ASTM D3236-15
Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials

Standard No.

ASTM D3236-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D3236-15(2021)

Latest

ASTM D3236-15(2021)

Scope

5.1 This test method distinguishes between hot melts having different apparent viscosities. It is believed that apparent viscosity determined by this procedure is related to flow performance in application machinery operating under conditions of low shear rate. Apparent viscosity as determined by this test method may not correlate well with end-use applications where high shear rates are encountered.

5.2 Materials of the type described in this procedure may be quite non-Newtonian and as such, the apparent viscosity will be a function of shear rate under the conditions of test. Although the viscometer described in this test method generally operates under conditions of relatively low shear rate, differences in shear effect can exist depending upon the spindle and rotational speed conditions selected for the test program. Maximum correlation between laboratories, therefore, depends upon testing under conditions of equivalent shear.

1.1 This test method covers the determination of the apparent viscosity of hot melt adhesives and coating materials compounded with additives and having apparent viscosities up to 2008201;000 millipascal second (mPa·s) (Note 3) at temperatures up to 1758201;°C (3478201;°F).

Note 1: Although precision has not been studied, this procedure may be adaptable to viscosities higher than the present 2008201;0008201;mPa·s limit and temperatures above 1758201;°C (3478201;°F). Equipment described in this test method permits testing of materials having viscosities as high as 168201;×8201;10⁶ mPa·s and provides temperatures up to 2608201;°C (5008201;°F).

Note 2: For petroleum waxes and their blends having apparent viscosities below 15 mPa·s, Test Method D445 is especially applicable.

Note 3: One pascal second (Pa·s)8201;=8201;1000 centipoise (cP); one millipascal-second8201;=8201;one centipoise.

1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.3 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.

ASTM D3236-15 Referenced Document

• ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)

ASTM D3236-15 history

• 2021 ASTM D3236-15(2021) Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials
• 2015 ASTM D3236-15 Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials
• 1988 ASTM D3236-88(2014) Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials
• 1988 ASTM D3236-88(2009) Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials
• 1988 ASTM D3236-88(2004) Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials
• 1988 ASTM D3236-88(1999) Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials