Sand grain pressurization auxiliary method for composite fiber hull

Abstract

The invention relates to a sand grain pressurization auxiliary method for a composite fiber hull. The method comprises the following steps that carbon fiber cloth or glass cloth is sequentially laid layer by layer on a mold, and the position between two adjacent layers of carbon fiber cloth or glass cloth is filled with epoxy resin to form a carbon fiber hull; a layer of tetrafluoroethylene clothand a layer of isolating film are sequentially laid on the surface of the uppermost-layer carbon fiber cloth or glass cloth of the carbon fiber hull from bottom to top; sand grains are poured into themold, and are uniformly laid on the surface of the isolating film, and the carbon fiber cloth or glass cloth laid in all layers are pressurized; and the sand grains are recovered after the epoxy resin is cured, and the isolating film and the tetrafluoroethylene cloth are sequentially removed. In this way, the area with narrow space and the complex concave surface can be pressurized, the pressurization of wet process forming can be effectively completed, products are guaranteed to be qualified, meanwhile, the sand grains can be prevented from being in direct contact with the carbon fiber clothor the glass cloth and the epoxy resin glue, the product quality is further improved, the sand grains can be reused, the cost is saved, and the efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of ship hulls, and in particular relates to an auxiliary sand pressurizing method for a composite fiber ship hull. Background technique [0002] At present, the composite fiber hulls on the market are formed by composite hand lay-up wet method. In the process of manufacturing and repairing, the main pressurization methods are molding and vacuum bagging. However, the applicant found that in the wet paving of composite materials, it is difficult to manually make bags and pressurize in many areas with narrow spaces and complex concave surfaces, and the bag making takes a long time and wastes auxiliary materials. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a method that can pressurize areas with narrow spaces and complex concave surfaces, avoid pressure leakage, and prevent sand particles from interacting with carbon fiber c...

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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a method that can pressurize areas with narrow spaces and complex concave surfaces, avoid pressure leakage, and prevent sand particles from interacting with carbon fiber cloth or glass cloth and epoxy resin. Direct contact with resin glue, sand pressure auxiliary method for composite fiber hull with guaranteed product quality

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