters; performing an interfacial tension test to obtain an interfacial tension; carrying out a viscosity test to obtain the emulsion viscosity; carrying out transmissivity testing to obtain the transmissivity of the emulsion; carrying out microscopic observation test to obtain molecular concentration parameters; s3, evaluating the emulsification effect according to the average particle size, the particle size distribution coefficient, the layering time, the centrifugal stability parameter, the interfacial tension, the viscosity, the transmissivity or the molecular concentration parameter. According to the quantitative method for evaluating the emulsification effect, the problem that the emulsification effect cannot be comprehensively and comprehensively evaluated in the prior art is solved.

Description

Technical Field

[0001] This invention belongs to the field of emulsification system evaluation technology, specifically relating to a quantitative method for evaluating emulsification effects. Background Technology

[0002] Emulsions are widely used in various fields such as chemical industry, pharmaceuticals, food, and oil extraction. The stability and particle size distribution of emulsions directly affect their performance. For example, in oil extraction, emulsifiers are often used in emulsion flooding technology to enhance oil recovery, and the evaluation of stability and emulsification effect is crucial. However, current evaluations of emulsification effect mostly rely on simple qualitative methods such as stratified observation and particle size distribution measurement, lacking comprehensive quantitative evaluation methods. Therefore, it is necessary to provide a highly operable and accurate method for evaluating emulsification effect to achieve quantitative analysis of emulsion performance. Summary of the Invention

[0003] The purpose of this invention is to provide a quantitative method for evaluating emulsification effects, which solves the problem that existing technologies cannot comprehensively and fully evaluate emulsification effects.

[0004] The technical solution adopted in this invention is a quantitative method for evaluating emulsification effect, comprising the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

[0005] The invention is further characterized by: The mass percentages of oil phase, aqueous phase, and surfactant in S1 are: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%.

[0006] In S1, deionized water or distilled water can be used as the aqueous phase.

[0007] The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant.

[0008] The high-speed shearing machine has a rotation speed of 5000~20000 r / min and a shearing time of 5~15min.

[0009] The power of the ultrasonic emulsification equipment is 100~500 W, and the operation time is 1~5 min.

[0010] The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 15 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements and averaging the results; the specific process for transmittance testing in S2 is as follows: a uniform emulsion sample is injected into a cuvette, then placed in the sample cell of the spectrophotometer, a wavelength of 400~800 nm is set, and multiple measurements are taken to obtain the emulsion transmittance by averaging the results; the specific process for microscopic observation testing in S2 is as follows: the particle morphology of the emulsion is directly observed using an optical microscope or an electron microscope to obtain intuitive images of the size, shape and distribution of the emulsion particles, and to obtain the concentrated parameters of the emulsion molecules.

[0011] The specific process for S3 is as follows: An average particle size of less than 300 nm and a particle size distribution coefficient of less than 0.2 indicate uniform emulsion dispersion and good emulsification; a stratification time greater than 72 h or no obvious stratification after standing for more than 72 h indicates good emulsion stability and good emulsification; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 15 min indicate high anti-stratification ability and good emulsification; an interfacial tension of less than 2~3 mN / m indicates a stable adsorption layer and good emulsification; an emulsion viscosity greater than 100 mPa·s indicates stable emulsion structure and good emulsification; an emulsion transmittance of less than 30% indicates good emulsion dispersibility and good emulsification; and an emulsion molecular concentration parameter within ±20% indicates good emulsion stability and good emulsification.

[0012] The beneficial effects of this invention are: This invention provides a quantitative method for evaluating emulsification effects. This method combines multiple parameters, including particle size distribution, stratification time, centrifugal stability, interfacial tension, viscosity, transmittance, and tube graphs, to comprehensively and accurately evaluate emulsification effects. This method can be used for the screening and optimization of emulsifiers and has broad application prospects in various fields such as chemical, food, and pharmaceutical industries. Detailed Implementation

[0013] The present invention will now be described in detail with reference to specific embodiments.

[0014] The present invention provides a quantitative method for evaluating emulsification effects, comprising the following steps: Example 1 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

[0015] Example 2 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are as follows: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

[0016] Example 3 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are as follows: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 5000~20000 r / min and a shearing time of 5~15min; The power of the ultrasonic emulsification equipment is 100~500W, and the operation time of the ultrasonic emulsification equipment is 1~5min; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

[0017] Example 4 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are as follows: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 5000~20000 r / min and a shearing time of 5~15min; The power of the ultrasonic emulsification equipment is 100~500W, and the operation time of the ultrasonic emulsification equipment is 1~5min; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 15 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements, and averaging the results. The transmittance test in S2 involves injecting a uniform emulsion sample into a cuvette, placing it in the sample cell of a spectrophotometer, setting the wavelength to 400-800 nm, taking multiple measurements, and averaging the results. The microscopic observation test in S2 involves directly observing the particle morphology of the emulsion using an optical microscope or electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, thus obtaining the concentrated parameters of the emulsion molecules. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

[0018] Example 5 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are as follows: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 5000~20000 r / min and a shearing time of 5~15min; The power of the ultrasonic emulsification equipment is 100~500W, and the operation time of the ultrasonic emulsification equipment is 1~5min; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 15 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements, and averaging the results. The transmittance test in S2 involves injecting a uniform emulsion sample into a cuvette, placing it in the sample cell of a spectrophotometer, setting the wavelength to 400-800 nm, taking multiple measurements, and averaging the results. The microscopic observation test in S2 involves directly observing the particle morphology of the emulsion using an optical microscope or electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, thus obtaining the concentrated parameters of the emulsion molecules. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance or molecular concentration parameters. The specific process is as follows: an average particle size of less than 300 nm and a particle size distribution coefficient of less than 0.2 indicate that the emulsion is uniformly dispersed and has a good emulsification effect; a stratification time of more than 72 h or no obvious stratification after standing for more than 72 h indicates that the emulsion has good stability and a good emulsification effect; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 15 min indicates that the emulsion has high anti-stratification ability and a good emulsification effect; an interfacial tension of less than 2~3 mN / m indicates that the emulsion has a stable adsorption layer and a good emulsification effect; an emulsion viscosity of more than 100 mPa·s indicates that the emulsion structure is stable and has a good emulsification effect; an emulsion transmittance of less than 30% indicates that the emulsion has good dispersibility and a good emulsification effect; and an emulsion molecular concentration parameter within ±20% indicates that the emulsion has good stability and a good emulsification effect.

[0019] Example 6 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are: oil phase 15%, aqueous phase 80%, surfactant 5%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 5000 r / min and a shearing time of 5 min. The ultrasonic emulsification equipment has a power of 100W and an operating time of 1 minute. S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 10 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements, and averaging the results. The transmittance test in S2 involves injecting a uniform emulsion sample into a cuvette, placing it in the sample cell of a spectrophotometer, setting the wavelength to 400-800 nm, taking multiple measurements, and averaging the results. The microscopic observation test in S2 involves directly observing the particle morphology of the emulsion using an optical microscope or electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, thus obtaining the concentrated parameters of the emulsion molecules. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance or molecular concentration parameters. The specific process is as follows: an average particle size of 290 mm and a particle size distribution coefficient of 0.15 indicate uniform emulsion dispersion and good emulsification effect; no obvious stratification after standing for more than 24 hours indicates good emulsion stability and good emulsification effect; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 10 minutes indicate high anti-stratification ability and good emulsification effect; an interfacial tension of 2.5 mN / m measured by the spin-drop method indicates a stable adsorption layer and good emulsification effect; an emulsion viscosity of 110 mPa·s indicates stable emulsion structure and good emulsification effect; an emulsion transmittance of 28% indicates good dispersibility and good emulsification effect; and a molecular concentration parameter within 10% indicates good emulsion stability and good emulsification effect. These comprehensive results indicate that the emulsion has good emulsification effect and long-term stability, making it suitable for long-term storage and dispersion requirements in practical applications.

[0020] Example 7 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are: oil phase 30%, aqueous phase 67%, surfactant 3%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 10,000 r / min and a shearing time of 10 min. The ultrasonic emulsification equipment has a power of 300W and an operating time of 3 minutes. S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 10 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements, and averaging the results. The transmittance test in S2 involves injecting a uniform emulsion sample into a cuvette, placing it in the sample cell of a spectrophotometer, setting the wavelength to 400-800 nm, taking multiple measurements, and averaging the results. The microscopic observation test in S2 involves directly observing the particle morphology of the emulsion using an optical microscope or electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, thus obtaining the concentrated parameters of the emulsion molecules. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance or molecular concentration parameters. The specific process is as follows: an average particle size of 250 nm and a particle size distribution coefficient of 0.14 indicate uniform emulsion dispersion and good emulsification effect; no obvious stratification after standing for more than 24 hours indicates good emulsion stability and good emulsification effect; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 10 minutes indicate high anti-stratification ability and good emulsification effect; an interfacial tension of 2.6 mN / m measured by the spin-drop method indicates a stable adsorption layer and good emulsification effect; an emulsion viscosity of 130 mPa·s indicates stable emulsion structure and good emulsification effect; an emulsion transmittance of 25% indicates good dispersibility and good emulsification effect; and a molecular concentration parameter within 5% indicates good emulsion stability and good emulsification effect. These comprehensive results indicate that the emulsion has good emulsification effect and long-term stability, making it suitable for long-term storage and dispersion requirements in practical applications.

[0021] Example 8 The quantitative method for evaluating emulsification effect proposed in this embodiment includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; The mass percentages of the oil phase, aqueous phase, and surfactant are: oil phase 45%, aqueous phase 54%, surfactant 1%, and the total mass percentage is 100%. Deionized water or distilled water should be used as the aqueous phase. The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant. The high-speed shearing machine has a rotation speed of 20,000 r / min and a shearing time of 15 min. The ultrasonic emulsification equipment has a power of 500W and an operating time of 5 minutes. S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. The specific process for particle size distribution measurement in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for stratification time testing in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for centrifugal stability testing in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 10 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for interfacial tension testing in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for viscosity testing in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements, and averaging the results. The transmittance test in S2 involves injecting a uniform emulsion sample into a cuvette, placing it in the sample cell of a spectrophotometer, setting the wavelength to 400-800 nm, taking multiple measurements, and averaging the results. The microscopic observation test in S2 involves directly observing the particle morphology of the emulsion using an optical microscope or electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, thus obtaining the concentrated parameters of the emulsion molecules. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance or molecular concentration parameters. The specific process is as follows: an average particle size of 200 nm and a particle size distribution coefficient of 0.12 indicate uniform emulsion dispersion and good emulsification effect; no obvious stratification after standing for more than 72 hours indicates good emulsion stability and good emulsification effect; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 15 minutes indicate high anti-stratification ability and good emulsification effect; an interfacial tension of 3.0 mN / m measured by the spin-drop method indicates a stable adsorption layer and good emulsification effect; an emulsion viscosity of 120 mPa·s indicates stable emulsion structure and good emulsification effect; an emulsion transmittance of 25% indicates good dispersibility and good emulsification effect; and a molecular concentration parameter within the range of 180-220 nm indicates good emulsion stability and good emulsification effect. These comprehensive results indicate that the emulsion has good emulsification effect and long-term stability, making it suitable for long-term storage and dispersion requirements in practical applications.

Claims

1. A quantitative method for evaluating emulsification effect, characterized in that, Includes the following steps: S1. Weigh the oil phase, water phase and surfactant into the reactor, use a high-speed shear machine for initial stirring, and use an ultrasonic emulsification device for uniform dispersion to form an emulsion; S2. Take a portion of the emulsion and measure its particle size distribution to obtain the average particle size and particle size distribution coefficient; take a portion of the emulsion and test its separation time to obtain the separation time; take a portion of the emulsion and test its centrifugal stability to obtain the centrifugal stability parameters; take a portion of the emulsion and test its interfacial tension to obtain the interfacial tension; take a portion of the emulsion and test its viscosity to obtain the emulsion viscosity; take a portion of the emulsion and test its transmittance to obtain the emulsion transmittance; take a portion of the emulsion and conduct microscopic observation to obtain the molecular concentration parameters. S3. Evaluate the emulsification effect based on the average particle size and particle size distribution coefficient, stratification time, centrifugal stability parameters, interfacial tension, viscosity, transmittance, or molecular concentration parameters.

2. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The mass percentages of the oil phase, aqueous phase, and surfactant mentioned in S1 are: oil phase 15%~45%, aqueous phase 50%~80%, surfactant 1%~5%, and the total mass percentage is 100%.

3. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The aqueous phase described in S1 is either deionized water or distilled water.

4. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The surfactant is selected from one of the following: nonionic surfactant, anionic surfactant, or cationic surfactant.

5. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The high-speed shearing machine has a rotation speed of 5000~20000 r / min and a shearing time of 5~15 min.

6. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The ultrasonic emulsification device has a power of 100~500 W and an operating time of 1~5 min.

7. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The specific process for measuring particle size distribution as described in S2 is as follows: A portion of the emulsion is injected into the sample cell of a laser particle size analyzer or dynamic light scattering device. The laser particle size analyzer or dynamic light scattering device is calibrated using standard particles. The refractive index and absorptivity of the emulsion are input into the laser particle size analyzer or dynamic light scattering device, and the average particle size and particle size distribution coefficient of the emulsion are automatically obtained. The specific process for testing the stratification time as described in S2 is as follows: A portion of the emulsion is placed in a test tube and allowed to stand. The stratification changes of the emulsion are recorded periodically to obtain the emulsion stratification time. The specific process for testing the centrifugal stability as described in S2 is as follows: A portion of the emulsion is placed in a high-speed centrifuge at 3000 r / min and centrifuged for 15 min. The stratification after centrifugation is recorded to obtain the emulsion centrifugal stability parameters. The specific process for testing the interfacial tension as described in S2 is as follows: The interfacial tension of the emulsion is measured using the spin-drop method, static drop method, or wire drawing method to obtain the emulsion interfacial tension. The specific process for testing the viscosity as described in S2 is as follows: A portion of the emulsion is placed in the sample cell of a viscometer, and the temperature is set to 20~30℃, and the rotation speed is 10~100 rpm. The viscosity of the emulsion is obtained by measuring the viscosity at a speed of r / min, starting the viscometer, taking multiple measurements and averaging the results; the specific process for the transmittance test described in S2 is as follows: a uniform emulsion sample is injected into a cuvette, then placed in the sample cell of a spectrophotometer, a wavelength of 400~800 nm is set, and multiple measurements are taken to obtain the emulsion transmittance by averaging the results; the specific process for the microscopic observation test described in S2 is as follows: the particle morphology of the emulsion is directly observed using an optical microscope or an electron microscope to obtain intuitive images of the size, shape, and distribution of the emulsion particles, and to obtain the concentrated parameters of the emulsion molecules.

8. The quantitative method for evaluating emulsification effect according to claim 1, characterized in that, The specific process of S3 is as follows: An average particle size of less than 300 nm and a particle size distribution coefficient of less than 0.2 indicate uniform emulsion dispersion and good emulsification effect; a stratification time greater than 72 h or no obvious stratification after standing for more than 72 h indicates good emulsion stability and good emulsification effect; a centrifugation stability parameter of 3000 r / min and no obvious stratification after centrifugation for 15 min indicates high anti-stratification ability and good emulsification effect; an interfacial tension of less than 2~3 mN / m indicates a stable adsorption layer and good emulsification effect; an emulsion viscosity greater than 100 mPa·s indicates stable emulsion structure and good emulsification effect; an emulsion transmittance of less than 30% indicates good emulsion dispersibility and good emulsification effect; and an emulsion molecular concentration parameter within ±20% indicates good emulsion stability and good emulsification effect.