CN114619613A - Waste wind power blade recycling method - Google Patents
Waste wind power blade recycling method Download PDFInfo
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- CN114619613A CN114619613A CN202210085630.8A CN202210085630A CN114619613A CN 114619613 A CN114619613 A CN 114619613A CN 202210085630 A CN202210085630 A CN 202210085630A CN 114619613 A CN114619613 A CN 114619613A
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- 239000002699 waste material Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000004064 recycling Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 74
- 238000003825 pressing Methods 0.000 claims abstract description 41
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 17
- 238000000748 compression moulding Methods 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- -1 polypropylene Polymers 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 4
- 239000004700 high-density polyethylene Substances 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 239000002994 raw material Substances 0.000 abstract description 12
- 239000003365 glass fiber Substances 0.000 abstract description 8
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention provides a method for recycling waste wind power blades, and relates to the field of recycling of waste wind power blades. The method comprises the following steps: mixing the waste wind power blade material within a preset size range with a thermoplastic material to obtain a mould pressing material; and (5) compression molding the molded material to obtain the wind power matching product. The method not only can greatly reduce solid wastes so as to solve the problem of ecological environment pollution caused by the waste wind power blades, but also can make full use of the residual mechanical property and value of the waste wind power blades as glass fiber composite materials by manufacturing the waste wind power blades into the blade root platforms or manhole cover plates in a compression molding mode, and realize the recycling and high-valued recycling of the waste wind power blades. In addition, compared with the traditional manufacturing method of the blade root platform and the manhole cover plate, the wind power supporting products such as the blade root platform, the manhole cover plate and the like manufactured by the method can reduce the cost of raw materials because most of the raw materials are waste wind power blade materials.
Description
Technical Field
The invention relates to the technical field of recycling of waste wind power blades, in particular to a recycling method of waste wind power blades.
Background
In the prior art, the wind power blade usually adopts glass fiber reinforced epoxy resin as a raw material, the glass fiber reinforced epoxy resin is a thermosetting composite material, and the original properties of the material cannot be reduced after curing and molding, so the glass fiber reinforced epoxy resin cannot be degraded, and the glass fiber reinforced epoxy resin is a great threat to the ecological civilization construction of China. Traditional landfill and combustion processes occupy a large amount of land resources, cause serious groundwater and air pollution, and do not fully exert the residual mechanical properties and values of glass fiber composite materials. In the face of a large number of retired blades in the future, the recycling and high-value reutilization of the retired blades becomes a problem which is generally concerned by the industry. Therefore, the development of a low-cost and high-efficiency waste wind power blade regeneration method and the manufacture of products with high added values and meeting performance requirements have important significance.
Disclosure of Invention
The invention aims to provide a method for recycling waste wind power blades, which aims to solve the technical problems that the waste wind power blades seriously pollute the ecological environment and have low value utilization rate in the prior art.
The invention provides a method for recycling waste wind power blades, which comprises the following steps:
mixing the waste wind power blade material within a preset size range with a thermoplastic material to obtain a mould pressing material;
and carrying out compression molding on the molded material to obtain the wind power matching product.
Further, the mixing temperature was controlled at 150-200 ℃ during mixing.
Further, the thermoplastic material includes at least one of High Density Polyethylene (abbreviated HDPE), Polypropylene (abbreviated PP), Polyethylene Terephthalate (abbreviated PET), and polyurethane (abbreviated PU).
Further, the preset size range of the waste wind power blade material is that the length is less than or equal to 50mm and the width is less than or equal to 10 mm.
Furthermore, the molding material is also mixed with epoxy resin, a curing agent, an accelerant and a low-shrinkage additive.
Further, the low profile additive includes at least one of Polystyrene (abbreviated as PS), Polyethylene (abbreviated as PE), and polypropylene.
Further, the thickness of the mould pressing material is controlled to be 5-50 mm.
Further, the waste wind power blade material is chopped fibers obtained by cutting waste wind power blades.
Further, the compression molding of the mold compound includes: and transferring the mould pressing material into a mould, and preheating and prepressing the mould at 50-60 ℃ and 6-10 Mpa.
Further, the compression molding of the mold pressing material also comprises: after the feeding into the mold is finished, closing the mold, exhausting and performing pressure maintaining solidification, wherein the pressure in the mold is controlled to be 20-25Mpa when the pressure maintaining solidification is performed.
The method for recycling the waste wind power blades provided by the invention has the following beneficial effects that:
according to the method for recycling the waste wind power blade, the waste wind power blade material in the preset size range is mixed with the thermoplastic material, and the mould pressing material obtained through mixing is subjected to mould pressing, so that wind power supporting products such as a blade root platform or a manhole cover plate required by the wind power blade can be manufactured, solid wastes can be greatly reduced, the problem of ecological environment pollution caused by the waste wind power blade is solved, the waste wind power blade is manufactured into the blade root platform or the manhole cover plate in a mould pressing mode, the residual mechanical property and value of the waste wind power blade serving as the glass fiber composite material can be fully utilized, and the recycling and high-valued recycling of the waste wind power blade are realized. In addition, compared with the traditional manufacturing method of the blade root platform and the manhole cover plate, the wind power supporting products such as the blade root platform, the manhole cover plate and the like manufactured by the method can reduce the cost of raw materials because most of the raw materials are waste wind power blade materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for recycling waste wind power blades provided by the present invention;
FIG. 2 is a detailed flow chart of the method for recycling the waste wind power blades to manufacture wind power accessories.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a method for recycling waste wind power blades, as shown in fig. 1, including:
s102, mixing the waste wind power blade material in the preset size range with a thermoplastic material to obtain a mould pressing material.
Specifically, in this embodiment, during the mixing, the prepared waste wind turbine blade material may be fluffed, and then fully kneaded with the thermoplastic resin glue solution in the internal mixer until the resin is completely mixed, and then dried or air-dried to have a proper viscosity, so as to obtain the required mold-pressed material. The thermoplastic material is added, so that the flowability and the plasticity of the molding material can be properly increased, and the molding material is more uniformly mixed and has certain plasticity.
S104, compression molding the molded material to obtain a wind power matching product, for example: a blade root platform and a manhole cover plate and the like required when the wind power blade is manufactured.
According to the method for recycling the waste wind power blades, the waste wind power blade materials in the preset size range are mixed with the thermoplastic materials, the mould pressing materials obtained through mixing are subjected to mould pressing, wind power supporting products such as blade root platforms or manhole cover plates required by the wind power blades can be manufactured, solid wastes can be greatly reduced, the problem of ecological environment pollution caused by the waste wind power blades is solved, the waste wind power blades are manufactured into the blade root platforms or the manhole cover plates in a mould pressing forming mode, the residual mechanical properties and the values of the waste wind power blades serving as glass fiber composite materials can be fully utilized, and recycling and high-valued recycling of the waste wind power blades are achieved. In addition, compared with the traditional manufacturing method of the blade root platform and the manhole cover plate, the wind power supporting products such as the blade root platform, the manhole cover plate and the like manufactured by the method can reduce the cost of raw materials because most of the raw materials are waste wind power blade materials.
Specifically, in this embodiment, the preset size range of the waste wind power blade material is that the length is less than or equal to 50mm and the width is less than or equal to 10mm, and the waste wind power blade material is chopped fibers obtained by cutting waste wind power blades. Of course, the waste wind power blade material can be obtained by other modes except cutting, and as long as the size of the waste wind power blade material is within the preset size range, the method provided by the embodiment can be used for manufacturing wind power supporting products such as a blade root platform or a manhole cover plate, and the method for obtaining the waste wind power blade material is not particularly limited.
Specifically, in this embodiment, the thermoplastic material includes at least one of high density polyethylene, polypropylene, polyethylene terephthalate, and polyurethane.
Specifically, in this embodiment, the molding material is further mixed with an epoxy resin, a curing agent, an accelerator and a low-shrinkage additive to ensure the fluidity of the molding material and the mechanical properties of the final product. Wherein the low shrinkage additive comprises at least one of polystyrene, polyethylene and polypropylene for compensating polymerization shrinkage for internal stress relief for over-local relaxation, thereby reducing shrinkage.
Specifically, in this example, the mixing temperature was controlled to 150-. More specifically, the mixing temperature can be determined according to the strength requirement of a finished product, and when the manhole cover plate is manufactured, the temperature of the internal mixer can be controlled to be 180 ℃ because the strength requirement of the manhole cover plate is low; when the platform at the root of the blade is manufactured, the temperature of the internal mixer can be controlled to be 200 ℃ because the requirement on the strength of the platform at the root of the blade is higher.
Specifically, in this embodiment, the thickness of the molding material is controlled to be 5 to 50 mm. More specifically, the thickness of the mould pressing material is controlled according to the thickness of a finished product, and when the manhole cover plate is manufactured, the thickness of the mould pressing material is controlled to be 9 mm; when the platform at the root part of the blade is manufactured, the thickness of the die pressing material is controlled to be 36 mm.
After the mold pressing material is obtained, the mold pressing material may be molded, specifically, in this embodiment, the molding of the mold pressing material includes: transferring the mold pressing material into a mold, preheating and prepressing the mold at 50-60 deg.C and 6-10 Mpa.
Specifically, in this embodiment, the molding process further includes: before transferring the molding material into the mold, the mold is preheated and coated with a mold release agent to ensure that the finished product can be smoothly released. While the release agent is solidified, the preparation of waste wind power blade materials can be carried out; and after the release agent is cured, feeding the release agent into the mold.
Specifically, in this embodiment, the molding process further includes: after the feeding into the mold is finished, closing the mold, exhausting and performing pressure maintaining solidification, wherein the pressure in the mold is controlled to be 20-25Mpa when the pressure maintaining solidification is performed. More specifically, the mold closing process is completed in a hydraulic press, mold pressing materials are required to fill a mold cavity, all components (namely, the waste wind power blade material, the thermoplastic material, the epoxy resin, the curing agent, the accelerant and the low-shrinkage additive) of the mold pressing materials are subjected to full curing reaction, and the mold pressing temperature is controlled to be 150-200 ℃. In the die assembly process, the curing degree of a product can be ensured by controlling the pressure. No matter preheating, prepressing or pressure maintaining, the curing speed can be controlled by controlling the temperature and the pressure, so that byproducts in the curing process are reduced, and the volume shrinkage of a finished product is reduced.
When the method for recycling the waste wind power blade provided by the embodiment is used for manufacturing the manhole cover plate, the waste wind power blade is used as a main raw material, a small amount of thermoplastic material, epoxy resin, curing agent, accelerator and low-shrinkage additive are added, the mixture is mixed to obtain a mould pressing material with the thickness of 9mm, and the mould pressing material is subjected to mould pressing forming to obtain a finished product, wherein the finished product can be used for wind power blades of 70-80m grade. Wherein, the thermoplastic material is selected from a polypropylene film, the epoxy resin, the curing agent and the accelerant are selected from corresponding materials formed by vacuum infusion, and the low-shrinkage additive is selected from polystyrene. Referring to fig. 2, the specific process is as follows:
s202, preheating a die at the preheating temperature of 50 ℃;
s204, coating a release agent on the mold to ensure that the manhole cover plate can be smoothly released;
s206, preparing waste wind power blade materials: the waste wind power blades can be cut to obtain chopped fibers while the release agent is cured, wherein the length of the chopped fibers is 20-30mm, and the width of the chopped fibers is 1-10 mm;
s208, mixing: adding waste wind power blade materials, polypropylene film thermoplastic materials, epoxy resin, curing agents, accelerators and low-shrinkage additives into an internal mixer for mixing, controlling the temperature of the internal mixer to be 180 ℃, and finally obtaining a mould pressing material with the thickness of 9 mm;
s210, metering of die pressing materials: after mixing is finished and before feeding materials into the die, metering mould pressing materials required for manufacturing the manhole cover plate;
s212, feeding, preheating and prepressing a die: after the mold release agent is cured, transferring the measured mold pressing material into a mold cavity, preheating and prepressing the mold, wherein the preheating temperature is 60 ℃, the pressure applied in advance is 8Mpa, and the flowability of the mold pressing material in the cavity needs to be checked in the preheating and prepressing processes;
s214, die assembly is carried out; the molding process is completed in a hydraulic press 315T;
s216, exhausting;
s218, pressure maintaining and curing: controlling the mold pressing temperature to be 180 ℃ and the pressure to be 20 Mpa;
s220, demolding;
s222, solidifying, cooling and post-processing the product to obtain a manhole cover plate finished product;
s224, cleaning the die, and manufacturing the next product by using the die after the die is cleaned.
When the waste wind power blade recycling method provided by the embodiment is used for manufacturing the blade root platform, the waste wind power blade is used as a main raw material, a small amount of thermoplastic material, epoxy resin, curing agent, accelerator and low-shrinkage additive are added, the mixture is mixed to obtain a mould pressing material with the thickness of 36mm, and the mould pressing material is subjected to mould pressing forming to obtain a finished product, wherein the finished product can be used for 70-80 m-grade wind power blades. Wherein the thermoplastic material is high-density polyethylene film, the epoxy resin, the curing agent and the accelerant are corresponding materials formed by vacuum infusion, and the low-shrinkage additive is polystyrene. Referring to fig. 2, the specific process is as follows:
s202, preheating a die at the preheating temperature of 50 ℃;
s204, coating a release agent on the mold to ensure that the blade root platform can be smoothly released;
s206, preparing waste wind power blade materials: the waste wind power blades can be cut to obtain chopped fibers while the release agent is cured, wherein the length of the chopped fibers is 20-30mm, and the width of the chopped fibers is 1-10 mm;
s208, mixing: adding waste wind power blade materials, high-density polyethylene film thermoplastic materials, epoxy resin, curing agents, accelerators and low-shrinkage additives into an internal mixer for mixing, controlling the temperature of the internal mixer to be 200 ℃, and finally obtaining mould pressing materials with the thickness of 36 mm;
s210, metering mould pressing materials: after mixing is finished and before feeding materials into the die, metering mould pressing materials required for manufacturing the blade root platform;
s212, feeding, preheating and prepressing a die: after the mold release agent is cured, transferring the measured mold pressing material into a mold cavity, preheating and prepressing the mold, wherein the preheating temperature is 60 ℃, the pressure applied in advance is 10Mpa, and the flowability of the mold pressing material in the cavity needs to be checked in the preheating and prepressing processes;
s214, die assembly is carried out; the molding process is completed in a hydraulic press 315T;
s216, exhausting;
s218, pressure maintaining and curing: controlling the mold pressing temperature to be 200 ℃ and the pressure to be 25 Mpa;
s220, demolding;
s222, solidifying, cooling and post-treating the product to obtain a finished product of the blade root platform;
s224, cleaning the die, and manufacturing the next product by using the die after the die is cleaned.
Traditional blade root platform and manhole apron are used for sealing blade root inner chamber, can do the wheel hub debugging operation platform simultaneously and use. The weight that blade root platform and manhole apron can bear is more than or equal to 300 kg. In the prior art, an epoxy resin system is selected for manufacturing a blade root platform and a manhole cover plate, a vacuum bag pressing or vacuum filling method is adopted, fiber cloth is spliced by adopting two-axial cloth or three-axial cloth, the surface is smooth and clear, no defect point exists, the outer circle of a root platform body is manufactured according to a whole circle firstly and then is cut and formed according to a drawing, and two cut edge materials are still indispensable as one part of a product. And (3) using demolding cloth to manufacture rough surfaces in the area of 20cm at the outermost side of the inner surface and the outer surface of the root platform, so that the rough surfaces are convenient to be pasted and bonded by hands. The blade root platform and the manhole cover plate are complex in manufacturing process flow, raw materials are purchased from the market, the cost is high, the waste wind power blade recycling method provided by the embodiment is utilized, the waste wind power blade is recycled to be manufactured into the blade root platform or the manhole cover plate, and the cost can be greatly reduced.
The compression molding method is different from a vacuum bag compression or vacuum infusion method, and is a molding method that powder, granular or fiber raw materials are firstly put into a mold cavity of a mold at a molding temperature, and then the mold is closed and pressurized to be molded and cured. The compression molding has the advantages of small loss of raw materials, stable mechanical property of finished products, high dimensional precision of products, good repeatability, lower manufacturing cost of molding equipment, high production efficiency, convenience for realizing automatic production and the like. According to the method for recycling the waste wind power blade, the formula of the waste wind power blade material, the fiber length and the mixing kneading time are adjusted, the operating pressure and temperature are controlled, the flowability, the contractility and the compressibility of the die-pressed material are controlled, and the performance of the die-pressed product of the waste wind power blade material is ensured to meet the performance requirements of a blade root platform and a manhole cover plate.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for recycling waste wind power blades is characterized by comprising the following steps:
mixing the waste wind power blade material within a preset size range with a thermoplastic material to obtain a mould pressing material;
and carrying out compression molding on the molded material to obtain the wind power matching product.
2. The recycling method of waste wind power blades as claimed in claim 1, wherein the mixing temperature is controlled to be 150-200 ℃ during mixing.
3. The method of recycling waste wind blades according to claim 1, wherein the thermoplastic material comprises at least one of high density polyethylene, polypropylene, polyethylene terephthalate, and polyurethane.
4. The waste wind power blade recycling method according to claim 1, wherein the preset size range of the waste wind power blade material is that the length is less than or equal to 50mm and the width is less than or equal to 10 mm.
5. The recycling method of the waste wind power blades as claimed in any one of claims 1 to 4, wherein the molding compound is further mixed with epoxy resin, curing agent, accelerator and low shrinkage additive.
6. The recycling method of waste wind power blades according to claim 5, wherein the low shrinkage additive comprises at least one of polystyrene, polyethylene and polypropylene.
7. The recycling method of waste wind power blades according to any one of claims 1 to 4, characterized in that the thickness of the die-pressed material is controlled to be 5-50 mm.
8. The recycling method of waste wind power blades according to any one of claims 1 to 4, wherein the waste wind power blade material is chopped fibers obtained by cutting waste wind power blades.
9. The recycling method of the waste wind power blades as claimed in claims 1 to 4, wherein the compression molding of the molding compound comprises: and transferring the mould pressing material into a mould, and preheating and prepressing the mould at 50-60 ℃ and 6-10 Mpa.
10. The recycling method of the waste wind power blade as claimed in claim 9, wherein the step of molding the molded material further comprises: and after feeding into the mold is finished, closing the mold, exhausting and performing pressure maintaining solidification, wherein the pressure in the mold is controlled to be 20-25Mpa when the pressure maintaining solidification is performed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210085630.8A CN114619613A (en) | 2022-01-25 | 2022-01-25 | Waste wind power blade recycling method |
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| CN202210085630.8A CN114619613A (en) | 2022-01-25 | 2022-01-25 | Waste wind power blade recycling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784251A (en) * | 2023-02-02 | 2023-03-14 | 国能龙源环保有限公司 | Method for preparing molecular sieve by utilizing waste wind power blades |
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| CN102514205A (en) * | 2011-11-10 | 2012-06-27 | 洛阳双瑞风电叶片有限公司 | Method for molding composite material wind power blade root |
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| CN113246495A (en) * | 2021-06-03 | 2021-08-13 | 国电联合动力技术(赤峰)有限公司 | Wind power blade root platform and preparation method thereof |
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