Preparation method and equipment of SiC fiber prepreg tape with attached interface layer

Abstract

The invention provides a preparation method of a SiC fiber prepreg tape with an attached interface layer. The preparation method comprises the following steps of introducing a continuous silicon carbide fiber bundle onto a tension pulley after being unwound through a godet roller and a guide wheel, sending the continuous silicon carbide fiber bundle straightly into a desizing device to expand thecontinuous silicon carbide fiber bundle; introducing the continuous silicon carbide fiber bundle onto a gluing device, so that glue fully infiltrates the continuous silicon carbide fiber, after that,introducing the continuous silicon carbide fiber bundle to a silk spreading device, and fully spreading and sizing the continuous silicon carbide fiber bundle by a drawing-in roller in the silk spreading device; and enabling the fully spread and sized continuous silicon carbide fiber bundle to enter a winding roller to obtain the flat and uniform prepreg tape. The prepreg tape prepared by the invention not only can greatly improve the toughness of the silicon carbide fiber, but also a deposited interface layer is uniform, meanwhile, the overlapped parts of two adjacent fiber bundles in the prepreg tape are few, the fiber bundle is good in flatness and thin in thickness, in addition, the preparation equipment can control parameters in real time, and full automation and complete controllability can be realized.

Description

technical field [0001] The invention relates to the technical field of prepreg preparation, in particular to a method and equipment for preparing a SiC fiber prepreg with an interface layer. Background technique [0002] With the continuous advancement of aerospace and aviation technology, the requirements for materials are getting higher and higher. Compared with various alloys, composite materials made of carbon fiber or silicon carbide fiber have better density, high temperature resistance and service life. There are obvious advantages, among which, the ceramic matrix composite material prepared by silicon carbide fiber has more outstanding advantages in high temperature oxidation resistance. [0003] The existing traditional method of preparing silicon carbide fiber ceramics is to weave first and then deposit the interface layer. For example, the patent with the publication number CN109650924A adopts the method of polar weaving the prefabricated body first and then depos...

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Problems solved by technology

But prior art mainly researches on carbon fiber prepreg, as the patent No. CN103158209B discloses the preparation method of continuous carbon fiber reinforced thermoplastic prepreg, the patent No. CN 106239937 A discloses the preparation of continuous fiber reinforced thermoplastic prepreg Belt device, considering that silicon carbide fiber is a brittle material with low elongation at break and low elasticity, there is an urgent need for a preparation method and equipment for preparing silicon carbide fiber prepreg tape to improve the performance of silicon carbide fiber composite materials

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