ASTM D 724 Standard Test Method for Surface Wettability of Paper (Angle-Of-Contact Method)
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ASTM D 724 Document Information:
Title
Standard Test Method for Surface Wettability of Paper (Angle-Of-Contact Method)
ASTM International
Publication Date:
Feb 10, 1999
Scope:
This test method measures the angle of contact when a drop of liquid
is applied to the surface of a
specimen of paper.
The measurement of both the initial angle of contact and the angle of
contact after a defined
elapsed period of time may be measured.
A standard liquid (ink) for making measurements is described.
Other liquids including printing inks, writing inks, adhesives, oils,
and coating materials may be
used upon agreement of those involved in the testing being done.
Two types of apparatus for measuring the contact angle using the
procedure in this test method are
described. Additional instruments that can perform the procedure in
this test method may also
provide equivalent results. A different procedure using an automated
instrument for measuring angle
of contact will be found in Test Method D 5725
The values stated in inch-pound units are to be regarded as the
standard. The values given in
parentheses are for information only.
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.
Keywords:
- angle-of-contact
- contact angle
- paper
- surface wettability
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