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公开(公告)号：US20240101755A1
公开(公告)日：2024-03-28
申请号：US17767564
申请日：2020-10-14
CPC分类号： C08G59/3227 , C08G59/38 , C08G59/4021 , C08G59/4064 , C08G59/686 , C08J5/249 , C08K5/5313 , C08J2363/02
摘要： This invention relates to a flame retardant epoxy resin composition which includes an epoxy resin structure having an epoxy functionality of 2 or more with a measured total heat release value of not more than 23 kJ/g as well as an organic phosphinic acid structure (in reacted or unreacted form), as well as a prepreg, and a fiber reinforced composite material prepared using the epoxy resin composition. More specifically, an epoxy resin composition is provided that contains a combination of particular types of epoxy resins and curatives that provide sufficient flame retardance when cured at 163° C. for 15 minutes. The epoxy resin systems are also suitable for preparing a fiber-reinforced composite material that will also provide sufficient flame retardance for a variety of applications.
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公开(公告)号：US20210024748A1
公开(公告)日：2021-01-28
申请号：US16971381
申请日：2019-03-19
发明人： Benjamin Lehman , Benjamin Rutz , Nobuyuki Arai
摘要： A benzoxazine resin composition for a fiber-reinforced composite material is provided which contains at least a component [A] having a peak reaction temperature and a component [B] having a peak reaction temperatures that may be within 50° C. of each other. Component [A] includes at least one multifunctional benzoxazine resin. Component [B] includes at least one cycloaliphatic epoxy resin represented by Formula (I): This benzoxazine resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer a benzoxazine resin composition for a fiber-reinforced composite material where the cured material obtained by heating having superior performance in extreme use environments, such as high temperature and high moisture.
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公开(公告)号：US10829633B2
公开(公告)日：2020-11-10
申请号：US16340530
申请日：2017-10-19
摘要： An epoxy resin composition for a fiber-reinforced composite material, containing at least components [A], [B], [C], [D], and [E], wherein the epoxy resin composition when cured has a glass transition temperature greater than 220° C. and a storage modulus, as defined by a specific method, less than 35 MPa, as determined from an elastic shear modulus measured at a temperature of at least 35° C. higher than the glass transition temperature, wherein the components [A], [B], [C], [D], and [E] are:[A] at least one naphthalene-based epoxy resin having an EEW between 190 and 260 g/mol;[B] at least one epoxy resin having a functionality of three or more;[C] at least one amine curing agent;[D] at least one latent acid catalyst; and[E] at least one cycloaliphatic epoxy resin.This epoxy resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer an epoxy resin composition for a fiber-reinforced composite material where the cured material obtained by heating has high levels of heat resistance and microcrack resistance.
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公开(公告)号：US20200048453A1
公开(公告)日：2020-02-13
申请号：US16340530
申请日：2017-10-19
摘要： An epoxy resin composition for a fiber-reinforced composite material, containing at least components [A], [B], [C], [D], and [E], wherein the epoxy resin composition when cured has a glass transition temperature greater than 220° C. and a storage modulus, as defined by a specific method, less than 35 MPa, as determined from an elastic shear modulus measured at a temperature of at least 35° C. higher than the glass transition temperature, wherein the components [A], [B], [C], [D], and [E] are:[A] at least one naphthalene-based epoxy resin having an EEW between 190 and 260 g/mol; [B] at least one epoxy resin having a functionality of three or more; [C] at least one amine curing agent; [D] at least one latent acid catalyst; and [E] at least one cycloaliphatic epoxy resin. This epoxy resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer an epoxy resin composition for a fiber-reinforced composite material where the cured material obtained by heating has high levels of heat resistance and microcrack resistance.
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公开(公告)号：US20190169356A1
公开(公告)日：2019-06-06
申请号：US16323147
申请日：2017-08-24
摘要： The embodiments herein relate to an epoxy resin composition containing a specific type of amine-based epoxy resin containing four epoxy groups per molecule, a prepreg, and a fiber-reinforced composite material. More specifically, the embodiments herein relate to an epoxy resin composition containing a combination of particular types of epoxy resin and curatives that provides high flexural modulus that is suitable for preparing a fiber-reinforced composite material capable of withstanding extreme use environments such as low-temperature environments and high-temperature moisture-absorbing environments. In addition, the embodiments herein relate to epoxy resin systems capable of achieving a high degree of cure (e.g., 85% or more) within a relatively short period of time (e.g., less than two hours) at a relatively low temperature (e.g., 132° C.).
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公开(公告)号：US20180244874A1
公开(公告)日：2018-08-30
申请号：US15754493
申请日：2016-08-26
CPC分类号： C08J5/042 , C08G59/226 , C08G59/24 , C08G59/50 , C08G59/72 , C08J5/24 , C08J2363/00
摘要： This invention relates to an epoxy resin composition for a fiber-reinforced composite material, which contains at least the following constituent components [A], [B], [C] and [D]: [A] at least one epoxy resin (other than a cycloaliphatic epoxy resin represented by formula (I)); [B] at least one amine curing agent [C] at least one latent add catalyst [D] at least one cycloaliphatic epoxy resin represented by formula (I), wherein Y is a single bond or represents a divalent structure having a molecular weight less than 45 g/mol This epoxy resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, it is possible to offer an epoxy resin composition for a fiber-reinforced composite material where the cured material obtained by heating has a high level heat resistance and strength properties.
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公开(公告)号：US20240093003A1
公开(公告)日：2024-03-21
申请号：US17767526
申请日：2020-10-14
IPC分类号： C08K5/5313 , C08G59/32 , C08G59/38 , C08G59/44 , C08G59/50 , C08G59/68 , C08J5/24 , C08L63/00
CPC分类号： C08K5/5313 , C08G59/3227 , C08G59/38 , C08G59/44 , C08G59/504 , C08G59/686 , C08J5/243 , C08J5/249 , C08L63/00 , C08J2363/02 , C08J2429/14
摘要： This invention relates to a flame retardant fiber-reinforced composite material based on an epoxy resin composition which includes at least one epoxy resin having an epoxy functionality of at least 2 as well as at least one organic phosphinic acid or derivative thereof (e.g., an organic phosphinic acid-modified epoxy resin), reinforced with a fiber having a thermal conductivity≥3 W/m·K at room temperature, as well as a prepreg for making such a flame retardant fiber-reinforced composite material. More specifically, a composite material is provided that contains a combination of particular types of epoxy resins, curatives, and reinforcing fibers that provide sufficient flame retardance for thin-ply laminates when cured at 163° C. for 15 minutes. These cured composites are also suitable for a variety of applications requiring flame retardancy.
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