Fiber laminated structures for reinforcements, pultruded profiles

Abstract

The fiber lay-up structure of the reinforcing material comprises a laminated fiber lay-up and a fiber wrapping layer, characterized in that the fiber wrapping layer completely wraps the outer surface of the fiber lay-up, and the thickness of the fiber wrapping layer is greater than that of the fiber lay-up the thickness of any layer. The fiber layer structure of the reinforcing material of the present invention has uniform longitudinal and transverse mechanical properties after pultrusion, and the profile is not easy to delaminate during the long-term load-bearing process, with high overall strength and good mechanical properties, which improves the mechanical properties of the profile. Use reliability and service life, improve the tensile capacity and anti-split performance of profiles, overcome the defects of insufficient longitudinal anti-split performance and insufficient interlayer bonding ability of pultruded profiles in the prior art, and meet the requirements of components or building structures on composite materials Performance requirements for pultruded profiles. The invention also provides a pultrusion profile.

Description

technical field [0001] The invention relates to a fiber lay-up structure of a reinforcing material, which is used to form a fiber skeleton and belongs to the field of composite fiber profile manufacture. The invention also relates to a pultruded profile. Background technique [0002] Pultrusion molding is to pass the glass fiber, cloth or belt impregnated with resin glue through a mold with a specified cross-section, and continuously draw out the molded products. The production automation is high and the cost is low. As the main reinforcement material of pultruded profiles, glass fiber is combined with various resins to derive many excellent properties, resulting in excellent specific strength, stiffness, weather resistance, corrosion resistance and durability of pultruded profiles. [0003] The reinforcement materials used in pultrusion are fibers, multi-axial fabrics or braided layers, and the interior and surface are designed with multi-layer reinforcement to enhance the...

AI Technical Summary

Problems solved by technology

[0008] The fiber layer structure of the reinforcing material provided by the invention has uniform longitudinal and transverse mechanical properties after pultrusion, and the profile is not easy to delaminate during the long-term load-bearing process, and the overall strength is high and the mechanical properties are good. Improve the reliability and service life of the profile, improve the tensile capacity and anti-split performance of the profile, overcome the defects of insufficient longitudinal anti-split performance and insufficient interlayer bonding ability of the pultruded profile in the prior art, and meet the requirements of components or building structures for composite materials. Performance requirements for material pultrusion profiles

Images