Abstract
Six kinds of experimental magnetic resin composites containing SUS447J1 stainless steel particles as filler were prepared. UDMA/MAA resin with an MAA mole fraction of 0.67 was used as the matrix resin. The effects of six levels of 4-META content (2, 4, 6, 8, 10, and 12 mass%) on the setting and flexural properties were studied. The metal filler content in each paste was 90 mass%. Although working time and setting time significantly diminished with the increase of the BPO and DMPT contents, both working time and setting time satisfied the ISO 4049 requirements for all experimental levels. Flexural strength and elastic modules significantly improved with the increase of 4-META content up to 10%. The optimum 4-META content necessary to develop better composite resins for magnetic attachment has been clarified.
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