浅谈碳纤维预浸料中铺放纤维非织造网布的适用性

选取了两种纤维非织造网布,分别在进口单向碳纤维预浸料和国产单向碳纤维预浸料层与层之间进行铺放,采用预浸料成型工艺制备不同性能的层合板,并通过测试层合板试样的力学性能和孔隙率,表明纤维非织造网布在碳纤维预浸料成型技术中的适用性。对比测试数据结果发现:纤维非织造网布经向纤维纤度、纬向纤维纤度、面密度选材合适时,在碳纤维预浸料层合板中表现出了优异的适用性;纤维非织造网布经向纤维纤度及纬向纤维纤度较小、面密度选择较大时,在碳纤维预浸料层合板中虽然也表现出良好的工艺适用性,但是碳纤维预浸料层合板的力学性能会降低,孔隙率会偏大。

Discussion on the Applicability of Laying Open-Meshed Nonwovens in Carbon Fiber Prepreg

Two kinds of open-meshed nonwovens were laid between the layers in the imported unidirectional carbon fiber prepreg and the domestic unidirectional carbon fiber prepreg. Prepreg molding process was used to prepare different properties laminates. The mechanical properties and porosity of the laminate indicated the applicability of the open-meshed nonwovens in the carbon fiber prepreg forming technology. According to the results of the test data, it shows that the open-meshed nonwovens exhibite excellent applicability in the carbon fiber prepreg laminate when the warp fineness, the weft fineness and the area density are selected to be properly. Although it also shows good process performance in carbon fiber prepreg laminates when the open-meshed nonwovens has a smaller selection of warp fineness, weft fineness, and a larger selection of area density, the mechanical properties of carbon fiber prepreg laminates are reduced and the porosity will be larger.