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CN-119613858-B - High-performance composite board prepared by utilizing waste wind power blades and preparation method thereof

CN119613858BCN 119613858 BCN119613858 BCN 119613858BCN-119613858-B

Abstract

The high-performance composite board prepared by utilizing the waste wind power blades contains a large amount of waste wind power blade powder and waste wind power blade degradation glass fibers, so that the manufacturing cost of the high-performance composite board can be reduced, powder prepared by the waste wind power blades and regenerated glass fibers obtained by a chemical degradation method can be recycled, the recycling of the retired wind power blades is realized, and the recycling problem of the retired wind power blades is effectively solved. In addition, the coupling effect of the waste wind power blade powder and the waste wind power blade degradation glass fiber and the thermoplastic resin is good, and the effect of mixing and stirring can be improved under the synergistic effect of materials such as compatilizer, wood powder, filler and lubricant, so that the waste wind power blade powder and the waste wind power blade degradation glass fiber are uniformly dispersed in the high-performance composite board, and the physical properties of stretch resistance, bending resistance and compression resistance of the composite board can be improved.

Inventors

  • LI YANFENG
  • LIU XIN
  • LI GANG
  • ZHU MENGZHE
  • ZHOU FENGXIANG
  • HE FAQUAN
  • WANG HONGLIANG

Assignees

  • 辽宁龙源新能源发展有限公司

Dates

Publication Date
20260512
Application Date
20241115

Claims (8)

  1. 1. The high-performance composite board prepared by utilizing the waste wind power blade is characterized in that the material for preparing the high-performance composite board comprises waste wind power blade material, silane coupling agent diluent, thermoplastic resin, compatilizer, wood powder, filler, lubricant, release agent and pigment; the method for preparing the high-performance composite board comprises the following steps: s1, enabling a waste wind power blade material and silane coupling agent diluent to enter a high-speed mixer for premixing treatment, wherein the waste wind power blade material comprises waste wind power blade powder and waste wind power blade degradation glass fibers; s2, enabling thermoplastic resin, compatilizer, wood powder, filler, lubricant, release agent and pigment to enter the high-speed mixer to be mixed and stirred with the mixed material in the step S1, so as to obtain a composite board mixed material; S3, enabling the composite board material mixture to enter a granulator for granulation treatment to obtain composite resin particles; S4, enabling the composite resin particles to enter a conical double-screw extruder for extrusion molding to obtain a high-performance composite board; the thermoplastic resin comprises, by weight, relative to 160 parts of thermoplastic resin, 50-200 parts of waste wind power blade powder, 5-40 parts of waste wind power blade degradation glass fiber, 5-50 parts of silane coupling agent diluent, 5-80 parts of compatilizer, 50-200 parts of wood powder, 5-50 parts of filler, 5-35 parts of lubricant, 5-35 parts of release agent and 1-10 parts of pigment; The mass concentration of the silane coupling agent in the silane coupling agent diluent is 30-60%; The granularity of the waste wind power blade powder is 40-200 meshes; The length of the degraded glass fiber of the waste wind power blade is 0.5-3cm.
  2. 2. The high performance composite board according to claim 1, wherein said silane coupling agent comprises KH550 and/or KH560.
  3. 3. The high-performance composite board according to claim 1, wherein the content of the waste wind power blade powder is 100 to 180 parts by weight, the content of the waste wind power blade degraded glass fiber is 10 to 30 parts by weight, the content of the silane coupling agent diluent is 10 to 45 parts by weight, the content of the compatibilizer is 10 to 70 parts by weight, the content of the wood flour is 100 to 180 parts by weight, the content of the filler is 10 to 40 parts by weight, the content of the lubricant is 10 to 30 parts by weight, the content of the mold release agent is 10 to 30 parts by weight, and the content of the pigment is 2 to 8 parts by weight, relative to 160 parts by weight of the thermoplastic resin.
  4. 4. The high performance composite board according to claim 1, wherein said thermoplastic resin comprises polypropylene and/or polyethylene; the wood powder comprises poplar powder and/or eucalyptus powder, wherein the granularity of the wood powder is 50-150 meshes; the compatilizer comprises maleic anhydride grafted polypropylene and/or maleic anhydride grafted polyethylene; The filler comprises calcium carbonate and/or talc; The lubricant comprises polyethylene wax; the release agent comprises one or more of sodium stearate, magnesium stearate and calcium stearate; the pigment comprises iron oxide red and/or iron oxide yellow.
  5. 5. A method of making the high performance composite board of any one of claims 1-4, comprising: s1, enabling a waste wind power blade material and silane coupling agent diluent to enter a high-speed mixer for premixing treatment, wherein the waste wind power blade material comprises waste wind power blade powder and waste wind power blade degradation glass fibers; s2, enabling thermoplastic resin, compatilizer, wood powder, filler, lubricant, release agent and pigment to enter the high-speed mixer to be mixed and stirred with the mixed material in the step S1, so as to obtain a composite board mixed material; S3, enabling the composite board material mixture to enter a granulator for granulation treatment to obtain composite resin particles; And S4, enabling the composite resin particles to enter a conical double-screw extruder for extrusion molding, and obtaining the high-performance composite board.
  6. 6. The method according to claim 5, wherein step S1 comprises: s11, sequentially cutting, crushing and screening the waste wind power blades to obtain waste wind power blade powder with the granularity of 40-200 meshes; S12, sequentially cutting, chemically degrading, washing, drying and cutting the waste wind power blade to obtain the waste wind power blade degraded glass fiber with the length of 0.5-3 cm; S13, enabling the waste wind power blade powder and the waste wind power blade degradation glass fiber to enter the high-speed mixer for mixing, and spraying the silane coupling agent diluent in the mixing process; s14, continuously stirring the high-speed mixer for 10-30min under the condition that the rotating speed is 550-650 r/min; and S15, cooling the mixed material obtained in the step S14 to 20-30 ℃.
  7. 7. The method according to claim 5, wherein the granulating process in step S3 further comprises the conditions that the temperature of the blanking section in the granulator is 160-210 ℃, the temperature of the plasticizing section in the granulator is 150-190 ℃, and the temperature of the extruding section in the granulator is 140-180 ℃.
  8. 8. The method of claim 5, wherein the extrusion molding conditions in step S4 further comprise a temperature of 170-220 ℃ in a discharging section of the conical twin-screw extruder, a temperature of 150-200 ℃ in a plasticizing section of the conical twin-screw extruder, and a temperature of 140-180 ℃ in an extruding section of the conical twin-screw extruder.

Description

High-performance composite board prepared by utilizing waste wind power blades and preparation method thereof Technical Field The disclosure relates to the technical field of solid waste treatment, in particular to a high-performance composite board prepared by utilizing waste wind power blades and a preparation method thereof. Background The wind power blade is one of core components of a wind power generator set, and the wind power blade in service is mostly manufactured by adopting a fiber reinforced thermosetting resin matrix composite material, and the material has the advantages of high specific strength, high fatigue resistance, good corrosion resistance and weather resistance and the like, and the service life of the wind power blade is generally 20-25 years. The wind power blade has extremely stable chemical property, can be non-corrosive for decades or even hundreds of years, and can generate a large number of retired wind power blades as the wind power generator set installed in the early stage is retired successively. At present, a considerable number of scientific research institutions and enterprises have conducted related researches on the aspect of resource utilization of retired wind power blades, the main treatment methods in the market are a physical treatment method and a chemical degradation method, wherein the physical treatment method is used for cutting and crushing waste wind power blades and then using the waste wind power blades as a filler to manufacture some wood-plastic-like regenerated plates, but the performance of the waste wind power blades is only flush or slightly weaker than that of the traditional wood-plastic materials, the market competitiveness is poor, the cost of the chemical degradation method is relatively high, the regenerated glass fibers cannot be used for manufacturing the blades again, and the downstream of the regenerated glass fibers is still to be developed. Disclosure of Invention The invention aims to provide a high-performance composite board prepared by using waste wind power blades and a preparation method thereof, so as to solve the problems that glass fibers obtained by degradation cannot be reused and the market competitiveness of boards prepared by using waste wind power blade powder is poor in the prior art. In order to achieve the above object, a first aspect of the present disclosure provides a high-performance composite board prepared by using waste wind power blades, wherein the material for preparing the high-performance composite board comprises waste wind power blade material, silane coupling agent, thermoplastic resin, compatilizer, wood powder, filler, lubricant, release agent and pigment, wherein the waste wind power blade material comprises waste wind power blade powder and waste wind power blade degradation glass fiber; the thermoplastic resin comprises, by weight, 160 parts of thermoplastic resin, 50-200 parts of waste wind power blade powder, 5-40 parts of waste wind power blade degradation glass fiber, 5-50 parts of silane coupling agent, 5-80 parts of compatilizer, 50-200 parts of wood powder, 5-50 parts of filler, 5-35 parts of lubricant, 5-35 parts of release agent and 1-10 parts of pigment. Optionally, the silane coupling agent includes KH550 and/or KH560. Optionally, the granularity of the waste wind power blade powder is 40-200 meshes, and the length of the waste wind power blade degradation glass fiber is 0.5-3cm. Alternatively, the content of the waste wind power blade powder is 100-180 parts by weight, the content of the waste wind power blade degraded glass fiber is 10-30 parts by weight, the content of the silane coupling agent is 10-45 parts by weight, the content of the compatilizer is 10-70 parts by weight, the content of the wood powder is 100-180 parts by weight, the content of the filler is 10-40 parts by weight, the content of the lubricant is 10-30 parts by weight, the content of the release agent is 10-30 parts by weight, and the content of the pigment is 2-8 parts by weight, relative to 160 parts by weight of the thermoplastic resin. Optionally, the thermoplastic resin comprises polypropylene and/or polyethylene, the wood powder comprises poplar powder and/or eucalyptus powder, the particle size of the wood powder is 50-150 meshes, the compatilizer comprises maleic anhydride grafted polypropylene and/or maleic anhydride grafted polyethylene, the filler comprises calcium carbonate and/or talcum powder, the lubricant comprises polyethylene wax, the release agent comprises one or more of sodium stearate, magnesium stearate and calcium stearate, and the pigment comprises iron oxide red and/or iron oxide yellow. A second aspect of the present disclosure provides a method of preparing the high performance composite board of the first aspect, the method comprising: s1, enabling a waste wind power blade material and silane coupling agent diluent to enter a high-speed mixer for premixing treatment, wherein the waste wi