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Flame retardant epoxy prepreg composite material and its preparing method and its use

A technology of composite materials and prepregs, which is applied in transportation and packaging, aircraft floors, hull bulkheads, etc., can solve the problems of poor toughness of composite materials, poor laying process, and large smoke release, so as to improve toughness, physical The effect of performance optimization and excellent mechanical properties

Active Publication Date: 2012-10-17
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

Due to the low heat resistance of E-type epoxy, the flame-retardant composite material based on E-type epoxy has the disadvantages of large smoke release, such as the smoke density of the composite material prepared from F155 prepreg is greater than 200
Although the crystalline epoxy with F-type and polyaromatic ring structure has good heat resistance, it has disadvantages such as high softening point, dry prepreg, poor paving process, and poor toughness of the prepared composite material, such as F46 type epoxy / The compressive strength of the glass fiber composite is lower than 400MPa

Method used

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  • Flame retardant epoxy prepreg composite material and its preparing method and its use
  • Flame retardant epoxy prepreg composite material and its preparing method and its use

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preparation example Construction

[0067] The preparation method of flame retardant epoxy prepreg composite material of the present invention comprises the following steps:

[0068] Step 1, prepare epoxy resin matrix, specifically as follows:

[0069] Add an organic solvent into the reaction kettle, raise the temperature to 40°C to 80°C, and then add F46 epoxy resin, E-type epoxy resin, toughening agent, tetrabromobisphenol A, curing agent, curing accelerator and three Antimony oxide, fully stirred for 30min~60min, then the epoxy resin matrix was prepared;

[0070] Step 2, prepare flame-retardant epoxy composite material, specifically as follows:

[0071] The epoxy resin matrix and fiber reinforced material are prepared by continuous impregnation, drying and winding processes by solution impregnation method; flame retardant epoxy prepreg is prepared according to the thickness of fiber reinforced material and equipment conditions, and the traction force and rubber extrusion roller are adjusted and optimized. P...

Embodiment 1

[0080] Based on the mass parts of F-type epoxy resin, add 10 mass parts of acetone to a 100L reactor, heat up to 40-60°C, and then add 100 mass parts of F46 (epoxy value 0.46), 10 mass parts of E51 (epoxy value 0.51), 13 parts by mass of carboxyl-terminated nitrile rubber, 5 parts by mass of tetrabromobisphenol A, 8 parts by mass of dicyandiamide, 5 parts by mass of N, N'-dimethyldiphenylurea and 1 parts by mass of antimony trioxide and fully stirred for 30 minutes to obtain a flame-retardant epoxy resin composition.

[0081] With the above epoxy resin as the matrix, EW110C type (four pieces of satin, thickness 0.11mm, surface weight 110g / m 2 ) Glass cloth is used as a reinforcing material, and the flame-retardant epoxy / glass fiber prepreg is obtained through continuous impregnation, drying and winding processes by solution impregnation method. Lay a certain number of layers of epoxy / glass fiber prepreg stacks according to the thickness design requirements, and use a press ho...

Embodiment 2

[0083] Based on the mass parts of F-type epoxy resin, in a 100L reactor, add 10 mass parts of acetone, heat up to 40-60 °C, and then add 100 mass parts of F46 epoxy (epoxy value 0.46), 10 mass parts while stirring. Parts by mass of E51 (epoxy value 0.51), 13 parts by mass of carboxyl-terminated nitrile rubber, 5 parts by mass of tetrabromobisphenol A, 8 parts by mass of dicyandiamide, 5 parts by mass of N,N'-dimethyldiphenylurea and 1 mass part of antimony trioxide, fully stirred for 30 minutes to obtain a flame-retardant epoxy resin composition.

[0084] With the above epoxy resin as the matrix, EW250F type (eight pieces of satin, thickness 0.25mm, surface weight 300g / m 2 ) Glass cloth is used as a reinforcing material, and the flame-retardant epoxy / glass fiber prepreg is obtained through continuous impregnation, drying and winding processes by solution impregnation method. Lay a certain number of layers of epoxy / glass fiber prepreg stacks according to the thickness design r...

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Abstract

The present invention relates to a flame retardant epoxy prepreg composite material and its preparation method and its use, the composite material contains 20 to 70% of epoxy resin matrix and 30-80% of fiber reinforced materials; wherein the epoxy resin matrix comprises the following components by mass part: 100 parts of an F type epoxy resin, 10-50 parts of an E type epoxy resin, 5-40 parts of tetrabromobisphenol A, 5-20 parts of a curing agent, 1-10 parts of a curing accelerator, 5-25 parts of a toughening agent, 1-10 parts of antimonous oxide and 20-80 parts of an organic solvent. According to the invention, F46 type epoxy resin containing a rigid frame structure is taken as a main component, the flame retarding and toughening modification are carried out on the resin matrix by a combination technology, the epoxy composite material with high toughness, high flame retardancy and good overlaying manufacturability can be realized, the flue gas density is obviously decreased when the flame is carried out, and the epoxy prepreg composite material possesses important popularization and application prospects in the fields of large aircraft, ships, high-speed rails and the like.

Description

technical field [0001] The invention relates to a flame-retardant epoxy prepreg composite material and its preparation method and application. Background technique [0002] Epoxy / glass fiber and epoxy / carbon fiber composite materials have high specific strength and specific modulus, good manufacturability and relatively low cost. They have been widely used in aerospace, energy transportation and electrical insulation and other fields. It has made important contributions to the multi-selectivity in the field of chemical engineering and engineering and the high reliability of electrical equipment. For example, Hexcel's F155, M26T, M76 and other brands of epoxy / glass fiber and epoxy / carbon fiber composite materials have been widely used in Boeing and Airbus aircraft radomes and floor components; FR-4 epoxy / glass fiber composite materials It has been applied in batches in high-performance electronic laminates; epoxy / glass fiber composite materials such as SynoliteTM1790-G-3 hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/04C08L63/02C08L13/00C08L33/00C08L15/00C08K13/04C08K7/14C08K7/06C08K3/22B29C70/34B29C70/54B64D47/00B64C1/18B63B3/14B63B3/56B63B29/04B61D17/10B61D17/08
CPCY02T50/43Y02T50/433Y02T50/40
Inventor 左小彪王伟冯志海李杰余瑞莲杜宝宪李仲平
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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