Self-heating molding repair device of medium-temperature curing composite material

Abstract

The invention provides a self-heating molding repair device of a medium-temperature curing composite material. The repair device comprises a vacuum pressing layer for pressing a composite material repair piece on the surface of a repaired composite material structure, and a heating layer module. The repair device is characterized in that the vacuum pressing layer includes a high-temperature resisting film, and an air sucking port mounted in the high-temperature resisting film; the air sucking port is a one-way valve; the heating layer module includes a self-heating material layer formed by a self-heating material solid part, an insulation layer for bonding the self-heating material layer on the outer surface of the vacuum pressing layer and coating the self-heating material layer, a water injecting port and an exhaust port; and the insulation layer includes a high-temperature resisting film on the outermost layer, a ventilation felt on the middle layer, and a silica gel film on the inner layer. The repair device use self heat release performance of a self-heating material for quickly and conveniently curing and repairing composite material patches, satisfies the curing requirements of the composite material patches through heating temperature and time, and can enable repaired pieces to obtain excellent mechanical performances.

Description

technical field [0001] The invention mainly relates to the technical field of repairing composite material patches. The device uses a new type of mixed material to heat and solidify the patch by using its own heat release. Background technique [0002] Due to construction defects or mechanical damage during maintenance, as well as the aging of lining materials during service, it is inevitable that the composite structure will be partially damaged. In recent years, the use of composite material patch to repair the structural damage of metal components has been widely researched and applied at home and abroad. In the early 1970s, the Australian Aeronautical Research Institute first used composite material bonding repair technology on aircraft structures. In the 1980s, the United States also carried out corresponding research and repaired C-141 with composite materials. At present, the damage repair of composite materials has formed a relatively complete system. The research...

AI Technical Summary

Problems solved by technology

[0008] At present, there is a self-vulcanized rubber heating vulcanization technology using self-heating materials in the prior art, but this technology has problems such as poor adhesion of repair materials, uneven mixing of self-heating materials, and difficulty in discharging exothermic gas products, which affect the heating effect.

In the prior art, no self-heating related technology that satisfies composite material forming, repairing and curing has been found.

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