Evaluation of Additive and Filler Effects on Water-based Traffic Nanocomposite Coatings
shahla
Pazokifard
Color, Resin and Surface Coatings Department, Iran Polymer and Petrochemical Institute, Tehran
author
mojtaba
mirabedini
Color, Resin and Surface Coatings Department, Iran Polymer and Petrochemical Institute, Tehran
author
manouchehr
khorasani
Color and Polymer research center, Amirkabir University of Technology, Tehran
author
roya
Hasheminasab
Color, Resin and Surface Coatings Department, Iran Polymer and Petrochemical Institute, Tehran
author
text
article
2014
per
In this study, the effect of variation in ingredients on the performance characteristics of an acrylic waterbased traffic paint i.e. no pick-up time, viscosity and wear resistance was investigated. Various coatings formulations were prepared using various amounts of two grade of calcium carbonate (5.5 and 2.6 um in average particle size), silica nanoparticles and different additives (amine dispersing agents and thickeners). No pick-up time, solvent and wear resistance was evaluated based on ASTM D 711, ASTM D 471 and ASTM D 4060, respectively. Viscosity was determined using Brookfield viscometer and luminescence factor through Shade Reflectometer using 45/0° geometry The results implied that using amine compound additives (amine dispersing agents and thickeners), different amounts of calcium carbonates (2.6:5.5 um = 75:25 wt. %) along with silica nanoparticles (1 wt. % coatings formulation) leads to reduce no pick-up time down to 25 minutes with applicable viscosity (2300 CP), luminescence factor (over 80%) and acceptable solvent and wear resistance in the water base traffic coatings
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
445
454
https://amnc.aut.ac.ir/article_75182_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.1
Fabrication of Coaxial Electrospun Phase Change Cellulose Acetate/ Polyethylene Glycol Nanofibers toward Thermal Energy Storage
babak
rezaei
Faculty of Textile Engineering Amirkabir University of Technology, Tehran
author
ahmad
mousavi shoushtari
Faculty of Textile Engineering Amirkabir University of Technology, Tehran
author
reza
Mahammad Ali Malek
Faculty of Textile Engineering Amirkabir University of Technology, Tehran
author
mohsen
askari
Faculty of Textile Engineering Amirkabir University of Technology, Tehran
author
text
article
2014
per
In this study, solution coaxial electrospinning technique has been studied to improve the performance and stability shape of phase change materials (PCMs). A well-known PCM; polyethylene glycol (PEG) as core and Cellulose Acetate (CA) as shell were electrospun by coaxial spinneret. Scanning electronic microscopy (SEM) for morphological investigations, Transmission electronic microscopy (TEM) for confirming the core-shell fornication and PCM encapsulation in the shell structure and Differential scanning calorimetry (OSC) for evaluating the thermal properties of core-shell nanofibers were applied. Furthermore, 100 thermal heating and cooling cycles on core-shell nanofibers were carried out, then their thermal stability and morphology performance by using DSC and SEM were studied. Obtained results confirmed the core-shell formation and also show that thermal stability of structure was not changed significantly while shell structure still can effectively support the core against thermal oxidation.
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
455
462
https://amnc.aut.ac.ir/article_75183_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.2
Investigation of Effective parameters on the Density of Vertically-Aligned Carbon Nanotubes Synthesized by CVD Method
marzieh
MakenAli
Thin Film Laboratory, School of Physics, Iran University of Science and Technology (IUST), , Tehran
author
rasoul
Ajeian
Thin Film Laboratory, School of Physics, Iran University of Science and Technology (IUST), , Tehran
author
text
article
2014
per
In this study, carbon nanotubes (CNTs) was synthesized using ethanol as carbon source and sandwich structure of A1/Co/Al with 1nm Co thickness film as catalyst by chemical vapor deposition (CVD). The effect of the substrate, ethanol flow rate, and growth time on the density and structure of CNTs was investigated. SEM images show growth of low density of CNTs with spaghetti-like structure and also amorphous carbon upon glass and Cu substrates. The density of CNTs upon Si and quartz substrates was increased and vertically aligned CNTS (VACNTS) was seen. By decreasing and increasing of the ethanol flow rate from optimum amount of 0.8 sccm, low-density of CNTs with spaghetti-like structure was observed. By increasing the growth time from 5 min to 30 and 100 min, the density of VA-CNTS structure upon Si and quartz substrates was increased.
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
463
473
https://amnc.aut.ac.ir/article_75185_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.3
One-pot synthesis of solvent-base self-colored acrylic polymers
farahnaz
Nourmohammadian
Department of Organic Colorants, insstitute of Color Science and Technology, Tehran / Center of Excellence for Color Science and Technology, Tehran
author
manouchehr
khorasani
Color and Polymer Research Center, Amirkabir University of Technology, Tehran
author
shiva
shamekhi
Department of Organic Colorants, insstitute of Color Science and Technology, Tehran
author
text
article
2014
per
In this study, a simple route for producing self-colored polymers by grafting of chlorotriazine reactive azo dyes to a solvent-based polymer is described. The NH2 groups of acrylic moieties were bonded to electrophilic center of chlorotriazine reactive azo dyes via a bimolecular nucleophile substitution and leaving the chlorine group. Reactive Red 141 and Reactive Yellow 145 were applied on a solvent-based polymer. Therefore, two kinds of self-colored polymers were successfully synthesized. The obtained colored polymers were characterized by FT-IR and DSC spectroscopy.
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
474
479
https://amnc.aut.ac.ir/article_75186_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.4
The Study of Corrosion Resistance Behavior of Epoxy Nano Composite on Modified Steel using Conversion Coating Based on Hexa fluorozirconic Acid
amir
salmasifar
Faculty of Polymer Engineering & Color Technology, Islamic Azad University South Tehran Branch
author
Ali Asghar
Sarabi
Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran
author
reza
fazaeli
Department of Chemistry, Faculty of Basic Science, Islamic Azad University South Tehran Branch
author
hosein
Eivaz Mohammadloo
Faculty of Polymer Engineering & Color Technology, Amirkabir University of Technologyو Tehran
author
text
article
2014
per
In this research, corrosion resistance behavior of epoxy nano composite coatings, containing different percentages of nano clay particles (1%,2%,3% wt), was investigated on modified steel by Electrochemi-- cal Impedance Spectroscopy (EIS). The modification of substrate was accomplished using conversion coatings based on Hexafluorozirconic acid. The morphological properties of conversion coatings was. observed by Field Emission Scanning Electron Microscope (FE-SEM). In addition, the distribution structure of dispersed nano particles was studied by X-Ray Diffraction (XRD). Also, the pull-off test method was employed to measure the adhesion of composite coatings to modified steel substrate. EIS results clearly explained high corrosion resistance (58.7*106 Ohm.cm2) in epoxy matrix containing 3%wt nano clays. Tests results showed that conversion coatings impressively increased the corrosion resistance and coatings adhesion
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
480
489
https://amnc.aut.ac.ir/article_75187_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.5
Study of oxidation behavior of titanium carbide powders coated with alumina using simultaneous thermal analysis
davod
ghahremani
Materials & Energy Research Center, Alborz
author
touraj
ebadzadeh
Materials & Energy Research Center, Alborz
author
amir
maghsoudipour
Materials & Energy Research Center, Alborz
author
text
article
2014
per
In this work, a simultaneous thermal analyzer (STA) was carried out to examine the oxidation resistance of Tic powders without and with an alumina coating up to 1300°C. In order to study the effect of coating layer thickness on the oxidation resistance, cycling coating process was employed. SEM observations revealed the increment of alumina coating thickness with increase of the number of coating cycles and subsequently, the oxidation resistance of Tic particles. Furthermore, STA results showed the improvement of oxidation resistance of titanium carbide powders after two coating cycles in comparison with one coating cycle.
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
490
495
https://amnc.aut.ac.ir/article_75188_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.6
Influence of Citric and Maleic Acid on Photo Catalytic Properties of Nano TiO2/Polysiloxane on Polyester fabric
leila
azfarniam
Faculty of Engineering Islamic Azad University of Science and Research of Tehran, Tehran
author
majid
montazer
Faculty of Textile Engineering, Amirkabir University of Technology, Tehran
author
abousaeid
Rashidi
Faculty of Engineering Islamic Azad University of Science and Research of Tehran, Tehran
author
text
article
2014
per
This research has been carried out with aims of comparing nano TiO2 adsorption on the polyester fabric with two diverse polycarboxylic acids alone and along with siloxane based softener for producing polyester fabric with self-cleaning properties. Three types of polyester fabrics including raw and two hydrolyzed fabric with 1% and 10% weight reduction has been treated with nano TiO2/sodium hypophosphite/triethanol amine/siloxane softener/citric acid or maleic acid through pad-dry-cure method. The influence of tri ethanol amine was to prevent fabric yellowing due to the degradation of unsaturated carboxylic acid at high temperature. The self-cleaning properties of the treated fabrics with citric and maleic acid have been compared. The results of sliding test of methylene blue on the inclined fabric indicated that effect of staining on CA treated fabric is more than the MA treated fabrics also increasing the weight reduction led to the lower staining. The FT-IR spectrums confirmed the possible reaction between polyester fabric and carboxylic acids. The alkali hydrolyzed polyester fabrics with 10% weight reduction indicated better self-cleaning properties also the treated fabric with maleic acid indicated a higher self-cleaning properties, FESEM pictures indicated hydrolysis of polyester due to alkali treatment and EDX analysis showed the loading of nano TiO2 and siloxane softener on the fabric surface. Further, the amount of Ti and Si elements was higher on the alkali hydrolyzed polyester fabrics.
Advanced Materials and New Coatings
انجمن علمی رنگ ایران
2322-1356
2
v.
7
no.
2014
496
508
https://amnc.aut.ac.ir/article_75189_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org//amnc.2012.2.7.7