Foamed epoxy adhesive film, aramid fiber honeycomb sandwich panel, and preparation method of aramid fiber honeycomb sandwich panel
A technology of aramid honeycomb and epoxy glue, which is applied in the direction of chemical instruments and methods, layered products, weight reduction, etc. It can solve the problems of synchronous curing, low strength of foam materials, and many molding processes, so as to avoid manual investment , The weight can be adjusted to avoid damage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Stir 100 parts of bisphenol A epoxy resin, 10 parts of dicyandiamide, 3 parts of azodicarbonamide, and 50 parts of N, N-dimethylformamide at 80 ° C, vacuum defoaming; Continuous and uniform coating of epoxy resin mixture at 220g / m 2 On the aramid felt (the mass ratio of aramid 1313 fiber to aramid 1414 fiber is 1.5:1); the aramid felt is pulled into the drying tunnel, and after baking at 120°C for 4 hours, a foamed epoxy film is obtained, and the foamed epoxy film is tested. Gram weight of the film. The compressive strength and bending strength of the aramid honeycomb sandwich panel made of aramid honeycomb sandwich panel after being cured for 4 hours under the condition of 180℃ / 0.2MPa are shown in Table 1 (Note: HB7736.2 is used for surface density) -2004 test, compressive strength is tested using GB1447-2005, bending strength is tested using GB1449-2005.).
Embodiment 2
[0041] Stir 100 parts of bisphenol F epoxy resin, 15 parts of 4,4-diaminodiphenyl sulfone, 7 parts of sodium bicarbonate, and 80 parts of N,N-dimethylformamide at 80°C, and vacuum defoam; Continuously and evenly coat the epoxy resin mixture at 330g / m on the film coating machine 2 On the aramid felt (the mass ratio of aramid 1313 fiber to aramid 1414 fiber is 1.2:1); the aramid felt is pulled into the drying tunnel, and after baking at 150°C for 4 hours, a foamed epoxy film is obtained, and the foamed epoxy film is tested. Gram weight of the film. The compressive strength and flexural strength of the aramid honeycomb sandwich panel made of foamed epoxy film after curing for 4 hours at 180°C / 0.2MPa are shown in Table 1.
Embodiment 3
[0043] Stir 100 parts of bisphenol F epoxy resin, 15 parts of 4,4-diaminodiphenylsulfone, 10 parts of n-pentane, and 100 parts of N, N-pyrrolidone at 80 ° C, vacuum defoaming; Continuous and uniform coating of epoxy resin mixture at 330g / m 2 On the aramid felt (the mass ratio of aramid 1313 fiber to aramid 1414 fiber is 1.2:1); the aramid felt is pulled into the drying tunnel, and after baking at 120°C for 4 hours, a foamed epoxy film is obtained, and the foamed epoxy film is tested. film. The compressive strength and flexural strength of the aramid honeycomb sandwich panel made of foamed epoxy film after curing for 4 hours at 180°C / 0.2MPa are shown in Table 1.
PUM
Property | Measurement | Unit |
---|---|---|
flat compressive strength | aaaaa | aaaaa |
flat compressive strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com