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Method for preparing carbon nanometer paper flame resistant polymer matrix composite material

A flame-retardant polymer, carbon nano-paper technology, applied in chemical instruments and methods, layered products, glass/slag layered products, etc. The effect of fire-retardant properties and good flame-retardant properties

Inactive Publication Date: 2015-07-01
SHENYANG AEROSPACE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that existing resin-based fiber reinforced composite materials are used in military and civilian aerospace vehicles, ships, missiles and battlefield bunker structures, which are inflammable, fast in burning speed, not easy to extinguish, and the toxic gas produced pollutes the environment and is unsafe. factors; and adding nanomaterials such as carbon nanotubes in the preparation process of composite materials can improve its flame retardancy, but its flame retardant and fireproof properties are related to the dispersion and content of nanomaterials such as carbon nanotubes. When dispersed in the body, due to the characteristics of nanomaterials such as carbon nanotubes, they tend to agglomerate, thereby affecting the overall mechanical properties of composite materials and other technical issues. A method for preparing carbon nanopaper flame-retardant polymer-based composite materials is provided. This method Adding at least one flame retardant material into the carbon nano paper structure, and then using the carbon nano paper structure as the flame retardant outer layer of the composite material to form a carbon nano paper flame retardant polymer matrix composite material, the realization steps are:

Method used

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  • Method for preparing carbon nanometer paper flame resistant polymer matrix composite material
  • Method for preparing carbon nanometer paper flame resistant polymer matrix composite material

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Embodiment 1

[0034] Carbon nanopaper is a self-supporting felt structure formed by intertwined carbon nanotubes. This continuous defect-free network structure can form a protective barrier to reduce the rate of composite material loss and material combustion. Since the size of carbon nanotubes is nanoscale, the structure of carbon nanopaper formed by them and the gaps between them is very dense. When a fire occurs, this dense network structure and gaps can prevent the penetration of gases and substances, so when carbon nanotubes Paper has very good flame retardant properties when used as the outer skin of polymer-based composites.

[0035] Since there are only carbon nanotubes inside the carbon nano paper, when a fire occurs, the carbon nanotube carbon deposition protective layer is formed slower than the speed of flame expansion. In order to improve the performance of carbon nano paper flame retardant composite materials, this paper Invented to add a variety of flame retardant materials (...

Embodiment 2

[0050] The carbon nanotubes of this embodiment select commercially available single-walled carbon nanotubes with a diameter of 6-10nm and a length of 10-25 μm; the flame retardant is POSS monomer; Two kinds of sodium dialkylbenzene sulfonate are mixed; the realization steps are:

[0051] (1) The mass ratio of carbon nanotubes to flame retardant is 10:2, wherein the carbon nanotubes have a diameter of 6-10 nm and a length of 10-25 μm;

[0052] (2) get carbon nanotube flame retardant mixture and anionic surface dispersant to mix by 1: 20 mass ratio;

[0053] (3) Put the carbon nanotube / flame retardant mixture and the surface dispersant into the mortar and grind for 1-60min, pour it into a beaker, add plasma water until the concentration of the carbon nanotube / flame retardant mixture is 0.01wt%, and the surface dispersant The concentration is 0.1wt%;

[0054] (4) Pour the mixed solution into a magnetic stirrer, control the temperature at 20-60°C, disperse for 15-60min, and defo...

Embodiment 3

[0063] The carbon nanotubes of this embodiment select commercially available functionalized carbon nanotubes (hydroxylated or carboxylated carbon nanotubes, with a diameter of 6-10 nm and a length of 10-25 μm; the flame retardant is ammonium polyphosphate, sodium-based nanomono Soil mixing; the anionic surfactant is sodium dodecylsulfonate;

[0064] Implementation steps:

[0065] (1) The mass ratio of carbon nanotubes to flame retardant is 10:3, the diameter of functionalized carbon nanotubes is 11-20nm, and the length is 20-35μm;

[0066] (2) Take the carbon nanotube / flame retardant mixture and mix it with anionic surface dispersant in a ratio of 1:15;

[0067] (3) Put the carbon nanotube / flame retardant mixture and the surface dispersant into a mortar and grind for 1-60min, pour into a beaker, add plasma water until the concentration of the carbon nanotube / flame retardant mixture is 1.0wt%, and the surface dispersant The concentration is 0.01wt%;

[0068] (4) Pour the mix...

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Abstract

The invention provides a method for preparing a carbon nanometer paper flame resistant polymer matrix composite material, which is intended to solve problems that: the current resin-based fiber reinforced composite materials exist unsafe factors of flammability, high combustion speed, difficult extinguishing, and environment pollution because of toxic gas generation; and addition of nano-materials like carbon nanotubes in a composite material can improves flame resistance of the composite material, but flame resistant and fireproof characteristics, and dispersibility and content of the nano-materials like carbon nanotubes affect integral mechanical properties of the composite material. The method comprises: adding at least one flame resistant material into a carbon nanometer paper structure, and then using the carbon nanometer paper structure as a flame resistant external layer of the composite material to form the carbon nanometer paper flame resistant polymer matrix composite material. The carbon nanometer paper flame resistant polymer matrix composite material has a good flame resistant characteristic, and a plurality of flame resistant materials is added into the carbon nanometer paper structure, thereby greatly raising flame resistant and fireproof characteristics of the composite material. Compared to a composite material without carbon nanometer paper, ignition time of the carbon nanometer paper flame resistant composite material can be reduced more than 10-30%, and a peak value of heat releasing speed can be reduced more than 15-45%, and a smoke releasing total amount can be reduced more than 10-30%.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant composite material, in particular to a method for preparing a carbon nano-paper flame-retardant polymer-based composite material. It belongs to the technical field of fireproof materials. Background technique [0002] Resin-based fiber-reinforced composites are widely used in military and civilian aerospace vehicles, ships, missiles and battlefield bunker structures due to their light weight, high strength and excellent process characteristics. However, due to the chemical composition and molecular structure of the polymer matrix itself, It is flammable, combustible, fast when burning, not easy to extinguish, and will produce dense smoke and toxic gases, pollute the environment, and endanger people's lives. Therefore, in order to improve the fire safety of polymer-based composite materials, it is very important to expand the application of composite materials. important. [0003] Addin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B17/02C08L63/00C08L79/08C08K13/04C08K7/06C08K7/14C08K5/54C08K3/32C08K3/34
Inventor 卢少微张春旭高禹曾宪军聂鹏王继杰王志
Owner SHENYANG AEROSPACE UNIVERSITY
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