Apparatus and method for determining mixing conditions, method for producing a mixed product

Abstract

To provide a kneading condition derivation device and method capable of deriving appropriate kneading conditions, and a manufacturing method of a kneaded product.SOLUTION: There is provided a kneading condition derivation device 1 that is a device for deriving kneading conditions when mixing two or more kinds of materials including resin to obtain a kneaded product, and comprises: a relation derivation processing unit 23 that obtains a relation between a change in a tensile strength of the kneaded product and the kneading conditions, based on actual measured values obtained in test manufacturing in which the kneaded product is manufactured by changing the kneading conditions; and a kneading condition derivation processing unit 24 that derives a profile of kneading conditions over time from a start of kneading to an end of kneading using the relation derived by the relation derivation processing unit 23.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to an apparatus and method for deriving kneading conditions, and to a method for producing kneaded products. [Background technology]

[0002] For example, viscous resins such as rubber and plastics, before crosslinking, are mixed (kneaded) with various additives and compounding agents using a mixing device such as a batch-type kneader to produce the desired material.

[0003] Furthermore, Patent Document 1 is a prior art document related to the invention of this application. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-42169 [Overview of the project] [Problems that the invention aims to solve]

[0005] By the way, when kneading, it is important to mix the ingredients uniformly in a short amount of time. Therefore, it is desirable to set the kneading conditions appropriately so that the ingredients can be mixed uniformly in a short amount of time.

[0006] However, traditionally, determining the appropriate mixing conditions required repeated test manufacturing and evaluation, which presented significant challenges in terms of cost and time.

[0007] Therefore, the present invention aims to provide a kneading condition deriving apparatus and method capable of deriving appropriate kneading conditions, and a method for producing a kneaded product. [Means for solving the problem]

[0008] An object of the present invention is to solve the above problems, and an apparatus for deriving kneading conditions when obtaining a mixture by mixing two or more materials including a resin, which changes the kneading conditions and conducts a test production to produce the mixture, and based on this, a relationship derivation processing unit that obtains the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, and a kneading condition derivation processing unit that derives a profile of the kneading conditions over time from the start to the end of kneading using the relationship derived by the relationship derivation processing unit, is provided. training When obtaining a mixture by mixing two or more materials including a resin, an apparatus for deriving kneading conditions, training changes the kneading conditions and conducts a test production to produce the mixture, training Based on this, a relationship derivation processing unit that obtains the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, Tensile strength of the manufactured compound and a kneading condition derivation processing unit that derives a profile of the kneading conditions over time from the start to the end of kneading using the relationship derived by the relationship derivation processing unit, is provided. The relationship derivation processing unit uses equations (1) and (2) shown in [Equation 1] as equations representing the relationship between the change in the tensile strength of the kneaded material and the kneading conditions, and based on the measured values, the fitting coefficient C in equations (1) and (2) 1 ~C 3 To find,

Number

[0009] Also, an object of the present invention is to solve the above problems, and a method for deriving kneading conditions when obtaining a mixture by mixing two or more materials including a resin, which changes the kneading conditions and conducts a test production to produce the mixture, and based on this, a relationship derivation step that obtains the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, training and a kneading condition derivation step that derives a profile of the kneading conditions over time from the start to the end of kneading using the relationship derived by the relationship derivation step, is provided. training When obtaining a mixture by mixing two or more materials including a resin, a method for deriving kneading conditions, training changes the kneading conditions and conducts a test production to produce the mixture, Tensile strength of the manufactured compound Based on this, a relationship derivation step that obtains the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, The relationship derivation processing unit uses equations (1) and (2) shown in [Equation 1] as equations representing the relationship between the change in the tensile strength of the kneaded material and the kneading conditions, and based on the measured values, the fitting coefficient C in equations (1) and (2) 1 ~C 3 To find,

Number

[0010] Furthermore, the present invention aims to solve the above problems by providing a method for producing a kneaded product, which involves mixing the materials according to the kneading condition profile derived by the kneading condition derivation method, thereby obtaining a kneaded product. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a kneading condition derivation apparatus and method that can derive appropriate kneading conditions, and a method for producing a kneaded product. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram of a kneading condition extraction device according to one embodiment of the present invention. [Figure 2] This is a diagram illustrating the mixing process. [Figure 3] This graph shows both the measured and calculated values ​​of tensile strength S. [Figure 4] (a) is a diagram showing an example of calculation condition data, and (b) is an image of the calculation result data. [Figure 5] Figures (a) and (b) show examples of calculation results for the profile of the mixing conditions and the corresponding changes in tensile strength S and average temperature Tave of the mixed material. [Figure 6] This is a flowchart of a method for deriving mixing conditions according to one embodiment of the present invention. [Figure 7] (a) is a flowchart of the data acquisition process, and (b) is a flowchart of the relationship derivation process. [Figure 8] This is a flowchart of the process for deriving the mixing conditions. [Modes for carrying out the invention]

[0013] [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0014] Figure 1 is a schematic diagram of the kneading condition output device 1 according to this embodiment. The kneading condition output device 1 mixes two or more materials including resin. training This device derives the mixing conditions for obtaining a material. In this embodiment, the mixing condition deriving device 1 is composed of a personal computer.

[0015] As shown in Figure 1, the kneading condition extraction device 1 includes a control unit 2, a storage unit 3, a display unit 4, and an input device 5.

[0016] The control unit 2 is implemented by appropriately combining computing elements such as a CPU, memory, interfaces, software, storage devices, etc. In this embodiment, the control unit 2 includes a setting processing unit 21, a data acquisition processing unit 22, a relationship derivation processing unit 23, a kneading condition derivation processing unit 24, and a derivation data output processing unit 25. Details of each part will be described later.

[0017] The memory unit 3 is implemented by a predetermined storage area of ​​memory or a storage device. The display unit 4 is, for example, a liquid crystal display, and the input device 5 is, for example, a keyboard or mouse. The display unit 4 may be configured as a touch panel, and the display unit 4 may also serve as the input device 5. Furthermore, the display unit 4 and the input device 5 may be configured separately from the kneading condition derivation device 1 and be able to communicate with each other via wireless communication or the like. In this case, the display unit 4 or the input device 5 may be a mobile terminal such as a tablet or smartphone.

[0018] (Regarding the ingredients to be mixed) As will be described in detail later, this embodiment formulates the process by which, as mixing progresses, the powdered filler gradually disperses within the fluid resin, resulting in a uniform mixture. Therefore, this embodiment basically assumes the case of mixing a resin (polymer) with a powdered filler. However, it is not limited to this, and for example, if, in the initial stages of mixing, one resin exists in an island-like manner within the other resin, and as mixing progresses, the other resin gradually disperses within the first resin, the present invention can also be applied to the mixing of resins. Furthermore, as will be described in detail later, magnesium hydroxide was used as the filler in this embodiment, but it is not limited to this, and ceramic powder, metal powder, etc., may be used as the filler.

[0019] (Regarding parameters that serve as indicators of the progress of mixing) The inventors' research revealed a very strong correlation between the degree of mixing and the tensile strength of the mixture. For example, in the incomplete state of mixing, the resin and powder are unevenly mixed, resulting in a low tensile strength. As mixing progresses, the powder is finely crushed, increasing the contact area between the powder and the resin, and thus increasing the tensile strength of the mixture. When the powder is completely and uniformly dispersed in the resin through mixing, the tensile strength reaches its maximum value and saturates. Therefore, in this embodiment, the tensile strength of the mixture was used as a parameter to indicate the degree of mixing.

[0020] As shown in Figure 2, the mixing process can be considered in two stages: the mixing process and the dispersion process. In the mixing process, after preheating the mixing equipment, only the resin (polymer) is added and melted. Then, the powdered filler is added in two batches and stirred until it reaches a predetermined temperature or time, thereby uniting the resin and filler. In the subsequent dispersion process, the mixture is kneaded until it becomes uniform. This breaks down the filler into smaller pieces and disperses them within the resin, resulting in a uniform distribution of the filler within the resin.

[0021] In this embodiment, the progress of the mixing process in the dispersion process (i.e., how uniformly the filler is dispersed in the resin) is predicted from the change in the tensile strength of the mixed material. Then, the optimal mixing conditions are derived from the relationship between the mixing conditions and the change in the tensile strength of the mixed material.

[0022] In this embodiment, the tensile strength S is calculated using equations (1) and (2) shown in [Equation 1].

[0023]

number

[0024] Equation (1) shows the average temperature T of the mixture. ave This is the formula that represents the shear stress τ in formula (2), where T is the average temperature of the mixture. ave Since it is a function of the formula, the average temperature T of the kneaded mixture obtained from equation (1) ave By substituting this into equation (2), we can find the change in tensile strength S (dS / dt).

[0025] In equations (1) and (2), the rotor rotation speed N and the set temperature of the mixing device (hereinafter simply referred to as the set temperature) T * These are the mixing conditions. Then, C1 to C3 in equations (1) and (2) are the fitting coefficients. In order to determine these fitting coefficients C1 to C3, it is necessary to first perform test production by changing the mixing conditions and producing the mixed product, and then perform fitting using the measured values. Note that the average temperature T of the mixed product aveIt can be actually measured by measuring the temperature at the center of the kneaded material. The zero-shear rate η0, the temperature dependence coefficient b of viscosity, and the shear rate dependence coefficient n of viscosity can be obtained by measuring the viscosity of the kneaded material using a capillary rheometer. And for the tensile strength S, it can be obtained by taking out a part of the kneaded material, molding it into a No. 6 dumbbell shape, and conducting a tensile test. Specifically, a 1-mm-thick sheet is produced by press-molding the taken-out kneaded material. This sheet is irradiated with an electron beam at a dose of 7 [Mrad] for irradiation crosslinking. This crosslinked sheet is punched into a No. 6 dumbbell shape. And this No. 6 dumbbell test piece is subjected to a tensile test under the condition of 250 mm / min. The largest tensile strength S obtained after sufficient kneading is the maximum value S of the tensile strength max becomes.

[0026] Among the parameters of the above equations (1) and (2), η0, b, n, S max are values determined by the materials to be used. Therefore, even when calculating the subsequent change in the tensile strength S, the values obtained in advance through test production can be used. Thus, if the fitting coefficients C1 to C3 are obtained in advance, by using the above equations (1) and (2), the average temperature T * of the kneaded material and the change amount of the tensile strength S with respect to the kneading conditions (rotor rotation speed N and set temperature T ave ) can be obtained. Therefore, if the profile of the kneading conditions (rotor rotation speed N and set temperature T * ) over time from the start to the end of kneading is determined, the average temperature T ave of the kneaded material and the change (change over time from the start of kneading) of the tensile strength S when kneading is performed with the said profile can be obtained.

[0027] Figure 3 is a graph showing together the measured value of the tensile strength S and the calculated value of the tensile strength S obtained by the above equations (1) and (2). In Figure 3, the case where the rotor rotation speed N and the set temperature T * are constant is shown. As shown in Figure 3, the measured value and the calculated value are in good agreement, and it can be said that the tensile strength S (that is, the progress of kneading) can be accurately evaluated by the above equations (1) and (2).

[0028] (Setting processing unit 21) Returning to Figure 1, the various parts of the control unit 2 will be described in detail. The setting processing unit 21 performs setting processing for various settings of the kneading condition extraction device 1. The setting processing unit 21 can set various control-related information, such as the method of data acquisition by the data acquisition processing unit 22 and the date and time of data acquisition. In addition, the setting processing unit 21 can register, update, and delete various information stored in the storage unit 3. Input devices such as the input device 5 can be used to input various information.

[0029] (Data acquisition processing unit 22) The data acquisition processing unit 22 performs data acquisition processing (see Figure 7(a)) to acquire various data, which are actual measured values ​​obtained during test manufacturing, and store them in the storage unit 3. The data acquisition processing unit 22 associates the acquired data with each sample and registers it in the database 31. In this embodiment, the rotor rotation speed N and the set temperature T are acquired. * Mixing condition data 61, which includes data on the mixing conditions, and the average temperature T of the mixed material. ave Temperature data 62, which includes temperature data; viscosity data 63, which includes zero shear rate η0, viscosity temperature dependence coefficient b, and viscosity shear rate dependence coefficient n; tensile strength S and its maximum value S. max Tensile strength data 64, including the above, is acquired by the data acquisition processing unit 22. These various types of data may be input by the input device 5, or they may be input from an external device via a network or the like. The data acquisition processing unit 22 may also receive data other than those mentioned above, and the database 31 may contain data other than those mentioned above. Furthermore, the data acquisition processing unit 22 may have a function to display missing data, such as displaying the missing data on the display unit 4.

[0030] Furthermore, the data acquisition processing unit 22 also receives the calculation condition data 33, which will be described later, and stores it in the storage unit 3. Details of the calculation condition data 33 will be described later.

[0031] (Relational derivation processing unit 23) The relationship derivation processing unit 23 performs a relationship derivation process (see Figure 7(b)) to determine the relationship between the change in the tensile strength S of the kneaded material and the kneading conditions, based on the measured values ​​obtained in the test manufacturing, i.e., the various data registered in the database 31. In this embodiment, the set temperature T in the kneading apparatus is also important. * , and at least one of the rotor rotation speed N. Furthermore, the relationship derivation process corresponds to the relationship derivation process of the present invention.

[0032] More specifically, the relationship derivation processing unit 23 uses equations (1) and (2) above as equations that represent the relationship between the change in the tensile strength S of the compound and the compounding conditions, and derives fitting coefficients C1 to C3 in equations (1) and (2) based on measured values. The obtained fitting coefficients C1 to C3 are stored in the storage unit 3 as coefficient data 32.

[0033] (Kneading condition derivation processing unit 24) The kneading condition derivation processing unit 24 uses the relationships derived by the relationship derivation processing unit 23 to perform a kneading condition derivation process (see Figure 8) which derives a profile of the kneading conditions over time from the start of kneading to the end of kneading. Note that the kneading condition derivation process corresponds to the kneading condition derivation step of the present invention.

[0034] The mixing condition derivation processing unit 24 first calculates the change in the tensile strength S of the mixed material from the start of mixing for each of the profiles of multiple pre-set mixing conditions, where the mixing conditions are set at predetermined time intervals from the start of mixing. More specifically, the mixing condition derivation processing unit 24 performs the calculation using the calculation condition data 33 shown in Figure 4(a). In the calculation condition data 33, the average temperature T of the mixed material is calculated. ave The initial value of the tensile strength S, and multiple profiles of pre-set mixing conditions (No. 1 to X) are set, with mixing conditions set at predetermined time intervals from the start of mixing. Alternatively, the initial value may be omitted from the calculation condition data 33, and values ​​obtained from the temperature data 62 or tensile strength data 64 may be used as the initial value.

[0035] The kneading condition derivation processing unit 24 calculates the change in tensile strength S and the average temperature T of the kneaded material from equations (1) and (2) above for each calculation condition (profile of kneading conditions No. 1 to X). ave The change is determined. The obtained calculation result is stored in the storage unit 3 as calculation result data 34. An image diagram of the calculation result data 34 is shown in Figure 4(b).

[0036] Then, the kneading condition derivation processing unit 24 extracts a profile of kneading conditions that matches the pre-set derivation conditions from the profiles of multiple kneading conditions set in the calculation condition data 33, based on the calculation result data 34, and stores it in the storage unit 3 as derivation data 35. The derivation conditions are input in advance by an input device 5 or the like. For example, the derivation conditions may be, "When the tensile strength S is the maximum value S max The shortest time to reach this state," "Average temperature of the mixture T ave Examples include "the average temperature T of the mixture is below a predetermined value," and two or more conditions may be used in combination. For example, "the average temperature T of the mixture" ave When using the derivation condition "is below a predetermined value," the predetermined value can be determined based on the decomposition temperature of the resin, additives, and compounding agents used in the mixing process. For example, in the case of a compound using aluminum hydroxide with a decomposition temperature of approximately 200°C, the predetermined value may be set to 160°C.

[0037] In this embodiment, the kneading condition derivation unit 24 uses the calculation result data 34 to determine that the tensile strength S for each calculation condition is the maximum value S. max The time at which the value reaches 99% is extracted as a score, and the calculation condition that yields the best score ("Tensile strength S is at its maximum value S") is used. max The calculation condition that results in the shortest time of 99% of the value is defined as derived data 35. The specific content of the derivation conditions and the method for extracting profiles of mixing conditions that fit the derivation conditions are not particularly limited and can be selected as appropriate. Furthermore, there may be more than one mixing condition profile extracted as derived data 35.

[0038] As an example, the set temperature T of the mixing device *When the temperature is kept constant at 90°C and only the rotor rotation speed N is changed as a mixing condition, the tensile strength S reaches its maximum value S. max The profile of the kneading conditions obtained by the derivation condition "the shortest time at which the value is 99% of the value," and the corresponding tensile strength S and average temperature T of the kneaded material. ave The calculation results of the changes are shown in Figures 5(a) and (b). In this example, ethylene-vinyl acetate copolymer (EVA) and acid-modified polyolefin were used as the resin (polymer), magnesium hydroxide was used as the filler, and trimellillol propane acrylate (TMPT) was used as the crosslinking agent. 100 parts by mass of resin were mixed with 200 parts by mass of filler and 4 parts by mass of crosslinking agent. A TD6-25MDX manufactured by Toshin Corporation with a two-blade rotor attached was used as the mixing device.

[0039] By performing kneading with the rotor rotation speed N profile shown by the dashed lines in Figures 5(a) and (b), the tensile strength S rapidly increases to its maximum value S. max It can be seen that it is approaching this. As shown in the rotor speed N profiles in Figures 5(a) and (b), increasing the rotor speed N does not necessarily mean that mixing will be completed in a shorter time, and the optimal rotor speed N profile differs depending on the resin and filler used. This is because, for example, if the rotor speed N is increased too much, the temperature of the mixture will rise due to the heat generated by shear, which will lower the viscosity of the mixture and reduce the effect of stirring by the rotor rotation. In other words, the heat generated by shear and the resulting change in viscosity greatly affect the progress of mixing.

[0040] (Derived data output processing unit 25) The derived data output processing unit 25 performs derived data output processing to output the derived data 35 to an external device, such as the control device of the kneading equipment. The derived data output processing unit 25 may also be configured to present the derived data 35 to an administrator or the like by displaying it on the display unit 4. The derived data output processing unit 25 also outputs the tensile strength S and the average temperature T of the kneaded material corresponding to the derived data 35. aveThe calculation results may also be configured to be output or displayed.

[0041] (Method for deriving mixing conditions) Figure 6 is a flowchart of the method for deriving mixing conditions according to this embodiment. As shown in Figure 6, first, in step S1, a setting process is performed. In the setting process, for example, setting data is input from an input device 5, and the setting processing unit 21 performs various settings according to the input setting data, as well as data update processing associated with the various settings.

[0042] After the setup process in step S1, in step S2, the control unit 2 determines whether new data has been input. If it is determined to be No (N) in step S2, it returns (returns to step S1). If it is determined to be YES (Y) in step S2, the data acquisition process is performed in step S3.

[0043] In the data acquisition process of step S3, as shown in Figure 7(a), in step S31, the data acquisition processing unit 22 receives various data, namely the actual measured values ​​during the test manufacturing, i.e., the kneading condition data 61, temperature data 62, viscosity data 63, and tensile strength data 64. Then, in step S32, the data acquisition processing unit 22 associates the received data and registers it in the database 31 and stores it in the storage unit 3. After that, it returns.

[0044] After the data acquisition process in step S3, the relationship derivation process is performed in step S4. In the relationship derivation process, as shown in Figure 7(b), in step S41, various data in the database 31 are applied to the above equations (1) and (2) to perform fitting and derive fitting coefficients C1 to C3. Then, in step S42, the derived fitting coefficients C1 to C3 are stored in the storage unit 3 as coefficient data 32.

[0045] After the relationship derivation process in step S4, the kneading condition derivation process is performed in step S5. In the kneading condition derivation process, as shown in Figure 8, the calculation condition data 33 and the derivation conditions are input from the input device 5, etc. (step S51). In step S52, the kneading condition derivation processing unit 24 determines whether the calculation condition data 33 and the derivation conditions have been input. If it is determined to be No (N) in step S52, step S52 is repeated (i.e., it waits until the calculation condition data 33 is input). Note that the derivation conditions may be configured to be set in the setting process.

[0046] If the result in step S52 is Yes (Y), then in step S53, an initial value of 1 is assigned to the variable i, and then in step S54, the calculation conditions for the i-th (No. i) set in the calculation condition data 33 are calculated using equations (1) and (2) above to determine the tensile strength S and the average temperature T of the mixed material at each time interval from the start of mixing. ave The following is calculated. Then, in step S55, the kneading condition derivation processing unit 24 extracts the score set as the derivation condition for the i-th (No. i) calculation condition based on the obtained calculation result. In the illustrated example, "Tensile strength S is a predetermined value (maximum value S) max This shows the case where the time at which the value reached 99% of the target value is extracted as a score. Subsequently, in step S56, the kneading condition derivation processing unit 24 determines the tensile strength S and the average temperature T of the kneaded material. ave The calculation result and score are stored in the storage unit 3 as calculation result data 34.

[0047] Subsequently, in step S57, the kneading condition derivation processing unit 24 determines whether the variable i is equal to X (the number of the largest calculation condition). If it is determined to be No (N) in step S57, i is incremented in step S58 and the process returns to step S54, and steps S54 to S56 are repeated for each calculation condition. If it is determined to be Yes (Y) in step S57, in step S59, the best score (in this case, "the tensile strength S is the maximum value S) is determined. maxThe kneading condition profile for the calculation condition that has the smallest time (when the value is 99% of the result) is extracted and stored in the storage unit 3 as derived data 35. Then, the process returns and proceeds to step S6 in Figure 6.

[0048] In step S6, the derived data output processing is performed. In the derived data output processing, the derived data output processing unit 25 performs output processing such as outputting the derived data 35 to an external device or displaying it on the display unit 4. After that, it returns (returns to step S1).

[0049] (Method of manufacturing a kneaded product) In the method for producing a kneaded product according to this embodiment, the materials are mixed according to the kneading condition profile, i.e., derived data 35, derived by the kneading condition derivation method described in Figures 6 to 8, to obtain a kneaded product.

[0050] (modified version) In the above embodiment, the case in which the kneading condition derivation device 1 is configured as a personal computer was described, but it is not limited to this, and for example, the kneading condition derivation device 1 may be configured as a network device such as a server. In this case, the kneading condition derivation device 1 may be configured to communicate with a predetermined terminal device such as a data management terminal device and to receive various data from the terminal device. Alternatively, the device may be configured to transmit the derived data 35 derived by the kneading condition derivation device 1 to the terminal device and to display the derived data 35 on the terminal device.

[0051] Furthermore, although the above embodiment describes a case where the kneading condition extraction device 1 is composed of a single personal computer, etc., it is not limited to this, and for example, some of the functions of the kneading condition extraction device 1 may be installed on other personal computers, etc. In other words, the kneading condition extraction device 1 does not need to be composed of a single piece of hardware, and may be composed of multiple pieces of hardware.

[0052] Furthermore, in the above embodiment, a method was used in which calculation condition data 33 as shown in Figure 4(a) was set in advance and the optimal one was extracted from the set profile of multiple mixing conditions. However, the specific method for deriving the profile of the optimal mixing conditions is not limited to this. For example, it is also possible to derive the profile of the optimal mixing conditions by sequentially selecting the mixing condition (such as rotor rotation speed N) that maximizes the increase in tensile strength at predetermined time intervals from the start of mixing. In addition, the score of the derived conditions can be optimized (for example, "when the tensile strength S is at its maximum value S max As an optimization problem (where the time taken to reach this state is minimized), the optimal mixing condition profile may be derived through analysis using machine learning or the like.

[0053] (Operation and Effects of the Embodiment) As described above, the kneading condition derivation device 1 according to this embodiment includes a relationship derivation processing unit 23 that determines the relationship between the change in the tensile strength of the kneaded material and the kneading conditions based on measured values ​​obtained in test manufacturing, and a kneading condition derivation processing unit 24 that uses the relationship derived by the relationship derivation processing unit 23 to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading.

[0054] This makes it possible to derive appropriate mixing conditions (mixing condition profiles) through numerical calculations. As a result, it becomes unnecessary to repeatedly prototype and evaluate to determine mixing conditions, as was done in the past, thus reducing the cost and accelerating material development.

[0055] (Summary of the embodiments) Next, the technical concept understood from the embodiments described above will be described using the reference numerals and other symbols from the embodiments. However, the reference numerals and other symbols in the following description are not limited to the components in the claims that are specifically shown in the embodiments.

[0056] [1] Mix two or more materials including resin training An apparatus for determining the mixing conditions when obtaining a substance, the mixing trainingBy changing the conditions, the aforementioned mixture training A kneading condition derivation device (1) comprises: a relationship derivation processing unit (23) that determines the relationship between the change in the tensile strength of the kneaded material and the kneading conditions based on measured values ​​obtained in a test manufacturing process for manufacturing a material; and a kneading condition derivation processing unit (24) that uses the relationship derived by the relationship derivation processing unit (23) to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading.

[0057] [2] A kneading condition deriving device (1) according to [1], which derives the kneading conditions when mixing a resin with a powdered filler.

[0058] [3] The kneading condition deriving device (1) according to [1], wherein the kneading conditions are at least one of the set temperature and rotor rotation speed in the kneading device.

[0059] [4] The relationship derivation processing unit (23) uses equations (1) and (2) shown in [Equation 2] as equations representing the relationship between the change in the tensile strength of the compound and the compounding conditions, and determines the fitting coefficients C1 to C3 in equations (1) and (2) based on the measured values, as described in [1].

[0060]

number

[0061] [5] The kneading condition derivation processing unit (24) calculates the change in the tensile strength of the kneaded material from the start of kneading for each of the profiles of a plurality of kneading conditions, for which the kneading conditions are set in advance at predetermined time intervals from the start of kneading, and based on the calculation results, extracts a profile of kneading conditions that matches the predetermined derivation conditions from the profiles of the plurality of kneading conditions, as described in [1].

[0062] [6] Mix two or more materials including resin training A method for deriving the mixing conditions when obtaining a substance, the mixing training By changing the conditions, the aforementioned mixture trainingA method for deriving mixing conditions, comprising: a relationship derivation step of determining the relationship between the change in tensile strength of the kneaded material and the mixing conditions based on measured values ​​obtained in a test manufacturing process for manufacturing a material; and a mixing condition derivation step of deriving a profile of the mixing conditions over time from the start of mixing to the end of mixing using the relationship derived in the relationship derivation step.

[0063] A method for producing a kneaded product, comprising mixing the materials according to the kneading condition profile derived by the kneading condition derivation method described in [7].

[0064] (Note) Although embodiments of the present invention have been described above, the embodiments described above do not limit the invention as defined in the claims. Furthermore, it should be noted that not all combinations of features described in the embodiments are necessarily essential for solving the problem of the invention. In addition, the present invention can be implemented with appropriate modifications without departing from its spirit. [Explanation of Symbols]

[0065] 1... Mixing condition extraction device 2…Control Unit 3...Storage section 4...Indicator 5…Input device 21…Setting Processing Unit 22...Data acquisition processing unit 23...Relational Derivation Processing Unit 24... Mixing condition derivation processing unit 25... Derived Data Output Processing Unit 31…Database 32…Coefficient data 33…Calculation condition data 34…Calculation result data 35…Derived data (profile of mixing conditions)

Claims

1. An apparatus for determining the kneading conditions when mixing two or more materials, including resin, to obtain a kneaded product, A relationship derivation processing unit determines the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, based on the tensile strength of the kneaded product produced in a test manufacturing process in which the kneading conditions are changed. The system includes a kneading condition derivation processing unit that uses the relationships derived by the relationship derivation processing unit to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading, The relationship derivation processing unit uses equations (1) and (2) shown in [Equation 1] as equations representing the relationship between the change in the tensile strength of the kneaded material and the kneading conditions, and calculates the fitting coefficients C1 to C3 in equations (1) and (2) based on the tensile strength of the kneaded material. [Math 1] Mixing condition extraction device.

2. An apparatus for determining the kneading conditions when mixing two or more materials, including resin, to obtain a kneaded product, A relationship derivation processing unit determines the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, based on the tensile strength of the kneaded product produced in a test manufacturing process in which the kneading conditions are changed. The system includes a kneading condition derivation processing unit that uses the relationships derived by the relationship derivation processing unit to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading, The kneading condition derivation processing unit calculates the change in the tensile strength of the kneaded material from the start of kneading for each of the multiple kneading condition profiles, where the kneading conditions are set in advance at predetermined time intervals from the start of kneading, and based on the calculation results, extracts a kneading condition profile from the multiple kneading condition profiles that matches the pre-set derivation conditions. Mixing condition extraction device.

3. To derive the mixing conditions when combining resin and powdered filler. The kneading condition extraction device according to claim 1 or 2.

4. A method for determining the mixing conditions when obtaining a compound by mixing two or more materials including a resin, A relationship derivation step is performed to determine the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, based on the tensile strength of the kneaded product produced in a test manufacturing process in which the kneading conditions are changed. The system includes a kneading condition derivation step, which uses the relationship derived in the relationship derivation step to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading, The aforementioned relationship derivation step uses equations (1) and (2) shown in [Equation 1] as equations that represent the relationship between the change in the tensile strength of the compound and the compounding conditions, and determines the fitting coefficients C1 to C3 in equations (1) and (2) based on the tensile strength of the compound. [Math 1] Method for deriving mixing conditions.

5. A method for determining the mixing conditions when obtaining a compound by mixing two or more materials including a resin, A relationship derivation step is performed to determine the relationship between the change in the tensile strength of the kneaded product and the kneading conditions, based on the tensile strength of the kneaded product produced in a test manufacturing process in which the kneading conditions are changed. The system includes a kneading condition derivation step, which uses the relationship derived in the relationship derivation step to derive a profile of the kneading conditions over time from the start of kneading to the end of kneading, The aforementioned kneading condition derivation step involves calculating the change in the tensile strength of the kneaded material from the start of kneading for each of the profiles of multiple kneading conditions, where the kneading conditions are set in advance at predetermined time intervals from the start of kneading, and based on the calculation results, extracting a profile of kneading conditions that matches the pre-set derivation conditions from the multiple profiles of kneading conditions. Method for deriving mixing conditions.

6. The materials are mixed according to the profile of the kneading conditions derived by the kneading condition derivation method according to claim 4 or 5. A method for producing a kneaded product.

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