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PubMed Journals Articles About "High Temperature Coatings Market Resin Type Epoxy Alkyd" RSS

15:23 EST 20th January 2019 | BioPortfolio

High Temperature Coatings Market Resin Type Epoxy Alkyd PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest High Temperature Coatings Market Resin Type Epoxy Alkyd articles that have been published worldwide.

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Showing "High Temperature Coatings Market Resin Type Epoxy Alkyd" PubMed Articles 1–25 of 44,000+

Occupational asthma from epoxy compounds.

Two-component epoxy resin systems (ERS) composed of epoxy resin and polyamine hardeners are extensively used in industrial and construction coating. Triglycidyl isocyanurate (TGIC) is another type of epoxy derivative, mostly encountered in polyester powder paints. Epoxy compounds are well known skin sensitizers, but their respiratory sensitizing potential is largely unknown.


Formation of CO bubbles in epoxy resin coatings: A DFT study.

The epoxy resin coating is a fundamental species with epoxy resins used as main components to form the final film. Unexpectedly, bulky CO bubbles that occasionally appeared during the curing process of epoxy resin coatings might destroy the final film properties. With an attempt to thoroughly understand the formation mechanism of CO bubbles and further propose countermeasures to control them, Density Function Theory (DFT) in this paper was employed to calculate the absorption process, the curing reaction an...

Enhanced Wear Performance of Hybrid Epoxy-ceramic Coatings on Magnesium Substrates.

Epoxy-based polymer was deposited as sealing agent on porous anodized coatings prepared by plasma electrolytic oxidation (PEO) to construct multilayered "soft-hard" coatings on Mg substrates. Different thicknesses and microstructures of the top epoxy layer were achieved by employing different dip-coating strategies. Atomic force microscopye (AFM), pull-off tests and nanoindentation tests were conducted to study the surface roughness, the adhesion strength of the epoxy layer and the mechanical properties of ...


Density-Functional Tight-Binding Study on the Effects of Interfacial Water in the Adhesion Force between Epoxy Resin and Alumina Surface.

Adhesion is one of the most interesting subjects in interface phenomena from the viewpoint of wide-range applications as well as basic science. Interfacial water has significant effects on coatings, adhesives, and fiber-reinforced polymer composites, often causing adhesion loss. The way of thinking based on quantum mechanics is essential for a better understanding of physical and chemical properties of adhesive interfaces. In this work the molecular mechanism of the adhesion interaction between epoxy resin ...

Ultrastiff Graphene Foams as Three-Dimensional Conductive Fillers for Epoxy Resin.

Conductive epoxy composites are of great interest due to their applications in electronics. They are usually made by mixing powdered conductive fillers with epoxy. But the conductivity of the composite is limited by the low filler content because increasing filler content causes processing difficulties and reduces the mechanical properties of the epoxy host. We describe here the use of ultrastiff graphene foams (uGFs) as three-dimensional (3D) continuous conductive fillers for epoxy resins. The powder metal...

A comparative evaluation of antimicrobial efficacy and flow characteristics of two epoxy resin-based sealers-AH plus and Perma Evolution: An study.

Bacteria that persist at the time of obturation increase the possibility of persistent apical periodontitis. An ideal sealer should be able to kill these remaining bacteria that are present on the dentinal walls as well as inside the dentinal tubules. This could be possible if a sealer has antimicrobial properties with optimum flow characteristics. Hence, the aim of this study was to assess the antimicrobial efficacy of epoxy resin-based sealer: AH Plus and Perma Evolution against on the 1, 3, 5, and 7 da...

Alkyd resin based hydrophilic self-cleaning surface with self-refreshing behaviour as single step durable coating.

Herein, we reported the photo-catalytic degradation/anti-bacterial property of Ag-doped ZnO nanoparticles (SDZO Nps) prepared by a facile gel-combustion technique and its self-cleaning/self-refreshing/self-disinfectant behaviour while on impregnating as pigment into the alkyd resin based coating. The influence of doping Ag (1% & 2%) with ZnO has been evaluated in terms of crystal structure, morphology, optical properties, etc. using X-ray diffraction analysis, Field Emission Scanning Electron Microscope, UV...

Superhydrophobic Coating for Anti-fouling of Chinese Paintings.

In past 10 years, many studies on superhydrophobic (SH) papers have been reported. However, these works rarely carried out on Chinese Paintings. Compared with pure paper, the complexity of Chinese black ink and pigment caused by including animal glue, an emulsion agents and fixatives allowing for the nanoparticles to disperse in water, negatively affects the formation of SH coatings. In this work, we report the fabrication of SH coatings using fluorine silicon sol containing epoxy group on Chinese Paintings...

Thin Nacre Biomimetic Coating with Super-Anticorrosion Performance.

The rigorous organic/inorganic laminated structure of nacre is developed by millions of years of biological evolution against various external impacts including mechanical loadings and chemical attacks. Nacre-biomimetic materials have been recognized as an effective strategy to achieve high strength and toughness simultaneously. Yet, the understanding of nacre-like structure from the perspective of corrosion protection is still very limited. This work investigates the anticorrosion performance of nacre-biom...

Pyromellitic dianhydride (PMDA) may cause occupational asthma.

Anhydrides are widely used as cross-linking agents in epoxy resins and alkyd production, for example, as coatings and adhesives in plastic products. Sensitisation to several anhydrides is known to cause occupational asthma. There are indications that the lesser known pyromellitic dianhydride (PMDA) can cause irritative respiratory symptoms and possibly asthma. We report three cases of workers from a plastic foil manufacturing plant, who developed asthma when exposed to PMDA during specific inhalation challe...

Comparison of the effectiveness of various rotary and reciprocating systems with different surface treatments to remove gutta-percha and an epoxy resin-based sealer from straight root canals.

To compare the Reciproc Blue, Reciproc, and ProTaper Universal Retreatment systems with regard to the effective removal of epoxy resin-based sealer and gutta-percha during the retreatment of oval, straight root canals.

Responsive coatings from naturally occurring pectin polysaccharides.

Pectin polysaccharides have significant potential as all-natural, non-toxic "green" coatings that exhibit thermally-cued swelling behavior. Herein, ultra-thin coatings of highly-esterified pectin polysaccharides were cross-linked with calcium chloride (CaCl) and their swelling in water was investigated with ellipsometry. At low temperatures, the coatings swell to 2-3 times their dry layer thickness. As the temperature is increased, the coatings show a pronounced decrease in swollen thickness, reminiscent of...

Effects of market type and time of purchase on oxidative status and descriptive off-odors and off-flavors of beef in Vietnam.

The objective of the current study was to determine the effects of market type (super market - SM, indoor market - IM, open market - OM) and sampling time (at the opening - T0 and 4 h after the opening - T4) on antioxidant capacity, lipid oxidation, and descriptive sensory attributes of beef in Vietnam. Values of FC and TEAC were greater in OM beef than IM and SM (P 

Functionalized graphene with Co-ZIF adsorbed borate ions as an effective flame retardant and smoke suppression agent for epoxy resin.

In order to reduce the fire risk of epoxy resin (EP), functionalized reduced graphene oxide (RGO) with Co-ZIF (zeolitic imidazolate frameworks-67) adsorbed borate ions (ZIF-67/RGO-B) was prepared. The results of transmission electron microscopy (TEM) showed that ZIF-67 was grown on the surface of RGO triumphantly. In addition, the structure of ZIF-67/RGO-B was not significantly changed compared with ZIF-67/RGO. Subsequently, ZIF-67/RGO-B was added into EP by a simple blending method. The combustion results ...

Soft 3D Microscale Vibratory Platforms for Characterization of Nano-Thin Polymer Films.

Vibrational resonances of microelectromechanical systems (MEMS) can serve as means for assessing physical properties of ultrathin coatings in sensors and analytical platforms. Most such technologies exist in largely two-dimensional (2D) configurations with a limited total number of accessible vibration modes and modal displacements, thereby placing constraints on design options and operational capabilities. This study presents a set of concepts in three-dimensional (3D) microscale platforms with vibrational...

Photoinitiated Seeded RAFT Dispersion Polymerization: A Facile Method for the Preparation of Epoxy-Functionalized Triblock Copolymer Nano-Objects.

In this study, a novel photoinitiated seeded reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization is developed for the preparation of epoxy-functionalized triblock copolymer nano-objects at room temperature. Epoxy-functionalized worms and vesicles prepared by photoinitiated RAFT dispersion polymerization of glycidyl methacrylate are used as seeds for chain extension by photoinitiated seeded RAFT dispersion polymerization of methacrylic and acrylic monomers. Good control is maint...

A high-temperature plugging system for offshore heavy oil thermal recovery.

There are many heavy oil reservoirs in offshore oilfields in China. Steam and multiple thermal fluid stimulation technologies are of increasing interest and have been applied to an increasing number of projects. During the stimulation or displacement of heavy oil reservoirs during thermal recovery, several factors, such as reservoir heterogeneity, are prone to cause channeling phenomena and affect the thermal recovery effect of steam stimulation. According to the unique requirements for the stimulation of m...

Multifunctional Epoxy-Based Solid Polymer Electrolytes for Solid-State Supercapacitors.

Solid polymer electrolytes (SPEs) have drawn attention for promising multifunctional electrolytes requiring high mechanical properties and ionic conductivity. To develop a safe SPE for energy storage applications, mechanically robust cross-linked epoxy matrix is combined with fast ion diffusing ionic liquid/lithium salt electrolyte (ILE) via a simple one-pot curing process. The epoxy-rich SPEs show higher Young's modulus (E) with higher glass transition temperature (T), but lower ionic conductivity (σ) wit...

Thermally and photocatalytically active multifunctional porous coatings for high temperature applications.

In this study, the thermal catalytic powder mixtures of Mn, Ce and Co oxides supported on AlO were synthesized. In order to obtain thermally active porous coating on the steel substrate, a binder solution produced via sol-gel method was used to bind the synthesized powder. Additionally by incorporation of TiO nanoparticles to previously described thermally active coating, both thermally and photocatalytically active multifunctional surfaces were obtained. The self-cleaning property and the rate of volatile ...

Synthesis, crystal structure, and compressibilities of Mn3-xIr5B2+x (0 ≤ x ≤ 0.5) and Mn2IrB2.

The new ternary transition metal borides Mn3-xIr5B2+x (0 ≤ x ≤ 0.5) and Mn2IrB2 were synthesized from the elements at high temperature and high-pressure/high-temperature conditions. Both phases can be synthesized as powder samples in a radio-frequency furnace in argon atmosphere. High-pressure/high-temperature conditions were used to grow single-crystals. The phases represent the first ternary compounds within the system Mn-Ir-B. Mn3-xIr5B2+x (0 ≤ x ≤ 0.5) crystallizes in the Ti3Co5B2 structure type...

Clay-based superamphiphobic coatings with low sliding angles for viscous liquids.

Although significant attention has been paid, most of superamphiphobic surfaces suffer from high sliding angles (SA) for liquids with low surface tension and complicated preparation methods. Also, superamphiphobic coatings with high repellency to the liquids with very high viscosity and low surface tension are rare. Here, we report preparation of clay-based superamphiphobic coatings with low SAs for viscous liquids. A homogeneous suspension was prepared by hydrolytic condensation of 1H,1H,2H,2H-perfluorodec...

Epoxy isonitriles, a unique class of antibiotics - Synthesis of their metabolites and biological investigations.

Epoxy isonitrile containing natural products often possess specific and potent antibacterial activity against Gram-positive pathogens. This scaffold, however, is extremely labile under acidic and basic conditions, undergoing a Payne rearrangement to produce a stable epoxy ketone metabolite and releasing hydrogen cyanide. We synthesized and performed biological assays with epoxy ketone containing metabolites and identified that the epoxy isonitrile moiety is pertinent for biological activity. Serendipitously...

Investigation of Cutting Temperature during Turning Inconel 718 with (Ti,Al)N PVD Coated Cemented Carbide Tools.

Physical Vapor Deposition (PVD) TiAlN coated cemented carbide tools are commonly used to cut difficult-to-machine super alloy of Inconel 718. The Al concentration of TiAlN coating can affect the coating microstructure, mechanical and thermo-physical properties of TiAlN coating, which affects the cutting temperature in the machining process. Cutting temperature has great influence on the tool life and the machined surface quality. In this study, the influences of PVD (Ti,Al)N coated cemented carbide tools o...

3D-printed Franz type diffusion cells.

Franz cells are routinely used to measure in vitro skin permeation of actives and must be inert to the permeant under study. The aim of the present work was to develop and manufacture transparent Franz-type diffusion cells using 3D printing and test these using a range of model active compounds. The study also aims to identify the critical 3D printing parameters necessary for the process including object design, choice of printing resin, printout curing and post-curing settings and introduction of model coa...

Borinic Acid/Halide Co-catalyzed Semipinacol Rearrangements of 2,3-Epoxy Alcohols.

A new mode of catalysis of the semipinacol rearrangement of 2,3-epoxy alcohols is described. In combination with a halide salt additive, diarylborinic acids promote a Type II rearrangement that occurs with net retention of configuration. This unusual stereochemical outcome is consistent with a mechanism involving regioselective ring opening of the epoxy alcohol by halide, followed by rearrangement of the resulting halohydrin-derived borinic ester. The protocol is applicable to a range of substrates, enablin...


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