نتایج جستجو برای: polypropylene pp

تعداد نتایج: 91529  

Journal: :int. j. lignocellulosic products 2014
a. khozeini t. tabarsa m. mashkour

this study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. the resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. but by increasingof fire retar...

2012
Takao NOMURA Takeyoshi NISHIO Shuichi MAEDA

Heterogeneous textures due to phase separation in molten polypropylene (PP)/ ethylene-propylene-rubber (EPR) blends were investigated in relation to their dynamic viscoelastic properties. As characteristic to heterogeneous liquids, slow relaxation mechanisms due to the existence of such phases were found for dynamic moduli of PP/EPR blends. These moduli were analyzed by using the linear viscoel...

2012
Tongfei Wu Yongzheng Pan Erjia Liu Lin Li

Multiwalled carbon nanotube (MWCNT)/ polypropylene (PP) composite particles with various compositions were prepared by mechanical grinding of PP microparticles and MWCNT powders in a mortar at room temperature. Scanning electron microscopy (SEM) revealed that PP particles were coated by MWCNTs, forming a core-shell structure. The electrical resistivity versus temperature behavior of MWCNT/PP co...

2011
M. A. Suleiman

The influences of short chain branching (SCB) and molecular weight (Mw) of low density polyethylene (LDPE) on its melt miscibility with polypropylene (PP) were investigated by rheological techniques. Rheological measurement and different data-treatment techniques as well as rheological models suggest that blends of PP with LDPE of high SCB (22 CH3/1000 C) are miscible at all compositions. Howev...

Journal: :Food Chemistry 2021

This work focuses on the synthesis of novel tannin-functionalized polypropylene copolymers that are designed to inhibit oxidation vegetable oils for potential use as packaging materials. An empty glass Petri dish (control), a chlorinated polypropylene-coated (control) and series coated dishes overlaid with linseed oil were exposed air additional white light. Oligomerization oxidized was assesse...

Journal: :Expert Syst. Appl. 2009
Serkan Tapkin Abdulkadir Çevik Ün Usar

This study presents an application of artificial neural networks (ANN) for the prediction of repeated creep test results for polypropylene (PP) modified asphalt mixtures. Polypropylene fibers are used to modify the bituminous binder in order to improve the physical and mechanical properties of the resulting asphaltic mixture. Marshall specimens, fabricated with M-03 type polypropylene fibers at...

Journal: :Processes 2021

This study aims to evaluate the effect of functionalized multi-walled carbon nanotubes (MWCNTs) on performance glass fiber (GF)-reinforced polypropylene (PP) for wind turbine blades. Support theoretical blade movement horizontal axis turbines (HAWTs), simulation, and analysis were performed with Ansys computer package gain insight into durability polypropylene-chopped E-glass application in bla...

A. Khozeini M. Mashkour T. Tabarsa

This study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. The resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. But by increasingof fire retar...

Journal: :Macromolecular Reaction Engineering 2022

This work focuses on reactive extrusion to design polypropylene (PP) chains with long and short branching obtain non-linear behavior for the synthesis of low-density foams (<100 kg m?3) using a batch supercritical carbon dioxide (scCO2) foaming process. From maleic anhydride (MA) grafted PP (PP-g-MA), long-branched are performed [MA]/ [OH] reaction (with Sorbitol alcohol). On other hand, branch...

Journal: :SPEJ (Science and Physics Educational Journal) 2022

Abstract: The purpose of this study was to degrade Polypropylene plastic waste into fuel using a pyrolysis system. method used analyze the data from process in is an experimental method, while analysis quantitative analysis, existing calculations polypropylene oil. Data collection techniques through three processes, namely 1 hour, 2 hours, and 3 hours. results processes at different times obtai...

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