| 초록 |
In this study, polyurethane (PU) composites with 5 different classes of hollow glass microspheres (HGMs) were prepared. The 5 HGMs used in composites had similar mean diameter but different shell thickness, reflecting as a difference in their density. The effect of shell thickness of HGMs on thermal insulation, thermal stability, dimensional stability and mechanical properties was investigated. It was found that the incorporation of HGMs enhanced thermal and mechanical properties with increasing content of HGMs in PU composites. The result also appeared that thin walled HGM had greater capacity to increase thermal insulation performance. However, thick walled HGM had considerable benefit in improving thermal stability and mechanical properties. There was no obvious effect of shell thickness on dimensional stability. |
