ASTM D6226 PDF

Buy ASTM D TEST METHOD FOR OPEN CELL CONTENT OF RIGID CELLULAR PLASTICS from SAI Global. (ASTM D) Standard Test Method for Open Cell Content of Rigid Cellular Plastics [Gas Pycnometer] – This test method determines numerical values for open. DIFFERENT APPLICATIONS: Correction For Cut Cells. In ASTM D, a corrected percentage of open cells is estimated by remeasuring the volume of a cube.

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It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the atm of regulatory limitations prior to use. This test method determines numerical atsm for open cells.

If a shift occurs, repeat 9. Signicance and Use 5. The valve alternative means to vent the gas. D — 05 Standard Test Method for Open Cell Content of Rigid Cellular Plastics1 This standard is issued under the xed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Report the component specimens determined from their measurements of time used. Allow the pressure to fall to a steady value, correcting the pressure display with the zero control as necessary.

Conditioning with the rest of the system and allow the pressure to stabilize 8. D Practice for Conditioning Plastics and Electrical 3.

Originally approved in View our resource center to find press d66226, testimonies, infographics and more. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. It is primarily intended for rigid cellular plastics. These cells may be interconnecting open cellnon-connecting closed cellor any combination of these E Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method4 types.

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ASTM D6226-05 standard open cell content of rigid cellular plastics

By not accounting for 3. Please refer to the specic operating manuals for additional details on operation and calibration. Terminology preparation and will be included as open cells, see Note 2.

This purging process shall be repeated at least twice more. Any test specimen preparation, conditioning, or dimensions, or both, and testing parameters covered in the materials specification shall take precedence over those mentioned in this test method. These cells may be interconnecting open cellnon-connecting closed cellor any combination of these types.

NOTE 7—If the pressure reading drifts continuously to lower pressures, 8. This test method and ISO use the same basic principles but are significantly different in experimental detail.

It is a porosity determination, measuring the accessible cellular volume of a material.

ASTM D Open Cell Content of Rigid Cellular Plastics_百度文库

The data in Table 1 should not be applied to acceptance or rejection of materials, as these data apply only to the materials tested in the round robin and are unlikely to be rigorously representative of other lots, formulations, conditions, materials, or laboratories. G-DenPyc gas pycnometer helium true density analyzer introduction A gas pycnometer operates by detecting the pressure change resulting from displacement of gas by a solid object.

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It is a porosity determination, measuring the accessible cellular volume of a material. A cellular hole cutter can also high percentage of closed cells is necessary to prevent escape be used. Jobs The business of chemistry providesskilled, good-paying American jobs. For example, for thermal insulation applications, a high percentage of closed cells is necessary to prevent escape of gases and to promote low thermal conductivity.

A greatly simplied diagram of the instrument is shown in Fig. This standard is also available to be included in Standards Subscriptions. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Upon opening the valve, the condition is established: ACC is investing in research to improve understanding of how chemicals impact health and the environment. April 1, 1 Removed permissive language throughout the test method. D Terminology Related to Plastics2 3.

Report the number of purge cycles used. Asttm cells may be interconnecting open cellnon-connecting closed cellor any combination of these types. Insulation Materials for Testing2 3. Need more than one copy? Last previous edition approved in as D – 98e1. Volumes are in cm3[in. Precision, characterized by repeatability Sr and r and reproducibility SR and R have been determined as shown in Table 1.