1 Scope
1.1 This part provides information and general guidance relevant to the selection and operation of the methods of exposure described in detail in subsequent parts. It also describes and recommends procedures for determining irradiance and radiant exposure. Requirements for devices used to monitor chamber air temperature and surface temperature of dark and light materials are also described.
1.2 This part also provides information on the interpretation of data from accelerated exposure tests. More specific information about methods for determining the change in plastic properties after exposure and reporting these results is described in ISO 4582.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2918-1998 Plastics — Standard Atmospheres for Conditioning and Testing (idt ISO 291:1997)
GB/T 16422.2-1999 Plastics — Methods of Exposure to Laboratory Light Sources — Part 2: Xenon-arc Sources (idt ISO 4892-2:1994)
GB/T 16422.3-1997 Plastics — Methods of Exposure to Laboratory Light Sources — Part 3: Fluorescent UV Lamps (eqv ISO 4892-3:1994)
GB/T 16422.4-1996 Plastics — Methods of Exposure to Laboratory Light Sources — Part 4: Open-flame Carbon-arc Lamps (eqv ISO 4892-4:1994)
GB/T 17037.1-1997 Injection Moulding of Test Specimens of Thermoplastic Materials — Part 1: General Principles and Moulding of Multipurpose and Bar Test Specimens (idt ISO 294-1:1996)
GB/T 17037.3-2003 Plastics — Injection Moulding of Test Specimens of Thermoplastic Materials — Part 3: Small Plates (idt ISO 294-3:2002)
ISO 293:1986 Plastics — Compression Moulding Test Specimens of Thermoplastic Materials
ISO 294-2:1996 Plastics — Injection Moulding of Test Specimens of Thermoplastic Materials — Part 2: Small Tensile Bars
ISO 295:1991 Plastics — Compression Moulding of Test Specimens of Thermosetting Materials
ISO 2557-1:1989 Plastics — Amorphous Plastics — Preparation of Test Specimens with a Specified Maximum Reversion — Part 1: Bars
ISO 2818:1994 Plastics — Preparation of Test Specimens by Machining
ISO 3167:1993 Plastics — Multipurpose Test Specimens
ISO 4582:1993 Plastics — Determination of Changes in Colour and Variations in Properties after Exposure to Daylight under Glass, Natural Weathering or Laboratory Light Sources
ISO 9370:1997 Plastics — Instrumental Determination of Radiant Exposure in Weathering Tests — General Guidance and Basic Test Method
CIE Publication No. 85:1989 Solar Spectral Irradiance
3 Terms and Definitions
For the purposes of this part of GB/T 16422, the following terms and definitions apply.
Foreword II
Introduction IV
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Requirements for Laboratory Exposure Devices
6 Test Specimens
7 Test Conditions and Procedure
8 Precision and Bias
9 Test Report
Annex A (Informative) Factors that Decrease the Degree of Correlation between Accelerated Tests Using Laboratory Light Sources and Actual-use Exposures
Annex B (Normative) Procedures for Measuring the Irradiance Uniformity in the Specimen Exposure Area
