连续纤维增强聚丙烯复合片材及复合蜂窝板的制备及性能研究
发布时间：2018-12-18 12:07
【摘要】：连续纤维增强热塑性片材以其优异的机械性能、生产工艺的连续性及可回收利用的环保性已逐渐替代纤维增强热固性片材。以连续纤维增强热塑性层合片材为面板复合热塑性蜂窝芯所制备的热塑性复合蜂窝板,是一种新型的高强轻质板材。可广泛应用于交通、建筑等“民生”领域。本文采用模压成型工艺制备三类连续玻纤/聚丙烯层合片材,并以圆形聚丙烯蜂窝芯为夹层结构,采用热压熔合方法制备三种连续玻纤/聚丙烯层合片材复合蜂窝板材。深入研究了层合片材与复合蜂窝板的制备工艺,并研究分析了层合片材的结构与蜂窝芯结构对复合蜂窝板性能的影响。采用插入薄层的方法改善层合片材层间剪切性能。以及对层合片材及复合蜂窝板不同的破坏形式进行研究,具体内容如下：(1)通过实验研究了模压成型工艺参数对制备连续玻纤/聚丙烯混编纱层合片材、连续玻纤/聚丙烯单向层合片材与连续玻纤/聚丙烯交叉层合片材,以及层合层数、纤维排布角度等对层合片材机械性能的影响。采用添加聚丙烯薄层及马来酸酐接枝聚丙烯薄层的方法改善层合片材层间剪切性能。(2)以制备的三种层合片材为面板,热压熔合制备复合蜂窝板,分析研究了面板结构(面板种类、层数及铺层方式),蜂窝芯结构(蜂窝芯高度、蜂窝芯壁厚及蜂窝芯孔径)对三类复合蜂窝板力学性能的影响,讨论分析影响复合蜂窝板性能的关键因素。(3)研究了三类连续玻纤/聚丙烯层合片材不同的拉伸及弯曲破坏形式,并分析其产生原因。同样对连续玻纤/聚丙烯层合片材复合蜂窝板的平压、弯曲与侧压破坏形式进行分析研究,为复合蜂窝板的应用提供使用规范。
[Abstract]:Continuous fiber reinforced thermoplastic sheet has been gradually replaced by fiber reinforced thermosetting sheet because of its excellent mechanical properties, continuous production process and recyclable environmental protection. The thermoplastic composite honeycomb plate made of continuous fiber reinforced thermoplastic laminated sheet is a new type of high strength light weight plate. Can be widely used in transportation, construction and other "people's livelihood" field. In this paper, three kinds of continuous glass fiber / polypropylene laminated sheets were prepared by moulding process, and three kinds of continuous glass fiber / polypropylene composite honeycomb sheets were prepared by hot pressing fusion method with circular polypropylene honeycomb core as sandwich structure. The preparation process of laminated sheet and composite honeycomb plate was studied, and the effects of laminated sheet structure and honeycomb core structure on the properties of composite honeycomb plate were studied. The interlaminar shear property of laminated sheet was improved by inserting thin layer. The main contents are as follows: (1) the effect of molding process parameters on the preparation of continuous glass fiber / polypropylene blended yarn laminated sheet was studied by experiments, and the different failure modes of laminated sheet and composite honeycomb sheet were studied as follows: (1) the influence of molding process parameters on the preparation of continuous glass fiber / polypropylene blended yarn laminated sheet was studied. The effects of unidirectional laminated glass fiber / polypropylene laminated sheet and continuous glass fiber / polypropylene cross laminated sheet, as well as the number of laminated layers and fiber arrangement angle, on the mechanical properties of laminated sheet. The interlaminar shear properties of laminated sheets were improved by adding polypropylene thin layer and maleic anhydride grafted polypropylene thin layer. (2) the composite honeycomb plate was prepared by hot pressing fusion with three kinds of laminated sheets as panel. The effects of panel structure (panel type, layer number and layering mode) and honeycomb core structure (honeycomb core height, honeycomb core wall thickness and honeycomb core aperture) on the mechanical properties of three kinds of composite honeycomb panels are analyzed and studied. The key factors affecting the properties of composite honeycomb plates were discussed. (3) three kinds of continuous glass fiber / polypropylene laminates were studied in different tensile and flexural failure modes, and the causes were analyzed. At the same time, the failure modes of flat compression, bending and lateral compression of continuous glass fiber / polypropylene laminated composite honeycomb plate are analyzed and studied, which provides the application standard for the composite honeycomb plate.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332
本文编号：2385822
[Abstract]:Continuous fiber reinforced thermoplastic sheet has been gradually replaced by fiber reinforced thermosetting sheet because of its excellent mechanical properties, continuous production process and recyclable environmental protection. The thermoplastic composite honeycomb plate made of continuous fiber reinforced thermoplastic laminated sheet is a new type of high strength light weight plate. Can be widely used in transportation, construction and other "people's livelihood" field. In this paper, three kinds of continuous glass fiber / polypropylene laminated sheets were prepared by moulding process, and three kinds of continuous glass fiber / polypropylene composite honeycomb sheets were prepared by hot pressing fusion method with circular polypropylene honeycomb core as sandwich structure. The preparation process of laminated sheet and composite honeycomb plate was studied, and the effects of laminated sheet structure and honeycomb core structure on the properties of composite honeycomb plate were studied. The interlaminar shear property of laminated sheet was improved by inserting thin layer. The main contents are as follows: (1) the effect of molding process parameters on the preparation of continuous glass fiber / polypropylene blended yarn laminated sheet was studied by experiments, and the different failure modes of laminated sheet and composite honeycomb sheet were studied as follows: (1) the influence of molding process parameters on the preparation of continuous glass fiber / polypropylene blended yarn laminated sheet was studied. The effects of unidirectional laminated glass fiber / polypropylene laminated sheet and continuous glass fiber / polypropylene cross laminated sheet, as well as the number of laminated layers and fiber arrangement angle, on the mechanical properties of laminated sheet. The interlaminar shear properties of laminated sheets were improved by adding polypropylene thin layer and maleic anhydride grafted polypropylene thin layer. (2) the composite honeycomb plate was prepared by hot pressing fusion with three kinds of laminated sheets as panel. The effects of panel structure (panel type, layer number and layering mode) and honeycomb core structure (honeycomb core height, honeycomb core wall thickness and honeycomb core aperture) on the mechanical properties of three kinds of composite honeycomb panels are analyzed and studied. The key factors affecting the properties of composite honeycomb plates were discussed. (3) three kinds of continuous glass fiber / polypropylene laminates were studied in different tensile and flexural failure modes, and the causes were analyzed. At the same time, the failure modes of flat compression, bending and lateral compression of continuous glass fiber / polypropylene laminated composite honeycomb plate are analyzed and studied, which provides the application standard for the composite honeycomb plate.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB332
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