نتایج جستجو برای: epoxy polymers
تعداد نتایج: 86014 فیلتر نتایج به سال:
Carbon nanotubes (CNTs) have attracted much attention because of their unique structure and remarkable mechanical, electrical, thermal and chemical properties. In particular, it has been believed that CNTs are ideal fillers for polymers to enhance their mechanical properties. Numerous efforts have been devoted to the application of SWNTs and MWNTs to polymers for the last decade [1]. However, i...
Development of green flame retardants has become a core part the attention material scientists and technologists in paradigm shift from general purpose to specific sustainable products. This work is first report on use coffee biowastes as for epoxy, typical highly flammable polymer. We used spent grounds (SCG) well SCG chemically modified with phosphorus (P-SCG) develop efficient retardant. A c...
Silicone softeners have a firm place in final finishing for a very important reason. A piece of fabric which has been subjected to pretreatment ,dyeing and fixing processes is almost impossible to be appealing to any one without taking a corrective measures of handle. The Application of silicone softeners turns hard and a brittle fabric into a soft pleasant textile with which the buyer can expe...
Abstract Crosslinking thermosets with hyperbranched polymers confers them superior comprehensive performance. However, it still remains a further understanding of polymer crosslinking from the molecular chains to role aggregates. In this study, three polysiloxane structures (HBPSi‐R) are synthesized as model macromolecules, each featuring distinct terminal groups (R denotes amino, epoxy, and vi...
A typical limitation of intelligent devices based on the use of shape-memory polymers as actuators is linked to the widespread use of distributed heating resistors, via Joule effect, as activation method, which involves several relevant issues needing attention, such as: (a) Final device size is importantly increased due to the additional space required for the resistances; (b) the use of resis...
Periodic molecular dynamics simulations are developing to a routine tool for the investigation of complex, polymeric materials. A typical application is simulation curing reaction covalently cross-linked polymers, which provides detailed understanding network formation at scale, with examples including gelation and glass transitions. In this article, we delineate connection between percolation ...
In this study, the surface of epoxy/Al composite is treated using a dielectric barrier discharge (DBD) plasma in presence air. The epoxy was prepared by mixing 0.1g and 0.3 g aluminum powder with resin its hardener ratio 3:1. as layer (DB) studied at an applied frequency 8 kHz three exposure times 0, 2, 4 min. UV degradation process has been UV-Visible spectroscopy, for these polymers. absorban...
Abstract The purpose of this work is to predict the mechanical properties single- few-layered borophene (η-LB)/epoxy composites using molecular dynamics modelling. An epoxy matrix was used hold in layers, and a sheet homogeneously incorporated into generate borophene/epoxy nanocomposites. In work, nanocomposites have been analysed further detail. addition nanocomposites, impacts on density dist...
The properties of thin polymer films are known to be different than the properties of bulk polymers. Both dewetting studies1,2 and temperature-dependent thickness measurements3 showed that thin polystyrene films can exhibit polymer mobility even at temperatures well below that of the bulk-polymer glass transition (Tg). Subsequent work by a wide range of groups has shown that the thermal propert...
Two polymers were prepared from diglycidyl ether of bisphenol A (DGEBA) and triglycidyl p-aminophenol (TGAP) epoxy resins, using the same hardener diethylenetriamine (DETA). The obtained compared in terms structural, optical, mechanical, thermal dielectric properties. Dielectric spectroscopy dynamic mechanical analysis indicated presence dipolar relaxations both polymers, interfacial one only f...
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