Underwater solvent-free epoxy anchoring adhesive and preparation method thereof

Abstract

The invention provides an underwater solvent-free epoxy anchoring adhesive and a preparation method thereof. The underwater solvent-free epoxy anchoring adhesive consists of a component A and a component B in the weight percentage of 1:1, wherein the component A consists of the following components in parts by weight: 30-45 parts of epoxy resin E-44, 5-13 parts of epoxy resin E51, 3-8 parts of diluting agent, 0.5-0.75 part of coupling agent, 0.1-0.2 part of dispersant, 0.1-0.3 part of antifoaming agent, 0.4-3 parts of thixotropic agent, 20-30 parts of active micro silicon powder, 5-8 parts ofcalcium carbonate, 5.6-12 parts of quartz sand and 2-5 parts of aluminum oxide; the component B consists of the following components in parts by weight: 48-54 parts of completely-underwater epoxy curing agent 1085A, 44-50 parts of active micro silicon powder and 0.2-0.4 part of thixotropic agent; the diluting agent is benzyl alcohol; the coupling agent is ND-42 or KH 560; the dispersant is BYK P104S; the antifoaming agent is BYKA530; and the thixotropic agent is bentonite or white carbon black or a mixture of the bentonite and the white carbon black. The underwater solvent-free epoxy anchoring adhesive is prepared by mixing the prepared component A with the prepared component B in the weight ratio of 1:1.

Description

technical field [0001] The invention relates to a planting glue and a preparation method thereof, in particular to an underwater solvent-free epoxy planting glue and a preparation method thereof. Background technique [0002] Underwater solvent-free epoxy planting glue can be used with water under underwater or wet conditions, and is widely used in underwater or wet environments of construction projects such as dams, tunnels, water pipes, pools, aqueducts, and civil air defense. Bonding and defect repair, but when the commonly used epoxy planting glue in China is used in a humid or water environment, because the epoxy amine curing agent reacts with water and carbon dioxide in the water or air to form carbonate, resulting in sticking The junction layer is isolated by carbonates, resulting in an extreme decrease in pull-out strength, shear strength, and positive tensile bond strength. In the reinforcement of hydraulic structures such as dams, bridges, and tunnels with water or...

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Problems solved by technology

[0002] Underwater solvent-free epoxy planting glue can be used with water under underwater or wet conditions, and is widely used in underwater or wet environments of construction projects such as dams, tunnels, water pipes, pools, aqueducts, and civil air defense. Bonding and defect repair, but when the commonly used epoxy planting glue in China is used in a humid or water environment, because the epoxy amine curing agent reacts with water and carbon dioxide in the water or air to form carbonate, resulting in sticking The junction layer is isolated by carbonates, resulting in an extreme decrease in pull-out strength, shear strength, and positive tensile bond strength. In the reinforcement of hydraulic structures such as dams, bridges, and tunnels with water or underwater reinforcement, safety Reliability cannot be guaranteed

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