Normal-temperature curing flexibility epoxy resin waterproof binder for roads and bridges and preparation method of normal-temperature curing flexibility epoxy resin waterproof binder

Abstract

The invention discloses a normal-temperature curing flexibility epoxy resin waterproof binder for roads and bridges. The normal-temperature curing flexibility epoxy resin waterproof binder is characterized in that the waterproof binder is prepared from a component A and a component B, the component A is prepared form bisphenol A glycidyl ether epoxy resin, a toughening agent a, namely a rubber toughening agent, and an active diluent, and the component B is prepared form a polyamide curing agent and polyether amine curing agent mixed curing agent, a toughening agent b, namely a reacting toughening agent, and an amine accelerant, wherein the mass ratio of the component A to the component B during using is (100:35) to (100:50). The epoxy resin binder can be cured within 24 hours at the room temperature environment, and has high strength and high elasticity.

Description

technical field [0001] The invention relates to an epoxy resin adhesive, in particular to a normal temperature curing flexible epoxy resin waterproof adhesive for road bridges and a preparation method thereof. Background technique [0002] With the rapid development of highway construction in my country, the construction of long-span bridges is also increasing year by year. The bridge deck pavement can effectively prevent the wheels from directly wearing the bridge deck and spreading loads, and at the same time provide a smooth, non-slip and comfortable contact surface for vehicles. The bridge deck pavement is divided into pavement main body, waterproof layer and adhesive layer, among which, the waterproof adhesive layer is mainly responsible for connecting the pavement main body and the surface of the bridge body in the bridge pavement to make it a whole and improve the stress of the bridge. At the same time, it prevents moisture from invading the bridge body, destroying th...

AI Technical Summary

Problems solved by technology

Among them, the epoxy resin material is a thermosetting material, but when the epoxy resin binder is not toughened, the cured product is relatively brittle, and the disadvantages of anti-stripping performance, low temperature resistance and impact resistance are limited, which limits its use in certain fields. The development and application of some civil engineering fields

Epoxy resin toughening can change the structural composition of the cured three-dimensional cross-linked system through chemical methods, endowing the three-dimensional cross-linked network with mobility, but the price of this special flexible epoxy resin material is more than three times the price of general epoxy resin. Increased application cost

At the same time, physical methods such as rubber elastomers, rigid inorganic fillers or thermoplastic polymers can also be added to improve the toughness of the cured product, but they are often not well integrated into the three-dimensional structure of the epoxy cured product. Toughening, can not give full play to the toughening effect; In addition, in construction applications, some epoxy resins and curing agents have high viscosity, which is not conducive to construction. Often add inactive diluent to reduce the viscosity of the mixture, so that it can reach the ideal viscosity and have better construction effect, and the use of non-reactive diluents cannot participate in the curing reaction, resulting in poor stability of the solid product, and the volatilization of organic solvents will cause harm to the environment and construction personnel

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