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Underwater epoxy structure adhesive and preparation method thereof

An adhesive and epoxy technology, applied in the direction of adhesives, epoxy glue, adhesive types, etc., can solve problems such as failure to meet standard requirements, structural bonding, poor reference, etc., to improve construction performance and bonding Strength, improvement of bonding strength, effect of high body strength

Active Publication Date: 2013-09-11
苏州市姑苏新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, some underwater bonding technologies and adhesives for underwater construction have been researched and developed at home and abroad, mainly composed of resins, water curing agents and fillers; among them, resins include epoxy resins, polyurethanes, etc.; water curing agents There are ketimine and modified amine; fillers include calcium oxide, calcium chloride, etc. The developed underwater adhesive has a high compressive strength, but the bonding performance is not good, and some indicators are molded in a dry environment. , the data measured by curing in a humid environment; this will inevitably affect the use effect of underwater adhesives in actual use environments
Moreover, since the surface of the adherend and its surroundings contain a lot of water in the underwater environment, the water film on the surface of the adherend affects the bonding strength of the epoxy adhesive, so the above-mentioned adhesives generally cannot be structurally bonded underwater.
[0004] Chinese invention patent application CN101020807A discloses a kind of epoxy resin underwater adhesive, which can be fully solidified underwater, and the mechanical properties of the underwater bonded concrete measured by it are close to the mechanical performance index of the C50 concrete strength grade, and the underwater bonding The strength of A3 steel is also relatively high, its tensile strength and shear strength can reach 5.3MPa and 13.3MPa respectively, but its measurement method is under normal conditions instead of underwater environment, so the reference of the measurement results is poor, and the above The test results also did not meet the standard requirements for steel glue in GB50367-2006 "Code for Design of Concrete Structure Reinforcement", so it cannot be used for underwater structural bonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An underwater epoxy structural adhesive, including component A and component B, the mixing ratio of component A and component B by weight is 1:1;

[0043] Described first component comprises by weight:

[0044] Bisphenol A epoxy resin 60.0%;

[0045] Polysulfide rubber PS-121 5.0%;

[0046] Kaolin 19.79%;

[0047] Quick-setting cement 8.11%;

[0048] Nano calcium carbonate 3.0%;

[0049] Calcium Sulfate Whiskers 4.0%;

[0050] Ethoxylated nonionic fluorocarbon surfactant 0.1%;

[0051] The B component comprises by weight:

[0052]Hydrophobic modified polyamide 13.84%;

[0053] Hydrophilic modified cycloaliphatic amine 31.47%;

[0054] 2,4,6-tris(dimethylaminomethyl)phenol 0.61%;

[0055] Coupling agent 1.29%;

[0056] Nano calcium carbonate 4.57%;

[0057] Quick-setting cement 12.22%;

[0058] 400 mesh silica powder 36.0%.

[0059] The preparation method of above-mentioned underwater epoxy structure adhesive is as follows:

[0060] Preparation of component...

Embodiment 2

[0066] An underwater epoxy structural adhesive, including component A and component B, the mixing ratio of component A and component B by weight is 1:1;

[0067] Described first component comprises by weight:

[0068] Bisphenol A epoxy resin 46.43%;

[0069] Polysulfide rubber PS-121 4.64%;

[0070] Kaolin 28.55%;

[0071] Quick-setting cement 14.47%;

[0072] Nano calcium carbonate 2.32%;

[0073] Calcium Sulfate Whiskers 3.49%;

[0074] Ethoxylated nonionic fluorocarbon surfactant 0.1%;

[0075] The B component comprises by weight:

[0076] Hydrophobic modified polyamide 31.00%;

[0077] Hydrophilic modified cycloaliphatic amine 18.47%;

[0078] 2,4,6-tris(dimethylaminomethyl)phenol 0.61%;

[0079] Coupling agent 2.29%;

[0080] Nano calcium carbonate 3.07%;

[0081] Quick-setting cement 18.4%;

[0082] 400 mesh silica powder 26.16%.

[0083] The preparation method of above-mentioned underwater epoxy structure adhesive is as follows:

[0084] Preparation of com...

Embodiment 3

[0090] An underwater epoxy structural adhesive, including component A and component B, the mixing ratio of component A and component B by weight is 1:1;

[0091] Described first component comprises by weight:

[0092] Bisphenol A epoxy resin 46.43%;

[0093] Polysulfide rubber PS-121 4.64%;

[0094] Kaolin 28.55%;

[0095] Quick-setting cement 14.47%;

[0096] Nano calcium carbonate 2.32%;

[0097] Calcium Sulfate Whiskers 3.36%;

[0098] Ethoxylated nonionic fluorocarbon surfactant 0.23%;

[0099] The B component comprises by weight:

[0100] Hydrophobic modified polyamide 31.47%;

[0101] Hydrophilic modified cycloaliphatic amine 13.18%;

[0102] 2,4,6-tris(dimethylaminomethyl)phenol 0.61%;

[0103] Coupling agent 3.0%;

[0104] Nano calcium carbonate 3.07%;

[0105] Quick-setting cement 18.4%;

[0106] 400 mesh silica powder 30.27%.

[0107] The preparation method of above-mentioned underwater epoxy structure adhesive is as follows:

[0108] Preparation of Com...

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Abstract

The invention discloses an underwater epoxy structure adhesive comprising a component A and a component B, wherein the component A comprises 43.0-60.0% of bisphenol A epoxy resin, 3.0-5.0% of flexibilizer, 13.0-30.0% of kaolin, 7.0-15.0% of fast-setting cement, 1.0-3.0% of thixotropic agent, 2.0-4.0% of calcium sulfate whisker and 0.1-0.5% of surfactant; and the component B comprises 10.0-40.0% of hydrophobic curing agent, 10.0-40.0% of hydrophilic curing agent, 0.5-1.0% of accelerator, 1.0-3.0% of coupling agent, 1.0-5.0% of thixotropic agent, 10.0-24.0% of fast-setting cement and 15.0-36.0% of packing. The underwater epoxy structure adhesive disclosed by the invention can be applied to structural bonding engineering in various damp environments and various underwater environments and has high underwater bonding strength the index of which meets the standard requirement of GB50367-2006.

Description

technical field [0001] The invention relates to an adhesive formula and a preparation method thereof, in particular to an underwater epoxy structural adhesive and a preparation method thereof, which are mainly used in structural bonding projects in underwater environments. Background technique [0002] With the rapid development of social economy, adhesives have been widely used in various fields of national economic construction, the scope of use is getting wider and wider, and the application conditions are getting wider and wider. Usually, in order to ensure the success of bonding, the surface of the adhered object is required to be clean, dry, and pollution-free. However, with the increasing number of various hydraulic construction projects, such as light rail tunnels, tunnels, etc. Next use the adhesive. [0003] In recent years, some underwater bonding technologies and adhesives for underwater construction have been researched and developed at home and abroad, mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/02C09J11/04
Inventor 陈晓龙朱华王惠明张晓华
Owner 苏州市姑苏新型建材有限公司
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