A kind of repair method of thermoplastic honeycomb panel

Abstract

The invention discloses a repairing method of a thermoplastic cellular board. The method comprises the following steps: (1) positioning, (2) saw cutting, (3) filling, (4) ironing flatly, namely with glass fiber reinforced polypropylene plane strips with the thickness of 0.5mm-1.0mm and the width of 30mm-70mm, and with a release film with the thickness is 0.04mm-0.10mm, resistance to high temperature of 250 DEG C and the surface tension of a release surface being less than 32 dyne, covering edge joints with the glass fiber reinforced polypropylene plane strips and the release film, flatly ironing at 180-240 DEG C for melting the glass fiber reinforced polypropylene plane strips, and impacting till the melted material is tightly adhered to the joints, and (5) performing surface treatment, namely taking off the release film, polishing and spraying lacquer. According to the technical scheme, the operation is simple and convenient, the repairing speed and the fastness degree are high, no obvious repairing trace exists on the surface, the visual effect is good, and the mechanical strength is high.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a method for repairing a thermoplastic honeycomb panel. Background technique [0002] The patent document with the publication number CN102689458A discloses a honeycomb panel and its preparation method. The honeycomb panel includes a honeycomb core material layer composed of multiple double-layer composite pipes and a surface material layer compounded on the upper and lower surfaces of the core material layer. The outer layers of the adjacent double-layer composite pipes are bonded together, and the end faces of the adjacent inner layers of the double-layer composite pipes are fused to form a glue knot. [0003] The above-mentioned thermoplastic honeycomb composite board has the advantages of light weight, high strength, environmental protection and recyclability, and is widely used in vans, furniture, packaging and other fields. In daily use, it is possi...

AI Technical Summary

Problems solved by technology

In daily use, it is possible to encounter strong impacts and collisions, resulting in local damage to the thermoplastic honeycomb composite panel. If the damaged panel is replaced directly, it will not only be costly and cumbersome to operate, but also cause material waste.

Conventional repair methods include gluing method, hot-melt welding method, mechanical connection method, etc., but these methods either require special tools or the repair traces on the surface are too obvious, which affects the visual effect, and the repaired board is also weaker in terms of mechanical strength. Difference

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