Patent ID: 11890832
Assignee: NAN YA PLASTICS CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B  H | IPC B

Claim 0:
1. A prepreg, comprising:
a reinforcing material; and
a thermosetting resin layer formed by immersing the reinforcing material in a thermosetting resin composition; wherein the thermosetting resin composition includes a polyphenylene ether resin, a liquid polybutadiene resin, a crosslinker, and fillers, based on a total weight of the thermosetting resin composition being 100 phr, an amount of the fillers ranges from 50 phr to 70 phr, the fillers include a granular dielectric filler and a flaky thermal conductive filler, and the flaky thermal conductive filler is boron nitride;
wherein a weight-average molecular weight of the liquid polybutadiene resin ranges from 1000 g/mol to 10000 g/mol, and an external diameter of the flaky thermal conductive filler ranges from 5 μm to 60 μm;
wherein the granular dielectric filler includes a supportive dielectric filler and a filling dielectric filler, a particle size of the supportive dielectric filler ranges from 30 μm to 50 μm, and a particle size of the filling dielectric filler ranges from 5 μm to 20 μm;
wherein the supportive dielectric filler is a mixture of aluminum oxide and silicon dioxide, wherein, in the supportive dielectric filler, a weight proportion of aluminum oxide to silicone dioxide ranges 5:5 to less than 8:2;
wherein the filling dielectric filler is a mixture of aluminum oxide and silicon dioxide, wherein, in the filling dielectric filler, a weight proportion of aluminum oxide to silicone dioxide ranges 2:8 to less than 5:5.