Hot isostatic pressing device for carbon-based composite material and preparation method of composite material

Abstract

The invention relates to a hot isostatic pressing device for a carbon-based composite material, and the device comprises a rotary drum chamber, a ferromagnetic induction coated metal sleeve, an annular alternating induction coil, a controller, a centrifugal power assembly and a sensor system unit, wherein the ferromagnetic induction coated metal sleeve is arranged in the rotary drum chamber, the annular alternating induction coil is wound on the outer side of the rotary drum chamber, the centrifugal power assembly drives the rotary drum chamber to rotate and comprises a driving motor, a motor shaft of the driving motor penetrates into the rotary drum chamber from the lower end of the rotary drum chamber, the controller is connected with the rotary drum chamber through a bus, and the controller is wirelessly associated with the sensor system unit. According to the hot isostatic pressing device, the carbon-based composite material is sintered and densified in an induction heating and centrifugal loading mode, the equipment structure is simple, a high-temperature and high-pressure sealing container is not needed, use is safer, and the equipment manufacturing cost and the use and maintenance cost are lower.

Description

technical field [0001] The invention relates to a hot isostatic pressing device for carbon-based composite materials and a preparation method for the composite material, belonging to the technical field of carbon-based composite materials. Background technique [0002] Due to the characteristics of high temperature resistance, small thermal expansion and good high temperature strength, the carbon matrix composite material reinforced by carbon fiber braid has irreplaceable advantages in the field of thermal structural materials. For example, aerospace thermal ablation parts and thermal field structural materials are mostly used Carbon fiber braids reinforce carbon matrix composites. The preparation of carbon fiber braided composite materials is mainly realized by two methods, chemical vapor infiltration (CVI) and hot isostatic pressing. Chemical vapor infiltration can obtain a relatively ideal density of composite materials, but the deposition efficiency is low and the prepa...

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Problems solved by technology

[0003] However, at present, hot isostatic pressing equipment mainly uses graphite or electrothermal metal materials as heating elements, which brings difficulties to the sealing of high-pressure vessels and requires relatively high heat shielding layers; in addition, current conventional hot isostatic pressing equipment mainly uses Ar or N 2 As a pressure transmission medium, the high temperature and high pressure environment obtained by expanding the gas at high temperature densifies the composite material to be sintered, which brings a huge test to the sealing and structural safety of the equipment. This type of high pressure container equipment generally requires annual inspection and strict maintenance. , so the manufacturing cost and maintenance cost of the equipment are relatively high

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