標準號：ANSI/ASTM D4889-1998
中文標準名稱：聚氨酯原料測試方法:原油或改性的異氰酸酯粘度的測定(08.03)
英文標準名稱：Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Crude or Modified Isocyanates (08.03)
標準類型：G31
發布日期：1999/12/31 12:00:00
實施日期：1998/10/13 12:00:00
中國標準分類號：G31
國際標準分類號：83.040.30;83.080.20
適用范圍：These test methods (A and B) determine the viscosity of crude or modified isocyanates. They are applicable to products derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate), and polymethylene polyphenyl isocyanates (see Note 0). Note 0Test method A includes a procedure for measuring dynamic viscosity using a rotational Brookfield instrument. Test method B is simply a reference to a general procedure for measuring kinematic viscosity using a Cannon-Fenske instrument, D 445. The values stated in SI units are to be regarded as 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. For specific hazards statements see Warnings at the end of and . Note 2There is no equivalent ISO standard.