Hand layup molding process of polymer matrix composite

Abstract

The invention relates to a hand layup molding process of a polymer matrix composite, comprising the steps of material preparation, product manufacturing and post solidification: the product manufacturing comprises the steps of wrapping fixedly two pieces of fiber cloth for reinforcement with glue at both ends of a foam core, then spraying glue in the full length of the whole foam core and coating a layer of fiber cloth for reinforcement, and finally wrapping plural layers of fiber cloth for reinforcement or a layer of surfacing mats by same way; the post solidification comprises the steps of coating proportioned resin on the inner wall of the a mould cavity, then brushing fiber on prepared product and paving in the cavity, and then compacting and flattening the fiber cloth for reinforcement or surfacing mats on the surface of the product with a brush or a roller so as to avoid bubble left; finally closing the mould and pressurizing and heating with a vulcanization machine. The hand layup molding process of a polymer matrix composite has a series of advantages of high production efficiency, high quality of prepared products and saves the amount of resin and the like.

Description

technical field [0001] The invention belongs to the manufacturing process of polymer-based composite materials, in particular to a hand-lay-up molding process of polymer-based composite materials. Background technique [0002] The hand lay-up process is the first invention in the production of polymer-based composite materials and has the widest application range. Other methods are developed and improved on the basis of the hand lay-up process. The biggest advantage of the hand lay-up process is that it does not require complicated equipment, but only needs simple molds and tools, so it has low investment and quick results, which is suitable for the development of township enterprises in my country; the production technology is easy to master, and production can be carried out after a short-term training ;The FRP products produced are not limited by size and shape, such as: large cruise ships, domes, sinks, etc.; can be combined with other materials (such as: metal, wood, foa...

AI Technical Summary

Problems solved by technology

Although the traditional hand lay-up molding process has many advantages mentioned above, it has the disadvantages of low production efficiency, slow speed, and long production cycle, and is not suitable for the production of mass products.

In addition, due to the need to brush the resin many times, the amount of resin used is very large, and it may cause the bursting of the polymer matrix composite material, resulting in unstable product quality and high product scrap rate

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