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Carbon fiber base fabric composite material and preparation method and application thereof

A carbon fiber cloth and composite material technology, which is applied to carbon fiber cloth-based composite materials and their preparation and application fields, can solve problems such as affecting CCL production operations, carbon fiber cloth base weft skew or warp and weft dispersal, fiber breakage, etc., and achieves thermal conductivity. And the effect of enhancing the system is good, the probability of white spots and white spots is reduced

Active Publication Date: 2013-06-05
GUANGDONG SHENGYI SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing carbon fiber cloth is woven, the weave is relatively loose, and the warp and weft are not closely connected. For example, using the traditional bonding sheet processing method, the carbon fiber cloth is impregnated in the insulating adhesive system, and used in dipping and gluing. During the process, it is easy for the base weft of the carbon fiber cloth to be skewed or the warp and weft threads to be scattered, or even fiber breakage, which will affect the production operation of CCL and lead to quality problems such as warping of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Carbon fiber base fabric composite material and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] A carbon fiber cloth base composite material, including carbon fiber cloth base, epoxy resin layer and release film, the unit weight of carbon fiber cloth base is 125g / m 2 , the thickness of the epoxy resin layer is 50 μm.

[0023] The preparation steps of this kind of carbon fiber cloth-based composite material are as follows:

[0024] Step A: Prepare the glue, mix the epoxy resin and dicyandiamide in an equivalent ratio of 1:0.95, stir for more than 4 hours, control the gelation time index of the epoxy resin mixture within 300 seconds, and prepare the glue Dispersions;

[0025] Step B: Coat the above adhesive dispersion on the release film, put the release film coated with the adhesive dispersion in an oven, and bake at 80-160°C for 3 minutes to remove the solvent , to obtain a rubberized film layer;

[0026] Step C: Alternately stack the glued film layer and carbon fiber cloth prepared in step B, and the stacking sequence is as follows: glued film layer, carbon f...

Embodiment 2

[0029] A carbon fiber cloth base epoxy resin copper clad laminate, including carbon fiber cloth base, epoxy resin layer and copper foil, the unit weight of carbon fiber cloth base is 195g / m 2 , the thickness of the epoxy resin layer is 100 μm.

[0030] The preparation steps of this carbon fiber cloth-based epoxy resin copper-clad laminate are as follows:

[0031] Step A: Prepare the glue, mix epoxy resin and dicyandiamide in an equivalent ratio of 1:1, stir for more than 4 hours, control the gelation time index of the epoxy resin mixture within 300 seconds, and prepare the glue Dispersions;

[0032] Step B: Coat the above glued dispersion on the copper foil, put the release film coated with the glued dispersion into an oven, bake at 80-160°C for 4 minutes to remove the solvent, Prepare the glued copper foil layer;

[0033] Step C: Alternately laminate the rubberized film layer and carbon fiber cloth prepared in step B, and the stacking sequence is as follows: rubberized co...

Embodiment 3

[0036] A carbon fiber cloth base composite material, including carbon fiber cloth base, epoxy resin layer and aluminum foil, the unit weight of carbon fiber cloth base is 255g / m 2 , the thickness of the epoxy resin layer is 150 μm.

[0037] The preparation steps of this kind of carbon fiber cloth-based composite material are as follows:

[0038] Step A: Prepare the glue, mix the epoxy resin and the phenolic resin in an equivalent ratio of 1:1.05, stir for more than 4 hours, control the gelation time index of the epoxy resin mixture to more than 200 seconds, and prepare the glue dispersion body;

[0039] Step B: Coat the above-mentioned glue-coated dispersion on aluminum foil, put the release film coated with glue-coated dispersion in an oven, bake at 80-160°C for 5 minutes to remove the solvent, and prepare Glue-coated aluminum foil layer;

[0040] Step C: Alternately laminate the glued film layer and carbon fiber cloth prepared in step B, and the lamination sequence is as...

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Abstract

The invention relates to the technical field of printed circuit boards, in particular to a carbon fiber base fabric composite material. The carbon fiber base fabric composite material comprises at least one layer of carbon fiber base fabric and adhesive layers. The adhesive layers are one layer more than the carbon fiber base fabric. The composite material is formed by the carbon fiber base fabric and the adhesive layers through alternately laminating in a press fit mode. The carbon fiber base fabric is made of carbon fiber through knitting in the warp and weft direction. Compared with a glass fabric base fabric bonding sheet, the carbon fiber base fabric composite material has better thermal conductivity, overcomes the defects that weft skewing can easily happen to a carbon fiber sheet and production operations of the carbon fiber sheet is hard, greatly improves warping of products, and particularly improves the stability of the sizes of the products.

Description

technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a carbon fiber cloth-based composite material and its preparation and application. Background technique [0002] Copper-clad laminate (CCL) is a product that combines reinforcing materials and copper foil with epoxy resin as a fusion agent. Most of the traditional reinforcing materials are glass fiber cloth, and a small amount of paper or composite materials are used. The glass fiber cloth is made of glass fiber. The glass fiber cloth substrate made of glass fiber cloth has higher mechanical properties, dimensional stability, impact resistance, and moisture resistance than paper base, and its electrical properties are excellent, the working temperature is high, and its performance is affected by the environment. Small impact. However, its thermal conductivity is not good. Under the trend of electronic products becoming more and more thin and small, the adhesive sh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B7/12B32B37/12B32B37/06B32B37/10
Inventor 刘东亮
Owner GUANGDONG SHENGYI SCI TECH
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