Cyanate resin/ carbon fiber composite material and its preparing process

A technology of cyanate ester resin and composite materials, which is applied in the direction of textiles and papermaking, can solve the problems of reducing the mechanical properties of composite materials, reducing the mechanical properties of resins, and affecting the application of composite materials, so as to solve the problem of low shear strength and increase the external field Force transmission, favorable effect for wide use

Inactive Publication Date: 2007-05-30
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods are relatively effective and have been applied, but there are also certain problems. For example, the braided structure can make the existing resin system play a greater potential. Both the resin system and the method itself are conducive to reducing costs. However, this Difficult to use in complex structures
In addition, the braided structure inevitably causes bending...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] By weight, melt 100 parts of 4,4'-dicyanatodiphenylpropane at 150°C, keep it warm for 3 hours, then add 1 part of multi-walled carbon nanotubes at 150°C and mix it evenly, and keep it warm for 3 hours, Reduce to room temperature to obtain a resin matrix, which is a modified cyanate resin; add acetone to the prepared modified cyanate resin matrix, and prepare a resin glue solution at a volume ratio of 1:1, and apply the above glue solution to the On PX35FBUD0300 carbon fiber cloth, after airing at room temperature for 15 hours, the weight ratio of volatile matter in the resin matrix is ​​less than 1%, and then bake at 80°C for 10 minutes to preheat, spread in the mold, and send the mold to a hot press for pressing. The hot pressing process is as follows: after staying at 120°C for 30 minutes, start to pressurize (1 MPa), hold the pressure at 160°C, 180°C, and 200°C for 2 hours, and then cool to room temperature. After the pressing, the taken-out plate was post-treated at...

Embodiment 2

[0027] By weight, mix 100 parts of 4,4'-dicyanatodiphenylpropane and 4 parts of alicyclic epoxy resin TDE-85 at 100°C, keep the mixture transparent for 1h, and then heat it at 100°C Add 1 part of multi-walled aminated carbon nanotubes and 1 part of single-walled carbon nanotubes and mix evenly therewith, keep warm for 2 hours, and cool down to room temperature to obtain a modified resin. Acetone is added to the prepared modified cyanate resin matrix, and the resin glue solution is prepared at a volume ratio of 1:1. Brush the above glue on the PX35FBUD0300 carbon fiber cloth, let it dry at room temperature for 15 hours and bake at 80°C for 10 minutes, and spread it in the mold. Send the mold to a hot press for hot pressing. The pressing process is: pressurize (1 MPa) after staying at 130°C for 30 minutes, hold pressure at 160°C, 180°C, and 200°C for 2 hours, and then cool to room temperature. After the pressing, the taken-out plate was post-treated at 230°C for 4 hours to obta...

Embodiment 3

[0033] By weight, melt 100 parts of 4,4'-dicyanatodiphenylpropane at 80°C and keep it warm for 1h, then add 3 parts of single-wall aminated carbon nanotubes at 80°C and mix it evenly, keep it warm for 4h After cooling down to room temperature, the modified cyanate resin matrix was obtained. Acetone is added to the above resin matrix, and the resin glue is prepared at a volume ratio of 1:1. Wet the above glue on the IM7 carbon fiber through the winding process, let it air at room temperature for 15 hours and bake it at 80°C for 10 minutes, spread it in the mold, and send the mold to a hot press for hot pressing. The hot pressing process is as follows: after staying at 130°C for 30 minutes, start to pressurize (1 MPa), hold the pressure at 160°C, 180°C, and 200°C for 2 hours, and then cool to room temperature. After the pressing, the taken-out plate was post-treated at 230°C for 4 hours to obtain a cyanate / carbon fiber composite material.

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PUM

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Abstract

The invention discloses a making method of cyanate resin/carbon fiber composite material, which comprises the following steps: 1) heating and fusing cyanate resin to form transparent pattern under 80-100 deg.c; insulating 1-3h; adding 1-3% carbon nanometer pipe; insulating under 80-150 deg.c for 2-4h; cooling to indoor temperature; obtaining resin base; 2) adding acetone in the resin base with bulk rate at 1:0.8-1:1.2; allocating glue solution; immersing carbon fiber or carbon fiber cloth in the glue solution; drying; doing hot pressing to mould after the quantity of volatile substance is less than 1%; obtaining the product.

Description

technical field [0001] The invention relates to a composition of thermosetting resin and carbon fiber and a preparation method thereof, in particular to a cyanate resin / carbon fiber composite material. Background technique [0002] Cyanate ester resin (Cyanate Ester, CE) is a high-performance thermosetting resin matrix developed in recent years. It has outstanding dielectric properties in a wide frequency range, and has extremely low water absorption, excellent heat resistance and The combination of mechanical properties and excellent processability, these attractive properties make it show great potential in the preparation of structure / function integrated resin matrix composites. [0003] In order to enhance the strength of the resin, reinforcing materials are usually added to the resin matrix to form a composite material. The commonly used reinforcing material is carbon fiber, which can be added directly or carbon fiber cloth. The performance of composite materials is no...

Claims

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Application Information

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IPC IPC(8): C08L75/12C08K7/06D06N7/06C08K3/04C08L63/00
Inventor 顾嫒娟杨莉蓉梁国正张增平何少波
Owner SUZHOU UNIV
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