Study on Scratch-Resistance and Abrasion-Resistance of Water-Based Varnish

2011 ◽  
Vol 380 ◽  
pp. 24-28
Author(s):  
De Ping Zhao ◽  
Jiang Hao Liu ◽  
Bei Qing Huang ◽  
Xian Fu Wei
Keyword(s):  
Abrasion Resistance ◽  
Great Influence ◽  
Scratch Resistance ◽  
Water Based

To improve scratch-resistance and abrasion-resistance of water-based varnish, change the type of water-based resin, the type and content of wax emulsion and flow agent, then test scratch-resistance and abrasion-resistance of water-based varnish. The results show that resin and wax emulsion has a great influence on the scratch-resistance and abrasion-resistance of water-based varnish. Adding appropriate amount of wax emulsion can improve scratch-resistance and abrasion-resistance to some extent. Adding flow agent has certain influence on scratch-resistance of water-based varnish.

scholarly journals REVEALING THE ABRASION RESISTANCE OF META-STABLE TITANIUM ALLOYS USING MULTI-PASS DUAL-INDENTER TESTS

2021 ◽  
Vol 55 (3) ◽  
Author(s):  
Hui Xiao ◽  
Can Huang ◽  
Jian Chen ◽  
Cong Li
Keyword(s):  
Abrasion Resistance ◽  
Failure Mechanisms ◽  
Great Influence ◽  
Surface Hardness ◽  
Scratch Resistance ◽  
Phase Morphology ◽  
Sliding Contact ◽  
Initial Surface ◽  
Loading Conditions ◽  
Scratch Tests

The abrasion resistance of the Ti-5Al-4Zr-4Mo-2Cr-2Sn-1Fe alloy was investigated using multi-pass dual-indenter (MPDI) scratch tests with different loading conditions under a repetitive local sliding contact. Various microstructures were obtained with different heat treatments. The effect of the phase morphology on the scratch resistance and corresponding failure mechanisms were revealed. Results show that the phase morphology has a great influence on the scratch resistance and that the effect is contact-load dependent. The scratch behaviour is linked to the initial surface hardness at low loading conditions, while the work-hardening ability is more relevant at high loading conditions.

Influence of Ink Fineness on the Performance of Water-Based Cork Paper Bobbin Gravure Ink

2011 ◽  
Vol 380 ◽  
pp. 40-43 ◽  
Author(s):  
Mao Jie Yu ◽  
Bei Qing Huang ◽  
Xian Fu Wei ◽  
Yu Bin Lv
Keyword(s):  
Abrasion Resistance ◽  
Great Influence ◽  
Low Viscosity ◽  
Printing Quality ◽  
Water Based

To survey the influence of ink fineness on the performance of the water-based cork paper bobbin gravure ink and improve the printing quality of ink, the water-based cork paper bobbin gravure inks with different pigment fineness were prepared and the viscosity of ink, glossiness of the printing proof, the abrasion resistance of ink film and other property parameters were tested. The research shows that the ink fineness has a great influence on the water-based cork paper bobbin gravure ink. If the ink fineness is bad, the ink would have a low viscosity. If the ink fineness is good, the glossiness of the printing proof and the abrasion resistance of ink film would be high.

scholarly journals Comparison of Mechanical and End-Use Properties of Grey and Dyed Cellulose and Cellulose/Protein Woven Fabrics

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2860
Author(s):  
Eglė Kumpikaitė ◽  
Sandra Varnaitė-Žuravliova ◽  
Indrė Tautkutė-Stankuvienė ◽  
Ginta Laureckienė
Keyword(s):  
Abrasion Resistance ◽  
Great Influence ◽  
Woven Fabrics ◽  
Artificial Light ◽  
Colour Properties ◽  
Breaking Force ◽  
Elongation At Break ◽  
Area Density ◽  
Mechanical Breaking ◽  
End Use

The behaviour of textile products made from different fibres during finishing has been investigated by many scientists, but these investigations have usually been performed with cotton or synthetic yarns and fabrics. However, the properties of raw materials such as linen and hemp (other cellulose fibres) and linen/silk (cellulose/protein fibres) have rarely been investigated. The aim of the study was to investigate and compare the mechanical (breaking force and elongation at break) and end-use (colour fastness to artificial light, area density, and abrasion resistance) properties of cellulose and cellulose/protein woven fabrics. For all fabrics, ΔE was smaller than three, which is generally imperceptible to the human eye. Flax demonstrated the best dyeability, and hemp demonstrated the poorest dyeability, comparing all the tested fabrics. The colour properties of fabrics were greatly influenced by the washing procedure, and even different fabric components of different weaves lost their colours in different ways. Flax fibres were more crystalline than hemp, and those fibres were more amorphous, which decreased the crystallinity index of flax in flax/silk blended fabric. Unwashed flax fabric was more resistant to artificial light than flax/silk or hemp fabrics. Finishing had a great influence on the abrasion resistance of fabrics. The yarn fibre composition and the finishing process for fabrics both influenced the mechanical (breaking force and elongation at break) and end-use (area density and abrasion resistance) properties of grey and finished fabrics woven from yarns made of different fibres.

scholarly journals The influence of surface finishing of Paulownia Siebold et Zucc. on the mechanical properties of lacquered surface

2010 ◽  
pp. 7-23
Author(s):  
Milan Jaic ◽  
Jovan Dobic ◽  
Tanja Palija
Keyword(s):  
Mechanical Properties ◽  
Abrasion Resistance ◽  
Scratch Resistance ◽  
Surface Finishing ◽  
Coating Application ◽  
Acrylic Coating ◽  
Acrylic Coatings ◽  
Paulownia Fortunei ◽  
Free Falling ◽  
Paulownia Elongata

This paper presents the research of influence of sanding, staining and the use of polyurethane and acrylic coating on the adhesion, scratch resistance and abrasion resistance of the coating. Objective was to determine the most important mechanical properties of lacquered surfaces, considering the application of Paulownia elongata and Paulownia fortunei, by using different systems of surface finishing. Cross cut method was used for measurement of adhesion. More accurate view of coating adhesion was obtained by measuring the scratch resistance. Abrasion resistance was tested by the method of free falling of abrasive particles. The applied system of sanding had no effect on the examined mechanical properties. Stained samples lacquered with PU coating showed better adhesion to the non-stained samples. Impact of staining on scratch resistance is not established. Stained samples showed greater resistance to abrasion for both wood species. Samples lacquered with PU coating showed the higher values of mechanical properties compared with samples lacquered with UV acrylic coating. Application of PU coating for surface finishing of Paulownia elongata and Paulownia fortunei is more adequate than the application of UV acrylic coatings, from the point of scratch resistance and abrasion resistance.

scholarly journals The impact of the top coating on the mechanical properties of lacquered wood surfaces

2012 ◽  
pp. 87-100
Author(s):  
Milan Jaic ◽  
Tanja Palija
Keyword(s):  
Mechanical Properties ◽  
Wood Species ◽  
Abrasion Resistance ◽  
Direct Contact ◽  
Quercus Robur ◽  
Scratch Resistance ◽  
Indentation Hardness ◽  
Polyurethane Coating ◽  
The Impact ◽  
Wood Surfaces

This paper investigates the impact of the top coating on the basic mechanical properties of a lacquered surface, including indentation hardness, scratch resistance and abrasion resistance. Three types of the top coating were used, including a 2K polyurethane coating, a 2K acrylate-isocyanate coating and a 2K alkyd-urethane coating. Samples of two wood species, spruce (Picea abies Karst.) and oak (Quercus robur L.), were used in this study, in order to determine whether the wood species, which is not in direct contact with the top coating, has an impact on the mechanical properties of a lacquered surface. The samples coated with a 2K acrylate-isocyanate coating showed the highest values of indentation hardness, in the samples of both wood species (1.34 N for spruce; 1.4 N for oak). The samples coated with a 2K alkyd-urethane coating showed the highest values of scratch resistance (20 N for both wood species) and abrasion resistance (mass loss of 480 mg after 700 cycles for both wood species). The results have shown that the wood species does not affect the value of indentation hardness, scratch resistance and abrasion resistance of a lacquered surface.

scholarly journals Preparation and Self-Repairing Properties of MF-Coated Shellac Water-Based Microcapsules

Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 778 ◽  
Author(s):  
Yijuan Chang ◽  
Xiaoxing Yan
Keyword(s):  
Orthogonal Experiment ◽  
Paint Film ◽  
Great Influence ◽  
Color Difference ◽  
Core Material ◽  
Wall Material ◽  
Formaldehyde Resin ◽  
Stirring Rate ◽  
Water Based ◽  
Four Levels

A self-repairing microcapsule was prepared by emulsion polymerization using melamine formaldehyde resin (MF) as wall material, and a mixture of shellac solution and water-based coating as core material. The orthogonal experiment was carried out through five factors and four levels. The effects of Wcore:Wwall, Wemulsifier:Wcore, stirring rate, Wshellac:Wcoating, Wemulsifier solution:Wcore on the output and coverage rate of microcapsules were studied. The stirring rate has a great influence on the preparation process of the MF-coated shellac water-based microcapsules. When the Wcore:Wwall is 0.8:1, Wemulsifier:Wcore is 3:100, stirring rate is 600 rpm, Wshellac:Wcoating is 1:1, Wemulsifier solution:Wcore is 9:1, the prepared microcapsules have the best shape and size. With the increase in concentration of microcapsules, the color difference and gloss of paint film decreased gradually. The tensile strength, scanning electron microscopy (SEM), infrared spectroscopy and repair effects of the paint film were analyzed. When the concentration of microcapsules was 5.0–10.0%, the comprehensive performance of the paint film was better, providing a technical reference for the self-repairing coatings.

Surface modification of nano-alumina and its application in preparing polyacrylate water-based wood coating

2013 ◽  
Vol 33 (8) ◽  
pp. 767-774 ◽  
Author(s):  
Ling Long ◽  
Jianfeng Xu ◽  
Xianglong Wan ◽  
Lei Qian
Keyword(s):  
Surface Modification ◽  
Abrasion Resistance ◽  
High Performance ◽  
Ionic Surfactant ◽  
Coating Film ◽  
Wood Coating ◽  
Nano Alumina ◽  
Water Based ◽  
Mixing Method ◽  
Modified Surface

Abstract In order to solve weakness, undesirable abrasion resistance, and hardness of a water-based wood coating film, modified surface nano-alumina was made in the water-based wood coating. The effect of surfactant type and amount on the performance of nano-alumina slurry was investigated. How the performance of the polyacrylate wood coating was affected by the size, amount, and mixing method of nano slurry was studied, as well as the characterization of nano-alumina slurry and modified polyacrylate wood coating. The results showed that, by compounding the non-ionic surfactant polyoxyethylene octylphenol ether (OPEO) and anionic surfactant sodium polyacrylate of surface modification of nano-alumina, the nano-alumina slurry had excellent performance and good stability when the amount of nano-alumina was 0.6 wt% and 3.2 wt%, respectively. When 1.5 wt% of nano slurry was mixed with the water-based polyacrylate emulsion to a hybrid during the pre-emulsification phase, the wood coating film had high performance, and good abrasion resistance and hardness.

scholarly journals Effect of Wood Preservatives on Surface Properties of Coated Wood

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Turgay Ozdemir ◽  
Ali Temiz ◽  
Ismail Aydin
Keyword(s):  
Surface Roughness ◽  
Adhesion Strength ◽  
Abrasion Resistance ◽  
Castanea Sativa ◽  
Scratch Resistance ◽  
Surface Finishing ◽  
Wood Preservatives ◽  
Oriental Beech ◽  
Dry Film Thickness ◽  
Dry Film

Effect of wood preservatives (waterborne and organicborne) on the performance of surface finishing properties is investigated. Sapwood of scots pine, (Pinus sylvestrisL.), oriental beech (Fagus orientalisLipsky), and chestnut (Castanea sativaMill.) specimens (300 × 100 × 15 mm along the grain) were impregnated with aqueous solution of 2% CCA, 2% Tanalith E, 1% boric acid, and Immersol aqua. Surface roughness, dry film thickness, adhesion strength, gloss measurement, scratch, and abrasion resistance were determined according to related standards for treated and untreated samples. The results indicated that surface roughness and adhesion strength depended on wood species and the chemical composition of preservatives. Generally, waterborne wood preservatives increased the surface roughness of wood while the organic-based wood preservatives decreased it. The organic-based wood preservatives decreased adhesion but they increased gloss value. Wood preservatives did not affect the scratch resistance which was found to depend on properties of the coating. All the wood preservatives increased abrasion resistance.

scholarly journals Preparation of CNF/PDMS Superhydrophobic Coatings with Good Abrasion Resistance Using a One-Step Spray Method

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5380
Author(s):  
Jingda Huang ◽  
Peihao Cai ◽  
Mengmeng Li ◽  
Qiang Wu ◽  
Qian Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Abrasion Resistance ◽  
Substrate Surface ◽  
Cellulose Nanofibers ◽  
Scratch Resistance ◽  
Water Contact ◽  
Preparation Methods ◽  
Superhydrophobic Coatings ◽  
Spray Method ◽  
Complex Preparation

Complex preparation methods and weak mechanical properties of superhydrophobic coatings hinder their applicability. To address these problems, cellulose nanofibers (CNFs) were used as structural materials to augment the roughness properties, while polydimethylsiloxane (PDMS) was used as the adhesive. Based on the results of previous studies, superhydrophobic coatings with good mechanical properties can be prepared by spraying the mixture onto a substrate surface; herein, the mixture comprised modified CNFs and PDMS. The resulting coating possessed excellent superhydrophobicity, which allowed a maximum water contact angle (WCA) of 158°. Furthermore, it exhibited great knife-scratch-resistance properties and good abrasion performance, which was evaluated by abrading with 800-grit sandpaper for 19 cycles (abrasion length of 380 cm) under a 100 g load. Based on the simple operation and abrasion resistance, the coating shows great potential for practical application.

Hardness and Abrasion Resistance of Nanocrystalline Nickel Alloys Near the Hall-Petch Breakdown Regime

2002 ◽  
Vol 740 ◽  
Author(s):  
Christopher A. Schuh ◽  
T. G. Nieh
Keyword(s):  
Solid Solution ◽  
Abrasion Resistance ◽  
Nickel Alloys ◽  
Scratch Resistance ◽  
Scientific Interest ◽  
Nanocrystalline Nickel ◽  
Grain Sizes ◽  
Structural Applications ◽  
Nickel Tungsten

ABSTRACTThe breakdown of classical Hall-Petch scaling remains an area of scientific interest, and will govern the limiting strength of nanocrystalline alloys for structural applications. In this work we discuss the hardness and scratch resistance of nanocrystalline nickel and nickel-tungsten solid solution alloys, assessed through nanoindentation and nano-scratch techniques. The materials have been prepared by electrodeposition, and are fully dense with grain sizes between 6 and 22 nm. In this range of grain sizes, there is some evidence for a breakdown of Hall-Petch scaling, reflected in both the hardness and abrasion data. The role of solid solution alloying on this breakdown is also discussed.

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