ASTM D1490-01(2006)
(Test Method)Standard Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions
Standard Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions
SIGNIFICANCE AND USE
Wood adhesive performance and cost is often related to the solids level (nonvolatile content).
This test method determines the apparent nonvolatile content for urea-formaldehyde resins.
SCOPE
1.1 This test method covers the determination of the apparent nonvolatile content of urea-formaldehyde resin solutions intended for use as wood adhesives. Due to the chemical nature of such resins, the nonvolatile content determined varies markedly according to the type of test used. In order to minimize this condition, this test method is designed to yield reasonably uniform agreement among different laboratories testing specimens from the same sample.
1.2 The values stated in SI 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D1490 − 01 (Reapproved2006)
Standard Test Method for
Nonvolatile Content of Urea-Formaldehyde Resin Solutions
This standard is issued under the fixed designation D1490; 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* 5.2 Thermometer—A glass thermometer having a range
from 0 to 110 or 150°C (32 to 230 or 302°F) and accurate to
1.1 This test method covers the determination of the appar-
61°C (62°F) at the required immersion.
ent nonvolatile content of urea-formaldehyde resin solutions
intended for use as wood adhesives. Due to the chemical nature 5.3 Constant-Temperature Oven, capable of maintaining a
of such resins, the nonvolatile content determined varies temperature of 105 6 1°C (221 6 2°F) and an air turnover of
markedly according to the type of test used. In order to 15 to 17 times per min. Use only one shelf for supporting the
minimize this condition, this test method is designed to yield specimens. Position this shelf in the upper third of the oven, as
reasonably uniform agreement among different laboratories near one third from the ceiling as possible. Level the shelf to
testing specimens from the same sample. within 0.025 mm from edge to edge in all directions. Place the
thermometer bulb as close to the center of the shelf as possible.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information 5.4 Tared Lunge Weighing Pipet, stoppered weighing bottle,
only. or equivalent dispenser for accurately weighing by difference.
1.3 This standard does not purport to address all of the
5.5 Drying Dishes—Aluminum foil dishes, with 57 to
safety concerns, if any, associated with its use. It is the
58-mm inside diameter and 17 mm deep, with flat bottoms,
responsibility of the user of this standard to establish appro-
having a tolerance of 60.076 mm.
priate safety and health practices and determine the applica-
5.6 Desiccator, with tray, containing active anhydrous cal-
bility of regulatory limitations prior to use.
cium chloride desiccant.
2. Referenced Documents
6. Sampling
2.1 ASTM Standards:
6.1 Take a sufficient quantity of the resin lot being evaluated
D907 Terminology of Adhesives
to conduct the test. While the test consumes less than 10 g of
3. Terminology 1
resin, a sample of approximately 0.23 L ( ⁄2 pt) is suggested to
ensure that it is representative and will permit rechecks, if
3.1 Definitions—Many terms in this test method are defined
necessary. Record the lot number of the resin being used.
in Terminology D907.
6.2 As urea-formaldehyde resin solutions have a varying
4. Significance and Use
tendency toward mild settling or stratification, agitate the resin
4.1 Wood adhesive performance and cost is often related to
thoroughly before sampling, and mix the sample well before it
the solids level (nonvolatile content).
is used in the test.
4.2 This test method determines the apparent nonvolatile
7. Procedure
content for urea-formaldehyde resins.
7.1 Preparation of Test Specimens—Place a portion of the
5. Apparatus
sample in the weighing dispenser and weigh to 61.0 mg.
5.1 Analytical Balance, accurate to 61.0 mg.
Transfer a sufficient amount of the sample to yield 0.45 6 0.05
g of dried residue, to a tared drying dish which has been
This test method is under the jurisdiction of ASTM Committee D14 on
previously dried for1hat105 6 1°C (221 6 2°F), and cooled
Adhesives and is the direct responsibility of Subcommittee D14.30 on Wood
and held in the desiccator until time of use. Reweigh the
Adhesives.
dispenser and determine, by difference to 61.0 mg, the exact
Current edition approved Oct. 1, 2006. Published October 2006. Originally
weight of the specimen transferred to the drying dish. Prepare
approved in 1957. Last previous edition approved in 2001 as D1490 – 01. DOI:
10.1520/D1490-01R06.
a total of three such specimens from the contents of the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
weighing dispenser. Pipet 5 mL (0.01 pt) of water into
...
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