局部凸模在复合材料袋压成型中的应用

Application of Local Punch in the Composite Bag Pressure Molding

对于具有局部小曲率半径型面复合材料产品的成型,在采用单模和袋压成型时容易出现富胶、缺胶、分层、空隙和气泡等缺陷。而采用对模和RTM技术成型,又因模具制造成本高,制造周期长等原因而不太适用。通过了十几年的摸索,采用了一种配有局部凸模袋压成型的模具,即在凹模中进行裱糊之后,在具有小曲率半径型面处加装局部凸模,利用橡胶袋中充入压缩空气的压力推动局部凸模达到小曲率半径型面成型的目的。事实已经证明这种成型方法,对解决具有局部小曲率半径型面复合材料产品的成型具有成型质量高、经济和高效的作用。

For the local radius of curvature with molding surface composite products, in a single mode andrich bag glue, lack of glue, delamination, voids and bubbles and other defects prone to pressuremolding. And the use of RTM technology and mold molding, mold manufacturing and because ofhigh cost, long production period and other reasons not suitable. Through more than ten years of exploration, using a mold with local mold bag molding, followed by pasting in the mold, in a small radius of curvature surface is provided with the local master, the rubber bag is filled with the compressed air pressure to reach the local radius of curvature type mold surface molding the purpose of use. Facts have proved that the molding method, to solve the local radius of curvaturewith molding surface composite products with high molding quality, economic and efficient role.