scholarly journals Overview of Silica-Polymer Nanostructures for Waterborne High-Performance Coatings

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1003
Author(s):  
Tiago D. Martins ◽  
Tânia Ribeiro ◽  
José Paulo S. Farinha
Keyword(s):  
High Performance ◽  
Hybrid Nanostructures ◽  
Inorganic Filler ◽  
Functional Coatings ◽  
Hybrid Films ◽  
Coating Materials ◽  
Polymer Nanostructures ◽  
Performance Functional ◽  
High Performance Coating ◽  
Inorganic Components

Combining organic and inorganic components at a nanoscale is an effective way to obtain high performance coating materials with excellent chemical and physical properties. This review focuses on recent approaches to prepare hybrid nanostructured waterborne coating materials combining the mechanical properties and versatility of silica as the inorganic filler, with the flexural properties and ease of processing of the polymer matrix. We cover silica-polymer coupling agents used to link the organic and inorganic components, the formation of hybrid films from these silica-polymer nanostructures, and their different applications. These hybrid nanostructures can be used to prepare high performance functional coatings with different properties from optical transparency, to resistance to temperature, hydrophobicity, anti-corrosion, resistance to scratch, and antimicrobial activity.

Cubic silsesquioxanes as tunable high-performance coating materials

2013 ◽  
Vol 27 (11) ◽  
pp. 652-659 ◽  
Author(s):  
Hyun Wook Ro ◽  
Vera Popova ◽  
Dave J. Krug ◽  
Aaron M. Forster ◽  
Richard M. Laine ◽  
...  
Keyword(s):  
High Performance ◽  
Coating Materials ◽  
High Performance Coating

Application of Supersonic Flame Spraying for Next Generation Cylinder Liner Coatings

2012 ◽  
Vol 533 ◽  
pp. 91-97 ◽  
Author(s):  
Andrei Manzat ◽  
A. Killinger ◽  
R. Gadow
Keyword(s):  
Corrosion Resistance ◽  
Surface Topography ◽  
High Performance ◽  
Combustion Engine ◽  
Cylinder Liner ◽  
Flame Spraying ◽  
Oil Consumption ◽  
Functional Coatings ◽  
Coating Materials ◽  
Cylinder Liners

Rising demands for ecologically friendly automotive engines require a significant decrease in fuel consumption and emissions. Also the recent trend of downsizing engines demands for high performance materials for internal combustion engine applications. Tribologically functional coatings applied by supersonic flame spraying help in boosting the engine efficiency by reducing the internal friction and improving the durability and wear resistance of the cylinder running surface much-needed for engine downsizing tasks together with a high corrosion resistance enabling the use of bio fuels. In addition, the tailored surface topography of the thermal spray coatings help in supporting advantageous friction states and thereby show the benefit of reducing the oil consumption resulting in reduced emissions. The thermally sprayed coatings were applied using HVOF and HVSFS processes together with a specially designed spray gun trajectory in order to achieve a fast and cost efficient coating procedure. Several different coating materials, including novel nanostructured powders, have been investigated and compared to state-of-the-art cylinder liners. The performance of the coated cylinder liners regarding wear and corrosion resistance, friction coefficient and effects of the surface topography have been investigated in various test setups including engine tests.

scholarly journals Synthesis and characterization of a novel carboxyl group containing (co)polyimide with sulfur in the polymer backbone

2012 ◽  
Vol 8 ◽  
pp. 776-786 ◽  
Author(s):  
Miroslav Mrsevic ◽  
David Düsselberg ◽  
Claudia Staudt
Keyword(s):  
Organic Solvents ◽  
High Performance ◽  
Moisture Uptake ◽  
Separation Processes ◽  
Coating Materials ◽  
Polymer Backbone ◽  
Wide Range ◽  
Optical Applications ◽  
Transparent Polymers ◽  
High Performance Coating

Soluble functional (co)polyimides are of great interest in the area of separation processes or optical applications, due to their excellent mechanical-, thermal- and optical properties, their superior processability and the ability to adapt their properties to a wide range of special applications. Therefore, two series of novel (co)polyimides containing fluorinated sulfur- and carboxylic acid groups consisting of 4,4′-(hexafluoroisopropylidene)di(phthalic anhydride) (6FDA), 3,5-diaminobenzoic acid (DABA), 4,4′-diaminodiphenylsulfide (4,4′-SDA) and 3,3′-diaminodiphenylsulfone (3,3′-DDS) were synthesized in a two-step polycondensation reaction. The synthesized copolymers were characterized by using NMR, FTIR, GPC, and DSC. Furthermore, with regard to processing and potential applications, the thermal stability, solubility in common organic solvents, moisture uptake, and transparency were investigated. Compared to commercially available transparent polymers, i.e., polymethylmethacrylate and cycloolefin polymers, the sulfur (co)polyimides containing carboxyl groups showed much higher glass-transition temperatures, comparably low moisture uptake and high transmission at the sodium D-line. Furthermore, good solubility in commonly used organic solvents makes them very attractive as high-performance coating materials.

ChemInform Abstract: Cubic Silsesquioxanes as Tunable High-Performance Coating Materials.

ChemInform ◽  
2014 ◽  
Vol 45 (3) ◽  
pp. no-no
Author(s):  
Hyun Wook Ro ◽  
Vera Popova ◽  
Dave J. Krug ◽  
Aaron M. Forster ◽  
Richard M. Laine ◽  
...  
Keyword(s):  
High Performance ◽  
Coating Materials ◽  
High Performance Coating

scholarly journals Engineering at the Nanoscale: A Strategy for Developing High-Performance Functional Polymer Nanocomposites

2020 ◽  
Vol 2 (2) ◽  
pp. 13
Keyword(s):  
Metal Oxides ◽  
Polymer Nanocomposites ◽  
Carbon Nanostructures ◽  
High Performance ◽  
Carbon Nanomaterials ◽  
Hybrid Nanostructures ◽  
Functional Polymer ◽  
Degradable Polymer ◽  
Nano Cellulose ◽  
Performance Functional

The talk will concentrate on various approaches being used to engineer materials at the nanoscale for various applications in future technologies. In particular, the case of clay, carbon nanostructures (e.g., nanotubes, graphene), metal oxides, bionanomaterials (cellulose, starch, and chitin) will be used to highlight the challenges and progress. Several bio-degradable polymer systems will be considered, such as rubbers, thermoplastics, thermosets, and their blends for the fabrication of functional polymer nanocomposites. The interfacial activity of nanomaterials in compatibilism binary polymer blends will also be discussed. Various self-assembled architectures of hybrid nanostructures can be made using relatively simple processes. Some of these structures offer an excellent opportunity to probe novel nanoscale behavior and can impart unusual macroscopic end properties. I will talk about various applications of these materials, taking into account their multifunctional properties. Some of the promising applications of clay, metal oxides, nano cellulose, chitin, carbon nanomaterials, and their hybrids will be reviewed.

scholarly journals Micro/Nano Technologies for High-Density Retinal Implant

Micromachines ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 419 ◽  
Author(s):  
Qi Zeng ◽  
Saisai Zhao ◽  
Hangao Yang ◽  
Yi Zhang ◽  
Tianzhun Wu
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
High Density ◽  
Future Research ◽  
Electronic Systems ◽  
Retinal Neuron ◽  
Retinal Implant ◽  
Coating Materials ◽  
Retinal Stimulation ◽  
High Performance Coating

During the past decades, there have been leaps in the development of micro/nano retinal implant technologies, which is one of the emerging applications in neural interfaces to restore vision. However, higher feedthroughs within a limited space are needed for more complex electronic systems and precise neural modulations. Active implantable medical electronics are required to have good electrical and mechanical properties, such as being small, light, and biocompatible, and with low power consumption and minimal immunological reactions during long-term implantation. For this purpose, high-density implantable packaging and flexible microelectrode arrays (fMEAs) as well as high-performance coating materials for retinal stimulation are crucial to achieve high resolution. In this review, we mainly focus on the considerations of the high-feedthrough encapsulation of implantable biomedical components to prolong working life, and fMEAs for different implant sites to deliver electrical stimulation to targeted retinal neuron cells. In addition, the functional electrode materials to achieve superior stimulation efficiency are also reviewed. The existing challenge and future research directions of micro/nano technologies for retinal implant are briefly discussed at the end of the review.

Designing novel multilayered nanocomposites for high-performance coating materials with online strain monitoring capability

2017 ◽  
Vol 233 (4) ◽  
pp. 664-675 ◽  
Author(s):  
Hashina P Anwar Ali ◽  
Ihor Radchenko ◽  
Jiahui Zhou ◽  
Liu Qing ◽  
Arief Budiman
Keyword(s):  
High Performance ◽  
Linear Trend ◽  
True Strain ◽  
Ex Situ ◽  
Large Strains ◽  
Coating Materials ◽  
Elastic Regime ◽  
Strain Monitoring ◽  
High Performance Coating ◽  
Very High

Multilayered nanocomposites, known for its mechanical properties of very high flow strength, ultra-light weight and stable plastic flow to large strains, represent a class of novel composite nanomaterials in which there arises rare opportunities to design new materials from the ground up and to tailor their properties to suit exactly their performance requirements. These materials can withstand very high strains in the elastic regime without any inelastic relaxation due to plasticity or fracture compared to its bulk counterparts. This extended elastic regime opens up new possibilities for tuning the physical and chemical properties of materials as well as bringing novel functionalities, such as high performance coating materials with online strain monitoring capability. Our resistivity measurements during ex situ uniaxial micropillar compression in this article suggests basic feasibility of a Cu–Nb multilayered nanocomposite with 20 nm layer thickness having a novel functionality for online strain monitoring capability, in addition to its more known application as a high performance coating materials due to its extraordinary strength and deformability. A linear trend of resistivity with respect to true strain for strains in excess of 3.5% was observed and suggests a significant regime for use for strain sensor/detection/monitoring capability.

Cycloaliphatic Epoxide Based Sol-Gel Derived Materials

1994 ◽  
Vol 346 ◽  
Author(s):  
G. A. Sigel ◽  
R.C. Domszy ◽  
W. C. Welch
Keyword(s):  
High Performance ◽  
Sol Gel ◽  
Mechanical Analysis ◽  
Processing Conditions ◽  
Coating Materials ◽  
Uv Curable ◽  
Organic Hybrid ◽  
High Performance Coating ◽  
Gel Composition

ABSTRACTScratch resistant transparent organically modified sol-gel materials typically utilize organics as acrylates, or pre-polymer silicon or carbon backbone material. The use of diepoxide monomers within a sol-gel matrix has yet to be described as a means of obtaining high performance coating materials. This paper describes the preparation and characterization of UV curable inorganic-organic hybrid glass materials based on the incorporation of cycloaliphatic diepoxide monomers into a sol-gel composition of TEOS and the epoxide silane coupling agent glycidoxypropyl-trimethoxysilane. We report aging and humidity studies along with processing conditions that affect the silicate distribution and cationic cure of the diepoxide resin based on solution and solid state NMR experiments. Mechanical analysis of thin films prepared by varying processing conditions and length of the diepoxide backbone are also discussed.

High-Throughput Adhesion Evaluation and Scale-up of Combinatorial Leads of Organic Protective Coatings

2003 ◽  
Vol 804 ◽  
Author(s):  
Karin Ezbiansky ◽  
George Medford ◽  
Hariklia Reitz ◽  
Radislav A. Potyrailo ◽  
Bret J. Chisholm ◽  
...  
Keyword(s):  
High Throughput ◽  
High Performance ◽  
Protective Coatings ◽  
Scale Up ◽  
Performance Testing ◽  
Plastic Substrate ◽  
Automotive Applications ◽  
Coating Materials ◽  
End Use ◽  
High Performance Coating

ABSTRACTCoupling of combinatorial chemistry methods with high-throughput (HT) performance testing and measurements of resulting properties has provided a powerful set of tools for the 10-fold accelerated discovery of new high-performance coating materials for automotive applications. This approach replaces labor-intensive steps with automated systems for evaluation of adhesion of 8 × 6 arrays of coating elements that are discretely deposited on a single 9 × 12 cm plastic substrate. Performance of coatings is evaluated with respect to their resistance to adhesion loss. This parameter is one primary consideration in end-use automotive applications. Coating leads identified from the HT screening have been validated on the traditional scale. Details of these validation studies are discussed.

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