Hydrophilic double-component grouting plugging material

A leakage plugging material and two-component technology, applied in the field of high-performance hydrophilic polyurethane/water glass two-component grouting plugging material and its preparation, can solve the problem of insufficient curing time, poor stability of consolidated body, and adjustable The problem of small range, etc., to achieve the effect of efficient water blocking and water blocking performance, fast gel speed, and improving water blocking efficiency.

Active Publication Date: 2015-04-29
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Water glass is the earliest material used in chemical grouting. Water glass slurry will react after being mixed with a certain gelling agent to form a strong viscous material. Consolidative silica gel, which is connected with soil particles to form a whole, thus plays a role of anti-seepage and reinforcement for stratum and other structures. Water glass slurry is a solution-type slurry material with low initial viscosity and good injectability. It has a wide range of sources, low cost

Method used

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  • Hydrophilic double-component grouting plugging material
  • Hydrophilic double-component grouting plugging material
  • Hydrophilic double-component grouting plugging material

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0037] Example 1

[0038] (1) Weigh 95g high hydrophilic polyether polyol (functionality 3, molecular weight 6000, EO / PO=75:25), 5g polyvinyl alcohol 2000, and 10g DBP together into the reaction kettle, under vacuum degree -0.08MPa , vacuum dehydration at 115 °C for 2 h; after cooling to 60 °C, add 20 g of toluene diisocyanate to the reaction kettle under nitrogen atmosphere, and react for 3 h; add 0.1 g of triethylamine to the reaction kettle and continue to react for 1 h, and cool down to 50 ° C Then, 60 g of propylene carbonate and 0.02 g of benzenesulfonyl chloride were added to the reaction kettle under a nitrogen atmosphere, and the mixture was stirred for 20 minutes and then discharged to obtain component A.

[0039] (2) Dissolve 0.5 g of stannous octoate and 5 g of diethylenetriamine in 100 g of water glass solution (the mass fraction of sodium silicate is 30%, and the modulus of sodium silicate is 3.5) to obtain component B.

[0040] (3) Mix component A and component...

Example Embodiment

[0045] Example 2

[0046] (1) Weigh 80g high hydrophilic polyether polyol (functionality 3, molecular weight 8200, EO / PO=80:20), 20g PTMEG1000, and 50g DOP, and add them to the reaction kettle together. Under the condition of ℃, vacuum dehydration for 2 hours; after cooling to 60 ℃, add 9 g of toluene diisocyanate to the reaction kettle under nitrogen atmosphere, and react for 3 hours; keep 60 ℃, add 31 g of liquefied diphenylmethane diphenyl to the reaction kettle under nitrogen atmosphere Isocyanate, continue to react for 1h; add 0.3g dibutyltin dilaurate to the reaction kettle and continue to react for 1h, after cooling to 50 ℃, add 20g mixed dibasic acid ester and 0.05g anhydrous phosphoric acid to the reaction kettle under nitrogen atmosphere, After stirring for 10~30min, the material is discharged to obtain component A.

[0047] (2) Dissolve 2g triethylamine and 2g triethanolamine in 100g water glass solution (the mass fraction of sodium silicate is 30%, and the modulus...

Example Embodiment

[0053] Example 3

[0054] (1) Weigh 90g high hydrophilic polyether polyol (functionality 3, molecular weight 10000, EO / PO=95:5), 10g polyvinyl alcohol 200, 30g DOP and add them to the reaction kettle together, under vacuum degree -0.08 MPa, vacuum dehydration at 115°C for 2h; after cooling to 60°C, add 27.6g of toluene diisocyanate to the reaction kettle under nitrogen atmosphere, and react for 3h; keep 60°C, add more than 33.4g to the reaction kettle under nitrogen atmosphere Phenyl polymethylene polyisocyanate, continue to react for 1h; add 0.23g of 2,2-bismorpholinyl diethyl ether to the reaction kettle and continue to react for 1h, after cooling to 50 ℃, add 0.23g to the reaction kettle under nitrogen atmosphere 40g of 1,2-propanediol carbonate and 0.03g of tartaric acid were added, and the mixture was stirred for 10-30min and then discharged to obtain component A.

[0055] (2) Dissolve 1 g of N,N-dimethylbenzylamine and 4 g of m-phenylenediamine in 100 g of water glass s...

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Abstract

The invention relates to a hydrophilic double-component grouting plugging material. The hydrophilic double-component grouting plugging material comprises a component A and a component B with a grouting volume ratio of 1: 1-5, wherein the component A comprises the following substances in parts by weight: 100 parts of polyether polyol, 10-50 parts of a plasticizer, 20-60 parts of isocyanate, 0.05-0.3 part of a catalyst, 20-60 parts of a solvent and 0.01-0.05 part of a retarder; the component B comprises the following substances in parts by weight: 100 parts of sodium silicate, 2-5 parts of a cross-linking agent and 0.5-2 parts of a catalyst. The plugging material related to the invention also has the characteristics of environment protection, no pollution, low cost and high dynamic strength besides the properties of great grouting capability, high gelatinizing speed, large water containing quantity and rapid and efficient seepage-proof plugging. The grouting plugging material is suitable for the grouting plugging of various buildings, such as ponds, water towers and basements, and the grouting plugging engineering of various ports, docks, bridge piers, dams and hydropower station curtains.

Description

Technical field [0001] The present invention involves the field of grouting and waterproofing, and especially involves a high -performance hydrophilic polyurethane / water glass dual composition grouting material and its preparation methods. Background technique [0002] The molecular chain of the hydrophilic polyurethane grouting material has good hydrophilicity in its own structure. After the water is encountered, it will be emulsified and dispersed.In dozens of times of water, a gel -shaped solid with a certain intensity is finally formed. During the reaction process, the water is both a diluent and a curing agent.Both weak alkaline water can be solidified and have great development potential.However, there are many shortcomings in the traditional hydrophilic polyurethane grouting materials, which are mainly manifested in the suction and swelling gels.It is very likely to cause the project to "repeat" the project; in addition, due to the traditional hydrophilic polyurethane grou...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K3/34C08G18/79C08G18/76C08G18/48
Inventor 刘玉亭孙德文冉千平杨冲万赟李波尹浩
Owner JIANGSU SOBUTE NEW MATERIALS
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