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Heating curing method of epoxy resin system for resin-based composite

A technology of epoxy resin system and composite materials, which is applied in the field of heating and curing of epoxy resin systems for resin-based composite materials. It can solve the problems of affecting production progress, long curing cycle, and single curing method, so as to shorten the manufacturing cycle, The effect of improving the bending strength and speeding up the production schedule

Inactive Publication Date: 2018-02-02
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Listed in Table 1 is an epoxy resin system that can be used in the manufacture of resin-based composite materials. The epoxy resin system is usually cured at room temperature, the curing method is single, and the curing cycle is long (usually 72h), which seriously affects production. schedule
After inquiry, the heating and curing method of the epoxy resin system is not given in various documents and materials, and the material manufacturer cannot give the exact and effective heating and curing method of the epoxy resin system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] During implementation, firstly, prepare various required tools and auxiliary supplies, clean the mold and brush the release agent; secondly, prepare materials, including 850S epoxy resin, 303B curing agent, analytical pure acetone, and cut glass as required fiber fabric. Secondly configure the epoxy resin system, first add 25 parts by weight of 303B curing agent to 100 parts by weight of 850S epoxy resin and stir evenly, then add 10 parts by weight of analytical pure acetone and stir evenly, use the selected The composite material parts are formed by the process, and finally the parts are heated and cured. The parts are firstly left to air in the general workshop for 2h~3h, and then heated and cured in the curing furnace at 50°C for more than 4h, and then cooled to room temperature with the furnace and then demoulded. .

Embodiment 2

[0020] During implementation, firstly, prepare all kinds of required tools and auxiliary supplies, clean the mold and brush the release agent; secondly, prepare materials, including 850S epoxy resin, 303B curing agent, acetone (analytical pure), and as required material fiberglass fabric. Secondly configure the epoxy resin system, first add 25 parts by weight of 303B curing agent to 100 parts by weight of 850S epoxy resin and stir evenly, then add 10 parts by weight of acetone (analytical pure) and stir evenly, use the selected method on the mold The composite material parts are formed by a certain process, and finally the parts are heated and solidified. The parts are firstly left to air in the general workshop for 2h~3h, and then heated and solidified in the curing furnace at 55°C for more than 4h, and then cooled to room temperature with the furnace. demoulding.

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Abstract

The invention belongs to the technical field of aviation manufacturing and relates to a heating curing method of an epoxy resin system for resin-based composite. The epoxy resin system is suitable forthe manufacturing of glass fiber resin-based composite. The heating curing method is suitable for heating curing of the epoxy resin system. The epoxy resin system is only applicable to room temperature curing previously; by providing the heating curing method, richer curing methods are provided for the epoxy resin system. The heating curing method has the advantages that the curing time of the epoxy resin system can be effectively shortened from 72 h to 24 h and below, full curing of the epoxy resin system is guaranteed, and zero implosion occurs during curing.

Description

technical field [0001] The invention belongs to the technical field of aviation manufacturing, and relates to a heating and curing method for an epoxy resin system used in resin-based composite materials. Background technique [0002] Listed in Table 1 is an epoxy resin system that can be used in the manufacture of resin-based composite materials. The epoxy resin system is usually cured at room temperature, the curing method is single, and the curing cycle is long (usually 72h), which seriously affects production. schedule. After inquiry, the heating and curing method of the epoxy resin system is not given in various documents and materials, and the material manufacturer cannot provide the exact and effective heating and curing method of the epoxy resin system. [0003] Table 1 Epoxy resin system formula [0004] System components parts by weight 850S epoxy resin 100 303B curing agent 25 Acetone (analytical pure) 10 Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/40C08G59/20C08L63/00C08K7/14
CPCC08G59/40C08G59/20C08K7/14C08L63/00
Inventor 苏航郭绍华冉安国张东致段正才罗喜东王翀刘庆华张凯华黄智勇王文全王景海刘刚李春刚路敏菲邱航波张海清魏耀华
Owner SHAANXI AIRCRAFT CORPORATION
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