A pultrusion method for glass fiber synthetic profile

Abstract

The present invention discloses a pultrusion molding method for glass fiber synthetic profiles, which relates to the field of glass fiber synthesis technology, and includes the following molding method: the prepared glass fiber yarn is soaked through the resin cylinder, the yarn enters the mold after soaking and then heated, the glass fiber yarn and the resin react chemically at high temperature, and the profile formed by the mold is pulled out of the mold by a traction machine and cut according to the required length. The present invention has the ability to accurately control key process parameters such as resin impregnation depth, mold temperature, and traction speed, and uses accurate calculations to optimize and adjust parameters, thereby achieving stability and controllability of the impregnation and curing process, thereby not only improving the quality and dimensional accuracy of the product, but also reducing the scrap rate and production cost. At the same time, the stable process can also improve production efficiency and consistency of product quality, and achieve accurate adjustment of parameters such as pressure parameters, thereby improving the stability and consistency of product quality.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber synthesis, in particular to a pultrusion molding method for glass fiber synthetic profiles. Background Art

[0002] As a high-performance composite material, glass fiber composite profiles are widely used in the fields of construction, transportation, electricity, communications, etc. due to their light weight, high strength, corrosion resistance, and good weather resistance. Pultrusion is one of the main production processes for glass fiber composite profiles. It forms profiles with specific shapes and sizes by impregnating glass fiber yarn with resin and curing it at high temperature in a mold.

[0003] However, in the existing pultrusion method, during the impregnation and curing process, the control of key process parameters such as resin impregnation depth, mold temperature, and traction speed is crucial to product quality and dimensional accuracy. However, the existing method may rely on manual experience and simple mechanical equipment to adjust parameters, resulting in inaccurate parameter control and unstable product quality. There may be a lack of accurate calculation formulas to guide the optimization of these parameters, making it difficult for the impregnation and curing process to reach the optimal state, affecting the product's qualification rate and production efficiency. In addition, during the pultrusion process, the selection and optimization of key process parameters may lack accurate calculation support, and it is impossible to accurately adjust the extrusion parameters, resin and extrusion material ratio, etc. according to product performance requirements, resulting in unstable product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a pultrusion method for glass fiber synthetic profiles, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a pultrusion molding method of a glass fiber synthetic profile, comprising the following molding method:

[0006] Step 1: Prepare the raw materials; select multiple strands of glass fiber yarn, adjust the unsaturated resin to a suitable color according to the color selected by the user and put it into the resin cylinder, then add the curing agent and accelerator to ensure that the resin can be quickly cured during the molding process;

[0007] Step 2, soaking the yarn; soaking the prepared glass fiber yarn through the resin cylinder, so that the yarn is fully infiltrated with the resin, so that the resin can fill the gaps between the yarns to form a compact composite material structure;

[0008] Step 3: Mold forming: the soaked yarn enters the mold and then heats up. The glass fiber yarn and resin in the mold react chemically at high temperature, so that the resin solidifies to form a profile with strength and rigidity.

[0009] Step 4: Traction and cutting: The profile formed by the mold is pulled out of the mold by a traction machine and cut into the required length.

[0010] Optionally, the extrusion pressure of the glass fiber synthetic profile is between 4.5-165 MPa, the extrusion speed is between 0.8-17.5 m / min, the heating temperature during the mold forming process is between 100-250° C., and the cooling temperature is between 3-28° C.

[0011] Optionally, the step 1, step 3 and step 4 respectively include: a calculation preparation module, a mold temperature control module and a traction module;

[0012] The calculation preparation module includes: a fiber tension calculation submodule, a resin impregnation depth calculation submodule and a mold wear prediction submodule;

[0013] The traction module includes: a traction speed calculation submodule and an energy consumption calculation submodule.

[0014] Optionally, the processing process of the fiber tension calculation submodule is as follows:

[0015] ;

[0016] in:

[0017] T refers to the tension value, KA refers to the tension coefficient, DA refers to the diameter of the fiber, LA refers to the length of the fiber, and VA refers to the pultrusion speed;

[0018] The fiber filament diameter DA, the fiber filament length LA and the pultrusion speed VA are input into the fiber filament tension calculation submodule, and the tension value T is output based on the tension coefficient KA.

[0019] Optionally, the processing process of the resin impregnation depth calculation submodule is as follows:

[0020] ;

[0021] in:

[0022] DB refers to the immersion depth value, tb refers to the immersion time, Pb refers to the fiber arrangement density, that is, the proportion of fiber to the mold cross section, and ub refers to the viscosity value of the resin;

[0023] The immersion time tb, the arrangement density of the fiber filaments Pb and the viscosity value ub of the resin are input into the resin immersion depth calculation submodule, and the immersion depth value DB is output.

[0024] Optionally, the processing process of the mold wear prediction submodule is as follows:

[0025] ;

[0026] in:

[0027] Wc refers to the wear amount of the mold, kc refers to the wear coefficient of the mold, Nc refers to the number of pultrusions, dc refers to the diameter of the fiber, and Xc refers to the viscosity of the resin;

[0028] The fiber diameter dc and the resin viscosity Xc are input into the die wear prediction submodule, and the die wear amount Wc is output based on the number of pultrusions Nc and the die wear coefficient kc.

[0029] Optionally, the processing process of the mold temperature control module is as follows:

[0030] TD=TDA 1.5 +∆TDB j -∆TDB s ;

[0031] in:

[0032] TD refers to the temperature of the mold, TDA refers to the temperature at which the resin solidifies, and ∆TDB j Refers to the temperature increment, ∆TDB, determined by the heating rate and heating time s Refers to the temperature drop determined by the thermal conductivity of the mold material and the ambient temperature;

[0033] The resin curing temperature TDA is input into the mold temperature control module, and based on ∆TDB j Temperature increase and temperature decrease ∆TDB s The difference between them is output as the mold temperature value TD.

[0034] Optionally, the processing process of the traction speed calculation submodule is as follows:

[0035] ;

[0036] in:

[0037] VF refers to the pulling speed value, LV refers to the target length value of the product, VTF refers to the total pulling time, and VTT refers to the curing time of the resin in the mold;

[0038] The solidification time VTT of the resin in the mold, the total traction time VTF and the target length value LV of the product are input into the traction speed calculation submodule, and the traction speed value VF is output.

[0039] Optionally, the processing process of the energy consumption calculation submodule is as follows:

[0040] ;

[0041] in:

[0042] EQ refers to the total energy consumption value, PQ refers to the heating power value, TQ refers to the heating time, PSQ refers to the traction power value, and LQS refers to the total pultrusion length;

[0043] The heating power value PQ, heating time TQ, traction power value PSQ and total pultrusion length LQS are input into the energy consumption calculation submodule, and the total energy consumption value EQ is output.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention performs pultrusion molding of profiles through a process flow. The present invention selects multiple strands of high-strength and high-modulus glass fiber yarns to ensure that the skeleton material of the profile has excellent mechanical properties. The glass fiber yarns are soaked in a resin cylinder to ensure that the yarns are fully impregnated with resin to form a compact composite material structure to improve the strength and durability of the profile. The method can accurately adjust the speed and traction of the traction machine according to the material and size of the profile to avoid deformation or breakage of the profile during the traction process.

[0046] 2. The present invention outputs tension values ​​through a fiber tension calculation submodule. This submodule comprehensively considers the effects of fiber material properties, diameter, length and pultrusion speed on tension, and can more accurately calculate the tension required for the fiber during pultrusion. By precisely controlling the tension, it can ensure that the fiber maintains a stable shape during pultrusion to avoid breakage or deformation, thereby improving product quality. This submodule introduces more influencing factors to make tension calculation more accurate. This accuracy is relatively rare in existing calculation forms, and provides a more reliable control method for pultrusion of glass fiber synthetic profiles.

[0047] 3. The present invention outputs the impregnation depth value through the resin impregnation depth calculation submodule. This submodule takes into account the effects of resin viscosity, flow velocity, impregnation time and fiber arrangement density on the impregnation depth, and can more accurately predict the resin impregnation depth in the fiber. By precisely controlling the impregnation depth, it can ensure that the resin fully impregnates the glass fiber, thereby improving the strength and durability of the composite material. This submodule comprehensively considers more process parameters, making the calculation of the impregnation depth more comprehensive and accurate. This improvement facilitates better control of the preparation process of the composite material and improves the quality and performance of the product.

[0048] 4. The present invention outputs the amount of wear of the mold through the mold wear prediction submodule. This submodule can predict the amount of wear of the mold during the pultrusion process, so as to replace or repair the mold in time to avoid production quality problems caused by excessive wear of the mold. By accurately predicting the amount of wear of the mold, a more reasonable maintenance plan can be formulated to reduce maintenance costs. This submodule comprehensively considers more influencing factors, such as the number of pultrusions, the material and hardness of the fiber filament, and the viscosity of the resin, so that the prediction of the amount of wear of the mold is more accurate. This improvement helps to better control the use and maintenance process of the mold and improve production efficiency and product quality.

[0049] 5. The present invention outputs the temperature value of the mold through the mold temperature control module. This module can ensure that the resin is fully cured in the mold while avoiding material degradation caused by overheating by dynamically adjusting the mold temperature. By accurately controlling the mold temperature, the curing process of the composite material can be optimized, thereby improving the strength and durability of the product. This module introduces dynamic adjustment to make the control of the mold temperature more flexible and accurate. This improvement helps to better adapt to the needs of different materials and process conditions and improve product quality and production efficiency.

[0050] 6. The present invention outputs the traction speed value through the traction speed calculation submodule. This submodule comprehensively considers the influence of the required length of the product, the total time and the resin curing time on the traction speed, and can more accurately calculate the traction speed that meets the production requirements. This submodule takes the resin curing time into consideration to make the calculation of the traction speed more comprehensive and accurate, which helps to better control the preparation process of the composite material and improve the quality and production efficiency of the product.

[0051] 7. The present invention outputs the traction speed value through the traction speed calculation submodule. This submodule comprehensively considers the influence of the required length, total time and resin curing time of the product on the traction speed, and can accurately calculate the traction speed that meets the production requirements. This submodule also takes the resin curing time into consideration, making the calculation of the traction speed more comprehensive and accurate, which helps to better control the preparation process of the composite material and improve the quality and production efficiency of the product.

[0052] 8. The present invention outputs the total energy consumption value through the energy consumption calculation submodule. This submodule can calculate the total energy consumption in the pultrusion process, thereby helping to formulate a more reasonable energy utilization plan to reduce production costs. This submodule can accurately calculate the energy consumption and formulate a more energy-saving production plan to reduce energy consumption. This submodule comprehensively considers multiple parameter values ​​such as heating power, heating time, traction power and traction speed, making the energy consumption calculation more comprehensive and accurate, which helps to better control the energy utilization in the pultrusion process and improve energy utilization efficiency and production benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 The present invention is a flow chart of the steps of the pultrusion method of the glass fiber synthetic profile;

[0054] Figure 2 A schematic diagram of a calculation preparation module for the pultrusion molding method of the glass fiber composite profile;

[0055] Figure 3 This is a schematic structural diagram of a traction module of the pultrusion molding method of glass fiber synthetic profiles. DETAILED DESCRIPTION

[0056] 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.

[0057] The pultrusion molding method of the glass fiber synthetic profile is different from the existing profile pultrusion molding method. The existing pultrusion molding method relies on manual experience to control key process parameters such as resin impregnation depth, mold temperature, and traction speed, resulting in unstable product quality and poor dimensional accuracy. There is a lack of accurate calculation formulas to guide the optimization of these parameters, and it is impossible to achieve an efficient and stable pultrusion molding process. It may be impossible to accurately adjust the extrusion parameters, the ratio of resin to extruded material, etc. according to product performance requirements, resulting in unstable product quality;

[0058] The module of the pultrusion method of the glass fiber synthetic profile guides the selection and optimization of key process parameters such as resin impregnation depth, mold temperature, and pulling speed through precise calculation formulas, thereby achieving improved stability and precision of product quality and reducing scrap rate. In the pultrusion process, precise calculation formulas are used to guide the selection and optimization of key process parameters, achieving precise adjustment of extrusion parameters, resin-to-extrusion material ratio and other parameters, thereby improving the stability and consistency of product quality.

[0059] Example 1: Please refer to Figures 1 to 3 The present invention provides a pultrusion molding method for a glass fiber composite profile, comprising the following molding method:

[0060] Step 1: Prepare the raw materials; select multiple strands of glass fiber yarn, adjust the unsaturated resin to a suitable color according to the color selected by the user and put it into the resin cylinder, then add the curing agent and accelerator to ensure that the resin can be quickly cured during the molding process;

[0061] The glass fiber raw materials include inorganic materials, boric acid and soda ash. The inorganic materials include one or more of quartz sand, alumina, limestone, mirabilite and fluorite, and the melting temperature is 700-1200°C.

[0062] Step 2: soaking the yarn; soaking the prepared glass fiber yarn through a resin cylinder to fully infiltrate the yarn with resin so that the resin can fill the gaps between the yarns to form a compact composite material structure;

[0063] Step 3: Mold forming: the soaked yarn enters the mold and then heats up. The glass fiber yarn and resin in the mold react chemically at high temperature, so that the resin solidifies to form a profile with strength and rigidity.

[0064] The molds include one or more of photovoltaic module frame molds, door and window strip molds, automobile instrument molds, automobile seat molds and sports equipment molds;

[0065] Step 4: Traction and cutting: The profile formed by the mold is pulled out of the mold by a traction machine and cut into the required length;

[0066] The extrusion pressure of glass fiber synthetic profiles is between 4.5-165MPa, the extrusion speed is between 0.8-17.5m / min, the heating temperature during the mold forming process is between 100-250℃, and the cooling temperature is between 3-28℃;

[0067] The mass ratio of the extruded material to the resin is (44-96):(4-56);

[0068] The mass ratio of extruded material to resin is specifically 44:56, 50:50, 65:35, 75:25, 92:8, and 96:4;

[0069] The resin includes one or more of polyurethane, epoxy resin, polyacrylic acid and fluorocarbon resin;

[0070] The heating temperature is 100°C, 114°C, 126°C, 133°C, 142°C, 158°C, 163°C, 179°C, 182°C, 193°C, 210°C, 215°C, 221°C or a range consisting of any two of them, and the time is 0.5min, 1, 2min, 3min, 4min, 5min, 6min, 7min, 8min, 9min, 10min or a range consisting of any two of them; the cooling temperature is 5°C, 8°C, 10°C, 12°C, 15°C, 18°C, 20°C, 22°C, 25°C, 28°C, 30°C or a range consisting of any two of them, and the time is 0.5min, 1min, 2min, 3min, 4min, 5min, 6min, 7min, 8min, 9min, 10min, 11min, 12min, 13min, 14min, 15min or a range consisting of any two of them;

[0071] In this embodiment: This method selects multiple strands of high-strength, high-modulus glass fiber yarns to ensure that the skeleton material of the profile has excellent mechanical properties, and can adjust the formula of the unsaturated resin according to the color and performance requirements selected by the user, and add an appropriate amount of curing agent and accelerator to achieve rapid curing of the resin and good formability, and soak the glass fiber yarn through a resin cylinder to ensure that the yarn is fully impregnated with the resin, forming a tight composite material structure, and improving the strength and durability of the profile. In the mold, the yarn and the resin react chemically at high temperature to achieve rapid curing of the resin. At the same time, the specific shape and size of the mold ensure the precise molding of the profile. This method can accurately adjust the speed and traction of the traction machine according to the material and size of the profile, avoiding deformation or breakage of the profile during traction.

[0072] Example 2: Please refer to Figures 1 to 3 , step 1, step 3 and step 4 respectively include: a calculation preparation module, a mold temperature control module and a traction module;

[0073] The calculation preparation module includes: a fiber tension calculation submodule, a resin impregnation depth calculation submodule and a mold wear prediction submodule;

[0074] The traction module includes: a traction speed calculation submodule and an energy consumption calculation submodule.

[0075] In this embodiment: the pultrusion molding method of the glass fiber synthetic profile is based on the combined use of the calculation preparation module, the mold temperature control module and the traction module. The calculated tension value can ensure that the fiber filaments maintain a stable shape during the pultrusion process to avoid breakage or deformation, thereby improving the dimensional accuracy and appearance quality of the product. The precise control of the resin impregnation depth helps the resin to fully infiltrate the fiber filaments to form a compact composite material structure and improve the strength and durability of the product. The dynamic adjustment of the mold temperature can ensure that the resin is fully cured in the mold while avoiding material degradation caused by overheating, thereby improving the overall performance of the product. The calculated traction speed can ensure that the composite material is fully cured during the pultrusion process while avoiding material damage caused by excessive stretching, thereby maintaining the stability and consistency of the product.

[0076] And optimize production efficiency and energy utilization efficiency: precise control of tension, impregnation depth, mold temperature and pulling speed can reduce downtime caused by material breakage, insufficient curing or excessive stretching, thereby improving production efficiency. By accurately calculating energy consumption, more energy-saving production plans can be formulated, the heating and pulling processes can be optimized, and production costs can be reduced;

[0077] It also has the function of extending the service life of the mold and reducing maintenance costs: by predicting the amount of wear on the mold during the pultrusion process, the mold can be discovered and replaced or repaired in time, avoiding production quality problems caused by excessive wear of the mold and extending the service life of the mold. Accurate mold wear prediction helps to formulate a more reasonable maintenance plan, reduce unnecessary maintenance costs, and reduce production costs.

[0078] See also Figures 1 to 3 , the processing process of the fiber tension calculation submodule is as follows:

[0079] ;

[0080] in:

[0081] T refers to the tension value, KA refers to the tension coefficient, DA refers to the diameter of the fiber, LA refers to the length of the fiber, and VA refers to the pultrusion speed;

[0082] The fiber filament diameter DA, the fiber filament length LA and the pultrusion speed VA are input into the fiber filament tension calculation submodule, and the tension value T is output based on the tension coefficient KA.

[0083] In this embodiment: this submodule comprehensively considers the influence of the material properties, diameter, length and pultrusion speed of the fiber filament on the tension, and can more accurately calculate the tension required for the fiber filament during the pultrusion process. By accurately controlling the tension, it can ensure that the fiber filament maintains a stable shape during the pultrusion process to avoid breakage or deformation, thereby improving the quality and consistency of the product. Accurate tension control can reduce the downtime caused by fiber filament breakage or deformation, thereby improving production efficiency, and stable tension helps to evenly distribute the fiber filament in the resin, improving the overall performance of the composite material. Different from the prior art, this submodule introduces more influencing factors, such as the material properties of the fiber filament and the pultrusion speed, so that the tension calculation is more accurate. This accuracy is relatively rare in existing calculation forms, and provides a more reliable control method for the pultrusion molding of glass fiber synthetic profiles.

[0084] See also Figures 1 to 3 , the processing process of the resin impregnation depth calculation submodule is as follows:

[0085] ;

[0086] in:

[0087] DB refers to the immersion depth value, tb refers to the immersion time, Pb refers to the fiber arrangement density, that is, the proportion of fiber to the mold cross section, and ub refers to the viscosity value of the resin;

[0088] The immersion time tb, the arrangement density of the fiber filaments Pb and the viscosity value ub of the resin are input into the resin immersion depth calculation submodule, and the immersion depth value DB is output.

[0089] In this embodiment: this submodule takes into account the effects of resin viscosity, flow rate, impregnation time and fiber arrangement density on the impregnation depth, and can more accurately predict the impregnation depth of the resin in the fiber filaments. By precisely controlling the impregnation depth, it can ensure that the resin fully impregnates the fiber filaments, thereby improving the strength and durability of the composite material. Accurate impregnation depth control can reduce resin waste and improve material utilization. Sufficient resin impregnation helps to form a tighter composite structure and improve the overall performance of the product. Compared with the prior art, this submodule comprehensively considers more process parameters, making the calculation of the impregnation depth more comprehensive and accurate. This improvement helps to better control the preparation process of the composite material and improve the quality and performance of the product.

[0090] See also Figures 1 to 3 ,The processing process of the mold wear prediction submodule is as follows:

[0091] ;

[0092] in:

[0093] Wc refers to the wear amount of the mold, kc refers to the wear coefficient of the mold, Nc refers to the number of pultrusions, dc refers to the diameter of the fiber, and Xc refers to the viscosity of the resin;

[0094] The fiber diameter dc and the resin viscosity Xc are input into the die wear prediction submodule, and the die wear amount Wc is output based on the number of pultrusions Nc and the die wear coefficient kc.

[0095] In this embodiment: this submodule can predict the amount of wear of the mold during the pultrusion process, so as to replace or repair the mold in time to avoid production quality problems caused by excessive wear of the mold. By accurately predicting the amount of mold wear, the service life of the mold can be extended and production costs can be reduced. Timely mold replacement or repair can reduce downtime caused by mold wear and improve production efficiency. By accurately predicting the amount of mold wear, a more reasonable maintenance plan can be formulated to reduce maintenance costs. This submodule is compared with the existing technology. This submodule comprehensively considers more influencing factors, such as the number of pultrusions, the material and hardness of the fiber filament, and the viscosity of the resin, so that the prediction of the amount of mold wear is more accurate. This improvement helps to better control the use and maintenance process of the mold and improve production efficiency and product quality.

[0096] See also Figures 1 to 3 , the processing process of the mold temperature control module is as follows:

[0097] TD=TDA 1.5+∆TDB j -∆TDB s ;

[0098] in:

[0099] TD refers to the temperature of the mold, TDA refers to the temperature at which the resin solidifies, and ∆TDB j Refers to the temperature increment, ∆TDB, determined by the heating rate and heating time s Refers to the temperature drop determined by the thermal conductivity of the mold material and the ambient temperature;

[0100] The resin curing temperature TDA is input into the mold temperature control module, and based on ∆TDB j Temperature increase and temperature decrease ∆TDB s The difference between them is output as the mold temperature value TD.

[0101] In this embodiment: This module can ensure that the resin is fully cured in the mold by dynamically adjusting the mold temperature, while avoiding material degradation caused by overheating. By accurately controlling the mold temperature, the curing process of the composite material can be optimized, and the strength and durability of the product can be improved. This dynamic temperature control can reduce downtime caused by insufficient curing or overheating, improve production efficiency, and by accurately controlling the heating and cooling process, it can reduce energy consumption and improve energy efficiency. Compared with the existing technology, this module introduces the concept of dynamic adjustment, making the control of mold temperature more flexible and accurate. This improvement helps to better adapt to the needs of different materials and process conditions and improve product quality and production efficiency.

[0102] See also Figures 1 to 3 , the processing process of the traction speed calculation submodule is as follows:

[0103] ;

[0104] in:

[0105] VF refers to the pulling speed value, LV refers to the target length value of the product, VTF refers to the total pulling time, and VTT refers to the curing time of the resin in the mold;

[0106] The solidification time VTT of the resin in the mold, the total traction time VTF and the target length value LV of the product are input into the traction speed calculation submodule, and the traction speed value VF is output.

[0107] In this embodiment: this submodule comprehensively considers the influence of the required length, total time and resin curing time of the product on the traction speed, and can more accurately calculate the traction speed that meets the production requirements. By accurately controlling the traction speed, it can ensure that the composite material is fully cured during the pultrusion process, while avoiding material damage caused by excessive stretching. Accurate traction speed control helps to form a more uniform composite material structure and improve the overall performance of the product. A reasonable traction speed can ensure the continuity and stability of the production process and improve production efficiency. Compared with the prior art, this submodule takes the resin curing time into consideration, making the calculation of the traction speed more comprehensive and accurate. This improvement helps to better control the preparation process of the composite material and improve the quality and production efficiency of the product.

[0108] See also Figures 1 to 3 , the processing process of the energy consumption calculation submodule is as follows:

[0109] ;

[0110] in:

[0111] EQ refers to the total energy consumption value, PQ refers to the heating power value, TQ refers to the heating time, PSQ refers to the traction power value, and LQS refers to the total pultrusion length;

[0112] The heating power value PQ, heating time TQ, traction power value PSQ and total pultrusion length LQS are input into the energy consumption calculation submodule, and the total energy consumption value EQ is output.

[0113] In this embodiment: This submodule can calculate the total energy consumption in the pultrusion process, thereby helping to formulate a more reasonable energy utilization plan and reduce production costs. By accurately calculating energy consumption, the heating and traction processes can be optimized and energy utilization efficiency can be improved. This submodule can formulate a more energy-saving production plan and reduce energy consumption by accurately calculating energy consumption. This submodule is compared with the prior art. This submodule comprehensively considers multiple parameters such as heating power, heating time, traction power and traction speed, making the calculation of energy consumption more comprehensive and accurate. This improvement helps to better control the energy utilization in the pultrusion process and improve energy utilization efficiency and production benefits.

[0114] In the specific implementation process, a plurality of modules in the method are used to form a method system for pultrusion of glass fiber synthetic profiles. The pultrusion method selects multiple strands of high-strength, high-modulus glass fiber yarns to ensure that the skeleton material of the profile has excellent mechanical properties. The glass fiber yarn is soaked in a resin cylinder to ensure that the yarn is fully impregnated with resin, forming a compact composite material structure to improve the strength and durability of the profile. The method can accurately adjust the speed and traction of the traction machine according to the material and size of the profile, thereby avoiding deformation or breakage of the profile during the traction process.

[0115] By inputting the fiber diameter DA, fiber length LA and pultrusion speed VA into the fiber tension calculation submodule, and outputting the tension value T based on the tension coefficient KA, this submodule comprehensively considers the influence of the fiber material properties, diameter, length and pultrusion speed on the tension, and can more accurately calculate the tension required for the fiber during the pultrusion process. By accurately controlling the tension, it can ensure that the fiber maintains a stable shape during the pultrusion process to avoid breakage or deformation, thereby improving the quality and consistency of the product. This submodule introduces more influencing factors, such as the material properties of the fiber and the pultrusion speed, making the tension calculation more accurate. This accuracy is relatively rare in existing calculation forms, and provides a more reliable control method for the pultrusion molding of glass fiber synthetic profiles.

[0116] The impregnation time tb, fiber arrangement density Pb ​​and resin viscosity value ub are input into the resin impregnation depth calculation submodule, and the impregnation depth value DB is output. This submodule takes into account the influence of resin viscosity, flow velocity, impregnation time and fiber arrangement density on the impregnation depth, and can more accurately predict the impregnation depth of the resin in the fiber. By precisely controlling the impregnation depth, it can ensure that the resin fully impregnates the fiber, thereby improving the strength and durability of the composite material. This submodule comprehensively considers more process parameters, making the calculation of the impregnation depth more comprehensive and accurate. This improvement facilitates better control of the preparation process of the composite material and improves the quality and performance of the product.

[0117] The fiber filament diameter dc and the resin viscosity Xc are input into the mold wear prediction submodule, and the mold wear amount Wc is output based on the number of pultrusions Nc and the mold wear coefficient kc. This submodule can predict the mold wear amount during the pultrusion process, so that the mold can be replaced or repaired in time to avoid production quality problems caused by excessive mold wear. By accurately predicting the mold wear amount, a more reasonable maintenance plan can be formulated to reduce maintenance costs. This submodule comprehensively considers more influencing factors, such as the number of pultrusions, the material and hardness of the fiber filament, and the viscosity of the resin, making the prediction of the mold wear amount more accurate. This improvement helps to better control the use and maintenance process of the mold and improve production efficiency and product quality.

[0118] The resin curing temperature TDA is input into the mold temperature control module, and based on ∆TDB j Temperature increase and temperature decrease ∆TDB sThe difference between them outputs the mold temperature value TD. This module can ensure that the resin is fully cured in the mold by dynamically adjusting the mold temperature, while avoiding material degradation caused by overheating. By accurately controlling the mold temperature, the curing process of the composite material can be optimized and the strength and durability of the product can be improved. This module introduces the concept of dynamic adjustment, making the control of mold temperature more flexible and accurate. This improvement helps to better adapt to the needs of different materials and process conditions and improve product quality and production efficiency.

[0119] The curing time VTT of the resin in the mold, the total traction time VTF and the target length value LV of the product are input into the traction speed calculation submodule, and the traction speed value VF is output. This submodule comprehensively considers the influence of the required length, total time and resin curing time of the product on the traction speed, and can more accurately calculate the traction speed that meets the production requirements. This submodule takes the resin curing time into consideration, making the calculation of the traction speed more comprehensive and accurate. This improvement helps to better control the preparation process of composite materials and improve product quality and production efficiency.

[0120] The heating power value PQ, heating time TQ, traction power value PSQ and total pultrusion length LQS are input into the energy consumption calculation submodule, and the total energy consumption value EQ is output. This submodule can calculate the total energy consumption in the pultrusion process, thereby helping to formulate a more reasonable energy utilization plan to reduce production costs. This submodule can formulate a more energy-saving production plan to reduce energy consumption by accurately calculating energy consumption. This submodule comprehensively considers multiple parameter values ​​such as heating power, heating time, traction power and traction speed, making the calculation of energy consumption more comprehensive and accurate. This improvement helps to better control the energy utilization in the pultrusion process and improve energy utilization efficiency and production benefits.

[0121] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pultrusion method for glass fiber synthetic profiles, characterized in that: The following molding methods are included: Step 1: Prepare the raw materials; select multiple strands of glass fiber yarn, adjust the unsaturated resin to a suitable color according to the color selected by the user and put it into the resin cylinder, then add the curing agent and accelerator to ensure that the resin can be quickly cured during the molding process; Step 2, soaking the yarn; soaking the prepared glass fiber yarn through the resin cylinder, so that the yarn is fully infiltrated with the resin, so that the resin can fill the gaps between the yarns to form a compact composite material structure; Step 3: Mold forming: the soaked yarn enters the mold and then heats up. The glass fiber yarn and resin in the mold react chemically at high temperature, so that the resin solidifies to form a profile with strength and rigidity. Step 4: Traction and cutting: The profile formed by the mold is pulled out of the mold by a traction machine and cut into the required length; The step 1, step 3 and step 4 respectively include: a calculation preparation module, a mold temperature control module and a traction module; The calculation preparation module includes: a fiber tension calculation submodule, a resin impregnation depth calculation submodule and a mold wear prediction submodule; The traction module includes: a traction speed calculation submodule and an energy consumption calculation submodule.

2. The pultrusion method of glass fiber synthetic profile according to claim 1, characterized in that: The extrusion pressure of the glass fiber synthetic profile is between 4.5-165 MPa, the extrusion speed is between 0.8-17.5 m / min, the heating temperature during the mold forming process is between 100-250° C., and the cooling temperature is between 3-28° C.

3. The pultrusion method of glass fiber synthetic profile according to claim 1, characterized in that: The processing process of the fiber tension calculation submodule is as follows: ； in: T refers to the tension value, KA refers to the tension coefficient, DA refers to the diameter of the fiber, LA refers to the length of the fiber, and VA refers to the pultrusion speed; The fiber filament diameter DA, the fiber filament length LA and the pultrusion speed VA are input into the fiber filament tension calculation submodule, and the tension value T is output based on the tension coefficient KA.

4. The pultrusion method of glass fiber synthetic profile according to claim 3, characterized in that: The processing process of the resin impregnation depth calculation submodule is as follows: ； in: DB refers to the immersion depth value, tb refers to the immersion time, Pb refers to the fiber arrangement density, that is, the proportion of fiber to the mold cross section, and ub refers to the viscosity value of the resin; The immersion time tb, the arrangement density of the fiber filaments Pb and the viscosity value ub of the resin are input into the resin immersion depth calculation submodule, and the immersion depth value DB is output.

5. The pultrusion method of glass fiber synthetic profile according to claim 1, characterized in that: The processing process of the mold wear prediction submodule is as follows: ； in: Wc refers to the wear amount of the mold, kc refers to the wear coefficient of the mold, Nc refers to the number of pultrusions, dc refers to the diameter of the fiber, and Xc refers to the viscosity of the resin; The fiber diameter dc and the resin viscosity Xc are input into the die wear prediction submodule, and the die wear amount Wc is output based on the number of pultrusions Nc and the die wear coefficient kc.

6. The pultrusion method of glass fiber synthetic profile according to claim 1, characterized in that: The processing process of the mold temperature control module is as follows: TD=TDA 1.5 +∆TDB j -∆TDB s ; in: TD refers to the temperature of the mold, TDA refers to the temperature at which the resin solidifies, and ∆TDB j Refers to the temperature increment, ∆TDB, determined by the heating rate and heating time s Refers to the temperature drop determined by the thermal conductivity of the mold material and the ambient temperature; The resin curing temperature TDA is input into the mold temperature control module, and based on ∆TDB j Temperature increase and temperature decrease ∆TDB s The difference between them is output as the mold temperature value TD.

7. The pultrusion method of glass fiber synthetic profile according to claim 1, characterized in that: The processing process of the traction speed calculation submodule is as follows: ； in: VF refers to the pulling speed value, LV refers to the target length value of the product, VTF refers to the total pulling time, and VTT refers to the curing time of the resin in the mold; The solidification time VTT of the resin in the mold, the total traction time VTF and the target length value LV of the product are input into the traction speed calculation submodule, and the traction speed value VF is output.

8. The pultrusion method of glass fiber synthetic profile according to claim 7, characterized in that: The processing process of the energy consumption calculation submodule is as follows: ； in: EQ refers to the total energy consumption value, PQ refers to the heating power value, TQ refers to the heating time, PSQ refers to the traction power value, and LQS refers to the total pultrusion length; The heating power value PQ, heating time TQ, traction power value PSQ and total pultrusion length LQS are input into the energy consumption calculation submodule, and the total energy consumption value EQ is output.

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