Fluid sorption characterization of PEEK matrices and composites
Fluid sorption characterization of PEEK matrices and composites
复制标题
PEEK 基质和复合材料的流体吸附表征
DOI：
10.1002/pen.760280912
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发表时间：
1988
影响因子：
3.2
通讯作者：
J. Seferis
中科院分区：
文献类型：
--
作者：
E. Stober;J. Seferis
纯聚醚醚酮（PEEK）和碳纤维增强PEEK（APC-2）标本制备使用各种冷却速率，以实现一系列的堆叠。将非晶试样暴露于各种流体中，以确定能够强烈影响材料的渗透剂类型。这使得PEEK的溶解度参数和氢键指数的估计值分别为9.5和3.1。二氯甲烷被用来研究渗透剂吸附的动力学。数据表明情况II的行为，与初始结晶度有一个显着的影响的动力学和平衡数据。因此，提出了一个模型，能够描述的吸附水平和渗透深度作为时间的函数给定的样品结晶度和吸附温度。对于案例II行为，纯PEEK和纤维增强PEEK的吸附动力学没有差异。最后，在吸附过程中测得的动态力学性能被认为是依赖于吸附过程。
Neat poly(ether-ether-ketone) (PEEK) and carbon fiber reinforced PEEK (APC-2) specimens were prepared using a variety of cooling rates to achieve a range of crystallinities. Amorphous specimens were exposed to a variety of fluids to determine the penetrant types which are able to strongly influence the material. This allowed the estimation of the solubility parameter and hydrogen bonding index for PEEK to be 9.5 and 3.1, respectively. Methylene chloride was used to investigate the kinetics of penetrant sorption. The data demonstrated Case II behavior, with the initial crystallinity having a pronounced effect on both the kinetic and equilibrium data. Accordingly, a model was proposed capable of describing the sorption level and penetration depth as a function of time given the sample crystallinity and sorption temperature. With Case II behavior there was no difference in the sorption kinetics of neat and fiber reinforced PEEK. Finally, the dynamic mechanical properties measured during sorption were found to be dependent on the sorption process.