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Flame-retardant epoxy resin suitable for vacuum infusion and preparation method of flame-retardant epoxy resin

A technology of epoxy resin and vacuum infusion, which is applied in the field of flame-retardant composite materials, can solve the problems that the mechanical properties of materials in high-end technical fields cannot be met, the flame retardancy of materials cannot meet the requirements, and the vacuum infusion process cannot be applied. Easy production and implementation, excellent mechanical properties and good flame retardancy

Active Publication Date: 2014-03-12
WELLS ADVANCED MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of flame retardant resins on the market, but all of them have problems such as being unable to apply the vacuum infusion process due to high viscosity, or failing to meet the mechanical performance requirements of materials in high-end technical fields, or failing to meet the requirements of flame retardancy of materials.

Method used

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  • Flame-retardant epoxy resin suitable for vacuum infusion and preparation method of flame-retardant epoxy resin
  • Flame-retardant epoxy resin suitable for vacuum infusion and preparation method of flame-retardant epoxy resin
  • Flame-retardant epoxy resin suitable for vacuum infusion and preparation method of flame-retardant epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Preparation of Agent A: heat 100 parts of bisphenol A resin to 120°C; add 25 parts of brominated epoxy flame retardant and start stirring to fully dissolve the brominated epoxy flame retardant; after stirring for 60 minutes, place and cool to 60°C; Add 6 parts of organophosphorus flame retardant, keep stirring at the same speed for 30 minutes, the stirring speed is 30-90r / min, and the stirring temperature is 60°C; stop heating, add 0.3 parts of defoamer and 1 part of coupling agent, and stir for 30 minutes Minutes; keep stirring, cool the resin to below 40°C; add 6 parts of non-reactive diluent, start vacuum defoaming after stirring for 30 minutes and defoaming for 30 minutes while stirring, stop stirring, and set aside for later use.

[0099] Preparation of agent B: Mix 100 parts of alicyclic amine curing agent and 20 parts of accelerator, mix well, stir for 60 minutes at a stirring speed of 20-50 r / min, and set aside for later use.

[0100] Data test: Weigh 100 parts ...

Embodiment 2

[0102] Preparation of agent A: heat 100 parts of bisphenol A resin to 115-125 ° C; add 25 parts of brominated epoxy flame retardant and start stirring to fully dissolve the brominated epoxy flame retardant, stir for 50-70 minutes, then let it cool to 55-65°C; add 8 parts of organophosphorus flame retardant, keep stirring at the same speed for 20-40 minutes, the stirring speed is 30-90r / min, and the stirring temperature is 55-65°C; stop heating, add defoamer 0.3 1 part and 1 part of coupling agent, stir for 30 minutes; keep stirring, cool the resin to below 40°C; add 6 parts of non-reactive diluent, stir for 30 minutes, start vacuum defoaming and defoaming for 20-40 minutes while stirring , stop stirring, and set aside.

[0103] Preparation of agent B: Mix 95 parts of alicyclic amine curing agent and 20 parts of accelerator, mix well, stir for 50-70 minutes at a stirring speed of 20-50 r / min, and set aside for later use.

[0104] Data test: Weigh 100 parts of component A and 2...

Embodiment 3

[0106] Prepare agent A: Heat 100 parts of bisphenol A resin to 120°C; add 25 parts of brominated epoxy flame retardant and start stirring to fully dissolve the brominated epoxy flame retardant. After stirring for 60 minutes, let it cool to 55-65 ℃; add 10 parts of organophosphorus flame retardant, keep stirring at the same speed for 30 minutes, the stirring speed is 30-90r / min, and the stirring temperature is 55-65℃; stop heating, add 0.3 parts of defoamer and 1 part of coupling agent Keep stirring, cool the resin to below 40°C; add 6 parts of non-reactive diluent, stir for 30 minutes, start vacuum defoaming and defoaming for 30 minutes while stirring, stop stirring, and set aside for later use.

[0107] Preparation of agent B: Mix 100 parts of alicyclic amine curing agent and 20 parts of accelerator, mix well, stir for 60 minutes at a stirring speed of 20-50 r / min, and set aside for later use.

[0108] Data test: Weigh 100 parts of component A and 20 parts of component B, mix...

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Abstract

The invention relates to a flame-retardant epoxy resin suitable for vacuum infusion and a preparation method of the flame-retardant epoxy resin. The flame-retardant epoxy resin suitable for vacuum infusion is prepared from an agent A and an agent B in a mass ratio of 100: 20, wherein the agent A is composed of the following components in parts by mass: 100 parts of bisphenol A resin, 25-40 parts of bromine-containing epoxy flame retardant, 6-12 parts of organic phosphorus flame retardant, 6-12 parts of non-reaction diluent, 0.3-0.6 part of defoaming agent and 1-3 parts of coupling agent; the agent B is composed of the following components in parts by mass: 95-105 parts of alicyclic amine hardener and 20-30 parts of accelerant. The flame-retardant epoxy resin provided by the invention overcomes the defect of the existing flame-retardant epoxy resin, has the advantages of being low in viscosity, good in flame retardance, and excellent in mechanical property, and is suitable for vacuum infusion process, and can be applied to manufacturing flame-retardant composite materials for the top technical field of aviation, aerospace, military industry and the like.

Description

technical field [0001] The invention relates to the field of flame-retardant composite materials, in particular to a flame-retardant epoxy resin suitable for vacuum diversion and a preparation method thereof. Background technique [0002] Vacuum infusion is a lamination process used to produce fiber reinforced plastic (FRP) parts. Lay dry materials (felt, fabric, stitched felt, and foam core) over a male or female mold surface and seal around the perimeter of the part using thin plastic vacuum bags or semi-rigid counter-molds. A vacuum is drawn using a vacuum pump, applying atmospheric pressure, compacting the dry material and creating a "vacuum gap". Then, inject resin into the gap by placing a resin injection tube. The pressure differential between the vacuum gap and the external atmospheric pressure forces the resin in, infusing the porous material until it is completely wetted. Vacuum is maintained throughout until the part cures, ensuring tightness. The vacuum infus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/50C08G59/20C08K5/05C08K5/03C08K5/136C08K5/06C08K5/521C08K5/523
Inventor 邓辉尧金威
Owner WELLS ADVANCED MATERIALS SHANGHAI
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