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
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[0064] Example 1
[0065] The preparation method of epoxy resin adhesive suitable for wet and underwater environments includes 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 them evenly, then add 20 parts by weight of barium sulfate and 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 mix them evenly and then discharge the material;
[0070] (3) Before use, component A and component B are mixed at a weight rat...
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[0071] Example 2
[0072] The preparation method of epoxy resin adhesive suitable for wet and underwater environments includes the following steps:
[0073] (1) Preparation method of component A:
[0074] Mix 100 parts by weight of bisphenol-A 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 them 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, and finally add 1 part by weight of fumed silica in batches and stir evenly;
[0075] (2) Preparation method of component B:
[0076] Mix 40 parts by weight of 810 curing agent, 3 parts by weight of catechol-modified hexamethylene diamine, 6 parts by weight of dimethylaniline, and 3 parts by weight of ND-42 and mix them evenly before discharging;
[0077] (3) Before use, component A and component B are mixed accordi...
Example Embodiment
[0078] Example 3
[0079] The preparation method of epoxy resin adhesive suitable for wet and underwater environments includes the following steps:
[0080] (1) Preparation method of component A:
[0081] Mix 100 parts by weight of bisphenol A 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 them evenly, then add 10 parts by weight of calcium carbonate and 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, and 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 diethylene triamine, 3 parts by weight of DMP30 and 4 parts by weight of KH570 and mix them evenly and then discharge the material;
[0084] (3) Before use, component A and componen...
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