Abstract
Kevlar-polyurethane foam (PUF) was manufactured by adding Kevlar pulp, which has excellent mechanical strength and thermal performance, to PUF for the purpose of improving the performance of existing PUF. The mechanical strength of Kevlar-PUF was evaluated for each weight ratio (0.2, 0.4, 0.6, 0.8, and 1.0 wt.%) of fiber, as the performance of PUF was improved by the addition of Kevlar fiber. Compression tests were carried out at four temperatures (20, −50, −110, and −163 °C) in consideration of the service environment, where Kevlar-PUF is used as insulation of LNG storage systems. The fracture characteristics of the compressed specimen are also analyzed. The thermal conductivity of the foam at room temperature (20 °C) and low temperature (−20 °C) is measured according to the weight ratios. The addition of a certain amount of Kevlar fibers increases the compression resistance of PUF and improves the properties of the material.
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