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The content distribution of chemical groups and the kinetics of curing process in the micro‐region interfaces of nitrate ester plasticized polyether (NEPE) based propellant/hydroxyl‐terminated polybutadiene (HTPB) based liner were studied by in‐situ diffuse reflection FT‐IR spectroscopy. During the curing process, the content of –NCO groups showed little increase in the liner region toward the interface...
The preparation and properties of high refractive index and high temperature resistant material for LED application were studied. In this paper, vinyl silicone oil and hydrogen silicone oil were synthesized from methylphenylcyclosiloxane, 1, 3-divinyltetramethyldisiloxan, phenyltrimethoxysilane, and so on. And we incorporated a certain amount of TiO2 nanoparticles (NPs) and ZnO nanoparticles (NPs)...
Silicone-cycloaliphatic epoxy resins were successfully synthesized by a two-step reaction route: (i)hydrosilylation of 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS) and 2-epoxy-4-vinyl-cyclohexane,and then blocking of unreacted Si-H with n-butanol, (ii) In order to reduce the viscosity, different amounts of active diluent(Allyl Glycidyl Ether) was added into(i). The molecular structures of the hydrosilylation...
In this paper, the polycarbonate (PC) materials were aged using a monochromatic light source of wavelength 185 nm using a model UV-O3 Clear for a study of light decomposition. The Fourier Transform infrared spectroscopy (FTIR) results showed that intensities of the peak bands corresponding to C=O, C-O, -O-CH- at 1690 cm−1, 1160–1254cm−1, 1050cm−1, decreased with the increase of the aging time, respectively...
Silicone rubber is widely used in electronic packaging materials. Electronic appliances have become miniaturized which need more outstanding packaging materials. Functionalized grapheme/scilicon rubber composites is one of the development to improve the performance of the silicone rubber. Graphite oxide (GO) was modified by KH-550, and then the modified graphite oxide was reduced by hydrazine hydrate...
The effect of different nSi-H/nSi-Vi ratio on the thermal stability, tensile strength and elongation at break of unfilled silicone gel sealants were studied. Two types of fillers were dispersed in the silicone matrix with different content and the composition and mechanical properties of filled composites were studied for establishing a new type of sealants materials. Expandable microspheres improved...
In recent years, modifying anode materials surfaces of Li2MnSiO4 become a popular pursuit. This paper reveals a fast sol-gel process that the Li2MnSiO4 in situ coated with carbon membrane prepared using liquid polyacrylonitrile (LPAN) as the carbon source. The structure and micro-morphology of the as-prepared Li2MnSiO4 and Li2MnSiO4/C nanocomposite were characterized by thermo-gravimetric analysis...
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