ASTM D1259-85(2001)
(Test Method)Standard Test Methods for Nonvolatile Content of Resin Solutions
Standard Test Methods for Nonvolatile Content of Resin Solutions
SCOPE
1.1 These test methods cover the determination of nonvolatile content of solutions of resins in volatile organic solvents.
1.2 Two test methods are included as follows:
1.2.1 Test Method A--For solutions of non-heat-reactive resins. These solutions contain resins that remain stable and release the solvent under conditions of the test. Examples are ester gums and alkyds.
1.2.2 Test Method B--For two types of solutions:
Solutions of heat-reactive resins. These solutions contain resins that undergo condensation or other reactions under the influence of heat. Examples include the formaldehyde reaction products of urea, melamine, and phenols.
1.2.2.2 Solutions that release solvent slowly. Examples include epoxy resin solutions.
1.3 Test Methods A and B differ primarily in the drying times and types of oven used.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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.
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Designation:D1259–85(Reapproved2001)
Standard Test Methods for
Nonvolatile Content of Resin Solutions
This standard is issued under the fixed designation D 1259; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope minimizing chances for volatiles to be trapped and held during
the heating operation.
1.1 These test methods cover the determination of nonvola-
2.2 Either a gravity-convection or a forced-ventilation oven
tile content of solutions of resins in volatile organic solvents.
and a 30-min heating period at 105°C are used in Test Method
1.2 Two test methods are included as follows:
A.
1.2.1 Test Method A—For solutions of non-heat-reactive
2.3 A forced-ventilation oven and a 2-h heating period at
resins. These solutions contain resins that remain stable and
105°C are used in Test Method B.
release the solvent under conditions of the test. Examples are
ester gums and alkyds.
3. Significance and Use
1.2.2 Test Method B—For two types of solutions:
3.1 The nonvolatile content of resin solutions is useful to
1.2.2.1 Solutions of heat-reactive resins. These solutions
coatings producers and users for the determination of the total
contain resins that undergo condensation or other reactions
solids available for film formation and for the estimation of the
under the influence of heat. Examples include the formalde-
volatile organic content.
hyde reaction products of urea, melamine, and phenols.
1.2.2.2 Solutions that release solvent slowly. Examples
TEST METHOD A—NON-HEAT-REACTIVE RESIN
include epoxy resin solutions.
SOLUTIONS
1.3 Test Methods A and B differ primarily in the drying
times and types of oven used.
4. Apparatus
1.4 The values stated in SI units are to be regarded as the
4.1 Ovens:
standard. The values given in parentheses are for information
4.1.1 Gravity-convection type, maintained at 105 6 2°C,
only.
with vents open.
1.5 This standard does not purport to address all of the
4.1.2 Forced-ventilation type, maintained at 105 6 2°C. For
safety concerns, if any, associated with its use. It is the
ovens with adjustable air flow rate, set the control damper at
responsibility of the user of this standard to establish appro-
50 %.
priate safety and health practices and determine the applica-
4.2 Aluminum or Tin Foil, from 38 to 50 µm (0.0015 to
bility of regulatory limitations prior to use.
0.0020 in.) in thickness. Either one piece 150 by 300 mm (6 by
12in.),ortwo150by150-mm(6by6-in.)piecesmaybeused.
2. Summary of Test Methods
The foil must be perfectly smooth; if it becomes wrinkled
2.1 In both test methods, a weighed specimen of resin
during the initial handling, roll smooth as directed in 5.2.
solution is spread under pressure between two weighed sheets
4.3 Plate Glass—Two pieces about 5 mm ( ⁄16 in.) thick;
of aluminum or tin foil. The coated foil sheets are separated
1 1
one piece 140 by 140 mm (5 ⁄2 by 5 ⁄2 in.) and one piece 180
and then dried. The weight of residue is determined and the
by 180 mm (7 by 7 in.).
nonvolatile content is calculated. The test method is unique in
4.4 Device for Weighing Specimens —Apparatus that will
that it provides for drying of a very thin film of resin, thus
prevent loss of volatile matter during the weighing operation
such as any of the following, or equivalent:
4.4.1 Syringe, Luer, 2 or 5-mL capacity,
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.21 on Chemical Analysis of Paints and Paint
Materials. ASmith weighing buret , fromAce Glass Co., 1430 Northwest Blvd.,Vineland,
Current edition approved Nov. 29, 1985. Published January 1986. Originally NJ 08360 was used in this test method. The bulb pipet is available from most
e1
published as D 1259 – 53. Last previous edition D 1259 – 61 (1980) . scientific supply houses.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1259–85 (2001)
4.4.2 Weighing Buret, Smith, 10-mL capacity, or case a specimen of low viscosity should extend beyond the
4.4.3 Bulb Pipet, dropping, with 50-mL Erlenmeyer flask. edge of the foil, repeat the determination, allowing a few
4.5 Roller, for Smoothing Foil—Use a ground and polished minutes for a portion of the solvent to evaporate from the
cylinder, preferably stainless steel, approximately 7 in. (180 weighed specimen before covering and pressing it.
mm) long and 2 in. (50 mm) in diameter. 5.3 After pressing, open the foil to its full length and place
4.6 Foil Trays, two types as follows: it in the foil tray. Place the tray in either a gravity-convection
4.6.1 Trays measuring 165 by 300 mm (6 ⁄2 by 12 in.) , for or a forced-ventilation oven at 105 6 2°C for 30 min.
use with (6 by 12-in.) foil, constructed from No. 22-gage 5.4 Remove the tray from the oven and then carefully
0.6–mmaluminumsheetinaccordancewithdimensionsshown remove the foil sheet from the tray. Return the dried film
in Fig. 1. Several trays may be stacked in the oven to permit surfaces to the face-to-face position. While the foil is still
running several specimens simultaneously. warm, fold the edges together to enclose completely the dried
1 1
4.6.2 Trays measuring 165 by 165 mm (6 ⁄2 by 6 ⁄2 in.), for film. Without undue delay, weigh to 0.1 mg.
usewith(6by6-in.)foil,withholder,shallbeconstructedfrom
6. Calculation
No. 22-gage aluminum sheet, as shown in Fig. 2.
6.1 Calculate the percent nonvolatile content, C, as follows:
5. Procedu
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