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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Standards can be obtained from appropriate standard authorities. Accelerated weathering provides exposed samples for comparison to unexposed control samples. These cycles would be continued for extended periods of time – up to thousands of hours – simulating even longer periods of time in the real world. Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice.
The values given in parentheses are for information only. No direct correlation can be made between accelerated weathering duration and actual outdoor astn duration. A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths.
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. Often several exposure times such as, and hours also will be compared to each other.
Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Assurance Testing Inspection Certification. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. However, performance comparisons under the controlled conditions of accelerated weathering can be compared to documented performance of materials and coatings that have experienced extended periods of end use exposure.
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ASTM D | Rycobel
This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. Therefore, no reference d4239 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.
Formally confirming that your products and services meet all trusted external and internal standards. Hemispherical on 37 Tilted Surface. Send us a d4392 Need help or have a question? 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.
Validating the specifications, value and safety of your raw materials, products and assets.
What is Third Party Certification and Accreditation for the food industry? Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Typically, flat plaques or disks are used for accelerated weathering studies. 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.
Moisture is provided by forced condensation, and temperature is controlled by heaters.
Warning— Variation in results may be expected aatm operating conditions are varied within the accepted limits of this practice. This practice is intended to induce property changes associated with end-use conditions, including the effects of ultraviolet solar irradiance, moisture, and heat.
Historical Version s – view previous versions of standard. Note 2 — Additional information on sources of variability d43229 on strategies for addressing variability in the design, execution, and data analysis of laboratory-accelerated exposure tests is found in Guide G Parts may be accommodated depending on size. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.
Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892
Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Inspection Validating the specifications, value and safety of your raw materials, products and assets. 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.
Accelerated r4329 simulates damaging effects of long term outdoor exposure of materials and coatings. Send us a request Wilton UK: Link to Active This link will always route to the current Active version of the standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. Global Reach Intertek is the industry leader with over v4329, people in 1, locations in over countries. Auditing Consulting Sourcing Training. It is the responsibility of the user of this standard to asmt appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Need help or have a question? 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.