3 edition of Contact angle and surface tension measurements of a five-ring polyphenyl ether found in the catalog.
Contact angle and surface tension measurements of a five-ring polyphenyl ether
|Statement||William R. Jones, Jr. ; prepared for the 1985 Annual Meeting of the American Society of Lubrication Engineers, Las Vegas, Nevada, May 6-9, 1985|
|Series||NASA technical memorandum -- 86927|
|Contributions||Lewis Research Center|
|The Physical Object|
Surface Treatment of Materials for Adhesion Bonding. A unique compilation of surface preparation principles and techniques for plastics, thermosets, elastomers and metals bonding, this book illustrates surface preparations and operations that must be applied to a surface before adhesive bonding. no author cited, “ASTM D Standard test method for measurement of the surface tension of solid coatings, substrates and pigments using contact angle measurements,” ASTM, no author cited, “ASTM D Standard practice for estimating critical surface .
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Preface to the Second Edition The ﬁrst edition of this book appeared 10 years ago. This book is the result of teaching in the Applied Chemistry (Dr. H.D. Gesser, the Chemistry 2. SKF lubrication products and systems SKF USA Inc. Kulpsville, PA , USA () Polyphenyl- ether Mineral oil / PAO Ester Polyglycol Silicone: methyl Silicone: phenyl Polyphenylether PFPE Angle connection 45° Angle connection 90° Brush 30 × 40 mm Brush 30 × 60 mm Brush 30 × mm Elevator brush, 5 –
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Contact angle measurements were performed for a five-ring polyphenyl ether isomeric mixture on M steel in a dry nitrogen atmosphere.
Two different techniques were used: (1) a tilting-plate apparatus, and (2) a sessile drop apparatus. Measurements were made for the temperature range 25 to ° by: 5. Get this from a library.
Contact angle and surface tension measurements of a five-ring polyphenyl ether. [William R Jones; Lewis Research Center.]. Contact angle measurements were performed for a five-ring polyphenyl ether isomeric mixture on M steel in a dry nitrogen atmosphere.
Two different techniques were used: (1) a tilting plate apparatus, and (2) a sessile drop : Jr. Jones. Contact angle measurements were performed for a five-ring polyphenyl ether isomeric mixture on M steel in a dry nitrogen atmosphere.
Two different techniques were used: (1) a tilting plate apparatus, and (2) a sessile drop apparatus. CONTACT ANGLE AND SURFACE TENSION MEASUREMENTS OF A FIVE-RING POLYPHENYL ETHER William R.
Jones, Jr. National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio r C is ABSTRACT Contact angle measurements were performed for a five-ring polyphenyl ether isomeric mixture on H steel in a dry nitrogen atmosphere.
Two. A S L E Transactions. Search in: Advanced search. New content alerts RSS. Subscribe Contact Angle and Surface Tension Measurements of a Five-Ring Polyphenyl Ether. Willlam R. Jones Jr. Pages: Published online: 25 Mar Contact Angle and Surface Tension Measurements of a Five-Ring Polyphenyl Ether.
A S L E Transactions29 (2), DOI: / Jan Rayss. Phase transitions in the monomolecular film of N-octadecanol on silica gel surface. Contact angle measurements were performed for a five-ring polyphenyl ether isomeric mixture on M steel in a dry nitrogen atmosphere.
The general specifications for the bearing are ID 85 mm OD mm H Bearing width 28 mm Ball diameter 13/16 inch m Contact angle 25 degrees H Roll curvature 52 percent Number of balls 15 Typical pressure traces are given in Figures 9 and 10 for tests with two lubricants: a mineral oil and a polyphenyl ether.
Alspach, P. Hell and D.J. Miller (Eds.) In recent years, there has been an explosion of interest in the science of adhesion. Despite its multidisciplinary and undoubtedly industrial character, the wealth of phenomena to be found in the study of adhesion has drawn researchers from many seemingly disparate scientific disciplines.
Properties of PFPE fluids17 Property Average molecular weight Kinetic viscosity at 20, cS Viscosity index Pour point, Density at 20, g m Surface tension at 20, dyne cm-1 Vapour pressure, torr: At 20 At Fluid Demnum Fomblin Krytox $ Z25 11 + 25 2 -- 19 25 19 5 x A differential-maximum-bubble-pressure apparatus was used to determine the surface tension of liquid lubricants to ' C in air.
These lubricants included polyphenyl ethers, mineral oils, a. synthetic paraffin, a silicone, and a polyether. A polyphenyl ether exhibited the highest surface tension ( In general, the wettability of a surface can be characterized by the contact angle (CA).
Multifuntional surfaces with special wettability have attracted a lot of interest in both fundamental research and industry applications over the last two decades [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15].The surface with a water droplet CA less than 90° and above 90° is commonly defined as hydrophilic and.
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The application of liquid lubricants in the space environment presents unique challenges. This report reviews the state of the art of liquid lubrication in space as well as the problems and their solutions.
A focus module containing a boundary element and a focus element. The focus element includes a fluid and a deformable membrane, with the fluid being entrapped between the boundary element and the deformable membrane. The focus module also includes a pressure element, which is capable of deforming the focus element by pressing on the deformable membrane in the direction of the.
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For instance, considering a supercooled liquid nucleating on top of an ideal planar surface offered by the foreign phase, we obtain the so-called Young’s relation where θ is the contact angle, namely, a measure of the extent to which the crystalline nucleus wets the foreign surface.
Thus, the contact angle determines whether and how much it. Polymer degradation is a change in the properties—tensile strength, color, shape, etc.—of a polymer or polymer-based product under the influence of one or more environmental factors such as heat, light or chemicals such as acids, alkalis and some changes are usually undesirable, such as cracking and chemical disintegration of products or, more rarely, desirable, as in.Enabling Your Technology Contct s toEBy • 5 Critical surface Tension and adhesion While the contact angle of water on a substrate is a good indicator.For example, the contact angle defined in Fig.
2 influences fatigue life and the temperatures developed during bearing operation. Spherical balls enclosed between two concentric rings permit the rings to rotate relative to each other, whilst supporting a radial load; this is the essence of a ball bearing.