ASTM D4329 PDF

This test method also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. ASTM D use and factors to be considered Polymers can have their mechanical, electrical and optical properties significantly altered when exposed under outdoor conditions such as light, heat and water. This method is intended to prompt property changes associated with end-use conditions, including the effects of daylight, moisture in addition to heat. The simulation of the deterioration provoked by localized weather, such as, atmospheric pollution, biological attack, and saltwater exposure is not intended by the exposure used in this practice. Size and shape: Will be determined by the specifications of the test method used to gauge the effects of the exposure on the samples. It is advised that specimen be sized to fit specimen holders, when possible.

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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.

The values given in brackets are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Terminology 3. Significance and Use 4. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.

The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Warning—Variation in results may be expected when operating conditions are varied within the accepted limits of this practice.

Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specific operating conditions used. Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results.

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

A number in parentheses indicates the year of last reapproval. Thispractice also covers the preparation of test specimens, the testconditions best suited for plastics, and the evaluation of testresults. The values given in parentheses are for informationonly. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Referenced Documents2. Significance and Use4. This practice is intended to induce propertychanges associated with end-use conditions, including theeffects of ultraviolet solar irradiance, moisture, and heat.

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ASTM D4329-05测试标准

More D This practice is intended to induce property changes associated with end-use conditions, including the effects of ultraviolet solar irradiance, moisture, and heat. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Warning—Variation in results may be expected when operating conditions are varied within the accepted limits of this practice. Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specific operating conditions used. Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice. Note 2—Additional information on sources of variability and on strategies for addressing variability in the design, execution, and data analysis of laboratory-accelerated exposure tests is found in Guide G

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ASTM D4329

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. The values given in brackets are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Terminology 3. Significance and Use 4.

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