廃FRP船のリサイクルの試み

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In this report, a recycling technology of waste FRP boats which the have worked for a lot of years in Ship Research Institute is mentioned. Two technological methods are chosen for development of a recycling technology ; one is thermal decomposition method for organic component, mainly resin, of FRP, and another is high temperature melting for inorganic component, mainly glass fiber. By thermal decomposition, oils and gasses could be recovered from the resin with high recovery yield. The gasses have high caloric value of 8,938kcal/Nm^3 which are high enough to make good combustion, while several problems on physical properties of thermal decomposed oils and gasses recovered have been pointed out. That is to say, the recovered oils have the disadvantage of strong acidity, low igniting temperature, unfavourable ignition and so on. The experiment of melting glass fiber up to 1000℃ was carried out successfully. Then, there was no problem in melting process, and glass fiber melted at 830〜950℃ and cooled down to be solidifying into stone blocks with much void content. The porosity density can be controlled by melting temperature and cooling down velocity. The existence of porosity can be expected to work as an absorbing material and a filtering material. Base on the both technology, thermal decomposition and high temperature melting, in Heisei 5, the moval disposing system for waste FRP boats was built, sponsored by Japan Marine Recreation Association. The results of an actual proof test of this system showed that disposing expence was smaller than other usual disposing method, and no polluting and hazardous material had been generated.
独立行政法人海上技術安全研究所の論文
1998-05-13

廃FRP船のリサイクルの試み

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