Search

Polyurethane is a very versatile polymer but it has poor thermal resistance and mechanical resistance. Thus, clay was added in the polyurethane and the thermal properties are determined by a bomb calorimeter. There were two type of clay used which are treated clay and untreated clay. Clay (treated and untreated) was added into polyurethane by Thermal Haaka by extrusion process. In the research, treated clay showed according to the references statement. Addition of 5wt% of treated clay reduced 85% of the heat combustion of the polyurethane while for untreated clay the reduced heat combustion is not too significant. This is because the sensitivity of the bomb calorimeter to the surface area that contacted to the ignition wire. Treated clay certainly can reduced the heat of combustion to 85% of polyurethane with additional of 5wt% of treated clay.

A New emulsion type paint was prepared by utilizing polyol for the production of polyurethane by reaction with an isocyanate was obtained by the synthesis of palm oil-based oleic acid with glycerol. Dodecylbenzene sulfonic acid (DBSA) was used as catalyst and emulsifier. The various methods for preparing Polyurethane /clay nanocomposites, but in this research the author choice by a pre-polymer method and were evaluated by fourier transform infrared (FTIR) spectra to determine micro-domain structures of segmented PU. The molecular weight (MW) of polyol was obtained by using gel permeation chromatography (GPC) and the result was about 950. The micro domain structures of the segmented PU were analyzed by FTIR by following the work of Seymour, et.al. to estimated the degree of phase separation in segmented PU. The formation of hydrogen bonding by C=O group can be determined by examining the peak position at 1709 cm-1 for hydrogen bonded C=O and at 1731 cm-1 for free C=O. The molecular weight (MW) of PU based on palm oil was about 3.266. The performance characteristics of materials indicate to be comparable with the corresponding industrial standard.