一种采用半固化Z-pin制造K-cor夹层结构的方法

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一种采用半固化Z-pin制造K-cor夹层结构的方法

一种采用半固化Z-pin制造K-cor夹层结构的方法，属于复合材料夹层结构成型方法。该方法的关键之处在于：在泡沫芯材上下表面各铺放预浸织物层，将半固化的即Z-pin插入泡沫、两端各伸出一定长度；加热、加压使伸出预浸织物的Z-pin软化折弯与预浸织物结合形成增强泡沫芯材，按通用工艺制备面板、固化后得到K-cor夹层结构。通过Z-pin伸出泡沫部分与面板树脂共固化来增加界面的结合力，提高了K-cor夹层结构的抗弯、抗剪等性能。

Method of preparing K-cor sandwich structure bysemi-cured Z-pin

A method of preparing a K-cor sandwich structure bysemi-cured Z-pin belongs to shaping methods of composite material sandwichstructures. The method is characterized in that a pre-impregnated fabric layeris laid on each of the upper and lower surfaces of a foam core material; thesemi-cured Z-pin is inserted in the foam, wherein two ends of the Z-pin stretchout by a certain length; heating and compressing the structure in order tosoften and bend the part, stretching out of the pre-impregnated fabric, of theZ-pin, so that the Z-pin and the pre-impregnated fabric form a reinforced foamcore material; finally according to general technologies, a panel is preparedand the whole structure is cured to form the K-cor sandwich structure. In themethod, the part, stretching out of the foam, of the Z-pin is co-cured withresin in the panel to increase binding force of interfaces, thus improvinganti-bending and anti-shear performances and the like of the K-cor sandwichstructure.