The present study investigated the effect of various types of impregnating and surface treatment materials on the fire resistance of wood material indoors and outdoors. Wood samples (Cedrus libani A. ...Rich.) were impregnated with Wolmanit-CB or Tanalith-E according to ASTM D1413-76 (American Society for Testing and Materials 1976). The impregnated surface was treated with either synthetic or water-based outdoor varnish materials. The impregnated and varnished samples were left in outdoor conditions for 1 year. The combustion characteristics of the samples were investigated at the end of 1 year according to the combustion parameters detailed in the ASTM E160-50 (1975) combustion test. The results of this study indicated that the combustion parameters were lower in the 1-year-old samples (89.12% of control values), in the samples impregnated using Wolmanit-CB (89.18% of control values), and in samples treated using water-based varnish (88.43% of control values). The analysis of flue gas indicated that the O2 content of the 1-year-old samples impregnated with Wolmanit-CB and treated with synthetic varnish was higher, whereas the CO content was lower. In conclusion, impregnated Wolmanit-CB specimens provide higher fire resistance.
碩士
國立高雄科技大學
化學工程與材料工程系
107
Polyphenylene oxide (PPO) was usually used in engineering plastics of IC tray, for this study, we use PPO's compatible property to blend with different carbon black, carbon ...fiber and glass fiber being a reinforcement material, and follow the standard of American Society for Testing Materials (ASTM) to test blending sample's physical properties. Sample pieces followed ASTM standard were injected from blending materials, and then study by tensile testing, bending test, percentage of elongation, shrinking, and used SEM to observe dispersibility of blending materials. The results show that CF/PPO is better than GF/PP and CB/PPO in rigidity, but the cost is higher than both of them and GF/PPO has good ductility and softness. CB/PPO is worse than both of CF/PPO and GF/PPO in physical properties, because it has a lower specific gravity, but its cost is lower than CF/PPO and GF/PPO, so CB/PPO is quite competitive in price.
