A Study on the Properties of Water-Based Woodenware Nanocoating

2010 ◽  
Vol 168-170 ◽  
pp. 2139-2142
Author(s):  
Tien Li Chen ◽  
Ho Chang ◽  
Wei Hao Wong
Keyword(s):  
Acrylic Resin ◽  
Water Soluble ◽  
Polyurethane Coating ◽  
Specific Concentration ◽  
Resin Coating ◽  
Water Based

This study adds nanopowder, such as ZnO and TiO2, in different concentrations to water-based woodenware coating, and explores the properties of the coating on the woodenwares. After the coating has been applied to the testing materials, the thickness and lightness are measured. These values are compared to the properties of the water-based woodenware coating with nanopowder of specific concentration, such as hardness, lightness and adhesion. According to the results of the experiments, adding TiO2 nanopowder to the AE-418 water-soluble polyurethane coating helps to increase the hardness of the coating. The amount added is positively related to the hardness of the coating; the result is the opposite with the WP-1715 water-soluble acrylic resin coating. After adding powder such as TiO2 or ZnO to the AE-418 water-soluble polyurethane coating, the lightness of the coating becomes lower. However, powder with higher concentration leads to higher lightness. In addition, the adhesion of the coating is stronger when nanopowder of higher concentration is added.

Study on Preparation and Property of Acrylic Resins Used for Water-Based Ink

2012 ◽  
Vol 262 ◽  
pp. 491-496 ◽  
Author(s):  
Wen Tao Huang ◽  
Guang Xue Chen ◽  
Bao Ling Tang ◽  
Ming Guang Yu
Keyword(s):  
Acrylic Resin ◽  
Ammonium Persulfate ◽  
Solid Content ◽  
Water Soluble ◽  
Acrylic Emulsion ◽  
Low Viscosity ◽  
Acrylic Resins ◽  
Film Forming ◽  
Water Based ◽  
Relationship Of

In this paper, a kind of water-soluble acrylic emulsion with methyl methacrylate (MMA) and butyl acrylate (BA) as hard and soft monomer respectively, acrylic acid (AA) and hydroxypropyl methacrylate as functional monomers, ammonium persulfate (APS) and ammonia as initiator and neutralizer respectively, was prepared by emulsion polymerization. The resulting emulsion possesses high solid content, low viscosity, high stability and film-forming properties, indicating that it would be applicable to water-based ink. The effect of the ratio of MMA to BA on the film-forming properties of resin and the influence of AA and HPA on the water-soluble property and viscosity of resin were investigated, and the relationship of reaction temperature and the emulsion stability was also studied. This paper can provides a certain reference to synthesis of acrylic resin and application of acrylic resin to the water-based ink.

Psyllium husk performance in drilling fluid at elevated temperature and pressure conditions

2018 ◽  
Vol 58 (1) ◽  
pp. 112
Author(s):  
Son Ly ◽  
Xiao Yu ◽  
Xinsong Zhang ◽  
Alireza Salmachi
Keyword(s):  
High Performance ◽  
Elevated Temperatures ◽  
Performance Enhancement ◽  
Drilling Fluid ◽  
Filter Press ◽  
Water Soluble ◽  
Natural Polymers ◽  
Psyllium Husk ◽  
Water Based ◽  
Temperature And Pressure

High performance water-based drilling fluid alternatives that meet performance objectives with minimal environmental impact must continually be developed. Drilling fluid performance is dependent on fluid characteristics, and among those most critical are viscosity and filtration. One avenue to improve drilling fluid performance is through enhancement by use of potent, water-soluble natural polymers. Psyllium husk powder is an environmentally friendly natural polymer derived from ground-up surfaces of psyllium seeds (Plantago ovata). When in contact with water, psyllium husk powder forms a gel-like, extraordinarily viscous substance at very low concentrations. It was previously shown that pure psyllium husk is an excellent viscosity and filtration agent for water-based drilling fluid under standard conditions. Psyllium husk can also be used as a clay-extender to enhance viscosity and filtration performance of bentonite mud; however, further laboratory testing of this performance enhancement under elevated temperatures and pressures is required. Extensive laboratory experiments were therefore conducted to test husk performance in bentonite mud under such conditions. An electronic rheometer and a temperature and pressure adjustable API filter press were used to evaluate viscoelastic and filtration mud characteristics respectively. Concentrations of 0.05–0.4% husk with 5% bentonite were tested at 25−120°C under 1500 psi. An optimal husk concentration of 0.1% was determined, increasing bentonite viscosity and yield point by up to 46.9% and 68.1% respectively. Filtrate loss rate and filtration cake thickness were reduced by up to 25.8% and 35.3% respectively. The optimal concentration was useable up to 70°C (~2800 m) before deflocculating was required.

Study of the corrosion protection efficiency of polypyrrole/metal oxide nanocomposites as additives in anticorrosion coating

2020 ◽  
Vol 67 (3) ◽  
pp. 305-312 ◽  
Author(s):  
R. Rajkumar ◽  
C. Vedhi
Keyword(s):  
Metal Oxide ◽  
Mild Steel ◽  
Corrosion Protection ◽  
Metal Oxide Nanoparticles ◽  
Acrylic Resin ◽  
Polymerization Process ◽  
Oxide Nanoparticles ◽  
Protection Efficiency ◽  
Content Type ◽  
Resin Coating

Purpose Polypyrrole (PPy) and PPy/metal oxide nanocomposites were synthesized by oxidative polymerization process, and its corrosion protection ability was studied by immersion test and electrochemical corrosion studies in 1 per cent HCl and 3.5 per cent NaCl solution. Design/methodology/approach The prepared composites were loaded in acrylic resin and subsequently coated on a mild steel surface. The characterization of the polymer composites using FT-IR, UV-vis, XRD and FE-SEM with EDS analysis confirmed the interaction between PPy and metal oxide nanoparticles. The PPy nanoparticles were less protected on the mild steel, but the nanocomposite coating with metal oxide nanoparticles dramatically increased the corrosion resistance. Findings According to the corrosion protection ability of the coating, it was demonstrated that the acrylic resin coating composed of PPy/metal oxide nanocomposites was highly efficient in protecting the mild steel compared to the PPy nanoparticles. The highest protection efficiency was obtained by PPy/TiO2 nanocomposites with acrylic resin coating. Originality/value To the best of the authors’ knowledge, this paper consists of original, unpublished work which is not under consideration for publication elsewhere and that all the co-authors have approved the contents of this manuscript and submission.

scholarly journals Preparation of 1, 3, 6, 8-Pyrenesulfonic Acid Tetrasodium Salt Dye-Doped Silica Nanoparticles and Their Application in Water-Based Anti-Counterfeit Ink

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4074
Author(s):  
Liyong Jiao ◽  
Mengnan Zhang ◽  
Houbin Li
Keyword(s):  
Silica Nanoparticles ◽  
Fluorescence Emission ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Heat Stability ◽  
Cationic Polyelectrolyte ◽  
Water Soluble ◽  
Fluorescence Emission Spectra ◽  
Water Based ◽  
Waterborne Emulsion

In order to improve the luminescent stability of water-based anti-counterfeit ink, a new fluorescent material is prepared by doping dye into silica nanoparticles. Water soluble anionic dye 1, 3, 6, 8-pyrenesulfonic acid sodium salt (PTSA) is selected as the dopant. In this work, PTSA is successfully trapped into silica nanoparticles (SiNPs) by the reverse microemulsion method using cationic polyelectrolyte poly (dimethyl diallyl ammonium chloride; PDADMAC) as a bridge. The UV absorption spectra, fluorescence emission spectra and fluorescent decay curves are used to describe the luminescent properties of the PTSA-doped silica nanoparticles (PTSA-SiNPs). In addition, the as-prepared PTSA-SiNPs and polyurethane waterborne emulsion are used to prepare water-based anti-counterfeit ink, and fluorescent patterns are successfully printed through screen-printing. The samples printed by the ink exhibit desirable fluorescence properties, heat stability, robust photostability, and a fluorescent anti-counterfeit effect, which makes the PTSA-SiNPs promising luminescent materials for anti-counterfeit applications.

scholarly journals Programming function into mechanical forms by directed assembly of silk bulk materials

2016 ◽  
Vol 114 (3) ◽  
pp. 451-456 ◽  
Author(s):  
Benedetto Marelli ◽  
Nereus Patel ◽  
Thomas Duggan ◽  
Giovanni Perotto ◽  
Elijah Shirman ◽  
...  
Keyword(s):  
Self Assembly ◽  
Biological Function ◽  
Bulk Material ◽  
Directed Assembly ◽  
Water Soluble ◽  
Infrared Light ◽  
Bulk Materials ◽  
Protein Matrix ◽  
On Demand ◽  
Water Based

We report simple, water-based fabrication methods based on protein self-assembly to generate 3D silk fibroin bulk materials that can be easily hybridized with water-soluble molecules to obtain multiple solid formats with predesigned functions. Controlling self-assembly leads to robust, machinable formats that exhibit thermoplastic behavior consenting material reshaping at the nanoscale, microscale, and macroscale. We illustrate the versatility of the approach by realizing demonstrator devices where large silk monoliths can be generated, polished, and reshaped into functional mechanical components that can be nanopatterned, embed optical function, heated on demand in response to infrared light, or can visualize mechanical failure through colorimetric chemistries embedded in the assembled (bulk) protein matrix. Finally, we show an enzyme-loaded solid mechanical part, illustrating the ability to incorporate biological function within the bulk material with possible utility for sustained release in robust, programmably shapeable mechanical formats.

Preparation and Electrical Properties of Multilayer Zinc Oxide Varistor by Gelcasting

2014 ◽  
Vol 852 ◽  
pp. 285-290
Author(s):  
Mao Yan Fan ◽  
Li Fang Zhang ◽  
Hong Xiao ◽  
Tian Tian Xie
Keyword(s):  
Electrical Properties ◽  
Tape Casting ◽  
Optimum Concentration ◽  
Water Soluble ◽  
Solid Loading ◽  
High Solid Loading ◽  
Water Based ◽  
Zno Varistors ◽  
Zinc Oxide Varistor ◽  
Positive Effect

Multilayer ZnO varistors were prepared by aqueous gel tape casting with water-soluble acrylamide as binder. 0.8wt% PAA dispersant was found to be the optimum concentration needed to prepare stable slurry. Plasticizer glycerol has a positive effect on the fluidity of the suspension and oxygen anti-polymerizing inhibitor PEG 2000 deteriorated the fluidity. The addition of 15wt. % PEG2000 eliminates the surface exfoliation absolutely due to the oxygenation of ether units. The solid loading of the slurry was about 71wt% compared to the custom acrylic formulation binder 60wt%. The multilayer ZnO varistors prepared by aqueous gel tape casting display comparable good electrical properties to those prepared by water-based tape casting using custom acrylic formulation binder which is attributed to the high solid loading of slurry.

Tribological Properties and Worn Surface Analysis Generated by Sulfur- and Phosphorus-Free Molybdenum-Containing Water-Based Lubricant

2012 ◽  
Vol 591-593 ◽  
pp. 1054-1057 ◽  
Author(s):  
Li Li Yan ◽  
Cheng Biao Wang ◽  
Wen Yue ◽  
Bo Xu
Keyword(s):  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Environmental Concern ◽  
Nitrogen Compound ◽  
Water Soluble ◽  
Environment Friendly ◽  
Water Based ◽  
Modern Manufacturing ◽  
Worn Surface ◽  
Reducing Properties

The development of environment-friendly water-based lubricants has been paid more and more attention in modern manufacturing due to environmental concern and human health. In this paper, several water-soluble molybdenum-containing additives (WMCAs) were synthesized, and characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The tribological properties of WMCAs in water were evaluated by a four-ball tester. The results indicated that WMCAs exhibited beneficial effect on the anti-wear and friction-reducing properties of water under all tested concentrations, which could be attributed to organic nitrogen compound, iron oxides and MoO3 in WMCAs tribofilm.

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