| Judul | Pencetakan Toe Cap Sepatu Pengaman dari Plastik Menggunakan Mesin Cetak Injeksi |
|---|---|
| Tahun | 2015 |
| Pelaksana | Ir. Dwi Wahini Nurhajati, M.Eng Ir. Arum Yuniari Hardjaka, M.Sn Ihda Novia Indrajati, MT |
| Pembantu Pelaksana | - |
| Kata Kunci | - |
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mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> <p align="justify" style="margin-top:0in;margin-right:68.0pt;margin-bottom: 0in;margin-left:21.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;line-height:normal;mso-pagination:none;mso-layout-grid-align: none;punctuation-wrap:simple;text-autospace:none" class="MsoNormal"><span style="mso-ascii-font-family: Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri">Kegiatan penelitian “Pencetakan Toe Cap sepatu Injeksi” dilakukan dengan tujuan mendapatkan kondisi pencetakan yang optimum. Bahan <span style="mso-spacerun:yes"> </span>yang digunakan dalam penelitian ini adalah komposit hasil penelitian BBKKP tahun 2013 yang dikomposisi dari resin acrylonitrile butadiene styrene (ABS), resin poli karbonat (PC) dan bahan pengisi nano precipitated calcium carbonate (NPCC) dengan perbandingan ABS/PC/NPCC: 90/10/2,5 dan juga aditif. Selain itu sebagai pembanding juga dicoba membuat toe cap dari poli paduan ABS/PC tanpa nanofiller dengan perbandingan ABS/PC 25/75, juga dicoba membuat toecap dari ABS murni dan PC murni. Pencetakan toe cap menggunakan mesin cetak injeksi (injection molding) merek Komatsu 80T dengan parameter yang diteliti adalah penyetelan (setting) suhu dan tekanan injeksi. Kondisi proses pencetakan komposit BBKKP yang optimum pada setting suhu barrel 215ºC (zone 4 atau feeding zone), 225ºC (zone 3), 230ºC (zone 2) dan 235ºC (zone 1 atau metering zone), dan tekanan injeksi 109 MPa (detik 1), 105 MPa (detik 2), dan 101 MPa (detik 3) suhu nozzle 177 ºC menghasilkan toe cap yang penuh. Hasil uji menunjukkan bahwa hasil uji panjang sisi dalam pengeras depan semua toe cap yang dibuat memenuhi SNI sepatu pengaman namun untuk uji ketahanan pukul dengan enerji 200J toe cap yang diuji berdasarkan EN 12568 untuk toe cap yang dibuat dari komposit BBKKP yang dikomposisi dari ABS/PC/NPCC dan toe cap dari bahan ABS pecah, sedangkan dari bahan PC dan polipaduan ABS/PC retak. Hasil uji ketahanan terhadap tekanan dengan beban 15 kN dari toe cap plastik yang dibuat dari komposit BBKKP retak sedangkan toe cap dari bahan ABS, PC dan polipaduan ABS/PC tidak retak. </span></p> |
| Kategori | Plastik |