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Abstract
Abstract-Polyurethane products have many uses, with flexible and rigid types. By the very nature of foam's elastic cell structure, it provides a wide range of performance possibilities. The main polyurethane producing reaction is between a isocyanate and a polyol in the presence of catalyst for controlling the cell structure in the case of foams. Laboratory testing of flexible foam performance properties provides important information for polyurethane producers and users of foam products. Physical test on foam samples can be used for quality control purposes and to predicate the performance of flexible foam in PU sole applications. In the present paper, a flections test on foam samples to predicate the quality controls and performance PU sole was discussed on the basis of 100: 100 mixing ratio tested by a flexural testing machine. From the test shown that PU sole 150,000-200,000 cycles with the frequencies about 5 Hz and angle deflection 900, however micro cracking shown appear inside the sole material. Factor influencing strength bending from the PU sole apart from material [is] also influenced by condition operate for from the production sole: machine condition, mold temperature, release agent and also distribution of material infusion in mold.
Keywords: Flections test, deflection, material, cycles.