ASTM E2240-06
Standard Test Method for Assessing the Current-Voltage Cycling Stability at 90&176;C (194&176;F) of Absorptive Electrochromic Coatings on Sealed Insulating Glass Units

Standard No.

ASTM E2240-06

Release Date

2006

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 2015-01

Latest

ASTM E2240-06

Scope

This test method is intended to provide a means for evaluating the current-voltage cycling stability at 90°C (194°F) of ECWs as described in 1.2.^{2 ,4} (See Appendix X1, sections X1.4-X1.7.)

1.1 This test method covers the accelerated aging and monitoring of the time-dependent performance of electrochromic windows (ECW). Cross sections of typical electrochromic windows have three to five-layers of coatings that include one to three active layers sandwiched between two transparent conducting electrodes (TCEs, see Section ). Examples of the cross-sectional arrangements can be found in "Evaluation Criteria and Test Methods for Electrochromic Windows." (For acronyms used in this standard, see , section ).

1.2 This test method is applicable only for layered (one or more active coatings between the TCEs) absorptive electrochromic coatings on sealed insulating glass (IG) units fabricated for vision glass (superstrate and substrate) areas for use in buildings, such as glass doors, windows, skylights, and exterior wall systems. The layers used for electrochromically changing the optical properties may be inorganic or organic materials between the superstrate and substrate.

1.3 The electrochromic coatings used in this test method will be subsequently exposed (see Test Methods E 2141) to solar radiation and deployed to control the amount of radiation by absorption and reflection and thus, limit the solar heat gain and amount of solar radiation that is transmitted into the building.

1.4 This test method is not applicable to other chromogenic devices, for example, photochromic and thermochromic devices.

1.5 This test method is not applicable to electrochromic windows that are constructed from superstrate or substrate materials other than glass.

1.6 This test method referenced herein is a laboratory test conducted under specified conditions. This test is intended to simulate and, possibly, to also accelerate actual in-service use of the electrochromic windows. Results from this test cannot be used to predict the performance with time of in-service units unless actual corresponding in-service tests have been conducted and appropriate analyses have been conducted to show how performance can be predicted from the accelerated aging tests.

1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

ASTM E2240-06 Referenced Document

• ASTM C1048 Standard Specification for Heat-Treated Flat Glass--Kind HS, Kind FT Coated and Uncoated Glass
• ASTM C1199 Standard Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods
• ASTM C168 Standard Terminology Relating to Thermal Insulation
• ASTM E1423 Standard Practice for Determining the Steady State Thermal Transmittance of Fenestration Systems
• ASTM E2094 Standard Practice for Evaluating the Service Life of Chromogenic Glazings
• ASTM E2141 Standard Test Method for Accelerated Aging of Electrochromic Devices in Sealed Insulating Glass Units
• ASTM E2188 Standard Test Method for Insulating Glass Unit Performance
• ASTM E632 Standard Practice for Developing Accelerated Tests to Aid Prediction of the Service Life of Building Components and Materials (Withdrawn 2005)
• ASTM E903 Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres
• ASTM G113 Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
• CAN/CGSB 12.8 

ASTM E2240-06 history

• 2006 ASTM E2240-06 Standard Test Method for Assessing the Current-Voltage Cycling Stability at 90&176;C (194&176;F) of Absorptive Electrochromic Coatings on Sealed Insulating Glass Units
• 2002 ASTM E2240-02 Standard Test Method for Assessing the Current-Voltage Cycling Stability at 90C (194F) of Absorptive Electrochromic Coatings on Sealed Insulating Glass Units