The main objectives of this article were to examine the feasibility of high quality laminate (carbon PEKK—Poly-Ether-Ketone-Ketone) manufacturing under low pressure and to analyze the principal phenomena governing the consolidation quality. The quality of laminate was evaluated in terms of the interlaminar shear strength measured by short-beam shear test and the residual voids observed by micrographic images. This work underlined the possibility to obtain a good interlaminar consolidation quality, i.e., interlaminar shear strength of 100 MPa under a low pressure of 7.0 × 10⁴ Pa even for prepregs which were not designed for out-of-autoclave processes. To better understand the interlaminar consolidation phenomena, we developed an experimental set-up for the in-situ monitoring of the laminate consolidation to measure the change of laminate thickness and the temperature gradient in the thickness direction during the manufacturing process. In particular, we identified two major phenomena, the establishment of intimate contact between the adjacent layers at the glass transition temperature and the molten matrix flow at the melting temperature. The assumption on the intimate contact establishment at the glass transition temperature was confirmed by the heat transfer simulation considering the change of thermal contact resistance at the interlaminar interface.

本文的主要目的是检验在低压下制造高质量层压板（碳PEKK-聚醚-酮-酮）的可行性，并分析控制固结质量的主要现象。根据通过短梁剪切试验测量的层间剪切强度和通过显微图像观察到的残余空隙，评价层压体的质量。这项工作强调了即使不是为高压釜工艺设计的预浸料，也可以获得良好的层间固结质量的可能性，即在7.0×10 ⁴ Pa的低压下获得100 MPa的层间抗剪强度。为了更好地了解层间固结现象，我们开发了一种实验装置原位监视层压板固结，以测量制造过程中层压板厚度的变化以及厚度方向上的温度梯度。尤其是，我们确定了两个主要现象，即在玻璃化转变温度下相邻层之间的紧密接触和在熔融温度下熔融基质的流动。考虑到层间界面处的热接触电阻的变化，通过传热模拟证实了在玻璃化转变温度下建立紧密接触的假设。