The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, organometallic/silica nanocomposite [Au3Pz3]/silicahex with a hexagonal geometry shows heating effect of the one-dimensional columnar assembly confined in the silicate channel on self-repairing capability. Differential scanning calorimetry (DSC) profile of this material displayed a single endothermic peak at 164 oC and 158 oC upon first and second heating-cooling, respectively, which...
Heat treatment is one of the most important processes in production of insulating material. This paper presents space charge behaviors in low density polyethylene (LDPE). The LDPE specimens used for space charge experiments were obtained by three different heat treatment processes. These LDPE specimens have different degree of crystallinity and grain sizes. The accumulation and dissipation of space...
When we keep an amorphous polymer at a temperature below its glass transition temperature Tg or when we vary the cooling rate of the polymer from its melting temperature to a temperature below Tg, it is not in a true thermodynamical equilibrium state and many of its properties change such as the free volume, the enthalpy and other properties. This behavior is called Physical ageing. In this paper,...
Polycrystalline powder samples of L-asparagine monohydrate a fundamental amino acid has been studied for thermal relaxation using Thermally Stimulated Depolarizing Current (TSDC) in its normal and thermal window variations. Blank zero field TSDC, differential scanning calorimetry and x-ray diffraction studies have been performed to explore the effect of heating and cooling cycle on the sample. From...
Crystallization and inner stresses can influence electrical aging properties of insulating material. Heat treatment is one of the most important processes in production of insulating material. This paper presents the growing properties of electrical trees in low density polyethylene (LDPE). The LDPE specimens used for electrical tree experiments are obtained by four different heat treatment processes...
Electronic package plays an important part in the development of IC industry. As we all known, strip warpage is a critical issue for the MAP-QFN manufacturing, results from the package structure, the thermal mismatch of materials and the manufacturing process. In this paper, a new finite element model was used to predict the warpage of one MAP-QFN block. And in this model, the temperature-dependent...
Hydrogels play a key role in many pharmaceutical and bio-applications. It is therefore advantageous to be able to predict the gelation process so that properties and performance of hydrogels can be optimized for these applications. This study examines the numerical models proposed earlier and modifies them in order to describe more accurately and appropriately the thermally induced gelation and degelation...
Based on Boutron's semi-empirical crystallization theory, a quantitative microscopic imaging method was developed to determine the quantity of ice in thin films of vitrification solutions. A universal equation was obtained for various vitrification solutions. The new method was applied to determine the ice quantity and critical cooling rates for two new vitrification solutions. This new method has...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.