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A kind of environment-friendly polyurethane water blocking reinforcement material and preparation method thereof

A reinforcement material, polyurethane technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of increasing costs, hidden safety hazards, and high equipment requirements, and achieve good water-encapsulation, less human harm, and repeated water blocking effects.

Active Publication Date: 2016-05-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of its volatility and flammability, the requirements for storage and transportation equipment are relatively high, which increases the cost, and there are still hidden dangers in the use of coal mines.

Method used

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  • A kind of environment-friendly polyurethane water blocking reinforcement material and preparation method thereof
  • A kind of environment-friendly polyurethane water blocking reinforcement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add polymer polyol E to the reactor equipped with agitator 1 (Functionality is 3, hydroxyl value 27mgKOH / g) 100 parts, dehydrated under reduced pressure at 120°C for 2 hours, cooled to 30°C, then added 5 parts of toluene diisocyanate, reacted at 60°C for 4 hours, cooled to 25°C, Add 40 parts of polymethylene polyphenyl polyisocyanate and 30 parts of dimethyl methylphosphonate, stir evenly, and it is component A.

[0031] (2) Polymer polyol E 2 (Functionality is 3, hydroxyl value 450mgKOH / g) 30 parts, 3 parts of dibutyltin dilaurate and 2 parts of polyether siloxane are mixed and stirred evenly to form component B.

[0032] (3) When using, mix component A and component B evenly at a weight ratio of 6:1 to obtain an environmentally friendly polyurethane water blocking reinforcement material.

[0033] The technical indicators of the products obtained in the above examples are as follows:

[0034] Component A Viscosity

Embodiment 2

[0036] (1) Add polymer polyol E to the reactor equipped with agitator 1 (Functionality is 3, hydroxyl value 27mgKOH / g) 100 parts, dehydrated under reduced pressure at 120°C for 2 hours, cooled to 30°C, then added 6 parts of diphenylmethane diisocyanate, reacted at 80°C for 2.5 hours, cooled to At 25°C, add 45 parts of polymethylene polyphenyl polyisocyanate and 30 parts of propylene glycol carbonate, stir evenly, and form A component.

[0037] (2) Polymer polyol E 2 (Functionality is 3, hydroxyl value 450mgKOH / g) 35 parts, 2 parts of butadiene dilaurate and 1.5 parts of polyether siloxane are mixed and stirred evenly to form component B.

[0038] (3) When using, mix component A and component B uniformly at a weight ratio of 8:1 to obtain an environmentally friendly polyurethane water blocking reinforcement material.

[0039] The technical indicators of the products obtained in the above examples are as follows:

[0040] Component A Viscosity

Embodiment 3

[0042] (1) Add polymer polyol E to the reactor equipped with agitator 1 (Functionality is 3, hydroxyl value 27mgKOH / g) 100 parts, dehydrated under reduced pressure at 110°C for 2 hours, cooled to 30°C, then added 6 parts of toluene diisocyanate, reacted at 70°C for 3 hours, cooled to 25°C, Add 35 parts of polymethylene polyphenyl polyisocyanate and 25 parts of propylene glycol carbonate, stir evenly, it is A component.

[0043] (2) Polymer polyol E 2 (Functionality is 3, hydroxyl value 450mgKOH / g) 28 parts, 0.5 part of triethanolamine and 1 part of polyether siloxane are mixed and stirred evenly to form component B.

[0044] (3) When using, mix component A and component B evenly at a weight ratio of 6:1 to obtain an environmentally friendly polyurethane water blocking reinforcement material.

[0045] The technical indicators of the products obtained in the above examples are as follows:

[0046] Component A Viscosity

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Abstract

The invention discloses an environmentally-friendly polyurethane water-plugging reinforcement material and a preparation method thereof. The environmentally-friendly polyurethane water-plugging reinforcement material is characterized by being obtained through mixing a component A and a component B according to the mass ratio of (6-9):1, wherein the component A is prepared by mixing a prepolymer with an inert diluent and isocyanate D2, wherein the prepolymer is formed by isocyanate D1 and polymer polyol E1 through polymerization reaction; the component B is obtained by mixing a polymer polyol, a catalyst and a foam stabilizer. The polyurethane water-plugging reinforcement material solves the limit problem that the traditional grouting material is singly reinforced or plugged, and has the characteristics of high water absorption capability, low viscosity, high strength, good environmentally-friendly property and good durability, and is non-flammable. The environmentally-friendly polyurethane water-plugging reinforcement material is simple in preparation technology and less in injury to construction workers. The environmentally-friendly polyurethane water-plugging reinforcement material can be used for base anti-seepage reinforcement treatment of coal mines and other buildings.

Description

technical field [0001] The invention relates to an environment-friendly polyurethane water blocking reinforcement material and a preparation method thereof. The invention is suitable for anti-seepage and reinforcement treatment of foundations of coal mines and other buildings, and effectively solves the problems of coal and rock mass reinforcement and anti-collapse, roof stability control, sheet side, seepage water and water gushing, and rapid treatment of cavities under complex geological conditions. question. Background technique [0002] Polyurethane grouting material is a chemical grouting material prepared by polymerization of polyisocyanate and polyhydroxy compound. It is widely used in water conservancy and hydropower, construction, traffic engineering and mining fields, and plays a waterproof plug for deformation joints, construction joints and structural joints. It plays the role of strengthening and strengthening the complex strata of building foundations. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/79C08G18/76C08G18/73C08G18/48C08G18/42C09K3/12
CPCC08G18/0842C08G18/10C08G18/4829C09K3/12C08G18/48C08G18/42
Inventor 丁运生李雅迪孙静朱锦马东东孙晓红
Owner HEFEI UNIV OF TECH
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