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Preparation method of micro-nanoparticle synergic interlaminar toughened bismaleimide/carbon fiber composite material

A technology of micro-nano particles and composite materials, which is applied in the field of preparation of micro-nano particles synergistic interlayer toughened double horse/carbon fiber composite materials, can solve problems such as complex processes, reduce reactivity, weak anti-damage ability, improve layer The effect of fracture toughness

Active Publication Date: 2017-12-12
中威北化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the complex technical problems existing in the interlayer toughening technology of Shuangma prepreg and its composite materials, and to provide a kind of interlayer toughened Shuangma / carbon fiber composite material suitable for industrial production. preparation method

Method used

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  • Preparation method of micro-nanoparticle synergic interlaminar toughened bismaleimide/carbon fiber composite material
  • Preparation method of micro-nanoparticle synergic interlaminar toughened bismaleimide/carbon fiber composite material
  • Preparation method of micro-nanoparticle synergic interlaminar toughened bismaleimide/carbon fiber composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) "Multiphase compounding" method: Add PEI micron particles to the liquid toughening agent containing diallyl bisphenol A (DABPA) at 100°C, and stir it evenly, and then add Bima micron powder (molar ratio BMI: DABPA=1:0.87), after continuing to stir evenly, place it on a three-roll mill for physical blending to obtain a low-viscosity resin system with good dispersibility, in which the mass fraction of PEI micron particles is 4%; (2) (1) ) The obtained double horse resin system is coated at 70°C and combined with T800 carbon fiber reinforcement at 100°C to prepare a prepreg; (3) The prepreg obtained in (2) is cut, layered, and molded. , To obtain a dual-horse / carbon fiber composite material toughened by PEI micron particles.

Embodiment 2

[0023] (1) "Multiphase composite" method: Add PEI micro-particles and core-shell nanoparticles to a liquid toughening agent containing diallyl bisphenol A (DABPA) at 85°C, and mix initially, and then add Shuangma powder (Molar ratio BMI:DABPA=1:0.87), after continuing to stir uniformly, place it on a three-roll mill for physical blending to obtain a low-viscosity resin system with good dispersibility, in which the mass fraction of PEI micron particles is 3%. The mass fraction of core-shell nanoparticles is 1%; (2) The Bima resin system obtained in (1) is coated at 60°C and combined with T800 carbon fiber reinforcement at 90°C to prepare a prepreg; (3) ) The prepreg obtained in (2) is cut, layered, and compression molded to obtain a bima / carbon fiber composite material toughened by PEI micron particles between layers.

Embodiment 3

[0025] (1) "Multiphase composite" method: Add PEI micro-particles and core-shell nanoparticles to a liquid toughening agent containing diallyl bisphenol A (DABPA) at 70°C, and mix initially, and then add Shuangma powder (Molar ratio BMI:DABPA=1:0.87), after continuing to stir evenly, place it on a three-roll mill for physical blending to obtain a low-viscosity resin system with good dispersibility, in which the quality of PEI micro-particles and core-shell nanoparticles The fraction is 2% each; (2) Coat the Bima resin system obtained in (1) at 50°C, and heat-press and compound with T800 carbon fiber reinforcement at 80°C to prepare prepregs; (3) Put (2) The obtained prepreg is cut, layered, and compression molded to obtain a bima / carbon fiber composite material toughened by PEI micron particles.

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Abstract

The invention relates to a preparation method of a micro-nanoparticle synergic interlaminar toughened bismaleimide / carbon fiber composite material. The preparation method aims at solving the technical problem of complicated technology in an existing interlaminar toughening technology of bismaleimide prepreg and a composite material thereof. The preparation method comprises the following steps: dispersing thermoplastic micron particles and core-shell nanoparticles into a liquid toughening agent combined by an allyl compound and epoxy resin; adding bismaleimide micro powder for premixing and then putting the bismaleimide micro powder on a three-roller grinder for carrying out physical blending; coating a film and then hot-pressing, presoaking and compounding the film with a carbon fiber reinforcement and obtaining prepreg of multi-scale micro-nanoparticles enriched on the surface of the reinforcement and among synnema by using the screening effect of the fiber; carrying out compression molding to obtain the micro-nanoparticle synergic interlaminar toughened composite material. The technical scheme disclosed by the invention has the advantages that the manufacturability of the prepreg is improved and the interlaminar fracture toughness of the composite material is also improved.

Description

Technical field [0001] The invention belongs to the field of preparation of carbon fiber composite materials, and particularly relates to a preparation method of a micro-nano particle collaborative interlayer toughening bi-horse / carbon fiber composite material. Background technique [0002] Prepreg is a combination of resin matrix and reinforcing fiber. It is an intermediate for preparing composite materials. The traditional melting method is used to completely dissolve the materials used to form a uniform and transparent two-horse resin system. This method is easy to cause the prepreg to have no stickiness and surface Rigid, not conducive to winding and later layering, poor process performance. Chinese patent (CN1263901) discloses a method of polyetherimide modified bimar resin. The polyetherimide particles are completely dissolved in the resin system to obtain a modified bimar resin system. This method significantly improves The fracture toughness does not satisfy the processa...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08L63/00C08K7/06C08J5/24
CPCC08J5/24C08J2379/08C08J2463/00C08L79/085C08L2205/035C08L2207/02C08L2207/53C08L63/00C08L79/08C08K7/06
Inventor 李刚苏清福杨小平王丽丽
Owner 中威北化科技有限公司
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