Patent ID: 8367757

Claim:
A polymer composite material, comprising: a polymer matrix including a thermoplastic aromatic polymer having both an ester bond and an ether bond; and metal oxide particles dispersed in the polymer matrix; wherein the thermoplastic aromatic polymer comprises: a repeating unit having a (thio)ether bond and represented by General Formula (1) below; and a repeating unit having no (thio)ether bond and represented by General Formula (2) below; and wherein a percentage N, calculated from Equation 1 below, of the repeating unit represented by General Formula (1) is not less than 20 mol % but less than 60 mol %, N=n 1 /( n 1 +n 2 )×100, (Equation 1) where n 1 is the number of moles in the repeating unit represented by General Formula (1); and n 2 is the number of moles in the repeating unit represented by General Formula (2), where R 1 , R 2 , R 3 , and R 4 are independently a halogen atom, a C1 to C6 alkyl group, or a C6 to C12 aryl group, and may be identical to or different from one another; a, b, c, and d are independently an interger(s) of 0 to 4; X 1 is an oxygen atom or a sulfur atom; X 2 is a single bond, a C1 to C6 alkylene group, a C1 to C6 alkylidene group, a C5 to C20 cycloalkylene group, a C5 to C20 cycloalkylidene group, a 9,9-flouroenylidene group, a hexoflouro-2,2-propylidene group, —SO—, —SO 2 —, or —CO—; and Ar 1 and Ar 2 are independently a phenylene group, naphthalene group, or biphenylene group, and are substituted or unsubstituted.