CD Skripsi
Pengaruh Temperatur Terhadap Kekuatan Tarik Komposit High Density Polyethylene Yang Diperkuat Fiberglass
ABSTRACT
Pipes for electrical and telecommunication cable networks made of High Density Polyethylene (HDPE) composite materials reinforced with fiberglass in Pekanbaru are generally installed close to highways, some are on the ground surface, underground, or in water passing through the Siak River or other rivers. Pipes that are on the ground surface will get quite high heat intensity during the day so that they experience higher temperatures than those under ground or water. Pipes with different temperatures, it is necessary to know how they affect the tensile strength and the possibility of failure that occurs in the pipe. Fibers that were used in this research is short fiberglass with a weight fraction of 70% HDPE and 30% fiberglass. The specimens were made by using a hot press tool which was pressed at a temperature in the region of 150⁰C, with the mold sizing at 20cm x 15cm x 1.2 cm. The specimens were tensile tested with temperature variations of 20⁰C, 30⁰C & 36⁰C, based on direct measurement results at a depth of 1 meter from the surface of the Siak River, 1 meter underground, and the highest ground surface temperature in Pekanbaru. Specimens were made based on ASTM D3039 standard, tensile tested with a 20 kN capacity Universal Testing Machine. The tensile strength decreases with increasing temperature, at a temperature of 20⁰C the average tensile strength is 13.74 MPa, at a temperature of 30⁰C the average tensile strength is 8.71 MPa and at a temperature of 36⁰C the average tensile strength is 8.22 MPa. This research is expected to help provide accurate temperature information on the fiberglass reinforced HDPE as a pipe material.
Key Words: High Density Polyethylene, Fiberglass, Tensile Test, Temperature.
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