Production method for three-dimensional reinforced warp knitted spaced fabric

Abstract

The invention relates to a manufacture method for three-dimensional reinforced warp knitted spaced fabric, and the warp knitted spaced fabric is produced on a modified double tricot raschel machine with full weft insertion devices. A main body of adopted raw materials is tows of high-performance fiber such as fiber glass, carbon fiber, aramid fiber, ultra high modulus polyethylene and the like. The manufacture method comprises the following steps: introducing high-performance fiber inserted weft yarns on the whole width of the machine in the X-axis direction through two weft insertion devices arranged on the front and the back of the machine; introducing high-performance fiber inserted warp yarns in the Y direction through guide bars; binding and fixing the inserted warp yarns and the inserted weft yarns through chain stitch or tricot stitch of common or high strength synthetic fiber filament yarns; adopting the high-performance fiber on upper and lower surface layer connecting yarns, ensuring the distance of 5 to 6 cm between the two surface layers, and providing reinforcing fiber in the Z-axis direction; and designing raw materials, densities, arrangement modes and interlayer thickness of the inserted warp and weft yarns of the surface layers and interlayer connecting yarns according to the requirements to form three-dimensional mesh structures with different mesh sizes and specifications. The manufacture method is characterized in that the high-performance fiber is extended and arranged in three-dimensional directions so as to overcome the defects and disadvantages of the prior spaced fabric taken as a reinforced material, and the manufacture method provides an ideal three-dimensional reinforced fabric for production of composite boards with good tensile, bending, shearing and compression properties and shock resistance.

Description

technical field [0001] The patent of the present invention relates to a production method of a three-dimensional warp-knitted spacer knitted fabric (also known as a warp-knitted sandwich). In particular, it discloses a biaxial fabric whose surface layer is high-performance fiber tow as the warp-lining and weft-lining, and the interlayer is a three-dimensional reinforced warp-knitted spacer knitted fabric composed of high-strength fiber tow layers connecting the two surface layers. It belongs to the field of knitting. Background technique [0002] Spacer fabric refers to a three-dimensional textile composed of two fabric surface layers and a yarn connecting layer formed by textile technologies such as weaving, weft knitting, and warp knitting. As a three-dimensional structural textile reinforcement material combined with resin and other matrix materials, the spacer fabric can form a non-layered hollow sandwich composite plate with high strength, light weight, high specific m...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the patent of the present invention is to solve the defects and deficiencies existing in existing spacer fabrics as reinforcing materials, and introduce high-performance yarns arranged straight in three-dimensional directions into the warp-knitted spacer structure to provide a three-dimensional reinforced warp fabric with excellent mechanical properties. knitting spacer knitted fabric

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