scholarly journals The Prevention of Marine Fouling on a FRP Ship Hull by Coating a Non-polluting and Antifouling Paint-II : Relation between Preventative Performance and Physical Properties of Silicone Coated Film

1997 ◽  
Vol 96 (0) ◽  
pp. 213-221
Author(s):  
Kazuya OGAWA
Keyword(s):  
Physical Properties ◽  
Ship Hull ◽  
Antifouling Paint ◽  
Marine Fouling ◽  
Coated Film

scholarly journals Performance of Rosin Modified Antifouling Coated on Mild Steel Surface at Various Immersion Orientation

2019 ◽  
Vol 8 (12) ◽  
pp. 5562-5565
Keyword(s):  
Steel Substrate ◽  
Oyster Shell ◽  
Antifouling Paint ◽  
Good Efficiency ◽  
Marine Fouling ◽  
Abnormal Growth ◽  
Testing Method ◽  
Pine Tree ◽  
Efficient Protection ◽  
Natural Base

Steel is one of materials that been used as a hull to build a ship. Steel are well known as strong, easy to fabricate and can withstand higher loading. Major problem for steel in shipbuilding are corrosion and marine fouling. Antifouling paint are applied at underwater hull paint to protect and slowing the microorganism growth, plant and animal that attached to the ship bottom hull. Important additive in antifouling paint known as Tributyltin (TBT) was previously observed good efficiency in prevent marine growth, however International Maritime Organization (IMO), in 2008 banned the usage of TBT due to abnormal growth of oyster shell. Thus, it is crucial to focus on an environmentally friendly antifouling paint and additive. Rosin modified paint is one of natural base of paint matrix that extract from pine tree. Performance of rosin modified with commercial biocide additive at various orientation are evaluate by referring to standard testing method on antifouling panels in shallow submergence. Rosin modified base observed good interaction with primer and steel substrate. Rosin modified antifouling (AF) coating for orientation 0º, 90º and 180º shows less than 4% marine growth after 30 days of immersion. AF coated at 0º and 90º -a orientation observe efficient protection with no marine growth occurred after 30 days of immersion.

Antibacterial and Physical Properties of Poly(vinyl chloride)-based Film Coated with ZnO Nanoparticles

2010 ◽  
Vol 16 (3) ◽  
pp. 225-232 ◽  
Author(s):  
X.H. Li ◽  
Y.G. Xing ◽  
W.L. Li ◽  
Y.H. Jiang ◽  
Y.L. Ding
Keyword(s):  
Antibacterial Activity ◽  
Physical Properties ◽  
Vinyl Chloride ◽  
Zno Nanoparticles ◽  
Uv Light ◽  
Nano Zno ◽  
Poly Vinyl Chloride ◽  
Pvc Film ◽  
Coated Film ◽  
Zno Particles

Nanoparticles of ZnO and their application in coating systems have attracted a great deal of attention in recent years because of its multifunction property, especially antibacterial activity. In this study, antibacterial and physical properties of poly(vinyl chloride) (PVC) based film coated with ZnO nanoparticles were investigated. It was found that the antibacterial action should be attributed to the killing effect property of ZnO nanoparticles. The ZnO-coated films treated by shaking for 10 h exhibited a similar high antibacterial activity against Escherichia coli and Staphylococcus aureus as the untreated ZnO-coated films. This result indicated that the ZnO nanoparticles adhered very well to the plastic film. The antibacterial activity of the ZnO-coated film to inactivate E. coli or S. aureus was improved by UV irradiation. The analysis of physical properties of the ZnO-coated films revealed that the nano-ZnO particles showed less effects on the tensile strength and elongation at break of the film. The ultraviolet (UV) light fastness of the ZnO-coated PVC film was improved, which may be attributed to the absorption of ZnO nanoparticles against UV light. Water vapor transmission of the ZnO-coated film decreased from 128 to 85 g/m 2 · 24 h, whereas the thickness of film increased from 6.0 μm with increasing the amount of nano-ZnO particles coated from 0 to 187.5 μg/cm 2. This research revealed that the PVC film coated with nano-ZnO particles has a good potential to be used as an active coating system for food packaging.

Investigation on the physical properties of Zn0.94Cu0.06O coated film

Optik ◽  
2016 ◽  
Vol 127 (5) ◽  
pp. 2911-2913 ◽  
Author(s):  
S. Chackrabarti ◽  
R.A. Zargar ◽  
D. Ali ◽  
M. Arora ◽  
A. Aziz ◽  
...  
Keyword(s):  
Physical Properties ◽  
Coated Film

The Photometric Properties of the Ap Stars

1976 ◽  
Vol 32 ◽  
pp. 365-377 ◽  
Author(s):  
B. Hauck
Keyword(s):  
Physical Properties ◽  
Ap Stars

The Ap stars are numerous - the photometric systems tool It would be very tedious to review in detail all that which is in the literature concerning the photometry of the Ap stars. In my opinion it is necessary to examine the problem of the photometric properties of the Ap stars by considering first of all the possibility of deriving some physical properties for the Ap stars, or of detecting new ones. My talk today is prepared in this spirit. The classification by means of photoelectric photometric systems is at the present time very well established for many systems, such as UBV, uvbyβ, Vilnius, Geneva and DDO systems. Details and methods of classification can be found in Golay (1974) or in the proceedings of the Albany Colloquium edited by Philip and Hayes (1975).

The Infection of Cells by Bullet-Shaped Viruses

1969 ◽  
Vol 27 ◽  
pp. 372-373
Author(s):  
Frederick A. Murphy ◽  
Alyne K. Harrison ◽  
Sylvia G. Whitfield
Keyword(s):  
Electron Microscopy ◽  
Physical Properties ◽  
Host Cell ◽  
Thin Section ◽  
Cultured Cells ◽  
Cell Infection ◽  
Thin Section Electron Microscopy ◽  
Section Electron ◽  
Section Electron Microscopy

The bullet-shaped viruses are currently classified together on the basis of similarities in virion morphology and physical properties. Biologically and ecologically the member viruses are extremely diverse. In searching for further bases for making comparisons of these agents, the nature of host cell infection, both in vivo and in cultured cells, has been explored by thin-section electron microscopy.

Transmission electron microscopy of composite materials

1988 ◽  
Vol 46 ◽  
pp. 1012-1015
Author(s):  
K.P.D. Lagerlof
Keyword(s):  
Composite Materials ◽  
Physical Properties ◽  
Structural Defects ◽  
Structural Composites ◽  
Multiphase Materials ◽  
Structural Reinforcement ◽  
Transmission Electron ◽  
Reinforced Fiber ◽  
Particulate Reinforced Composites ◽  
Definition Of

Although most materials contain more than one phase, and thus are multiphase materials, the definition of composite materials is commonly used to describe those materials containing more than one phase deliberately added to obtain certain desired physical properties. Composite materials are often classified according to their application, i.e. structural composites and electronic composites, but may also be classified according to the type of compounds making up the composite, i.e. metal/ceramic, ceramic/ceramie and metal/semiconductor composites. For structural composites it is also common to refer to the type of structural reinforcement; whisker-reinforced, fiber-reinforced, or particulate reinforced composites [1-4].For all types of composite materials, it is of fundamental importance to understand the relationship between the microstructure and the observed physical properties, and it is therefore vital to properly characterize the microstructure. The interfaces separating the different phases comprising the composite are of particular interest to understand. In structural composites the interface is often the weakest part, where fracture will nucleate, and in electronic composites structural defects at or near the interface will affect the critical electronic properties.

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