Development of an Iron Oxide Particle Catcher in Water Using Resin Material

Iron oxide deposition on resin material was investigated in order to develop an iron oxide particle catcher for the plate heat exchanger of water cooling system, preventing thin water channels from being clogged. It was revealed that acrylonitrile-butadiene-styrene （ABS） resin captured a large amount of iron oxide by experimental results using artificial hematite suspension. Moreover, dependency of surface roughness of ABS on iron oxide deposition was quantitatively evaluated. As a result, it was found that mass of the hematite deposit in an arithmetic average roughness of 7.7μm or more was 15 times as much as that in a roughness of 0.44μm. Further analysis of ABS surface clarified that good deposition of rough ABS surface is probably brought by big holes with a width from 50 to 80μm and a depth from 30 to 50μm, since hematite particles easily flow in and deposited on inner walls with these holes.