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Akademický článek

Effect of solar radiation on the properties of aramid fibers and composites

Autor: LI Ya-feng, LI Song-ming, HEI Yan-wei, XING Li-ying, CHEN Xiang-bao

Publikováno v: Cailiao gongcheng, Vol 47, Iss 4, Pp 39-46 (2019)

K49 and F-Ⅲ two kinds of different structure aramid fibers and their 5224A epoxy matrix composites were selected. The tension strength of single fiber, FTIR, XPS, DSC, SEM,mechanical and dielectrical properties was used to characterize the physicoc

Externí odkaz: https://doaj.org/article/c782ff5290494f63856c8d1b244345db

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Akademický článek

Effect of Heterogeneous Resin Curing Agent on Micro-mechanical Uniformity of Resin Matrix of Composites

Autor: GUO Miao-cai, HONG Xu-hui, LI Ya-feng

Publikováno v: Cailiao gongcheng, Vol 46, Iss 10, Pp 142-148 (2018)

Preparation of prepregs by hot melt method is generally involved the infiltration of resin. For the epoxy resin with a heterogeneous curing system, the preparation of large thickness prepregs may be affected by the uneven distribution of curing agent

Externí odkaz: https://doaj.org/article/6b865eca6a754d20873edfc965a8ed47

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Akademický článek

Crystal structure of the catena-poly[bis(1H-imidazole-κN)-(μ2-furan-2,5-dicarboxylato-κ2O1:O4)manganese(II)]monohydrate, C12H12MnN4O6

Autor: Wang Yuan-Rui, Gao Wen-Yuan, Li Ya-Feng

Publikováno v: Zeitschrift für Kristallographie - New Crystal Structures, Vol 231, Iss 1, Pp 69-70 (2016)

C12H12MnN4O6, monoclinic, P21/c (no. 14), a = 8.1583(16) Å, b = 16.525(3) Å, c = 13.134(3) Å, β = 117.96(3)°, V = 1564.0(7) Å3, 4 = 2, Rgt(F) = 0.0503, wRref(F2) = 0.1579, T = 293 K.

Externí odkaz: https://doaj.org/article/3fddeec37f7143a5a77ed97e63f11d7b

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