ASTM-D7487 Standard Practice for Polyurethane Raw Materials: Polyurethane Foam Cup Test

ASTM-D7487 - 2018 EDITION - CURRENT
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Standard Practice for Polyurethane Raw Materials: Polyurethane Foam Cup Test
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Scope

1.1 This practice covers the determination of cream time (initiation time), top of cup time, free rise time, free rise height, string gel time (pull time), tack free time, settle back, and free rise density of polyurethane foam formulations using a cup foam test.

1.2 Typical definitions, terms, and techniques are described; including procedures for mixing and transferring samples to the foaming container; and data gathering and evaluation. However, agreement between the customer and the testing laboratory for all these items must be obtained prior to use.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Note 1: There is no known ISO equivalent to this standard.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

cream time; cup test; foam testing; formulated polyol; free rise density; free rise height; free rise time; initiation time; isocyanate; polyurethane; pull time; raw material; resin blend; settle back; sigh back; sink back; string gel time; tack free time; top of cup time;; ICS Number Code 83.080.10 (Thermosetting materials)

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:

83.080.10 (Thermosetting materials Including ebonite Silicones, see 71.100.55)

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Document Number

ASTM-D7487-18

Revision Level

2018 EDITION

Status

Current

Modification Type

Revision

Publication Date

Aug. 1, 2018

Document Type

Practice

Page Count

5 pages

Committee Number

D20.22