ASTM-D6289 1998

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D6289-98 Standard Test Method for Measuring Shrinkage from Mold Dimensions of Molded Thermosetting Plastics

Published By	Publication Date	Number of Pages
ASTM	1998	11

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Categories: 83.080.10 - Thermosetting materials, ASTM

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Description

1.1 This test method is intended to measure batch-to-batch uniformity in initial shrinkage from mold to molded dimensions of thermosetting materials when molded by compression, injection, or transfer under specified conditions.

1.2 This test method provides for the measurement of shrinkage of thermosetting plastics from their molds both initially (within 16 to 72 h of molding) and as they age (post-shrinkage at elevated temperatures).

1.3 Knowledge of the initial shrinkage of plastics is important for the construction of molds and knowledge of post molding shrinkage is important for determining the suitability of the molding material for manufacturing thermosetting plastic components with accurate dimensions.

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.

Note 1-This test method and ISO 2577-1984 are equivalent when bars of 120 mm length, 15 mm width, and 10 mm thickness are used for compression molding; or flat, square plaques approximately 120 by 120 by 4 mm are used for injection molding.

Additional information

Standard Title	D6289-98 Standard Test Method for Measuring Shrinkage from Mold Dimensions of Molded Thermosetting Plastics
Published Code	ASTM
Publication Date	1998
Pages Count	11
ICS Codes	83.080.10 - Thermosetting materials

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ASTM-D6289 1998

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