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ASTM D Standard Practice for Heat Aging of Plastics Without Load 1 1 x00a0 This practice is intended to define the exposure conditions for evaluating. Standard Practice for Heat Aging of Plastics Without Load – ASTM D Status: Withdrawn ยท Replaced by: ASTM D Buy this standard. Price: . ASTM D(). Standard Practice for Heat Aging of Plastics Without Load. standard by ASTM International, 03/15/ This document has been.

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The property of interest is measured at room temperature.

Mechanical properties, such as flexural properties, are sensitive to heat degradation and may change at a more rapid rate. Please first verify your email before subscribing to alerts.

Ultimate properties such as strength or elongation are more sensitive to degradation than bulk properties such as modulus, in most cases. Arrhenius principles may only be used to accelerate a chemical mechanism if there are no fundamental changes in the material properties. With semi-crystalline and highly crystalline polymers, elevated temperatures may cause significant changes to the morphology of the material, invalidating or compromising that assumption.

We have no amendments or corrections for this standard. Certain materials are susceptible to the influence of humidity.

Recommended procedures for determining the thermal aging characteristics of a material using a series of elevated temperatures for the purpose of estimating endurance s3045 to a defined property change at a lower temperature are also described; the applicability of the Arrhenius relation for making predictions to other temperatures, is assumed in this case.

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Historical Version s – view previous versions of standard.

A plastic material is not necessarily degraded by exposure to elevated temperatures. Proceed to Checkout Continue Shopping. The property of interest is measured at room temperature. D30455 standard is also available to be included in Standards Subscriptions.

Standard Practice for Heat Aging of Plastics Without Load

The effect of elevated temperature on any particular property is determined by selection of the appropriate test method and test specimens for that property. Add to Alert PDF. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not d33045 as part of the standard. Other types of plastics become soft and sticky, either due to sorption of volatilized plasticizer or due to breakdown d30455 the polymer.

Factors that affect the reproducibility of data are the degree of temperature control of the enclosure, humidity of the oven, air velocity over the specimen, and period of exposure.

These transitions should be avoided both in the range of aging temperatures used, as well as in extrapolation of the lifeline. On the contrary, this practice is designed to provide data which can be used for such comparative purposes. Already Subscribed to this document. It is the responsibility of the user of this standard to establish appropriate safety, health, and xstm practices and determine the applicability of regulatory limitations prior to use.

Need more than one copy? The effect of elevated temperature on any particular property is determined atsm selection of the appropriate test method and test specimens for that property. Different properties, mechanical or electrical, may not change at the same rate.

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ASTM D – 18 Standard Practice for Heat Aging of Plastics Without Load

This standard and ISO address the same subject matter but differ in technical content. Work Item s – proposed revisions of this standard. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Subscription pricing is determined by: Normally, additional shrinkage should be expected with loss of volatiles or advance in polymerization.

Caution should be exercised in using the Arrhenius relation and knowledge of physical changes in the material at elevated temperatures is important. This standard is not included in any packages.

ASTM D – Standard Practice for Heat Aging of Plastics Without Load

Link to Active This link will always route to the current Active version of the standard. Recommended procedures for determining the thermal aging characteristics of a material using a series of elevated temperatures for the purpose of estimating endurance time to a defined property change at a aatm temperature are also described; the applicability of the Arrhenius relation for making predictions to other temperatures, is assumed in this case.

Please first log in with a verified email before subscribing to alerts. Therefore, for any application of the CUT or the TI temperature index to be valid, either the thermal aging program must duplicate the intended thermal exposure conditions of the end product, or the Arrhenius relation must apply.

This standard and ISO address the same subject matter but differ in technical content.