Glass fibers for resin reinforcement use and glass fiber-reinforced resin molded article
Provided is a glass fiber for resin reinforcement that has excellent processability, and enables a fiber-reinforced resin molded article having excellent mechanical properties to be obtained. The glass fiber for resin reinforcement comprises a glass fiber, and organic matter adhered to the surface of the glass fiber, wherein the amount of nitrogen N of the organic matter is 0.010 to 0.600% by mass based on the total amount of the glass fiber for resin reinforcement, the amount of carbon C of the organic matter is 0.120 to 1.500% by mass based on the total amount of the glass fiber for resin reinforcement, the ignition loss L of the glass fiber for resin reinforcement is 0.200 to 2.000% by mass, and the N, C, and L satisfy the following formula (1): 0.220≤(N×C) 1/2 /L≤0.405 . . . (1).
1 . A glass fiber for resin reinforcement, comprising a glass fiber, and organic matter adhered to a surface of the glass fiber, wherein
an amount of nitrogen N of the organic matter is in a range of 0.010 to 0.600% by mass based on a total amount of the glass fiber for resin reinforcement;
an amount of carbon C of the organic matter is in a range of 0.120 to 1.500% by mass based on the total amount of the glass fiber for resin reinforcement;
an ignition loss L of the glass fiber for resin reinforcement is in a range of 0.200 to 2.000% by mass; and
the N, C, and L satisfy a following formula (1):
0.22
≤
(
N
×
C
)
1
/
2
/
L
≤
0.405
(
1
)
.
2 . The glass fiber for resin reinforcement according to claim 1 , wherein
the N and C satisfy a following formula (a):
2.9
≤
C
/
N
≤
6.5
(
a
)
.
3 . The glass fiber for resin reinforcement according to claim 1 , wherein
the N and C satisfy a following formula (b):
4.85
≤
C
/
N
≤
6.2
.
(
b
)
4 . The glass fiber for resin reinforcement according to claim 1 , wherein
the amount of nitrogen N of the organic matter is in a range of 0.030 to 0.270% by mass based on the total amount of the glass fiber for resin reinforcement;
the amount of carbon C of the organic matter is in a range of 0.300 to 1.200% by mass based on the total amount of the glass fiber for resin reinforcement;
the ignition loss L of the glass fiber for resin reinforcement is in a range of 0.400 to 1.800% by mass; and
the N, C, and L satisfy a following formula (2):
0.245
≤
(
N
×
C
)
1
/
2
/
L
≤
0.274
(
2
)
.
5 . The glass fiber for resin reinforcement according to claim 1 , wherein
the organic matter comprises a silane coupling agent containing nitrogen.
6 . The glass fiber for resin reinforcement according to claim 1 , wherein
the organic matter comprises a film former.
7 . The glass fiber for resin reinforcement according to claim 1 , wherein
the glass fiber is in any one form selected from a group consisting of chopped strand, roving, chopped strand mat, and milled fiber.
8 . A glass fiber-reinforced resin molded article, comprising the glass fiber for resin reinforcement according to claim 1 , and a thermoplastic resin having a glass transition temperature of 100° C. or more.
9 . A glass fiber-reinforced resin molded article, comprising the glass fiber for resin reinforcement according to claim 1 , and polyaryl ether ketone.