Polyurethane grouting water-plugging reinforcement material and preparation method thereof

A reinforcement material and grouting technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of low compressive strength, insufficient flame retardancy, etc., and achieve the effect of uniform distribution, less defects, and regular arrangement

Active Publication Date: 2013-08-21
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing polyurethane grouting water blocking reinforcement materials have low compressive strength and insufficient fl

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 60g of polyether polyol after vacuum dehydration, 1,4-butanediol: 3g, 2g of butanediol, 0.1g of dibutyltin and 0.2g of defoamer 54010.2g into the reaction cup, make it fully mixed evenly, and make white material. While stirring, add black material polyisocyanate to 34.7g of PM200, and continue stirring until the mixture is uniform. When the temperature rises after mixing, it is poured into the mold for foaming. After the foam is generated, it is placed at room temperature for 22 hours to fully mature, and then the sample is prepared.

[0032] Mechanical property test:

[0033] The compression and tensile properties are tested according to GB / T1040-92, and the impact properties are tested according to GB / T1043--93. The infrared spectrometer was used to analyze the sample powder by infrared spectrometer, and the surface morphology was analyzed by scanning electroplating.

[0034] Through the analysis of test data, the optimal process parameters of rigid polyurethan...

Embodiment 2

[0037] Put the polyether polyol after vacuum dehydration: 50g, 1,4-butanediol: 5g, ethylene glycol glycerol: 5, cyclohexylamine: 0.2g and defoamer 5401: 1.2g into the reaction cup, make It is fully mixed evenly to make white material. While stirring, add black material polyisocyanate to 39.2g of PM200, and continue stirring until the mixture is uniform. When the temperature rises after mixing, it is poured into the mold for foaming. After the foam is generated, it is placed at room temperature for 24 hours to fully mature, and then the sample is prepared.

[0038] Mechanical property test:

[0039] The compression and tensile properties are tested according to GB / T1040-92, and the impact properties are tested according to GB / T1043--93. The infrared spectrometer was used to analyze the sample powder by infrared spectrometer, and the surface morphology was analyzed by scanning electroplating.

[0040] Through the analysis of test data, the optimal process parameters of rigid ...

Embodiment 3

[0043] Put the polyether polyol after vacuum dehydration: 55g, 1,4-butanediol: 8g, ethylene glycol glycerol: 5, cyclohexylamine: 0.2g and defoamer 54011.8g into the reaction cup to make it fully Mix well to make white material. While stirring, add black material polyisocyanate to 30g of PM200, and continue stirring until the mixture is uniform. When the temperature rises after mixing, it is poured into the mold for foaming. After the foam is generated, it is placed at room temperature for 26 hours to fully mature, and then the sample is prepared.

[0044] Mechanical property test:

[0045] The compression and tensile properties are tested according to GB / T1040-92, and the impact properties are tested according to GB / T1043--93. The infrared spectrometer was used to analyze the sample powder by infrared spectrometer, and the surface morphology was analyzed by scanning electroplating.

[0046] Through the analysis of test data, the optimal process parameters of rigid polyureth...

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Abstract

The invention relates to a polyurethane grouting water-plugging reinforcement material and a preparation method thereof. The polyurethane grouting water-plugging reinforcement material comprises the following raw materials in percentage by weight: 50-60 percent of polyether polyol, 30-40 percent of polyisocyanates, 1-5 percent of crosslinking agent, 1-10 percent of chain extender, 0.1-0.2 percent of catalyst and 0.2-1.8 percent of defoaming agent. The preparation method comprises the following steps: sequentially adding the polyether polyol, chain extender, crosslinking agent, catalyst and defoaming agent subjected to vacuum dehydration into a reaction cup, and fully and uniformly mixing to prepare a white material; adding the black material isocyanate in a stirring state, continuing stirring until the materials are uniformly mixed; and mixing the solution colors, raising the temperature, foaming the materials in a mold after the materials are whitened, completely curing and performing sample preparation. The polyurethane grouting water-plugging reinforcement material is uniform in distribution, regular in arrangement and fewer in defects, the impact fracture appearance has the brittle fracture characteristics, and the water-plugging efficiency is over 95 percent.

Description

technical field [0001] The invention belongs to chemical grouting materials, in particular to a polyurethane grouting water blocking reinforcement material and a preparation method thereof. Background technique [0002] Polyurethane grouting material is a polymer material chemically synthesized from polyisocyanate and polyhydroxy polyether. It has the characteristics of light weight, low thermal conductivity, chemical corrosion resistance, abrasion resistance, oil resistance and water resistance. At the same time, it can be used with The water undergoes a chemical reaction to produce carbon dioxide to form a secondary osmotic pressure, which increases the reinforcing effect and also has the effect of water blocking. Therefore, polyurethane grouting materials are more and more widely used in coal mines and underground engineering. [0003] Polyurethane grouting materials used in coal mines require low viscosity to meet the needs of penetration in cracks, have good performanc...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C09K8/44C08G101/00
Inventor 王帅陈鹏耿佃勇荆晓东董伟
Owner ZIBO DEXIN LIANBANG CHEM IND
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