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Paribotro Sutigno
Pusat Penelitian dan Pengembangan Hasil Hutan
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PENGARUH PENAMBAHAN UREA DAN AMONIUM KARBONAT PADA PEREKAT UREA FORMAIDEHIDA TERHADAP EMISI FORMALDEHIDA DAN SIFAT FISIS-MEKANIS PAPAN PARTIKEL Paribotro Sutigno; Adl Santoso
Jurnal Penelitian Hasil Hutan Vol 9, No 2 (1991): 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.1991.9.2.63 - 69

Abstract

The  formaldehye  emission  of  particleboard  bonded   with  urea  formaldehyde  (UFJ  cain  affect  human  hseith. sepecially if It  used  in a room with limited ventilation. To reduce formaldehyde emission,  the glue can be  mixed with catching agent.  In  this paper, the effect  of  using  urea and  ammonium carbonate as catching agents  on   fermaldehyde emission,and on the physical and mechanical properties of UF bonded particleboard  is described.the effect of catching agent type on formaldehyde emission is not signifivant while effect of percentage,of catching agent is highly significant on formaldehyde emission. The higher  the percentage  of catching agent, the lower  formaldehye emission of particleboard. The formaldehyde emission reaches  the requirement (max. 1  ug/ml) at the leve of  18% of amntonium carbonate or 14%  of the mixture of ammonium carbonate and urea. Type  and percentage of catching agent aflect   water absoprtion, thickness  swelling, internal bond strength,shear  strength and modulus of rupture,but not the modulus of elasticity. 
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 Adi Santoso Adi Santoso Santoso Adl Santoso Ignasia Maria Sulastiningsih Jasni Jasni M I Iskandar M I Jslrandar M I lskandar M Isa Iskandar M l Iskandar Memed Rozak Nurwati Nurwati Rodjak Memed Rozak Memed Setiasih Irawanti Setiasih lrawati Suwandi Kliwon