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Epoxy resin adhesive applicable to damp and underwater environments

A technology of epoxy resin and underwater environment, which is applied in the direction of epoxy resin glue, adhesive, carboxyl rubber adhesive, etc., and can solve the problems of undisclosed adhesive water resistance stability, poor adhesion between repair materials and wet interfaces, etc. , to achieve the effect of improving water resistance stability, increasing cross-linking density and increasing adhesion

Active Publication Date: 2017-10-27
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of a water molecule layer on the base surface to be repaired in an underwater humid environment, the adhesion between the repair material and the wet interface is often poor, which cannot meet the application requirements; in addition, the water resistance and stability of the adhesive can improve the durability of the repaired structure. also crucial
[0004] Chinese patent publication CN101619201A discloses a kind of underwater epoxy adhesive, its underwater steel-steel bonding tensile shear strength reaches 19.5MPa, and the tensile bonding strength with concrete reaches 2.89MPa, but it does not disclose the Adhesive water stability

Method used

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  • Epoxy resin adhesive applicable to damp and underwater environments

Examples

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Comparison scheme
Effect test

Embodiment 1

[0065] The preparation method of the epoxy resin adhesive that is applicable to wet and underwater environment, comprises the following steps:

[0066] (1) Preparation method of component A:

[0067] Mix 100 parts by weight of bisphenol A type epoxy resin E51, 5 parts by weight of butyl glycidyl ether and 1 part by weight of carboxyl liquid nitrile rubber and stir evenly, then add 20 parts by weight of barium sulfate, 30 parts by weight of 800 mesh quartz powder and 10 parts by weight of cement, continue to stir evenly to make the system into a paste, and finally add 0.5 parts by weight of fumed silica in batches, and stir evenly;

[0068] (2) Preparation method of component B:

[0069] Mix 40 parts by weight of JA-1S curing agent, 2 parts by weight of catechol-modified ethylenediamine, 3 parts by weight of DMP-30 and 2 parts by weight of KH550 and stir evenly before discharging;

[0070] (3) Before use, component A and component B are mixed in a weight ratio of 3:1 and stir...

Embodiment 2

[0072] The preparation method of the epoxy resin adhesive that is applicable to wet and underwater environment, comprises the following steps:

[0073] (1) Preparation method of component A:

[0074] Mix 100 parts by weight of bisphenol A type epoxy resin E44, 10 parts by weight of 1,4-butanediol diglycidyl ether and 5 parts by weight of liquid polysulfide rubber JLY-121 and stir evenly, then add 5 parts by weight of calcium carbonate , 40 parts by weight of 400 mesh quartz powder and 20 parts by weight of cement, continue to stir evenly to make the system into a paste, finally add 1 part by weight of fumed silica in batches, and stir evenly;

[0075] (2) Preparation method of component B:

[0076] 40 parts by weight of 810 curing agent, 3 parts by weight of catechol-modified hexamethylenediamine, 6 parts by weight of dimethylaniline and 3 parts by weight of ND-42 are mixed and stirred evenly before discharging;

[0077] (3) Before use, component A and component B were mixed...

Embodiment 3

[0079] The preparation method of the epoxy resin adhesive that is applicable to wet and underwater environment, comprises the following steps:

[0080] (1) Preparation method of component A:

[0081] Mix 100 parts by weight of bisphenol A type epoxy resin E51, 20 parts by weight of benzyl glycidyl ether and 10 parts by weight of hydroxyl-terminated liquid silicone rubber HS-110 and stir evenly, then add 10 parts by weight of calcium carbonate, 10 parts by weight of sulfuric acid Barium, 40 parts by weight of 800 mesh quartz powder, continue to stir evenly to make the system into a paste, finally add 3 parts by weight of bentonite in batches, and stir evenly;

[0082] (2) Preparation method of component B:

[0083] Mix 50 parts by weight of 1085A curing agent, 1 part by weight of catechol-modified diethylenetriamine, 3 parts by weight of DMP30 and 4 parts by weight of KH570, stir evenly, and then discharge;

[0084] (3) Before use, component A and component B are mixed in a w...

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Abstract

The invention discloses an epoxy resin adhesive applicable to damp and underwater environments. The epoxy resin adhesive consists of a component A and a component B, wherein the component A is prepared from the following ingredients in parts by weight: 100 parts of epoxy resin, 5-30 parts of reactive diluent, 1-10 parts of toughening agent, 0-10 parts of calcium carbonate, 0-20 parts of barium sulfate, 0-40 parts of quartz powder, 0-20 parts of cement and 0.5-3 parts of thixotropic agent; the component B is prepared from the following ingredients in parts by weight: 40-60 parts of amine curing agent, 1-3 parts of pyrocatechin modified amine, 1-10 parts of accelerant and 0-4 parts of couplant; and the weight ratio of the component A to the component B is (1 to 4): 1. The epoxy resin adhesive applicable to the damp and underwater environments, disclosed by the invention, can be applied to the bonding of various building materials and the patching of concrete cracks in damp or underwater environments and is high in underwater bonding strength and good in water resistance.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to an adhesive used for bonding building materials and repairing concrete cracks, in particular to an epoxy resin adhesive suitable for wet and underwater environments. Background technique [0002] With the rapid development of social economy, the construction of marine engineering and water conservancy projects such as ports, sea-crossing bridges, etc. is changing with each passing day. Marine engineering and hydraulic engineering structures are subject to water erosion or other external factors, causing the surface layer of concrete components to fall off and be damaged; Damages in docks, tunnels and concrete dams often require repair and reinforcement in wet or even underwater environments. In addition, bonding and repairing of concrete building defects in underground caverns such as subway tunnels and underground garages, bonding, repairing and plugging in wet environments such ...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J113/00C09J181/04C09J183/06C09J11/04C09J11/06C09J11/08
CPCC08K2201/014C08L2205/025C08L2205/03C08L2205/035C09J11/04C09J11/06C09J11/08C09J163/00C08L13/00C08K13/02C08K2003/3045C08K3/36C08K3/34C08K5/544C08L81/04C08K2003/265C08L83/06C08K3/346C08L63/00
Inventor 周进俊冉千平孙德文韩旭尹浩李波刘玉亭万赟刘娜
Owner JIANGSU SOBUTE NEW MATERIALS
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