| 초록 |
Wood plastic composites (WPCs) have attracted a lot of interest because they are environmentally friendly with reasonable performance. Heavy metal free polyvinylchloride (PVC) has been developed to avoid the toxicity of conventional PVC. To improve the performance of a wood/PVC composite a small amount (1~5 phr) of an organoclay was incorporated as nanosize filler into the WPC. The effects of the organoclay on the performance of the WPC were extensively studied via various test methods. WPC specimens were fabricated by melt-blending followed by compression molding, and their physical properties were investigated by UTM, izod impact tester, DMA, TMA, and TGA. SEM images for the fractured-surfaces of the WPCs gave important information on the fracture mechanics of the WPCs by showing somewhat different surface morphology caused by the addition of the organoclay. XRD analysis showed that the polymer matrix had an intercalated structure caused by filling of some polymer molecules between the silicate layers of the organoclay.The performance of the WPC was considerably improved by incorporating just a small amount of the organoclay. |
