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Epoxy resin adhesive for concrete wet surfaces

A technology of epoxy resin glue and concrete, which is applied in the direction of epoxy resin glue, adhesives, adhesive additives, etc., can solve the problems that the brittleness of materials has not been improved, it is not easy to produce in large quantities, and the price is expensive, etc. Excellent junction performance and excellent water repellency

Active Publication Date: 2020-03-27
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adhesive prepared by adding this nitrile rubber has improved the bonding performance, the brittleness of the material itself has not been improved, and the domestic production of this liquid nitrile rubber is relatively small, the price is relatively expensive, and it is not easy to produce in large quantities

Method used

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  • Epoxy resin adhesive for concrete wet surfaces
  • Epoxy resin adhesive for concrete wet surfaces

Examples

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Effect test

Embodiment 1

[0018] A kind of epoxy resin adhesive for wet concrete surface and preparation method thereof, its preparation method is as follows:

[0019] 1) Take 5 parts of palygorskite that has been wet-milled, centrifuged, ultrasonically dispersed, and dried, 15 parts of glass powder that has been dry-milled and wet-milled, and 100 parts of bisphenol A epoxy resin (E-51 ) are mixed and then fully stirred to obtain component A.

[0020] 2) Mix 116 parts of 1,6-hexamethylenediamine and 298 parts of cardanol, stir and heat to 35°C for 0.5h in turn, then raise the temperature to 70°C and slowly add 60 parts of formaldehyde solution with a mass fraction of 37% to 40%. After the dropwise addition of the formaldehyde solution is completed, raise the temperature to 90°C for 2 hours to fully react, vacuum filter to obtain the phenalkamine mixture, weigh 45 parts of the phenalkamine mixture, mix 10 parts of n-propylamine, 4 parts of white carbon black and the phenalkamine mixture , and stir even...

Embodiment 2

[0023] A kind of epoxy resin adhesive for wet concrete surface and preparation method thereof, its preparation method is as follows:

[0024] 1) Take 6.5 parts of palygorskite that has been wet-milled, centrifuged, ultrasonically dispersed, and dried, 17 parts of glass powder that has been dry-milled and wet-milled, and 100 parts of bisphenol A epoxy resin (E-51 ) are mixed and then fully stirred to obtain component A.

[0025] 2) Mix 130 parts of 1,6-hexamethylenediamine and 330 parts of cardanol, stir and heat in turn to 37°C for 0.7h, then slowly add 70 parts of formaldehyde solution with a mass fraction of 37% to 40% after heating up to 75°C. After the dropwise addition of the formaldehyde solution was completed, the temperature was raised to 95°C for 3 hours to fully react, and vacuum filtration was performed to obtain a phenalkamine mixture. Weighed 47 parts of the phenalkamine mixture, mixed 16 parts of n-propylamine, 5 parts of white carbon black and the phenalkamine m...

Embodiment 3

[0028] A kind of epoxy resin adhesive for wet concrete surface and preparation method thereof, its preparation method is as follows:

[0029] 1) Take 8 parts of palygorskite that has been wet-milled, centrifuged, ultrasonically dispersed, and dried, 20 parts of glass powder that has been dry-milled and wet-milled, and 100 parts of bisphenol A epoxy resin (E-51 ) are mixed and then fully stirred to obtain component A.

[0030] 2) Mix 141 parts of 1,6-hexamethylenediamine and 360 parts of cardanol, stir and heat to 40°C for 1 hour, then slowly add 75 parts of formaldehyde solution with a mass fraction of 37% to 40% when the temperature is raised to 80°C. After the dropwise addition of the solution, raise the temperature to 100°C for 4 hours to fully react, vacuum filter to obtain a mixture of phenalkamines, weigh 50 parts of the mixture of phenalkamines, mix 20 parts of n-propylamine, 6 parts of white carbon black and the mixture of phenalkamines at room temperature Stir evenly...

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Abstract

The invention relates to an epoxy resin adhesive for concrete wet surfaces, and solves the problems that an existing epoxy resin adhesive is high in cost, high in brittleness and low in toughness, andvarious properties need to be further improved. The epoxy resin adhesive is prepared by mixing a component A and a component B in a ratio of (2-4):1, wherein the component A comprises the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 5-10 parts of palygorskite powder and 15-25 parts of waste glass powder; the component B comprises the following components in parts by weight: 45-65 parts of a modified amine curing agent, 10-20 parts of monoamine and 4-6 parts of a thixotropic agent. The epoxy resin adhesive is simple in raw material, low in cost, good in flexibility, excellent in hydrophobicity, low in permeability, low in toxicity, excellent in self-drying property and excellent in adhesive property, and is particularly suitable for the concrete wet surfaces.

Description

technical field [0001] The invention relates to the field of adhesive preparation, in particular to an epoxy resin adhesive for wet concrete surfaces. Background technique [0002] Epoxy resin is a general term for a polymer compound containing at least two epoxy groups. Due to the relatively active chemical activity of the epoxy group, it can react with various organic compounds and inorganic compounds. At the same time, epoxy resin is A common thermosetting polymer material, depending on the type of curing agent used, the mechanical properties, adhesiveness, and electrical conductivity of the cured product are different, so it can be widely used in adhesives, coatings, insulation materials, composite materials, etc. [0003] Common curing agents are divided into two categories: heating curing agents and room temperature curing agents. Heating-curing epoxy resins cure quickly, but because heating consumes a lot of resources in the actual application process, adhesives for ...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/04C08G59/50C08G59/56C08G59/62
CPCC09J163/00C09J11/04C08G59/623C08G59/56C08G59/5006C08K7/10C08K3/40
Inventor 陈威郑襄南项志鼎贺行洋苏英秦义良甄博文张路川曾景义方娇林江波
Owner HUBEI UNIV OF TECH
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