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A kind of flame-retardant composite material floor and preparation method thereof

A flame-retardant composite material and flooring technology, which is applied in aircraft floors, aircraft accessories, etc., to ensure durable use, excellent environmental corrosion resistance, and reliable bonding effects

Active Publication Date: 2016-03-30
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional epoxy sandwich structure composite flooring on the market is difficult to meet the above-mentioned index requirements. Therefore, it is necessary to further modify and optimize the skin epoxy resin matrix on the basis of maintaining the excellent mechanical properties of the original floor material system. To improve the flame retardant performance of the floor
Although a certain scale has been formed in the fields of epoxy prepreg, Nomex, aluminum honeycomb, and sandwich structure composite materials in China, products with light weight, excellent mechanics, and flame-retardant sandwich structure composite flooring have not yet appeared on the market. , the only research is mainly focused on the mechanism of the impact resistance of sandwich panels

Method used

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  • A kind of flame-retardant composite material floor and preparation method thereof
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  • A kind of flame-retardant composite material floor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] It is required to prepare 9.9mm ~ 10.4mm thickness, surface density ≤ 2.5kg / m 2 The standard floor is used in the low-passenger area of ​​the cabin; according to the design load and thickness requirements, type I aramid paper honeycomb (Nomex honeycomb) is selected, with a cell size of 1.83mm and a density of 80kg / m 3 , the thickness is 9.5mm.

[0046] Prepared by method one, the steps are:

[0047] 1) Add 40kgE44 epoxy resin, 20kgAFG-90 epoxy resin and 20kg acetone in a 100L reactor, and stir at a speed of 100 rpm to obtain an epoxy resin solution;

[0048] 2) in the epoxy resin solution that step 1) obtains, add successively 8.5kg carboxyl-terminated nitrile rubber toughening agent, 3kg aluminum hydroxide and 6kg polyphosphate flame retardant, 6kg dicyandiamide curing agent and 3kg1,1 -Dimethyl 3-phenylurea accelerator, then stirred at a speed of 500 rpm for 100 minutes, and finally the stirred mixed solution was ground by three rollers to obtain a modified epoxy re...

Embodiment 2

[0054] It is required to prepare 9.9mm ~ 10.4mm thickness, surface density ≤ 3.8kg / m 2 The standard floor is used in the kitchen or other high-load areas of the passenger cabin; according to the design load and thickness requirements, type I aramid paper honeycomb (Nomex honeycomb) is selected, with a cell size of 1.83mm and a density of 144kg / m 3 , the thickness is 9.2mm.

[0055] Prepared by method one, the steps are:

[0056] 1) Add 40kgE44 epoxy resin, 20kgAFG-90 epoxy resin and 20kg acetone in a 100L reactor, and stir at a speed of 100 rpm to obtain an epoxy resin solution;

[0057] 2) in the epoxy resin solution that step 1) obtains, add successively 8.5kg carboxyl-terminated nitrile rubber toughening agent, 3kg aluminum hydroxide and 6kg polyphosphate flame retardant, 6kg dicyandiamide curing agent and 3kg1,1 -Dimethyl 3-phenylurea accelerator, then stirred at a speed of 500 rpm for 100 minutes, and finally the stirred mixed solution was ground by three rollers to obt...

Embodiment 3

[0062] It is required to prepare 9.9mm ~ 10.4mm thickness, surface density ≤ 5.4kg / m 2 The standard floor is used in the cargo compartment area; according to the design load and thickness requirements, type I aramid paper honeycomb (Nomex honeycomb) is selected, with a cell size of 1.83mm and a density of 192kg / m 3 , the thickness is 8.8mm.

[0063] Prepared by method one, the steps are:

[0064] 1) Add 40kgE44 epoxy resin, 20kgAFG-90 epoxy resin and 20kg acetone in a 100L reactor, and stir at a speed of 100 rpm to obtain an epoxy resin solution;

[0065] 2) in the epoxy resin solution that step 1) obtains, add successively 8.5kg carboxyl-terminated nitrile rubber toughening agent, 3kg aluminum hydroxide and 6kg polyphosphate flame retardant, 6kg dicyandiamide curing agent and 3kg1,1 -Dimethyl 3-phenylurea accelerator, then stirred at a speed of 500 rpm for 100 minutes, and finally the stirred mixed solution was ground by three rollers to obtain a modified epoxy resin matrix...

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Abstract

The invention relates to a flame-retardant composite material floor board as well as a preparation method thereof, and belongs to the technical field of composite material floor boards. The floor board has a sandwiched structure, and comprises skin, a core material as well as flame-retardant structure glue for bonding the skin and the core material; the material of the skin is continuous fiber reinforced epoxy resin prepreg; the material of the core material is aramid fiber honeycomb; the flame-retardant structure glue is epoxy resin. According to the invention, the fiber material prepreg which is prepared from halogen-free flame retardant and toughening modified epoxy resin acts as the material of the skin, so that the sandwiched layer structure composite material has a favorable flame-retardant effect, and the excellent mechanical performance of shock resistance, bending and pressing resistance, abrasion resistance and the like of epoxy materials are kept for the material.

Description

technical field [0001] The invention relates to a flame-retardant composite material floor and a preparation method thereof, belonging to the technical field of composite material floors. Background technique [0002] Due to its high specific strength and specific stiffness, sandwich structure composite materials are widely used as floor materials to replace metal floors to further improve the weight reduction effect of aircraft. For example, most of Boeing's aircrafts currently on sale use Nomex honeycomb, glass cloth honeycomb, aluminum honeycomb or BALSA wood as the sandwich material, and glass fiber or carbon fiber reinforced epoxy resin prepreg as the skin Composite floor made of materials bonded by structural adhesive and then hot-pressed. The typical brand is Gillfloor produced by M.C.Gill Company TM Series of products, its advantages are mainly high mechanical properties such as impact resistance, bending resistance, and abrasion resistance, which benefit from the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C1/18C08L63/00C08K3/22
Inventor 王伟左小彪冯志海刘武颜雪纪高宁朱晓光
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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