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  • Is Moisture Absorption A Problem With Composite Bearings?
    of moisture absorption is not a problem for the Polygon family of PolyLube TM composite bearings. When PolyLube bearings are tested in a complete immersion chamber, their 2-hour water absorption is 0.12%; when the test is extended to 24 hours the water absorption is 0.16%. This stands in stark contrast
  • Solvent Choices for Infrared Testing of Oil and Grease in Water
    Water is a very strong absorber in the mid infrared (IR) region where oil is measured. We see the effect of infrared absorbance when a cold bucket of water is left in the sun is quite warm by afternoon due to the absorption of infrared energy as heat. When measuring part per million (ppm) oil
  • Measuring and removing dissolved and colloidal silica in ultrapure water
    Johanes Wibowo and Farhang Shadman, Most semiconductors are made by chemically processing the surface of a single crystal of silicon. Between each manufacturing stage, chemicals used in the previous stage must be rinsed from the wafer surface with ultrapure (UP) water. As a silicon wafer
  • Technical Background: Infrared Properties of Selected Materials (.pdf)
    This article covers the Absorption spectrum of water, Absorption of Polyethylene, Absorption of Highly Polished Mild Steel, Aluminium and more...
  • New Method for Water Vapor Permeability Testing of Medicine Package
    Abstract: this article briefs on testing principle of water vapor permeability testing of electrolytic analysis method and its application in the testing of medicine package materials. Moisture is the medium of chemical reaction. Absorption of moisture will result in changes of medicine
  • Preparation of Paper Coatings
    Paper coatings impart a variety of properties, both decorative (whiteness, opacity etc.) and functional (smoothness, absorption rate etc.) A typical coating has two principal constituents: a dispersion of pigments in water and an adhesive or binder. Traditionally coatings were based on clays
  • Electrical Insulators and Dielectric Materials
    in order to have sufficient resistance to thermal shock. The porosity must be very low. The surface vitrification must be perfect to avoid water absorption and improve mechanical resistance. The most commonly used materials are porcelains, mainly ternary compounds (Al2O3-SiO2-MgO). Such insulators
  • Rapid parts for the long haul
    parts. Water absorption of Prototherm 12120 parts after UV postcure or UV plus thermal postcure at room temperature for up to one year. Stereolithography (SL) remains one of the most widely used ways of rapidly prototyping complex parts. SL can build prototypes with high accuracy and a wider range

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