ASTM D707-05

Standard Specification for Cellulose Acetate Butyrate Molding and Extrusion Compounds

ABSTRACT
This specification covers requirements for plasticized cellulose acetate butyrate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a butyryl content less than 38 % and an acetyl content less than 15 % and may or may not contain dyes and pigments. This specification does not include special materials compounded for special applications. Cellulosic plastic materials, being thermoplastic, are reprocessable and recyclable. This specification allows for the use of those cellulosic materials, provided that all specific requirements of this specification are met. Test specimens of the thermoplastic compounds shall conform to the prescribed specific gravity, tensile stress at yield, flexural modulus, Izod impact strength, water absorption and weight loss on heating. The materials shall also be subject to color-visual, color-quantitative, and plasticizer content analysis.
SCOPE
1.1 This specification covers requirements for plasticized cellulose acetate butyrate thermoplastic compounds suitable for injection molding and extrusion. These compounds have a butyryl content less than 38 % and an acetyl content less than 15 % and may or may not contain dyes and pigments. This specification does not include special materials compounded for special applications. Cellulosic plastic materials, being thermoplastic, are reprocessable and recyclable. This specification allows for the use of those cellulosic materials, provided that all specific requirements of this specification are met.
1.2 The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using the suffixes as given in Section 5.
1.3 This classification system and subsequent line call out (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastic field after careful consideration of the design and performance required of the part, environment to which it will be exposed, fabrication process to be employed, costs involved, and inherent properties of the material other than those covered by this classification system.
1.4 The values stated in SI units are to be regarded as standard.
1.5 The following safety hazards caveat pertains only to the test method portion, Section , of this specification. 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.
Note 1—There is no equivalent or similar ISO standard.

General Information

• Status: Historical
• Publication Date: 30-Jun-2005
• ICS: 83.080.20 - Thermoplastic materials
• ICS: 83.140.99 - Other rubber and plastics products
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaces: ASTM D707-98 - Standard Specification for Cellulose Acetate Butyrate Molding and Extrusion Compounds
• Effective Date: 01-Jul-2005
• Replaced By: ASTM D707-09 - Standard Classification System and Basis for Specification for Cellulose Acetate Butyrate Molding and Extrusion Compounds
• Effective Date: 01-Nov-2009
• Referred By: ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
• Effective Date: 01-Jul-2005

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: D707 – 05
Standard Specification for
Cellulose Acetate Butyrate Molding and Extrusion
1
Compounds
This standard is issued under the fixed designation D707; 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.
This standard has been approved for use by agencies of the Department of Defense.
NOTE 1—There is no equivalent or similar ISO standard.
1. Scope*
1.1 This specification covers requirements for plasticized
2. Referenced Documents
cellulose acetate butyrate thermoplastic compounds suitable
2
2.1 ASTM Standards:
for injection molding and extrusion. These compounds have a
D149 Test Method for Dielectric Breakdown Voltage and
butyryl content less than 38 % and an acetyl content less than
Dielectric Strength of Solid Electrical Insulating Materials
15 % and may or may not contain dyes and pigments. This
at Commercial Power Frequencies
specification does not include special materials compounded
D256 Test Methods for Determining the Izod Pendulum
for special applications. Cellulosic plastic materials, being
Impact Resistance of Plastics
thermoplastic, are reprocessable and recyclable. This specifi-
D257 Test Methods for DC Resistance or Conductance of
cation allows for the use of those cellulosic materials, provided
Insulating Materials
that all specific requirements of this specification are met.
D570 Test Method for Water Absorption of Plastics
1.2 The properties included in this specification are those
D618 Practice for Conditioning Plastics for Testing
required to identify the compositions covered. There may be
D635 Test Method for Rate of Burning and/or Extent and
other requirements necessary to identify particular character-
Time of Burning of Plastics in a Horizontal Position
istics important to specialized applications. These may be
D638 Test Method for Tensile Properties of Plastics
specified by using the suffixes as given in Section 5.
D790 Test Methods for Flexural Properties of Unreinforced
1.3 This classification system and subsequent line call out
and Reinforced Plastics and Electrical Insulating Materials
(specification) are intended to provide a means of calling out
D792 Test Methods for Density and Specific Gravity (Rela-
plastic materials used in the fabrication of end items or parts.
tive Density) of Plastics by Displacement
It is not intended for the selection of materials. Material
D883 Terminology Relating to Plastics
selection should be made by those having expertise in the
D1003 Test Method for Haze and Luminous Transmittance
plastic field after careful consideration of the design and
of Transparent Plastics
performance required of the part, environment to which it will
D1600 Terminology for Abbreviated Terms Relating to
be exposed, fabrication process to be employed, costs in-
Plastics
volved, and inherent properties of the material other than those
D1729 Practice for Visual Appraisal of Colors and Color
covered by this classification system.
Differences of Diffusely-Illuminated Opaque Materials
1.4 The values stated in SI units are to be regarded as
D3641 Practice for Injection Molding Test Specimens of
standard.
Thermoplastic Molding and Extrusion Materials
1.5 The following safety hazards caveat pertains only to the
D3892 Practice for Packaging/Packing of Plastics
test method portion, Section 12, of this specification. This
D4000 Classification System for Specifying Plastic Materi-
standard does not purport to address all of the safety concerns,
als
if any, associated with its use. It is the responsibility of the user
D5740 Guide for Writing Material Standards in the Classi-
of this standard to establish appropriate safety and health
fication D 4000 Format
practices and determine the applicability of regulatory limita-
tions prior to use.
1
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
2
Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2005. Published July 2005. Originally approved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 1943. Last previous edition approved in 1998 as D707 - 98. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D0707-05. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
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D707 – 05
E308 Practice for Computing
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