A high-strength polydicyclopentadiene composite material and production process

Abstract

The invention discloses a high-strength polydicyclopentadiene composite material and a production process, comprising: obtaining the injection rate of a two-component high-molecular-weight dicyclopentadiene solution of a group A and a group B during the injection molding process, calculating the dosage ratio of the group A to the group B; judging whether the dosage ratio is in the injection safety dosage value range; and obtaining a dosage qualified signal; obtaining an injection pressure value in a mold, and performing injection molding on the two-component high-molecular-weight dicyclopentadiene solution; obtaining a molding temperature value of the polydicyclopentadiene composite material after injection molding, and calculating and obtaining a cooling rate value after injection molding; cooling the polydicyclopentadiene composite material based on the cooling rate value, and obtaining a strength value after cooling; if the strength value is greater than or equal to a strength threshold, generating an injection qualified signal, thereby solving the problem of low strength of the polydicyclopentadiene composite material during the injection molding process, and maximizing the injection molding rate and production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of composite materials, and in particular to a high-strength polydicyclopentadiene composite material and a production process. Background Art

[0002] Polydicyclopentadiene (PDCPD) is a new type of engineering plastic, which is polymerized by dicyclopentadiene (DCPD) under the action of a ring-opening metathesis catalyst. At present, the catalyst system used to prepare polydicyclopentadiene includes tungsten-molybdenum complexes or molybdenum and ruthenium carbene catalysts. The process used is reaction injection molding (RIM), which has the advantages of fast molding speed, high efficiency and low energy consumption. It can be used to manufacture various large-scale thin-walled and complex-shaped parts.

[0003] The PDCPD material processed by RIM technology has excellent mechanical properties, thermal stability and anti-aging properties, and can be widely used in automotive parts, industrial equipment, medical devices, etc.

[0004] The RIM process conventionally uses two materials A and B mixed and injected in a 1:1 ratio. Both A and B liquids are low-viscosity liquids. A material contains DCPD, activator and additives, and B material contains DCPD, catalyst and additives. The formulated raw materials are first mixed evenly to form a mixed slurry and then injected into the molding mold.

[0005] In the existing RIM process, during the injection molding process of the polydicyclopentadiene composite material, the temperature of the mold and the mold core during the injection molding process is unstable, which is easy to affect the strength of the polydicyclopentadiene composite material. At the same time, since the continuous molding process easily leads to different molding temperatures of the polydicyclopentadiene composite material, if the same cooling rate is used, it is easy to cause inconsistent strength and unqualified conditions. Therefore, it is necessary to regulate the injection molding temperature data, pressure and cooling time during the injection molding process so that the strength of the polydicyclopentadiene composite material can meet the standard. Summary of the invention

[0006] The object of the present invention is to provide a high-strength polydicyclopentadiene composite material and a production process to solve the above-mentioned background problems.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A production process of a high-strength polydicyclopentadiene composite material, comprising:

[0009] Obtain the injection rates of the two-component high molecular weight dicyclopentadiene solutions of group A and group B during the injection molding process, and mark them as VA and VB respectively; calculate the dosage ratio PL of group A and group B;

[0010] Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb]; obtain a dosage qualified signal;

[0011] Get the initial temperature value of the mold, including the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0;

[0012] Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb]; obtain an injection signal;

[0013] Obtain the injection pressure value PML in the mold, and perform injection molding on the two-component high molecular weight dicyclopentadiene solution; calculate and obtain the temperature curing reference value WGT; obtain the molding temperature value XT of the polydicyclopentadiene composite material after injection molding, and calculate the cooling rate value LQv after injection molding through the temperature and pressure cooling model;

[0014] Cooling the polydicyclopentadiene composite material based on the cooling rate value LQv, and obtaining the strength value YD after cooling;

[0015] If the intensity value YD is greater than or equal to the intensity threshold YDy, an injection qualified signal is generated.

[0016] As a further solution of the present invention: by Calculate the dosage ratio PL of group A and group B per unit time t.

[0017] As a further solution of the present invention: judging whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb];

[0018] If the dosing ratio PL is within the injection safety dosing range [ABa, ABb], a dosing qualified signal is generated;

[0019] If the dosage ratio PL is within the injection safety dosage range [ABa, ABb], a dosage optimization signal is generated; then the dosage ratios of the two groups of high molecular weight dicyclopentadiene solutions, group A and group B, are adjusted.

[0020] As a further solution of the present invention: judging whether the initial temperature value RM0 of the male mold and the initial temperature value YM0 of the female mold are within the mold temperature range [TMa, TMb];

[0021] If the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are both within the mold temperature range [TMa, TMb], an injection signal is generated;

[0022] If the initial temperature value RM0 of the male mold and / or the initial temperature value YM0 of the female mold is not within the mold temperature value range [TMa, TMb], a temperature adjustment signal is generated.

[0023] As a further solution of the present invention: the temperature curing reference value WGT is obtained as follows:

[0024] The injection molding cycle Tzq is divided into time units e, and the time point is marked as i. The mold temperature state value set is obtained, including the male mold temperature value, the female mold temperature value and the core temperature value, and marked as RM i, YM i and XMi respectively; where i is 1, 2, 3...;

[0025] Calculate and obtain the different values ​​of cavity temperature at different time points within the injection cycle Tzq, and mark them as WYQ i;

[0026] The standard deviation of the cavity temperature abnormal value WYQ i is calculated to obtain the influence factor WYYY of the male mold, female mold and core on the cavity temperature;

[0027] Calculate and obtain the mold temperature deviation values ​​at different time points within the injection cycle Tzq and mark them as PCM i;

[0028] Obtain the maximum temperature deviation in the mold temperature deviation value PCM i and mark it as PCMax;

[0029] pass The temperature curing reference value WGT is calculated and obtained.

[0030] As a further solution of the present invention: the cavity temperature difference value WYQ i is the temperature difference between the mold and the core during the injection molding process, that is, during the injection molding process, the temperature in the cavity is affected by the inner surface of the mold and the outer surface of the core. Therefore, the cavity temperature difference value WYQ i is calculated as follows:

[0031] As a further solution of the present invention: the mold temperature deviation value PCM i is calculated as follows: PCM i=|RM i-YM i|.

[0032] As a further solution of the present invention: the method of obtaining the temperature pressure cooling model is:

[0033] A1: Obtain the injection molding temperature history values ​​XTs, temperature curing benchmark history values ​​WGTs, in-mold injection pressure history values ​​PMLs and cooling rate history values ​​LQvs of several groups of polydicyclopentadiene composite materials in the qualified strength value state during the historical injection molding process, as well as the strength history values ​​YDs after injection molding;

[0034] A2: The data of several groups of historical injection molding process strength values ​​under qualified conditions in A1 are respectively entered into the formula: In the calculation, the pressure influence factor γ, the velocity influence factor β and the correction coefficient η are obtained;

[0035] A3: Based on the pressure influence factor γ and the rate influence factor β, the temperature-pressure cooling model can be obtained:

[0036]

[0037] As a further solution of the present invention: comparing the intensity value YD with the intensity threshold value YDy;

[0038] If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated;

[0039] If the intensity value YD is less than the intensity threshold value YDy, an injection control signal is generated; based on the injection control signal, the injection pressure value in the mold is increased and / or the cooling rate value is decreased; and the temperature pressure cooling model is updated.

[0040] As a further solution of the present invention: a high-strength polydicyclopentadiene composite material is prepared by the above production process.

[0041] Beneficial effects of the present invention:

[0042] In the present invention, the dosage ratio of the two groups of high molecular weight dicyclopentadiene solutions, group A and group B, is calculated to meet the requirements of injection molding; the accuracy of the two groups of high molecular weight dicyclopentadiene solutions is ensured, and the qualified rate of the injection molding of the polydicyclopentadiene composite material is ensured; at the same time, by measuring the temperature of the mold, the situation in which the temperature difference between the male mold, the female mold and the mold core has an excessive deviation during the injection molding process is avoided;

[0043] During the injection molding process, the data at each time point within the injection time is monitored, and the injection data is adjusted based on the injection control signal finally obtained, the injection pressure value in the mold is increased to increase the strength value of the polydicyclopentadiene composite material to a qualified value, or the cooling rate value is reduced to increase the strength value of the polydicyclopentadiene composite material to a qualified value; increasing the injection pressure in the mold, on the one hand, will not affect the duration of the entire injection molding, and can effectively ensure the injection imaging rate; on the other hand, the operation of regulating the injection pressure in the mold is rapid, and the strength value of the polydicyclopentadiene composite material after regulation can be quickly obtained;

[0044] When the injection pressure in the mold increases to a certain value, the strength value of the injection-molded polydicyclopentadiene composite material will decrease. At this time, it is necessary to reduce the cooling rate of the polydicyclopentadiene composite material to further increase the strength value of the polydicyclopentadiene composite material; that is, the problem of low strength of the polydicyclopentadiene composite material during the injection molding process is solved, and the injection molding rate is maximized to ensure production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] Figure 1 is a schematic diagram of the process flow of the second embodiment of the present invention;

[0047] Figure 2 It is a schematic diagram of the process flow of embodiment 1 of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0049] Embodiment 1

[0050] See also Figure 2 As shown, the present invention is a production process of a high-strength polydicyclopentadiene composite material, comprising:

[0051] Step 1: adding dicyclopentadiene to a reactor, and then adding a catalyst and a stabilizer in a preset ratio; controlling the reaction temperature, pressure and time to perform a polymerization reaction;

[0052] Step 2: After the polymerization reaction is completed, refining is performed to obtain high molecular weight dicyclopentadiene; wherein the refining process includes filtration, distillation, extraction, etc.;

[0053] Step 3: injecting two groups of high molecular weight dicyclopentadiene containing different component reagents into the mold cavity through a high-pressure injection device and forming;

[0054] It should be noted that in this step, the two groups of high molecular weight dicyclopentadiene containing different component reagents are: group A high molecular weight dicyclopentadiene, activator and additives, group B high molecular weight dicyclopentadiene, catalyst and additives;

[0055] Specifically, the injection rates of the two-component high molecular weight dicyclopentadiene solution of group A and group B during the injection molding process are obtained and marked as VA and VB respectively; the dosage ratio PL of group A to group B is calculated;

[0056] Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb]; obtain a dosage qualified signal;

[0057] Get the initial temperature value of the mold, including the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0;

[0058] Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb]; obtain an injection signal;

[0059] Obtain the injection pressure value PML in the mold, and perform injection molding on the two-component high molecular weight dicyclopentadiene solution; calculate and obtain the temperature curing reference value WGT; obtain the molding temperature value XT of the polydicyclopentadiene composite material after injection molding, and calculate the cooling rate value LQv after injection molding through the temperature and pressure cooling model;

[0060] Cooling the polydicyclopentadiene composite material based on the cooling rate value LQv, and obtaining the strength value YD after cooling;

[0061] If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated;

[0062] This method not only solves the problem of low strength of polydicyclopentadiene composite materials during injection molding, but also maximizes the injection molding rate and production efficiency. At the same time, after adjusting the injection pressure and cooling rate, the temperature pressure cooling model is updated based on the new data after adjustment to ensure the efficiency and qualification rate of subsequent production.

[0063] Step 4: demoulding the fully cured polydicyclopentadiene to take out the polydicyclopentadiene composite material.

[0064] Embodiment 2

[0065] Reference Figure 1 As shown, a production process of a high-strength polydicyclopentadiene composite material comprises:

[0066] Step W1: obtaining the injection rates of the two-component high molecular weight dicyclopentadiene solutions of group A and group B during the injection molding process, and marking them as VA and VB respectively;

[0067] Step W2: Pass Calculate the dosage ratio PL of group A and group B within unit time t;

[0068] Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb];

[0069] If the dosing ratio PL is within the injection safety dosing range [ABa, ABb], a dosing qualified signal is generated;

[0070] If the dosing ratio PL is within the injection safety dosing range [ABa, ABb], a dosing optimization signal is generated;

[0071] Step W3: Obtaining the initial temperature values ​​of the mold, including the initial temperature value RM0 of the male mold and the initial temperature value YM0 of the female mold;

[0072] Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb];

[0073] If the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are both within the mold temperature range [TMa, TMb], an injection signal is generated;

[0074] If the initial temperature value RM0 of the male mold and / or the initial temperature value YM0 of the female mold are not within the mold temperature range [TMa, TMb], a temperature adjustment signal is generated;

[0075] Step W4: based on the initial information of the injection signal, the injection pressure value PML in the mold is obtained, and the two-component high molecular weight dicyclopentadiene solution is injection molded;

[0076] Step W5: Calculate and obtain the temperature curing reference value WGT based on the mold temperature state value set;

[0077] Step W6: Obtain the molding temperature value XT of the polydicyclopentadiene composite material after injection molding, and use the warm pressure cooling model Calculate and obtain the cooling rate value LQv after injection molding; where γ is the pressure influence factor, β is the rate influence factor, η is the correction coefficient; YDL is the theoretical strength value; at this time, when the cooling rate value LQv is calculated, the theoretical strength value YDL should be greater than the strength threshold value YDy;

[0078] Step W7: Cooling the polydicyclopentadiene composite material based on the cooling rate value LQv, and obtaining the strength value YD after cooling;

[0079] and compare the intensity value YD with the intensity threshold value YDy;

[0080] If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated;

[0081] If the intensity value YD is less than the intensity threshold value YDy, an injection control signal is generated; and the temperature pressure cooling model is updated;

[0082] Based on the injection control signal, the injection pressure value in the mold is increased to increase the strength value of the polydicyclopentadiene composite material to a qualified value, or the cooling rate value is reduced to increase the strength value of the polydicyclopentadiene composite material to a qualified value; that is, the problem of low strength of the polydicyclopentadiene composite material during the injection molding process is solved, and the injection molding rate is maximized to ensure production efficiency;

[0083] The invention effectively solves the problem that the molding temperature of the polydicyclopentadiene composite material is inconsistent during continuous processing during the injection molding process, resulting in inconsistent strength at the same cooling rate, thereby ensuring the strength of the polydicyclopentadiene composite material.

[0084] Embodiment 3

[0085] Based on the injection molding process of two groups of reagents containing different components in the above embodiment, the proportion weight of the two components of high molecular weight dicyclopentadiene solution of group A and group B is adjusted for injection molding;

[0086] S01: Obtain the injection rates of the two-component high molecular weight dicyclopentadiene solutions of group A and group B during the injection molding process, and mark them as VA and VB respectively;

[0087] S02: Passed Calculate the dosage ratio PL of group A and group B within unit time t;

[0088] Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb];

[0089] It should be noted that the optimal ratio of the high molecular weight dicyclopentadiene solution of group A to group B is 1:1. To ensure stability during injection molding, the deviation between the high molecular weight dicyclopentadiene solution of group A and group B does not exceed 5%; that is, in the value range [ABa, ABb], ABa is 0.95 and ABb is 1.05;

[0090] If the dosing ratio PL is within the injection safety dosing value range [ABa, ABb], a dosing qualified signal is generated; then S03 is executed;

[0091] If the dosage ratio PL is within the injection safety dosage range [ABa, ABb], a dosage optimization signal is generated; then the dosage ratio of the two groups of high molecular weight dicyclopentadiene solutions, group A and group B, needs to be adjusted to meet the requirements of injection molding; the accuracy of the two groups of high molecular weight dicyclopentadiene solutions is ensured, and the qualified rate of injection molding of polydicyclopentadiene composite materials is further ensured;

[0092] S03: Obtaining the initial temperature value of the mold, including the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0;

[0093] Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb];

[0094] If the initial temperature value RM0 of the male mold and the initial temperature value YM0 of the female mold are both within the mold temperature range [TMa, TMb], an injection signal is generated; S04 is executed;

[0095] If the initial temperature value RM0 of the male mold and / or the initial temperature value YM0 of the female mold are not within the mold temperature range [TMa, TMb], a temperature adjustment signal is generated;

[0096] By measuring the temperature of the mold, it is possible to avoid excessive deviation in the temperature difference between the male mold, female mold and mold core during the injection molding process;

[0097] S04: Based on the initial information under the injection signal, the injection pressure value PML in the mold is obtained, and the two-component high molecular weight dicyclopentadiene solution is injection molded. It should be noted that the initial information is the injection rate of the qualified two-component high molecular weight dicyclopentadiene solution of group A and group B during the injection process, that is, VA and VB, and also includes the qualified initial temperature value RM0 of the positive mold and the initial temperature value YM0 of the negative mold;

[0098] S05: Divide the injection molding cycle Tzq by time e as the unit time, and mark the time point as i, obtain the mold temperature state value set, including the male mold temperature value, the female mold temperature value and the core temperature value, and mark them as RM i, YM i and XM i respectively; where i is 1, 2, 3, ...;

[0099] S06: Calculate and obtain a temperature curing reference value WGT based on the mold temperature state value set;

[0100] Specifically, they include:

[0101] S061: Calculate and obtain the different values ​​of cavity temperature at different time points within the injection cycle Tzq, and mark them as WYQ i;

[0102] Among them, the cavity temperature difference WYQ i is the temperature difference between the mold and the core during the injection molding process. That is, during the injection molding process, the temperature in the cavity is affected by the inner surface of the mold and the outer surface of the core. Therefore, the calculation method of the cavity temperature difference WYQ i is: That is, the mold cavity temperature difference can reflect the changes in the temperature in the mold cavity during the injection molding process due to the influence of the male mold, female mold and mold core;

[0103] Furthermore, the standard deviation of the cavity temperature abnormal value WYQ i is calculated to obtain the influence factor WYYY of the male mold, female mold and core on the cavity temperature;

[0104] S062: Calculate and obtain mold temperature deviation values ​​at different time points within the injection cycle Tzq, and mark them as PCM i;

[0105] The calculation method of the mold temperature deviation value PCM i is: PCM i = |RM i - YM i|;

[0106] S063: obtaining the maximum temperature deviation value among the mold temperature deviation values ​​PCM i and marking it as PCMax; it should be noted that in this step, the mold includes a male mold and a female mold;

[0107] S064: Pass Calculate and obtain the temperature curing reference value WGT;

[0108] S07: Obtain the molding temperature value XT of the polydicyclopentadiene composite material after injection molding, and use the warm pressure cooling model Calculate and obtain the cooling rate value LQv after injection molding; where γ is the pressure influence factor, β is the rate influence factor, η is the correction coefficient; YDL is the theoretical strength value; at this time, when the cooling rate value LQv is calculated, the theoretical strength value YDL should be greater than the strength threshold value YDy;

[0109] S08: Cooling the polydicyclopentadiene composite material based on the cooling rate value LQv, and obtaining a strength value YD after cooling;

[0110] and compare the intensity value YD with the intensity threshold value YDy;

[0111] If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated;

[0112] If the intensity value YD is less than the intensity threshold value YDy, an injection control signal is generated; and the temperature pressure cooling model is updated;

[0113] S09: based on the injection control signal, increasing the injection pressure value in the mold so that the strength value of the polydicyclopentadiene composite material is increased to a qualified value, or reducing the cooling rate value so that the strength value of the polydicyclopentadiene composite material is increased to a qualified value;

[0114] It should be noted that increasing the injection pressure in the mold will not affect the duration of the entire injection molding process, and can effectively ensure the injection imaging rate. On the other hand, the operation of adjusting the injection pressure in the mold is rapid, and the strength value of the polydicyclopentadiene composite material after adjustment can be quickly obtained.

[0115] When the injection pressure in the mold increases to a certain value, the strength value of the injection-molded polydicyclopentadiene composite material will decrease. At this time, it is necessary to reduce the cooling rate of the polydicyclopentadiene composite material to further increase the strength value of the polydicyclopentadiene composite material; that is, the problem of low strength of the polydicyclopentadiene composite material during the injection molding process is solved, and the injection molding rate is maximized to ensure production efficiency;

[0116] It effectively solves the problem of inconsistent strength at the same cooling rate caused by inconsistent molding temperature of polydicyclopentadiene composite materials during continuous processing during injection molding, thus ensuring the strength of polydicyclopentadiene composite materials.

[0117] At the same time, after the injection pressure and cooling rate are adjusted, the temperature pressure cooling model is updated based on the new data after adjustment to ensure the efficiency and qualification rate of subsequent production.

[0118] Embodiment 4

[0119] The temperature-pressure-cooling model is obtained as follows:

[0120] A1: Obtain the injection molding temperature history values ​​XTs, temperature curing benchmark history values ​​WGTs, in-mold injection pressure history values ​​PMLs and cooling rate history values ​​LQvs of several groups of polydicyclopentadiene composite materials in the qualified strength value state during the historical injection molding process, as well as the strength history values ​​YDs after injection molding;

[0121] A2: The data of several groups of historical injection molding process strength values ​​under qualified conditions in A1 are respectively entered into the formula: The pressure influence factor γ, the velocity influence factor β and the correction coefficient η are obtained by calculation;

[0122] A3: Based on the pressure influence factor γ and the rate influence factor β, the temperature-pressure cooling model can be obtained: Among them, YDL is the theoretical strength value.

[0123] It should be noted that in the temperature pressure cooling model of this embodiment, the calculation and processing process of each data is de-scaled and quantified, and the model is constructed by fitting the historical data in the production process;

[0124] By constructing a temperature-pressure cooling model, an accurate basis can be established for determining the cooling rate and in-mold injection pressure in the injection molding of polydicyclopentadiene composite materials, further ensuring the strength of the injection molding of polydicyclopentadiene composite materials and improving the production efficiency of injection molding.

[0125] Embodiment 5

[0126] A high-strength polydicyclopentadiene composite material is prepared by the production process in the above embodiment.

[0127] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A production process for a high-strength polydicyclopentadiene composite material, characterized in that: include: Obtain the injection rates of the two-component high molecular weight dicyclopentadiene solutions of group A and group B during the injection molding process, and mark them as VA and VB respectively; calculate the dosage ratio PL of group A and group B; Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb]; obtain a dosage qualified signal; Get the initial temperature value of the mold, including the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0; Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb]; obtain an injection signal; Obtaining the injection pressure value PML in the mold, and performing injection molding on the two-component high molecular weight dicyclopentadiene solution; The temperature curing reference value WGT is calculated; the molding temperature value XT of the polydicyclopentadiene composite material after injection molding is obtained, and the cooling rate value LQv after injection molding is calculated by the temperature-pressure cooling model; Cooling the polydicyclopentadiene composite material based on the cooling rate value LQv, and obtaining the strength value YD after cooling; If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated; The temperature curing reference value WGT is obtained as follows: The injection molding cycle Tzq is divided into time units e, and the time point is marked as i. The mold temperature state value set is obtained, including the male mold temperature value, the female mold temperature value and the core temperature value, and marked as RMi, YMi and XM i respectively; where i is 1, 2, 3...; Calculate and obtain the different values ​​of cavity temperature at different time points within the injection cycle Tzq, and mark them as WYQ i; The standard deviation of the cavity temperature abnormal value WYQ i is calculated to obtain the influence factor WYYY of the male mold, female mold and core on the cavity temperature; Calculate and obtain the mold temperature deviation values ​​at different time points within the injection cycle Tzq and mark them as PCMi; Obtain the maximum temperature deviation in the mold temperature deviation value PCMi and mark it as PCMax; pass Calculate and obtain the temperature curing reference value WGT; The temperature-pressure-cooling model is obtained as follows: A1: Obtain the injection molding temperature history values ​​XTs, temperature curing benchmark history values ​​WGTs, in-mold injection pressure history values ​​PMLs and cooling rate history values ​​LQvs of several groups of polydicyclopentadiene composite materials in the qualified strength value state during the historical injection molding process, as well as the strength history values ​​YDs after injection molding; A2: The data of several groups of historical injection molding process strength values ​​under qualified conditions in A1 are respectively entered into the formula: In the calculation, the pressure influence factor γ, the velocity influence factor β and the correction coefficient η are obtained; A3: Based on the pressure influence factor γ and the rate influence factor β, the temperature-pressure cooling model can be obtained: Among them, YDL is the theoretical strength value.

2. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: pass Calculate the dosage ratio PL of group A and group B per unit time t.

3. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: Determine whether the dosage ratio PL is within the injection safety dosage range [ABa, ABb]; If the dosing ratio PL is within the injection safety dosing range [ABa, ABb], a dosing qualified signal is generated; If the dosage ratio PL is within the injection safety dosage range [ABa, ABb], a dosage optimization signal is generated; then the dosage ratios of the two groups of high molecular weight dicyclopentadiene solutions, group A and group B, are adjusted.

4. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: Determine whether the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are within the mold temperature range [TMa, TMb]; If the initial temperature value of the male mold RM0 and the initial temperature value of the female mold YM0 are both within the mold temperature range [TMa, TMb], an injection signal is generated; If the initial temperature value RM0 of the male mold and / or the initial temperature value YM0 of the female mold is not within the mold temperature value range [TMa, TMb], a temperature adjustment signal is generated.

5. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: The cavity temperature difference WYQ i is the temperature difference between the mold and the core during the injection molding process. That is, during the injection molding process, the temperature in the cavity is affected by the inner surface of the mold and the outer surface of the core. Therefore, the calculation method of the cavity temperature difference WYQ i is:

6. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: The calculation method of mold temperature deviation value PCM i is: PCM i = | RM i-YM i|.

7. The production process of a high-strength polydicyclopentadiene composite material according to claim 1, characterized in that: Compare the intensity value YD with the intensity threshold value YDy; If the intensity value YD is greater than or equal to the intensity threshold value YDy, an injection qualified signal is generated; If the intensity value YD is less than the intensity threshold value YDy, an injection control signal is generated; based on the injection control signal, the injection pressure value in the mold is increased and / or the cooling rate value is decreased; and the temperature pressure cooling model is updated.

8. A high-strength polydicyclopentadiene composite material, characterized in that: The high-strength polydicyclopentadiene composite material is prepared by the production process described in any one of claims 1 to 7.

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