Web plate, method for manufacturing web plate, fan blade and wind turbine generator set

Abstract

The present invention provides a web, a method for manufacturing the web, a wind turbine blade and a wind turbine generator set. The web comprises a core material and reinforcement parts respectively arranged on both sides of the core material, and the reinforcement parts comprise a polydicyclopentadiene resin matrix and a reinforcement layer arranged in the polydicyclopentadiene resin matrix. The web according to the present invention has low manufacturing cost, high manufacturing efficiency and light weight.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a web, a method for manufacturing the web, a wind turbine blade and a wind power generator set. Background Art

[0002] At present, the web of the wind turbine blade is mainly composed of a sandwich structure consisting of a two-component epoxy resin system infused with glass fiber fabric and a core material.

[0003] Epoxy resin is a polymer with more than two epoxy groups in its molecule, which is commonly made by condensation polymerization of bisphenol A, epichlorohydrin, polyols, etc. As the raw materials for making epoxy resin have increased in price significantly, the cost of wind turbine blades has also increased significantly.

[0004] In addition, due to the high viscosity of epoxy resin at room temperature (200cps-300cps), the infusion time of thick parts is long, which increases the infusion time of the entire blade web. The infusion time is longer in the thicker parts of the blade web, generally requiring 1-2 hours. In addition, the epoxy resin system requires post-curing, and the post-curing cycle is 6-7h at 70°C. Therefore, the production efficiency of blade webs manufactured using epoxy resin systems is low. Summary of the invention

[0005] The object of the present invention is to provide a web plate with low manufacturing cost, high manufacturing efficiency and light weight.

[0006] Another object of the present invention is to provide a method for manufacturing a web that can solve the process problem of whitening due to poor wetting, which is easily caused when a web is formed using a polydicyclopentadiene resin.

[0007] According to one aspect of the present invention, a web is provided, comprising a core material and reinforcement parts respectively arranged on both sides of the core material, wherein the reinforcement parts comprise a polydicyclopentadiene resin matrix and a reinforcement layer arranged in the polydicyclopentadiene resin matrix.

[0008] Optionally, the reinforcement layer includes at least one of glass fiber, carbon fiber, basalt fiber, aramid fiber and flax fiber.

[0009] Optionally, the core material includes at least one of a hole and a groove, and the polydicyclopentadiene resin matrix extends into the hole and / or the groove.

[0010] Optionally, the core material includes a first core material and a second core material, the second core material is located at a lifting point of the web, and the strength of the second core material is greater than the strength of the first core material.

[0011] According to another aspect of the present invention, a method for manufacturing a web is provided, the method comprising: laying a core material and a reinforcement layer in a web mold, the reinforcement layer being arranged on both sides of the core material; pouring resin, the resin being a polydicyclopentadiene resin system; and curing the resin.

[0012] Optionally, the step of infusing the resin includes: arranging a vacuum system on the outside of the web mold; evacuating the air and infusing the resin after evacuating the air, wherein the resin infusion temperature is 25°C-35°C.

[0013] Optionally, the step of curing the resin comprises: keeping the temperature at 40-60° C. for 1-2 hours and then heating to 80-85° C. and keeping the temperature for 3-4 hours.

[0014] Optionally, the step of evacuating the air comprises: setting the vacuum degree to 0.5-0.8 atmospheres before the infusion volume of the resin reaches half.

[0015] Optionally, the diameter of the tube for pouring the resin is 5-20 mm.

[0016] Optionally, when pouring the resin, the pouring rate of the resin is gradually increased.

[0017] Optionally, the polydicyclopentadiene resin system includes dicyclopentadiene or dicyclopentadiene prepolymer, and the polydicyclopentadiene resin system further includes a catalyst, and the content of the catalyst is 0.01-5 parts by weight based on 100 parts by weight of the dicyclopentadiene or the dicyclopentadiene prepolymer.

[0018] Optionally, the dicyclopentadiene prepolymer is formed from dicyclopentadiene and an elastomer, and the weight ratio of the elastomer to the dicyclopentadiene is 0.01-0.7.

[0019] Optionally, the catalyst includes a ruthenium catalyst, a classical two-component catalyst, a molybdenum phenol compound or a tungsten-triphenylphosphine series complex, and the elastomer includes a thermoplastic elastomer.

[0020] Optionally, the method for manufacturing the polydicyclopentadiene resin system includes: before infusing the resin, separating dicyclopentadiene or dicyclopentadiene prepolymer and the catalyst into component A and component B, wherein component A is dicyclopentadiene or dicyclopentadiene prepolymer and component B is the catalyst, or component A is a part of dicyclopentadiene or dicyclopentadiene prepolymer and component B is the catalyst and the rest of dicyclopentadiene or dicyclopentadiene prepolymer; degassing the component A and the component B respectively and then mixing them.

[0021] According to another aspect of the present invention, a wind blade is provided, comprising the web as described above.

[0022] According to another aspect of the present invention, a wind turbine generator set is provided, wherein the wind turbine generator set comprises the wind turbine blade as described above.

[0023] According to the present invention, the cost of the polydicyclopentadiene resin system (combination material) used for the polydicyclopentadiene resin matrix is ​​more than 30% cheaper than that of the epoxy resin system, and each blade web can save 10,000 to 30,000 yuan, with a significant cost reduction effect.

[0024] According to the present invention, the web is made by infusing the reinforcement layer and the core material with a polydicyclopentadiene resin system. Since the polydicyclopentadiene resin system has a low viscosity at room temperature, only 10 to 100 cps, its infusion speed is very fast, which can shorten the infusion time of the web by about 0.5 to 1.5 hours.

[0025] According to the present invention, the polydicyclopentadiene resin does not need post-curing, has a short curing time, and can greatly improve production efficiency.

[0026] According to the present invention, the density of the polydicyclopentadiene resin system (combination material) is 1.03-1.05 g / cm 3 The density after curing is lower than that of the epoxy resin system after curing, and the weight of the web obtained is 3-5% lighter, thereby achieving lightweighting of the blade.

[0027] In addition, according to the present invention, there is provided a process capable of solving the problem of whitening due to poor wetting when forming a web using a polydicyclopentadiene resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is an exploded schematic diagram of a portion of a blade according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a main beam and a web according to an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of a web according to an embodiment of the present invention;

[0032] Figure 4 is along Figure 3 A cross-sectional view taken along line AA;

[0033] Figure 5 is a schematic diagram illustrating a method of manufacturing a web according to an embodiment of the present invention.

[0034] In the accompanying drawings: 101 is the first shell, 102 is the second shell, 10 is the web, 20 is the main beam, 11 is the reinforcement part, 12 is the core material, 12a is the first core material, 12b is the second core material, 31 is the integrated infusion system, 32 is the vacuum system, 33 is the web mold, 34 is the first valve, 35 is the second valve, and 36 is the temperature sensor. DETAILED DESCRIPTION

[0035] Below, we will refer to Figures 1 to 5 A web plate, a method for manufacturing the web plate, a wind turbine blade and a wind turbine generator set according to embodiments of the present invention are described.

[0036] Figure 1 FIG. 1 is an exploded schematic diagram of a portion of a blade according to an embodiment of the present invention. Figure 1 As shown, the blade may include a first shell 101 and a second shell 102. In the assembled blade, the first shell 101 and the second shell 102 may be combined with each other to form a complete shell, providing a geometric airfoil for airflow to pass through.

[0037] According to an embodiment of the present invention, the blade may include a web 10. The web 10 may be supported between the first shell 101 and the second shell 102 to withstand shear force and bending moment. Alternatively, the blade may include two webs 10, which are separated from each other. However, the number of webs 10 is not particularly limited.

[0038] According to an embodiment of the present invention, the blade may further include a main beam 20. The main beam 20 may be disposed in the first shell 101 and the second shell 102 to serve as a load-bearing component. The blade may include two main beams 20 disposed in the first shell 101 and the second shell 102, respectively.

[0039] Figure 2 Schematic diagram of the main beam and web according to an embodiment of the present invention. Figure 2 As shown, two main beams 20 are opposite to each other in the thickness direction of the blade, and two webs 10 are opposite to each other in the chord direction of the blade and support the two main beams 20 .

[0040] Below, we will refer to Figure 3 and Figure 4 A web according to an embodiment of the present invention will be described. Figure 3 is a schematic diagram of a web according to an embodiment of the present invention, Figure 4 is along Figure 3 Cross-sectional view taken along line AA.

[0041] like Figure 3 and Figure 4 As shown, the web 10 according to the embodiment of the present invention may include a core material 12 and reinforcement parts 11 respectively disposed on both sides of the core material 12 .

[0042] According to an embodiment of the present invention, the reinforcement parts 11 disposed on both sides of the core material 12 are combined together at both ends of the core material 12 and turned over to form bonding flanges, so that the web 10 forms a structure similar to a C-type or T-type to provide strength and rigidity of the blade. However, the shape of the web 10 is not specifically limited.

[0043] According to an embodiment of the present invention, the reinforcement part 11 may include a polydicyclopentadiene resin matrix and a reinforcement layer disposed in the polydicyclopentadiene resin matrix. According to the present invention, by applying the polydicyclopentadiene resin matrix in the reinforcement part 11, at least one of the following technical effects can be achieved: 1. The cost of the polydicyclopentadiene resin system (combination material) (the polydicyclopentadiene resin forms the polydicyclopentadiene resin matrix after infusion and curing) is more than 30% cheaper than that of the epoxy resin system, and each blade web can save 10,000 to 30,000 yuan, with obvious cost reduction effect; 2. When the polydicyclopentadiene resin system (combination material) is used to infuse the reinforcement layer and the core material to make the web, since the polydicyclopentadiene resin system (combination material) has a low viscosity at room temperature, only 10 to 100 cps, its infusion speed is very fast, which can shorten the infusion time of the web by about 0.5 to 1.5 hours; 3. The polydicyclopentadiene resin does not need post-curing, and the curing time is short, which can greatly improve the production efficiency; 4. The density of the polydicyclopentadiene resin system (combination material) is 1.03 to 1.05 g / cm 3 The density after curing is lower than that of the epoxy resin system after curing, and the weight of the web obtained is 3-5% lighter, thereby achieving lightweighting of the blade.

[0044] According to an embodiment of the present invention, the polydicyclopentadiene resin matrix can be made of a polydicyclopentadiene resin system (combination material). The polydicyclopentadiene (PDCPD) resin system is a polymer IPN alloy material copolymerized by a catalyst, dicyclopentadiene (DCPD) or dicyclopentadiene (DCPD) prepolymer, and has the characteristics of low density, good toughness, easy infusion, fast curing speed, etc.

[0045] According to an embodiment of the present invention, the polydicyclopentadiene resin system may include dicyclopentadiene or dicyclopentadiene prepolymer. Dicyclopentadiene is modified by using an elastomer to form a dicyclopentadiene prepolymer. By modifying dicyclopentadiene, the molecular weight can be increased and the performance can be improved.

[0046] According to an embodiment of the present invention, the weight ratio of elastomer and dicyclopentadiene is 0.01-0.7. When the weight ratio of elastomer and dicyclopentadiene is less than 0.01, the addition of elastomer is too small, and the effect of dicyclopentadiene being modified is not obvious. When the weight ratio of elastomer and dicyclopentadiene reaches 0.7, the effect of dicyclopentadiene being modified is very significant, and when the weight ratio of elastomer and dicyclopentadiene exceeds 0.7, the effect of dicyclopentadiene being modified is no longer obviously improved, and on the contrary, the amount of dicyclopentadiene can be affected, so the performance of dicyclopentadiene as a host is affected.

[0047] According to an embodiment of the present invention, the elastomer may be a thermoplastic elastomer (TPE or TPR). Optionally, the elastomer may be any one of SBS (styrene-based thermoplastic elastomer), SEBS (saturated SBS), PS (polystyrene), TPS (styrene-based thermoplastic elastomer), TPV (thermoplastic ethylene propylene diene monomer dynamically vulcanized elastomer), TPEE (thermoplastic polyester elastomer) and TPU (primary thermoplastic polyurethane elastomer rubber).

[0048] According to an embodiment of the present invention, the polydicyclopentadiene resin system may further include a catalyst. Based on 100 parts by weight of dicyclopentadiene or dicyclopentadiene prepolymer, the content of the catalyst is 0.01-5 parts by weight. According to the present invention, by adding a catalyst to the dicyclopentadiene prepolymer, a catalytic polymerization can be played in the polymerization reaction of the dicyclopentadiene prepolymer.

[0049] When based on 100 weight portions of dicyclopentadiene or dicyclopentadiene prepolymer, the addition of catalyst was less than 0.01 weight portion, and the addition of catalyst was too small, and the effect of the catalytic polymerization of dicyclopentadiene or dicyclopentadiene prepolymer could not be fully exerted.When based on 100 weight portions of dicyclopentadiene or dicyclopentadiene prepolymer, the addition of catalyst was greater than 5 weight portions, the effect of the catalytic polymerization of dicyclopentadiene or dicyclopentadiene prepolymer was no longer significantly improved, and on the contrary, the amount of dicyclopentadiene or dicyclopentadiene prepolymer was also affected, so the performance of the dicyclopentadiene or dicyclopentadiene prepolymer as a host was affected.

[0050] According to an embodiment of the present invention, the catalyst may include a ruthenium catalyst, a classical two-component catalyst, a molybdenum phenol compound, or a tungsten-triphenylphosphine series complex, etc. The ruthenium catalyst may be Grubbs generation one or Grubbs generation two. The first component (main catalyst) in the classical two-component catalyst is a complex of W, Mo, Ru, Ti, Re, etc., and the second component is a metal organic compound of Al, Mg, Sn, Zn, Si, etc. The molybdenum phenol compound may be, for example, tri-p-methylphenoxy molybdenum dichloride, tris (2,4-di-tert-butyl-6-methylphenoloxy) molybdenum dichloride, tris-nonylphenoxy molybdenum dioxide, etc.

[0051] According to an embodiment of the present invention, the reinforcement part 11 may further include a reinforcement layer disposed in a polydicyclopentadiene resin matrix to improve the strength and rigidity of the web 10. According to an embodiment of the present invention, the reinforcement layer may include at least one of glass fiber, carbon fiber, basalt fiber, aramid fiber and flax fiber.

[0052] As an example, the reinforcement layer may be made of at least one of the following fibers: glass fiber (including 800-1200 g / m 2 Biaxial fabrics), biaxial carbon fiber fabrics (including 100g / m 2 -2000g / m 2 Multiaxial fabrics), carbon-glass hybrid fabrics (including intra-layer hybrid and inter-layer hybrid fabrics, with a gram weight of 100g / m 2 -2000g / m 2 , carbon fiber mixed weight ratio of 1% -99%), basalt fiber fabric (including 100g / m 2 -2000g / m 2 biaxial fabrics and multiaxial fabrics), aramid fiber fabrics (including 100g / m 2- 2000g / m 2 biaxial fabrics and multiaxial fabrics), natural fiber fabrics such as flax (including 100g / m 2 -2000g / m 2 biaxial fabrics and multiaxial fabrics).

[0053] The web 10 according to an embodiment of the present invention may include a core material 12 sandwiched between the reinforcements 11. In order to improve the bonding strength between the core material 12 and the reinforcements 11, the core material 12 may include at least one of a hole and a groove. When the polydicyclopentadiene resin system (used to form the polydicyclopentadiene resin matrix) is poured, the polydicyclopentadiene resin system will flow into the hole and / or the groove and solidify in a subsequent curing process. Therefore, the polydicyclopentadiene resin matrix according to the present invention may extend into the hole and / or the groove to form a structure similar to an anchor bolt, thereby improving the bonding strength between the core material 12 and the reinforcement 11. As an example, the groove may be a straight or cross-shaped groove, however, the form of the groove is not limited thereto.

[0054] According to an embodiment of the present invention, the core material 12 can be at least one of PET foam, HPE foam, PVC foam, SAN foam and balsa wood. The main component of PET foam is polyethylene terephthalate, commonly known as polyester resin, which has good heat resistance, mechanical strength and environmental protection performance. HPE foam refers to a new type of rigid foam with an interpenetrating polymer network formed by the blending and foaming of dicyclopentadiene and polyether. It has small pore size, low glue absorption, environmental protection and recyclability, good toughness, and outstanding anti-fatigue performance. PVC foam refers to a foam made of polyvinyl chloride resin as the main body, with the addition of foaming agent and other additives. It is an earlier used foam plastic, divided into hard and soft. The PVC foam used in the present invention can be a cross-linked rigid PVC foam.

[0055] According to the embodiment of the present invention, preferably, PET foam and HPE foam may be used as the core material of the web 10 to minimize the cost of the blade.

[0056] According to an embodiment of the present invention, Figure 3 As shown, the core material 12 may include a first core material 12a and a second core material 12b. The second core material 12b is located at the lifting point of the web 10, and the strength of the second core material 12b is greater than the strength of the first core material 12a. The lifting point of the web 10 is the main force point when the web 10 is hoisted. According to the present invention, by making the strength of the second core material 12b greater than the strength of the first core material 12a, the bearing capacity of the local structure can be improved, and damage to the web 10 when the web 10 is hoisted can be avoided.

[0057] According to an embodiment of the present invention, the first core material 12a may be PET foam, and the second core material may be balsa wood, for example, with a density of 135-176 Kg / m 3 of balsa wood.

[0058] Figure 5 Schematic diagram showing a method for manufacturing a web according to an embodiment of the present invention. Figure 5 A method of manufacturing a web according to an embodiment of the present invention is described. In order to avoid redundancy, descriptions repeated with the above description will be omitted.

[0059] like Figure 5 As shown, the method for manufacturing a web according to an embodiment of the present invention includes: laying a core material 12 and a reinforcement layer in a web mold 33, wherein the reinforcement layer is arranged on both sides of the core material 12; pouring resin, wherein the resin is a polydicyclopentadiene resin system; and curing the resin.

[0060] First, the core material 12 and the reinforcement layer may be laid in the web mold 33. Specifically, the reinforcement layer on one side of the core material 12 may be laid on the web mold 33 first. Then, the core material 12 may be laid. Finally, the reinforcement layer may be laid on the other side of the core material 12.

[0061] Next, the core material 12 and the reinforcement layer can be infused with a polydicyclopentadiene resin system, which forms the polydicyclopentadiene resin matrix described above after curing. According to an embodiment of the present invention, the polydicyclopentadiene resin system may include dicyclopentadiene or a dicyclopentadiene prepolymer and a catalyst. The dicyclopentadiene prepolymer is formed by dicyclopentadiene and an elastomer that is copolymerized and modified with dicyclopentadiene. The dicyclopentadiene prepolymer and the catalyst have been described above, and a detailed description will be omitted here.

[0062] According to an embodiment of the present invention, before the resin is poured, the dicyclopentadiene or prepolymer and the catalyst can be divided into component A and component B. Component A is dicyclopentadiene or prepolymer, and component B is a catalyst. Alternatively, component A is a part of dicyclopentadiene or prepolymer, and component B is the catalyst and the rest of dicyclopentadiene or prepolymer. Component A and component B can be degassed separately and poured after mixing. The weight ratio of component A to component B can be 100:0.1-5. Since the integrated pouring system 31 does not require a separate degassed process for the resin in advance, the temperature rise of the resin caused by degassed after mixing is avoided, and a large number of bubbles introduced by repeatedly pouring the resin are reduced, the whitening of the pouring caused by bubbles in the resin is reduced, and the pouring quality is improved.

[0063] According to the embodiment of the present invention, when pouring resin, the vacuum system 32 may be used to draw a vacuum and the integrated pouring system 31 may be used to pour resin.

[0064] A vacuum system 32 may be arranged outside the web mold 33, and the vacuum level may be set by adjusting the second valve 35. Since the viscosity of the polydicyclopentadiene resin system is low, if the vacuum level is set to a large value during the infusion process, the infused polydicyclopentadiene resin may be easily drawn away. According to an embodiment of the present invention, the vacuum level may be set to 0.5-0.8 atmospheres before the infusion amount of the resin reaches half, so as to prevent the polydicyclopentadiene resin from being drawn away.

[0065] According to an embodiment of the present invention, after vacuuming, the resin may be infused using the integrated infusion system 31 .

[0066] According to an embodiment of the present invention, when pouring the resin, the pouring rate of the resin can be gradually increased. As mentioned above, due to the low viscosity of the polydicyclopentadiene resin system, its fluidity is good. In the initial stage of pouring, the pouring rate of the resin should not be too high to prevent the resin from being drawn away. The stability of the resin pouring can be ensured by gradually increasing the pouring rate of the resin.

[0067] According to an embodiment of the present invention, the injection rate of the resin can be adjusted by controlling the first valve 34 , and the opening of the first valve 34 can be gradually increased during the injection of the resin.

[0068] According to the embodiment of the present invention, considering the low viscosity and good fluidity of the polydicyclopentadiene resin system, the diameter of the tube for infusing the resin may be 5 mm-20 mm.

[0069] According to an embodiment of the present invention, the temperature of the resin infusion may be 25° C.-35° C. The temperature of the resin infusion may be monitored by a temperature sensor 36. When the temperature of the resin infusion is less than 25° C., the fluidity of the polydicyclopentadiene resin decreases, and when the temperature of the resin infusion is higher than 35° C., the polydicyclopentadiene resin may become unstable.

[0070] According to an embodiment of the present invention, after the infusion is completed, the resin enters the curing stage. As an example, the resin can be kept at 40-60° C. for 1-2 hours and then heated to 80-85° C. for 3-4 hours.

[0071] Specifically, the mold heating program of the web mold 33 can be set to keep warm at 40-60°C for 1-2 hours (pre-curing), and then heated to 80-85°C for 3-4 hours. During the curing process, the surface of the vacuum bag can be covered with insulation cotton. When the surface temperature exceeds 60°C, it needs to be removed for heat dissipation and re-covered after the exothermic peak. In addition, during the pre-curing process, the tube body and the infusion port for resin infusion should avoid being covered with insulation cotton to facilitate heat dissipation.

[0072] Optionally, after the temperature naturally drops to below 50° C., demoulding is performed to obtain the web 10 according to the embodiment of the present invention.

[0073] One aspect of the present invention further provides a wind blade including the web 10 as described above.

[0074] One embodiment of the present invention may also provide a wind turbine generator set including the wind turbine blade as described above.

[0075] As described above, according to the present invention, at least one of the following technical effects can be achieved.

[0076] According to the present invention, the cost of the polydicyclopentadiene resin system (combination material) used for the polydicyclopentadiene resin matrix is ​​more than 30% cheaper than that of the epoxy resin system, and each blade web can save 10,000 to 30,000 yuan, with a significant cost reduction effect.

[0077] According to the present invention, when the polydicyclopentadiene resin system (combination material) is used to infuse the reinforcement layer and the core material to make the web, since the polydicyclopentadiene resin system (combination material) has a low viscosity at room temperature, only 10 to 100 cps, its infusion speed is very fast, which can shorten the infusion time of the web by about 0.5 to 1.5 hours.

[0078] According to the present invention, the polydicyclopentadiene resin does not need post-curing, has a short curing time, and can greatly improve production efficiency.

[0079] According to the present invention, the density of the polydicyclopentadiene resin system (combination material) is 1.03-1.05 g / cm 3 The density after curing is lower than that of the epoxy resin system after curing, and the weight of the web obtained is 3-5% lighter, thereby achieving lightweighting of the blade.

[0080] In addition, according to the present invention, there is provided a process capable of solving the problem of whitening due to poor wetting when forming a web using a polydicyclopentadiene resin.

[0081] While exemplary embodiments of the present invention have been described in detail with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the claims.

Claims

1. A method for manufacturing a web, characterized in that: The manufacturing method comprises: Laying a core material and a reinforcement layer in a web plate mold, wherein the reinforcement layer is arranged on both sides of the core material; Arranging a vacuum system on the outside of the web mold; Vacuuming and then pouring resin after vacuuming, wherein the resin is a polydicyclopentadiene resin system, the polydicyclopentadiene resin system includes dicyclopentadiene or dicyclopentadiene prepolymer, and the polydicyclopentadiene resin system also includes a catalyst, and before the pouring amount of the resin reaches half, the vacuum degree is set to 0.5-0.8 atmospheres; curing the resin, Before the resin is poured, the dicyclopentadiene or dicyclopentadiene prepolymer and the catalyst are divided into component A and component B, wherein the component A is the dicyclopentadiene or dicyclopentadiene prepolymer and the component B is the catalyst, or the component A is a part of the dicyclopentadiene or dicyclopentadiene prepolymer and the component B is the catalyst and the rest of the dicyclopentadiene or dicyclopentadiene prepolymer, the component A and the component B are degassed respectively, and then poured after mixing, and When pouring the resin, the pouring rate of the resin is gradually increased.

2. The manufacturing method according to claim 1, characterized in that: The resin infusion temperature is 25℃-35℃.

3. The manufacturing method according to claim 1, characterized in that: The step of curing the resin comprises: keeping the temperature at 40-60° C. for 1-2 hours and then heating to 80-85° C. for 3-4 hours.

4. The manufacturing method according to claim 1, characterized in that: The diameter of the tube filled with the resin is 5-20 mm.

5. The manufacturing method according to claim 1, characterized in that: The content of the catalyst is 0.01-5 parts by weight based on 100 parts by weight of the dicyclopentadiene or the dicyclopentadiene prepolymer.

6. The manufacturing method according to claim 5, characterized in that: The dicyclopentadiene prepolymer is formed by dicyclopentadiene and an elastomer, and the weight ratio of the elastomer to the dicyclopentadiene is 0.01-0.

7.

7. The manufacturing method according to claim 6, characterized in that: The catalyst includes a ruthenium catalyst, a classical two-component catalyst, a molybdenum phenol compound or a tungsten-triphenylphosphine series complex, and the elastomer includes a thermoplastic elastomer.

8. A web manufactured by the method for manufacturing a web according to any one of claims 1 to 7, characterized in that: The web (10) comprises a core material and reinforcement parts (11) respectively arranged on both sides of the core material (12); the reinforcement parts (11) comprise a polydicyclopentadiene resin matrix and a reinforcement layer arranged in the polydicyclopentadiene resin matrix.

9. The web according to claim 8, characterized in that The core material (12) comprises a first core material (12a) and a second core material (12b), wherein the second core material (12b) is located at a lifting point of the web, and the strength of the second core material (12b) is greater than the strength of the first core material (12a).

10. The web according to claim 8, characterized in that The reinforcement layer includes at least one of glass fiber, carbon fiber, basalt fiber, aramid fiber and flax fiber.

11. The web according to claim 8, characterized in that The core material (12) includes at least one of a hole and a groove, and the polydicyclopentadiene resin matrix extends into the hole and / or the groove.

12. The web according to claim 9, characterized in that The first core material (12a) is PET foam, and the second core material (12b) is balsa wood.

13. A fan blade, characterized in that: The wind blade comprises a web (10) according to any one of claims 8-12.

14. A wind turbine generator set, characterized in that: The wind turbine generator set comprises the wind turbine blade according to claim 13.

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