Preparation method of multi-component low-density glass bead prepreg cloth

Abstract

The invention discloses a preparation method of multi-component low-density glass bead prepreg cloth, wherein the preparation method comprises the steps: carrying out spatial staggered arrangement on2-5 different specifications of glass beads in resin to press an adhesive film, and pressing the adhesive film on which the glass beads are arranged in a staggered manner into fiber cloth to obtain the multi-component low-density glass bead prepreg cloth. According to the preparation method of the multi-component low-density glass bead prepreg cloth, the density of the prepared glass bead prepregcloth is low; the ablation capability of the material is ensured, and meanwhile, the mechanical strength and the heat insulation effect are good.

Description

technical field [0001] The invention belongs to the technical field of composite heat insulation materials, and in particular relates to a preparation method of a multi-component low-density glass bead prepreg cloth. Background technique [0002] With the development of aerospace vehicles, the demand for heat insulation and heat-proof materials is also increasing, and higher requirements are put forward for the heat insulation performance of heat insulation and heat-proof materials. For example, the flight speed of an aerospace vehicle maneuvers within the range of 5 Ma to 10 Ma, and the outer surface temperature of the aerospace vehicle reaches a maximum of 1000 to 1300 °C during flight. In order to ensure the long-term safe and normal flight of aerospace vehicles, the materials used in aerospace vehicles should have good ablation resistance and good heat insulation performance, as well as high mechanical properties and low density. Ensure that equipment failure and damage...

AI Technical Summary

Problems solved by technology

[0003] As a kind of heat insulation material, glass fiber reinforced plastic material is wound and cured by glass cloth / phenolic prepreg cloth. After molding, the material has the characteristics of high strength and ablation resistance, so it is mostly used as heat-resistant material. With the development needs of aircraft, Only heat protection can no longer meet the existing requirements, and it should also have high mechanical properties and low material density; the existing disclosed FRP material has a high density, and has the defect of poor mechanical properties; There is a demand for high-efficiency heat-insulating FRP materials with excellent thermal properties and certain mechanical properties

[0004] The existing disclosed low-density glass fiber microsphere prepregs are prepared into low-density prepregs by organically combining three matrix materials of glass microspheres, fibers and resins in a reasonable proportion, but usually the realization process adopts the same method. Specification glass microspheres, if you want to continue to reduce its density, you need to use lower density glass microspheres, but the lower the density of glass microspheres, the larger the particle size and specific surface area, and the larger the occupied space, you need to sacrifice fibers to increase resin , to ensure the adhesion of the material, but this method will reduce the mechanical properties of the material, so that the rigid support and ablation of the material cannot be realized

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