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A kind of stereotype-flame-retardant fiber fabric for liquid forming process and preparation method thereof

A fiber fabric and liquid forming technology, which is applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of difficult flow and infiltration of fiber preforms, affecting the flow characteristics of RTM resin, and difficult to apply RTM molding process, etc., so as to achieve structural safety The effect of environmental protection and flame retardant requirements, good molecular structure compatibility, and simple and easy process methods

Active Publication Date: 2016-03-30
AVIC COMPOSITES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a higher content of flame retardant will undoubtedly increase the viscosity of the RTM resin sharply, which will greatly affect the flow characteristics of the RTM resin, making it difficult for the resin to flow and infiltrate the fiber preform. Therefore, it is used in the matrix resin. The technical means of directly adding flame retardants is difficult to apply to the RTM molding process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Heat and melt the aromatic diamine type benzoxazine resin, add 25wt% phosphorous diphenol 2-(5,5-dimethyl-4-phenyl-2-oxo-1,3,2-dioxaphospha Cyclohexane phosphonate group)-hydroquinone (DPODB), mixed evenly, prepolymerized the benzoxazine / DPODB blend at 130-170°C for 10-60min to obtain benzoxazine / DPODB prepolymerized Polymer, cooled to room temperature, mechanically ground to make powder below 50 mesh, to obtain setting-flame retardant dual-function setting agent. Sprinkle the double-functional sizing agent powder evenly on the surface of the fiber fabric, the dosage is 30g / m 2 The fiber fabric is baked by infrared to form small particles adhering to the surface of the fiber fabric, and the fiber fabric with a setting-flame retardant dual-functional sizing agent attached to the surface is obtained.

[0018] Cut the fabric to a certain size and lay it in a U-shaped pre-forming mold with 8 layers and a thickness of 2mm. Raise the temperature from room temperature to 80°...

Embodiment 2

[0020] Heat and melt the aromatic diamine type benzoxazine resin, add 30wt% of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), mix evenly, and benzoxazine The oxazine / DOPO blend is pre-polymerized at 130-170°C for 10-60 minutes to obtain a benzoxazine / DOPO prepolymer, cooled to room temperature, and mechanically ground to make a powder below 50 mesh to obtain a setting-flame retardant dual function Styling agent. Sprinkle the dual-function sizing agent powder evenly on the surface of the fiber fabric, the dosage is 22g / m 2 The fiber fabric is baked by infrared to form small particles adhering to the surface of the fiber fabric, and the fiber fabric with a setting-flame retardant dual-functional sizing agent attached to the surface is obtained.

[0021] Cut the fabric to a certain size and lay it in a U-shaped mold with 8 layers and a thickness of 2mm. Raise the temperature from room temperature to 80°C, and then naturally cool to room temperature after 80°C / pressu...

Embodiment 3

[0023] Heat and melt the aromatic diamine benzoxazine resin, add 30wt% diphenoxy (3-hydroxy) phenylphosphine oxide (BPHPPO) and mix, and put the benzoxazine / BPHPPO blend at 130-170°C Prepolymerize for 10-60 minutes to obtain benzoxazine / BPHPPO prepolymer, cool to room temperature, and mechanically grind to make a powder with a mesh size of less than 50 mesh to obtain a styling-flame retardant dual-functional styling agent. Sprinkle the dual-function sizing agent powder evenly on the surface of the fiber fabric, the dosage is 25g / m 2 The fiber fabric is baked by infrared to form small particles adhering to the surface of the fiber fabric, and the fiber fabric with a setting-flame retardant dual-functional sizing agent attached to the surface is obtained.

[0024] Cut the fabric to a certain size and lay it in a U-shaped mold with 8 layers and a thickness of 2mm. Raise the temperature from room temperature to 80°C, and then naturally cool to room temperature after 80°C / pressuri...

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Abstract

The invention belongs to the technical field of manufacturing of fire resisting composite materials, and relates to a sizing-fire resisting fiber fabric for a liquid forming process, and a preparation method of the sizing-fire resisting fiber fabric. The preparation method comprises the steps: selecting benzoxazine resin with excellent fire resisting performance as a carrier resin, mixing benzoxazine resin with a phosphorus-containing fire retardant, pre-polymerizing to obtain a benzoxazine resin / fire retardant prepolymer, wherein the prepolymer can be heated and softened to have adhesiveness; crushing benzoxazine resin / fire retardant prepolymer, uniformly adhering the crushed benzoxazine resin / fire retardant prepolymer on the surface of a reinforced fabric through manners such as mechanical powder spreading, heating and softening, then sizing and prefabricating a fiber fabric, and preparing a fiber reinforced fire resisting composite material by adopting the liquid forming process. According to the preparation method, the process is simple, the implementation is easy, two functions of sizing and fire resisting of the fiber fabric can be realized simultaneously without influencing a chemical reaction characteristic of a matrix resin for the liquid forming process, and the fire resisting composite material with excellent performance can be prepared.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant composite material manufacturing, and relates to a shaping-flame-retardant dual-function fiber fabric suitable for a liquid forming process and a preparation method thereof. Background technique [0002] Resin-based composite materials have been widely used in the fuselage structure of advanced civil aircraft due to their excellent properties such as light weight, high strength, designability, fatigue resistance, and corrosion resistance. Moreover, its application scope continues to expand to the interior structure of civil aircraft, such as cabin panels, seats, luggage compartments and other parts. An important requirement for composite materials in the interior structure of civil aircraft is the requirements for safety, environmental protection and flame retardancy. At present, there are mainly two methods for flame retardant modification of resin-based composite materials at home and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/288D06M13/285D06M11/72D06M15/59D06M23/00D06M101/40D06M101/36D06M101/04
Inventor 刘刚包建文胡晓兰李伟东
Owner AVIC COMPOSITES