THERMOSETTING RESIN COMPOSITION, RESIN SHEET, PREPREG AND LAMINATE SHEET

摘要

PROBLEM TO BE SOLVED: To provide a resin composition high in heat-conductivity and excellent in insulation properties at high temperature, a resin sheet, a prepreg and a laminate sheet.SOLUTION: There is provided a thermosetting resin composition containing: a polyfunctional epoxy resin monomer; a polyfunctional amine compound; an inorganic filler (A) which is an aggregate of primary particles and has an average particle diameter d1 of 10 μm to 70 μm; and an inorganic filler (B) containing an inorganic filler(b) having an average particle diameter d3 of particle unit of 1 μm or more and less than 10 μm and an inorganic filler (c) having an average particle diameter d4 of 0.1 μm or more and less than 1 μm. A volume ratio of the (b) : the (c) is 90:10 to 70:30. A percentage content of the (A) to a total solid content is 10 to 55 vol.%, and a percentage content of (B) to the total solid content is 10 to 55 vol.%. The total percentage content of the (A) and the (B) is 30 to 80 vol.%.