Method for producing multiaxial mixed braided fabric

Abstract

The invention discloses a method for producing multiaxial mixed braided fabric. The method includes the steps that first, zero-degree warps of the first layer are prepared; second, zero-degree warps of the second layer to zero-degree warps of the N layer are prepared, wherein N is a natural number and is larger than or equal to two; third, wefts of the (N+1) layer to wefts of the (N+N) layer are prepared, wherein the angle between any layer of the wefts and a workbench of a warp knitting machine ranges from -90 degrees to +90 degrees, and the wefts at the same angle have one or more layers and are made of the same material or different materials; fourth, bundling lines are prepared; fifth, the materials prepared from the first step to the fourth step are laid down and mixed, so that the multiaxial mixed braided fabric is obtained; sixth, cutting and winding are carried out. By the adoption of the method, uniform distribution and thickness consistency of fibers in all areas of the mixed braided fabric can be guaranteed, composite material performance and cost designability can be achieved, and production cost is lowered.

Description

technical field [0001] The invention relates to a production method of a multiaxial mixed braided fabric. Background technique [0002] As an inexhaustible and renewable resource, wind energy has attracted the attention of countries all over the world. The price of wind power is inversely proportional to the power of the wind turbine. The greater the power of the wind turbine, the lower the unit power generation cost. The output power P of the fan is proportional to the square of the diameter D of the wind rotor, that is, P=0.3×D 2 . As the diameter of the wind rotor increases, the output power of the fan will increase exponentially. With the development and maturation of modern wind power technology, the research on wind turbines is developing in the direction of increasing the unit capacity, reducing the mass per kilowatt, and improving the conversion efficiency. In order to ensure that the blade tip does not touch the tower (tower clearance standard) under extreme win...

AI Technical Summary

Problems solved by technology

[0006] The existing common multi-axial mixed warp knitted fabrics are all mixed in a single layer. In the high-performance fiber composite material industry, the uniform distribution of fibers and resins is one of the key factors affecting the performance of composite materials. Because warp knitted fabrics Due to the limitation of warp density, raw material specifications and the characteristics of different densities of different materials, if the same thickness of different fiber materials in the single-layer mixed warp knitted fabric is to be obtained, the designability of the mixed warp knitted fabric will be greatly limited. , so the product will be difficult to produce industrially at low cost