phenol diglycidyl ethereal crystalline epoxy resin, having steric hindering groups at bond-neighboring sites of glycidyl ether group and ≥115°C melting point and capable of manifesting a solid form at normal temperatures and a curing agent capable of manifesting a solid form at normal temperatures....
Blend compatibility study by solid-state 13C nuclear magnetic resonance Thus, besides the crystalline phase of HDPE, the blends show two amorphous phases: one rich in the polyolefin and the other rich in the low-molecular-... MIB Tavares,LC Mendes - 《Polymer Testing》 被引量: 30发表: 2000...
Clear and sharp peaks gave way to form amorphous characteristics, when heated above each melting point. These results support the notion that all crystalline peaks corresponded to the T8-silsesquioxane moieties, prior to melting. At room temperature, strong peaks for 3a, 3b and 3c were observed ...
rTdhuerTabgiils- ity occasionally constitutes a major problem for low-melting phosphate glass, this property can be improved by the composition and preparation process. Because this low-melting glass is durable against thermal and strong light conditions, it is considered as a novel colourless solid...
Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites 研究点推荐 ZnO-Sb2O3-P2O5 ZnO-Sb"2O"3-P"2O"5 ZnO-Sb"2O"3-P"2O"5 system low-melting glasses ...
Why do most polymers have low melting points? They have relatively low melting and boiling pointsbecause there are weak (intermolecular) forces that act between the molecules. It is these weak forces and not the strong covalent bonds that are broken when the substance melts or boils. ...
time of the work by discharging the remaining material in a fully molten state, in the case of using a low melting point metal alloy showing a thixotropy characteristic in the solid-liquid coexisting zone as a forming material and melting the alloy into a semi-solid and injection-forming it....
In situ video of melting of ZIF-62 crystals at high pressure and temperature, with speed-up factor of ×8. About this article Cite this article Widmer, R.N., Lampronti, G.I., Anzellini, S.et al.Pressure promoted low-temperature melting of metal–organic frameworks.Nat. Mater.18, 370...
The copolyesters were characterized by FTIR, solid state 13C NMR, DSC, TGA, polarized optical microscopy, X-ray diffraction, and rheometry measurements. With addition of BPA, the resulting copolyester's melting temperature decreased from 260 to 221°C and its glass transition temperature increased ...
The product (464.2 g) may be a highly crystalline white solid. The melting point may be 346-348° C., as determined by differential scanning calorimetry (“DSC”). Synthesis of N1,N4-diphenylisoterephthanalide Compound B The synthesis of Compound B from isophthaloyl chloride and aniline ...