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Cyanate resin/ carbon fiber composite material and its preparing process

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

Inactive Publication Date: 2008-10-01
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 of the fibers, which reduces the mechanical properties of the composite
[0005] Cyanate resin itself is flammable, and one of the requirements of modern industry for materials is to have excellent flame retardant properties. Flame retardant properties, however, the addition of flame retardants will reduce the mechanical properties of the resin and affect the application of composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] By weight, melt 100 parts of 4,4'-dicyanato diphenylpropane at 150°C and keep it warm for 3 hours, then add 1 part of multi-walled carbon nanotubes at 150°C and mix it evenly. After keeping it for 3 hours, The resin matrix is ​​obtained by lowering to room temperature, which is the modified cyanate ester resin; acetone is added to the modified cyanate ester resin matrix, and the resin glue is prepared according to the volume ratio of 1:1, and the above glue is applied to On the PX35FBUD0300 carbon fiber cloth, leave it at room temperature for 15 hours to make the volatile content of the resin matrix less than 1% by weight, then bake at 80°C for 10 minutes for preheating, spread it in a mold, and send the mold to a hot press for compression. The hot pressing process is as follows: After staying at 120°C for 30 minutes, pressure is started (1MPa), and the pressure is maintained at 160°C, 180°C, and 200°C for 2 hours, and then cooled to room temperature. After the pressing is ...

Embodiment 2

[0027] By weight, mix 100 parts of 4,4'-dicyanato diphenylpropane and 4 parts of alicyclic epoxy resin TDE-85 at 100°C. After the mixture is transparent, keep it for 1h, and then at 100°C Add 1 part of multi-walled aminated carbon nanotubes and 1 part of single-walled carbon nanotubes and mix them uniformly. After keeping the temperature for 2 hours, it is cooled to room temperature to obtain a modified resin. Acetone is added to the prepared modified cyanate ester resin matrix, and the resin glue is prepared according to a volume ratio of 1:1. Brush the above glue on the PX35FBUD0300 carbon fiber cloth, leave it in the air for 15h at room temperature and bake it at 80℃ for 10min, and then spread it in the mold. The mold was sent to a hot press for hot pressing. The pressing process was as follows: stay at 130°C for 30 minutes and then pressurize (1MPa), hold the pressure at 160°C, 180°C, and 200°C for 2 hours, and then cool to room temperature. After the pressing is finished, the...

Embodiment 3

[0033] By weight, melt 100 parts of 4,4'-dicyanato diphenylpropane at 80°C and keep it warm for 1h, then add 3 parts of single-walled aminated carbon nanotubes at 80°C and mix it evenly, keep it warm for 4h After that, it was lowered to room temperature to obtain a modified cyanate ester resin matrix. Acetone is added to the above-mentioned resin matrix, and a resin glue solution is prepared according to a volume ratio of 1:1. The above glue solution was infiltrated onto the IM7 carbon fiber through a winding process, and then left in the air at room temperature for 15 hours and dried at 80°C for 10 minutes, then spread in a mold, and the mold was sent to a hot press for hot pressing. The hot pressing process is as follows: After staying at 130°C for 30 minutes, pressure is started (1MPa), and the pressure is maintained at 160°C, 180°C, and 200°C for 2 hours, and then cooled to room temperature. After the pressing is finished, the taken out plate is post-treated at 230°C for 4 hou...

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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 ester resin / carbon fiber composite material. Background technique [0002] 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 at the same time has extremely low water absorption, excellent heat resistance and Comprehensive mechanical properties and excellent processability, these eye-catching characteristics 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, reinforcement materials are usually added to the resin matrix to form a composite material. The commonly used reinforcement material is carbon fiber, which can be directly added to carbon fiber or carbon fiber cloth. The performance of composi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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