ASTM International

Standard Practice for Polyurethane Raw Materials: Polyurethane Foam Cup Test
 N D7487

Annotation

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.

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.

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

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-There is no known ISO equivalent to this standard.

Автоматический перевод:

Общепринятая практика для сырья полиуретана: тест Кубка пенополиуретана

Эта практика покрывает определение кремового времени (время инициирования), вершина времени чашки, свободного времени повышения, свободной высоты повышения, строковое время геля (вытяните время), прикрепите свободное время, обоснуйтесь, и бесплатная плотность повышения формулировок пенополиуретана с помощью испытания на вспенивание чашки.