การผลิตแผ่นยิปซัมที่มีส่วนผสมของเศษฝุ่นฝ้าย

Abstract

This research aims to study of the production of gypsum board mixing with dust cotton fiber, and then test physical properties. The dust cotton fiber mix into gypsum board for the 0, 5, 10, 15 and 20 percent/weight, the gypsum board is formed with the size of 300 x 400 x 9 mm. The compressive strength and weight gypsum board are tested. The results, dust cotton fiber increase in gypsum board will be weight and strength is reduced. The compressive strength and modulus of rupture lower than  the industrial standard of gypsum board(219-2524), and then mix bounding are polyvinyl alcohol with gypsum board for 5 percent/weight at 3, 4, 5, 6 and 7 percent/volume. The results, for mix polyvinyl alcohol are passing standard at 6 and 7 percent. The 6 percent are compressive strength 150.92 N and modulus of rupture 3.34 MPa and the 7 percent are compressive strength 159.35 N and modulus of rupture 3.56 MPa, and then use bounding at 6 percent mix dust cotton fiber for the 10, 15 and 20 percent/weight. The results, for mix dust cotton fiber at 10 percent/weight compressive strength 135.52 N and modulus of rupture 3.12 MPa and weight is reduced 17 percentages. The gypsum board mix dust cotton fiber for the 15 and 20 percent/weight are lower than the standard values.