An Investigation of Marine Borer Resistance of Polymeric Materials

摘要

Marine borer resistance of various experimental polymeric materials, otherwise suitable for marine electric cable insulation, was evaluated. Twenty-five candidate formulations containing polyvinyl chloride (PVC) resin were prepared. Four non-PVC formulations containing chlorosulfonated polyethylene, ethylenepropylene rubber, chlorinated polyethylene, and crosslinked polyethylene respectively were also prepared. One commercial plastic, cellulose acetate-butyrate, was included. No marine boring organisms attacked the plastics directly from the water; all damage occurred at the wood plastic interfaces. None of the formulations were completely immune to attack by both teredos and pholads, although the non-PVC polymers were much more resistant to both than the PVC formulations. The PVC formulations containing the inert, inorganic fillers were virtually undamaged by teredos; those containing toxicants were also relatively free of damage by these organisms. Creosote as a co-plasticizer protected one of the PVC formulations against teredos. (Author)