Aramid fiber reinforced PPESK base composite material interfacial modifying method

Abstract

This invention is related to the interface modified method of aromatic fiber reinforced poly phthalazinone ehter sulfone ketone (PPESK) compound, using low-temperature plasma technology. The processed conditions are as follows: the atmosphere is oxygen, nitrogen, air, free ammonia or argon, the power is 10-400W, the time is 1-30 minutes, and the atmospheric pressure in the processing cavity is low pressure of 1-100Pa, normal pressure or high pressure of 1.01*105-106Pa. Etching the surface of Armoc aromatic fiber and modifying it by grafting, impregnating the modified Aromc aromatic fiber and the PPESK emulsion of 5-50% part by weight to prepare the prepreg of one-way fiber reinforced PPESK compound, and then preparing the said compound by using hot-pressed molding technology. The modified Aromc aromatic and the PPESK base can form a good interface layer, furthest realize the integrated performance of the compound, which is capable to meet the operating requirements of heat resistance and implement commercial processes in batch, continuity and large scale.

Description

technical field

[0001] The invention belongs to the scientific and technical field of advanced composite materials, in particular to a method for improving the interfacial properties of aramid fiber reinforced polyarylether sulfone ketone resin-based composite materials through low-temperature plasma technology. Background technique

[0002] The fiber-reinforced thermoplastic resin matrix composite material is composed of two parts, the reinforcing fiber and the thermoplastic resin matrix, and the interface is formed between the two parts. The composition, properties, bonding mode and bonding strength of the interface have an important influence on the mechanical properties of composite materials. The stress transfer between the fiber and the matrix in the composite mainly depends on the shear stress of the interface, and the ability to transfer the stress depends on the performance of the interface. Form an effective interfacial bond between them. The interface is an extr...

Examples

Embodiment 1

[0023] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller makes the oxygen flow rate to be 60-90sccm, and the air pressure is kept at 30-40Pa, and the plasma output power is 200W for 10 minutes, and the fiber is quickly taken out by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution is compounded to make unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material is prepared according to the following process:

[0024] Armoc aramid fiber→plasma treatment→prepreg→drying→

[0025] Fiber prepreg sheet → hot pressing → demoulding → unidirectional board → test piece

[0026] The process of making fiber prepreg is as follows:

[0027] resin concentrat...

Embodiment 2

[0032] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller makes the oxygen flow rate to be 60-90sccm, and the air pressure is kept at 30-40Pa, and the plasma output power is 200W for 10 minutes, and the fiber is quickly taken out by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution compounded into a unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material was prepared according to the process flow of Example 1.

[0033] The process of making fiber prepreg is as follows:

[0034] resin concentration

Dipping temperature

traction speed

Squeegee stick spacing

drying temperature

drying time

50％

room temperature

...

Embodiment 3

[0038] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller keeps the air flow at 60-90sccm and the air pressure at 30-40Pa, and treats it for 10 minutes under the plasma output power of 200W, and takes out the fiber rapidly by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution compounded into a unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material was prepared according to the process flow of Example 1.

[0039] The process of making fiber prepreg is as follows:

[0040] resin concentration

Dipping temperature

traction speed

Squeegee stick spacing

drying temperature

drying time

5-50％

room temperature

1.0m / ...

technical field

[0001] The invention belongs to the scientific and technical field of advanced composite materials, in particular to a method for improving the interfacial properties of aramid fiber reinforced polyarylether sulfone ketone resin-based composite materials through low-temperature plasma technology. Background technique

[0002] The fiber-reinforced thermoplastic resin matrix composite material is composed of two parts, the reinforcing fiber and the thermoplastic resin matrix, and the interface is formed between the two parts. The composition, properties, bonding mode and bonding strength of the interface have an important influence on the mechanical properties of composite materials. The stress transfer between the fiber and the matrix in the composite mainly depends on the shear stress of the interface, and the ability to transfer the stress depends on the performance of the interface. Form an effective interfacial bond between them. The interface is an extr...

Examples

Embodiment 1

[0023] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller makes the oxygen flow rate to be 60-90sccm, and the air pressure is kept at 30-40Pa, and the plasma output power is 200W for 10 minutes, and the fiber is quickly taken out by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution is compounded to make unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material is prepared according to the following process:

[0024] Armoc aramid fiber→plasma treatment→prepreg→drying→

[0025] Fiber prepreg sheet → hot pressing → demoulding → unidirectional board → test piece

[0026] The process of making fiber prepreg is as follows:

[0027] resin concentrat...

Embodiment 2

[0032] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller makes the oxygen flow rate to be 60-90sccm, and the air pressure is kept at 30-40Pa, and the plasma output power is 200W for 10 minutes, and the fiber is quickly taken out by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution compounded into a unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material was prepared according to the process flow of Example 1.

[0033] The process of making fiber prepreg is as follows:

[0034] resin concentration

Dipping temperature

traction speed

Squeegee stick spacing

drying temperature

drying time

50％

room temperature

...

Embodiment 3

[0038] Wrap the Armoc aramid fiber evenly on the glass frame, place it in the central area of ​​the cavity of the radio frequency inductively coupled microwave plasma (ICP) device, turn on the vacuum pump to draw the vacuum of the plasma cavity below 1Pa, and adjust the gas inlet The mass flow controller keeps the air flow at 60-90sccm and the air pressure at 30-40Pa, and treats it for 10 minutes under the plasma output power of 200W, and takes out the fiber rapidly by continuous winding method and polyarylether sulfone ketone resin (PPESK) solution compounded into a unidirectional fiber prepreg, and the Armoc aramid fiber reinforced PPESK unidirectional composite material was prepared according to the process flow of Example 1.

[0039] The process of making fiber prepreg is as follows:

[0040] resin concentration

Dipping temperature

traction speed

Squeegee stick spacing

drying temperature

drying time

5-50％

room temperature

1.0m / ...

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