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Carbon fiber-reinforced composite material electrical loss heating temperature field active control method

A technology for reinforcing composite materials and heating temperature, which is applied in the field of active control of the heating temperature field of carbon fiber reinforced composite materials, which can solve problems such as uneven heating temperature field and achieve high-quality curing effects

Active Publication Date: 2018-05-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The purpose of the present invention is to propose an active control method for the electric loss heating temperature field of carbon fiber reinforced composite materials, aiming at the uneven distribution of the volume resistivity of the existing carbon fiber reinforced composite material components. Each layer arranges a large number of orderly array electrodes along the contour, combined with the temperature distribution data of online monitoring, adjusts the heating electric parameters between each pair of electrodes, and realizes the temperature distribution by using the mutual superposition or compensation of the uneven heating state in the action area of ​​each pair of electrodes Comprehensive electrical loss heating curing with uniformity and uniform curing quality

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  • Carbon fiber-reinforced composite material electrical loss heating temperature field active control method

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Embodiment

[0017] This embodiment is an active control process of the temperature field for heating and curing of typical aviation C-beam components. The carbon fiber reinforced bismaleic polyimide resin-based prepreg T700 / QY9611 of the component is laid up, and the layup method is , the thickness of the single-layer prepreg is 0.125mm, the size of the single-layer prepreg of the component is 800mm×2000mm, and the C-shaped curvature radius is 400mm; A group of array electrodes; the width of the single electrode is 50mm, the length is 60mm, and there is a quick disassembly cable connector at the end of the electrode; the single electrode is bonded by four polyimide films with a width of 50mm, and the contact part of each electrode and the material is 10mm; the electrodes are bonded by graphite conductive adhesive and prepreg. After laying up, there are 16 and 40 pairs of electrodes in the vertical and horizontal directions in each layer of the entire material. The width of each individua...

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Abstract

The invention discloses a carbon fiber-reinforced composite material electrical loss heating temperature field active control method. The method comprises putting a lot of ordered and mutually insulated array electrodes on edges of all layers of a composite material, independently electrifying the pairs of the electrodes to carry out electrical loss heating, and actively controlling an integral temperature field of the composite material through the monitored material interlayer and in-plane temperature field distribution as a feedback signal and superposition or compensation of uneven heatingstates in the action zones of the pairs of the electrodes. The method solves the problem that the heating temperature field is uneven because of the non-uniform distribution of volume resistivity anddielectric constant of the composite material in the electrical loss heating process, and realizes high-quality integrated electrical loss heat curing of the carbon fiber composite component.

Description

technical field [0001] The invention relates to an active control method for the heating temperature field of a carbon fiber reinforced composite material, in particular to an active control method for the electric loss temperature field of a carbon fiber reinforced resin matrix composite material component. Background technique [0002] Carbon fiber reinforced resin matrix composites have become a key material widely used in the aerospace field, and its high-efficiency and energy-saving curing technology is a key technology in the field of composite material manufacturing. Up to now, patents including 200310113547.4, 201410018321.4, 201580029111.8, 201510817586.5, 201611229851.9 have proposed a method of using carbon fiber itself as an impedance conductor, generating thermal energy by virtue of the conduction loss that occurs after electrification, heating the fiber and resin, and curing the composite material as a whole. The common features of the above methods are that on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/02B29C70/54
Inventor 李迎光刘舒霆
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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