의미와 용도

5.1 자연 풍화 테스트에는 수년이 걸릴 수 있습니다., and accelerated weathering assessments often take weeks or months to obtain useful data. Associating board selection with desired weatherability characteristics helps paint experimenters maximize information over the desired time frame.

5.2 Because exposure testing requires a long time span, the importance of planning robust experiments while controlling for as many variables as possible cannot be overstated. 이러한 이유로, it is very important to choose a test board made of a representative wood species or composite, grade of wood and type of surface intended to be painted.

5.3 This practice can be used with any type of exterior architectural paint for wood or wood composite substrates, such as exterior paint, primer, wood colorant or water repellent.

ASTM D7787-13 건축 코팅의 내후성 평가를 위한 목재 기재 선택에 대한 표준 관행

단계 1: 범위

1.1 This practice provides guidelines for the selection of wood or wood composite substrates for evaluating specific weatherability characteristics of architectural coatings such as exterior coatings, primers and deck finishes.

1.2 The procedure includes selection of wood species and selection of individual wood test boards by visual inspection of wood characteristics.

1.3 This practice is designed to cover wood substrates commonly used in weathering research for architectural coatings. It is not intended as a comprehensive guide for all wood species and can be used to assess the weatherability characteristics of architectural coatings.

1.4 Values expressed in SI units or inch-pound units shall be treated separately as standard values. The values stated in each system may not be exactly equivalent; 그러므로, 각 시스템은 독립적으로 사용해야 합니다.. Combining values from two systems can result in non-compliance.

1.5 이 표준은 모든 안전 문제를 해결하기 위한 것이 아닙니다. (만약에 어떠한) 그 사용과 관련된. 적절한 안전 및 보건 관행을 확립하고 사용 전에 규제 제한의 적용 가능성을 결정하는 것은 이 표준 사용자의 책임입니다..