Honeycomb core based on carbon fibre paper and preparation method for same

A technology of carbon fiber paper and honeycomb core, which is applied in the direction of cardboard items, etc., can solve the problems of bonded surface damage, large difference in thermal expansion coefficient, and easy corrosion of aluminum honeycomb

Inactive Publication Date: 2014-04-23
ARAMICORE COMPOSITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes how carbon-fiber papers can be useful for making materials like filters or sound insulation due to their unique combination of technical features: good electronic conduction, thermal property, wavelengths absorbance, low density, strong structure, easy manufacturing process, durability over time, etc., while still being lighter than traditional metal ones.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to create strong but flexible structures called carbons or fibrous fabrics through combining different types of organic polymer composites such as phenol formaldehyde impregnated cellulosite felt sheets. These structural components provide superior insulation against fire hazards while being durable and easy to process at lower costs without causing environmental concerns like harmful waste products. Additionally, these carriages allow for better integration within various applications where they require electric conduction, including transportation systems, defense industry, space exploration, medical equipment, and industrial machining processes.

Method used

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  • Honeycomb core based on carbon fibre paper and preparation method for same
  • Honeycomb core based on carbon fibre paper and preparation method for same
  • Honeycomb core based on carbon fibre paper and preparation method for same

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1 Honeycomb core based on carbon fiber paper and its preparation

[0024] The prepared carbon fiber paper-based honeycomb cell has a side length of 3.67mm and a density of 64kg / m 3 , the preparation method specifically includes the following steps:

[0025] (1) Use carbon fiber paper with a thickness of 0.08mm (made of 80% carbon fiber and 20% plant fiber by weight) as the raw material paper to apply glue with a glue roller dipped in core strip glue, and then apply multi-layer (The number of layers is determined according to the size of the honeycomb block.) The glued raw paper is stacked in staggered layers, and finally hot-pressed by a hot press to make a honeycomb block. The core strip adhesive is a modified epoxy adhesive with a viscosity of 35s / 50mL. When hot pressing, first preheat at 80°C for 45 minutes, then gel at 120°C for 120 minutes, and finally cure at 180°C for 3.5 hours, and the hot pressing pressure is 6MPa.

[0026] (2) After stretching the h...

Embodiment 2

[0030] Example 2 Honeycomb core based on carbon fiber paper and its preparation

[0031] The obtained carbon fiber paper-based honeycomb cell has a cell size of 1.83mm and a density of 48kg / m 3 , the difference between the preparation method and Example 1 is:

[0032] The thickness of carbon fiber paper is 0.05mm (made of 70% carbon fiber, 15% plant fiber and 15% synthetic fiber by weight). The viscosity of the modified epoxy core strip glue used in step (1) is 25s / 50mL. Step (2) Stretch the honeycomb stack with a stretching machine at a stretching speed of 5mm / min. The number of dipping times in step (3) is three times. The composition of the dipping solution is: a phenolic resin solution with a mass percentage of 10%, and a solvent of industrial alcohol (the mass percentage of ethanol in the industrial alcohol is 99%). When curing, preheat at 85°C for 45 minutes, then gel at 125°C for 120 minutes, and finally cure at 180°C for 3 hours.

[0033] The lattice hole side len...

Embodiment 3

[0034] Example 3 Honeycomb core based on carbon fiber paper and its preparation

[0035] The prepared carbon fiber paper-based honeycomb cell has a cell size of 2.75mm and a density of 32kg / m 3 , the difference between the preparation method and Example 1 is:

[0036] The thickness of carbon fiber paper is 0.04mm (made of 75% carbon fiber and 25% synthetic fiber by weight). The viscosity of the modified epoxy core strip glue used in step (1) is 30s / 50mL. Step (2) Stretch the honeycomb stack with a stretching machine at a stretching speed of 25mm / min. The dipping frequency in step (3) is twice. The composition of the dipping solution is: a polyimide resin solution with a mass percentage of 20%, and the solvent is industrial acetone (the mass percentage of acetone in the industrial acetone is 98%). When curing, preheat at 100°C for 50 minutes, then gel at 160°C for 100 minutes, and finally cure at 220°C for 4 hours.

[0037]The lattice hole side length prepared in embodimen...

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Abstract

The invention provides a novel honeycomb core based on carbon fibre paper and a preparation method for the same. The preparation method comprises the steps of gluing, laminating and hot-pressing the carbon fibre paper to prepare a honeycomb laminated block, then stretching the honeycomb laminated block and then impregnating for 1-8 times, drying and then curing during the last time of impregnating, and slicing the impregnated and cured honeycomb. The base material used is the carbon fibre paper, thus the novel honeycomb core provided by the invention is excellent in physical and chemical properties such as electrical conductivity, electric heating property and wave absorbing property, and moreover, fibres in the carbon fibre paper are randomly arranged in the form of short fibres, and isotropic in property; therefore, the carbon fibre paper is superior in the industrial fields with high property uniformity requirements. The honeycomb made of the paper is low in cost, is greatly improved in electrical conductivity, electric heating property and wave absorbing property compared with an aramid fibre honeycomb, and has the excellent mechanical properties of light weight and high strength of honeycomb structures.

Description

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Claims

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Application Information

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Owner ARAMICORE COMPOSITE
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