Two-component epoxy adhesive and preparation method thereof

Abstract

The invention relates to a two-component epoxy glue and a preparation method thereof. The two-component epoxy adhesive includes A component and B component, and the A component includes: epoxy resin, toughener, liquid flame retardant, powder flame retardant, diluent, defoamer, Reinforcing filler; the B component includes aliphatic amine curing agent, polyether amine, polyamide 650, and curing accelerator. The present invention screens the components of the epoxy adhesive so that the components can complement each other in performance and form a two-component epoxy adhesive system with superior comprehensive performance through synergistic cooperation, which significantly improves the toughness, anti-peel strength, The impact resistance and flame retardancy have also reached the UL94-V0 level, and the operating time is relatively suitable, and the curing time is short, which can realize continuous production.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a two-component epoxy adhesive and a preparation method thereof. Background technique [0002] The aluminum honeycomb panel is made of a honeycomb core plus a surface panel. The unique material and sandwich structure make the aluminum honeycomb panel have high strength, strong rigidity, light weight, durability, and good heat insulation and sound insulation. Therefore, it is widely used in high-speed On trains, subways, light rails and intercity rail trains, with the rapid development of my country's high-speed rail, high-speed rail aluminum honeycomb panel materials will surely play a more important role. [0003] The bonding strength between the aluminum honeycomb core and the panel directly affects the safety and service life of the aluminum honeycomb panel. Although the current domestic aluminum honeycomb adhesives have the advantages of high strength and superior aging resistance, t...

AI Technical Summary

Problems solved by technology

Although the current domestic aluminum honeycomb adhesives have the advantages of high strength and superior aging resistance, they have shortcomings such as short operating time, and the maximum strength can only be achieved after a certain period of reaction, it is difficult to achieve continuous production, and the mechanical properties are not ideal.

[0004] Epoxy resin has the characteristics of excellent mechanical properties, adhesion, electrical insulation and good manufacturability, so it is widely used in the industrial field, but the cured product of ordinary epoxy adhesive is generally brittle when it is not toughened. Small, poor impact resistance, and peel strength is an important technical index to detect the quality of aluminum honeycomb panels, and the adhesive layer of aluminum honeycomb panels is brittle, and aluminum honeycomb panels will delaminate after long-term vibration

[0005] As the demand for aluminum honeycomb panel adhesives continues to increase, the quality and performance of existing technical products on the market are difficult to adapt to and meet the needs of applications, which inevitably has a great impact and restriction on the development of the industry.

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