نتایج جستجو برای: elongation at break
تعداد نتایج: 3759323 فیلتر نتایج به سال:
The present work investigates the effect of amount carbon black on curing and mechanical properties such as tensile strength, elongation at break, hardness abrasion resistance natural rubber (NR)/ acrylonitrile-butadiene (NBR) blend. For that purpose, a blend composed 65% NR 35% NBR filled with different content N330 was used. results indicate viscosity crosslink density composites increase sco...
A nano/ultra-fine grain Al-0.2wt% Zr alloy was produced by accumulated roll bonding (ARB) processafter 10 cycles. The fraction of high angle grain boundaries increased from 8% to 65.4% during 10passes during ARB process. This alloy was subjected to tensile test at different temperatures (523,573and 623 K) and strain rates (0.1 and 0.01 s-1). The optimum condition of temperature and strain rate ...
Effects of different levels of nitrogen fertilizer and cutting time of forage on grain and forage yield of barley (Hordeum vulgare L.) Karoon cultivar was studied during 1995-1996 at Ramin Agricultural Research and Educational Center, University of Shahid Chamran, Ahwas, by using a split plot design in randomized complete block with 4 replications. Main plots were assigned to five levels of N...
Blend film is a thin layer made of biomaterial. One the ingredients commonly used as blend chitosan. In manufacture films, chitosan can be basic component manufacture. Chitosan has magnificent features due to its biodegradable and biocompatible non-toxicity, but unfortunately fragile material generally insoluble in water. Poly Lactic Acid (PLA) Glycerol was added improve characteristics film. T...
The application of nuclear technology in the health sector is increasing. One example use irradiation production wound dressings. Research activities have been conducted to study whether polyvinyl alcohol (PVA)-gelatin-based hydrogel from white snapper scales can be processed using gamma into A series PVA (10 %) solutions containing gelatin various concentrations (0-4 were treated with three fr...
In the current study, additive manufacturing of nylon by fused deposition modeling is conducted based on statistical analysis. Besides, aim this study influence process parameters, namely layer thickness (0.15 mm-0.35 mm), infill percentage (15-55%), and number contours (2-6) maximum failure load, parts weight, elongation at break, build time. The experiment approach was used to optimize parame...
Composite propellants are often identified by the type of polymeric binder used. The most commonly used polyol in recent time is the Hydroxyl Terminated Polybutadiene (HTPB). In order to evaluate the quality of three types of HTPB prepolymer, their polyurethanes elastomers were synthesized by one shot polymerization and structure-properties relationships of the prepared polyurethane have ...
Polyvinylpyrrolidone/polyaniline emeraldine salt (PVP/PANI) with additives (TiO2, ZnO, NaCl, and Na2SO4) was synthesized via oxidative in situ polymerization. Because of using PVP/PANI as a protective membrane layer and its applications in an electrical device, we investigated the mechanical and rheological properties of PVP/PANI and other composites in orde...
Thermoplastic polyurethane (TPU)/clay nanocomposites were prepared via a melt-compounding method using ester type TPU and two different modified organoclays (Cloisite 30B and Cloisite 15A) in different contents. The Effects of the chemical structure and content of the nanoclays on the thermal degradation and mechanical properties of TPU were also investigated. The effect of structural modificat...
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