Polyurethane resin perfusion structure and molding method of wind power generation blade

A wind power generation blade and polyurethane resin technology, which is applied in the field of polyurethane resin infusion structure and molding of wind power generation blades, can solve problems such as rich glue and poor infiltration, and achieve the effects of avoiding poor infiltration, reducing risks, and improving poor infusion

Active Publication Date: 2022-01-25
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology, and provide a polyurethane resin perfusion structure and molding method for wind power generation blades, so as to solve the defects of rich glue and poor infiltration

Method used

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  • Polyurethane resin perfusion structure and molding method of wind power generation blade
  • Polyurethane resin perfusion structure and molding method of wind power generation blade
  • Polyurethane resin perfusion structure and molding method of wind power generation blade

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Embodiment Construction

[0029] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

[0030] Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. The terminology used herein is only for the purpose of describing specific embodiments, and is not intended to limit the protection scope of the present invention.

[0031] like Figure 1~3 , in one embodiment of the present invention, lay diversion net as bottom diversion medium (not shown in the figure) at the bottom of mold 1, diversion net string to the left end distance suction side (vacuum pipeline 10 side, such as image 3 ) The façade of the mold is 80±10mm, and the chord extends to the right side to the flange, so th...

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Abstract

The invention discloses a polyurethane resin perfusion structure and molding method for a wind power generation blade. The diversion medium is set at the bottom of the mold, the reinforcing material is laid on the bottom diversion medium, the upper surface diversion medium is set on the upper surface of the reinforcement material on the chord direction glue injection side and partially overlaps with the upper surface of the reinforcement material, and the ohmic tube along the stretch It is arranged at the edge of the upper surface of the diversion medium, and the two ends of the ohmic tube are sleeved with a spiral tube with a diameter smaller than that of the ohmic tube. The injection port of the glue injection pipeline is located in the middle of the mold in the span direction and docked with the ohmic tube. The invention improves the overall pouring speed, avoids the prolongation of pouring time caused by unreasonable flow channel design in a small number of positions, thereby improving production efficiency, improving the poor pouring that is prone to occur in the manufacturing process of polyurethane composite products, and reducing molding. risks in the process.

Description

technical field [0001] The invention belongs to the field of composite material molding, and in particular relates to a polyurethane resin perfusion structure and molding method of a wind power generation blade. Background technique [0002] At present, wind power blades usually use two-component epoxy infusion system resin in the production process. That is to say, the system is under certain negative pressure conditions, and the resin is injected into the reinforcing material from the outside, and then solidified and formed. In order to optimize the blade quality and shorten the production cycle, a thermosetting polyurethane resin composed of polyol (Baidol 78BD085) and isocyanate (Desmodol 44CP20) is specially developed. The mechanical properties, interlaminar shear properties and fatigue resistance of the laminates all meet Wind rotor blades of a wind turbine. Using the polyurethane resin system and reinforcing materials to prepare wind power blade composite materials ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29C70/54B29L31/08
CPCB29C70/443B29C70/54B29L2031/085Y02P70/50
Inventor 梁自禄刘云路崔志刚喻雄杨军彭超义冯学斌
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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