Semi-prepreg for wind power generator vane and production process thereof

Abstract

The invention relates to a polymer material field, in particular to a semi prepreg for blades of a wind mill generator and a process for manufacturing the same. Unidirectional reinforcing fibers are arranged between an upper layer of flake-shaped reinforcing fibers and a lower layer of flake-shaped reinforcing fibers, and matrix resins are arranged between an upper layer of flake-shaped transverse unidirectional cloth and a lower layer of flake-shaped transverse unidirectional cloth, and partial resins are immersed in inner side surfaces of the upper layer of flake-shaped transverse unidirectional cloth and the lower layer of flake-shaped transverse unidirectional cloth, and the penetration rate of the matrix resins is more than and equal to 10 percent and less than and equal to 80 percent; transverse fibers of the upper layer of flake-shaped transverse unidirectional cloth and the lower layer of flake-shaped transverse unidirectional cloth form a certain symmetrical angle. By taking the release paper as a carrier, the matrix resins are coated to form a resin film with a certain quality, and the resin film on the release paper is stuck between the upper layer of flake-shaped reinforcing fibers and the lower layer of flake-shaped reinforcing fibers, and simultaneously zero-degree unidirectional reinforcing fibers are arranged between the upper layer of flake-shaped reinforcing fibers and the lower layer of flake-shaped reinforcing fibers and pressurized at a temperature of 80 DEG C below zero, which makes partial resins and flake-shaped reinforcing fibers immersed.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a semi-prepreg impregnated with reinforced fiber and sheet-like reinforced fiber weft unidirectional cloth and thermosetting resin and its production process, especially to the material used for the production of wind power generation blades . Background technique [0002] Wind power blades are one of the core components of wind turbines. To be able to produce high-quality blades requires the guarantee of superior performance and suitable raw materials. Fiber-reinforced plastic composites (FRP for short) are the preferred materials for the production of wind power blades because of their high specific strength and large specific modulus. Usually, the most common material used for the production of blades is to use unsaturated polyester resin or epoxy resin of room temperature curing system as the matrix resin and combine with glass fiber to cure. The use of unsaturated polyeste...

AI Technical Summary

Problems solved by technology

The use of unsaturated polyester resin has volatile substances such as styrene in the production process, which will have adverse effects on the environment and operators

Similarly, the use of epoxy resin room temperature curing system as the base material also has the disadvantages of unstable resin content of the product, curing system is harmful to the human body, and poor operating environment.

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