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CN-121975231-A - Reinforced agricultural composite material based on wind power blade recycled fibers and preparation method thereof

CN121975231ACN 121975231 ACN121975231 ACN 121975231ACN-121975231-A

Abstract

The application discloses a reinforced agricultural composite material based on wind power blade recycled fibers and a preparation method thereof, wherein the mass percentage of each component for preparation is that the recycled modified fibers are 20% -50%, the thermoplastic resin base material is 45% -75%, the toughening agent is 1% -5%, and the antioxidant is 0.5% -2%, wherein the recycled modified fibers are obtained by cutting and crushing retired wind power blades, and then screening chopped recycled fibers with the length of 1-10mm from the chopped recycled fibers, and carrying out surface modification treatment. The composite material prepared by the scheme has the characteristics of high strength, corrosion resistance and light weight, can be widely applied to the fields of agricultural films, irrigation pipelines, seedling containers, agricultural supports and the like, and fills up the agricultural blank of recovering fibers from wind power blades.

Inventors

  • LI XING
  • YANG BAO

Assignees

  • 陕西奋均环保科技有限公司

Dates

Publication Date
20260505
Application Date
20260313

Claims (10)

  1. 1. The reinforced agricultural composite material based on the wind power blade recycled fiber is characterized by comprising the following components in percentage by mass: 20% -50% of recycled modified fibers; 45% -75% of thermoplastic resin base material; 1% -5% of toughening agent; 0.5 to 2 percent of antioxidant; Wherein the recovery modified fiber is obtained by cutting and crushing retired wind power blades, screening chopped recovery fibers with the length of 1-10mm from the cut recovery fibers, and carrying out surface modification treatment.
  2. 2. The wind turbine blade recycled fiber-based reinforced agricultural composite of claim 1, wherein the thermoplastic resin substrate is at least one of polypropylene (PP) or Polyethylene (PE).
  3. 3. The wind blade recovery fiber-based reinforced agricultural composite of claim 1, wherein the toughening agent is an ethylene-octene copolymer (POE) or a styrene-butadiene-styrene block copolymer (SBS).
  4. 4. The reinforced agricultural composite material based on the recycled fiber of the wind power blade according to claim 1, wherein the antioxidant is a mixture of antioxidant 1010 and antioxidant 168 according to a mass ratio of 1:1, or antioxidant 1076, or antioxidant 1010.
  5. 5. The reinforced agricultural composite material based on the wind power blade recycled fiber, which is disclosed in any one of claims 1-4, is characterized in that the surface modification treatment adopts silane coupling agent treatment or plasma treatment, wherein the dosage of the silane coupling agent is 1% -3% of the mass of the chopped recycled fiber, and the plasma treatment condition is argon atmosphere, the pressure is 0.1MPa, the power is 80-120W, and the treatment time is 1-3min.
  6. 6. The reinforced agricultural composite based on wind power blade recovery fiber according to claim 5, wherein when the surface modification treatment adopts a silane coupling agent, the chopped recovery fiber is dispersed in deionized water, the silane coupling agent is added, ultrasonic treatment is carried out for 20-40min at 50-70 ℃, and the filter is carried out and then the filter is dried to constant weight at 70-90 ℃.
  7. 7. A method for preparing the reinforced agricultural composite based on wind turbine blade recycled fiber as claimed in any one of claims 1 to 6, comprising: The method comprises the steps of weighing recycled modified fibers, thermoplastic resin base materials, toughening agents and antioxidants according to the mass percentage of claim 1, wherein the recycled modified fibers are obtained by cutting and crushing retired wind power blades, and then screening chopped recycled fibers with the length of 1-10mm from the chopped recycled fibers, and performing surface modification treatment; Uniformly mixing the recycled modified fiber, the thermoplastic resin base material, the toughening agent and the antioxidant to obtain a mixture; And (3) putting the mixture into a double-screw extruder, carrying out melt blending at 150-220 ℃, and extruding and granulating to obtain the reinforced agricultural composite material.
  8. 8. The method for preparing the reinforced agricultural composite material based on the wind power blade recycled fiber, which is disclosed in claim 7, is characterized in that when the mixture is put into a double-screw extruder for melt blending, the screw rotation speed of the double-screw extruder is controlled to be 150-250r/min, the extrusion temperature is set in a segmented mode, wherein the feeding section is 150-170 ℃, the compression section is 170-190 ℃, the melting section is 190-220 ℃ and the homogenization section is 180-200 ℃.
  9. 9. Use of the reinforced agricultural composite based on wind power blade recovery fibers according to any one of claims 1 to 6 for the preparation of agricultural products comprising agricultural films, irrigation pipes, seedling containers, agricultural supports.
  10. 10. Use of a reinforced agricultural composite based on wind blade recovery fibers according to claim 9, characterized in that the preparation of an agricultural product comprises: the reinforced agricultural composite material based on the wind power blade recycled fiber is subjected to compression molding or injection molding to obtain the agricultural product; Wherein the compression molding conditions are that the temperature is 170-190 ℃, the pressure is 8-12MPa, and the pressure is maintained for 3-8min; the temperature of the injection molding is 190-210 ℃.

Description

Reinforced agricultural composite material based on wind power blade recycled fibers and preparation method thereof Technical Field The application relates to the technical field of agricultural composite materials, in particular to an enhanced agricultural composite material based on wind power blade recycled fibers and a preparation method thereof. Background Along with the rapid increase of the installed capacity of the global wind power, the large-scale treatment of retired wind power blades faces the urgent problems of environmental protection and resource recycling. The traditional blade is mainly made of glass fiber or carbon fiber reinforced resin matrix composite materials, has stable chemical property and firm physical structure, and is difficult to degrade naturally after being abandoned. The main treatment methods at present comprise landfill and incineration, the former occupies a large amount of land resources and has potential environmental pollution risks, and the latter can release toxic gases and cause resource waste. Although some technologies have attempted to crush the blades for co-disposal in cement kilns or as a filler for building materials, these applications are often low in added value and do not fully realize high-value recycling of fiber-reinforced materials. On the other hand, plastic products widely used in agricultural production, such as mulching films, irrigation pipes and seedling containers, are subjected to severe sustainable use pressures. The traditional petroleum-based plastic has the problems of nondegradable, easy aging and fracture, difficult recovery and the like, and can cause soil plastic pollution after long-term use. In addition, the common plastic products have limited mechanical properties, and the service life of the common plastic products is easily shortened due to mechanical damage in a complex agricultural environment. In recent years, although some bio-based or degradable agricultural materials are appeared, the cost is often higher, and the mechanical strength and durability are still different from those of the traditional plastics, so that the dual requirements of modern agriculture on the material performance and the cost are difficult to fully meet. In the prior art, various natural or recycled fibers are used for reinforcing polymer composite materials, but special and high-value agricultural use for wind power blade recycled fibers still has obvious blank. The fiber in the wind power blade is processed by a special process, has the characteristics of complete length, excellent orientation, high strength retention rate and the like, and is an ideal candidate reinforcing material. However, how to effectively combine the composite material with an agriculturally suitable matrix material, a composite material with good mechanical properties, environmental tolerance, cost effectiveness and potential environmental friendly characteristics is developed, and no mature technical scheme is seen yet. In particular, there is a lack of systematic research in the design of customized materials that are suitable for different agricultural scenarios (e.g., films that require flexibility, pipes that require pressure resistance, seedling containers that require some rigidity and degradation coordination). Disclosure of Invention The embodiment of the application provides an enhanced agricultural composite material based on wind power blade recycled fibers and a preparation method thereof. In a first aspect, embodiments of the present application provide a reinforced agricultural composite based on wind blade recycled fibers, comprising the following components in mass percent: 20% -50% of recycled modified fibers; 45% -75% of thermoplastic resin base material; 1% -5% of toughening agent; 0.5 to 2 percent of antioxidant; Wherein the recycled and modified fiber is obtained by cutting and crushing retired wind power blades, screening chopped recycled fiber with the length of 1-10mm from the chopped recycled fiber, and performing surface modification treatment. In one embodiment, the thermoplastic resin substrate is at least one of polypropylene (PP) or Polyethylene (PE). In one embodiment, the toughening agent is an ethylene-octene copolymer (POE) or a styrene-butadiene-styrene block copolymer (SBS). In one embodiment, the antioxidant is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1, or antioxidant 1076, or antioxidant 1010. In one embodiment, the surface modification treatment adopts silane coupling agent treatment or plasma treatment, wherein the dosage of the silane coupling agent is 1-3% of the mass of the chopped and recovered fiber, and the plasma treatment condition is argon atmosphere with the pressure of 0.1MPa, the power of 80-120W and the treatment time of 1-3min. In one embodiment, when the surface modification treatment is performed by using a silane coupling agent, the chopped recycled fibers are dispersed in deionized water