Aluminium-Particulate Glass Matrix Composites with Acrylic as a Binder for a Plastic Injection Mold Material
Penulis/Author
Dr. Ir. Suryo Darmo, M.T. (1); Prof. Ir. Alva Edy Tontowi, M.Sc., Ph.D., IPU., ASEAN Eng. (2); Dr. Suyitno, S.T., M.Sc. (3); Ir. Muslim Mahardika, S.T., M.Eng., Ph.D., IPM., ASEAN Eng. (4)
Tanggal/Date
2013
Kata Kunci/Keyword
Abstrak/Abstract
Aluminium-Particulate glass matrices composites generally use the pressure in making of green parts/green specimens before heating at a sintering temperature, therefore there were some problems when the process was used directly in the manufacture of mold caused by the making of the glass composites without using pressure so that it can be used as a plastic injection mold material by indirect layer manufacturing. For this purpose, acrylic was used as a binder in the manufacture of the green specimens.
Starting materials consist of the mixture of glass powders, aluminium powders, and acrylic powders in the volume ratio of 3 : 1 : 2. The glass powders and aluminium powders were recovered from waste materials. The size of each particles was <1.425 mm. Green spesimens, the green specimens were heated at the temperatures of 600?C, and 700?C for 1 h respectively. The bending strength of green specimens was of about 5.77 kg/cm2, and the maximum bending strength of the finished specimens was of about 40 kg/cm2 occurred at a heating temperature of 650?C. the bending strength increased into 495 kg/cm2 after resin impregnated. Maximum shrinkage was about 8,42% occurred at a heating temperature of 700?C.
