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High-toughness flame retardation phenolic prepreg composite material, its preparation method and its application

A composite material and prepreg technology, which is applied in the field of high toughness flame-retardant phenolic prepreg composite material and its preparation, can solve the problems of poor laying process, low impact resistance, and decreased flame retardancy, and achieve improved curing Effects of reactivity, toughness improvement, and moderate viscosity

Active Publication Date: 2012-10-17
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestic research on the toughening and modification of phenolic resins is mostly concentrated in the late formulation stage, and the molecular structure design and synthesis technology of phenolic resins, toughening and compounding have not been carried out for the specific application of flame-retardant phenolic prepreg composite materials in aircraft and electronic insulation devices. Systematic research on compounding technology, prepreg preparation technology, and comprehensive performance of composite materials has led to poor paving processability, low impact resistance, or flame retardancy due to the introduction of tougheners in most of the existing phenolic prepreg composite materials. Disadvantages such as obvious decline

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  • High-toughness flame retardation phenolic prepreg composite material, its preparation method and its application
  • High-toughness flame retardation phenolic prepreg composite material, its preparation method and its application
  • High-toughness flame retardation phenolic prepreg composite material, its preparation method and its application

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preparation example Construction

[0051] The preparation method of the high-toughness flame-retardant phenolic prepreg composite material is as follows:

[0052] Step 1, prepare phenolic resin matrix, specifically as follows:

[0053] (1) Synthesize a phenolic resin prepolymer by using an aldehyde compound, a phenolic compound and an organic solvent, and terminate the reaction when the gel time of the prepolymer is 1 to 10 minutes at 160°C;

[0054] (2) Add phenolic resin prepolymer into the reaction kettle, add organic solvent, toughening agent, tetrabromobisphenol A and antimony trioxide in sequence under high-speed stirring, and stir thoroughly for 60 minutes to 120 minutes to obtain phenolic resin matrix;

[0055] Step 2, preparing the phenolic prepreg composite material, as follows:

[0056] (3) Use an organic solvent to adjust the specific gravity of the phenolic resin matrix to 0.9g / m 2 ~1.2g / m 2 Between them, and then prepare phenolic prepregs with the fiber reinforced material through the solution...

Embodiment 1

[0065] Use barium hydroxide as a catalyst, ethanol as a solvent, and formaldehyde to phenol as a molar ratio of 1.5 / 1 to synthesize a phenolic resin prepolymer. When the gel time of the prepolymer at 160°C is 5 to 10 minutes, the reaction is terminated. . The mass parts of the above phenolic prepolymers are used as a benchmark to prepare the phenolic prepolymer composite formula. In a 200L reactor, add 100 mass parts of synthetic phenolic resin prepolymers, and then add 20 mass parts of ethanol and 5 mass parts of carboxyl-terminals under high-speed stirring. Nitrile-butadiene rubber, 5 parts by mass of tetrabromobisphenol A and 1.5 parts by mass of antimony trioxide were stirred thoroughly for 60 minutes to obtain a composite formula phenolic prepolymer.

[0066] With compound formula phenolic prepolymer as matrix, EW110C type (four pieces of satin, thickness 0.11mm, surface weight 110g / m 2 ) Glass cloth is used as a reinforcing material, and a high-toughness phenolic / glass ...

Embodiment 2

[0068] Use barium hydroxide as a catalyst, ethanol as a solvent, and formaldehyde to phenol as a molar ratio of 1.5 / 1 to synthesize a phenolic resin prepolymer. When the gel time of the prepolymer at 160°C is 5 to 10 minutes, the reaction is terminated. . The mass parts of the above phenolic prepolymers are used as a benchmark to prepare the phenolic prepolymer composite formula. In a 200L reactor, add 100 mass parts of synthetic phenolic resin prepolymers, and then add 20 mass parts of ethanol and 5 mass parts of carboxyl-terminals under high-speed stirring. Nitrile-butadiene rubber, 5 parts by mass of tetrabromobisphenol A and 1.5 parts by mass of antimony trioxide were stirred thoroughly for 60 minutes to obtain a composite formula phenolic prepolymer.

[0069] With compound formula phenolic prepolymer as matrix, EW250F type (eight pieces of satin, thickness 0.25mm, surface weight 300g / m 2 ) Glass cloth is used as a reinforcing material, and a high-toughness phenolic / glass...

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Abstract

The invention relates to a high-toughness flame retardation phenolic prepreg composite material, its preparation method and its application, which is characterized in that a reasonable molecular structure design and a synthesis technology are combined for substantially raising the reaction activity of a phenolic resin prepolymer under the low temperature, on the basis of phenolic resin, a thermoplastic polymer and a rubber flexibilizer are introduced, and the toughness of the composite material can be substantially enhanced, a bromine / antimony system fire retardant is introduced for making up the disadvantages of decreased flame resistance performance caused by the addition of a flexibilizer; a preparation technology for regulation and control as well as optimization of the prepreg is used for controlling the solidification degree and the volatile matter content of the prepreg, thereby the soft feeling and moderate viscosity of the phenolic prepreg can be realized, and the composite material possesses good spreading technical performance. The composite material can be use for inner decoration parts of airplane ceilings, luggage compartments and sidewall plates, ship wallboards and cabinets, and high speed train ceilings and sidewall plates and the like.

Description

technical field [0001] The invention relates to a high-toughness flame-retardant phenolic prepreg composite material and its preparation method and application. Background technique [0002] Phenolic / glass fiber and phenolic / carbon fiber prepreg composite materials have good process performance, excellent flame retardancy and outstanding cost performance, and have been widely used in aerospace, transportation and electrical insulation fields, especially in improving aircraft , ships and electronic appliances and other products have played an important role in the fire safety. For example, Cytec's Cycom 2265 and Cycom 2290 phenolic prepreg composite materials have become the main materials for manufacturing interior structural components such as Airbus and Boeing aircraft ceilings, trunks, and wall panels. 3240 epoxy phenolic glass cloth prepreg Composite materials are the main choice for the preparation of F-class insulation laminates in the world. [0003] The unique high...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L13/00C08L29/14C08K3/22C08K7/00C08K7/14C08K7/06C08K3/04C08K5/136C08J5/04C08G8/04
Inventor 左小彪王伟李杰余瑞莲王筠牛光明冯志海
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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