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首页> 外文期刊>Journal of Applied Polymer Science >Moisture sorption and thermal characteristics of polyaramide blend fabrics
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Moisture sorption and thermal characteristics of polyaramide blend fabrics

机译：聚芳酰胺混纺织物的吸湿性和热学特性

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摘要

Four types of fabrics woven from various polyaramid fibers of Nomex and Kevlar blends were characterized by morphology, XRD, elemental analysis, thermal analysis, and moisture adsorption isotherms. The blends consisted of Polybenzimidazole/Kevlar blend (40% PBI and 60% Kevlar (R)), Nomex Delta A (blend of 60% Kevlar and 40% Nomex (R)), Nomex Delta T (blend of 75% Nomex, 23% Kevlar, and 2% P140 antistatic fiber), and Nomex III (fabric with a 95/5 blend of Nomex and Kevlar) containing 1% steel fiber. TGA and DTG curves have been compared to evaluate thermal behavior of the PBI, Kevlar, and Nomex blends and the resuls were correlated with the moisture sorption data. The data were also compared with fiber morphologies provided by SEM and crystallinities derived from XRD diffractograms. Moisture adsorption isotherms were correlated with a number of empirical models, including Nernst, Freundlich, Handersen, Iglesias-Chirife, and with the models having a theoretical background such as Langmuir, BET, GAB, and Huttig. The linear regression models were statistically analyzed to obtain the best fitting model that explains the sorption profiles of the samples and theoretical monolayer moisture capacities of Nomex and Kevlar blends were calculated by using Huttig isotherms. (c) 2006 Wiley Periodicals, Inc.
机译：用形态，XRD，元素分析，热分析和水分吸附等温线表征了由Nomex和Kevlar共混物的各种聚芳酰胺纤维织成的四种织物。共混物包括聚苯并咪唑/芳纶共混物（40％PBI和60％Kevlar（R）），Nomex Delta A（共混60％Kevlar和40％Nomex（R）），Nomex Delta T（共混75％的Nomex，23 ％的凯夫拉纤维和2％的P140抗静电纤维）和Nomex III（含有Nomex和Kevlar的95/5混合物的织物）包含1％的钢纤维。比较了TGA和DTG曲线以评估PBI，Kevlar和Nomex共混物的热行为，结果与吸湿数据相关。还将数据与由SEM提供的纤维形态和从XRD衍射图得出的结晶度进行了比较。水分吸附等温线与许多经验模型（包括Nernst，Freundlich，Handersen，Iglesias-Chirife）以及具有理论背景的模型（例如Langmuir，BET，GAB和Huttig）相关。对线性回归模型进行统计分析以获得最佳拟合模型，该模型可以解释样品的吸附曲线，并使用Huttig等温线计算Nomex和Kevlar共混物的理论单层水分容量。 （c）2006年Wiley Periodicals，Inc.

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