PENGARUH 1,4-BUTANDIOL SEBAGAI POLIOL PADA MODIFIKASI EPOKSI MENGGUNAKAN POLIURETAN
Abstract: Corrosion is a
natural phenomenon causing degradation value and function of material. The use
of paints and polymer coatings is the most popular method to protect material
against corrosion. Polymer coatings used was an epoxy-based organic resin and
polyurethane. Generally, those coating materials were used separately. This
study carried out the modification of epoxy with polyurethane in order to
obtain coating materials as a combination of epoxy and polyurethane.
Expectedly, the chemical reaction between epoxy coating-material and
polyurethane could improve the characteristics of the obtained coating
materials. Synthesis of polyurethane-modified epoxy with 1,4-butanediol as the
polyol (ETP-BTD) was conducted by reacting epoxy resin, tolonate and 1,4-butanediol
simultaneously at 50 oC for 30 min with dibutyltindilaurate as catalyst.
Functional group analysis of ETP-BTD was performed by Fourier Transform Infra
Red (FTIR), tensile strength by Ultimate Testing Machine (UTM), adhesion by
ASTM D4541 Portable Pull-off Adhesion Testers, water vapor transmission rate by
ASTM E96 Desiccant Method and thermal stability was studied using
Thermogravimetric Analysis (TGA). The FTIR analysis results showed that there
are urethane bonds at 1716-1690 cm-1. These results showed that modification of
epoxy using polyurethane increased the tensile strength and adhesion, and also
decreased the water vapor transmission rate of epoxy.
Penulis: Muhammad Ghozali,
Agus Haryono, Asep Handaya Saputra, Evi Triwulandari
Kode Jurnal: jpkimiadd150635
