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Method for making composite material lattice sandwich boards by prepreg fiber bundles

A composite material and prepreg technology, applied in the field of preparing composite lattice sandwich panels, can solve the problems of low mechanical properties of rods and joints, complicated operation, etc. Efficient effect

Inactive Publication Date: 2014-08-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of complex operation and low mechanical properties of rods and nodes in the preparation of carbon fiber composite lattice sandwich structures by the existing rod rolling method, the present invention further provides a method for preparing composite material points by using pre-impregnated fiber bundles. The preparation method of array sandwich panel

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  • Method for making composite material lattice sandwich boards by prepreg fiber bundles

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specific Embodiment approach 1

[0016] Specific implementation mode one: as figure 1 As shown, the steps of the method for preparing the composite lattice sandwich panel by using pre-impregnated fiber bundles in this embodiment are as follows:

[0017] Step 1, mold treatment: clean the surface of the mold with acetone solution, and then treat the outer surface of the mold with a release agent; the brand of the release agent is AC4368, and the manufacturer is Shanghai Mansi Industrial Co., Ltd.;

[0018] Step 2. Fix the mold: assemble and fix the mold with fixtures;

[0019] Step 3. Heating in the incubator: put the assembled mold into the incubator to heat, and the heating temperature is 120°C;

[0020] Step 4. Covering the carbon fiber composite material prepreg: cover the upper and lower surfaces of the mold with 1 to 20 layers of carbon fiber composite material prepreg, and keep the same number of layers of dry fiber cloth laid on the upper and lower surfaces of the mold; since the temperature of the mol...

specific Embodiment approach 2

[0028] Embodiment 2: In step 4, the upper and lower surfaces of the mold are covered with 3-18 layers of carbon fiber composite material prepreg. With such settings, fiber reinforced composite lattice sandwich panels of different thicknesses can be produced according to different needs of products. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: In step 4, both the upper and lower surfaces of the mold are covered with 5-15 layers of carbon fiber composite material prepreg. With such settings, fiber reinforced composite lattice sandwich panels of different thicknesses can be produced according to different needs of products. Others are the same as in the second embodiment.

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Abstract

A method for making composite material lattice sandwich boards by prepreg fiber bundles solves the problems of complex operation and low mechanical properties of bars and nodes in the existing bar rolling method for making carbon fiber composite material lattice sandwich structures. The method includes treating a mold; fixing the mold; heating in a heating box; covering both the upper surface and the lower surface of the mold with 1-20 layers of carbon fiber composite material prepreg; soaking a double-strand fiber rope in resin for half an hour; reeving the fiber rope soaked by resin into the prepreg attached to the surfaces of the mold by a weaving method; covering both the upper surface and the lower surface of the woven carbon fiber composite material prepreg again with 1-20 layers of carbon fiber composite material prepreg, and exhausting gas in the carbon fiber composite material prepreg; pressing a precast test piece on a pressing machine; and cooling to the room temperature, and de-molding. The method is used for making composite material lattice sandwich boards.

Description

technical field [0001] The invention relates to a method for preparing a composite lattice sandwich panel. Background technique [0002] Compared with honeycomb and foam materials, lattice materials are stretch-oriented materials with higher stiffness and strength, so they are widely used as core materials in sandwich structures. In addition, the lattice material contains a large amount of space, which can be used to bury devices such as heat pipes, microprocessors, batteries and wires, and can be made into a lightweight multifunctional structure integrating electronics, thermal control, energy and load bearing. The early lattice sandwich structures mostly used metal and alloy materials, and fiber-reinforced resin-based composite materials are undoubtedly more attractive materials. For example, carbon fiber-reinforced epoxy resin-based composite materials have almost the same stiffness and strength as alloy steel, but the density is only one-fifth of alloy steel, so they ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34
Inventor 吴林志李明马力王兵杨金水
Owner HARBIN INST OF TECH