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Grouting material for house restoration

A technology for grouting materials and houses, which is applied in the field of building materials, and can solve the problems of long time for the wall to absorb grout, fast foaming speed, and hindering the spread of grout

Inactive Publication Date: 2015-07-22
SICHUAN YAHAO REAL ESTATE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main grouting material is mainly composed of silicone and polyurethane prepolymer, but the grouting material is concentrated after being injected into the wall, and it takes a long time for the wall to absorb the grout, and the polyurethane prepolymer foams when it meets water The speed is fast, the further diffusion of the slurry is hindered after foaming, and it is not easy to form an effective waterproof barrier in the wall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Grouting material A1, including 40 parts by weight of silicone and modified polyurethane prepolymer prepared by the following method:

[0028] Dehydrate 25 parts by weight of polyethylene adipate diol and 3 parts by weight of uronic acid at 80-85°C and 0.08-0.10MPa vacuum for 1.5-2.0h; adjust the reaction temperature to 65-80°C, Add 32 parts by weight of dicyclohexylmethane diisocyanate (HMDI) and 0.03 parts by weight of catalyst triethylamine, and react for 1.0-3.0 hours; cool down to 25-30°C, add 2 parts by weight of chain extender ethylene glycol and 0.05 parts by weight of handover Joint agent diethylenetriamine.

Embodiment 2

[0030] Grouting material A2, comprising 25 parts by weight of silicone and the modified polyurethane prepolymer prepared by the following method:

[0031] Dehydrate 30 parts by weight of polyadipate-1,4-butylene glycol ester diol and 10 parts by weight of uronic acid at 80-85°C and 0.08-0.10MPa vacuum for 1.5-2.0h; adjust the reaction temperature to 65-80°C, add 35 parts by weight of toluene diisocyanate (TDI) and 0.15 parts by weight of catalyst stannous octoate, react for 1.0-3.0h; cool down to 25-30°C, add 3.5 parts by weight of chain extender 1,4-butyl Diol and 1.2 parts by weight of crosslinking agent tetraethylenepentamine.

Embodiment 3

[0033] Grouting material A3, comprising 30 parts by weight of silicone and the modified polyurethane prepolymer prepared by the following method:

[0034] Dehydrate 26 parts by weight of polyadipate-1,4-butylene glycol ester diol and 7 parts by weight of uronic acid at 80-85°C and 0.08-0.10MPa vacuum for 1.5-2.0h; adjust the reaction temperature to 65-80°C, add 33 parts by weight of toluene diisocyanate (TDI) and 0.07 parts by weight of catalyst stannous octoate, react for 1.0-3.0h; cool down to 25-30°C, add 2.7 parts by weight of chain extender 1,4-butyl diol and 0.08 parts by weight of a crosslinking agent tetraethylenepentamine.

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PUM

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Abstract

The invention discloses a grouting material for house restoration. The grouting material comprises the following components in parts by weight: 60-75 parts by weight of modified polyurethane prepolymer and 25-40 parts by weight of organic silicon, wherein the modified polyurethane prepolymer is a polyurethane prepolymer subjected to uronic acid modification. With the adoption of the uronic acid-modified polyurethane prepolymer, hydroxyl contained in an uronic acid structure can react with an isocyanate monomer, so that uronic acid is introduced into a polyurethane prepolymer system under a certain reaction conditions to realize the modification of the polyurethane prepolymer. After being injected into a wall body, the grouting material formed by blending the modified polyurethane prepolymer and the organic silicon is quickly diffused through capillary pores in the wall body, and foamed and filled by the polyurethane prepolymer which quickly permeates into the wall body; in cooperation with the hydrophobic effect of the organic silicon, an effective protective barrier is formed.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a grouting material for house repair. Background technique [0002] After long-term use of the built house, the moisture-proof layer of the foundation is damaged, causing the underground water vapor to move upward through the capillary pores of the wall, and the plaster layer is mildewed, peeled, and peeled off. Surface efflorescence, weathering and other phenomena. The grouting material can be injected into the wall, and the purpose of filling, reinforcement or water blocking can be achieved after the grout condenses and hardens. At present, the main grouting material is mainly composed of silicone and polyurethane prepolymer, but the grouting material is concentrated after being injected into the wall, and it takes a long time for the wall to absorb the grout, and the polyurethane prepolymer foams when it meets water The speed is fast, and the further diffusion o...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/34C08G18/32C08K5/54
Inventor 贺昶明
Owner SICHUAN YAHAO REAL ESTATE DEV
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