Benzene epoxy resin of 2 phenolic formaldehyde
2 phenol and formaldehyde are in benzene between a benzene that the condensation below oxalic acid catalysis becomes quality of small opposite element after colophony of 2 phenolic formaldehyde, issue reaction of as chloric as annulus oxygen propane to be made in NaOH action again a benzene 2 phenolic formaldehyde aether of 4 shrink glycerine epoxy resin. Molecular structure style is:
Homebred model is F-76 epoxy resin. Orange yellow is ropy liquid, 130~ of annulus oxygen equivalent
Express 1-22Benzene 2 phenolic formaldehyde aether of 4 shrink glycerine is pouring makings function
Project
MOCA solidify agent
Agent of solidify of 70 acid anhydride
Equestrian fourth heat-resisting / ℃
Dimension blocks softening point / ℃
Flexural strength / Mpa
Pound toughness / (KJ. ㎡)
Reduce intensity / Mpa
Tensile strength / Mpa
Rupture percentage elongation / %
Dielectric loss role is tangential
Al-Al shear strength / Mpa
Room temperature
Be able to bear or endure chemical sex #
65%~68%* nitric acid
95%~98%* nitric acid
36%~38%* nitric acid
50% oxyhydrogen change sodium
265
> 295
114
6.8
226
52
2.5
2.5