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Polyurethane grouting leak-stopping material

A polyurethane and anti-leakage technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of easy dilution and washing away, poor elasticity, low viscosity, etc., to achieve enhanced plugging and waterproof effects, and high bonding strength , the effect of increasing the diffusion range

Inactive Publication Date: 2012-04-18
DMAR BUILDING MATERIALS TAIYUAN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic cements are likely to cause drying shrinkage cracks again, while the existing chemical grouting materials have poor elasticity and low viscosity, and are easily diluted and washed away when exposed to water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A polyurethane grouting anti-leakage material, comprising the following components in parts by weight:

[0029] Molecular weight 1000-2000 polyether diol 20

[0030] Molecular weight 400-600 polyether diol 18

[0031] TDI 30

[0032] Dibutyl phthalate 2

[0033] Acetone 10

[0034] Organotin catalysts 3.

Embodiment 2

[0036] A polyurethane grouting anti-leakage material, comprising the following components in parts by weight:

[0037] Molecular weight 1000-2000 polyether diol 20

[0038] Molecular weight 4000-6000 polyether triol 25

[0039] MDI 15

[0040] Dioctyl phthalate 3

[0041] Acetone 7

[0042] Ethyl acetate 6

[0043] Tertiary amine catalysts 4.

Embodiment 3

[0045] A polyurethane grouting anti-leakage material, comprising the following components in parts by weight:

[0046] Molecular weight 1000-2000 polyether diol 10

[0047] Molecular weight 4000-6000 polyether triol 25

[0048] Molecular weight 400-600 polyether diol 15

[0049] MDI 20

[0050] TDI 25

[0051] Dioctyl phthalate 5

[0052] Xylene 10

[0053] Ethyl acetate 10

[0054] Stabilizer 6.

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PUM

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Abstract

The invention discloses a polyurethane grouting leak-stopping material, relating to grouting leak-stopping waterproof materials for building engineering. The polyurethane grouting leak-stopping material comprises the following ingredients: 35-50 weight portions of high-molecular binary or trihydric alcohol, 15-45 weight portions of isocyanate, 2-5 weight portions of dibutyl phthalate, 10-20 weight portions of acetone, and 3-6 weight portions of other auxiliary agents. The polyurethane grouting leak-stopping material is a waterproof consolidating material which has strong waterproof leak stopping capability and high consolidating intensity, has the advantages of good hydrophobic performance, high chemical stability, large penetration radius and solidification volume ratio, high intensity, good toughness, and adjustable viscosity and solidification time, is suitable for grouting various cracks, and has no corrosion to steel bars, good cohesiveness with various base materials, and strong impermeability.

Description

technical field [0001] The invention relates to a grouting leak-stopping waterproof material for construction engineering, in particular to a polyurethane grouting leak-stopping material. Background technique [0002] In construction projects, all buildings have waterproof and anti-seepage requirements, such as reservoir dams, tunnels, airport runways, high-grade highways, high-speed railway subgrades, underground parking lots, culverts, swimming pools, sewage treatment pools, building exterior walls Wait. And along with the use of building, due to the influence of internal or external condition change, internal crack or crack will appear in the building, and the building will leak, which will affect the normal use and service life of the building. [0003] At present, the treatment of cracks is mainly repaired by grouting materials. The grouting materials are mainly divided into two categories: inorganic cement and chemical grouting materials. Inorganic cements are likely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08G18/48C08K5/12C09K3/12C08G101/00
Inventor 于学贞岳贝贝王新社王奚焯王育锋
Owner DMAR BUILDING MATERIALS TAIYUAN ENG
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