PENGARUH RASIO PENGEPRESAN TERHADAP SIFAT MEKANIK DAN FISIK KOMPOSIT TEPUNG KANJI – CANGKANG MELINJO

Abstract: This research have a purpose to investigate the effect of pressing ratio to density, bending strength, and nail head pull. Composite  made  of  strach  gel  and  powder  of  melinjo  shell  and  making  process with mold press method. The variation used is pressing ratio, that is 40% pressing ratio,  50%  pressing  ratio  and  60%  pressing  ratio.  Density  test  based  on ASTM  D  792.  Bending  test  and  and  nail  head  phull  through  test  based  on ASTM D 1037-96a. Research  result  shows  that  density,  bending  strenght  and  and  nail  head  pull increase in line with increase of pressing ratio. Density,  bending  strenght  and  and  nail  head  phull  reach  high  value  in  60% pressing ratio, serially in 0.966 gr/cm3, 7.297 MPa dan 330 N.
Keywords: Composite, Starch, Melinjo shell, Pressing ratio, Bending strength, Density
Penulis: Wijang Wisnu Raharjo, Didik Riyanto, Rendra Dedi A, Iva Irawan
Kode Jurnal: jptmesindd110020

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