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ASTM F677-95(1999)

(Test Method)

Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications

Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications

SCOPE
1.1 This test method determines the resistance of encapsulating compounds to fluids or greases by measuring changes in weight (Note 1) and volume under defined conditions of time and temperature.  Note 1-To provide consistency with the usage in other ASTM test methods concerned with determining the properties of plastic materials, the terms "weight" and "weigh" are used in this test method although the units of measurement are those of mass.
1.2 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. See 8.1.  
1.3 The values stated in SI units are standard. The values in parentheses are for information only.

General Information

Status
Historical
Publication Date
09-Nov-1999
ICS
31.020 - Electronic components in general
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.01 - Electrical Insulating Products
Current Stage
Ref Project

Relations

Replaced By
ASTM F677-04 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
Effective Date
01-Mar-2004

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ASTM F677-95(1999) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic ApplicationsASTM F677-95(1999) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
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ASTM F677-95(1999) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: F 677 – 95 (Reapproved 1999)
Standard Test Method for
Fluid and Grease Resistance of Thermoset Encapsulating
Compounds Used in Electronic and Microelectronic
Applications
This standard is issued under the fixed designation F 677; 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 time. The weight and volume of each specimen is measured
before and after immersion and percent change is reported.
1.1 This test method determines the resistance of encapsu-
4.2 The fluids and greases to be used as test media (8.3) are
lating compounds to fluids or greases by measuring changes in
not specified by the test method and shall be agreed to by the
weight (Note 1) and volume under defined conditions of time
parties to the test.
and temperature.
NOTE 1—To provide consistency with the usage in other ASTM test 5. Significance and Use
methods concerned with determining the properties of plastic materials,
5.1 Fluids and greases in contact with encapsulating com-
the terms “weight” and “weigh” are used in this test method although the
pounds may adversely modify the encapsulant properties with
units of measurement are those of mass.
resulting damage or loss of protection to components in
1.2 This standard does not purport to address all of the
electronic applications.
safety concerns, if any, associated with its use. It is the
5.2 This test method provides a means for measuring the
responsibility of the user of this standard to establish appro-
effect of fluids and greases on various encapsulants.
priate safety and health practices and determine the applica-
5.3 This test method is intended for use in research and
bility of regulatory limitations prior to use. See 9.1.
evaluation.
1.3 The values stated in SI units are standard. The values in
parentheses are for information only.
6. Interferences
6.1 Test results obtained with molded or cast specimens of
2. Referenced Documents
filled encapsulating compounds will differ from those obtained
2.1 ASTM Standards:
with cut or machined specimens (because of exposed fillers in
D 1193 Specification for Reagent Water
the latter).
D 1711 Terminology Relating to Electrical Insulation
6.2 Lack of complete contact between the test medium and
D 5423 Specification for Forced-Convection Laboratory
the surfaces of the specimen may seriously affect the results of
Ovens for Evaluation of Electrical Insulation
the test.
D 6054 Practice for Conditioning Electrical Insulating Ma-
6.3 Some encapsulants may be affected by the reagents
terials for Testing
specified for use in removing the test media from the speci-
mens. Alternative reagents may be required, as agreed upon by
3. Terminology
the parties to the test.
3.1 See Terminology D 1711 for definitions of terms relat-
ing to electrical insulation.
7. Apparatus
7.1 Analytical Balance, capable of determining weight to
4. Summary of Test Method
the nearest 0.001 g.
4.1 Specimens of encapsulating compound are immersed in
7.2 Oven, forced-convection type meeting the requirements
fluids or greases for specified conditions of temperature and
of Specification D 5423, Type I.
7.3 Glass Dishes, of sufficient diameter for specimens to be
exposed horizontally, and of sufficient height for specimens to
This test method is under the jurisdiction of ASTM Committee D-9 on
Electrical and Electronic Insulating Materials and is the direct responsibility of
be completely covered by the test medium. A loose-fitting glass
Subcommittee D09.01 on Electrical Insulating Varnishes, Powders, and Encapsu-
cover shall be provided for each dish (see 13.3).
lating Compounds.
Current edition approved Nov. 10, 1995. Published January 1996. Originally
8. Reagents and Materials
published as F 677 – 80. Discontinued 1991 and reinstated as F 677 – 95.
Annual Book of ASTM Standards, Vol 11.01.
8.1 Use the following materials:
Annual Book of ASTM Standards, Vol 10.01.
8.1.1 Acetone.
Annual Book of ASTM Standards, Vol 10.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 677 – 95 (1999)
8.1.2 Distilled Water—Type III Reagent Water as defined in 13.4 Remove the specimens from the oven for measurement
Specification D 1193. and observation after cumulative exposure times of 24 62h(1
8.1.3 Isopropyl Alcohol. day), 168 6 2 h (7 days), and 336 6 2 h (14 days).
8.2 Filter Paper, medium retention and medium filtering 13.4.1 Remove the assembled test specimens from the oven
and allow them to cool to room temperature for 30 to 60 min,
speed, free of lint or foreign material.
before conducting measurements and observations as follows:
8.3 Test Media—agreed-upon fluids or greases.
13.4.1.1 Remove specimens one at a time from the test
medium, saving the test medium in the glass dish or other
9. Safety Precautions
convenient noncontaminating vessel. Remove (and save) high-
9.1 Some encapsulating compounds are known to contain
viscosity fluids and greases from the specimen with a spatula.
toxic components, and special precautions are required in
Wipe with a lint-free filter paper before dipping the specimen
handling. Follow manufacturer’s precautionary instructions
in acetone.
and sound laboratory safety practices.
13.4.1.2 Dip each specimen quickly into acetone to remove
the remaining test medium and blot with filter paper (see 6.3).
10. Sampling
13.4.1.3 Within 1 min after removing the specimen from the
10.1 Because of the diverse nature of the encapsulating
test medium, weigh the specimen in air to the nearest 0.001 g
compounds, and the various forms and packages of resin,
and record the value as W .
hardeners, catalysts, etc. commercially available, no standard
13.4.1.4 Immerse each specimen in distilled water,
...

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1.5 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
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1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
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ASTM
ASTM D5643/D5643M-06(2024)(Specification)
Standard Specification for Coal Tar Roof Cement, Asbestos Free

ABSTRACT
This specification covers coal tar roof cement suitable for trowel application in coal tar roofing and flashing systems. The chemical composition of coal tar roof cement shall conform to the requirements prescribed. The water, non-volatile matter, insoluble matter, behaviour at 60 deg. C, adhesion to wet surfaces, and flash point shall be tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers coal tar roof cement suitable for trowel application in coal tar roofing and flashing systems.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
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