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 Standard Practice for Heat Aging of Plastics Without Load – ASTM D Status: Withdrawn ยท Replaced by: ASTM D Buy this standard.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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Standard Practice for Heat Aging of Plastics Without Load

Different properties, mechanical or electrical, may not change at the same rate. 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.

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The property of interest is measured at room temperature. Certain materials are susceptible to the influence of humidity.

Arrhenius principles x3045 only be used to accelerate a chemical mechanism if there are no fundamental changes in the material properties. For instance, the arc resistance of thermosetting compounds improves up to the carbonization point of the material. This standard is not included in any packages. You may delete a document from your Alert Profile at any time. Errors in exposure are cumulative with time. With x3045 and highly crystalline polymers, elevated temperatures may cause significant changes to the morphology of the material, invalidating or compromising that assumption.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Standards Subsctiption may be the perfect solution. We have no amendments or corrections for this standard. Add to Alert PDF. On the contrary, this practice is designed to provide data which can be used for such comparative purposes.

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As the voice of the U. Only the procedure for heat exposure is specified. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

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

Factors that s3045 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. However, extended periods d3405 exposure of plastics to elevated temperatures will generally cause some degradation, with progressive changes in physical properties. Mechanical properties, such as flexural properties, are sensitive to heat degradation and may change at a more rapid rate.

Normally, additional shrinkage should be expected with loss of volatiles or advance in polymerization. Your Alert Profile lists the documents s3045 will be monitored. 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 lower temperature are also described; the applicability of the Arrhenius relation for making predictions to other temperatures, is assumed in this case.

The effect of elevated temperature on any particular property is determined by selection of the appropriate test method and test specimens for that property.

The effect of elevated temperature on any particular property is determined by selection of the appropriate test method and test specimens for that property. Subscription pricing is determined by: Already Subscribed to this document. Caution should be exercised in using the Asgm relation and knowledge of physical changes in the material at elevated temperatures is important. Historical Version s – view previous versions of standard.

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Only the procedure for heat exposure is specified.

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

Specific properties and failure or lifetime criteria for these properties are typically chosen for the evaluation of thermal endurance. Need more than one copy? Ultimate properties such as strength or elongation are more sensitive to degradation than bulk properties such as modulus, in most cases. These transitions should be avoided both in the range of aging temperatures used, as well as in extrapolation satm the lifeline.

This standard is also available to be included in Standards Subscriptions. This standard and ISO address the same subject satm but differ in technical content.

The severity of the exposures in both time and temperature determines the extent and type of change that takes place.

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 lower temperature are also described; the applicability of the Arrhenius relation for making predictions to other temperatures, is assumed in this case.

Work Item s – proposed revisions of this standard. Other types of plastics become soft and sticky, either due to sorption of volatilized plasticizer or due to breakdown of the polymer. The property of interest is measured at room temperature. This standard and ISO address the same subject matter but differ in technical content.

If the document is revised or amended, e3045 will be notified by email.