Vacuum-infusion manufacturing method for glass fiber reinforced plastic cabin cover for large power generation fan

Abstract

The invention discloses a vacuum-infusion manufacturing method for a glass fiber reinforced plastic cabin cover for a large power generation fan. The vacuum-infusion manufacturing method comprises thefollowing steps: spraying a mould release agent and gel coat to the surface of a mould; sequentially laying a plurality of layers of composite glass fiber cloth, mould release cloth and guide nets onthe gel coat; laying spiral tubes in a mould cavity as a resin guide tube and a vacuum-pumping tube; coating a layer of vacuum bags on the top of the mould, injecting resin into the mould through a resin injecting hole, and introducing redundant resin into a resin collector through the resin collecting hole; and after resin filling is accomplished, curing to obtain the glass fiber reinforced plastic cabin cover. According to the vacuum-infusion manufacturing method disclosed by the invention, a carbon nano tube is directly compounded on a glass fiber surface, strength of the compounded glassfiber is improved by 2.124 times, and composite glass fiber cloth only needs to lay in a laying process, so that the high-strength effect can be realized; and moreover, the infiltration effect betweenthe glass fiber cloth and resin is the same, so that the resin can be uniformly infiltrated into the strengthening material, and therefore, a product void ratio increasing phenomenon caused by uneveninfiltration is avoided.

Description

technical field [0001] The invention belongs to the field of preparation of a glass fiber reinforced plastic nacelle cover for a power generating fan, and relates to a vacuum introduction preparation method for a glass fiber reinforced plastic nacelle cover for a large power generating fan. Background technique [0002] The vacuum introduction process is to lay reinforcement material on the mold, then lay a vacuum bag, and vacuumize to form a negative pressure in the mold cavity, and then press the resin into the vacuum cavity under the action of negative pressure, and use the resin to infiltrate the reinforcement material to fill the entire cavity. Mold, remove the vacuum bag after the product is cured, and get the product from the mold. The reinforcing materials used in the existing vacuum introduction process are usually high-strength materials such as glass fibers, carbon fibers and carbon nanotubes. During the laying process, various fiber materials are laid layer by la...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a glass fiber reinforced plastic nacelle cover vacuum introduction for a large-scale power generation fan. Carbon nanotubes are directly compounded on the surface of the glass fiber, and the strength of the glass fiber after compounding is increased by 2.124 times. Only the composite glass fiber needs to be laid during the laying process. Cloth is enough, not only can achieve high-strength effect, but also the infiltration effect between glass fiber cloth and resin is the same, so that the resin can be evenly infiltrated between the reinforcing materials, and the void ratio of the product will not increase due to uneven infiltration. It solves the problem that the reinforcing materials used in the existing vacuum introduction process are usually high-strength materials such as glass fiber, carbon fiber and carbon nanotubes. During the laying process, various fiber materials are laid layer by layer, and must be compacted to prevent porosity of the prepared product Larger, but in the process of laying different types of reinforcement materials, the infiltration capacity of the resin is different, resulting in uneven infiltration at the junction of the two reinforcement fibers and voids, which in turn causes the problem of large porosity in the prepared product

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