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Epoxy modified polyurethane double-component grouting material for road engineering maintenance and preparation method thereof

A technology of epoxy modification and grouting material, applied in the field of epoxy modified polyurethane two-component grouting material and its preparation, can solve problems such as reducing the use of amine catalysts, achieve good compatibility, avoid hysteresis, Mild and efficient reaction conditions

Inactive Publication Date: 2012-10-03
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to change the adding method of epoxy resin in view of the drawbacks of the prior art, so that the pot life of the polyurethane black and white material is not affected, the grouting gun head and the machine will no longer be blocked, and at the same time it can reduce the and avoid the use of amine catalysts

Method used

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  • Epoxy modified polyurethane double-component grouting material for road engineering maintenance and preparation method thereof
  • Epoxy modified polyurethane double-component grouting material for road engineering maintenance and preparation method thereof
  • Epoxy modified polyurethane double-component grouting material for road engineering maintenance and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]

[0032] The preparation method comprises the following steps:

[0033] Using diethanolamine and epoxy resin CYD-128 as raw materials, the molar ratio of diethanolamine:epoxy resin CYD-128 is 2:1, using methyl ethyl ketone as solvent, the reaction temperature is 80°C, and the reaction time is 4 hours. Epoxy resin CYD128-DEA adduct solution; distill the reaction product to remove the solvent under reduced pressure; add polyether YC-4110, foaming agent water, foam stabilizer SD-601 and catalyst dibutyltin dilaurate, stir and mix evenly After natural cooling to room temperature, the A component of the grouting material can be obtained; polyphenyl polymethylene polyisocyanate (PAPI) is used as the B component; the A and B components are mixed and stirred evenly, and the epoxy resin can be obtained. Modified polyurethane grouting material.

[0034] The volume began to expand after 30s, and the gel solidified after 90s; the mechanical properties test results showed that t...

Embodiment 2

[0037]

[0038] The preparation method comprises the following steps:

[0039] Using diethanolamine and epoxy resin CYD-128 as raw materials, the molar ratio of diethanolamine:epoxy resin CYD-128 is 1:1, using methyl ethyl ketone as solvent, the reaction temperature is 80°C, and the reaction time is 4 hours. The solution of the epoxy resin CYD128-DEA adduct; the reaction product is distilled off under reduced pressure to remove the solvent; add a certain amount of polyether YC-4110, foaming agent water, foam stabilizer SD-601 and catalyst dibutyltin dilaurate, After stirring and mixing evenly, cool naturally to room temperature to get component A of the grouting material; polyphenyl polymethylene polyisocyanate (PAPI) is used as component B; components A and B are mixed and stirred evenly according to the above ratio, The epoxy-modified polyurethane grouting material can be obtained.

[0040] The volume began to expand after 40s, and the gel solidified after 100s; the mechan...

Embodiment 3

[0043]

[0044] The preparation method comprises the following steps:

[0045] Using diethanolamine and epoxy resin CYD-128 as raw materials, the molar ratio of diethanolamine:epoxy resin CYD-128 is 1.5:1, using methyl ethyl ketone as solvent, the reaction temperature is 80°C, and the reaction time is 3 hours. The solution of the epoxy resin CYD128-DEA adduct; the reaction product is distilled off under reduced pressure to remove the solvent; add a certain amount of polyether YC-4110, foaming agent water, foam stabilizer SD-601 and catalyst dibutyltin dilaurate, After stirring and mixing evenly, cool naturally to room temperature to get component A of the grouting material; polyphenyl polymethylene polyisocyanate (PAPI) is used as component B; components A and B are mixed and stirred evenly according to the above ratio, The epoxy-modified polyurethane grouting material can be obtained.

[0046] The volume began to expand after 50s, and the gel solidified after 120s; the me...

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Abstract

The invention relates to an epoxy modified polyurethane double-component grouting material for road engineering maintenance and a preparation method thereof, wherein the grouting material comprises a component A and a component B; the component A comprises following components in part by weight: 700-800 parts of polyether glycol, 100-300 parts of epoxy resin addition product, 20-40 parts of foaming agent, 40-80 parts of foam stabilizer and 10-40 parts of catalyst; and the component B is polyphenyl polymethylene polyisocyanate. The preparation method comprises the step of mixing and stirring the component A and the component B according to the mass ratio of (0.8-1.5): 1 uniformly. The grouting material has the advantages that: when the material participates in foaming reaction and is cured, the compression strength and bonding force of the formed liquid cement are improved, and the maximum tensile shear strength can reach 4.3Mpa, so that the grouting material is better than the grounding material mixed by polyurethane and epoxy resin; and the grouting material reduces builder body damage and has a certain economic benefit.

Description

technical field [0001] The invention relates to an epoxy-modified polyurethane two-component grouting material for road engineering maintenance and maintenance and a preparation method thereof. Background technique [0002] With the rapid increase of highway traffic flow, the increase of vehicle load and the increase of service life, road surface diseases are becoming more and more obvious, especially the road surface pumping disease is particularly serious. Under the frequent action of heavy wheel loads, the base layer is out of contact with the surface layer due to the accumulation of plastic deformation, and the water seeps down along the joints and accumulates in the empty gaps. The wetted fine material is mixed into a slurry, which is splashed out along the joints, which is called "slurry". Moisture and pavement loading are the main causes of pumping disease. The generation of pavement disease not only affects the comfort and safety of driving, but also the expansion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/58C08G18/48C08G59/50C08G101/00
Inventor 张良均刘洋
Owner WUHAN INSTITUTE OF TECHNOLOGY
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