Single-component oil-soluble polyurethane grouting material, and raw materials and preparation method thereof

A grouting material and oil-soluble technology, applied in the field of single-component oil-soluble polyurethane grouting material and its raw materials and preparation, can solve the problems of increased labor safety risks on construction sites, inability to meet the requirements of plugging and water-stopping, and deteriorating the environmental performance of products. , to achieve good elasticity and wet base bonding strength, high environmental protection, and the effect of reducing viscosity

Inactive Publication Date: 2013-02-27
CHINA ACAD OF BUILDING RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For a long time, the production status of domestic polyurethane grouting materials can be summarized as follows: (1) In order to reduce the economic cost and maintain the low viscosity characteristics of the product, TDI is generally used as the main raw material, and TDI is a highly carcinogenic substance, which leads to the environmental protection of the product Not good; (2) Extensive use of small molecular organic substances such as benzene and ketones as solvents to reduce the viscosity of the product will further deteriorate the environmental performance of the product while greatly increasing the risk of labor safety at the construction site and may cause solidification (3) The products are mainly rigid foam consolidation products, and there are few elastic consolidation products, which cannot meet the conditions of dynamic load and deformation (such as underground engineering deformation joints or shield tunneling methods). Segment joints) cracks or seams need to plug and stop water

Method used

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  • Single-component oil-soluble polyurethane grouting material, and raw materials and preparation method thereof
  • Single-component oil-soluble polyurethane grouting material, and raw materials and preparation method thereof
  • Single-component oil-soluble polyurethane grouting material, and raw materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The raw material of one-component oil-soluble polyurethane grouting material is composed of the following components:

[0044] Polyether DL-1000 (Mn=1000, fn=2) 50 parts by weight

[0045] Polyether DL-2000 (Mn=2000, fn=2) 100 parts by weight

[0046]Polyether 330N (Mn=3000, fn=3) 50 parts by weight

[0047] Liquefied MDI (-NCO%≥30%) 114.7 parts by weight

[0048] 30 parts by weight of octyl phthalate

[0049] 5 parts by weight of polyalkylsiloxane

[0050] 6 parts by weight of N-methylmorpholine

[0051] The one-component oil-soluble polyurethane grouting material is prepared from the above raw materials.

[0052] The preparation method of the above-mentioned single-component oil-soluble polyurethane grouting material is as follows:

[0053] a. According to the above formula, add 200 parts by weight of polyether and 30 parts by weight of octyl phthalate into the reaction kettle with vacuum distillation device and stirrer, and dehydrate under the conditions of tem...

Embodiment 2

[0059] The raw material of one-component oil-soluble polyurethane grouting material is composed of the following components:

[0060] Polyether DL-400 (Mn=400, fn=2) 50 parts by weight

[0061] Polyether DL-1000 (Mn=1000, fn=2) 100 parts by weight

[0062] Polyether 330N (Mn=3000, fn=3) 50 parts by weight

[0063] Liquefied MDI (-NCO%≥30%) 159.4 parts by weight

[0064] 30 parts by weight of octyl phthalate

[0065] Polyalkylsiloxane 6.3 parts by weight

[0066] 7.2 parts by weight of stannous octoate

[0067] The one-component oil-soluble polyurethane grouting material is prepared from the above raw materials.

[0068] The preparation method of the above-mentioned single-component oil-soluble polyurethane grouting material is as follows:

[0069] a. According to the above formula, 200 parts by weight of polyether and 30 parts by weight of plasticizer (octyl phthalate) are added in the reaction kettle with vacuum decompression distillation device and stirrer, at a temper...

Embodiment 3

[0075] The raw material of one-component oil-soluble polyurethane grouting material is composed of the following components:

[0076] Polyether DL-400 (Mn=400, fn=2) 100 parts by weight

[0077] Polyether DL-2000 (Mn=2000, fn=2) 50 parts by weight

[0078] Polyether 330N (Mn=3000, fn=3) 50 parts by weight

[0079] PAPI (-NCO%≈32.5%) 141.5 parts by weight

[0080] 60 parts by weight of octyl phthalate

[0081] 4.5 parts by weight of polyalkylsiloxane

[0082] 6 parts by weight of stannous octoate

[0083] The one-component oil-soluble polyurethane grouting material is prepared from the above raw materials.

[0084] The preparation method of the above-mentioned single-component oil-soluble polyurethane grouting material is as follows:

[0085] a. According to the above formula, add 200 parts by weight of polyether and 60 parts by weight of octyl phthalate into a reaction kettle with a vacuum distillation device and agitator, and dehydrate at a temperature of 100 °C and a p...

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Abstract

The invention discloses a single-component oil-soluble polyurethane grouting material, and raw materials and a preparation method thereof. The single-component oil-soluble polyurethane grouting material comprises the following raw materials in parts by weight: 200 parts of hydroxyl-terminated polyether, 60-200 parts of isocyanate, 10-80 parts of plasticizer, 1-8 parts of foam stabilizer and 1-15 parts of catalyst. On the basis of the characteristics of single-liquid injection, immediate reaction after meeting water, quick water seal and the like in the existing oil-soluble polyurethane grouting material, the single-component oil-soluble polyurethane grouting material provided by the invention does not use volatile organic solvents or free isocyanate compounds which possibly reside, and can satisfy the demand for long-term water seal in special application occasions, such as adaptive deformation without damage and the like, on the premise of obtaining better environmental protection performance.

Description

technical field [0001] The present invention relates to the technical field of foundation reinforcement, anti-seepage and sealing of leaking water from cracks and joints in industries such as construction, water conservancy, and transportation, and specifically relates to a single-component oil-soluble polyurethane grouting material and its raw materials and preparation method. Background technique [0002] Polyurethane grouting material is a solution grouting material for anti-seepage, plugging, filling, reinforcement and other purposes prepared with polyisocyanate and polyol compounds as the main raw materials, supplemented by other additives, and prepared through a certain process. As a member of the large family of polyurethane grouting materials, the characteristic of the one-component water-active polyurethane grouting material is that the grout can react with water to foam and solidify. Driven by the filling pressure and the expansion pressure of carbon dioxide genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08G18/76C08G18/48C09K3/12E02D29/16
Inventor 张勇赵霄龙冷发光霍胜旭周庆
Owner CHINA ACAD OF BUILDING RES
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