WebJan 01, 2007· Atomic Energy Organization of Iran Mohammad Agha Bolorizadeh Graduate University of Advanced Technology Abstract and …
contactWebMade available by U.S. Department of Energy Office of Scientific and Technical Information ...
contactWebSome electrical properties of the blends such as surface and volume resistance, breakdown voltage, permittivity and loss factor were studied as a function of the EVA content and …
contactWebenergy electron beam up to 170 kGy of irradiation dose. Around the 170 kGy radiation dose, which is an optimum dose for the best cross-linking of the EVA/LDPE blends
contactWebNUKLEONIKA 2007, 52(2):77-81. ELECTRICAL PROPERTIES OF EVA/LDPE BLENDS IRRADIATED BY HIGH ENERGY ELECTRON BEAM Mahmood Borhani 1, Ghazanfar …
contactWebElectrical properties of EVA/LDPE blends irradiated by high energy electron beam Autorzy: Borhani, ... Bhowmick AK (2001) Development of new thermoplastic elastomers …
contactWebJul 30, 2018· HDPE (crystallinity70%), LDPE (crystallinity 40%) samples from Buna AG Merseburg, Germany, are used for irradiation with 8MeV electron beam at a dose of …
contactWebpolymers exposed to high energy radiation undergo vari-ous structural changes. Radiation produced by an electron beam accelerator can be utilized in order to modify the polymer …
contactWebCross-linking of the polyethylene was performed with a high-energy electron beam. Electron paramagnetic resonance spectroscopy was used to study the lifetime of …
contactWebJul 15, 2010· The University of California, Los Angeles (UCLA) is utilizing renewable electricity to power direct liquid fuel production in genetically engineered Ralstonia …
contactWebApr 01, 2000· Low density polyethylene (LDPE) can be radiation crosslinked without any addition of special additives or crosslinking agents. However this polymer requires high irradiation dose in the range of 150–300 kGy for adequate degree of crosslinking (Spenadel, 1979).
contactWebthe effects of low, medium and high energy radiation on mechanical, electrical and thermal properties of EVA/LDPE blends [5, 16, 20, 22]. Nevertheless, studies of the effect of high energy electron beam on electrical properties of the blended EVA/LDPE samples have received less attention. In a previous work [31], we reported the effect of
contactWebApr 01, 2000· Among the effects is that high energy irradiation causes crosslinking and degradation in polymers. ... ... As a result of crosslinking, the tensile strength, elasticity, and modulus increase...
contactWebJul 30, 2018· HDPE (crystallinity70%), LDPE (crystallinity 40%) samples from Buna AG Merseburg, Germany, are used for irradiation with 8MeV electron beam at a dose of 100 KGy in the as received sate. For DSC measurement the samples are cut into suitable sizes so that the weights of the samples remain in between 15 to 20 mg as specified for DSC.
contactWebMade available by U.S. Department of Energy Office of Scientific and Technical Information ...
contactWebApr 15, 2004· A series of low-density polyethylene (LDPE) blends with different amounts of ethylene–vinyl–acetate (EVA) was prepared and irradiated with 10 MeV electron beam in the range of 0–250 kGy at...
contactWeb23. Mateev M, Kargeorgiev S (1998) The effect of electron beam irradiation and content of EVA upon the gelElectrical properties of EVA/LDPE blends irradiated by high energy electron beam 81 forming processes in LDPE-EVA films. Radiat Phys Chem 51:205−206 24. Oda E (1981) Wire and cable. Radiat Phys Chem 18:241−252 25.
contactWebJan 01, 2012· In this research we report and investigate the effect of 10 MeV high energy electron beam irradiation and percentage of initial crystallinity on changes of thermal properties of LDPE fabricated in Iran and so on blend of polyethylene and ethylene vinyl acetate (LDPE/EVA). 2. Experimental method 2.1. Materials
contactWebJul 02, 2015· LDPE is created by free radical polymerization. The high degree of branches with long chains gives molten LDPE unique and desirable flow properties. High density polyethylene (HDPE) is defined by a density of greater or equal to 0.941 g/cm 3. HDPE has a low degree of branching and thus stronger intermolecular forces and tensile strength.
contactWebpolymers exposed to high energy radiation undergo vari-ous structural changes. Radiation produced by an electron beam accelerator can be utilized in order to modify the polymer such as polyethylene blends before or after the processing components [5] whereas post irradiation effects after the processing of components can change polymer
contactWebCharacterization of Gamma Irradiated PP/LDPE Blend. Defect and Diffusion Forum, 2014. Sonia Faldini. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper.
contactWebMar 23, 2012· The tighter network in the LDPE accounts for the high tensile strengths of irradiated LDPE due to the restricted movement of the molecular chains . Consequently, the tensile strength values of LDPE increased after irradiation. ... (2007) Electrical properties of EVA/LDPE blends irradiated by high energy electron-beam. J …
contactWebCross-linking of the polyethylene was performed with a high-energy electron beam. Electron paramagnetic resonance spectroscopy was used to study the lifetime of unpaired electron in the irradiated samples. Time-dependent electrical parameters are investigated for the cross-linked low-density polyethylene. Both dielectric constant and dielectric …
contactWebAug 01, 2012· @article{Murray2012TheEO, title={The effects of high energy electron beam irradiation on the thermal and structural properties of low density polyethylene}, author={Kieran A. Murray and James E. Kennedy and Brian McEvoy and Olivier Vrain and Damien Ryan and Clement L. Higginbotham}, journal={Radiation Physics and …
contactWebApr 23, 2018· In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) on the mechanical and dielectric properties of low‐density polyethylene (LDPE) were investigated. LDPE/PP film blends were prepared by hot press technique.
contactWebMay 01, 2010· Gamma irradiation effect over the properties of slow cooled and fast cooled HDPE/LDPE 10/90 blend was studied. The blend and the neat polyethylenes we…
contactWebMade available by U.S. Department of Energy Office of Scientific and Technical Information ...
contactWebApr 23, 2018· ABSTRACT In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) ... X‐ray irradiated LDPE/PP blends with high mechanical and dielectric performance.
contactWeb23. Mateev M, Kargeorgiev S (1998) The effect of electron beam irradiation and content of EVA upon the gelElectrical properties of EVA/LDPE blends irradiated by high energy electron beam 81 forming processes in LDPE-EVA films. Radiat Phys Chem 51:205−206 24. Oda E (1981) Wire and cable. Radiat Phys Chem 18:241−252 25.
contactWebJan 01, 2012· In this research we report and investigate the effect of 10 MeV high energy electron beam irradiation and percentage of initial crystallinity on changes of thermal properties of LDPE fabricated in Iran and so on blend of polyethylene and ethylene vinyl acetate (LDPE/EVA). 2. Experimental method 2.1. Materials
contactWebJul 02, 2015· LDPE is created by free radical polymerization. The high degree of branches with long chains gives molten LDPE unique and desirable flow properties. High density polyethylene (HDPE) is defined by a density of greater or equal to 0.941 g/cm 3. HDPE has a low degree of branching and thus stronger intermolecular forces and tensile strength.
contactWebpolymers exposed to high energy radiation undergo vari-ous structural changes. Radiation produced by an electron beam accelerator can be utilized in order to modify the polymer such as polyethylene blends before or after the processing components [5] whereas post irradiation effects after the processing of components can change polymer
contactWebCharacterization of Gamma Irradiated PP/LDPE Blend. Defect and Diffusion Forum, 2014. Sonia Faldini. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper.
contactWebJan 20, 2018· The foam structure of LDPE/EPDM blends was obtained by melt extrusion process, using a special single screw for foaming with 1.5 wt% of foaming agent as blowing agent. The foam samples were irradiated by electron-beam at radiation dose of 25, 50, 75 and 100 kGy and submitted to heating in an oven at 100 °C.
contactWebCross-linking of the polyethylene was performed with a high-energy electron beam. Electron paramagnetic resonance spectroscopy was used to study the lifetime of unpaired electron in the irradiated samples. Time-dependent electrical parameters are investigated for the cross-linked low-density polyethylene. Both dielectric constant and dielectric …
contactWebAug 01, 2012· High-energy C+ ion-irradiated low-density polyethylene (LDPE): Spectroscopic and morphological investigation S. V. Kumar, B. Ghadei, J.B.M. Krishna, S. Bhattacharya, A. Saha Materials Science, Physics 2009 10 Long-term oxidative degradation in polyethylene irradiated with ion beams
contactWebJul 30, 2008· Low density polyethylene (LDPE) and its blends with styrene butadiene rubber and ethylene propylene diene monomer were cured, using electron beam irradiation as well as dicumyl peroxide (DCP). The effect of blending was found to change the melt viscosity when compared with the virgin LDPE.
contactWebJ Radioanal Nucl Chem (2013) 295:1313–1319 DOI 10.1007/s10967-012-2163-6 The effect of gamma irradiation on mechanical, and thermal properties of recycling polyethylene terephthalate and low density polyethylene (R-PET/LDPE) blend compatibilized by ethylene vinyl acetate (EVA) K. Abdel Tawab • Sayeda M. Ibrahim M. M. Magida
contactWebApr 23, 2018· In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) on the mechanical and dielectric properties of low‐density polyethylene (LDPE) were investigated. LDPE/PP film blends were prepared by hot press technique.
contactWebApr 23, 2018· ABSTRACT In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) ... X‐ray irradiated LDPE/PP blends with high mechanical and dielectric performance.
contactWebMay 01, 2010· Gamma irradiation effect over the properties of slow cooled and fast cooled HDPE/LDPE 10/90 blend was studied. The blend and the neat polyethylenes we…
contactWebMade available by U.S. Department of Energy Office of Scientific and Technical Information ...
contactWebSome electrical properties of the blends such as surface and volume resistance, breakdown voltage, permittivity and loss factor were studied as a function of the EVA content and the radiation dose. It was revealed that the surface resistance and volume resistivity of the blends reach a maximum at a 170 kGy dose of radiation and 30 wt% of EVA.
contactWebpolymers exposed to high energy radiation undergo vari-ous structural changes. Radiation produced by an electron beam accelerator can be utilized in order to modify the polymer such as polyethylene blends before or after the processing components [5] whereas post irradiation effects after the processing of components can change polymer
contactWebSep 23, 2014· Blown film converters may blend anywhere from 10% to 50% LDPE with an octene LLDPE for sealant webs of lamination films used commonly for food and specialty packaging. Monolayer films of …
contactWebApr 01, 2005· Most often, that irradiation is performed on a toll basis by contract service providers. Now there’s a new wrinkle: A contract radiation processor is selling its own brand of radiation-modified PE pellets. ... A new study shows how the type and amount of LDPE in blends with LLDPE affect the processing and strength/toughness properties of ...
contactWebMar 05, 2014· This work was proposed to fabricate the modified polypropylene by irradiation and analyze the effect of co-agent and polyethylene (PE) on the physical properties of modified PP. Blends of …
contactWebMay 25, 2007· It can be seen that the gel percentage of LDPE or LDPE/EVA blends increases greatly by increasing the EB-irradiation dose up to 50 kGy and then continue to increase up to 100 kGy. Also, at any irradiation dose, the gel percentage was found to increase with increasing the foaming agent content.
contactWebMar 23, 2012· The enhancement in the heat deformation, hardness, and thermal aging properties of LDPE upon EB irradiation, suggests that irradiated LDPE is more thermally and mechanically stable than virgin LDPE. Introduction Low-density polyethylene (LDPE) has the largest annual production in the world today.
contactWebCross-linking of the polyethylene was performed with a high-energy electron beam. Electron paramagnetic resonance spectroscopy was used to study the lifetime of unpaired electron in the irradiated samples. Time-dependent electrical parameters are investigated for the cross-linked low-density polyethylene. Both dielectric constant and dielectric …
contactWebJul 30, 2008· Low density polyethylene (LDPE) and its blends with styrene butadiene rubber and ethylene propylene diene monomer were cured, using electron beam irradiation as well as dicumyl peroxide (DCP). The effect of blending was found to change the melt viscosity when compared with the virgin LDPE.
contactWebAug 01, 2012· High-energy C+ ion-irradiated low-density polyethylene (LDPE): Spectroscopic and morphological investigation S. V. Kumar, B. Ghadei, J.B.M. Krishna, S. Bhattacharya, A. Saha Materials Science, Physics 2009 10 Long-term oxidative degradation in polyethylene irradiated with ion beams
contact