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Rozak Memed
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PENGARUH PENYADAPAN DAN KADAR PEREKAT TERHADAP SIFAT PAPAN PARTIKEL TUSAM Rozak Memed; I M Sulastiningsih; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.3.151-156

Abstract

The  result of  a study  on  the properties   of particle  board made  from  pine  wood  is reported  in this paper.  The pine as raw material  was classified  into  three groups  i.e.  tapped,  untapped, and combination of  them. The particle  board was manufactured by using urea formaldehyde   resin with  four  levels i.e.   6%,   8%,   10%,  and 12% by weight of wood  dry  basis.The  result  reveals  that  the  average density of  particle board  made of  tapped,   untapped,   and  combination  of  them is 0.61  g/cm3,  so that  it  can be classified as medium  density  particle  board.  The properties of particle  board were affected by both  tapping  and glue proportion.   However, density  and internal bond were affected by glue proportion  but  not  by the raw material.Except for water absorption, overall properties of particle  board made  from tapped pine  appeared to have superior properties  than that from  untapped  one. 
SIFAT PAPAN WOL KAYU DARI 12 JENIS KAYU HUTAN TANAMAN INDUSTRI I M Sulastiningsih; Rozak Memed; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.4.239-245

Abstract

The results  of  laboratory  test  of  wood-wood board properties  made from  12 individual  wood species obtained  from West Java, Lampung  and East Nusa Tenggara province are reported  in this paper.  The properties tested  were board density, moisture  content,   thickness  reduction   due  to compression  and bending strength.The study  has revealed  that  Eucalyptus  urophylla  and  Eucalyptus platiphylla F.V.M.  obtained  from  natural forests are impossible  to plane  because  they  are very  hard.  The average yield  of  wood-wool   from  the  rest is 454.43 kg percubic meter  of  log input. These  wood-wool   can  be processed   to  become wood-wool boards without first  immersing  them  in cold  water.   The physical  and  mechanical  properties   of  wood-wool   boards made  from  seven  wood species  (meranti  merah I, pinus  I,  mahoni  uganda,  meranti  tembaga,  leda,  akasia and  meranti  merah II) catalyzed  with  CaCl2 solution  are in conformity with  the DIN 1101Standard.   However, only  four  wood  species  (meranti  merah  I,  meranti  tembaga, leda and meranti  merah II)  catalyzed with  Ca(OH)2 suspention meet  the standard  requirement. 
SERBUK BABAKAN AKASIA SEBAGAI PEREKAT PAPAN PARTIKEL Suwardi Sumadiwangsa; Sadan Widarmana; Ratmaja Eka Putra; Rozak Memed
Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.1.12-16

Abstract

This  work  investigates  the use of acacia  (Acacia decurrens Willds.)  bark  powder   mixed   with  paraformaldehyde as an adhesive for particleboard. The treatments included powder  contents  of 10, 12, and 14% of the oven dry  weight basis.  The paraformaldehyde   employed  has also 3 levels i.e. 20, 30, and 40%. Material used for this study  was the jeungjing (Albizia falcataria  (L.) Fosberg.) flakes.   The boards were made in the Forest Products  Research  Centre laboratory  to determine  their physical  and mechanical properties.The effect  of paraformaldehyde  content  alone on the overall particleboards  properties  was not significant.  On the other hand,  the effect  of acacia bark powder  contents  on the particle board properties were significant on water absorption, MOR  and MOE after soaking.  Those qualities were better  with higher powder  content. 
PENGARUH KADAR PEREKAT DAN CAMPURAN KULIT TERHADAP SIFAT FISIS DAN MEKANIS PAPAN PARTIKEL TUSAM (Pinus merkusii) I M Sulastiningsih; Rozak Memed; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.4.184-191

Abstract

The  laboratory   test  of  strength  properties   of pine  particleboard subtituted  with 0,  20, 40 and 60 percent of pine bark, glued  with  8, 10, and  12 percent   liquid  urea formaldehvde    (by particle  dry  weight  basis) is reported   in  this paper.  Pine  wood  and  its  bark  were obtained   from West Java.                                                                                                                                                    The result  shows  that  the substitution with  bark of  20,  40,  and  60 percent   of pine   wood  particle  improved   water absorption   and  thickness- swelling  properties;   however,  it decreased  mechanical properties of particleboard.  Particleboard with  high  bark  content   has lower  mechanical  properties   than  that  with  low  bark content.   The physical   and  mechanical properties   of  particleboard   that  is subtiuuted  with  20 and  40%  bark and  10 and  12%  urea-formaldehyde resin meet the FAO   standard   for   medium   density   particleboard,  except for,  modulus of rupture. If   we  compared  with  Indonesian standard,  the properties  that do not  meet  the standard  are the modulus  of rupture  and the internal  bond strength 
SIFAT PAPAN WOL KAYU DARI 17 JENIS KAYU IRIAN JAYA I M Sulastiningsih; Rozak Memed; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1987.4.4.48-52

Abstract

The result of laboratory tests on the properties of wood-woo/boards made from 17 wood species obtained from lrian Jaya are reported in this paper. The test comprised board density, moisture content, thickness reduction due to compression and bending strength.The study reveals that the average yield of wood-wool is 312 kg per cubic meter of log input.  The physical and mechanical properties of wood-wool boards from  five  wood species mineralized with CaCl2 solution or  Ca(OH)2 suspension are in compliance with the DIN 1101 standard. 
SIFAT PAPAN WOL KAYU DARI POHON TUSAM DISADAP DAN TIDAK DISADAP I Sulastiningsih M Sulastiningsih; Rozak Memed; Paribroto Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 2 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1988.5.2.60-67

Abstract

The  results  of  a  study on  the properties   of  wood-wool  board  made  from  tapped  and  untapped  pine   (Pinus  merkusii Jungh  et de Vriese)  is reported  in this paper.  The  wood  is obtained  from West Java.The result shows  that  hydration   temperature   of tapped  tree  is 36oC,  and untapped   pine  is  43°C. Based on this data, wood  from   tapped  pine  tree can be classified as medium  and that from  untapped  pine  as good  for wood-wool   board material. In general  the  wood-wool  board properties of  both  wood  sources  meet DIN standard.  The effect  of  tapping,  cement proportion, kind  of catalyst,  and interaction  between  cement  proportion  and kind  of catalyst  on the mechanical  properties of wood-wool board are significant.  Tapped pine  is better  than untapped  pine  as raw material for wood-wool board.
SIFAT PAPAN WOL KAYU DARI 20 JENIS KAYU KALIMANTAN TIMUR Rozak Memed; Paribotro Sutigno; M Isa Iskandar
Jurnal Penelitian Hasil Hutan Vol 1, No 4 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1984.1.4.8-13

Abstract

The results of  laboratory test on the properties of  wood-wool boards manufactured from  20  individual wood species obtained from East Kalimantan province are reported in this paper.  The tests comprised board density, moisture content thickness reduction due to compression and bending strength.The results reveal an average yield of wood-wool of 419 kg per cubic meter of log input, and CaCl2 mineralizing fluid produced better quality boards compared with those using Ca (OH)2. 
SIFAT PAPAN SEMEN SABUT KELAPA Rozak Memed; Paribotro Sutigno; I M Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol 1, No 4 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1984.1.4.24-26

Abstract

The report  deals  with  laboratory  tests  on  the properties   of cement board  made  from   coconut husk bonded  with  Portland  cement. The test  includes  board  density,   moisture   content.   thickness reduction due to  and bending strength.The  result reveals that the physical   and  mechanical  properties   of  cement  board  made   with  Ca(OH)2 and K2SO4) Al2 (S04)3 mineralizing fluid produces  better  quality  board  compared with that using CaCl2. The physical  and mechanical  properties   of cement boards  with  Ca(OH)2 and  (K2SO4) Al2  (S04)3   conform   to  the  DIN 1101 standard. The bending  strength  of cement  board  made with CaCl2 does not conform  to the DIN 1101 standard. 
Co-Authors Ignasia Maria Sulastiningsih M Isa Iskandar Paribotro Sutigno Paribroto Sutigno Ratmaja Eka Putra Sadan Widarmana Suwandi Kliwon Suwardi Sumadiwangsa