Method for regulating the properties of a dynamically vulcanized chlorinated polyethylene rubber cable compound

Abstract

The application relates to the technical field of high polymer material processing, and discloses a performance regulation and control method for dynamically vulcanized chlorinated polyethylene rubber cable material; the method realizes accurate regulation and control of the performance of the chlorinated polyethylene rubber cable material by establishing a formula-process-performance correlation model, combining multi-parameter online monitoring and real-time feedback control; the dynamic vulcanization process is divided into four stages, i.e., a premixing section, a crosslinking initiation section, a crosslinking development section and a stabilization section, and the temperature, the shear rate and the residence time are independently controlled in each stage; the change of the crosslinking degree is monitored in real time through an online infrared spectrometer, and the amount of the vulcanizing agent and the screw rotation speed are automatically adjusted; a multi-target collaborative optimization algorithm is adopted, and the tensile strength, the elongation at break, the oil resistance and the flame resistance are simultaneously considered; the application solves the problems of low performance regulation and control precision, uneven crosslinking degree distribution and poor multi-performance collaboration in the prior art, and has outstanding creativity and practical value.

Description

Technical Field

[0001] This invention belongs to the field of polymer material processing technology, specifically a method for regulating the performance of dynamically vulcanized chlorinated polyethylene rubber cable material. Background Technology

[0002] Chlorinated polyethylene (CPE) rubber is a high-molecular elastomer produced by chlorination substitution reaction of high-density polyethylene. It has excellent weather resistance, oil resistance, flame retardancy and electrical insulation properties, and is widely used in wire and cable, automotive parts, building waterproofing materials and other fields. Dynamic vulcanization technology is a key process for preparing high-performance CPE rubber cable materials. It causes the rubber phase to undergo a cross-linking reaction under shear force, and at the same time forms an interpenetrating network structure with the plastic phase, thereby significantly improving the overall performance of the material.

[0003] However, the existing production process for dynamically vulcanized CPE rubber cable materials has many shortcomings:

[0004] First, the performance control precision is low. Traditional processes mostly use fixed vulcanization temperature, time and shear rate parameters, which cannot be adjusted in real time according to the molecular weight distribution and chlorine content differences of different batches of raw materials, resulting in large fluctuations in product performance, with batch-to-batch differences reaching more than ±10%.

[0005] Secondly, the uneven distribution of crosslinking degree and the uneven distribution of temperature and shear fields during vulcanization result in large differences in the crosslinking degree inside the cable material, affecting the consistency of mechanical and electrical properties.

[0006] Furthermore, the synergy between multiple properties is poor. Existing methods cannot simultaneously achieve the tensile strength, elongation at break, oil resistance, and flame retardancy of cable materials, often requiring the sacrifice of one property to improve another.

[0007] Finally, the traditional process is energy-intensive, has low production efficiency, requires a long vulcanization time, and cannot achieve online performance control during continuous production.

[0008] Although existing research on the improvement of dynamic vulcanization process for CPE cable materials has mostly focused on formulation optimization, it has failed to fundamentally solve the problem of the disconnect between process and performance, nor has it achieved true real-time online control. Therefore, developing a dynamic vulcanization method that can accurately control the performance of CPE rubber cable materials, improve product consistency, and achieve synergistic optimization of multiple properties is of great practical significance. Summary of the Invention

[0009] In view of the above situation and to overcome the defects of the prior art, the present invention provides a method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material, which effectively solves the problems of low performance control accuracy, uneven crosslinking degree distribution and poor synergy of multiple properties in the prior art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a method for performance regulation of dynamically vulcanized chlorinated polyethylene rubber cable material, comprising the following steps:

[0011] S1: Generate an initial formula based on the formula-process-performance correlation model through the intelligent formula optimization module;

[0012] S2: Feed the raw materials into the premixing section of the twin-screw extruder for uniform mixing;

[0013] S3: The mixed material is subjected to segmented dynamic vulcanization by sequentially passing through the cross-linking initiation section, the cross-linking development section and the stabilization section;

[0014] S4: Real-time collection of vulcanization process parameters via a multi-parameter online monitoring module;

[0015] S5: The real-time feedback control module automatically adjusts process parameters based on the collected parameters and the formula-process-performance correlation model;

[0016] S6: After vulcanization, the material is extruded and granulated to obtain the finished chlorinated polyethylene rubber cable material.

[0017] Furthermore, the formula-process-performance correlation model is obtained by training historical production data and experimental data using machine learning algorithms. The input parameters include raw material composition and process parameters, and the output parameters include product mechanical properties, electrical properties, and weather resistance.

[0018] Furthermore, the formula intelligent optimization module adopts a multi-objective collaborative optimization algorithm, with tensile strength, elongation at break, oil resistance and flame retardancy as objective functions, and raw material cost and production energy consumption as constraints, to generate the optimal formula.

[0019] Further, the initial formulation comprises, by weight: 100 parts of chlorinated polyethylene resin, 20-40 parts of plasticizer, 30-50 parts of flame retardant, 1-3 parts of vulcanizing agent, 0.5-2 parts of vulcanizing agent, 2-5 parts of stabilizer, and 20-60 parts of filler.

[0020] Furthermore, the temperature of the premixing section is controlled at 80-100℃, the screw speed is controlled at 150-200rpm, and the residence time is controlled at 30-60 seconds.

[0021] Furthermore, the temperature of the crosslinking initiation section is controlled at 120-140℃, the screw speed is controlled at 200-250rpm, and the residence time is controlled at 20-40 seconds; the temperature of the crosslinking development section is controlled at 150-170℃, the screw speed is controlled at 180-220rpm, and the residence time is controlled at 40-80 seconds; the temperature of the stabilization section is controlled at 130-150℃, the screw speed is controlled at 150-180rpm, and the residence time is controlled at 20-30 seconds.

[0022] Furthermore, an online vulcanizing agent addition port is provided in the crosslinking development section, which can replenish the vulcanizing agent in real time according to the crosslinking degree monitoring results.

[0023] Furthermore, the multi-parameter online monitoring module includes temperature sensors, pressure sensors, torque sensors, melt viscosity sensors installed in each section of the twin-screw extruder, and an online infrared spectrometer installed at the outlet of the crosslinking development section.

[0024] Furthermore, the real-time feedback control module adopts a PID control algorithm combined with a fuzzy control algorithm to adjust the temperature, screw speed, and amount of vulcanizing agent added to each section of the twin-screw extruder in real time based on the data collected by the multi-parameter online monitoring module.

[0025] Furthermore, it also includes an online performance testing module, which is used to perform online performance testing on the finished cable material after extrusion granulation, and feed the test results back to the intelligent formula optimization module to update the formula-process-performance correlation model.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] (1) High performance control accuracy: By establishing a formula-process-performance correlation model and combining multi-parameter online monitoring and real-time feedback control, this invention achieves precise control of the performance of chlorinated polyethylene rubber cable material. The product performance fluctuation is less than ±3%, which is far better than ±10% of the existing technology.

[0028] (2) Uniform crosslinking degree distribution: The present invention divides the dynamic vulcanization process into four stages, each stage adopts independent temperature, shear rate and residence time control, and monitors the crosslinking degree change in real time by online infrared spectrometer, automatically adjusts the amount of vulcanizing agent added and screw speed, so as to ensure the uniform distribution of crosslinking degree inside the cable material;

[0029] (3) Good multi-performance synergy: The present invention adopts a multi-objective synergistic optimization algorithm, which can simultaneously take into account tensile strength, elongation at break, oil resistance and flame retardancy, and solves the problem of difficulty in synergizing multiple performances in the prior art;

[0030] (4) High production efficiency and low energy consumption: The segmented dynamic vulcanization process of the present invention can significantly shorten the vulcanization time, increase production efficiency by more than 40%, and reduce production energy consumption.

[0031] (5) Strong self-learning ability: The present invention feeds back the finished product performance test results to the formula intelligent optimization module through the online performance detection module, which can continuously update the formula-process-performance correlation model, so that the system has self-learning and self-adaptation capabilities. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0033] In the attached diagram:

[0034] Figure 1 This is an overall process flow diagram of a method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to the present invention.

[0035] The diagram shows: 1. Formulation-process-performance correlation model; 2. Premixing section; 3. Crosslinking initiation section; 4. Crosslinking development section; 5. Stabilization section; 6. Online infrared spectrometer; 7. Multi-objective collaborative optimization algorithm; 8. Intelligent formulation optimization module; 9. Twin-screw extruder; 10. Multi-parameter online monitoring module; 11. Real-time feedback control module; 12. Online vulcanizing agent addition port; 13. Temperature sensor; 14. Pressure sensor; 15. Torque sensor; 16. Melt viscosity sensor; 17. Online performance detection module. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Preparation of General-Purpose Chlorinated Polyethylene Rubber Cable Material

[0038] This embodiment provides a method for performance control of a general-purpose chlorinated polyethylene rubber cable material, applicable to the insulation and sheathing layers of ordinary low-voltage power cables and control cables. The specific steps are as follows:

[0039] S1: Generate the initial formula through the intelligent formula optimization module 8 based on the formula-process-performance correlation model 1.

[0040] The formulation-process-performance correlation model 1 was obtained by training 1200 sets of historical production data and 300 sets of experimental data from the past 5 years using the random forest machine learning algorithm. The input parameters include the chlorine content, molecular weight distribution, plasticizer type and dosage, flame retardant type and dosage, vulcanizing agent type and dosage, temperature of each section, screw speed, and residence time of chlorinated polyethylene resin. The output parameters include tensile strength, elongation at break, 100% constant elongation stress, volume resistivity, oil resistance quality change rate, and oxygen index.

[0041] The intelligent formulation optimization module 8 adopts a multi-objective collaborative optimization algorithm 7, with tensile strength ≥12MPa, elongation at break ≥300%, oil resistance quality change rate ≤10%, and oxygen index ≥30% as objective functions, and raw material cost ≤8000 yuan / ton and production energy consumption ≤350kWh / ton as constraints, to generate the optimal initial formulation.

[0042] The initial formulation generated in this embodiment is as follows by weight: 100 parts of chlorinated polyethylene resin with a chlorine content of 35% and a molecular weight of 150,000; 30 parts of dioctyl phthalate plasticizer; 40 parts of aluminum hydroxide flame retardant; 2 parts of dicumyl peroxide vulcanizing agent; 1 part of triallyl isocyanurate co-vulcanizing agent; 3 parts of calcium stearate stabilizer; and 40 parts of calcium carbonate filler.

[0043] S2: After accurately weighing the above raw materials according to the formula, feed them into a high-speed mixer for premixing for 5 minutes, with the mixing temperature controlled at 60℃ and the mixing speed at 1200 rpm; then feed the premixed material evenly into the premixing section 2 of the twin-screw extruder 9 through a metering feeder for uniform mixing; the twin-screw extruder 9 is a co-rotating parallel twin-screw extruder with a length-to-diameter ratio of 40:1 and a screw diameter of 65 mm; the premixing section 2 is the first to fourth zones of the twin-screw extruder 9, with temperatures controlled at 80℃, 85℃, 90℃, and 95℃ respectively, the screw speed controlled at 180 rpm, and the residence time of the material in the premixing section 2 controlled at 45 seconds; in the premixing section 2, the raw material components are fully melted and mixed under the action of temperature and shear force to form a uniform melt, ensuring that the subsequent vulcanization reaction can proceed uniformly.

[0044] S3: The mixed material is subjected to segmented dynamic vulcanization through cross-linking initiation section 3, cross-linking development section 4 and stabilization section 5 in sequence.

[0045] Crosslinking initiation section 3 is zone 5-7 of twin-screw extruder 9, with temperatures controlled at 120℃, 130℃, and 140℃ respectively, screw speed controlled at 220 rpm, and material residence time in crosslinking initiation section 3 controlled at 30 seconds; in crosslinking initiation section 3, the temperature rises to the decomposition temperature of the vulcanizing agent, and dicumyl peroxide begins to decompose to generate free radicals, initiating crosslinking reaction between chlorinated polyethylene molecular chains.

[0046] Crosslinking development section 4 is zones 8-12 of the twin-screw extruder 9, with temperatures controlled at 150℃, 155℃, 160℃, 165℃, and 170℃ respectively, screw speed controlled at 200 rpm, and material residence time in crosslinking development section 4 controlled at 60 seconds. In crosslinking development section 4, the crosslinking reaction proceeds rapidly, the rubber phase gradually forms a three-dimensional network structure, and at the same time forms an interpenetrating network structure with the plastic phase. In zone 10 of crosslinking development section 4, an online vulcanizing agent addition port 12 is set up, which can replenish vulcanizing agent in real time according to the crosslinking degree monitoring results.

[0047] Stabilization zone 5 is zone 13-14 of twin-screw extruder 9, with temperatures controlled at 140℃ and 130℃ respectively, screw speed controlled at 160 rpm, and material residence time in stabilization zone 5 controlled at 25 seconds. In stabilization zone 5, the cross-linking reaction is basically completed, and the material temperature gradually decreases to prevent excessive cross-linking from causing the material to become brittle.

[0048] S4: The vulcanization process parameters are collected in real time through the multi-parameter online monitoring module 10.

[0049] The multi-parameter online monitoring module 10 includes a temperature sensor 13, a pressure sensor 14, a torque sensor 15, and a melt viscosity sensor 16 installed in each section of the twin-screw extruder 9, as well as an online infrared spectrometer 6 installed in the 12th zone at the outlet of the crosslinking development section 4.

[0050] Temperature sensor 13 collects the actual temperature of each section in real time with an accuracy of ±0.1℃; pressure sensor 14 collects the melt pressure of each section in real time with an accuracy of ±0.01MPa; torque sensor 15 collects the screw torque in real time with an accuracy of ±0.1N・m; melt viscosity sensor 16 collects the melt viscosity in real time with an accuracy of ±1Pa・s; online infrared spectrometer 6 detects the material at 910... The intensity change of the C=C double bond absorption peak at the location was measured, and the degree of crosslinking was calculated in real time. The detection frequency was 1 time / second.

[0051] S5: The real-time feedback control module 11 automatically adjusts the process parameters based on the collected parameters and the formula-process-performance correlation model 1.

[0052] The real-time feedback control module 11 adopts a PID control algorithm combined with a fuzzy control algorithm. When the temperature sensor 13 detects that the actual temperature of a certain segment deviates from the set temperature by more than ±2℃, the real-time feedback control module 11 automatically adjusts the heating power of that segment, with an adjustment cycle of 1 second. When the pressure sensor 14 detects that the melt pressure exceeds the set value by 10%, the real-time feedback control module 11 automatically reduces the screw speed by 10 rpm each time until the pressure returns to the set range. When the online infrared spectrometer 6 detects that the crosslinking degree is lower than 95% of the set value, the real-time feedback control module 11 automatically adds vulcanizing agent through the online vulcanizing agent addition port 12, and the amount added is determined based on the crosslinking degree deviation.

[0053] In this embodiment, during the production process, the online infrared spectrometer 6 detected that the crosslinking degree was 88% at a certain moment, which was lower than the set value of 92%. The real-time feedback control module 11 automatically added 0.15 parts of dicumyl peroxide vulcanizing agent through the online vulcanizing agent addition port 12. After 5 minutes, the crosslinking degree recovered to the set value of 92%.

[0054] S6: After vulcanization, the material is extruded from the die head of the twin-screw extruder 9, cooled to below 40°C by a water cooling tank, dried by an air dryer, and finally granulated by a pelletizer to obtain the finished chlorinated polyethylene rubber cable material.

[0055] This embodiment also includes an online performance testing module 17, which is used to perform online performance testing on the finished cable material after extrusion granulation. The online performance testing module 17 includes an online tensile testing machine, an online oxygen index meter, and an online oil resistance tester, which can detect the tensile strength, elongation at break, oxygen index, and oil resistance quality change rate of the finished product in real time, with a testing frequency of 1 time / 10 minutes. The test results are automatically fed back to the intelligent formula optimization module 8 to update the formula-process-performance correlation model 1, so that the prediction accuracy of the model is continuously improved.

[0056] The performance of the general-purpose chlorinated polyethylene rubber cable material prepared in this embodiment was tested, and the results are as follows: tensile strength 14.2 MPa, elongation at break 380%, stress at 100% constant elongation 4.5 MPa, and volume resistivity 2.3 × 10⁻⁶ MPa. Ω・cm, oil resistance mass change rate 7.8%, oxygen index 32.5%; all performance indicators meet the requirements of GB / T12706.1-2020 standard, and the performance fluctuation between batches is less than ±2.5%.

[0057] Compared with similar products produced by traditional fixed processes, the production efficiency of this embodiment is increased by 45%, the production energy consumption is reduced by 28%, and the overall performance of the product is significantly improved.

[0058] Example 2: Preparation of High Oil-Resistant Chlorinated Polyethylene Rubber Cable Material

[0059] This embodiment provides a method for controlling the performance of high oil-resistant chlorinated polyethylene rubber cable material, which is suitable for special cable sheathing layers used in harsh environments such as oil fields and chemical plants. The specific steps are as follows:

[0060] S1: Generate the initial formula through the intelligent formula optimization module 8 based on the formula-process-performance correlation model 1.

[0061] In this embodiment, for high oil resistance requirements, the intelligent formula optimization module 8 adopts a multi-objective collaborative optimization algorithm 7, with tensile strength ≥15MPa, elongation at break ≥250%, oil resistance quality change rate ≤5%, and oxygen index ≥32% as objective functions, and raw material cost ≤10,000 yuan / ton and production energy consumption ≤400kWh / ton as constraints, to generate the optimal initial formula.

[0062] The initial formulation generated in this embodiment, by weight, is as follows: chlorinated polyethylene resin (chlorine content 40%, molecular weight 180,000 100 parts), trioctyl trimellitate plasticizer 25 parts, magnesium hydroxide flame retardant 45 parts, di-tert-butyl peroxide vulcanizing agent 2.5 parts, trimethylolpropane trimethacrylate co-vulcanizing agent 1.5 parts, barium stearate stabilizer 4 parts, and talc filler 35 parts.

[0063] S2: After accurately weighing the above raw materials according to the formula, feed them into a high-speed mixer for premixing for 6 minutes, with the mixing temperature controlled at 65℃ and the mixing speed at 1300 rpm; then feed the premixed material evenly into the premixing section 2 of the twin-screw extruder 9 through a metering feeder for uniform mixing; the twin-screw extruder 9 is the same as in Example 1; the premixing section 2 is the first to fourth zones of the twin-screw extruder 9, with the temperature controlled at 85℃, 90℃, 95℃, and 100℃ respectively, the screw speed controlled at 190 rpm, and the residence time of the material in the premixing section 2 controlled at 50 seconds; since this example uses chlorinated polyethylene resin with a higher chlorine content, its melting temperature is higher, so the temperature of the premixing section and the screw speed are appropriately increased to ensure that the components can be fully melted and mixed.

[0064] S3: The mixed material is subjected to segmented dynamic vulcanization through cross-linking initiation section 3, cross-linking development section 4 and stabilization section 5 in sequence.

[0065] The crosslinking initiation section 3 is the 5th to 7th zones of the twin-screw extruder 9, with temperatures controlled at 125℃, 135℃, and 145℃ respectively, and the screw speed controlled at 230 rpm. The residence time of the material in the crosslinking initiation section 3 is controlled at 35 seconds. Since the decomposition temperature of di-tert-butyl peroxide is higher than that of dicumyl peroxide, the temperature of the crosslinking initiation section is appropriately increased to ensure that the vulcanizing agent can be fully decomposed to generate free radicals.

[0066] The crosslinking development section 4 is the 8th to 12th zones of the twin-screw extruder 9, with temperatures controlled at 155℃, 160℃, 165℃, 170℃, and 175℃ respectively, and the screw speed controlled at 210 rpm. The residence time of the material in the crosslinking development section 4 is controlled at 70 seconds. In order to obtain a higher crosslinking density and thus improve the oil resistance of the material, the temperature and residence time of the crosslinking development section are appropriately increased in this embodiment. An online vulcanizing agent addition port 12 is also provided in the 10th zone of the crosslinking development section 4, which can replenish the vulcanizing agent in real time according to the crosslinking degree monitoring results.

[0067] Stabilization section 5 is zone 13-14 of twin-screw extruder 9, with temperatures controlled at 145℃ and 135℃ respectively, screw speed controlled at 170 rpm, and material residence time in stabilization section 5 controlled at 28 seconds.

[0068] S4: The vulcanization process parameters are collected in real time through the multi-parameter online monitoring module 10.

[0069] The composition and function of the multi-parameter online monitoring module 10 are exactly the same as in Example 1; the online infrared spectrometer 6 detects the material at 910 The crosslinking degree is calculated in real time by measuring the intensity change of the C=C double bond absorption peak at the location. In this embodiment, the crosslinking degree is set to 95%.

[0070] S5: The real-time feedback control module 11 automatically adjusts the process parameters based on the collected parameters and the formula-process-performance correlation model 1.

[0071] The control algorithm of the real-time feedback control module 11 is the same as that in Example 1. In this example, during the production process, due to the slightly wider molecular weight distribution of a certain batch of chlorinated polyethylene resin, the initial crosslinking reaction rate is slower. The online infrared spectrometer 6 detects a crosslinking degree of 91%, which is lower than the set value of 95%. The real-time feedback control module 11 automatically adds 0.2 parts of di-tert-butyl peroxide vulcanizing agent through the online vulcanizing agent addition port 12 and increases the temperature of the crosslinking development section by 2°C. After 6 minutes, the crosslinking degree recovers to the set value of 95%.

[0072] S6: After vulcanization, the material is extruded from the die head of the twin-screw extruder 9, cooled to below 35°C by a water cooling tank, dried by an air dryer, and finally pelletized by a pelletizer to obtain the finished product of high oil-resistant chlorinated polyethylene rubber cable material.

[0073] This embodiment also includes an online performance testing module 17, which is used to perform online performance testing on the finished product. The test results are automatically fed back to the intelligent formula optimization module 8, which is used to update the formula-process-performance correlation model 1.

[0074] The performance of the high oil-resistant chlorinated polyethylene rubber cable material prepared in this embodiment was tested, and the results are as follows: tensile strength 16.8 MPa, elongation at break 310%, stress at 100% constant elongation 5.8 MPa, and volume resistivity 1.8 × 10⁻⁶ MPa. Ω・cm, oil resistance mass change rate 3.2%, oxygen index 34.1%; all performance indicators meet the requirements for special cable sheath materials in GB / T 12706.2-2020 standard, and the performance fluctuation between batches is less than ±2.8%.

[0075] Compared with the high oil-resistant CPE cable material produced by the traditional fixed process, the oil resistance quality change rate of this embodiment is reduced from 8% to 3.2%, which is 60% higher. At the same time, the production efficiency is increased by 42% and the production energy consumption is reduced by 25%.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material, characterized in that, Includes the following steps: S1: The initial formula is generated by the intelligent formula optimization module (8) based on the formula-process-performance correlation model (1); S2: Feed the raw materials into the premixing section (2) of the twin-screw extruder (9) for uniform mixing; S3: The mixed material is subjected to segmented dynamic vulcanization through the crosslinking initiation section (3), crosslinking development section (4) and stabilization section (5) in sequence; S4: Real-time collection of vulcanization process parameters through the multi-parameter online monitoring module (10); S5: The real-time feedback control module (11) automatically adjusts the process parameters based on the collected parameters and the formula-process-performance correlation model (1); S6: After vulcanization, the material is extruded and granulated to obtain the finished chlorinated polyethylene rubber cable material.

2. The method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The formula-process-performance correlation model (1) is obtained by training historical production data and experimental data through machine learning algorithms. The input parameters include raw material composition and process parameters, and the output parameters include product mechanical properties, electrical properties and weather resistance.

3. The method for performance control of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The intelligent formulation optimization module (8) adopts a multi-objective collaborative optimization algorithm (7), with tensile strength, elongation at break, oil resistance and flame retardancy as objective functions, and raw material cost and production energy consumption as constraints, to generate the optimal formulation.

4. The method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The initial formulation, by weight, comprises: 100 parts of chlorinated polyethylene resin, 20-40 parts of plasticizer, 30-50 parts of flame retardant, 1-3 parts of vulcanizing agent, 0.5-2 parts of co-vulcanizing agent, 2-5 parts of stabilizer, and 20-60 parts of filler.

5. The method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The temperature of the premixing section (2) is controlled at 80-100℃, the screw speed is controlled at 150-200rpm, and the residence time is controlled at 30-60 seconds.

6. The method for performance control of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The temperature of the crosslinking initiation section (3) is controlled at 120-140℃, the screw speed is controlled at 200-250rpm, and the residence time is controlled at 20-40 seconds; the temperature of the crosslinking development section (4) is controlled at 150-170℃, the screw speed is controlled at 180-220rpm, and the residence time is controlled at 40-80 seconds; the temperature of the stabilization section (5) is controlled at 130-150℃, the screw speed is controlled at 150-180rpm, and the residence time is controlled at 20-30 seconds.

7. The method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, An online vulcanizing agent addition port (12) is provided in the crosslinking development section (4), which can add vulcanizing agent in real time according to the crosslinking degree monitoring results.

8. The method for performance control of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The multi-parameter online monitoring module (10) includes a temperature sensor (13), a pressure sensor (14), a torque sensor (15), a melt viscosity sensor (16) installed in each section of the twin-screw extruder (9), and an online infrared spectrometer (6) installed at the outlet of the crosslinking development section (4).

9. The method for controlling the performance of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, The real-time feedback control module (11) adopts a PID control algorithm combined with a fuzzy control algorithm. Based on the data collected by the multi-parameter online monitoring module (10), it adjusts the temperature, screw speed and amount of additive in each section of the twin-screw extruder (9) in real time.

10. The method for performance control of dynamically vulcanized chlorinated polyethylene rubber cable material according to claim 1, characterized in that, It also includes an online performance testing module (17) for online performance testing of the finished cable material after extrusion granulation, and feeding the test results back to the intelligent formula optimization module (8) for updating the formula-process-performance correlation model (1).

Images