摘要:
A prepreg for fiber-reinforced composite materials comprising (A) a reinforcing fiber having a modulus of elasticity of 200 GPa or more, (B) a fibrous thermoplastic resin having a modulus of elasticity of 100 GPa or less, and (C) a thermosetting matrix resin. The prepreg of the present invention does not only have excellent handling property equivalent to that of the prepreg with the conventional thermosetting resin as a matrix, but also gives excellent toughness to the resulting molded product without injuring the thermal and mechanical properties. Particularly, it has a high resistance to interlaminar fracture when exposed to impact, so that it is preferably used as a structural material for airplanes, etc.
摘要:
A resin composition for composites which comprises as essential components(A) a three-bismaleimide mixture of N,N'-diphenylmethanebismaleimide, N,N'-tolylenebismaleimide, and N,N'-trimethylhexamethylenebismaleimide and(B) an allyl etherified substituted phenol novolak resin and/or allyl phenyl ether compound represented by the following general formula (I): ##STR1## wherein, X denotes a direct bond or the divalent radical --CH.sub.2 --, ##STR2## --O--, --S--, --SO.sub.2 --, ##STR3## or ##STR4## and R.sub.1 through R.sub.4 are the same or different in a molecule and denote each --CH.sub.3, --C.sub.2 H.sub.5, --CH(CH.sub.3).sub.2, --nC.sub.3 H.sub.7, --nC.sub.4 H.sub.9, --C(CH.sub.3).sub.3, ##STR5## --CH.sub.2 CH(CH.sub.3).sub.2, or --Br.
摘要:
A resin composition for composites which comprises as essential components(A) a three-bismaleimide mixture of N,N'-diphenyl-methanebismaleimide, N,N'-tolylenebismaleimide, and N,N'-trimethylhexamethylenebismaleimide and(B) an allyl etherified substituted phenol novolak resin and/or allyl phenyl ether compound represented by the following general formula (I): ##STR1## wherein, X denotes a direct bond or the divalent radical ##STR2## and R.sub.1 through R.sub.4 are the same or different in a molecule and denote each --CH.sub.3, --C.sub.2 H.sub.5, --CH(CH.sub.3).sub.2, --nC.sub.3 H.sub.7, --nC.sub.4 H.sub.9, --C(CH.sub.3).sub.3, ##STR3## --CH.sub.2 CH(CH.sub.3).sub.2, or --Br.
摘要翻译:一种复合材料用树脂组合物,其包含作为(A)N,N'-二苯基甲烷双马来酰亚胺,N,N'-二亚甲基双马来酰亚胺和N,N'-三甲基六亚甲基双马来酰亚胺的三双马来酰亚胺混合物的主要组分(A)和(B)烯丙基醚化取代的 苯酚酚醛清漆树脂和/或由以下通式(I)表示的烯丙基苯基醚化合物:其中X表示直接键或二价基团,且R 1至R 4相同 或分别表示不同的-CH 3,-C 2 H 5,-CH(CH 3)2,-nC 3 H 7,-nC 4 H 9,-C(CH 3)3,-CH 2 CH(CH 3)2或-Br。
摘要:
An epoxy resin composition is disclosed that can be cured at a temperature of 150.degree. C. or below, and can be used to provide a high performance carbon fiber composite material having a 0.degree. direction bending strength of 220 kg/mm.sup.2 or over, and an interlayer shear strength of 10 kg/mm.sup.2 or over.The composition is made up of:(A) an epoxy compound containing 10 to 100% by weight of m- or o-methyl-p-N,N-diglycidyl-aminophenyl-ester or its oligomer,(B) diaminodiphenylsulfone and/or diaminodiphenylmethane,(C) dicyandiamide, 2,6-xylenylbiguanide, o-tolylbiguanide, diphenylguanidine, adipil dihydrazide, azelayl dihydrazide, or isophthalic acid dihydrazide, and(D) a urea compound.
摘要翻译:公开了能够在150℃以下的温度下固化的环氧树脂组合物,可用于提供0°方向弯曲强度为220kg / mm 2以上的高性能碳纤维复合材料,以及 层间剪切强度为10 kg / mm2以上。 该组合物由以下组成:(A)含有10〜100重量%的间或邻甲基-pN,N-二缩水甘油基 - 氨基苯基酯或其低聚物的环氧化合物,(B)二氨基二苯基砜和/或二氨基二苯基甲烷, (C)双氰胺,2,6-二甲苯基双胍,邻甲苯基双胍,二苯胍,己二酸二酰肼,壬二酰肼或间苯二甲酸二酰肼,(D)脲化合物。
摘要:
The present invention relates to a repair and reinforcement method for preexisting structures such as buildings or the like, and in particular, relates to a repair and reinforcement method for concrete structures, and to an anisotropic textile employed in this method. The present invention provides a method which permits execution even in low temperature conditions, and which moreover exhibits superior repair and reinforcement effects in a short period of time; during the impregnation of a resin into a sheet material comprising reinforcement fibers and the curing of this resin to form a fiber-reinforced resin layer which is used in the repair and reinforcement of preexisting structures, a reactive mixture having a gelling period of 15 minutes or more at a temperature of 20° C. and which polymerizes even at 5° C. and is curable within 6 hours, and which has as chief components thereof a monomer containing vinyl groups and a reactive oligomer having vinyl groups and/or a thermoplastic polymer, is employed as the resin. Furthermore, the present invention provides an anisotropic textile for use in the repair and reinforcement of preexisting structures.
摘要:
Epoxy resin compositions comprising (a) an epoxy resin, (b) a latent curing agent with curing power at 100° C. or below and (c) an aromatic amine-based curing agent and/or an alicyclic amine-based curing agent, which are curable in two stages, or epoxy resin compositions further comprising (d) a curing accelerator, as well as a prepregs comprising reinforcing fiber materials impregnated with the epoxy resin compositions. The compositions give die-releasable cured products by primary curing at low temperature, give highly heat-resistant cured products by secondary curing, and exhibit satisfactory stability at room temperature.