ASTM C1442-14
Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus

Standard No.

ASTM C1442-14

Release Date

2014

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C1442-14(2021)

Latest

ASTM C1442-14(2021)

Scope

5.1 This practice determines the effects of actinic radiation, elevated temperature, and moisture on sealants and their constituents under controlled laboratory artificial weather test conditions.

5.2 When conducting exposures in devices which use laboratory light sources, it is important to consider (1) how well the artificial test conditions will reproduce property changes and failure modes caused by end-use environments on the sealant being tested and (2) the stability ranking of sealants. Refer to Practice G151 for full cautionary guidance regarding laboratory weathering.

5.3 Because of differences in the spectral power distributions of the exposure sources (xenon arc, fluorescent UV lamps, and open flame carbon arc), as well as other conditions used in the three types of laboratory weathering tests, including temperature, type and amount of moisture, and test cycles, these three procedures may not result in the same performance ranking or types of failure modes of sealants. Further, different exposure durations may be required for testing the weathering performance of sealants by the three types of exposures. Comparisons should not be made of the relative stability of sealants exposed in the different types of apparatus.

5.4 Variations in results may be expected when operating conditions are varied within the accepted limits of this practice. Therefore, all test results using this practice must be accompanied by a report of the specific operating conditions as required in Section 10. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained according to this practice.

5.5 No laboratory exposure test can be specified as a total simulation of actual use conditions in outdoor environments. The relative durability of materials in actual use conditions can vary in different locations because of differences in UV radiation, time of wetness, relative humidity, temperature, pollutants, and other factors. Results obtained from these laboratory accelerated exposures can be considered as representative of actual use exposures only when the degree of rank correlation has been established for the specific materials being tested and when the failure mode is the same. Exposure of a similar material of known outdoor performance, a control, along with the test specimens provides for evaluation in terms of relative durability under the test conditions, which also greatly improves the agreement in test results among different laboratories.

5.6 The acceleration factor relating the exposure time in a laboratory accelerated test to exposure time outdoors required to produce equivalent degradation is material dependent and can be significantly different for each material and for different formulations of the same material. Therefore, the acceleration factor determined for one material cannot be assumed to be applicable to other materials.

5.7 Results of this procedure will depend on the care that is taken to operate th......<......

ASTM C1442-14 Referenced Document

• ASTM C717 Standard Terminology of Building Seals and Sealants
• ASTM G113 Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
• ASTM G141 Standard Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials
• ASTM G147 Standard Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
• ASTM G151 Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
• ASTM G152 Standard Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials*， 2024-04-20 Update
• ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials
• ASTM G155 Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials*， 2024-04-20 Update
• ISO 11431 Building construction - Jointing products - Determination of adhesion/cohesion properties of sealants after exposure to heat, water and artificial light through glass

ASTM C1442-14 history

• 2021 ASTM C1442-14(2021) Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• 2014 ASTM C1442-14 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• 2011 ASTM C1442-11 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• 2006 ASTM C1442-06 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• 2003 ASTM C1442-03 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus
• 1999 ASTM C1442-99 Standard Practice for Conducting Tests on Sealants Using Artificial Weathering Apparatus