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High flashing point environment-friendly soluble polyurethane chemical grouting material

A water-soluble polyurethane and chemical grouting technology, which is applied in the field of water-soluble polyurethane chemical grouting materials, can solve the problems of high risk, life safety and property loss, and negative impact of polyurethane material application, and achieve good hydrophilic performance and construction safety Good results

Active Publication Date: 2009-12-30
POWERCHINA HUADONG ENG COPORATION LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occurrence of these accidents not only caused losses to people's lives and property, but also had a negative impact on the application of polyurethane materials themselves.
[0005] At the same time, because the traditional polyurethane grouting material is a flammable liquid with a medium flash point, the requirements for transportation and fire protection are also very high, and a special dangerous goods transport vehicle is required for transportation, which is not only costly, but also potentially dangerous.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, the raw material proportioning of this example is:

[0017] Polyether polyol (molecular weight 6000, hydroxyl value 30mg KOH / g) 36 parts by weight

[0018] 14 parts by weight of dibutyl phthalate

[0019] 32 parts by weight of toluene diisocyanate

[0020] 18 parts by weight of high boiling point composite solvent

[0021] 1 part by weight of polyalkane siloxane

[0022] Wherein the high boiling point composite solvent is formed by mixing 20 parts by weight of dimethyl succinate, 32 parts by weight of dimethyl glutarate and 43 parts by weight of dimethyl adipate.

[0023] The process is:

[0024] (1) Add 36 parts by weight of polyether polyol and 14 parts by weight of dibutyl phthalate into a reaction kettle equipped with a condenser and an agitator, dehydrate under reduced pressure at 110°C for 2 hours, take samples, and measure the moisture content Determination, the water content should be <0.10%, and then add 32 parts by weight of toluene diisocya...

Embodiment 2

[0028] Embodiment 2, the proportioning of raw materials of this example is:

[0029] Polyether polyol (molecular weight 6000, hydroxyl value 30mg KOH / g) 50 parts by weight

[0030] Dibutyl phthalate 9 parts by weight

[0031] 16 parts by weight of toluene diisocyanate

[0032] 25 parts by weight of high boiling point composite solvent

[0033] 1.5 parts by weight of polyalkane siloxane

[0034] Wherein the high boiling point composite solvent is formed by mixing 20 parts by weight of dimethyl succinate, 32 parts by weight of dimethyl glutarate and 43 parts by weight of dimethyl adipate.

[0035] Technological process is identical with embodiment 1.

[0036] The technical index of the product that above embodiment obtains is as follows:

[0037] performance

Embodiment 3

[0038] Embodiment 3, the proportioning of raw materials of this example is:

[0039] Polyether polyol (molecular weight 5000, hydroxyl value 20mg KOH / g) 30 parts by weight

[0040] Dioctyl phthalate 5 parts by weight

[0041] 10 parts by weight of diphenylmethane-4,4'-diisocyanate

[0042] 10 parts by weight of high boiling point composite solvent

[0043] 0.5 parts by weight of polyalkane siloxane

[0044]Wherein the high boiling point composite solvent is formed by mixing 10 parts by weight of dimethyl succinate, 20 parts by weight of dimethyl glutarate and 35 parts by weight of dimethyl adipate.

[0045] The process is:

[0046] (1) Add 30 parts by weight of polyether polyol and 5 parts by weight of dioctyl phthalate into a reaction kettle equipped with a condenser and an agitator, dehydrate under reduced pressure at 100°C for 1 hour, take samples, and measure the moisture content Determination, the water content should be <0.10%, and then add 10 parts by weight of dip...

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PUM

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Abstract

The invention relates to a high flashing point environment-friendly soluble polyurethane chemical grouting material, aiming at solving the technical problem of providing the high flashing point environment-friendly soluble polyurethane chemical grouting material which has the characteristics of high flashing point, non-flammability and good environmental protection performance on the basis of maintaining the original comprehensive performance of soluble polyurethane grouting material. The high flashing point environment-friendly soluble polyurethane chemical grouting material has the technical proposal for solving the technical problem: the material is characterized by comprising the components based on parts by weight: 10-35 parts of isocyanate, 30-80 parts of hydrophilic polyether, 5-30 parts of plasticizer, 10-50 parts of high boiling point composite solvent and 0.5-3 parts of foam stabilizer. The chemical grouting material is applicable to foundation seepage prevention treatment of large dams and other buildings, water burst treatment of subway and tunnel, etc.

Description

technical field [0001] The invention relates to a high flash point environment-friendly water-soluble polyurethane chemical grouting material. It is suitable for anti-seepage treatment of dams and other building foundations, water gushing treatment of subways and tunnels, etc. Background technique [0002] Polyurethane grouting material is an important grouting material used in water conservancy, hydropower, tunnels, subways, mines, civil air defense, industrial and civil buildings to prevent seepage, plugging and reinforcement. Polyurethane chemical grouting materials can be divided into two categories: water-soluble (hydrophilic type) and oil-soluble (hydrophobic type) according to their properties; according to the preparation method, they can be divided into one-step method and pre-polymerization method. The one-step method is to make the grouting material into two components, one component is polyether polyol and the other is isocyanate. The grouting material prepared ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48
Inventor 包银鸿林中华谭建平程红沈幼娟吴启民
Owner POWERCHINA HUADONG ENG COPORATION LTD
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