GB/T 12008.7-2010: Plastics -- Polyether polyols -- Part 7: Determination of viscosity

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Scope

This Part of GB/T 12008 specifies the methods for the determination of viscosity of
polyether polyols.
Method A is Brookfield viscosity method. This test method is applicable to the
determination of viscosity of polyether polyols with the viscosity range of (10 ~ 105)
mPa  s at 25 °C or 50 °C. Meanwhile, it is also applicable to the determination of
viscosity of a more viscous sample that can be dissolved in n-butyl acetate.
Method B is rotation-type viscosity method. This test method is applicable to the
determination of viscosity of polyether polyols with the viscosity range of (10 ~ 106)
mPa  s at 25 °C.

Basic Data

Standard ID	GB/T 12008.7-2010 (GB/T12008.7-2010)
Description (Translated English)	Plastics -- Polyether polyols -- Part 7: Determination of viscosity
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080
Word Count Estimation	10,116
Date of Issue	2010-09-26
Date of Implementation	2011-08-01
Older Standard (superseded by this standard)	GB/T 12008.8-1992
Quoted Standard	GB 3102.3
Adopted Standard	ISO 3219-1993, NEQ; ASTM D4878-2003, NEQ
Regulation (derived from)	National Standard Approval Announcement 2010 No.6 (Total No.161)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the method for measuring the viscosity of polyether polyols. A method for the Brookfield viscosity methods. This test method is applicable to mPas viscosity polyether polyol was measured at 25��C or 50��C when the viscosity range (10 to 105). While suitable for measuring the viscosity can be dissolved in n-butyl acetate is more viscous samples. Method B is a rotary viscosity method. This test method is suitable for the viscosity of the polyether polyol mPas measured at 25��C viscosity range (10 to 106).