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ASTM D4144-94(2014)

(Test Method)

Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing (Withdrawn 2019)

Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing (Withdrawn 2019)

SIGNIFICANCE AND USE
3.1 Coatings intended to be cured by ultraviolet radiation, especially those involving free radical chemistry, tend to polymerize during storage. It is of interest to determine how well a formulation resists this effect. Many factors influence the storage stability of a composition. The procedures described here are intended to improve the precision of determining this property. Because the effects of resins, monomers, photoinitiators, synergists, stabilizers, or pigments can alter the relation between elevated and room temperature stabilities, any correlation of performance at two different temperatures is possible only with a given formulation and, therefore, is useful only for quality control.
SCOPE
1.1 This method covers procedures for testing the package stability of coatings intended to be cured by ultraviolet radiation. One procedure is given for clear coatings and another for opaque fillers.  
1.2 The values stated in SI units are to be regarded as the standard. The values given 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.
WITHDRAWN RATIONALE
This method covers procedures for testing the package stability of coatings intended to be cured by ultraviolet radiation. One procedure is given for clear coatings and another for opaque fillers.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in April 2019. The test method was withdrawn because subcommittee D01.24 is not aware of any current usage of the standard.

General Information

Status
Withdrawn
Publication Date
30-Nov-2014
Withdrawal Date
07-Apr-2019
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.24 - Physical Properties of Liquid Paints & Paint Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D4144-94(2010) - Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing
Effective Date
01-Dec-2014

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ASTM D4144-94(2014) - Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing (Withdrawn 2019)ASTM D4144-94(2014) - Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing (Withdrawn 2019)
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ASTM D4144-94(2014) - Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing (Withdrawn 2019)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D4144 − 94 (Reapproved 2014)
Standard Test Method for
Estimating Package Stability of Coatings for Ultraviolet
Curing
This standard is issued under the fixed designation D4144; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope correlation of performance at two different temperatures is
possible only with a given formulation and, therefore, is useful
1.1 This method covers procedures for testing the package
only for quality control.
stability of coatings intended to be cured by ultraviolet
radiation. One procedure is given for clear coatings and
4. Apparatus
another for opaque fillers.
4.1 Oven, maintained at 50 6 2°C.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4.2 Glass Jars, wide-mouth, 115-mL (4-oz), with 38-mm
only.
closures.
1.3 This standard does not purport to address all of the
4.3 Cans, lined, 115-mL (4-oz), friction top, with lids.
safety concerns, if any, associated with its use. It is the
4.4 Spheres, glass or porcelain, 7 to 10-mm diameter.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Procedure
bility of regulatory limitations prior to use.
5.1 Clear Coatings:
2. Summary of Method
5.1.1 Fill three 115-mL (4-oz) wide-mouth jars to 6 mm ( ⁄4
2.1 Specimens are placed in several containers, some of in.) from the top.Add a small glass or porcelain sphere to each
which are subjected to an elevated temperature while others are container and put the lids on tightly.
stored at room temperature.At specified intervals a specimen is 5.1.1.1 The amount of head space in a jar or can is critical
checked for evidence of gelling. Clear materials are held in
because the volume of air in contact with the sample has an
glass containers so they can be examined visually without effect on the rate of polymerization. The stability is also related
opening to prevent contact with air which might inhibit
to the ratio of the area of liquid-air interface to the volume of
polymerization. Opaque materials are checked by opening one liquid.
can, probing the contents with a spatula to determine the extent
5.1.2 Put two jars in an oven at 50 6 2°C. Retain the third
of any polymerization, and then discarding that specimen.
at a temperature, 25 6 2°C, and in the dark.
5.1.3 Check an oven jar daily but do not open or invert.
3. Significance and Use
Rather, tip slightly, no more than 30°, to determine the extent
3.1 Coatings intended to be cured by ultraviolet radiation, of polymerization by noting the mobility of the sphere. When
gelling is noticed, check the second jar to confirm.
especially those involving free radical chemistry, tend to
polymerize during storage. It is of interest to determine how 5.1.4 Record the duration of the test in days. Indicate the
well a formulation resists this effect. Many factors influence last day the sphere is mobile followed by the first day it is
the storage stability of a composition. The procedures de- immobile, and if the days are not consecutive, why the interval
scribed here are intended to improve the precision of deter-
occurred.
mining this property. Because the effects of resins, monomers,
5.1.5 Check the jar stored at room temperature every week
photoinitiators, synergists, stabilizers, or pigments can alter the
but do not open or invert. Tip slightly, no more than 30°, to
relation between elevated and room temperature stabilities, any
determine if the sphere is immobile.
5.1.6 Record the number of weeks not gelled followed by
the first week the sphere is immobile.
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is th
...

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SCOPE
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SCOPE
1.1 This test method covers a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such deformation.  
1.2 This test method should be restricted to testing in only one laboratory when numerical values are used because of the poor reproducibility of the method. Interlaboratory agreement is improved when ranking is used in place of numerical values.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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