Novel carbon fiber reinforcement matching primer and preparation method thereof

Abstract

The invention relates to the technical field of building structural adhesives, and discloses a novel carbon fiber reinforcement matching primer which comprises a component A and a component B in a mass ratio of 2: 0.8-1.2; the component A comprises the following components in parts by weight: 50.0 to 90.0 parts of E-51 epoxy resin; 2.0 to 15.0 parts of a toughening agent; 10.0 to 50.0 parts of a diluent; 0.5 to 4.0 parts of a coupling agent A and 0.1 to 1.5 parts of a surfactant; the component B comprises the following components in parts by weight: 80.0 to 100.0 parts of a modified amine curing agent; 0.5 to 3.0 parts of an adhesion promoter; 1.0 to 3.0 parts of a coupling agent B; 2.0 to 3.0 parts of a flame retardant and 0.5 to 1.0 part of an antioxidant. The primer can improve the bonding strength between concrete and a leveling material or an impregnated resin interface at a wet interface or a non-dry base layer interface, and seal fine holes of a concrete base layer, so that carbon fiber sheets coated with an impregnated adhesive can be effectively adhered and compacted with the concrete base layer to form a composite whole and achieve the effect of resisting external forces.

Description

technical field [0001] The invention relates to the technical field of building structural adhesives, in particular to a novel primer for carbon fiber reinforcement and a preparation method thereof. Background technique [0002] With the continuous development of my country's economic construction, the construction industry is also ushering in a period of rapid development. People pay more and more attention to the safety of building structures. Whether it is for the reinforcement of buildings and bridges in some earthquake zones, or the renovation of many old buildings in China, higher requirements are placed on reinforcement materials. [0003] There are many reinforcement methods, and the more mature methods include enlarging cross-section reinforcement, outsourcing steel reinforcement, prestressed reinforcement, bonded steel reinforcement, and shotcrete technology, etc., but usually have certain defects, except for the common chemical corrosion problem. , such as the b...

AI Technical Summary

Problems solved by technology

However, due to the fact that the traditional construction is carried out in anhydrous and dry conditions, the reinforcement construction in some humid and dark environments and rainy seasons and rainy areas cannot be carried out normally because of the bonding effect of epoxy impregnated resin on the wet interface. Not very good, traditional primers do not bond well to wet interfaces

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