High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof

A filling material and high flame-retardant technology, which is applied in the field of high flame-retardant low-temperature two-component filling materials for coal mines and its preparation, can solve problems such as insufficient storage stability, pungent odor, and high corrosiveness of raw materials, and achieve production And the requirements of the construction personnel are low, the effect of avoiding high corrosion and good flame retardancy

Active Publication Date: 2014-04-02
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, phenolic materials or polyurethane materials are often used for filling. The former has the problems of high corrosiveness of raw materials,

Method used

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  • High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof
  • High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof
  • High-flame-retardance low-temperature bicomponent filling material for coal mines and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of component A

[0032] Add 65 parts of accurately measured sodium silicate aqueous solution (water glass modulus 1.5, Baume degree 50), 20 parts polyol (functionality 2, molecular weight 2000), 10 parts ethylene glycol, 5 parts triethanolamine , 3 parts of silicone oil, 1 part of catalyst triethylenediamine, put into the reaction kettle, stir and mix for 1 hour, discharge the material after the sampling test is qualified, and seal the package;

[0033] (2) Preparation of component B

[0034] Put 90 parts of accurately measured polymethylene polyphenyl polyisocyanate 44V20 (Bayer), 5 parts of toughening agent tris(chloroisopropyl) phosphate, and 5 parts of foaming agent HCFC-141b; put them into the reaction kettle in order, and stir Mix for 1 hour, discharge after passing the sampling, and replace with nitrogen and seal the package. The test product indicators are shown in Table 1.

Embodiment 2

[0036] (1) Preparation of component A

[0037] 90 parts of accurately measured sodium silicate aqueous solution (water glass modulus of 2.5, Baume degree of 48), 10 parts of polyol (functionality of 2, molecular weight of 3000), 2 parts of silicone oil, compound catalyst [Sanethylene Base diamine and bis(dimethylaminoethyl)ether compounded at a ratio of 1:1] 2 parts, put into the reaction kettle, stir and mix for 1.5 hours, after the sampling test is qualified, discharge and seal the package;

[0038] (2) Preparation of component B

[0039] Put 70 parts of polymethylene polyphenyl polyisocyanate M20S (BASF) accurately measured, 15 parts of toughening agent citrate, and 15 parts of foaming agent HCFC-141b; put them into the reactor in order, stir and mix for 2 hours, and the sampling is qualified After the material is discharged, the nitrogen is replaced with a sealed package. The test product indicators are shown in Table 1.

Embodiment 3

[0041] (1) Preparation of component A

[0042] 75 parts of sodium silicate aqueous solution (water glass modulus of 2.0, Baume degree of 50), 22 parts of polyol (functionality of 2, molecular weight of 2000), 3 parts of diethanolamine, 3 parts of silicone oil, catalyst 3 parts of triethylenediamine are put into the reaction kettle, stirred and mixed for 2 hours, discharged after the sampling inspection is qualified, and sealed and packed;

[0043] (2) Preparation of component B

[0044] 55 parts of accurately measured polymethylene polyphenyl polyisocyanate PM200 (Yantai Wanhua), 5 parts of modified MDI DG5412 (Shandong Yinuowei Company), 15 parts of toughening agent glycerol triacetate, foaming agent HCFC 25 parts of -141b; put into the reaction kettle in order, stir and mix for 1.5 hours, discharge after passing the sampling, replace with nitrogen and seal the package. The test product indicators are shown in Table 1.

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Abstract

The invention belongs to the field of chemical synthesis and in particular relates to a high-flame-retardance low-temperature bicomponent filling material for coal mines and a preparation method thereof. The filling material comprises a component A and a component B, wherein when the filling material is used, the component A and the component B are mixed according to the volume ratio of 1:(1.0-1.5) and are foamed; the component A is a composition with a silicate aqueous solution as the main body; and the component B is a composition with polyisocyanate as the main body. The filling material and the preparation method have the beneficial effects that the filling material is convenient to transport and has low viscosity, fluidity and storage stability; the raw materials are free from pollution and corrosion and the filling material does not contain irritating volatile solvents; the filling material has high foaming ratio and has low internal temperature during foaming; a foaming body has good flame retardance and certain toughness; the preparation method is simple and practicable, has low requirements on production and construction personnel, is short in production cycle, is free from equipment corrosion, is free from three wastes in the whole process and does not affect the environment.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a high flame-retardant low-temperature two-component filling material for coal mines and a preparation method thereof. Background technique [0002] With the large-scale mining of coal mines in my country, it is often encountered that the roadway and the roof of the coal mining face are under high pressure, the top coal is broken, and the problem of collapse occurs during the excavation process, and then the filling material is injected into the upper cavity of the roof caving area, and then the roadway surrounding Grouting reinforcement, tunneling and mining will be carried out after the roof of the roadway has fallen and the surrounding rock at the sides has been reinforced. At present, phenolic materials or polyurethane materials are often used for filling. The former has the problems of high corrosiveness of raw materials, irritating odor when foaming, insufficien...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/08C08K3/34C08G18/66C08G18/48C08G18/32C08J9/14C08G101/00
Inventor 张丽郝德开边宪磊唐国涛王艳艳
Owner SHANDONG INOV NEW MATERIALS CO LTD
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