ASTM D1201-99
(Specification)Standard Specification for Thermosetting Polyester Molding Compounds
Standard Specification for Thermosetting Polyester Molding Compounds
SCOPE
1.1 This specification covers compression molding thermosetting compounds consisting of unsaturated polyester resin binders that have been combined with fillers, pigments, and other chemical agents.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are given for information only.
Note 1-The properties included in this specification are those required to identify the types of molding compounds covered. There may be other requirements necessary to identify particular characteristics. These will be added to the specification as their inclusion becomes generally desirable and the necessary test data and methods become available.
Note 2--ISO 3672-1: 1979(E) is similar but not equivalent to this specification. Product classifications and characterization are not equivalent.
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Designation: D 1201 – 99
Standard Specification for
Thermosetting Polyester Molding Compounds
This standard is issued under the fixed designation D 1201; 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.
1. Scope * 3. Classification
1.1 This specification covers compression molding, thermo- 3.1 This specification covers the following types of polyes-
setting, unsaturated polyester molding compounds as further ter molding compounds:
defined in 3.1. 3.1.1 Type 1—General-purpose, granular material with min-
1.2 The values stated in SI units are to be regarded as the eral fillers.
standard. 3.1.2 Type 2—General-purpose, granular material with min-
eral and cellulosic fillers, and having improved mechanical
NOTE 1—The properties included in this specification are those re-
strength.
quired to identify the types of molding compounds covered.There may be
3.1.3 Type 3—General-purpose, putty-type material with
other requirements necessary to identify particular characteristics. These
mineral fillers.
will be added to the specification as their inclusion becomes generally
desirable and the necessary test data and methods become available.
3.1.4 Type 4—Putty-type material with mineral fillers hav-
NOTE 2—ISO 3672–1: 1979(E) is similar but not equivalent to this
ing superior electrical properties.
specification. Product classification and characterization are not equiva-
3.1.5 Type 5—High-impact, glass-fiber filled material in
lent.
mat form. It has good electrical properties.
3.1.6 Type 6—High-impact, glass-fiber filled material in
2. Referenced Documents
putty form.
2.1 ASTM Standards:
D 256 Test Method for Determining the Pendulum Impact
4. General Requirements
Resistance of Notched Specimens of Plastics
4.1 The molding compounds shall be of uniform composi-
D 495 Test Method for High-Voltage, Low-Current, Dry
tion, so compounded as to conform to the requirements
Arc Resistance of Solid Electrical Insulation
prescribed in this specification.
D 570 Test Method for Water Absorption of Plastics
4.2 The apparent density, bulk factor, particle size, physical
D 618 Practice for Conditioning Plastics and Electrical
form, and color of the compound shall be as agreed upon
Insulating Materials for Testing
between the purchaser and supplier.
D 790 TestMethodsforFlexuralPropertiesofUnreinforced
and Reinforced Plastics and Electrical Insulating Materi- NOTE 3—The terms “apparent density,” “bulk factor,” and “particle
size” cannot be used in the same sense with putty-type and glass-filled
als
materials as with granular materials.
D 792 TestMethodsforDensityandSpecificGravity(Rela-
tive Density) of Plastics by Displacement
5. Detail Requirements
D 3892 Practice for Packaging/Packing of Plastics
5.1 Test specimens, molded by compression under condi-
2.2 ISO Standard:
tions specified by the manufacturer, shall conform to the
ISO 3672–1: 1979(E) Plastics—Unsaturated Polyester
requirements prescribed in Table 1.
Resins—Part 1: Designation
6. Sampling
6.1 Abatchofmoldingcompoundshallbeconsideredaunit
This specification is under the jurisdiction of ASTM Committee D-20 on
Plastics and is the direct responsibility of Subcommittee D20.16 on Thermosetting
of manufacture and may consist of a blend of two or more
Materials.
production runs of the same material.
Current edition approved Nov. 10, 1999. Published February 2000. Originally
published as D 1201 – 52. Last previous edition D 1201 – 81 (1992).
Annual Book of ASTM Standards, Vol 08.01.
Annual Book of ASTM Standards, Vol 10.01.
Annual Book of ASTM Standards, Vol 08.02.
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 1201
TABLE 1 Detail Requirements for Compression-Molded Test Specimens
Type 1 Type 2 Type 3 Type 4 Type 5 Type 6
Specific gravity, 23/23°C:
min 2.18 1.6 1.7 1.9 1.95 1.75
max 2.28 1.9 1.9 2.1 2.10 1.90
Flexural strength, min:
MPa 51.7 65.5 51.7 51.7 82.7 82.7
Modulus of elasticity in flexure, min:
MPa 13 800 8 960 8 960 12 400 13 800 11 000
Impact resistance (Izod), min, J/m of notch . . . . 320(6) 320(6)
Arc resistance, min, s 175 125 125 175 130 75
Water absorption, 24 h, max, % 0.15 1.0 0.5 0.15 0.15 0.25
6.2 Adequate statistical sampling shall
...
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