의미와 용도
4.1 The deterioration of insulation film is closely related to its moisture content. The water permeability test provides a way to monitor the passage of water through the coating material by changes in the dielectric constant of the coating material. When expressed in time, the test data will reflect the rate of deterioration of the coating material properties and will correlate with its expected service life as an insulating coating. The water penetration test will also provide information that will help determine a better coating thickness for a given material.
ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings
범위
1.1 This method includes determining the apparent depth rate of water penetration into the insulating coating applied to piping.
1.2 Values expressed in SI units are considered standard. 괄호 안의 값은 참고용입니다..
1.3 This standard is not intended to address all, 만약에 어떠한, safety concerns associated with its use. 적절한 안전을 확립하는 것은 이 표준 사용자의 책임입니다., 건강 및 환경 관행을 확인하고 사용 전 규제 제한의 적용 여부를 결정합니다..
1.4 This international standard is based on internationally recognized standardization principles established in the Decision on International Standards, Guidelines and Recommended Principles issued by the WTO Technical Barriers to Trade (TBT) Committee.