DENSIFICATION OF KAPOK WOOD (CEIBA PENTANDRA L. GAERTN) AND ITS RADIATION CURING OF SURFACE COATINGS USING ULTRA-VIOLET
| Main Author: | Danu, Sugiarto; Pusat Aplikasi Teknologi Isotop dan Radiasi (PATIR)-BATAN Jl. Cinere Pasar Jumat No. 49, Kotak Pos 12440, Jakarta |
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| Other Authors: | PATIR - BATAN |
| Format: | Article application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
BATAN
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| Online Access: |
http://jurnal.batan.go.id/index.php/jsmi/article/view/741 |
Daftar Isi:
- Densification and surface coating of kapok wood (Ceiba pentandra L. Gaertn ) have been conducted by pressing and followed by radiation curing of surface coatings using Ultra Violet (UV) light. Pressing was performed to get thickness reduction level of 15, 30, 45, 60 and 75 %. Coating was conducted using unsaturated polyester resin after mixing with 2,2-dimethyl-2-hydroxy acetophenone photoinitiator at concentration level of 1, 2 and 3 %b.w and titanium dioxide pigment. Irradiation was carried out at conveyor speed of 1, 2 and 3 m/minute. Pressing of wood up to 75% thickness reduction resulted in increasing of density significantly and decreasing of thickness swelling. At variation of photoinitiator concentration and conveyor speed used, the coating had pendulum hardness of 23-37 seconds, color value (white) with L = 61-79 %, gloss (60o) = 16-56 %, adhesion met the ASTM standard and resistant to chemicals and solvents used except against 10 % sodium hydroxide solution.Keywords: Densification, Ceiba pentandra L. Gaertn wood, Surface coatings, Ultra Violet radiation