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GB/T 7142-2002 PDF English

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GB/T 7142-2002: Determination of time-temperature limits for plastic after prolonged exposure to heat
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GB/T 7142: Historical versions

Std IDVersionUSDBuyDeliver [PDF] inTitle (Description)
GB/T 7142-2002English339 Add to Cart 3 days [Need to translate] Determination of time-temperature limits for plastic after prolonged exposure to heat
GB/T 7142-1986English199 Add to Cart 2 days [Need to translate] Determination of time-temperature limits of plastics after exposure to prolonged action of heat

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Basic data

Standard ID GB/T 7142-2002 (GB/T7142-2002)
Description (Translated English) Determination of time-temperature limits for plastic after prolonged exposure to heat
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G31
Classification of International Standard 83.080.01
Word Count Estimation 13,185
Date of Issue 2002-05-29
Date of Implementation 2002-12-01
Older Standard (superseded by this standard) GB/T 7142-1986
Quoted Standard GB/T 2918-1998; GB/T 7141-1992
Adopted Standard ISO 2578-1993; MOD
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies: To evaluate the long-term heat exposure after plastic by heat resistance principles and methods. The standard uses heat resistance term applied to be in the air test. This standard does not apply to the sample in a non-air environments, and/or applied stress heat resistance evaluation. The Standard plastic thermal aging research the only basis that: thermal aging will lead to performance changes after a certain time. To be studied performance is usually conducted in the aging temperature returns to room temperature after the test side. In the thermal aging process. Plastics a variety of performance is different rate change -. Able to compare various plastics Thermal aging properties, judge standard depending on the need to study Performance type and permissible limits. In this standard applications, IN set at a predetermined desired performance variations due to time corresponding to the number and approximate linear relationship exists between the reciprocal of the absolute temperature (Arrhenius law). In the study of the temperature range, were tested plastic should change occurs, especially the level change.

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