Preliminary Structure Characterization of UV Curing Paint Film

2015 ◽  
Vol 1120-1121 ◽  
pp. 49-52
Author(s):  
Jing Jing Qi ◽  
Mao Bing Shuai ◽  
Yuan Lin Zhou ◽  
Feng Wen Chang
Keyword(s):  
Photoelectron Spectroscopy ◽  
Paint Film ◽  
Uv Curing ◽  
Structure Characterization ◽  
Good Adhesion ◽  
Adhesive Properties ◽  
Liquid Chromatograph ◽  
Low Surface Energy ◽  
The Impact

PC film has some shortcomings such as low surface energy and strong rigidity. In order to improve the impact strength and adhesive properties of PC film, UV curing coating which was used on the surface of the PC film achieved good results. However, the combination between the UV curing paint-PC composite membrane had not been explained clearly. In this paper, we analyzed the structure of UV curing varnish oligomers. Fourier Transform Infrared Spectroscopy (FTIR) 、X-ray Photoelectron Spectroscopy (XPS) and Liquid Chromatograph Mass Spectrometer (LC-MS) were used to characterize. Through the experiment, we had achieved 4, 4’ -Isopropyliden-edicyclohexanol(HBPA) and Phthalic acid . The existence of the two substances explained the reason why the lacquer had good adhesion, and the result also laid the foundation for the the characterization of the molecular structure about the film later.

scholarly journals Electrografting of 4-Carboxybenzenediazonium on Glassy Carbon Electrode: The Effect of Concentration on the Formation of Mono and Multilayers

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4575
Author(s):  
Sereilakhena Phal ◽  
Kenichi Shimizu ◽  
Daniel Mwanza ◽  
Philani Mashazi ◽  
Andrey Shchukarev ◽  
...  
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Photoelectron Spectroscopy ◽  
Diazonium Salt ◽  
Oxidation Potential ◽  
Carbon Surface ◽  
Carbon Electrode ◽  
Number Of Layers ◽  
The Impact

Grafting of electrodes with diazonium salts using cyclic voltammetry (CV) is a well-established procedure for surface modification. However, little is known about the effect of the concentration of the diazonium salt on the number of layers grafted on the electrode surface. In this work, the impact of concentration on the grafting of 4-carboxybenzenediazonium (4-CBD) onto a glassy carbon electrode (GCE) is elucidated. The number of layers grafted on the GCE was linearly dependent on the concentration of 4-CBD and varied between 0.9 and 4.3 when the concentration was varied between 0.050 and 0.30 mmol/L at 0.10 V.s−1. Characterization of modified glassy carbon surface with X-ray photoelectron spectroscopy (XPS) confirmed the grafting of carboxyphenyl layer on the surface. Grafting with 0.15 mmol/L 4-CBD (1 CV cycle) did not form a detectable amount of carboxyphenyl (CP) moieties at the surface, while a single scan with higher concentration (2.5 mmol/L) or multiple scans (22 cycles) gave detectable signals, indicating formation of multilayers. We also demonstrate the possibility of removing the thin layer grafted on a glassy carbon electrode by applying high oxidation potential +1.40 V.

Preparation and Characterization of Water Absorbing and Anti-Fogging Coatings

2016 ◽  
Vol 848 ◽  
pp. 722-725
Author(s):  
Kai Wang ◽  
Min Huang ◽  
Yue Huang ◽  
Zhong Hua Zhou ◽  
Shirley Shen
Keyword(s):  
Three Dimensional ◽  
Steam Bath ◽  
Structure Characterization ◽  
Hydroxyl Groups ◽  
Functional Coatings ◽  
Cure Reaction ◽  
Water Steam ◽  
Dimensional Network ◽  
The Impact

Anti-fogging functional coatings have a broad application prospective in the fields of construction and transportation vehicles. In this study, superior water absorbing and anti-fogging coatings were prepared by a cure reaction using epoxy resins as water absorbent resins, hydroxyethyl ethylenediamine as a curing agent, γ-ammonia propyl triethoxy silane as a coupling agent, organic silicon sol as filler. The impact of additional polyethylene glycol (PEG) on the properties of water absorbing and antifogging coating has also been studied. The anti-fogging experiments were conducted in a 40 °C water steam bath, and the result shows that the sample with additional 4.0 % PEG has an anti-fogging time of 315 seconds (s), which is better than that without PEG (the anti-fogging time being 240s). Infrared spectroscopy and scanning electron microscope structure characterization indicate that the sample with additional PEG has an obvious three-dimensional network structure with hydroxyl groups, which leads to a great saturated water quantity and a superior anti-fogging performance.

scholarly journals The Synthesis and Characterization of Novel Bi-/Trimetallic Nanoparticles and Their Nanocomposite Membranes for Envisaged Water Treatment

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 232
Author(s):  
Lwazi Ndlwana ◽  
Keneiloe Sikhwivhilu ◽  
Richard Motlhaletsi Moutloali ◽  
Jane Catherine Ngila
Keyword(s):  
Electron Microscopy ◽  
Water Treatment ◽  
Photoelectron Spectroscopy ◽  
Pure Water ◽  
Synthesis And Characterization ◽  
Nanocomposite Membranes ◽  
X Ray ◽  
Water Permeation ◽  
The Impact

The impact of worldwide water scarcity, further exacerbated by environmental pollution, necessitates the development of effective water treatment membranes. Herein, we report the synthesis and characterization of nanocomposite membranes containing hyperbranched polyethyleneimine (HPEI) stabilized bi-and trimetallic nanoparticles. These membranes were prepared by blending a pre-grafted Polyethersulfone (PES) powder with the Pd@Fe@HPEI and Pd@FeAg@HPEI nanoparticles followed by phase inversion. The membranes, together with stabilized nanoparticles, were characterized by several analytical techniques, such as attenuated total reflectance–Fourier transform infra-red spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), optical contact angle (OCA), scanning electron microscopy (SEM), atomic force microscopy (AFM), and high-resolution transmission electron microscopy (HRTEM). These techniques revealed the elemental composition, zerovalent nature of the nanoparticles, and their small and even size distribution. Surface analysis showed chemical bonding between the polymeric functional groups and the supported nanoparticles. Furthermore, the nanocomposite membranes were found to be hydrophilic. Additionally, the membranes were investigated for swelling (water uptake), porosity, pore size, pure water permeation fluxes, and they indicated a decreased protein adhesion property. As such, the membranes fabricated in this work indicate the required properties for application in water treatment.

Development of Characterization and Analysis Methods for Graphene Modified Coatings for Tubing

2019 ◽  
Vol 944 ◽  
pp. 923-929 ◽  
Author(s):  
Ya Qiong Cao ◽  
Chun Feng ◽  
Li Juan Zhu ◽  
Rui Zhe Li
Keyword(s):  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Structure Characterization ◽  
Corrosion Mechanism ◽  
Corrosion Condition ◽  
Anticorrosive Coating ◽  
X Ray ◽  
Graphene Coating ◽  
And Performance

With the further deterioration of the oil and gas exploitation environment, the corrosion of tubing becomes an intractable problem. Therefore, choosing suitable anticorrosive coating is of great significance to the safe operation life of tubing and reduce economic cost. Effect addition of appropriate graphene in coatings can significantly improve its corrosion resistance of the coating. However, most of the applied research are focus on marine heavy corrosion condition; the relationship between the corrosion mechanism and performance of graphene coating for tubing is not clear, probably due to difficulty in the characterization of the organizational structure characterization of the graphene modified coating. In the present work, Typical methods of the graphene coating characterization: Scanning Electron Microscope (SEM) with EDS, Transmission Electron Microscope (TEM), Atomic Force Microscope (AFM), X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) will be introduced, and the application prospect of the coating will be discussed. It indicated that the single characteristic method cannot analysis the structure and morphology information of graphene anticorrosion coating comprehensively. Flexibly use of a variety of characterization methods to study the anticorrosion mechanism and performance of the graphene modified coating for tubing is a better choice. The graphene modified anticorrosive coating for tubing is with the potential of wide applications.

Structure characterization of UV-curing PEG-b-PPG-b-PEG dimethacrylate cross-linked network

Polymer ◽  
2018 ◽  
Vol 153 ◽  
pp. 241-249 ◽  
Author(s):  
Enmin Wang ◽  
Abed Hasheminasab ◽  
Yuanhao Guo ◽  
Mark D. Soucek ◽  
Miko Cakmak
Keyword(s):  
Uv Curing ◽  
Structure Characterization

Characterization of microwave-sintered ceramic composites

1993 ◽  
Vol 51 ◽  
pp. 1136-1137
Author(s):  
X. Zhang ◽  
Y. Pan ◽  
T.T. Meek
Keyword(s):  
Matrix Material ◽  
Maximum Output Power ◽  
Ceramic Matrix Composite ◽  
Ceramic Composites ◽  
Processing Technique ◽  
Structure Characterization ◽  
Alumina Powder ◽  
Maximum Output ◽  
Sintered Ceramic

Industrial microwave heating technology has emerged as a new ceramic processing technique. The unique advantages of fast sintering, high density, and improved materials properties makes it superior in certain respects to other processing methods. This work presents the structure characterization of a microwave sintered ceramic matrix composite.Commercial α-alumina powder A-16 (Alcoa) is chosen as the matrix material, β-silicon carbide whiskers (Third Millennium Technologies, Inc.) are used as the reinforcing element. The green samples consisted of 90 vol% Al2O3 powder and 10 vol% ultrasonically-dispersed SiC whiskers. The powder mixture is blended together, and then uniaxially pressed into a cylindrical pellet under a pressure of 230 MPa, which yields a 52% green density. The sintering experiments are carried out using an industry microwave system (Gober, Model S6F) which generates microwave radiation at 2.45 GHz with a maximum output power of 6 kW. The composites are sintered at two different temperatures (1550°C and 1650°C) with various isothermal processing time intervals ranging from 10 to 20 min.

Recent data on the causative agent of pale green dwarf (Acholeplasma laidlawii var. granulum incertae sedis) in Ukraine: pathogenicityand virulence factors and host reactions

2015 ◽  
Vol 2 (1) ◽  
pp. 30-34
Author(s):  
K. Korobkova ◽  
V. Patyka
Keyword(s):  
Phenylalanine Ammonia Lyase ◽  
Proteolytic Enzymes ◽  
Physiological State ◽  
Plant Cells ◽  
Temporary Increase ◽  
Adhesive Properties ◽  
The Impact ◽  
Signaling Interactions ◽  
Pale Green

Contemporary state of the distribution of mycoplasma diseases of cultivated crops in Ukraine was analyzed. The changes of the physiological state of plant cells under the impact of mollicutes were investigated. It was demonstrated that there is temporary increase in the activity of peroxidase, catalase, polyphenoloxidase, phenylalanine-ammonia-lyase at the early stages of interaction. The adhesive properties are changed in the mollicutes under the impact of plant lectin; there is synthesis of new polypeptides. It was determined that the phytopathogenic acholeplasma is capable of producing a complex of proteolytic enzymes into the culture me- dium. It was concluded that when plant cells are infected with acholeplasma, a number of signaling interactions and metabolic transformations condition the recognition of pathogenesis and ensure the aggregate response of a plant to stress in the form of defense reactions. It was assumed that some specifi cities of the biology of phy- topathogenic acholeplasma determine their avoiding the immune mechanisms of plants and promote long-term persistence of mollicutes.

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