Resin composition, prepreg using the same, and fiber-reinforced composite material
View Patent ↗A resin composition that has good heat resistance and handleability and that can produce a prepreg which has a good balance between tackyness and drapability and which causes little resin flow during prepreg molding, a prepreg that is manufactured using the resin composition, and a fiber-reinforced composite are provided. A resin composition that contains a maleimide compound, diallyl bisphenol A, and a diallyl isophthalate polymer, a prepreg in which reinforcing fibers are impregnated with the resin composition, and a fiber-reinforced composite material that is obtained by molding the prepreg are provided.
1. A resin composition comprising
an aromatic maleimide compound,
an aliphatic maleimide compound,
diallyl bisphenol A and
a diallyl isophthalate polymer,
wherein the resin composition is a blend in which the following formulas are satisfied when amounts of the aromatic maleimide compound, the aliphatic maleimide compound, the diallyl bisphenol A and the diallyl isophthalate polymer are represented by [a1], [a2], [b] and [c], respectively, in parts by mass:
[ a 1]+[ a 2]=100 (1)
[ b ]≧20 (2)
[ b ]≦−1.4×[ a 2]+140 (3)
[ b ]≧−3.6×[ a 2]+90 (4)
15≦[ c ]≦65 (5)
0≦[ a 2]≦45 (6).
2. A resin composition comprising
an aromatic maleimide compound,
an aliphatic maleimide compound,
diallyl bisphenol A and
a diallyl isophthalate polymer,
wherein the resin composition is a blend in which the following formulas are satisfied when the amounts of the aromatic maleimide compound, the aliphatic maleimide compound, the diallyl bisphenol A and the diallyl isophthalate polymer are represented by [a1], [a2], [b] and [c], respectively, in parts by mass:
[ a 1]+[ a 2]=100 (7)
40≦[ b ]≦80 (8)
15≦[ a 2]≦40 (9)
20≦[ c ]≦60 (10).
3. The resin composition according to claim 1 or 2 , wherein a weight average molecular weight of the diallyl isophthalate polymer is 30000 or more and 50000 or less in terms of standard polystyrene equivalent.
4. A prepreg obtained by impregnating reinforcing fibers with a resin composition according to claim 1 or 2 .
5. The prepreg according to claim 4 , wherein the reinforcing fibers are carbon fibers.
6. A fiber-reinforced composite material obtained by molding a prepreg according to claim 4 .
7. The resin composition according to claim 1 , wherein the aromatic maleimide compound is a mixture of aromatic maleimide compounds represented by the following formula I:
wherein “n” in formula I is 0.3 to 0.4 on average.
8. The resin composition according to claim 1 , wherein the aliphatic maleimide compound is a polyfunctional maleimide compound that has two or more maleimide compounds in which a main chain that links the maleimide compounds is mainly composed of hydrocarbon.
9. The resin composition according to claim 1 , wherein the aromatic maleimide compound is selected from the group consisting of N,N′-m-phenylenedimaleimide, N,N′-p-phenylenedimaleimide, 4,4′-bismaleimidodiphenylether, bisphenol A diphenyl ether bismaleimide, 3,3′-dimethyl-5,5′-diethyl-4,4′-bismaleimidodiphenylmethane, 4-methyl-1,3-phenylenedimaleimide, 2,2-bis-[4-(4-maleimidophenoxy)phenyl]propane, N,N′-2,4-tolylenedimaleimide and N,N′-2,6-tolylenedimaleimide.
10. The resin composition according to claim 1 , wherein the aliphatic maleimide compound is 1,6-dimaleimido-(2,2,4-trimethyl)hexane.
11. The resin composition according to claim 1 or 2 , wherein the composition further comprises a peroxide.
12. The resin composition according to claim 2 , wherein the aromatic maleimide compound is selected from the group consisting of N,N′-m-phenylenedimaleimide, N,N′-p-phenylenedimaleimide, 4,4′-bismaleimidodiphenylether, bisphenol A diphenyl ether bismaleimide, 3,3′-dimethyl-5,5′-diethyl-4,4′-bismaleimidodiphenylmethane, 4-methyl-1,3-phenylenedimaleimide, 2,2-bis-[4-(4-maleimidophenoxy)phenyl]propane, N,N′-2,4-tolylenedimaleimide and N,N′-2,6-tolylenedimaleimide.
13. The resin composition according to claim 2 , wherein the aliphatic maleimide compound is 1,6-dimaleimido-(2,2,4-trimethyl)hexane.