公开(公告)号：EP3892671A2

公开(公告)日：2021-10-13

申请号：EP19799395.9

申请日：2019-09-04

申请人： Nitto Boseki Co., Ltd.

发明人： NUKUI, Yosuke ,  TAKAIZUMI, Mao ,  KUSABA, Shunsuke

IPC分类号： C08J5/04 ,  B29K105/12

摘要： Provided is a glass fiber-reinforced resin molded article with high mechanical strength and in which occurrence of undispersion of glass fiber is suppressed. In the glass fiber-reinforced resin molded article, glass fiber includes a flat cross-sectional shape having a minor axis D1 in the range of 3.0 µm or more and 10.5 µm or less and a major axis D2 in the range of 11.0 µm or more and 29.0 µm or less, the number average fiber length L (µm) of the glass fiber included in the glass fiber-reinforced resin molded article is in the range of 195 µm or more and less than 400 µm, the glass fiber content C (wt%) in the glass fiber-reinforced resin molded article is in the range of more than 50.0 wt% and 80.0 wt% or less, and the D1, D2, L, and C satisfy the following formula (1): 1200.0 ≤ C × L 2 / D 1 × D 2 2 ≤ 2550.0

公开(公告)号：EP4310063A1

公开(公告)日：2024-01-24

申请号：EP22849027.2

申请日：2022-06-03

申请人： Nitto Boseki Co., Ltd.

发明人： SASAKI, Ryo ,  NUKUI, Yosuke

IPC分类号： C03C25/326 ,  C03C25/25 ,  C08J5/08 ,  C08K7/14 ,  C08L101/00 ,  D06M13/513 ,  D06M15/564 ,  D06M101/00

摘要： 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).

公开(公告)号：EP4119610A1

公开(公告)日：2023-01-18

申请号：EP21866619.6

申请日：2021-09-01

申请人： Nitto Boseki Co., Ltd.

发明人： SASAMOTO, Taiki ,  NUKUI, Yosuke

IPC分类号： C08K7/14 ,  C08L101/12 ,  C08J5/18

摘要： Provided is a glass fiber-reinforced resin plate that comprises glass fiber having a flat cross-sectional shape and has an improved elastic modulus in the TD direction. The glass fiber-reinforced resin plate comprises a glass fiber having a flat cross-sectional shape and a resin, in which the glass fiber having a flat cross-sectional shape has a minor axis of 4.5 to 10.5 µm, a major axis of 22.0 to 80.0 µm, a ratio of the major axis to the minor axis (major axis/minor axis) R in the range of 4.5 to 10.0; the glass fiber content C is 5.0 to 75.0% by mass; the thickness H is in the range of more than 0.5 mm and 10.0 mm or less; and the C and H satisfy the following formula (1). 30.0 ≤ H × C ≤ 120.0 ...(1).

公开(公告)号：EP3795642A1

公开(公告)日：2021-03-24

申请号：EP19903366.3

申请日：2019-08-30

申请人： Nitto Boseki Co., Ltd.

发明人： NUKUI, Yosuke ,  TAKATSU, Kimihiro

IPC分类号： C08L101/00 ,  C08J5/04 ,  C08K7/14

摘要： Provided is a glass fiber-reinforced resin molded article having well-balanced and excellent static and dynamic strength and fluidity. In the glass fiber-reinforced resin molded article, glass fiber included in the glass fiber-reinforced resin molded article includes a flat cross-sectional shape having a minor axis D1 in the range of 3.0 to 10.5 µm and a major axis D2 in the range of 11.0 to 29.0 µm, the number average fiber length L (µm) of the glass fiber included in the glass fiber-reinforced resin molded article is in the range of 150 to 475 µm, the glass fiber content C (wt%) in the glass fiber-reinforced resin molded article is in the range of 40.0 to 75.0 wt%, and the above D1, D2, L, and C satisfy the following formula (1): 260.0 ≤ C 2 × L / D 1 × D 2 2 ≤ 400.0

公开(公告)号：EP3339264A1

公开(公告)日：2018-06-27

申请号：EP15902216.9

申请日：2015-08-21

申请人： Nitto Boseki Co., Ltd

发明人： NONAKA, Takashi ,  HIRAYAMA, Norio ,  MINAMI, Kazuaki ,  NUKUI, Yosuke

IPC分类号： C03C13/00

CPC分类号： C03C13/00 ,  C03B37/075 ,  C03B2203/02 ,  C03C3/087 ,  C03C3/091

摘要： Provided is a method for producing glass fiber, capable of stably performing the spinning of glass fibers without mixing of red crystals in glass fibers. When glass fibers are formed by discharging, from a nozzle tip, a molten glass obtained by melting glass raw materials mixed so as to give a glass composition including, when melted, in relation to the total amount thereof, SiO 2 in a range from 57.0 to 62.0% by mass, Al 2 O 3 in a range from 15.0 to 20.0% by mass, MgO in a range from 7.5 to 12.0% by mass, and CaO in a range from 9.0 to 16.5% by mass, and having a total content of SiO 2 , Al 2 O 3 , MgO and CaO of 98.0% by mass or more, the glass composition includes B 2 O 3 , Li 2 O, or B 2 O 3 and Li 2 O as an additive or additives capable of suppressing the generation of red crystals.