Resin composition for acoustic matching layer, cured product, acoustic matching sheet, acoustic probe, acoustic measuring apparatus, method for producing acoustic probe, and acoustic matching layer material set

An acoustic matching layer material set comprising:

• a base resin made of a resin composition including metal particles (C) and at least one epoxy resin (A) selected from the group consisting of bisphenol A epoxy resins, bisphenol F epoxy resins, and phenol novolac epoxy resins;
• and
• a curing agent including at least one polyamine compound (B1) represented by general formula (I) below:
• LNH2)n General formula (I)
• where, in general formula (I), n represents an integer of 2 to 20, and L represents an n-valent aliphatic hydrocarbon group having an aliphatic hydrocarbon chain into which at least one oxygen atom is incorporated or an n-valent group having an aromatic ring and an aliphatic hydrocarbon group having at least one oxygen atom,
• wherein the metal particles (C) include at least one of Zn, Au, Zr, W, Ta, Fe, Cu, Ni, Pt, or Mo,
• wherein the curing agent further comprises a polyamine compound (B2), and wherein the polyamine compound (B2) is a polyamine compound not having an oxygen atom as a constituent atom and is represented by general formula (V):
• H2N-L8-NH2 General formula (V)
• wherein, in general formula (V), L8 represents an alkylene group, an imino group, or a divalent linking group formed by combining these groups and
• wherein an equivalent ratio of contents of the epoxy resin (A) and the polyamine compound (B1) satisfies polyamine compound (B1)/epoxy resin (A)=0.5/1 to 1/0.5.