Standard Classification System for Cellulose Acetate Propionate Molding and Extrusion Compounds

SCOPE
1.1 This classification system covers requirements for plasticized cellulose propionate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a propionyl content of at least 38% and an acetyl content of not more than 9% and may or may not contain dyes and pigments. Recycled plastics based on cellulose acetate propionate are not covered in this classification system.  
1.2 The values stated in SI units are to be regarded as the standard.
1.3 The following precautionary statement pertains only to the Test Methods portion, Section 11, of this classification: 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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Publication Date
09-Jul-1998
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ASTM D1562-98 - Standard Classification System for Cellulose Acetate Propionate Molding and Extrusion Compounds
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D 1562 – 98
Standard Specification for
Cellulose Acetate Propionate Molding and Extrusion
Compounds
This standard is issued under the fixed designation D 1562; 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 2. Referenced Documents
1.1 This specification covers requirements for plasticized 2.1 ASTM Standards:
cellulose acetate propionate thermoplastic compounds suitable D 149 Test Method for Dielectric Breakdown Voltage and
for injection molding and extrusion. These compounds have a Dielectric Strength of Solid Electrical Insulating Materials
propionyl content less than 48 % and an acetyl content less at Commercial Power Frequencies
than 3 % and may or may not contain dyes and pigments. D 256 Test Method for Determining the Pendulum Impact
Cellulosicplasticmaterials,beingthermoplastic,arereprocess- Resistance of Notched Specimens of Plastics
able and recyclable. This specification allows for the use of D 257 Test Methods for DC Resistance or Conductance of
those cellulosic materials, provided that all specific require- Insulating Materials
ments of this specification are met. D 570 Test Method for Water Absorption of Plastics
1.2 The properties included in this specification are those D 618 Practice for Conditioning Plastics and Electrical
required to identify the compositions covered. There may be Insulating Materials for Testing
other requirements necessary to identify particular character- D 635 Test Method for Rate of Burning and/or Extent and
istics important to specialized applications. These may be Time of Burning of Self-Supporting Plastics in a Horizon-
specified by using the suffixes as given in Section 5. tal Position
1.3 This classification system and subsequent line call out D 638M Test Method for Tensile Properties of Plastics
specification are intended to provide a means of calling out [Metric]
plastic materials used in the fabrication of end items or parts. D 790 TestMethodsforFlexuralPropertiesofUnreinforced
It is not intended for the selection of materials. Material and Reinforced Plastics and Electrical Insulating Materi-
selection should be made by those having expertise in the als
plastic field after careful consideration of the design and D 792 TestMethodsforDensityandSpecificGravity(Rela-
performance required of the part, environment to which it will tive Density) of Plastics by Displacement
be exposed, fabrication process to be employed, costs in- D 883 Terminology Relating to Plastics
volved, and inherent properties of the material other than those D 1003 Test Method for Haze and Luminous Transmittance
covered by this specification. of Transparent Plastics
1.4 The values stated in SI units are to be regarded as the D 1600 Terminology for Abbreviated Terms Relating to
standard. Plastics
1.5 The following safety hazards caveat pertains only to the D 1729 Practice for Visual Evaluation of Color Differences
test method portion, Section 11, of this specification. This of Opaque Materials
standard does not purport to address all of the safety concerns, D 1898 Practice for Sampling of Plastics
if any, associated with its use. It is the responsibility of the user D 3641 Practice for Injection Molding Test Specimens of
of this standard to establish appropriate safety and health Thermoplastic Molding and Extrusion Materials
practices and determine the applicability of regulatory limita- D 3892 Practice for Packaging/Packing of Plastics
tions prior to use. D 4000 Classification System for Specifying Plastic Mate-
rials
NOTE 1—There is no equivalent or similar ISO standard.
D 5033 GuidefortheDevelopmentofStandardsRelatingto
This specification is under the jurisdiction of ASTM Committee D-20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Annual Book of ASTM Standards, Vol 10.01.
Materials. Annual Book of ASTM Standards, Vol 08.01.
Current edition approved July 10, 1998. Published March 1999. Originally Annual Book of ASTM Standards, Vol 06.01.
published as D 1562–58 T. Last previous edition D 1562–96. Annual Book of ASTM Standards, Vol 08.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 1562
CAP0122F11 (1)
the Proper Use of Recycled Plastics
E 308 Practice for Computing the Colors of Objects by
Using the CIE System
CAP = Table CAP property requirements
01 = Group 1—High impact strength
3. Terminology
2 = Class 2—Plasticizer range from 8 to 20 % (see
3.1 Definitions—The terminology used in this specification
Table CAP, Footnote 1)
is in accordance with Terminologies D 883 and D 1600.
2 = Grade 2—Extrusion application
F11 = Flammability requirement—Burn rate maximum of
4. Classification
5 cm/min, when tested in accordance with Test
4.1 This specification covers the following groups. classes,
Method D 635
and grades (see Table CAP):
NOTE 2—CAP0122 corresponds to the following physical property
4.1.1 Group 01—High impact strength.
requirements in Table CAP:
4.1.2 Group 02—High tensile strength.
Specific gravity: 1.19–1.20.
4.1.3 Class—According to plasticizer content and proper-
Tensile stress at yield: 19 MPa min.
ties specified in Table CAP.
Flexural modulus: 1,000 MPa min.
4.1.4 Grade 1—For injection molding (general purpose).
Izod impact strength: 200 J/m min.
Water absorption: 2.0 % max.
4.1.5 Grade 2—For extrusion (see requirements in 6.4).
Weight loss on heating: 2.0 % max.
5. Suffixes
6. Materials and Manufacture
5.1 When requirements are needed that are not covered in
6.1 Materials supplied shall be as uniform in composition
Table CAP, they shall be indicated through the use of suffixes.
and size, and as free of contamination, as can be achieved by
5.2 A list of suffixes can be found in Classification System
good manufacturing practice.
D 4000 (Table 3) and may be used for additional requirements
6.2 These materials may contain colorants in the nominal
as appropriate. Additional suffixes will be added to that
amounts ordinarily employed, but such additives shall not alter
classification system as test methods and requirements are
the ability of the materials to meet the specified properties.
developed and requested.
6.3 The color of material supplied shall be comparable,
5.3 Color and opacity shall be within the limits defined in
within commercial match tolerances, to the color of standard
6.3
samples prepared by the manufacturer.
5.4 Some of the more commonly used suffixes for cellulose
6.4 Grade 2 materials shall be verified by the manufacturer
acetate propionate are shown as follows:
to be of extrusion quality.
E=electricalrequirements(seeTable1)asdesignatedbythe
following digits:
7. Physical Requirements
First Digit
1 = volume resistivity—Test Methods D 257.
7.1 Test specimens of the material shall conform to the
dielectric strength—Test Method D 149 (short-
requirements prescribed in Table CAP.
time/ step-by-step).
7.2 Molded specimens, for those tests requiring them, shall
Second Digit
be prepared in accordance with Section 10.
1 = volume resistivity and dielectric strength meet
7.3 Conformance to the requirements of this specification
property requirements as shown in Table 1.
shall be determined in accordance with Section 11.
F = flammability requirements as designated by the follow-
ing digits:
8. Sampling
First Digit
8.1 The material shall be sampled in accordance with
1 = rate of burning—Test Method D 635, specimen size:
Sections 9 to 12 of Practice D 1898. Adequate statistical
125 mm long by 12.7 mm wide by 3.2 mm thick.
sampling prior to packaging shall be considered an acceptable
Second Digit
alternative.
1 = burn rate 5 cm/min, max.
8.2 Forsamplingpurposes,abatchorlotshallbeconsidered
T = transmittance requirements as designed designated by
aunitofmanufactureaspreparedforshipmentandmayconsist
the following digits:
of a blend of two or more production runs of material.
First Digit
1 = total luminous transmittance Procedure A of Test
9. Number of Tests
Method D 1003.
9.1 Routine testing of each batch or lot shall be limited to
Second Digit
properties designated in Table CAP of this specification.
1 = total luminous transmittance, 80 % min.
9.2 One set of samples for those tests that are designated
5.5 An example of this classification system for a high-
(Section 12) shall be considered sufficient for testing the batch
impact cellulose acetate propionate formulation would be as
or lot. The average results from those samples shall comply
follows:
with the requirements prescribed in this specification.
9.3 If any failure occurs, the materials may not be certified
Annual Book of ASTM Standards, Vol 08.03. to this specificati
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