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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan" : 2 Documents clear
PENGARUH KOMPOSISI PEREKAT FENOL FORMALDEHIDA TERHADAP.KETEGUHAN REKAT KAYU LAPIS SENGON Memed, Rodjak; Santoso, Adi; Sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1710.446 KB) | DOI: 10.20886/jphh.1990.8.3.106-108

Abstract

In the future. phenol formaldehyde resin will be used in greater quantity due to ita capability inproducing weather and boil•proof plytDood. This paper discribet two aapects, i.e. :  the effect of weight ratio of phenol and formaldehyde on the propemea  of phenol formaldehyde  resin and plywood  bonding strength; and the effect of filler proportion on the bond.inf ltrength of se111on plywood glued with phenol formaldehyde.77ae resulta showed that the properties of phenol formaldehyde resin which were produced in three different com- positions were met  Indonesian Standard. The effect of filler proportion on plywood  bonding strenfth waa significant, but the effect  of  weight ratio of phenol  formaldehyde and their interaction were not significant. The bond.inf strength of plywood  glued .with phenol  formaldehyde at 1111  compositio1u were conformed   with German standard for exterior ply- wood. The_ rwlati_onship between filler proportion and plywood  bonding strength could be exprwued by quadratic regreBBion.
PEMUTlHAN KAYU DUN.JING (PARASERIANTHES FALCATARIA (L.) NIELSEN). DENGAN METODA RENDAM DAN LABUR Rulliaty, Sri
Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2173.239 KB) | DOI: 10.20886/jphh.1990.8.3.100-104

Abstract

Tlae effect of chemical concentration and method of bleaching on the wood quality  i8 reported in thia paper. The mmpla   material co,..;.tetl of 40 piet:u jeur4/ing wood (Partueriantha  (alcataria (L.) Nisllen.) meauri"I J cm by 2 cm by 30 cm rapectiwly~ AU 1amplu  UJmt   divided  into  aeuen group& The /int   three grou,,.  were 1oaked in Ozalic acid and Sodium layd,._ib  iolutlone of  l"     SS   and BA rapecti~ly.  The aecond three ttrouDI were aleo malled in. Hydrogen perozide and Sodium hydrozide  eolutione of the above .concentration&  The lat  one group roae lmlalaed  with 8<H> Hydro- gen perozide  and  10~  Sodium  hydrozide  iolutione.   Variable rapona    oMrwd    were brilhtnea,  chemical compound penetration,  occurrence of fuzzy   grain and compreaion parallel to the grain.                                         •The raulb   ,..,led. that .ioalrlng  of jeur4Ji1111 wood in Hydrogen perozide and Sodium hydrozide  at 6~  concentra• tion  ahowed the bat   brWhtnea, a  well a  bruahi1111 with  the mme chemical compound at 30CJ, and 1 ~   concentration retpeetively.  The  taJer018 •peMtration  of  tlaae  chemieal compounda into  wood aubdrwte roere J  mm. M•anwhik; the eoaking method in O:callc acid and Sodium hydrozide  decreaeedthe compreesionparallel to the grain aignificantly. p;,,,...thermore the chemical compou~ """d for  bleaching the jeu.,,,ii11/l wood did not affect (uny    grain defect.

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