The use of hybrid polymer composite materials to regulate the temperature coefficient of linear expansion of forming equipment

The greatest effect from the use of polymer composite materials is achieved in structures that have the highest possible requirements for a combination of strength properties, dimensional accuracy and low weight. The main method of manufacturing such parts is autoclave molding, which combines pressure and high temperatures. The requirements for the accuracy and quality of polymer composite materials parts are growing, as a result of which more and more attention should be paid to the appropriate shaping equipment. The ideal equipment should ensure form stability under cyclic temperature loads of autoclave molding, as well as have the necessary set of mechanical characteristics. At the same time, the correspondence of the temperature coefficient of linear expansion of the tooling material and the molded part must be observed, since it is the condition of the tooling at the time of molding the product that determines its final shape. It is proposed to use hybrid polymer composite materials, combining glass, aramid, and carbon fibers as reinforcing fillers, as a material for manufacturing forming equipment capable of providing thermophysical parameters set by the material of the molded part.
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