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Showing 1 to 11 of 11 for “"scratch resistance"”.
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Mineral-filled polypropylene: Improvement of scratch resistance
… to provide a material with enhanced scratch resistance. Several physical properties including Rockwell and Shore D hardness are investigated, and it is determined that Filler W improves scratch resistance. It is also determined that Filler T-filled-PP has poor scratch resistance even …
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Micro and nano composites composed of a polymer matrix and a metal disperse phase.
… Static and dynamic friction was measured. The scratch resistance of the specimens was determined. A study of the wear mechanisms in the samples was performed. The Al micro- and nanoparticles as well as Ni microparticles are well dispersed throughout the material while Ag micro and nanoparticles …
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Hypotheses for Scratch Behavior of Polymer Systems that Recover
Scratch recovery is a desirable property of many polymer systems. The reason why some materials have demonstrated excellent scratch recovery while others do not has been a mystery. Explaining the scratch resistance based upon the hardness of a material or its crosslink density is incorrect. In this …
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Characterization of mirco/nano mechanical and tribological properties of polymeric coatings deposited on steel
… by analyzing the hardness, elastic modulus, and scratch resistance of each coating. This was accomplished by making indentation and scratch tests on each sample with a nano-indenter and analyzing the results with a Scanning Probe Microscope (SPM). Results of indentation tests show that melamine, …
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The abrasive wear behaviour of mineral-filled polypropylene
… specific emphasis on the surface property of scratch resistance. The experimental work has covered the effect of polymer crystallinity, mineral fillers, and the nature of the abrasive counterface on the wear behaviour of polypropylene. The wear behaviours of polymethylmethacrylate, …
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Studying scratching/buffing mechanism of the clearcoats and improving the technique and devices/materials in automobile refinish work
… The new coatings possess much stronger mar/scratch resistance either with raised elastic modulus and hardness or with the ability of self-healing. These pose new challenges to the auto-body refinish work. In the refinishing process, the after-market coatings are applied to the bodies …
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Effect of silicon nano particles added to the polymeric coatings
… of elasticity and hardness at each depth. The scratch width produced under the same applied force was higher in the coating sample without nano silica. Similarly, the real scratch depth and the residual effect of the forces applied on the coating sample with added nano silica were lower. These …
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Highly Tough, Stiff, and Transparent Poly(Methyl Methacrylate) Composites Incorporating Thermoplastic Elastomer Nanofibrils
… rheology, glass transition temperature, scratch resistance, creep behavior, and mechanical recyclability, were investigated. It is found that the inclusion of only 3 weight percent (wt%) of high aspect ratio nanofibrils of thermoplastic elastomers can induce a brittle-to-ductile …
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Altering an Epoxy-Amine Thermoset's Performance Through Varying Mix Ratios
… space, to paints and coatings that require high scratch resistance and mechanical durability, to medical devices, designed to be in continuous contact with biological fluids. Commercial epoxy products come with manufacturer’s information explaining the epoxy properties and recommended preparation …
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Powder/Sol-enhanced Au–Ni Electroplated Composite Coatings: Structures, Properties and Mechanisms
… jewelry. However, the low hardness and poor wear resistance of the coatings have largely shortened their service life and limited their applications. This project is based on sol-enhanced nano-composite coating technology, which is a novel technique recently developed in our group. Highly …
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Dynamic and quasi-static contact and scratch analysis of micro-nanoscale thin solid films with application to magnetic storage hard disk drives
… which can provide the required contact and scratch resistance. To aid this endeavor, scientific studies of the contact and scratch processes in these systems, both static and dynamic are needed to provide the tools necessary to help the advancement of these technologies. One such problem is …