地域別暴露による木材保護着色塗料の耐候性評価  [in Japanese] Evaluation of weathering resistance of the commercial pigmented stains by outdoor exposure test in Japan  [in Japanese]

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Abstract

我が国における木材保護着色塗料の耐候性を評価するために,市販の保護着色塗料12種類をベイマツ合板及び集成材に塗装し,北海道,つくば,富山,京都,鹿児島,沖縄の6地点に屋外暴露した。保護塗料は浸透タイプと造膜タイプで劣化形態が異なり,主な劣化は浸透タイプは基材割れ,造膜タイプでは塗膜割れであった。また,マス目試験及びはっ水度試験により劣化の計数化を試みたが,造膜タイプではわずかな劣化でも塗装面の美観を大きく損ねた。地域別では,鹿児島が最も劣化が激しく,北海道で小さかったが他の地域を含めた地域間での差はそれほど大きくなかった。集成材では,浸透タイプにおいて暴露3.5年後には賭層の70%以上で割れカゴ生じ,その最大深さは約7mmであった。

The weatiering resistance of twelve commercial pigmented stains on Douglas-fir plywood and glulam (glue laminated timber) was evaluated by exposing coated specimens at six test sites (Hokkaido, Tsukuba, Toyama, Kyoto, Kagoshima, and Okinawa) in Japan. The stains which were of two types, penetration and film forming, differed in their mode of failure during exposure. The penetration type failed through the development of cracks in the wood surface whereas the film forming type failed via film failure. Deterioration of coated wood surfaces was evaluated by calculation on a defected area using transparent squared sheet and a water repellency test. In the case of the film forming stains the development of even a small defect in the film affected the appearance of the treated wood surface. Kagoshima was the most severe site for the exposure tests whereas Hokkaido was the least severe. one However, differencs between the exposure sites were not great. Glue line failure occurred in more than 70% of the glulam specimens after 3.5 years exposure and the maximum depth of delamination was approximately 7 mm.

Journal

  • MOKUZAI HOZON (Wood Protection)

    MOKUZAI HOZON (Wood Protection) 22(3), 150-158, 1996-05-25

    JAPAN WOOD PRESERVING ASSOCIATION

References:  5

Cited by:  4

Codes

  • NII Article ID (NAID)
    10028290870
  • NII NACSIS-CAT ID (NCID)
    AN00240373
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02879255
  • NDL Article ID
    4012718
  • NDL Source Classification
    ZP21(科学技術--化学・化学工業--木材)
  • NDL Call No.
    Z17-745
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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