ASTM D4329 PDF

ASTM D tests for fluorescent UV exposure of plastics. It covers specific procedures and test conditions based on practices ASTM G and ASTM G This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D on Plastics. 7 Jun ASTM D – Designation: D – 05 Standard Practice for Fluorescent UV Exposure of Pla.

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Moisture is provided by forced condensation, and temperature is controlled by heaters. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation asfm test results.

Note 2 — Additional information d432 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 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.

Up to 20 test samples are mounted in the QUV and subjected to a cycle of exposure to intense ultraviolet radiation followed by moisture exposure by condensation.

ASTM D – UV EXPOSURE OF PLASTICS

No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration. Hemispherical on 37 Tilted Surface. These cycles would be continued for extended periods of awtm – up to thousands of hours – simulating even longer periods of time in the real world.

The standard sample holders can hold one sample 3 x 12 inches 75 x mm or two samples 3 x 6 inches 75 x mm. Auditing Consulting Sourcing Training.

Astmm values given in parentheses 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. Certification Formally confirming that your products and asgm meet all trusted external and internal standards.

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Historical Version s astmm view previous versions of standard. Need help or have a question? Standards can be obtained from appropriate standard authorities. A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. Typically, flat plaques or disks are used for accelerated weathering studies. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

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

Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

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.

Formally confirming that your products and services meet all trusted external and internal standards. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. Warning— Variation in results may be expected when operating conditions are varied within the accepted limits of this practice.

Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.

Send us a request Wilton UK: Often several exposure times such as, and hours also will be compared to qstm other. Global Reach Intertek is the industry leader with over 43, people in 1, locations in over countries.

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Parts may be accommodated depending on size. Inspection Validating the specifications, value and safety of your raw materials, products and assets.

Send us a request Need help qstm have a question? Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Link to Active This link will always route to the current Active version of the standard.

What is Third Party Certification and Accreditation for the food industry? Accelerated weathering provides exposed samples for comparison to unexposed control samples.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Whether your business is local or global, we can ensure your products meet quality, asstm, environmental, safety, and social accountability standards for virtually any market around the world.

Significant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamp. However, performance comparisons under d3429 controlled conditions of accelerated weathering can be compared to documented performance of materials and coatings that have experienced extended periods of end use exposure.

Assurance Testing Inspection Certification. This practice is intended to induce property changes associated with end-use conditions, including the effects of ultraviolet solar irradiance, moisture, and heat. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings. Validating zstm specifications, value and safety of your raw materials, products and assets.