Underwater epoxy adhesive and preparation method thereof

An epoxy adhesive and epoxy technology, applied in the direction of epoxy resin glue, adhesives, adhesive additives, etc., can solve the problems of poor work performance, low bonding strength, poor water resistance, etc., achieve fast curing speed, Good brushing performance and high bonding strength

Inactive Publication Date: 2010-01-06
QINGDAO PACIFIC OCEANEERING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently there are few epoxy resin adhesives that can be used underwater, and there are disadvantages such as poor work performance, low bonding strength, and poor water resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare component A of the underwater epoxy adhesive according to the following weight percentages:

[0023] Epoxy resin E-51 19.0%

[0024] Epoxy E-44 19.0%

[0025] Ethylene glycol diglycidyl ether 7.0%

[0026] Toughener 304 resin 3.7%

[0027] Talc 13.8%

[0028] Activated Calcium Oxide 8.0%

[0029] Organic bentonite 1.6%

[0030] Titanium dioxide 3.0%

[0031] γ-Glycidylpropyltrimethoxysilane 0.8%

[0032] Deqian 923S 0.5%

[0033] Deqian 6800 0.5%

[0034] Prepare component B of the underwater epoxy adhesive according to the following weight percentages:

[0035] 1085 curing agent 14.0%

[0036] 810 curing agent 7.0%

[0037] Curing Accelerator DMP-30 2.1%

[0038] Dissolve 190g of epoxy resin E-51, 190g of epoxy resin E-44, 70g of ethylene glycol diglycidyl ether, 8g of γ-glycidylpropyl trimethoxysilane, 5g of Deqian 923S, 37g of 304 resin, and 5g The foaming agent Deqian 6800 is poured into the stirring and dispersing kettle in turn, stirring, pour...

Embodiment 2

[0040] Prepare component A of the underwater epoxy adhesive according to the following weight percentages:

[0041] Epoxy resin E-51 23.0%

[0042] Epoxy E-44 15.0%

[0043] Ethylene glycol diglycidyl ether 6.0%

[0044] Toughener 304 resin 4.0%

[0045] Talc 18.0%

[0046] Activated Calcium Oxide 6.0%

[0047] Organic bentonite 1.8%

[0048]Titanium dioxide 4.0%

[0049] γ-Glycidylpropyltrimethoxysilane 0.7%

[0050] Deqian 923S 0.8%

[0051] Deqian 6800 0.7%

[0052] Prepare component B of the underwater epoxy adhesive according to the following weight percentages:

[0053] 1085 curing agent 12.0%

[0054] 810 curing agent 6.2%

[0055] Curing Accelerator DMP-30 1.8%

[0056] Dissolve 230g of epoxy resin E-51, 150g of epoxy resin E-44, 60g of ethylene glycol diglycidyl ether, 7g of γ-glycidyl propyl trimethoxysilane, 8g of Deqian 923S, 40g of 304 resin, and 7g The foaming agent Deqian 6800 is poured into the stirring and dispersing kettle in turn, stirring, pour...

Embodiment 3

[0058] Prepare component A of the underwater epoxy adhesive according to the following weight percentages:

[0059] Epoxy E-51 19.5%

[0060] Epoxy E-44 18.5%

[0061] Ethylene glycol diglycidyl ether 6.5%

[0062] Toughener 304 resin 3.8%

[0063] Talc 15.0%

[0064] Calcium Oxide 9.0%

[0065] Organic bentonite 1.5%

[0066] Titanium dioxide 3.0%

[0067] γ-Glycidylpropyltrimethoxysilane 0.8%

[0068] Deqian 923S 0.5%

[0069] Deqian 6800 0.5%

[0070] Prepare component B of the underwater epoxy adhesive according to the following weight percentages:

[0071] 1085 curing agent 13.0%

[0072] 810 curing agent 6.5%

[0073] Curing Accelerator DMP-30 1.9%

[0074] Dissolve 195g of epoxy resin E-51, 185g of epoxy resin E-44, 65g of ethylene glycol diglycidyl ether, 8g of γ-glycidyl propyl trimethoxysilane, 5g of Deqian 923S, 38g of 304 resin, and 5g of The foaming agent Deqian 6800 is poured into the mixing and dispersing kettle in turn, stirring, pouring in 15g of ...

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Abstract

The invention relates to an underwater epoxy adhesive and a preparation method thereof; the adhesive contains A component and B component and comprises the following components by weight percent: 15-23% of epoxy resin E-51, 15-23% of epoxy resin E-44, 6-8% of epoxy active diluent, 2-5% of flexibilizer 304 resin, 13-20% of talcum powder, 6-9% of calcium oxide, 1.5-2.0% of organic bentonite, 2-4% of titanium dioxide, 0.5-1.0% of coupling agent, 0.3-1.0% of dispersant, 0.3-1.0% of defoaming agent, 10-15% of 1085 curing agent, 5-10% of 810 curing agent and 1.5-2.2% of curing accelerator; wherein, B component comprises 1085 curing agent, 810 curing agent and curing accelerator and the remainder is A component. The preparation method comprises the following steps: separately stirring the A component and the B component to disperse evenly, adding the B component in the A component to mix evenly and obtaining the underwater epoxy adhesive. The preparation method is simple, the product brushability is good, the curing rate is fast, the bonding strength is high, and the adhesive is resistant to water and the corrosion of acid and base and can not pollute the environment. The adhesive can be widely used to bond various building materials in the water and mending the concrete crack.

Description

Technical field: [0001] The invention relates to an epoxy adhesive and a preparation method thereof, in particular to an epoxy adhesive which can be used underwater and a preparation method thereof. Background technique: [0002] With the development of society and economy, in the field of hydraulic construction engineering, it is required to bond various building materials in water. When repairing cracks in reservoir dams, it is required to use adhesives to bond various repair materials in water. Also in other fields, such as ships, medical treatment, aquaculture, etc., there is also a need to use adhesives in water environments. However, currently there are few epoxy resin adhesives that can be used underwater, and there are disadvantages such as poor workability, low bonding strength, and poor water resistance. Invention content: [0003] The purpose of the present invention is to overcome the defects of the prior art, aiming at the characteristics of poor working perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J11/06
Inventor 陈吉素褚志旺王国鹏
Owner QINGDAO PACIFIC OCEANEERING CO LTD
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