Epoxy is a brittle thermoset polymer and is able to withstand heat that evaporates in water and has advantages such as good mechanical properties, good adhesion and low shrinkage. However, mechanical properties can still be improved by adding other materials as modifiers that are correct to certain properties to maintain mechanical properties in a material in a wet environment. For this reason,…
Fly Ash and CaCO3 have their own advantages for filling epoxy, in terms of water absorption and side tensile strength, so hybrid fly ash and CaCO3 need to be investigated further. The purpose of this study was to determine the effect of hybrid filler combination (fly ash / CaCO3) on water absorption and tensile strength tested in dry and wet conditions. The main ingredients of this research are…
Keywords: epoxy, water absorption and fracture toughness. Filler is widely used to improve the mechanical properties of epoxy which is used as an adhesive. Some fillers have advantages and disadvantages so that filler hybridization can reduce the deficiency of each filler. The purpose of this study was to determine differences in water absorption in various hybrid filler compositions (fl…
Epoxy is a thermoset synthetic product which is formed from two different chemicals, namely polyepoy resin reaction with hardener. In general, this type of epoxy material is widely used as a fiber composite matrix, adhesive and coating. The purpose of this study was to determine the effect of filler volume fraction on water absorption capacity and mechanical strength (tensile strength and bendi…
Composite is one kind of material created by the merger of two or more kinds of materials that have different properties into one new material with different properties, one of which is the incorporation of resin with fiber. The purpose of this study was to determine the effect of fraction of the composite fiber tensile strength and moisture absorption. The main ingredient of this research is …
Epoxy is a thermoset synthetic products of the reaction of polyepoxy resin with a hardening agent. Epoxy is widely used as a matrix fiber composites, adhesives, and coatings. The purpose of this study is to determine the effect of immersion specimens from a mixture of epoxy and filler variation on the water absorption and its mechanical strength (tensile strenght, stress intensity factor …
Biogas purification is a process that aims to minimize the content of impurities gases in biogas such as carbon dioxide (CO2) and hydrogen sulfide (H2S) to get better quality of methane (CH4). One method that can be used is recirculate water absorption method. In this study, use the method of absorption water by the addition of regeneration unit. Addition of the regeneration unit aims to minim…