A kind of hydrophilic two-component grouting plugging material

A 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 stability of curing time, poor stability of consolidated body, and adjustable Small range and other problems, to achieve high water plugging performance, fast gel speed, and improve water plugging efficiency

Active Publication Date: 2017-07-25
广西苏博特新材料科技有限公司
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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 silica gel with strong cohesiveness, which is connected with soil particles to form a whole. Stratum and other structures play the role of anti-seepage and reinforcement. Water glass slurry is a solution-type slurry material with low initial viscosity and good injectability. The source of slurry material is wide, the cost is low, and the side effects on the environment are relatively low. It is small and basically does not pollute the environment. Due to its superior comprehensive performance, it is still one of the most widely used chemical grouting materials, but it also has its shortcomings. The specific performance is that the curing time is not stable enough and the adjustable range is small. The stability of the structure is poor, so this type of slurry is generally only used in semi-permanent or temporary projects

Method used

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  • A kind of hydrophilic two-component grouting plugging material
  • A kind of hydrophilic two-component grouting plugging material
  • A kind of hydrophilic two-component grouting plugging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Weigh 95g of highly hydrophilic polyether polyol (functionality 3, molecular weight 6000, EO / PO=75:25), 5g of polyvinyl alcohol 2000, and 10g of DBP into the reaction kettle together, at a vacuum degree of -0.08MPa , vacuum dehydration at 115°C for 2 hours; after cooling down to 60°C, add 20g of toluene diisocyanate into the reaction kettle under nitrogen atmosphere, and react for 3h; Finally, add 60 g of propylene carbonate and 0.02 g of benzenesulfonyl chloride into the reaction kettle under a nitrogen atmosphere, stir for 20 minutes, and discharge to obtain Component A.

[0039] (2) Dissolve 0.5g of stannous octoate and 5g of diethylenetriamine in 100g 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 B at a volume ratio of 1:5 to prepare a hydrophilic polyurethane / water glass composite hydrogel sample.

[0041] Table 1 Main technical ...

Embodiment 2

[0046] (1) Weigh 80g of highly hydrophilic polyether polyol (functionality 3, molecular weight 8200, EO / PO=80:20), 20g of PTMEG1000, 50g of DOP and add them into the reaction kettle together, at a vacuum of -0.08MPa, 115℃ Under the condition of vacuum dehydration for 2h; after cooling down to 60°C, add 9g of toluene diisocyanate to the reactor under nitrogen atmosphere, and react for 3h; maintain 60°C, add 31g of liquefied diphenylmethane diisocyanate into the reactor under nitrogen atmosphere , continue to react for 1h; add 0.3g of dibutyltin dilaurate to the reactor to continue to react for 1h, after cooling down to 50°C, add 20g of mixed dibasic acid ester and 0.05g of anhydrous phosphoric acid into the reactor under nitrogen atmosphere, stir Discharge after 10~30min, and get component A.

[0047] (2) Dissolve 2g of triethylamine and 2g of triethanolamine in 100g of water glass solution (the mass fraction of sodium silicate is 30%, and the modulus of sodium silicate is 3.5)...

Embodiment 3

[0054] (1) Weigh 90g of highly hydrophilic polyether polyol (functionality 3, molecular weight 10000, EO / PO=95:5), 10g of polyvinyl alcohol 200, and 30g of DOP into the reaction kettle together. MPa, vacuum dehydration at 115°C for 2h; after cooling down to 60°C, add 27.6g of toluene diisocyanate to the reactor under nitrogen atmosphere, and react for 3h; keep at 60°C, add 33.4g more Phenyl polymethylene polyisocyanate, continue to react for 1h; add 0.23g 2,2-bismorpholinyl diethyl ether to the reaction kettle and continue to react for 1h, after cooling down to 50°C, put it into the reaction kettle under nitrogen atmosphere Add 40g of 1,2-propanediol carbonate and 0.03g of tartaric acid, stir for 10-30min, and discharge to obtain component A.

[0055] (2) Dissolve 1g of N,N-dimethylbenzylamine and 4g of m-phenylenediamine in 100g of water glass solution (the mass fraction of sodium silicate is 60%, and the modulus of sodium silicate is 1.5) to obtain the composition Point B. ...

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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 invention relates to the field of grouting and waterproof plugging, in particular to a high-performance hydrophilic polyurethane / water glass two-component grouting plugging material and a preparation method thereof. Background technique [0002] The molecular chain structure of the hydrophilic polyurethane grouting material has good hydrophilicity. After encountering water, it will first emulsify and disperse, and then undergo chain extension, branching and cross-linking reactions with water, and absorb and cover its own mass several times or even In the process of reaction, water is both a diluent and a curing agent, and it has good adaptability to water quality. In fresh water, seawater, and weakly acidic water , Weak alkaline water can be cured, great potential for development. However, the traditional hydrophilic polyurethane grouting materials also have many shortcomings, mainly in that the gel body swollen by water absorption will also lose ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 广西苏博特新材料科技有限公司
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