意味と使い方

3.1 塗膜の変色や劣化の主な原因は微生物の繁殖です. This guide describes the techniques used to distinguish fungi and algae from other surface contaminants.

3.2 Recoating a surface contaminated with fungus or algae usually results in a more rapid infestation of the new paint than repainting a surface that has been removed from fungal or algal growth. 加えて, poor adhesion, staining/bleeding, and many other problems may result. This guide describes ways to remove fungal or algal growth before repainting.

注記 1: It is important to read and follow all steps and notes. 特に, the washing steps outlined in 5.2.2 そして 5.2.4 need to be carried out completely, as residual sodium hypochlorite (bleach) can cause many of the same problems, or even lose coloring after repainting, and residual phosphate detergents can further promote fungal and algal growth.

注記 2: This procedure is suitable for recoating surfaces. Reports of using this procedure to remove fungi and algae without recoating need to include a warning about the adverse effects of bleach on the coating. The oxidation of bleach will reduce the performance of the film, especially the “bleaching” (color loss) in the film containing organic pigments (such as quinacridone, 等), the reduction of gloss, 粉, 等. Small patches need to be tested before using this program for this purpose.

ASTM D4610-1998 微生物の増殖と除去を測定するための標準ガイド (菌類または藻類) 塗料および関連コーティングについて

ステップ 1: 範囲

1.1 This guide describes techniques for determining the presence of fungal or algal growth on paints and related coatings, and methods for removing such growth prior to recoating.

1.2 SI 単位で表される値は標準とみなされます。. 括弧内の値は参考値です。.

1.3 この規格は、すべての安全上の懸念に対処することを目的としたものではありません, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格のユーザーの責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.4 この国際規格は、国際的に認められた標準化原則に基づいており、 “国際標準開発原則の決定, ガイドラインと推奨事項” 貿易の技術的障壁に関する委員会が発行 (未定) 世界貿易機関の.