A series of imidazole (MI) blocked 2,4-toluene diisocyanate (TDI) with polyethylene glycol (PEG-400) as soft segment (PEG-MI- b -TDI) were synthesized for toughening and curing the bisphenol A type epoxy resin (E-44). Fourier transform infrared (FTIR) spectrum indicates that the NCO ...
不同于甲醇,如果将DGF/MBCA在一系列其他有机溶剂和酸性或碱性水环境中浸泡1周,仍能稳定存在,证实了其具有良好的稳定性(Fig. 2G,H)。 Fig. 2. Investigation of the methanolysis behavior of synthesized epoxy resin materials, and c...
These FTIR data strongly supported the successful incorporation and stable chemical structure of the imide and epoxy groups in the NPMF-4 membrane. The FTIR spectrum of the polyimide-modified epoxy resin was analyzed before and after modification to confirm the structural changes. After modification,...
Based on the results, it can be concluded that the amount of catalyst does not accelerate the reaction, but its concentration affects the initiation of the chain reaction in the deeper regions of the resin layer. This phenomenon was not observed during photo-DSC and FTIR tests as the ...
epoxy resin [ə′päk·sē ′rez·ən] (organic chemistry) A polyether resin formed originally by the polymerization of bisphenol A and epichlorohydrin, having high strength, and low shrinkage during curing; used as a coating, adhesive, casting, or foam. ...
The FTIR spectra of VFD and raw materials were presented in Fig. 1. In the FTIR spectrum of VFD, the absorption peaks at 3171 cm−1 and 2835 cm−1 belonged to the stretching vibration of OH and –OCH3 [15] derived from VN, while the disappearance of typical absorption peak of -...
Here, core–shell impact modifier particles (CSIMPs) and multiwalled carbon nanotubes (MWCNs) were used as reinforcing agents for improving the toughness and tensile properties of epoxy resin. For this purpose, emulsion polymerization technique was exploited to fabricate poly(butyl acrylate-allyl metha...
FTIR, Fourier transform infrared. A full color version of this figure is available at Polymer Journal online. nanostructures.19 When the balance between the miscibility of each block segment in the BCP and the epoxy/curing agent blend is adequate, nanostructures composed of the cured epoxy resin/...
A novel phosphorus-siloxane containing liquid flame retardant epoxy resin was synthesized and incorporated into an epoxy amine network, maintaining low viscosity and rapid cure characteristics, good mechanical and thermal properties, and affording excellent flame retardancy at low concentration. The synthesize...
The chemical structure of BICP was characterized by FTIR, 1H and 31P NMR spectra, and high-resolution mass spectroscopy (HR-MS). As shown by FTIR spectrum in Fig. 1, the absorption peak at 3064 cm−1 was assigned to the vibration of benzene skeleton and Ph-H [22]; the absorption ...