GB/T 17603-2017Standard practice for outdoor exposure testing of photodegradable plastics (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 17603-1998 "photolytic plastic outdoor exposure test method", compared with GB/T 17603-1998, the main The technical changes are as follows.

--- Modify the "scope" chapter of the relevant content (see Chapter 1, 1998 edition of Chapter 1);

--- Modify the "Normative references" chapter of the reference file, the relevant documents with our latest document instead (see Chapter 2, 1998 edition of Chapter 2);

--- "Sunlight" to "sun", "exposure" was revised to "exposure cycle";

--- Modify the term "save sample" to "store sample" and modify its definition (see 3.2, 1998 version 3.2);

--- "Meaning" revised as "principle", modified the "principle" chapter of the content (see Chapter 4, 1998 edition of Chapter 4), with "too Yang ultraviolet radiation exposure cycle "instead of" solar radiation exposure period ";

--- Modify the "experimental device" chapter of the content (see Chapter 5, 1998 edition of Chapter 5);

--- Revised "Radiometer" as "Radiometer", deleted the use of total radiometers in the test device "Radiometer", "Narrowband" repair Change to "narrowband" (see 5.3, 1998 version 5.3);

--- Modify "Forming and Preparation" to "Specimen Preparation" and delete the requirements for thickness dimensions in "Specimen Preparation" (see Chapter 6, 1998 edition of Chapter 6);

--- Modify the "test steps" chapter of the content, adding a detailed description of the requirements of the test steps (see Chapter 7, 1998 Version of Chapter 7);

--- Modify the "test report" chapter of the content (see Chapter 8, 1998 edition of Chapter 8).

1 Scope

This standard specifies the photolytic plastic test conditions and methods for outdoor exposure test.

This standard applies to the evaluation of photolytic plastic degradation of outdoor exposure conditions.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1040.1 Plastics - Determination of tensile properties - Part 1: General

GB/T 1040.2 Determination of tensile properties of plastics - Part 2: Test conditions for molding and extrusion of plastics

GB/T 1040.3 Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets

GB/T 2035 Plastics Terms and Definitions

GB/T 3681 plastic natural daylight weathering, solar weathering after glass filtration and Fresnel lens to accelerate solar weathering Exposure test method

GB/T 12936 solar thermal terms

GB/T 31156 solar energy resources measurement of total radiation

ISO 16014 (all sections) Plastic Volume Exclusion Chromatography Determination of Average Molecular Weight and Distribution of Polymers

3 Terms and definitions

GB/T 2035, GB/T 12936 as defined by the following terms and definitions apply to this document.

4 Principle

4.1 When photolytic plastic products are discarded as waste, they are exposed to the sun, especially to the sun's ultraviolet radiation, to oxygen, heat and water.