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In this paper, the effects of the degree of cure of an anisotropic conductive film (ACF) on the material properties and the contraction stress build-up of the ACF and ACF joints stability were investigated. The degrees of cure of the ACF as a function of bonding times were quantitatively obtained by a dynamic DSC study and an attenuated total reflectance/Fourier transform infrared (ATR/FT-IR) analysis...
An intercalation nonlinear-optical (NLO) polyimide was synthesized by the ring-opening polyaddition of 4,4'-(Hexafluoroisopropylidene) diphthalic Anhydride (6FDA) and [(6-nitrobenzothiazol-2- yl)diazenyl]phenyl-1,3-diamine. Then, sol-gel technique was adopted, utilizing 3- aminopropyltriethoxysi- lane (APTES) and tetraethoxysilane (TEOS). The polyimide/silica hybrid material was obtained. The polyimide...
A series of the polyimide-silica NLO nanohybrid materials were synthesized from 3,3', 4,4'- Bisphenyltetracarboxylic (BPDA), 2,2-Bis(3-amino-4-hydroxyphen-yl) hexafluoropropane (6FHP), nonlinear optical (NLO) molecule 4-(N-2-Hydroxyethyl-N-methylamino)-4'-[(6-nitroben-zothiazol-2-yl)-diazenyl] azobenzene (HNBDA), coupling agent APTES and hydrolysate of TEOS via sol-gel process. The TEOS contents in...
This work deals with the study of the physical properties of solid dielectric materials intended for the applications of the electrical engineering. In order to improve these properties, it is allowed today that the incorporation of nanoloads in these materials can have a great influence. During their use, these materials are subjected to combined constraints (electric, thermal, mechanical, environmental...
Poly(ethylene:vinyl acetate) (pEVA) and polyether urethane-urea (PEUU) are widely used i.a. as materials for electric cable insulation, hence they contain various fiame-retardants for this purpose. Two flame-retardant filled pEVA samples are compared with PEUU sample without flame-retardant. Thermal effects accompanying the burning of these materials are examined by differential scanning calorimetry...
Thermal properties of PE/SiO2 nanocomposites are investigated in the paper by Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TG) and differential scanning calorimetry (DSC). Effects of surface treatment of nano-SiO2 on thermal properties of composites are discussed in detail. The results of TG reveal that thermal stabilities of nanocomposites are improved with addition...
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