ASTM-D6226 Standard Test Method for Open Cell Content of Rigid Cellular Plastics

ASTM-D6226 - 2015 EDITION - CURRENT
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Standard Test Method for Open Cell Content of Rigid Cellular Plastics
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Scope

1.1 This test method covers cellular plastics, which are composed of membranes or walls of polymer separating small cavities or cells. These cells may be interconnecting (open cell), non-connecting (closed cell), or any combination of these types. This test method determines numerical values for open cells. It is a porosity determination, measuring the accessible cellular volume of a material. The remaining volume is that occupied by closed cells and cell walls. Since any conveniently sized specimen is typically obtained by some cutting operation, a fraction of the closed cells will be opened by specimen preparation and will be included as open cells, (see Note 2).

1.2 This test method provides good accuracy on predominantly highly open-celled materials. By not accounting for closed cells that were opened during specimen preparation, the accuracy decreases as the closed cell content increases and as the cell size increases.

1.3 The values as stated in SI units are to be regarded as the standard. The values in parentheses are given for reference only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

Note 1: This test method and ISO 4590 use the same basic principles but are significantly different in experimental detail.

Note 2: Two procedures for correcting for cells opened during specimen preparation are described in Appendix X1.1.

Keywords

cell wall; cellular plastics; closed cell; open cell; pycnometer;; ICS Number Code 83.080.01 (Plastics in general)

To find similar documents by ASTM Volume:

08.03 (Plastics (III): D5117 - latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products)

To find similar documents by classification:

83.080.01 (Plastics in general)

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Document Number

ASTM-D6226-15

Revision Level

2015 EDITION

Status

Current

Modification Type

Revision

Publication Date

Sept. 1, 2015

Document Type

Test Method

Page Count

7 pages

Committee Number

D20.22