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A kind of functional uio-66/polyurethane composite grouting reinforcing agent and preparation method thereof

A technology of UIO-66 and UIO-66-NH2, which is applied in the field of functional UIO-66/polyurethane composite grouting reinforcement material and its preparation, can solve the problems restricting industrial application, achieve excellent gas adsorption and separation performance, and can structure Design, topology-rich effects

Active Publication Date: 2022-03-11
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve an ideal dispersion effect, nanomaterials such as montmorillonite, calcium carbonate, carbon nanotubes and graphene must be modified, but the complicated modification process restricts the next industrial application

Method used

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  • A kind of functional uio-66/polyurethane composite grouting reinforcing agent and preparation method thereof
  • A kind of functional uio-66/polyurethane composite grouting reinforcing agent and preparation method thereof
  • A kind of functional uio-66/polyurethane composite grouting reinforcing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of functionalized UIO-66: 4.53g (25mmol) of 2-aminoterephthalic acid and 11.15g (26mmol) of zirconium nitrate metal salt were dissolved in 125ml of acetic acid aqueous solution with an acetic acid concentration of 0.15wt%, and an equal volume of Mix the two solutions evenly and transfer them to a container, and reflux at 100°C for 12-48 hours to obtain a powder product, which is washed and purified with anhydrous methanol and / or anhydrous dichloromethane to obtain the functionalized UIO-66-NH 2 .

[0039] The preparation method of functionalized UIO-66 / polyurethane composite grouting reinforcement material comprises the following steps

[0040] (1) Mix 90 parts of PAPI, 7 parts of DOP, and 8 parts of butyl ether acetate, stir at room temperature for 15 minutes, and store in airtight;

[0041] (2), 10 parts of activated and ground UIO-66-NH 2 Slowly add to the vigorously stirred mixture above, and continue stirring in a closed environment at 55°C for 2 hour...

Embodiment 2

[0045] Preparation of functionalized UIO-66: 4.15g (23mmol) 2,5-dihydroxyterephthalic acid, 11.15g (26mmol) zirconium nitrate metal salt were dissolved in 125ml acetic acid aqueous solution of 1.0wt% acetic acid concentration, and then Equal volumes of the two solutions were mixed and transferred to a container, and refluxed at 100°C for 12-48 hours to obtain a powder product, which was washed and purified with anhydrous methanol and / or anhydrous dichloromethane to obtain the functionalized UIO-66-( Oh) 2 .

[0046] The preparation method of functionalized UIO-66 / polyurethane composite grouting reinforcement material comprises the following steps

[0047] (1) Mix 90 parts of PAPI, 7 parts of DOP, and 8 parts of butyl ether acetate, stir at room temperature for 15 minutes, and store in airtight;

[0048] (2), 10 parts of activated and ground UIO-66-(OH) 2 Slowly add to the vigorously stirred mixture above, and continue stirring in a closed environment at 55°C for 2 hours to ...

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Abstract

A functionalized UIO-66 / polyurethane composite grouting reinforcement, which consists of: 80-100 parts of polyol polymer, 15-55 parts of flame-retardant inert diluent, 0.5-3 parts of catalyst, and 80-parts of polyisocyanate by mass fraction 100 parts, plasticizer 10‑40 parts, functionalized UIO‑66 5‑35 parts. The polyurethane composite material can effectively avoid the agglomeration of nanometer materials in the matrix, and the synthesis process is simple and efficient. The functionalized UIO‑66 was grafted onto the polyurethane matrix to construct a composite system in which the nanomaterial particles were uniformly dispersed, and the mechanical strength of the consolidated body was significantly enhanced after grouting.

Description

technical field [0001] The invention belongs to the technical field of grouting reinforcement materials for coal and rock mass, and in particular relates to a functionalized UIO-66 / polyurethane composite grouting reinforcement material and a preparation method thereof. Background technique [0002] With the expansion of the scale and depth of coal mining, the underground geological conditions are becoming more and more complex, and the lithology of many roadway surrounding rocks is brittle and there are many cracks and faults. This kind of soft coal and rock mass is easy to form a broken zone with low mechanical strength, which seriously affects the safety of coal mining. Especially for loose and broken roadway surrounding rock, bolts, etc. cannot be effectively anchored, grouting reinforcement is a simple and effective treatment method. Therefore, grouting reinforcement technology is of great significance to improve mining efficiency and ensure coal mining safety. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/64C08G18/48C08G83/00C08K5/521
CPCC08G18/6415C08G18/4804C08G18/4081C08G83/008C08K5/521
Inventor 于潇沣刘鲤粽王玉超柏广峰翟晶刘俊海张豫李洪蛟
Owner CCTEG CHINA COAL RES INST
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