Resin composition, insulating resin film and use thereof
Resin composition, insulating resin film and use thereof. The resin composition comprises the following components in parts by mass: 50-90 parts of a hydrogenated hydrocarbon resin and 10-50 parts of a benzocyclobutene resin; the benzocyclobutene resin comprises at least one structural unit A and at least one structural unit B. The hydrogenated hydrocarbon resin and the benzocyclobutene resin with a specific structure are both total-hydrocarbon structures, having low dielectric constant Dk, dielectric loss tangent Df, and water absorption rate. The benzocyclobutene resin can be thermally cured to obtain the high cross-linking density, high glass transition temperature, and excellent heat resistance. The resin composition and the insulating resin film prepared therewith have ultra-low dielectric constant and loss tangent, excellent dielectric properties, heat resistance, damp heat resistance, adhesion strength, and excellent mechanical properties such as flexibility, satisfying the performance requirements of electronic components being high frequency, high speed, and high integration.
1 . A resin composition, comprising the following components in parts by mass: 50-90 parts of a hydrogenated hydrocarbon resin and 10-50 parts of a benzocyclobutene resin;
the benzocyclobutene resin comprises at least one structural unit A and at least one structural unit B;
the structural unit A has a structure as shown in formula I:
R 1 is vinylidene and/or ethylidene, wherein the structural unit A of the benzocyclobutene resin has a molar percentage of more than or equal to 5-80%;
the structural unit B has a structure as shown in formula II:
R 2 is vinyl, ethyl and/or phenyl, wherein the structural unit B of the benzocyclobutene resin has a molar percentage of 15-85%,
wherein the benzocyclobutene resin further comprises structural unit C, and the structural unit C has a structure as shown in formula IIIA and/or a structure as shown in formula IIIB:
wherein the structural unit C of the benzocyclobutene resin has a molar percentage of 8-48%;
wherein the hydrogenated hydrocarbon resin comprises any one or a combination of at least two of a hydrogenated styrene-butadiene copolymer, a maleic anhydride grafted hydrogenated styrene-butadiene copolymer, and hydrogenated polybutadiene, and
wherein the hydrogenated hydrocarbon resin has a number average molecular mass of 20000-120000.
2 . The resin composition according to claim 1 , wherein the hydrogenated hydrocarbon resin comprises a fully hydrogenated hydrocarbon resin and/or a partially hydrogenated hydrocarbon resin.
3 . The resin composition according to claim 1 , wherein the structural unit C of the benzocyclobutene resin has a molar percentage of 8-40%.
4 . The resin composition according to claim 1 , wherein the benzocyclobutene resin has a number average molecular mass of 1000-20000.
5 . The resin composition according to claim 1 , wherein the resin composition further comprises an initiator.
6 . The resin composition according to claim 1 , wherein the resin composition further comprises a filler.
7 . The resin composition according to claim 1 , wherein the resin composition further comprises a flame retardant.
8 . An insulating resin film, wherein a material of the insulating resin film comprises the resin composition according to claim 1 .
9 . A metal foil clad laminate, wherein the metal foil clad laminate comprises the insulating resin film according to claim 8 .
10 . A printed circuit board, wherein the printed circuit board comprises the insulating resin film according to claim 8 .
11 . A resin-coated copper foil, wherein the resin-coated copper foil comprises a copper foil layer and a resin layer, and a material of the resin layer comprises the resin composition according to claim 1 .
12 . A metal foil clad laminate, wherein the metal foil clad laminate comprises the resin-coated copper foil according to claim 11 .
13 . A prepreg, wherein the prepreg comprises a reinforcing material and the resin composition according to claim 1 adhered on the reinforcing material.
14 . The prepreg according to claim 13 , wherein the resin composition is adhered on the reinforcing material by impregnation and drying.
15 . A metal foil clad laminate, wherein the metal foil clad laminate comprises the prepreg according to claim 13 .