ASTM D4587 PDF

This standard depicts the selection of the test conditions that are required for the execution an accelerated aging that investigate, through a UV exposure, the effects of humidity, heat and sunlight on the physical and optical properties of the sample. Moreover, the preparation of the specimen and the evaluation of the results are aspects which are also detailed in the present practice. The rationale is that polymer materials have a tendency to have an alteration of its attributes after it has been exposed for long period of time to the effects of sunlight, humidity and heat. Hence, by inducing propriety changes on the sample, on an accelerated basis, it is possible to foresee the performance of the specimen in its end-use conditions through the use of an acceleration factor.

Author:Shakanos Voodooll
Country:Cambodia
Language:English (Spanish)
Genre:Marketing
Published (Last):21 January 2018
Pages:296
PDF File Size:5.21 Mb
ePub File Size:13.22 Mb
ISBN:327-3-32746-250-4
Downloads:65178
Price:Free* [*Free Regsitration Required]
Uploader:Faezil



This standard describes the selection of the test conditions required for an accelerated aging through UV testing and it also covers the preparation of the specimen and the evaluation of the results. Consequently, this method allows to investigate the effects of humidity, heat and sunlight on the physical and optical attributes of the sample.

Click and Receive a quote within the next 4 hours. Fluorescent UV-Condensation exposures of paint and related coatings—use and factors to consider: The purpose of this test protocol is to determine the repercussions of sunlight, moisture and heat on the specimen and to assess its ability to retain its attributes. In order to characterize this capacity, it is necessary to induce property changes in the sample on an accelerated basis through UV testing.

It is by choosing the appropriate operating conditions of the apparatus that it is possible to study the evolution of the characteristics of the coating on an accelerated pace and the collected data can be used to project the performance of the sample through the use of an acceleration factor. Moreover, it is necessary to periodically evaluate the test material in order to follow the trend of changes in the attributes over time. However, this standard is not suitable to characterize the decaying induced by localized weather phenomena such as: atmospheric pollution, biological attack, and salt water exposure.

The main factors that are to be considered when running this test are: the time of exposure and the temperature.

Typical Experimental parameters for ASTM D testing: The number of samples required is of at least three and the typical test conditions are listed in table 1.

ABB 266GSH PDF

Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892

This standard describes the selection of the test conditions required for an accelerated aging through UV testing and it also covers the preparation of the specimen and the evaluation of the results. Consequently, this method allows to investigate the effects of humidity, heat and sunlight on the physical and optical attributes of the sample. Click and Receive a quote within the next 4 hours. Fluorescent UV-Condensation exposures of paint and related coatings—use and factors to consider: The purpose of this test protocol is to determine the repercussions of sunlight, moisture and heat on the specimen and to assess its ability to retain its attributes. In order to characterize this capacity, it is necessary to induce property changes in the sample on an accelerated basis through UV testing. It is by choosing the appropriate operating conditions of the apparatus that it is possible to study the evolution of the characteristics of the coating on an accelerated pace and the collected data can be used to project the performance of the sample through the use of an acceleration factor.

INTEL NH82801FBM PDF

ASTM D4587-05测试标准

Additional exposure cycles are described in Practice G B The irradiance set point given is typical for devices operated without irradiance control. Other irradiance levels may be used, but must be described in the report. C Previous editions of Practice D contained non-mandatory irradiance set points in Table 1 that were commonly used in the industry. The previous set points were 0.

Related Articles