ASTM-D8336 2021

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D8336-21 Standard Test Method for Characterizing Tack of Prepregs Using a Continuous Application-and-Peel Procedure

Published By	Publication Date	Number of Pages
ASTM	2021

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Category: ASTM

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Description

ASTM D8336-21

Historical Standard: Standard Test Method for Characterizing Tack of Prepregs Using a Continuous Application-and-Peel Procedure

ASTM D8336

Scope

1.1 This test method covers measurement of adhesion (tack) between partially cured (B-staged) composite prepreg and a substrate in a peel test, under specified conditions. The test may be conducted to measure tack between a flexible layer of prepreg and another prepreg layer bonded to a rigid substrate (Method I) or a rigid metal substrate (Method II). This test method is primarily geared towards material characterization for automated material layup but can be modified for use with other processes. It is well known that material tack is a function of multiple processing and environmental variables. Permissible composite prepreg materials include carbon, glass, and aramid fibers within a B-staged thermoset resin.

1.2 Measured tack is specified in terms of a peel force at a given specimen width.

1.3 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.4 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.

1.5 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.

Keywords

adhesion; automated layup; peel test; prepreg;

ICS Code

ICS Number Code 83.120 (Reinforced plastics)

DOI: 10.1520/D8336-21

Additional information

Standard Title	D8336-21 Standard Test Method for Characterizing Tack of Prepregs Using a Continuous Application-and-Peel Procedure
Published Code	ASTM
Publication Date	2021