의미와 용도
4.1 광분해성 플라스틱으로 만든 재료는 태양 복사에 노출되면 급속히 품질이 저하됩니다., 산소, 열, moisture and other weather-degrading elements. This practice is used to assess the photodegradability of plastics when exposed to devices that produce simulated daylight (1,2) 6 and control temperature and humidity. The exposures used in this practice are not intended to simulate deterioration caused by local weather phenomena such as atmospheric pollution, 생물학적 공격, 그리고 바닷물 노출. Positive correlation of exposure results between this device and other laboratory aging devices is not possible.

4.2 Changes in results can be expected when operating conditions vary within the accepted limits of this practice. 그러므로, all test results using this specification need to be accompanied by the specific operating conditions required in Section 9. For more information about the precautions that apply to using results obtained under this practice, see Practice G151.

4.3 The results of laboratory exposure cannot be directly extrapolated to estimate the absolute rate of environmental degradation, as the acceleration factor depends on the material and can vary greatly for each material and different formulations of the same material. 하지만, exposure to similar materials with known outdoor properties, 통제 수단, and simultaneously with test samples allows comparison of durability under test conditions relative to controls. The evaluation of relative durability also greatly improves the consistency of test results between different laboratories (3).

4.4 Test results will depend on the degree of care taken to operate the equipment in accordance with practice G155. Important factors include regulation of line voltage, absence of salt or other water deposits, temperature and humidity control, and condition and age of burners and filters.

메모 2: 가변성의 원인과 설계의 가변성을 해결하기 위한 전략에 대한 추가 정보, 실행, and data analysis of laboratory accelerated exposure trials, see Guideline G141.

4.5 Before continuing this practice, it is common practice to refer to the specifications of the material under test. Any sample preparation, 조정, sizing, or test parameter or combination thereof covered in the Material Specification shall take precedence over the sample preparation, 조정, sizing, or test parameter or combination thereof referred to in this specification. If there is no material specification, default conditions apply.

크세논 램프 장치의 광분해성 플라스틱 노출 테스트를 위한 ASTM D5071-2022 표준 테스트 방법:

반지름
1.1 This procedure covers specific procedures and test conditions applicable to xenon arc exposure of photodegradable plastics in accordance with practices G151 and G155. The practice also includes the preparation of samples, suitable test conditions for photodegradable plastics, and evaluation of test results.

1.2 이 표준은 모든 안전 문제를 해결하기 위한 것이 아닙니다., 만약에 어떠한, 그 사용과 관련된. 적절한 안전을 확립하는 것은 이 표준 사용자의 책임입니다., 건강 및 환경 관행을 확인하고 사용 전 규제 제한의 적용 여부를 결정합니다..

메모 1: This practice is technically equivalent to ISO 4892-2 and Practice D2565, which covers xenon arc exposure of long-term plastics for outdoor applications.

1.3 이 국제 표준은 국제 표준 개발 원칙에 관한 결정에서 확립된 국제적으로 인정된 표준화 원칙을 기반으로 합니다., WTO 무역기술장벽위원회가 발행한 지침 및 권고사항.