Method for preparing bismaleimide resin-based composite material by chemical vapor deposition method, and application of composite material

A bismaleimide resin, chemical vapor deposition technology, used in textiles and papermaking, fiber processing, carbon fiber and other directions, can solve problems such as unattainable mechanical properties, achieve weak interface bonding strength, improve mechanical properties, The effect of improving impact performance

Active Publication Date: 2020-02-21
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

Method used

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  • Method for preparing bismaleimide resin-based composite material by chemical vapor deposition method, and application of composite material

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Experimental program
Comparison scheme
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Example Embodiment

[0033] Example 1:

[0034] This embodiment is a method for preparing a bismaleimide resin-based composite material using a chemical vapor deposition method of carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is performed as follows:

[0035] (1) Surface treatment of carbon fiber: Put the carbon fiber in excess acetone, heat it to reflux at 60°C for 24h, and rinse it with acetone repeatedly before drying. The carbon fiber is placed in an excess of concentrated nitric acid, reacted at a constant temperature of 60°C for 2 hours, and washed repeatedly with deionized water and dried.

[0036] (2) Load metal ions: Place the surface-treated carbon fiber in 0.1mol / L NiNO 3 After soaking 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) Carbon nanotube growth: The carbon fiber after the above tw...

Example Embodiment

[0044] Example 2:

[0045] This embodiment is a method for preparing a bismaleimide resin-based composite material using a chemical vapor deposition method of carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is performed as follows:

[0046] (1) Surface treatment of carbon fiber: Put the carbon fiber in excess acetone, heat it to reflux at 60°C for 24h, and rinse it with acetone repeatedly before drying. The carbon fiber is placed in an excess of concentrated nitric acid, reacted at a constant temperature of 60°C for 2 hours, and washed repeatedly with deionized water and dried.

[0047] (2) Load metal ions: Place the surface-treated carbon fiber in 0.15mol / L NiNO 3 After soaking 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) Carbon nanotube growth: The carbon fiber after the above t...

Example Embodiment

[0054] Example 3:

[0055] This embodiment is a method for preparing a bismaleimide resin-based composite material using a chemical vapor deposition method of carbon fiber-carbon nanotube micro-nano synergistic reinforcement phase, which is performed as follows:

[0056] (1) Surface treatment of carbon fiber: Put the carbon fiber in excess acetone, heat it to reflux at 65°C for 24h, rinse it with acetone and dry it repeatedly. The carbon fiber is placed in excess concentrated nitric acid, reacted at 65°C for 2 hours, washed repeatedly with deionized water and dried.

[0057] (2) Load metal ions: Place the surface-treated carbon fiber in 0.1mol / L NiNO 3 Soak in the aqueous solution for 1.5 hours, 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) Carbon nanotube growth: The carbon fiber after the above two steps of treatment is placed in the center of t...

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Abstract

The invention relates to a method for preparing a bismaleimide resin-based composite material with a carbon fiber-carbon nanotube reinforcement phase by a chemical vapor deposition method. The chemical vapor deposition method is used to prepare a carbon fiber-carbon nanotube micro-nano reinforcement phase, NiNO3 particles with Ni ions are preloaded on the surface of carbon fibers, then high-temperature reduction is performed to obtain nano Ni particles with pure surfaces, ethanol is used as a carbon source, catalytic cracking is performed on the surface of the catalyst particles, and carbon nanotubes are grown through the deposition of carbon atoms. Then the prepared carbon fiber-carbon nanotube micro-nano reinforcement phase is used to compound with a BMI-PEI-CNT matrix resin to prepare the bismaleimide resin-based composite material with high strength and high modulus. Compared with the prior art, the method can relatively conveniently control the length, diameter, distribution, anddensity of the carbon nanotubes on the surface of the carbon fibers, so that the synergistic effect of the carbon fibers and the carbon nanotubes is realized, expansion paths of horizontal and vertical stresses at interfaces are changed, stress concentration is dispersed, and thereby mechanical properties of the composite material are improved.

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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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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