A kind of method and application of chemical vapor deposition method for preparing bismaleimide resin-based composite material

A technology of bismaleimide resin and chemical vapor deposition, which is applied in fiber treatment, textiles and papermaking, carbon fiber, etc., can solve the problems that the mechanical properties cannot be achieved, and achieve the effect of improving mechanical properties and improving mechanical locking effect

Active Publication Date: 2021-12-31
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this technical solution, the prepreg is only obtained by prepolymerization after adding DBA, and the obtained bismaleimide resin-based composite material is still a conventional performance material, and its mechanical properties still cannot meet the needs of current engineering materials.

Method used

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  • A kind of method and application of chemical vapor deposition method for preparing bismaleimide resin-based composite material

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Embodiment 1

[0034] This embodiment is a method for preparing a bismaleimide resin-based composite material by chemical vapor deposition using a carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is carried out according to the following steps:

[0035] (1) Carbon fiber surface treatment: Put the carbon fiber in excess acetone, heat and reflux at 60°C for 24 hours, rinse with acetone repeatedly and dry. The above carbon fibers were placed in excess concentrated nitric acid, reacted at a constant temperature of 60°C for 2 hours, washed with deionized water repeatedly and dried.

[0036] (2) Loading metal ions: place the surface-treated carbon fiber in 0.1mol / L NiNO 3 Soak in the aqueous solution for 1 hour, take out the carbon fiber and place it in an oven to dry the surface moisture, nickel nitrate particles will precipitate and crystallize on the surface of the carbon fiber.

[0037] (3) Growth of carbon nanotubes: Place the carbon fiber treated in the previou...

Embodiment 2

[0045] This embodiment is a method for preparing a bismaleimide resin-based composite material by chemical vapor deposition using a carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is carried out according to the following steps:

[0046] (1) Carbon fiber surface treatment: Put the carbon fiber in excess acetone, heat and reflux at 60°C for 24 hours, rinse with acetone repeatedly and dry. The above carbon fibers were placed in excess concentrated nitric acid, reacted at a constant temperature of 60°C for 2 hours, washed with deionized water repeatedly and dried.

[0047] (2) Loading metal ions: place the surface-treated carbon fiber in 0.15mol / L NiNO 3 Soak in the aqueous solution for 1 hour, take out the carbon fiber and place it in an oven to dry the surface moisture, nickel nitrate particles will precipitate and crystallize on the surface of the carbon fiber.

[0048] (3) Growth of carbon nanotubes: Place the carbon fiber treated in the previo...

Embodiment 3

[0055] This embodiment is a method for preparing a bismaleimide resin-based composite material by chemical vapor deposition using a carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is carried out according to the following steps:

[0056] (1) Carbon fiber surface treatment: put the carbon fiber in excess acetone, heat and reflux at 65°C for 24 hours, rinse with acetone repeatedly, and then dry. The above carbon fibers were placed in excess concentrated nitric acid, reacted at a constant temperature of 65°C for 2 hours, washed with deionized water repeatedly and dried.

[0057] (2) Loading metal ions: place the surface-treated carbon fiber in 0.1mol / L NiNO 3 Soak in the aqueous solution for 1.5h, take out the carbon fiber and place it in an oven to dry the surface moisture, nickel nitrate particles will precipitate and crystallize on the surface of the carbon fiber.

[0058] (3) Growth of carbon nanotubes: place the carbon fiber treated in the pre...

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Abstract

The invention relates to a method for preparing a bismaleimide resin-based composite material of a carbon fiber-carbon nanotube reinforced phase by chemical vapor deposition. The method of chemical vapor deposition is used to pre-load NiNO with Ni ions on the surface of the carbon fiber. 3 Particles, and then high-temperature reduction to obtain surface-pure nano-Ni particles, using ethanol as a carbon source, catalytic cracking on the surface of catalyst particles, and growing carbon nanotubes through the deposition of carbon atoms. Then, the prepared carbon fiber-carbon nanotube micro-nano reinforcement phase is combined with the BMI-PEI-CNT matrix resin to prepare a bismaleimide resin-based composite material with high strength and high modulus. Compared with the prior art, the present invention can more conveniently control the length, diameter, distribution and density of carbon nanotubes on the surface of carbon fibers, thereby realizing the synergistic effect of carbon fibers and carbon nanotubes, changing the expansion of horizontal stress and vertical stress at the interface path, disperse stress concentration, and improve the mechanical properties of composite materials.

Description

technical field [0001] The invention relates to a preparation method of a bismaleimide resin-based composite material, in particular to a method and application of a chemical vapor deposition method for preparing a bismaleimide resin-based composite material. Background technique [0002] Carbon fiber / bismaleimide (BMI) resin composites have also been widely used in the main load-bearing parts and secondary load-bearing parts of aircraft. However, due to the presence of rigid aromatic rings and imide rings in the BMI molecular chain structure, the matrix material has the disadvantages of high brittleness and easy fracture, and the matrix BMI material must be modified by toughening and strengthening. However, the interfacial properties of carbon fiber / BMI composites often limit their application in specific structural parts. [0003] How to increase the strength and toughness of these composite materials through modification technology without changing the basic forming proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08K9/12C08K7/06C08K3/04C08J5/24D06M11/74D06M101/40
CPCC08J5/24D06M11/74C08K2201/011C08J2379/08C08K9/12C08K7/06C08K3/041D06M2101/40
Inventor 邱军施煜楠
Owner TONGJI UNIV
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