ASTM D(). Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers. standard by ASTM International. Find the most up-to-date version of ASTM D at Engineering ASTM D – 97(). Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers. This standard is a part of ASTM Book of Standards.
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You currently cannot view this content. Are you sure you want to empty the cart? For triols initiated with glycerin and trimethylol propane, an uncorrected EO value is obtained since both initiators have protons that contribute to the EO measurement. This test method is not applicable to amine-based polyols. News View our resource asfm to find press releases, testimonies, infographics and more.
ASTM D Standard Test Method for Isocyanate Groups in Urethane – Google Books
Criteria for building, evaluating, and validating the NIR calibration asstm are also described. This test method is applicable to polyether polyols and polyether polyol blends that are used in urethane reactions. Standard Practice for Polyurethane Raw Materials: Both of these compounds react with alcohols and water, forming ureas, carbamates, carbon dioxide, and hydrochloric acid.
The values stated in SI units are to be regarded as the standard. This test method is applicable to polyacetals, temperature sensitive materials, high solids polymer polyols, and rigid polyols.
Both procedures are applicable to a variety of organic compounds but the amount of sample used may have to be varied. A blog of the American Chemistry Council: This alkalinity is often expressed as CPR controlled polymerization rate of polyether polyols.
It is suitable for diols made from the commonly used initators and asstm EO percentages greater than or equal to six. Procedures for sample handling, data gathering and evaluation are included. Enter your personal account email address to request a password reset: It is applicable only to materials whose color-producing bodies have light-absorption characteristics similar to those of the standards used.
Remember me for one month. The dynamic viscosity can be obtained by multiplying the kinematic viscosity, v, by the astmm of the liquid. Procedures for selecting samples, and collecting and treating data for developing NIR calibrations are outlined. Two methods based on infrared spectroscopy are required to give accurate results over a broad range of isomer concentrations. The main sources of hydrolyzable chlorine in the isocyanates are carbamoyl chloride and dissolved phosgene.
These test methods do not apply to polyethers. Other requirements may become necessary and will be added as the necessary test methods become available. Jobs The business of chemistry providesskilled, good-paying American jobs.
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Search book title Enter keywords aatm book title search. The values given in parentheses are for information only. Criteria for building, evaluating asstm validating the NIR calibration model are also described. Both methods are based on the quantitative measurement of absorption bands arising from out-of-plane C-H deformation vibrations of the aromatic ring at cm- superscript: Definitions and calibration techniques are given. Please login to your authorized staff account to use this feature.
ASTM grants you a license as follows: The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. View our resource center to find aatm releases, testimonies, infographics and more. Definitions, terms, and calibration techniques are described.
The business of chemistry providesskilled, good-paying American jobs. These test methods also are applicable to many other liquids. It is not suitable for determination of hydroxyl groups attached to tertiary carbon atoms. In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. Carbon Nuclear Magnetic Resonance Spectroscopy carbon NMRmeasures the primary hydroxyl content of ethylene-oxide-propylene oxide polyethers used in preparing flexible foams.
Two test methods are required to give accurate results over a broad range of isomer concentrations. There were no books found for the applied search filters. Test Method A also applies to more viscous samples that are soluble in -butyl acetate. Finally, the procedure for sample handling, data gathering and evaluation are described. Polyurethane Raw Materials Test Methods. They apply only to materials whose colors have light-absorption characteristics similar to those of the standards.
This test method may also be applied to other isocyanates of suitable solubility, such as crude or refined polymeric isocyanates. The implementation of this standard requires that the NIR spectrometer has been installed in compliance with the manufacturer’s specifications.
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ASTM D2572 – 97(2010)
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