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公开(公告)号：US20220227951A1
公开(公告)日：2022-07-21
申请号：US17713704
申请日：2022-04-05
发明人： Takuya TERANISHI , Satoshi OKAMOTO , Akira OOTA , Masahiro ICHINO
摘要： A prepreg may include: a reinforcing fiber material including carbon fibers; and a resin composition with which the reinforcing fiber material is impregnated. The resin composition may include an epoxy resin (A), an amine curing agent (B), and an imidazole curing agent (C). The amine curing agent (B) may be present in a range of from 1 to 3.8 parts by mass, relative to 100 parts by mass of the epoxy resin (A). The amine curing agent (B) and the imidazole curing agent (C) may be present in a total amount of not more than 10 parts by mass, relative to 100 parts by mass of the epoxy resin (A). The imidazole curing agent may include an imidazole compound including, in its molecular structure, a triazine ring.
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公开(公告)号：US20180291165A1
公开(公告)日：2018-10-11
申请号：US16004475
申请日：2018-06-11
发明人： Satoshi OKAMOTO , Yukihiro HARADA , Atsushi NOHARA
摘要： A prepreg tape in which reinforcing fiber bundles are impregnated with a thermosetting resin composition, wherein the prepreg tape has a tack value measured at 23° C. at a plunger push pressure of 90 kPa of 5-40 kPa, a tack value measured at 45° C. and a plunger push pressure of 150 kPa of 35-100 kPa, and a drape value at 23° C. of 10-40°, and includes unidirectional fibers arranged along the direction of length of the prepreg tape.
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公开(公告)号：US20210009776A1
公开(公告)日：2021-01-14
申请号：US16925408
申请日：2020-07-10
发明人： Takuya TERANISHI , Satoshi OKAMOTO , Akira OOTA , Masahiro ICHINO
摘要： A prepreg contains: a reinforcing fiber material; and a resin composition with which the reinforcing fiber material is impregnated. The resin composition contains an epoxy resin, an amine curing agent, and an imidazole curing agent. An amount of the amine curing agent is less than or equal to 3.8 parts by mass, relative to 100 parts by mass of the epoxy resin, and a sum of the amount of the amine curing agent and an amount of the imidazole curing agent is less than or equal to 10 parts by mass, relative to 100 parts by mass of the epoxy resin. The fiber-reinforced composite material is a cured product of the prepreg.
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公开(公告)号：US20180265659A1
公开(公告)日：2018-09-20
申请号：US15986963
申请日：2018-05-23
发明人： Satoshi OKAMOTO , Yukihiro HARADA
CPC分类号： C08J5/24 , B29C70/32 , B29K2063/00 , B29K2105/0094 , B29K2307/04 , B29K2421/00 , B29L2031/7156 , C08G59/226 , C08G59/4021 , C08G59/68 , C08J2363/00 , C08J2409/00 , C08J2463/00 , F17C1/02 , F17C2203/011 , F17C2203/0604 , F17C2203/0646 , F17C2209/2163 , F17C2221/012 , F17C2270/0168 , F17C2270/0184
摘要： Provided are a tow prepreg comprising a reinforcing fiber bundle impregnated with a matrix resin composition, wherein the matrix resin composition contains a component (A) (an epoxy resin), a component (B) (dicyandiamide), a component (C) (a curing accelerator), and a component (D) (a core-shell type rubber particle), and a content of the component (D) with respect to 100 parts by mass of the component (A) is from 20 to 70 parts by mass, a viscosity is from 3 Pa·s to 80 Pa·s at 30° C., and a minimum viscosity to be obtained when a viscosity is measured by raising a temperature from room temperature to 130° C. at a rate of temperature rise of 2.0° C./min is from 0.04 Pa·s to 1 Pa·s, which exhibits excellent drape property and tackiness and less stickiness and can be unwound at a high speed; and a composite material-reinforced pressure vessel having fewer voids in a reinforcing layer which is obtainable by using the tow prepreg, a high burst pressure, and an excellent appearance due to appropriate resin flow.
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