CN115401934A - Wind power generation blade and preparation method thereof - Google Patents
Wind power generation blade and preparation method thereof Download PDFInfo
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- CN115401934A CN115401934A CN202211246447.8A CN202211246447A CN115401934A CN 115401934 A CN115401934 A CN 115401934A CN 202211246447 A CN202211246447 A CN 202211246447A CN 115401934 A CN115401934 A CN 115401934A
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- 238000010248 power generation Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 138
- 238000010438 heat treatment Methods 0.000 claims abstract description 81
- 239000011347 resin Substances 0.000 claims abstract description 61
- 229920005989 resin Polymers 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 238000004804 winding Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000001723 curing Methods 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
- 238000003847 radiation curing Methods 0.000 claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 238000007598 dipping method Methods 0.000 claims abstract description 24
- 238000001029 thermal curing Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000013329 compounding Methods 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims description 23
- 239000003365 glass fiber Substances 0.000 claims description 22
- 238000001125 extrusion Methods 0.000 claims description 13
- 238000013007 heat curing Methods 0.000 claims description 13
- 238000007791 dehumidification Methods 0.000 claims description 11
- 238000005286 illumination Methods 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 25
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 description 12
- 239000012535 impurity Substances 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/56—Tensioning reinforcements before or during shaping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention belongs to the technical field of composite material molding. The invention provides a wind power generation blade and a preparation method thereof, which comprises the steps of sequentially carrying out yarn feeding, yarn threading, tension applying, tension detecting, resin compounding, gum dipping, product forming, radiation curing, thermosetting, cooling, traction, cutting, online detection, winding and unwinding on fiber yarns; the thermal curing mode is contact heating, radiation or convection, the thermal curing mode is gradient heating or isothermal heating, and the gradient heating mode is high temperature and then low temperature; the traction speed is 2-5 m/min. The preparation method realizes the rapid molding of the product by a dual-curing process combining ultraviolet radiation curing and thermal curing, perfectly combines the advantages of the excellent mechanical properties of the rapid molding and the thermal curing of the radiation curing, and effectively improves the production efficiency; the straightness of the wind power generation blade is good, the product is solidified at a low temperature, the product deformation caused by uneven stress is avoided, and the product yield is greatly improved.
Description
Technical Field
The invention relates to the technical field of composite material forming, in particular to a wind power generation blade and a preparation method thereof.
Background
Currently, the development of glass fiber pultrusion processes generally aims to increase the curing speed of the resin and reduce the manufacturing cost by increasing the production speed. The resin of various systems in the market can be used for a rapid pultrusion process, the curing speed of the resin of an unsaturated system is higher than that of an epoxy system, and the curing speed of a radiation curing process is higher than that of a thermal curing process. However, the wind power generation blade has higher requirements on the fatigue performance of the product, and no suitable wind power generation blade forming process in the market can meet the higher requirement on the fatigue resistance.
Therefore, the research and development of the preparation method of the wind power generation blade with good fatigue resistance and mechanical properties has important significance.
Disclosure of Invention
The invention aims to provide a wind power generation blade and a preparation method thereof aiming at the defects of the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a wind power generation blade, which comprises the following steps:
sequentially carrying out yarn feeding, yarn threading, tension applying, tension detecting, resin compounding, gum dipping, product forming, radiation curing, thermocuring, cooling, traction, cutting, online detection, winding and unwinding on fiber yarns;
the fiber yarn is a reinforced fiber, and the reinforced fiber comprises aramid fiber, nylon, glass fiber or quartz fiber;
the thermal curing mode is contact heating, radiation or convection, the thermal curing mode is gradient heating or isothermal heating, and the gradient heating mode is high temperature and low temperature; the temperature of the heat curing is 100-250 ℃, and the time of the heat curing is more than or equal to 60s;
the traction speed is 2-5 m/min.
Preferably, the threading is that the fiber yarn passes through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor and a cutting machine in sequence.
Preferably, the threading further comprises passing the fiber yarn through a fiber dehumidifying and heating structure and a winding machine, passing the fiber yarn through a tension detector, then passing the fiber yarn through the fiber dehumidifying and heating structure, then passing the fiber yarn through a cutting machine, and then passing the fiber yarn through the winding machine;
the fiber yarn is combined with the demolding cloth after being threaded, and the demolding cloth sequentially passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mold before combination.
Preferably, the applied value of the tension is 7 to 13N; the tension detection comprises online real-time detection and timing detection, and the time interval of the timing detection is 11-13 h.
Preferably, the method further comprises dehumidifying after detecting the tension, wherein the dehumidifying temperature is 100-130 ℃, and the dehumidifying time is more than or equal to 60s.
Preferably, before compounding with the resin, the temperature of the resin is 40-70 ℃, and the resin is added into a product molding groove;
the gum dipping is carried out by adopting an extrusion mode through the eyelet or the separating rod, and the number of the extrusion is 4-8.
Preferably, the product molding comprises preforming and molding, wherein the preformed molds are 1 to 3 groups, and the molded molds are 1 group.
Preferably, the radiation curing is ultraviolet curing, and the illumination intensity is 12 to 22J/cm 2 (ii) a The temperature reduction is airflow gradient temperature reduction, and the temperature of the airflow is 30-40 ℃ and 5-20 ℃ in sequence.
Preferably, the length of the cut is 180 to 220m; the items of online detection include apparent mass, product size, and straightness.
The invention also provides the wind power generation blade prepared by the preparation method, and the cross section of the blade is rectangular, circular or polygonal with an arc.
The beneficial effects of the invention include the following:
1) According to the preparation method, the product is quickly molded by a double curing process combining ultraviolet radiation curing and thermosetting, the defects of low molding speed of the thermosetting process and poor mechanical property of ultraviolet radiation curing are overcome, the advantages of quick molding of radiation curing and excellent mechanical property of thermosetting are perfectly combined, and the production efficiency is effectively improved.
2) The preparation method can realize the rapid and continuous production of the wind power generation blade, the wind power generation blade belongs to the external curing molding of the mold, a release agent is not required to be added into the resin, and the requirement of the surface roughness of the product is met by changing the internal structure of the mold without using release cloth in the production process; the material cost is reduced by 10 percent.
3) The resin of the invention has long operation time, and has the direct advantages that the resin can be stopped for processing at any time when temporary equipment failure occurs in the production process, and the stop of the traditional process has to completely clean materials in the production process and needs to wait for the equipment to cool for a long time; the resin is stored in a closed environment, the material supplementing and the mixing are completed by adopting equipment, the quality stability is good, the volatilization of the resin is less in the production process, and the utilization rate of the resin is higher.
4) The wind power generation blade has good straightness, the product is cured at low temperature, the product deformation caused by uneven stress does not exist, and the product yield is greatly improved.
Detailed Description
The invention provides a preparation method of a wind power generation blade, which comprises the following steps:
sequentially carrying out yarn feeding, yarn threading, tension applying, tension detecting, resin compounding, gum dipping, product forming, radiation curing, thermocuring, cooling, traction, cutting, online detection, winding and unwinding on fiber yarns;
the fiber yarn is a reinforced fiber, and the reinforced fiber comprises aramid fiber, nylon, glass fiber or quartz fiber;
the thermal curing mode is contact heating, radiation or convection, the thermal curing mode is gradient heating or isothermal heating, and the gradient heating mode is high temperature and low temperature; the temperature of the heat curing is 100-250 ℃, and the time of the heat curing is more than or equal to 60s;
the traction speed is 2-5 m/min.
In the invention, the upper yarn preferably places the fiber yarns of the whole yarn roll according to the number marks, and combines each fiber yarn to the tail end of the upper yarn area according to the specific trend in order, so that the upper yarn can distinguish which yarn roll each fiber yarn comes from; the number of turns of the yarn group is preferably 200 to 500, and more preferably 280 to 440.
In the invention, the threading is preferably fiber yarn which sequentially passes through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor and a cutting machine; the threading further preferably further comprises passing the fiber yarn through a fiber dehumidifying and heating structure and a winding machine, passing the fiber yarn through a tension detector, then passing the fiber yarn through the fiber dehumidifying and heating structure, and then passing the fiber yarn through a cutting machine, and then passing the fiber yarn through the winding machine.
The yarn threading process of the invention ensures that the fiber yarns do not have the phenomena of crossing and knotting.
In the invention, after the fiber yarn is threaded, the method preferably further comprises the step of merging the demolding cloth and the fiber yarn to complete the subsequent process, and the demolding cloth preferably sequentially passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mold before merging.
In the present invention, the value of the applied tension is preferably 7 to 13N, more preferably 9 to 11N, and still more preferably 10N; the applied value of the tension is controlled within +/-3N of the design value; uniformly applying tension to all the fiber yarns through a tension applying device; the tension detection comprises online real-time detection and timing detection, in the timing detection, the time interval of every two detections is preferably 11-13 h, and further preferably 12h, and the actual tension value of each fiber yarn is ensured to be within a set range in the production process.
In the present invention, the detection of the tension preferably further comprises dehumidification, and the temperature of the dehumidification is preferably 100 to 130 ℃, and more preferably 110 to 120 ℃; the time for dehumidification is preferably not less than 60s, more preferably not less than 90s.
In the invention, moisture on the surfaces of the fiber yarns and the release cloth in the production process is removed through dehumidification.
In the present invention, before compounding with the resin, the resin is preferably heated to 40 to 70 ℃ by a heating device, and more preferably heated to 50 to 60 ℃; the resin is preferably added to the product forming tank by a pump.
The resin of the present invention can be recycled to filter impurities generated during the production process.
In the invention, the gum dipping is preferably carried out by extruding through holes or separating rods, and the number of extruding is preferably 4-8, more preferably 5-7, and more preferably 6; the gum dipping is carried out in a forming tank according to the designed trend, and impurities need to be cleaned regularly in the gum dipping process.
In the invention, the product molding comprises preforming and molding, wherein the preformed molds are preferably 1-3 groups, and the molded molds are preferably 1 group; the size change of the preforming mold is less than or equal to +/-10 percent; when the preforming molds are 2 to 3 groups, the thickness of the preforming molds is preferably reduced in sequence; the thickness of the preforming mold is larger than or equal to that of the forming mold.
In the invention, the radiation curing is preferably ultraviolet curing, and the radiation curing is carried out in a surface light source mode; in the radiation curing, the light intensity is preferably 12 to 22J/cm 2 More preferably 15 to 20J/cm 2 More preferably 17 to 18J/cm 2 。
In the invention, the heat curing mode is preferably contact heating, radiation or convection, the heat curing mode is preferably gradient heating or isothermal heating, and the gradient heating mode is preferably high temperature and then low temperature; the heat curing temperature is preferably 100 to 250 ℃, more preferably 150 to 220 ℃, and even more preferably 180 to 200 ℃; and (3) keeping the temperature after the product temperature reaches the thermosetting temperature, wherein the heat preservation time is preferably not less than 60s, and more preferably not less than 90s.
In the invention, after the temperature of the product reaches a set value, constant temperature treatment is carried out to ensure that the resin is completely cured.
In the present invention, the temperature reduction is preferably a gradient temperature reduction of an air stream, and the temperature of the air stream is preferably 30 to 40 ℃ in sequence, 5 to 20 ℃ in sequence, more preferably 34 to 36 ℃ in sequence, and 10 to 15 ℃ in sequence.
In the present invention, the pulling speed is preferably 2 to 5m/min, more preferably 3 to 4m/min, and still more preferably 4.5m/min; the traction enables the product to realize continuous production at a set speed through a traction machine.
In the present invention, the length of the cut is preferably 180 to 220m, more preferably 190 to 210m, and still more preferably 200m.
In the present invention, the items of the online detection preferably include apparent mass, product size, and straightness; the product dimensions preferably include width and thickness.
In the invention, winding is carried out according to the actual required length; and (5) after rolling down, packaging and warehousing.
The invention also provides the wind power generation blade prepared by the preparation method, and the cross section of the blade is preferably regular in shape, and is further preferably rectangular, circular or polygonal with an arc.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Step 1, yarn feeding: glass fiber (glass fiber specification is HMG 920 HT-2400) with the width of 120mm, the thickness of 5mm and the number of yarn rolls of 440 yarn rolls is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, adding a release cloth: the demoulding cloth sequentially passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mould, and then is combined with the fiber yarns to complete the subsequent processes.
Step 4, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 5, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 6, dehumidification: the temperature is controlled at 125 ℃, the heating time is 90s, and the moisture on the surfaces of the fiber yarn and the release cloth in the production process is removed.
Step 7, adding resin: the resin temperature was maintained at 60 ℃ and the resin was added to the product forming tank by a pump.
Step 8, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process after 6 times of extrusion.
Step 9, product molding: three groups of preforming moulds are selected, the thickness is 5.8mm, 5.5mm and 5.3mm respectively, and the thickness of the forming mould is 5.1mm.
Step 10, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 20J/cm 2 。
Step 11, thermosetting: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 12, cooling: firstly, using 35 ℃ airflow to cool, and then using 15 ℃ airflow to cool.
Step 13, drawing: the traction speed is controlled at 3m/min, and the continuous production of products is realized.
Step 14, cutting: the product is cut once for 200m in length.
Step 15, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 16, automatic winding: and winding and rolling are carried out according to the actual required length.
Step 17, automatic roll feeding: and (5) unloading, packaging and warehousing.
Example 2
Step 1, yarn feeding: glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 120mm, the thickness of 5mm and the number of yarn rolls of 460 is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the yarn roll from which each fiber yarn comes can be distinguished.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 11.5h, and ensuring that the actual tension value of each fiber yarn is within a set range in the production process.
And step 5, dehumidification: the temperature is controlled at 120 ℃, the heating time is 95s, and the moisture on the surface of the fiber yarn in the production process is removed.
Step 6, adding a resin: the resin temperature was maintained at 50 ℃ and the resin was added by a pump into the product forming tank.
Step 7, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process through 5 times of extrusion.
Step 8, product molding: three groups of preforming moulds are selected, the thickness is 5.8mm, 5.5mm and 5.3mm respectively, and the thickness of the forming mould is 5.1mm.
Step 9, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 20J/cm 2 。
Step 10, heat curing: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 11, cooling: firstly, using 35 ℃ air flow to cool, and then using 15 ℃ air flow to cool.
Step 12, drawing: the traction speed is controlled at 3m/min, and the continuous production of the product is realized.
Step 13, cutting: the product is cut once for 200m in length.
Step 14, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 15, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 16, automatic roll-off: and (5) unloading, packaging and warehousing.
Example 3
Step 1, yarn feeding: glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 120mm, the thickness of 5mm and the number of yarn rolls of 460 rolls is placed according to a number mark, and each fiber yarn is combined to the tail end of an upper yarn area according to a specific trend order, so that the yarn roll from which each fiber yarn comes can be distinguished.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12.5h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 5, adding resin: the resin temperature was maintained at 70 ℃ and the resin was added by a pump into the product forming tank.
Step 6, gum dipping: and (3) finishing gum dipping of the fiber yarns in a forming tank according to the designed trend, and periodically cleaning impurities in the gum dipping process through 7 times of extrusion.
Step 7, product molding: three groups of preforming moulds are selected, the thickness is 5.8mm, 5.5mm and 5.3mm respectively, and the thickness of the forming mould is 5.1mm.
Step 8, radiation curing: 365nm wave band is selected for ultraviolet light curing, and the illumination intensityIs 20J/cm 2 。
Step 9, thermosetting: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 10, cooling: the temperature is reduced by using 30 ℃ airflow and then by using 10 ℃ airflow.
Step 11, drawing: the traction speed is controlled at 2.7m/min, and the continuous production of the product is realized.
Step 12, cutting: the product is cut once for a length of 200m.
Step 13, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 14, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 15, automatic roll-off: and (5) unloading, packaging and warehousing.
Example 4
Step 1, yarn feeding: glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 60mm, the thickness of 5mm and the number of yarn rolls of 220 is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, adding a release fabric: the demoulding cloth passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mould in sequence, and then is combined with the fiber yarns to complete the subsequent procedures.
Step 4, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 5, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 6, dehumidification: the temperature is controlled at 125 ℃, the heating time is 90s, and the moisture on the surfaces of the fiber yarn and the release cloth in the production process is removed.
Step 7, adding resin: the resin temperature was maintained at 60 ℃ and the resin was added to the product forming tank by a pump.
Step 8, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process after 6 times of extrusion.
Step 9, product molding: two groups of preforming molds are selected, the thickness is respectively 5.5mm and 5.3mm, and the thickness of the forming mold is 5.1mm.
Step 10, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 20J/cm 2 。
Step 11, thermosetting: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 12, cooling: firstly, using 35 ℃ airflow to cool, and then using 15 ℃ airflow to cool.
Step 13, drawing: the traction speed is controlled at 3m/min, and the continuous production of the product is realized.
Step 14, cutting: the product is cut once for a length of 200m.
Step 15, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 16, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 17, automatic roll feeding: and (5) unloading, packaging and warehousing.
Example 5
Step 1, yarn feeding: glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 60mm, the thickness of 5mm and the number of yarn rolls of 230 is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 11.5h, and ensuring that the actual tension value of each fiber yarn is within a set range in the production process.
And step 5, dehumidification: the temperature is controlled at 120 ℃, the heating time is 95s, and the moisture on the surface of the fiber yarn in the production process is removed.
Step 6, adding resin: the resin temperature was maintained at 55 ℃ and the resin was added by a pump into the product forming tank.
Step 7, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process after 6 times of extrusion.
Step 8, product molding: two groups of preforming molds are selected, the thickness is respectively 5.5mm and 5.3mm, and the thickness of the forming mold is 5.1mm.
Step 9, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 20J/cm 2 。
Step 10, heat curing: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 11, cooling: firstly, using 35 ℃ airflow to cool, and then using 15 ℃ airflow to cool.
Step 12, drawing: the traction speed is controlled at 3m/min, and the continuous production of products is realized.
Step 13, cutting: the product is cut once for a length of 200m.
Step 14, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 15, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 16, automatic roll-off: and (5) unloading, packaging and warehousing.
Example 6
Step 1, yarn feeding: glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 60mm, the thickness of 5mm and the number of yarn rolls of 230 is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12.5h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 5, adding resin: the resin temperature was maintained at 70 ℃ and the resin was added by a pump into the product forming tank.
Step 6, gum dipping: and (3) finishing gum dipping of the fiber yarns in a forming tank according to the designed trend, and periodically cleaning impurities in the gum dipping process through 8 times of extrusion.
Step 7, product molding: two groups of preforming molds are selected, the thickness is respectively 5.5mm and 5.3mm, and the thickness of the forming mold is 5.1mm.
Step 8, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 20J/cm 2 。
Step 9, thermosetting: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 10, cooling: the temperature is reduced by using 30 ℃ airflow and then by using 10 ℃ airflow.
Step 11, drawing: the traction speed is controlled at 3m/min, and the continuous production of the product is realized.
Step 12, cutting: the product is cut once for a length of 200m.
Step 13, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 14, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 15, automatic roll-off: and (5) unloading, packaging and warehousing.
Example 7
Step 1, yarn feeding: the glass fiber (glass fiber specification is HMG 920 HT-2400) with the width of 120mm, the thickness of 3mm and the number of yarn rolls of 264 is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, adding a release cloth: the demoulding cloth passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mould in sequence, and then is combined with the fiber yarns to complete the subsequent procedures.
Step 4, applying tension: all the fiber yarns are uniformly tensioned by a tension applying device, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of a design value.
Step 5, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 6, dehumidification: the temperature is controlled at 125 ℃, the heating time is 90s, and the moisture on the surfaces of the fiber yarns and the release cloth in the production process is removed.
Step 7, adding resin: the resin temperature was maintained at 60 ℃ and the resin was added to the product forming tank by a pump.
Step 8, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process after 6 times of extrusion.
Step 9, product molding: two groups of preforming molds are selected, the thickness is respectively 3.5mm and 3.3mm, and the thickness of the forming mold is 3.1mm.
Step 10, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 15J/cm 2 。
Step 11, thermosetting: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 12, cooling: firstly, using 35 ℃ airflow to cool, and then using 15 ℃ airflow to cool.
Step 13, drawing: the traction speed is controlled at 5m/min, and the continuous production of the product is realized.
Step 14, cutting: the product is cut once for 200m in length.
Step 15, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 16, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 17, automatic roll-down: and (5) unloading, packaging and warehousing.
Example 8
Step 1, yarn feeding: the glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 120mm, the thickness of 3mm and the number of yarn rolls of 284 rolls is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a fiber dehumidifying and heating structure, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 5, dehumidification: the temperature is controlled at 120 ℃, the heating time is 95s, and the moisture on the surface of the fiber yarn in the production process is removed.
Step 6, adding resin: the resin temperature was maintained at 55 ℃ and the resin was added by a pump into the product forming tank.
Step 7, gum dipping: and (3) impregnating the fiber yarns and the demolding cloth in a forming groove according to the designed trend, and periodically cleaning impurities in the impregnating process after 6 times of extrusion.
Step 8, product molding: two groups of preforming dies are selected, the thickness is 3.5mm and 3.3mm respectively, and the forming die thickness is 3.1mm.
Step 9, radiation curing: 365nm wave band is selected for ultraviolet light curing, and the illumination intensity is 15J/cm 2 。
Step 10, heat curing: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 11, cooling: firstly, using 35 ℃ airflow to cool, and then using 15 ℃ airflow to cool.
Step 12, drawing: the traction speed is controlled at 5m/min, and the continuous production of the product is realized.
Step 13, cutting: the product is cut once for a length of 200m.
Step 14, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 15, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 16, automatic roll-off: and (5) unloading, packaging and warehousing.
Example 9
Step 1, yarn feeding: the glass fiber (glass fiber specification: HMG 920 HT-2400) with the width of 120mm, the thickness of 3mm and the number of yarn rolls of 284 rolls is placed according to a number mark, and each fiber yarn is combined to the end of an upper yarn area according to a specific trend order, so that the fiber yarn can be distinguished from which yarn cluster each fiber yarn comes from.
Step 2, threading: orderly fiber yarns sequentially pass through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor, a cutting machine and a winding machine according to a designed channel.
Step 3, applying tension: the tension applying device uniformly applies tension to all the fiber yarns, the applied tension value is 10N, and the applied tension value is controlled within +/-3N of the design value.
Step 4, tension detection: and detecting the tension value of the fiber yarn at regular time, wherein the time interval of the regular detection is 12.5h, and the actual tension value of each fiber yarn is ensured to be in a set range in the production process.
Step 5, adding resin: the resin temperature was maintained at 65 ℃ and the resin was added by a pump into the product forming tank.
Step 6, gum dipping: and (3) finishing gum dipping of the fiber yarns in a forming tank according to the designed trend, and periodically cleaning impurities in the gum dipping process through 8 times of extrusion.
Step 7, product molding: two groups of preforming molds are selected, the thickness is respectively 3.5mm and 3.3mm, and the thickness of the forming mold is 3.1mm.
Step 8, radiation curing: selecting 365nm wave band to carry out ultraviolet light curing, wherein the illumination intensity is 15J/cm 2 。
Step 9, heat curing: and (3) selecting a contact heating mode to carry out heat conduction heating, wherein the heating temperatures are 220 ℃, 200 ℃ and 180 ℃, and the heating temperature is 180 ℃ for 120s, so that the resin is completely cured.
Step 10, cooling: the temperature is reduced by 40 ℃ airflow, and then the temperature is reduced by 20 ℃ airflow.
Step 11, drawing: the traction speed is controlled at 5m/min, and the continuous production of the product is realized.
Step 12, cutting: the product is cut once for a length of 200m.
Step 13, online detection: and detecting the width, thickness, apparent mass and straightness of the product on line.
Step 14, automatic winding: and winding and rolling are carried out according to the length of actual needs.
Step 15, automatic roll-off: and (5) unloading, packaging and warehousing.
The preparation method of the invention realizes the rapid molding of the product by a dual-curing process combining ultraviolet radiation curing and thermal curing, and makes up for the defects of slow molding speed of the thermal curing process and poor mechanical property of ultraviolet radiation curing. The ultraviolet radiation curing speed of the invention is fast, the resin can be cured within 20ms, taking a product with the thickness of 5mm as an example, the continuous production speed reaches more than 3m/min, which is more than 8 times of the production speed of the traditional process. The method perfectly combines the advantages of rapid molding of radiation curing and excellent mechanical property of thermosetting, and effectively improves the production efficiency.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The preparation method of the wind power generation blade is characterized by comprising the following steps of:
sequentially carrying out yarn feeding, yarn threading, tension applying, tension detecting, resin compounding, gum dipping, product forming, radiation curing, thermocuring, cooling, traction, cutting, online detection, winding and unwinding on fiber yarns;
the fiber yarn is a reinforced fiber, and the reinforced fiber comprises aramid fiber, nylon, glass fiber or quartz fiber;
the thermal curing mode is contact heating, radiation or convection, the thermal curing mode is gradient heating or isothermal heating, and the gradient heating mode is high temperature and low temperature; the temperature of the heat curing is 100-250 ℃, and the time of the heat curing is more than or equal to 60s;
the traction speed is 2-5 m/min.
2. The preparation method according to claim 1, wherein the threading is that the fiber yarn passes through a tension control regulator, a tension detector, a product forming groove, a forming die, a curing structure, a tractor and a cutting machine in sequence.
3. The method of claim 2, wherein threading further comprises passing the fiber yarn through a fiber dehumidifying and heating structure, a winder, after passing through a tension detector, through the fiber dehumidifying and heating structure, after passing through a cutter, through the winder;
the fiber yarn is combined with the demolding cloth after being threaded, and the demolding cloth sequentially passes through the fiber dehumidifying and heating structure, the product forming groove and the forming mold before combination.
4. The production method according to claim 2 or 3, characterized in that the applied value of the tension is 7 to 13N; the tension detection comprises online real-time detection and timing detection, and the time interval of the timing detection is 11-13 h.
5. The preparation method according to claim 4, wherein the tension detection is followed by dehumidification at 100-130 ℃ for 60s or more.
6. The preparation method according to claim 1 or 5, wherein the temperature of the resin is 40-70 ℃ before compounding with the resin, and the resin is added into a product molding groove;
the gum dipping is carried out by adopting an extrusion mode through the eyelet or the separating rod, and the number of the extrusion is 4-8.
7. The method according to claim 6, wherein the product molding comprises preforming and molding, the preformed molds are set to 1 to 3, and the molded molds are set to 1.
8. The method for preparing the optical fiber according to claim 7, wherein the radiation curing is ultraviolet curing, and the illumination intensity is 12 to 22J/cm 2 (ii) a The temperature reduction is airflow gradient temperature reduction, and the temperature of the airflow is 30-40 ℃ and 5-20 ℃ in sequence.
9. The method of claim 7 or 8, wherein the cut length is 180 to 220m; the items of online detection include apparent mass, product size, and straightness.
10. The wind power generation blade produced by the production method according to any one of claims 1 to 9, wherein the blade has a cross-sectional shape of a rectangle, a circle, or a polygon with a circular arc.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117901311A (en) * | 2024-03-20 | 2024-04-19 | 中复碳芯电缆科技有限公司 | Curing device for processing girder plates of fan blades |
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