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  • دکتری (1396)

    مهندسی پلیمر

    تربیت مدرس، Tehran، Iran

  • دکتری (1386)

    مهندسی پلیمر

    دانشگاه تربیت مدرس، تهران، ایران

  • انتقال انرژی در سامانه های پلیمری نانوکامپوزیت ها و نانوساختارهای پلیمری
  • تخریب و پایداری سامانه های پلیمری کاربرد مواد تغییر فازی در حفاظت حرارتی

    دکتر احمدرضا بهرامیان  متولد 1354 ه- ش  کارشناسی مهندسی شیمی- پلیمر، دانشگاه صنعتی اصفهان، ایران، 1376  کارشناسی ارشد مهندسی پلیمر، دانشگاه تربیت مدرس، ایران، 1379  دکتری مهندسی پلیمر، دانشگاه تربیت مدرس، ایران، 1386  عنوان‌ رساله‌ دکتری‌ - ارزیابی و تحلیل پارامترهای موثر بر فداشوندگی نانوکامپوزیت بر پایه پلیمر گرماسخت وخاک رس Evaluation Analysis of the Effective Parameters on Ablation of Nanocomposite Based on Thermoset Polymer Clay  زمینه‌های‌ تحقیقاتی: - سپرها و عایق¬های حرارتی بر پایه کامپوزیت¬ها و نانوکامپوزیت¬های پلیمری - اسلوب تخریب حرارتی پلیمرها - مدل¬سازی انتقال حرارت در سامانه های پلیمری - نانوساختارهای پلیمریکربنی

    ارتباط

    رزومه

    Synthesis and characterization of paraffin wax nanocapsules with polyurethane shell (PU/PW); the droplet size distribution: A key factor for thermal performance

    Golnoosh Abdeali, Mahdi Abdollahi, Ahmad Reza Bahramian
    Journal PapersRenewable Energy , Volume 163 , 2021 January , {Pages 720-731 }

    Abstract

    Quasi-static perforation of the ceramic foam core sandwich panels impregnated with Newtonian and non-Newtonian fluids

    Ali Afrouzian, Salman Pouryazdian, GolamHossein Liaghat, AhmadReza Bahramian
    Journal PapersarXiv preprint arXiv:2103.06952 , 2021 March 11, {Pages }

    Abstract

    In this research, Mechanical response and energy absorption of ceramic foam sandwich panels filled with Newtonian and non-Newtonian fluid subjected to quasi-static indentation loads were investigated experimentally. In addition, the effects of number of face-sheet layers (face-sheet thickness) and boundary conditions on the mechanical response and energy absorption of sandwich panels were discussed. Sandwich panels consisted of two glass/epoxy face-sheets with different thicknesses (4 and 8 layers) and an open cell ceramic foam core. This foam saturated with Newtonian (Glycerol) and non-Newtonian (mixture of Ethylene glycol and Aerosil) fluids. Sandwich panels were tested in two different kinds of supporting conditions, simply-supported and

    On the kinetic theory of fracture based on thermomechanical properties for fatigue life prediction of filament wound carbon fiber/epoxy composite cylindrical shell

    Hediyeh Nikpourian, Ahmad Reza Bahramian, Morteza Molaee
    Journal PapersPolymer Composites , 2021 January , {Pages }

    Abstract

    This work presents a model of kinetic theory of fracture for predicting the fatigue life of carbon fiber/epoxy composite ring from a combination of thermogravimetric analyses and Fourier transform infrared spectroscopy of mechanical tests under different loading strains and investigates the effect of environmental exposure on the surface morphology, thermal, and fatigue properties of the composite ring. Three kinetic parameters of the model are first calibrated by means of experimental data. Then, the model is capable of predicting the fatigue life of the composite ring under ambient condition. Eventually, the influence of material constant on the fatigue life of the composite ring is studied. The main result of this work is the arrangemen

    Principles of Thermal Degradation and Flammability of Polymers

    Samire Sabagh Ahmad Reza Bahramian
    Journal Papers , 2021 January , {Pages }

    Abstract

    Novolac aerogel thermal diffusion and efficiency enhancement using paraffin wax core/polyurethane shell phase‐change material nanocapsules

    G Abdeali, AR Bahramian
    Journal Papers , , {Pages }

    Abstract

    Applying machine learning for predicting thermal conductivity coefficient of polymeric aerogels

    BV Goodarzi, AR Bahramian
    Journal Papers , , {Pages }

    Abstract

    مروری کوتاه بر کامپوزیت ایروژل‏ های پلیمری رسانای گرما‎

    نظری, بهرامیان, احمد رضا‎
    Journal Papers , , {Pages }

    Abstract

    A Brief Review on Thermal Conductive Polymeric Aerogel Composites

    N Nazari, AR Bahramian
    Journal Papers , , {Pages }

    Abstract

    Structure and crystallinity of expanded graphite-reinforced carbon nanocomposite aerogels and their influence on paraffin fuel gases filtration efficience

    Ahmad Reza Bahramian Mahmoud Qasemifard, Golnoosh Abdeali
    Journal PapersIran J Polym Sci Technol (Persian) , Volume 32 , Issue 5, 2020 February 5, {Pages 428-439 }

    Abstract

    Effect of graphene oxide on morphological and structural properties of graphene reinforced novolac-derived carbon aerogels: A modified Quasi-Percolation Model

    Omid Alizadeh, Hamidreza Madaah Hosseini, Ali Pourjavadi, Ahmad Reza Bahramian
    Journal PapersCeramics International , 2020 January 18, {Pages }

    Abstract

    Graphene reinforced polymer derived carbon (carbon/graphene) aerogels were synthesized by carbonization of novolac/graphene oxide aerogels. Novolac/graphene oxide aerogels were synthesized using solvent-saturated-vapor-atmosphere technique. To this aim, 20 wt% solution of novolac resin with 0, 2, and 5 wt% graphene oxide in 2-propanol were made and were cured in an autoclave. Wet aerogels were dried in air and were carbonized at 800 ?C in nitrogen atmosphere. Eliminating the time-consuming methods of drying like supercritical and freeze drying is one of the advantages of this method of synthesis of organic aerogles. Fourier transform infrared spectroscopy, field emission scanning electron microscopy, X-ray diffraction, nitrogen adsorp

    Improvement in phase-change hybrid nanocomposites material based on polyethylene glycol/epoxy/graphene for thermal protection systems

    Samire Sabagh, Ahmad Reza Bahramian, Majid Haghir Madadi
    Journal PapersIranian Polymer Journal , Volume 29 , Issue 2, 2020 January , {Pages 161-169 }

    Abstract

    Polyethylene glycol (PEG) is established as an organic solid–liquid phase-change material (PCM) offering a wide range of enthalpies and phase transition temperatures as a function of its molecular weight. PCMs are known for their high-energy absorbance; however, they also have two main drawbacks of leakage and enthalpy reduction during melting. In this work, polyethylene glycol as a phase-change material and graphene oxide (GO), expanded graphene (EG), and epoxy resin (EP) as shape stabilizing materials were used and designed based on experimental design—Taguchi method to find the composition with the least molten PEG leakage and the highest enthalpy of melting. Based on improvements made on main drawbacks, two samples were introduced,

    Review on Nanostructure Supporting Material Strategies in Shape-stabilized Phase Change Materials

    Golnoosh Abdeali, Ahmad Reza Bahramian, Mahdi Abdollahi
    Journal Papers , Volume 29 , 2020 June 1, {Pages 101299 }

    Abstract

    Energy Consumption and take advantage of renewable sources become a major concern in last two decades and is being addressed by various researchers to overcome energy challenges. Phase change materials are widely utilized in thermal energy storage systems to resolve energy crises. On the other hand, tendency to phase change materials has many limitations such as liquid leakage during phase transition procedure, low thermal conductivity and low surface area, which affect phase change material thermal performance. Shape stabilization with regard to nano structures is an efficient approach to reduce phase change leakage, improve physical characteristics and thermal performance due to high capillary tension and specific surface area. Shape stab

    Scale variation enhancement on heat transfer performance of cubic-like polymeric aerogel: With regard to structural parameters

    Golnoosh Abdeali, Ahmad Reza Bahramian, Mahdi Abdollahi
    Journal PapersNumerical Heat Transfer, Part A: Applications , 2020 January , {Pages }

    Abstract

    This article aims to analyze heat transfer behavior based on morphological investigation of polymeric novolac aerogel insulation material. In other words, a nano-scale cubic-like structural model was proposed in consideration of novolac aerogel homogeneity only by using FESEM image in order to review scale effect on heat transfer and also structure related variables. The results show that aerogel colloids scale variation from micro to nano has remarkable influence on microstructure properties such as porosity, density, wall thickness, effective thermal conductivity the same as heat transfer performance. Results validation with experimental data turned out to be in acceptable resemblance that introduces structural model as decent and accurat

    A Comprehensive Review on Carbon-Based Polymer Nanocomposite Foams as Electromagnetic Interference Shields and Piezoresistive Sensors

    Mahyar Panahi-Sarmad, Mina Noroozi, Mahbod Abrisham, Siroos Eghbalinia, Fatemeh Teimoury, Ahmad Reza Bahramian, Parham Dehghan, Mahdi Sadri, Vahabodin Goodarzi
    Journal Papers , Volume 2 , Issue 8, 2020 August 6, {Pages 2318-2350 }

    Abstract

    Polymer-based nanocomposite foams containing carbonic fillers have greatly facilitated scientific research efforts in electromagnetic interference (EMI) shielding, as well as piezoresistive sensing devices. The carbon-based fillers not only provide superior EMI shielding properties and extraordinary gauge factor but also offer critical advantages of electromagnetic wave absorption and supreme pressure sensitivity. Currently, electromagnetic signal interference has become a severe challenge for which wireless communication is responsible. Furthermore, considering the rapid development of the flexible electronics industry, demands for piezoresistive sensors comprising a wide range of responses and increased sensitivity are considerably increa

    Thermo-physical properties of multilayer super insulation: The role of aerogel blanket

    Hediyeh Nikpourian, Ahmad Reza Bahramian
    Journal PapersThermal Science and Engineering Progress , Volume 20 , 2020 December 1, {Pages 100751 }

    Abstract

    In this study, a high-performance multilayer super insulation with improved thermal characteristics was manufactured by novolac aerogel/polyester mat as a spacer layer. The novolac aerogel blankets were prepared through the sol–gel polymerization method under vapor of solvent-saturated atmosphere in the presence of the polyester mat. The effect of novolac resin concentration in the initial sol and the layer density on the thermal performance of the novolac aerogels and the multilayer insulations (MLIs) with and without aerogel blankets were studied in details from morphological and thermo-physical points of view. The results indicated that the MLI with 12 aerogel blanket spacer layers, each spacer layer of which had a density of 0.173?g/c

    Eco-friendly and Smart Polymer Systems

    Hamid Mirzadeh, Ali Asghar Katbab
    Journal Papers , 2020 May 29, {Pages }

    Abstract

    This proceedings book presents the main findings of the 13th International Seminar on Polymer Science and Technology (ISPST 2018), which was held at Amirkabir University of Technology, Tehran, on November 10–22, 2018. This forum was the culmination of more than three decades of academic and industrial activities of Iranian scholars and professionals, and the participation of many notable international scientists, in covering various important polymer-related subjects of concern to Iran and the world at large, including polymer synthesis, processing and properties, as well as issues concerning polymer degradation, stability, and environmental aspects. For the past half a century, the growing concern for advancing human health, quality of l

    Synthesis of Paraffin Wax Phase Change Material Nanoencapsulated by Polyurethane via Interfacial Polymerization

    Mahdi Abdollahi
    Journal PapersEco-friendly and Smart Polymer Systems , 2020 May 29, {Pages 197 }

    Abstract

    This work deals with the synthesis and physico-chemical characterization of nanoencapsulated paraffin wax with polyurethane (PU) via interfacial polymerization method. In synthesized nanocapsules, the paraffin wax has a function of phase change material, while PU acts as a shell material. The nanoencapsulated PCMs were characterized chemically and morphologically by using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The results of morphological study showed that the particle size distribution of the nanocapsules were 80–400 nm by digimizer analysis.

    Enhancement of Novolac aerogel nanostructure and cellulose cork on thermal performance and ablation properties of lightweight heat shields: with regard to omission of thermal …

    G Abdeali, F Samani, H Hadizadeh-Raiesi, AR Bahramian
    Journal Papers , , {Pages }

    Abstract

    Network-gel strength relationship and performance improvement of polyacrylamide hydrogel using nano-silica; with regards to application in oil wells conditions

    Camellia Zareie, Ahmad Reza Bahramian, Mohsen Vafaie Sefti, Mahsa Baghban Salehi
    Journal PapersJournal of Molecular Liquids , 2019 January 18, {Pages }

    Abstract

    Today, hydrogel plugs as a new and effective technology are widely used for temporary oil and gas well plugging. Although, the strength and fluidity of the hydrogels in the oil wells conditions are still most important challenges in their applications in workover operation. In this study, silica nanoparticles were used to improve the network characteristics and strength of hydrogels in addition to reduce the viscosity. It was found that network parameter can be introduced as an effective method for finding the optimum concentration of silica nanoparticles; by application of this method, rheology study is not necessary. The bottle and rheological tests were used to determine the hydrogel strength in desired oil well conditions (high temperat

    Nanostructure of Aerogels and their applications in thermal energy insulation

    Mina Noroozi, Mahyar Panahi-Sarmad, Mahbod Abrisham, Arian Amirkiai, Narges Asghari, Hooman Golbaten-Mofrad, Navid Karimpour-Motlagh, Vahabodin Goodarzi, Ahmad Reza Bahramian, Beniamin Zahiri
    Journal PapersACS Applied Energy Materials , 2019 July 16, {Pages }

    Abstract

    The recently global energetic context is recognized by a requirement to reduce our energy consumption, to prolong the fossil fuel shortage, and to decelerate greenhouse gas transpiration. In order to reduce energy consumption, using insulator and decrease its thermal conductivity recognized as the most effective way over the last few years. Aerogels as super insulating materials permit reducing the heat exchange between two environments while producing via the facile sol-gel and divers drying routes. Aerogels have intrigued scientists and engineers due to their unique nano characteristics, such as low density, fine internal void spaces and open-pore geometry, which originate from sol particles 3D random network. Noteworthy, aerogel-based ma

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    دروس نیمسال جاری

    • دكتري
      مباحث ويژه در نانو كامپوزيت ها ( واحد)
      دانشکده مهندسی شیمی، گروه نانو مواد
    • دكتري
      پديده هاي انتقال در سامانه هاي پليمري ( واحد)
    • كارشناسي ارشد
      فناوري پليمرها و كامپوزينها در سازه ها(II) ( واحد)
    • كارشناسي ارشد
      آزمايشگاه فناوري پليمرها و كامپوزينها در سازه ها(II) ( واحد)

    دروس نیمسال قبل

    • كارشناسي ارشد
      روش هاي محاسباتي در سامانه هاي پليمري ( واحد)
      دانشکده مهندسی شیمی، گروه مهندسي پليمر
    • 1399
      مقامي, فرنوش
      اثر ميكروكپسول هاي مواد تغييرفازي با پوسته ي كربني هادي گرما بر كارايي جذب انرژي حرارتي سامانه ي فيلم انعطاف پذير سيليكون
    • 1400
      صابري, ساحل
    • 1400
      طالبي قلجلو, الناز
    • 1396
      چايچي, مژگان
      پيش بيني و سنتز ايروژل فنوليك با ساختار گرادياني به منظور كاهش نفوذ انرژي حرارتي
    • 1397
      احمدي, ليلاسادات
    • 1397
      مهدويان, فائزه
    • مدیر گروه مهندسی پلیمر
    • معاون پژوهشی دانشکده مهندسی شیمی
    • دبیر کمیته هیات جذب دانشکده مهندسی شیمی
    • اخذ رتبه سوم در جشنواره شهید رجایی (پژوهش هایی نووین در صنایع هوافضا)
    • استاد نمونه دانشگاه در سال 1399
    • انتخاب رساله برتر دکتری در دانشگاه تربیت مدرس، 1386

    مهم

    جدید

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