Method and system for detecting viscosity change of surfactant

Abstract

The invention belongs to the field of viscosity detection, relates to a data analysis technology, and in particular relates to a method and a system for detecting viscosity change of a surfactant, which are used for solving the problem that an existing method for detecting the viscosity change of the surfactant cannot capture the viscosity change rule of the surfactant under complex conditions. Comprising a viscosity actual detection module, a viscosity change detection module, a viscosity change analysis module and a deep analysis module, the viscosity actual detection module, the viscosity change detection module, the viscosity change analysis module and the deep analysis module are in communication connection in sequence; the viscosity real detection module is used for detecting the actual viscosity, the viscosity change detection module is used for detecting the viscosity under different conditions, the viscosity change analysis module is used for analyzing the viscosity change of the surfactant, and the deep analysis module is used for deeply analyzing the critical condition of the viscosity change; according to the method, the viscosity change threshold value can be determined, and the viscosity change rule of the surfactant under complex conditions can be accurately captured.

Description

Technical Field

[0001] The invention belongs to the field of viscosity detection, relates to data analysis technology, and specifically provides a method and system for detecting viscosity changes of a surfactant. Background Art

[0002] Surfactants are a class of organic compounds with a unique amphiphilic structure, that is, they contain both hydrophilic and lipophilic groups. Their amphiphilic structure enables them to reduce surface tension and arrange themselves in a directional manner on the interface, thereby changing the surface and interfacial properties of the system. This is the basis for surfactants to exert their various functions, such as emulsification, dispersion, solubilization, foaming, defoaming, etc., which are all closely related to reducing surface tension.

[0003] Surfactants are widely used in many industrial fields and daily necessities. The viscosity characteristics of their solutions are one of the key factors affecting product performance and usage effects. The viscosity of surfactants is directly related to the fluidity of the product and its adhesion to the surface of objects, which in turn affects the usage effect.

[0004] However, existing viscosity detection methods have many shortcomings and limited detection accuracy. It is often difficult to accurately capture the viscosity change law of surfactants under complex conditions (such as temperature, concentration, etc.), and it is also impossible to accurately find the thresholds of different conditions for viscosity changes from normal to abnormal moments.

[0005] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0006] The purpose of the present invention is to provide a method and system for detecting the viscosity change of a surfactant, which is used to solve the problem that the existing method for detecting the viscosity change of a surfactant cannot capture the viscosity change law of the surfactant under complex conditions, and cannot find the threshold value of different conditions of the viscosity change from normal to abnormal time; The technical problem to be solved by the present invention is: how to provide a method and system for detecting the viscosity change of surfactants that can capture the viscosity change law of surfactants under complex conditions and find the threshold values ​​of viscosity change under different conditions from normal to abnormal moments.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A surfactant viscosity change detection system comprises a viscosity detection module, a viscosity change detection module, a viscosity change analysis module and a depth analysis module; the viscosity detection module, the viscosity change detection module, the viscosity change analysis module and the depth analysis module are sequentially connected in communication; The viscosity actual detection module is used to detect the actual viscosity of the surfactant: the surfactant to be detected for viscosity change is marked as the analysis object, the viscosity actual value NS and the standard viscosity range [MIN, MAX] of the analysis object are obtained, and the standard viscosity range [MIN, MAX] is compared with the viscosity actual value NS to determine whether the viscosity of the analysis object meets the requirements; The viscosity change detection module is used to detect the viscosity under different conditions: the factors affecting the viscosity change of the surfactant are marked as analysis parameters, the analysis parameters include temperature and concentration, and a viscosity-analysis parameter curve is drawn, the viscosity-analysis parameter curve includes a viscosity analysis value NF-concentration curve and a viscosity analysis value NF-temperature curve; The viscosity change analysis module is used to analyze the viscosity change of the surfactant: the actual viscosity value NS obtained by the viscosity actual inspection module under the conditions of 100% mass fraction and T°C is used as the standard point, the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve are used as analysis points, and the viscosity change rate NB of each analysis point relative to the standard point is obtained, and the viscosity change rate NB is used to judge whether the viscosity change of the analysis object meets the requirements; The in-depth analysis module is used to perform in-depth analysis on the critical conditions of viscosity change: obtain the critical curve, and determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal through the viscosity change rate NB corresponding to all integer points on the critical curve.

[0008] Furthermore, the process of obtaining the actual viscosity value NS is as follows: the viscosity of the analysis object is tested using a rotational viscometer: the analysis object with a mass fraction of 100% is placed in a test container, the temperature is controlled to T°C by a water bath, and the rotor size, speed and measurement time are set as fixed parameters; the rotational viscometer is started, and the viscosity value is recorded after the reading is stable, and the same analysis object is measured three times and the average value is taken to obtain the actual viscosity value NS.

[0009] Furthermore, the judgment process of the viscosity of the analysis object includes: obtaining the standard viscosity range [MIN, MAX] of the analysis object, where MIN is the minimum value of the standard viscosity and MAX is the maximum value of the standard viscosity; comparing the actual viscosity value NS with the standard viscosity range [MIN, MAX]: if the actual viscosity value NS≥MAX or the actual viscosity value ≤MIN, it is judged that the viscosity of the analysis object does not meet the requirements, and the analysis object is marked as an abnormal object; obtaining the production date, shelf life and actual date of the abnormal object, calculating the expiration date through the production date and shelf life, and comparing the expiration date with the actual date: if the actual date exceeds the expiration date, it is judged that the cause of the abnormality is overtime deterioration; if the actual date does not exceed the expiration date, it is judged that the cause of the abnormality is production abnormality, and an abnormal signal is generated and sent to the mobile phone terminal of the administrator; if the actual viscosity value NS≥MIN and the actual viscosity value ≤MAX, it is judged that the viscosity of the analysis object meets the requirements, and a stability analysis of the viscosity change is performed.

[0010] Furthermore, the specific process of drawing the viscosity analysis value-concentration curve is as follows: the surfactant is mixed with distilled water in a mass ratio of a%, 2a%, ..., na%, to prepare analysis objects of different concentrations, where a is a positive integer representing the concentration interval; the temperature of the analysis object is fixed at T°C by a water bath, and the viscosity of each group of analysis objects is measured three times by a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the concentration of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and points are plotted and the viscosity analysis value NF-concentration curve is drawn.

[0011] Furthermore, the specific process of drawing the viscosity analysis value-temperature curve is as follows: the temperature of the analysis object with a mass fraction of 100% is controlled to T+b℃, T+2b℃, ..., T+mb℃ by a water bath, where b is a positive integer representing the temperature interval; the viscosity of each group of analysis objects is measured three times by a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the temperature of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and points are plotted and the viscosity analysis value NF-temperature curve is drawn.

[0012] Furthermore, the viscosity analysis value NF and the viscosity actual value NS in the viscosity-analysis parameter curve are numerically calculated to obtain the viscosity change rate NB of each analysis point relative to the standard point in the viscosity-analysis parameter curve; the viscosity change rate NB is compared with the preset viscosity change threshold NBmax: if all viscosity change rates NB are less than or equal to the viscosity change threshold NBmax, it is judged that the viscosity change of the analysis object meets the requirements and no processing is required; if there is a viscosity change rate NB greater than the viscosity change threshold NBmax, it is judged that there is a certain concentration or temperature, after exceeding the concentration or temperature, the viscosity change of the analysis object does not meet the requirements, and the concentration and temperature corresponding to the viscosity change rate NB that does not meet the requirements are marked as the concentration critical value and the temperature critical value, respectively.

[0013] Furthermore, the process of obtaining the critical curve includes: marking the concentration critical value and the temperature critical value as critical points, taking the critical point as the midpoint of the X-axis in the viscosity-analysis parameter curve, extending a critical region of L1 unit length on both sides of the X-axis, intercepting the viscosity-analysis parameter curve in the critical region as the critical curve, then there are (2*L1+1) integer points on the X-axis of the critical curve, and the difference between adjacent integer points is 1% of the mass fraction or 1°C of the temperature.

[0014] Furthermore, the viscosity change rate NB corresponding to all integer points on the critical curve is compared with the preset viscosity change threshold NBmax: if there are two adjacent integer points, one of which has a viscosity change rate NB less than or equal to the viscosity change threshold NBmax, which meets the requirements, and the other has a viscosity change rate NB greater than the viscosity change threshold NBmax, which does not meet the requirements, then it is judged that there is a concentration threshold or a temperature threshold, and the viscosity change of the analysis object does not meet the requirements after exceeding or falling below the threshold, otherwise the viscosity change of the analysis object meets the requirements, and the concentration or temperature corresponding to the integer point that meets the requirements is marked as the concentration threshold or temperature threshold of the viscosity change of the analysis object, and the concentration threshold or temperature threshold represents the threshold of the analysis parameter when the viscosity change changes from normal to abnormal.

[0015] A method for detecting a change in surfactant viscosity comprises the following steps: Step 1: Mark the surfactant to be tested for viscosity change as the analysis object, obtain the standard viscosity range [MIN, MAX] and the actual viscosity value NS of the analysis object, and compare the actual viscosity value NS with the standard viscosity range [MIN, MAX] to determine whether the viscosity of the analysis object meets the requirements; Step 2: Mark the factors that affect the viscosity change of the surfactant as analysis parameters, including temperature and concentration, and draw a viscosity-analysis parameter curve, which includes a viscosity analysis value NF-concentration curve and a viscosity analysis value NF-temperature curve; Step 3: Take the actual viscosity value NS obtained by the mass fraction of 100% and the temperature of T℃ in the viscosity inspection module as the standard point, take the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve as the analysis point, and perform numerical calculation on the viscosity analysis value NF and the actual viscosity value NS to obtain the viscosity change rate NB; compare the viscosity change rate NB with the preset viscosity change threshold NBmax to determine the concentration critical value and the temperature critical value; Step 4: Take the concentration critical value and temperature critical value as the critical point to obtain the critical area and critical curve, compare the viscosity change rate NB corresponding to all integer points on the critical curve with the preset viscosity change threshold NBmax, and determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal.

[0016] The present invention has the following beneficial effects: 1. The viscosity inspection module measures the actual viscosity of the surfactant multiple times and takes the average value, and compares it with the standard viscosity range, which can accurately determine whether the viscosity meets the requirements and reduce misjudgment. At the same time, by timely discovering objects with abnormal viscosity and analyzing the causes of abnormalities, such as overtime deterioration or production abnormalities, it is helpful to take measures to ensure product quality and reduce the occurrence of unqualified products. 2. The viscosity change detection module considers the influence of factors such as temperature and concentration on viscosity change, and draws the viscosity-analysis parameter curve, which helps to fully understand the viscosity characteristics of surfactants under different conditions; 3. The viscosity change analysis module calculates the viscosity change rate and compares it with the threshold value, which can accurately evaluate the stability of surfactant viscosity changes and provide strong support for the stability research of product performance; 4. The critical value and threshold of viscosity change are determined through the deep analysis module, which accurately captures the viscosity change law of surfactants under complex conditions, provides accurate conditional restrictions for the rational use of surfactants, and helps to optimize the use environment and conditions in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a flow chart of the method of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: Figure 1 As shown, a system for detecting viscosity changes of surfactants includes a viscosity detection module, a viscosity change detection module, a viscosity change analysis module and a depth analysis module; the viscosity detection module, the viscosity change detection module, the viscosity change analysis module and the depth analysis module are communicatively connected in sequence.

[0021] The viscosity test module is used to test the actual viscosity of the surfactant: the surfactant to be tested for viscosity change is marked as the analysis object, and the viscosity of the analysis object is tested using a rotary viscometer: the analysis object with a mass fraction of 100% is placed in the test container, the temperature is controlled to T℃ through a water bath, and the rotor size, speed and measurement time are set as fixed parameters; the rotary viscometer is started, and the viscosity value is recorded after the reading is stable, and the same analysis object is measured three times to obtain the average value to obtain the actual viscosity value NS; the viscosity test module takes the average value of multiple measurements of the actual viscosity of the surfactant and compares it with the standard viscosity range, which can accurately determine whether the viscosity meets the requirements and reduce misjudgment; Obtain the standard viscosity range [MIN, MAX] of the analysis object, where MIN is the minimum value of the standard viscosity and MAX is the maximum value of the standard viscosity; compare the actual viscosity value NS with the standard viscosity range [MIN, MAX]: if the actual viscosity value NS ≥ MAX or the actual viscosity value ≤ MIN, then it is determined that the viscosity of the analysis object does not meet the requirements, and the analysis object is marked as an abnormal object; obtain the production date, shelf life and actual date of the abnormal object, calculate the expiration date through the production date and shelf life, and compare the expiration date with the actual date: if the actual date exceeds the expiration date, then the cause of the abnormality is determined to be time-out deterioration; if the actual date does not exceed the expiration date, then the cause of the abnormality is determined to be production abnormality, and an abnormal signal is generated and sent to the mobile phone terminal of the manager; if the actual viscosity value NS ≥ MIN and the actual viscosity value ≤ MAX, then it is determined that the viscosity of the analysis object meets the requirements, and the stability analysis of the viscosity change is performed; by timely discovering objects with abnormal viscosity and analyzing the causes of the abnormality, such as time-out deterioration or production abnormality, it is helpful to take measures to ensure product quality and reduce the occurrence of unqualified products.

[0022] The viscosity change detection module is used to detect the viscosity under different conditions: the factors affecting the viscosity change of the surfactant are marked as analysis parameters, including temperature and concentration, and the viscosity-analysis parameter curve is drawn. The viscosity-analysis parameter curve includes the viscosity analysis value NF-concentration curve and the viscosity analysis value NF-temperature curve; The specific process of drawing the viscosity analysis value-concentration curve is as follows: the surfactant is mixed with distilled water at a mass ratio of a%, 2a%, ..., na%, to prepare analysis objects of different concentrations, where a is a positive integer representing the concentration interval; the temperature of the analysis object is fixed at T℃ through a water bath, and the viscosity of each group of analysis objects is measured three times by a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the concentration of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and points are plotted and a viscosity analysis value NF-concentration curve is drawn; The specific process of drawing the viscosity analysis value-temperature curve is as follows: the temperature of the analysis object with a mass fraction of 100% is controlled to T+b℃, T+2b℃, ..., T+mb℃ through a water bath, where b is a positive integer representing the temperature interval; the viscosity of each group of analysis objects is measured three times using a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the temperature of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and the points are plotted and the viscosity analysis value NF-temperature curve is drawn; the influence of factors such as temperature and concentration on the viscosity change is considered through the viscosity change detection module, and the viscosity-analysis parameter curve is drawn, which is helpful to fully understand the viscosity characteristics of surfactants under different conditions.

[0023] The viscosity change analysis module is used to analyze the viscosity change of surfactants: the actual viscosity value NS obtained by the viscosity test module with a mass fraction of 100% and a temperature of T℃ is used as the standard point, and the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve are used as analysis points. The viscosity analysis value NF and the viscosity actual value NS in the viscosity-analysis parameter curve are numerically calculated to obtain the viscosity change rate NB of each analysis point relative to the standard point in the viscosity-analysis parameter curve; the viscosity change rate NB is compared with the preset viscosity change threshold NBmax: if all viscosity change rates NB are less than or equal to the viscosity change threshold NBmax, it is judged that the viscosity change of the analysis object meets the requirements and no processing is required; if there is a viscosity change rate NB greater than the viscosity change threshold NBmax, it is judged that there is a certain concentration or temperature, after exceeding the concentration or temperature, the viscosity change of the analysis object does not meet the requirements, and the concentration and temperature corresponding to the viscosity change rate NB that does not meet the requirements are marked as the concentration critical value and the temperature critical value respectively; by calculating the viscosity change rate through the viscosity change analysis module and comparing it with the threshold, the stability of the viscosity change of the surfactant can be accurately evaluated, providing strong support for the stability research of product performance.

[0024] The in-depth analysis module is used to conduct in-depth analysis on the critical conditions of viscosity change: mark the concentration critical value and temperature critical value as critical points, take the critical point as the midpoint of the X-axis in the viscosity-analysis parameter curve, extend the critical area of ​​L1 unit length to both sides of the X-axis, intercept the viscosity-analysis parameter curve in the critical area as the critical curve, then there are (2*L1+1) integer points on the X-axis of the critical curve, and the difference between adjacent integer points is 1% of the mass fraction or 1°C of the temperature; compare the viscosity change rate NB corresponding to all integer points on the critical curve with the preset viscosity change threshold NBmax: if there are two adjacent integer points, one of which has a viscosity change rate NB less than or equal to the viscosity change threshold NBmax, which meets the requirements, and the other one If the viscosity change rate NB is greater than the viscosity change threshold NBmax and does not meet the requirements, it is judged that there is a concentration threshold or temperature threshold. After exceeding or falling below the threshold, the viscosity change of the analyzed object does not meet the requirements. On the contrary, the viscosity change of the analyzed object meets the requirements, and the concentration or temperature corresponding to the whole point that meets the requirements is marked as the concentration threshold or temperature threshold of the viscosity change of the analyzed object. The concentration threshold or temperature threshold represents the threshold of the analysis parameter when the viscosity changes from normal to abnormal. The critical value and threshold of the viscosity change are determined by the deep analysis module, and the viscosity change law of the surfactant under complex conditions is accurately captured, which provides accurate conditional restrictions for the rational use of surfactants and helps to optimize the use environment and conditions in practical applications.

[0025] Embodiment 2: Figure 2 As shown, a method for detecting a change in surfactant viscosity comprises the following steps: Step 1: Mark the surfactant to be tested for viscosity change as the analysis object, and use a rotary viscometer to test the viscosity of the analysis object; obtain the standard viscosity range [MIN, MAX] of the analysis object, and compare the actual viscosity value NS with the standard viscosity range [MIN, MAX] to determine whether the viscosity of the analysis object meets the requirements; Step 2: Mark the factors that affect the viscosity change of the surfactant as analysis parameters, including temperature and concentration, and draw a viscosity-analysis parameter curve, which includes a viscosity analysis value NF-concentration curve and a viscosity analysis value NF-temperature curve; Step 3: Take the actual viscosity value NS obtained by the mass fraction of 100% and the temperature of T℃ in the viscosity inspection module as the standard point, take the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve as the analysis point, and perform numerical calculation on the viscosity analysis value NF and the actual viscosity value NS to obtain the viscosity change rate NB; compare the viscosity change rate NB with the preset viscosity change threshold NBmax to determine the concentration critical value and the temperature critical value; Step 4: Take the concentration critical value and temperature critical value as the critical point to obtain the critical area and critical curve, compare the viscosity change rate NB corresponding to all integer points on the critical curve with the preset viscosity change threshold NBmax, and determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal.

[0026] A method and system for detecting viscosity change of a surfactant. When in operation, a surfactant to be detected for viscosity change is marked as an analysis object, and the actual viscosity value NS of the analysis object is compared with the standard viscosity range [MIN, MAX] to determine whether the viscosity of the analysis object meets the requirements; factors affecting the viscosity change of the surfactant are marked as analysis parameters, and a viscosity-analysis parameter curve is drawn; the viscosity analysis value NF and the actual viscosity value NS are numerically calculated to obtain the viscosity change rate NB of each analysis point in the viscosity-analysis parameter curve relative to the standard point, and the viscosity change rate NB is compared with a preset viscosity change threshold NBmax to determine the concentration critical value and the temperature critical value; the concentration critical value and the temperature critical value are used as critical points to obtain the critical area and the critical curve, and the viscosity change rate NB corresponding to all integer points on the critical curve is compared with the preset viscosity change threshold NBmax to determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal.

[0027] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A system for detecting changes in surfactant viscosity, characterized in that: It includes a viscosity inspection module, a viscosity change detection module, a viscosity change analysis module and a depth analysis module; the viscosity inspection module, the viscosity change detection module, the viscosity change analysis module and the depth analysis module are sequentially connected in communication; The viscosity actual detection module is used to detect the actual viscosity of the surfactant: the surfactant to be detected for viscosity change is marked as the analysis object, the viscosity actual value NS and the standard viscosity range [MIN, MAX] of the analysis object are obtained, and the standard viscosity range [MIN, MAX] is compared with the viscosity actual value NS to determine whether the viscosity of the analysis object meets the requirements; The viscosity change detection module is used to detect the viscosity under different conditions: the factors affecting the viscosity change of the surfactant are marked as analysis parameters, the analysis parameters include temperature and concentration, and a viscosity-analysis parameter curve is drawn, the viscosity-analysis parameter curve includes a viscosity analysis value NF-concentration curve and a viscosity analysis value NF-temperature curve; The viscosity change analysis module is used to analyze the viscosity change of the surfactant: the actual viscosity value NS obtained by the viscosity actual inspection module under the conditions of 100% mass fraction and T°C is used as the standard point, the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve are used as analysis points, and the viscosity change rate NB of each analysis point relative to the standard point is obtained, and the viscosity change rate NB is used to judge whether the viscosity change of the analysis object meets the requirements; The in-depth analysis module is used to perform in-depth analysis on the critical conditions of viscosity change: obtain the critical curve, and determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal through the viscosity change rate NB corresponding to all integer points on the critical curve.

2. A system for detecting viscosity changes of surfactants according to claim 1, characterized in that: The process of obtaining the actual viscosity value NS is as follows: use a rotational viscometer to detect the viscosity of the analysis object: place the analysis object with a mass fraction of 100% in the detection container, control the temperature to T℃ through a water bath, set the fixed parameters of rotor size, speed and measurement time; start the rotational viscometer, record the viscosity value after the reading stabilizes, and measure the same analysis object three times to take the average value to obtain the actual viscosity value NS.

3. A system for detecting viscosity changes of surfactants according to claim 2, characterized in that: The judgment process of the viscosity of the analysis object includes: obtaining the standard viscosity range [MIN, MAX] of the analysis object, where MIN is the minimum value of the standard viscosity and MAX is the maximum value of the standard viscosity; comparing the actual viscosity value NS with the standard viscosity range [MIN, MAX]: if the actual viscosity value NS ≥ MAX or the actual viscosity value ≤ MIN, it is judged that the viscosity of the analysis object does not meet the requirements, and the analysis object is marked as an abnormal object; obtaining the production date, shelf life and actual date of the abnormal object, calculating the expiration date through the production date and shelf life, and comparing the expiration date with the actual date: if the actual date exceeds the expiration date, it is judged that the cause of the abnormality is overtime deterioration; if the actual date does not exceed the expiration date, it is judged that the cause of the abnormality is production abnormality, and an abnormal signal is generated and sent to the mobile phone terminal of the administrator.

4. A system for detecting viscosity changes of surfactants according to claim 3, characterized in that: If the actual viscosity value NS≥MIN and the actual viscosity value ≤MAX, it is judged that the viscosity of the analysis object meets the requirements, and the stability analysis of the viscosity change is performed.

5. A system for detecting viscosity changes of surfactants according to claim 4, characterized in that: The specific process of drawing the viscosity analysis value-concentration curve is as follows: the surfactant is mixed with distilled water in a mass ratio of a%, 2a%, ..., na% to prepare analysis objects of different concentrations, where a is a positive integer representing the concentration interval; the temperature of the analysis object is fixed at T℃ by a water bath, and the viscosity of each group of analysis objects is measured three times by a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the concentration of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and points are plotted and the viscosity analysis value NF-concentration curve is drawn.

6. A system for detecting viscosity changes of surfactants according to claim 5, characterized in that: The specific process of drawing the viscosity analysis value-temperature curve is as follows: the temperature of the analysis object with a mass fraction of 100% is controlled to T+b℃, T+2b℃, ..., T+mb℃ by a water bath, where b is a positive integer representing the temperature interval; the viscosity of each group of analysis objects is measured three times by a rotary viscometer and the average value is taken to obtain the viscosity analysis value NF; a rectangular coordinate system is established with the temperature of the analysis object as the X-axis and the viscosity analysis value as the Y-axis, and the points are plotted and the viscosity analysis value NF-temperature curve is drawn.

7. A system for detecting viscosity changes of surfactants according to claim 6, characterized in that: The viscosity analysis value NF and the viscosity actual value NS in the viscosity-analysis parameter curve are numerically calculated to obtain the viscosity change rate NB of each analysis point relative to the standard point in the viscosity-analysis parameter curve; the viscosity change rate NB is compared with the preset viscosity change threshold NBmax: if all viscosity change rates NB are less than or equal to the viscosity change threshold NBmax, it is judged that the viscosity change of the analysis object meets the requirements and no processing is required; if there is a viscosity change rate NB greater than the viscosity change threshold NBmax, it is judged that there is a certain concentration or temperature, after exceeding this concentration or temperature, the viscosity change of the analysis object does not meet the requirements, and the concentration and temperature corresponding to the viscosity change rate NB that does not meet the requirements are marked as the concentration critical value and the temperature critical value, respectively.

8. A system for detecting viscosity changes of surfactants according to claim 7, characterized in that: The process of obtaining the critical curve includes: marking the concentration critical value and the temperature critical value as critical points, taking the critical point as the midpoint of the X-axis in the viscosity-analysis parameter curve, extending the critical region of L1 unit length on both sides of the X-axis, intercepting the viscosity-analysis parameter curve in the critical region as the critical curve, then there are (2*L1+1) integer points on the X-axis of the critical curve, and the difference between adjacent integer points is 1% mass fraction or 1°C temperature.

9. A system for detecting viscosity changes of surfactants according to claim 8, characterized in that: The viscosity change rate NB corresponding to all integer points on the critical curve is compared with the preset viscosity change threshold NBmax: if there are two adjacent integer points, one of which has a viscosity change rate NB less than or equal to the viscosity change threshold NBmax, which meets the requirements, and the other has a viscosity change rate NB greater than the viscosity change threshold NBmax, which does not meet the requirements, then it is judged that there is a concentration threshold or temperature threshold, and after exceeding or falling below the threshold, the viscosity change of the analysis object does not meet the requirements, otherwise the viscosity change of the analysis object meets the requirements, and the concentration or temperature corresponding to the integer point that meets the requirements is marked as the concentration threshold or temperature threshold of the viscosity change of the analysis object, and the concentration threshold or temperature threshold represents the threshold of the analysis parameter when the viscosity change changes from normal to abnormal.

10. A method for detecting a change in surfactant viscosity, characterized in that: The following steps are involved: Step 1: Mark the surfactant to be tested for viscosity change as the analysis object, obtain the standard viscosity range [MIN, MAX] and the actual viscosity value NS of the analysis object, and compare the actual viscosity value NS with the standard viscosity range [MIN, MAX] to determine whether the viscosity of the analysis object meets the requirements; Step 2: Mark the factors that affect the viscosity change of the surfactant as analysis parameters, including temperature and concentration, and draw a viscosity-analysis parameter curve, which includes a viscosity analysis value NF-concentration curve and a viscosity analysis value NF-temperature curve; Step 3: Take the actual viscosity value NS obtained by the mass fraction of 100% and the temperature of T℃ in the viscosity inspection module as the standard point, take the different viscosity analysis values ​​NF in the viscosity-analysis parameter curve as the analysis point, and perform numerical calculation on the viscosity analysis value NF and the actual viscosity value NS to obtain the viscosity change rate NB; compare the viscosity change rate NB with the preset viscosity change threshold NBmax to determine the concentration critical value and the temperature critical value; Step 4: Take the concentration critical value and temperature critical value as the critical point to obtain the critical area and critical curve, compare the viscosity change rate NB corresponding to all integer points on the critical curve with the preset viscosity change threshold NBmax, and determine the threshold of the analysis parameter when the viscosity changes from normal to abnormal.

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