CN105294977B - Low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant and preparation method and application - Google Patents

Low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant and preparation method and application Download PDF

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Publication number
CN105294977B
CN105294977B CN201510765523.XA CN201510765523A CN105294977B CN 105294977 B CN105294977 B CN 105294977B CN 201510765523 A CN201510765523 A CN 201510765523A CN 105294977 B CN105294977 B CN 105294977B
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flame retardant
component
heat release
low heat
slip casting
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CN105294977A (en
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杨元龙
吴龙梅
曾娟娟
梁柏俊
张维欣
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GUANGZHOU CHEMICAL GROUTING ENGINEERING Co Ltd CHINESE ACADEMY OF SCIENCES
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GUANGZHOU CHEMICAL GROUTING ENGINEERING Co Ltd CHINESE ACADEMY OF SCIENCES
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/4009Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4045Mixtures of compounds of group C08G18/58 with other macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4804Two or more polyethers of different physical or chemical nature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/58Epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • C08K5/51Phosphorus bound to oxygen
    • C08K5/52Phosphorus bound to oxygen only
    • C08K5/521Esters of phosphoric acids, e.g. of H3PO4
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/44Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only

Abstract

The invention belongs to coal and rock chemical consolidation technical field, discloses low heat release mine polyurethane slip casting strengthening material of a kind of high strength and high flame retardant and preparation method and application.The material is by first component and second component by volume 1:1 proportioning obtains;First component includes following components:70~95% isocyanates, 5~30% epoxy resin;Second component includes following components:30~50% flame retardant polyether polyols 1,10~20% flame retardant polyether polyols 2,25~40% plasticizer, 3~8% fire retardants, 2~5% curing agent, 0.5%~1% catalyst, 1%~3% antistatic additive, 0.5%~1% foam stabiliser.

Description

Low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant and preparation method thereof With application
Technical field
The invention belongs to coal and rock chemical consolidation technical field, the low heat release ore deposit of more particularly to a kind of high strength and high flame retardant With polyurethane slip casting strengthening material and preparation method and application.
Background technology
Due to the particularity in colliery field, for the high score subclass slip casting strengthening material applied to underground coal mine except mechanics Beyond the requirement of aspect of performance, to ensure the construction safety of underground, it is also required to possess relatively low exothermic heat of reaction amount and higher Anti-flammability the features such as, but existing coal mine polyurethane grouting and reinforcing class material can not often meet all of the above at the same time It is required that it is in particular in the following aspects:
1. reaction temperature is higher.Existing safety of coal mines professional standard《Colliery reinforces coal and rock high molecular material》(AQ Regulation in 1089-2011), the maximum temperature of mining macromolecule grouting and reinforcing class material should be≤140 DEG C.Although Vehicles Collected from Market On the test result reacted under finite quantity there are some products be less than 140 DEG C, but when it is applied to the actual work of underground coal mine During journey slip casting, since grouting amount is larger, slurry material aggregate amount it is higher, the heat that polyurethane slurries produce during curing reaction compared with It is more, and due to environment relative closure, radiating condition wretched insufficiency so that the accumulation of material internal heat is more, temperature rise compared with It hurry up, maximum temperature is more than 140 DEG C even up to more than 200 DEG C, it is easy to which pyrolysis of glowing, produces cigarette or naked light shows As, and then trigger the serious disaster accidents such as coal-mine fire.
2. anti-flammability is poor.Although some grouting and reinforcing class products in market meet MT113-1995《Underground mine use Polymer product fire retardant, antistatic GENERAL EXPERIMENTATION and decision rule》Requirement, but since practical application must consider to starch The factors such as homogeneity, construction environment, mechanical equipment and the manual operation of material, at present market product cannot still fully meet using will Ask, when slurry material occur in use reaction temperature it is excessive and in the case of fire-retardant rank deficiency, be just easy to produce cigarette or The security incidents such as naked light.
3. the deficiency in terms of mechanical property.Contain isocyanate group in polyurethane slip casting strengthening material slurries, it easily with H encountered in practice of construction process2O reacts and generates CO2Gas so that material constantly foams in the curing process With expansion, the slurry material induration mechanical strength after foaming is greatly lowered, and easily causes the failure of slip casting.It is additionally due to substantial amounts of The generation of carbon dioxide so that some crack shear-zones bear the higher bulbs of pressure, finally cause whole on a large scale Body wall caving, roof fall or pressure rack accident.
Therefore, to overcome existing mine polyurethane injecting paste material the shortcomings that, research and develop a kind of high intensity, anti-flammability height, reaction The low new type mining polyurethane slip casting strengthening material of heat release is very necessary.
The content of the invention
In order to overcome the shortcomings and deficiencies of the prior art described above, primary and foremost purpose of the invention is to provide a kind of high intensity height Fire-retardant low heat release mine polyurethane slip casting strengthening material.
Another object of the present invention is to provide above-mentioned high strength and high flame retardant low heat release mine polyurethane slip casting strengthening material Preparation method.
It is still another object of the present invention to provide the low heat release mine polyurethane slip casting strengthening material of above-mentioned high strength and high flame retardant Application.
The purpose of the present invention is achieved through the following technical solutions:
A kind of low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant, the material is by first component and second group Point by volume 1:1 proportioning obtains;
First component includes following components:
Isocyanates 70.0%~95.0%
Epoxy resin 5.0%~30.0%;
Second component includes following components:
The isocyanates is methyl diphenylene diisocyanate (MDI-50);
The epoxy resin is bisphenol f type epoxy resin 830S, its epoxide equivalent is 165~175g/eq, under the conditions of 25 DEG C Viscosity is 3300~4300mPas, hydrolyzes chlorine≤0.015%.
The flame retardant polyether polyol 1 is Puranol RF 3774, its hydroxy radical content is 370~420mgKOH/g, moisture Mass content is 0.15%, and viscosity is 50~300mPas under the conditions of 25 DEG C;The flame retardant polyether polyol 2 is Puranol RF 3776, its hydroxy radical content are 310~350mgKOH/g, and biodiversity content is 0.15%, and viscosity is 1500 under the conditions of 25 DEG C ~3500mPas.
The plasticizer is chlorinated paraffin -42, under the conditions of its chloride quality is 40~44%, 25 DEG C viscosity be 1900~ 2500mPa·s;
The fire retardant is halogenated phosphate based flame retardant FR-310, its phosphorous quality >=12.0%, chloride quality >= 14.0%, viscosity is 5~10mPas under the conditions of 25 DEG C;
The curing agent is DMP-30;
The antistatic additive is liquid antistatic additive JA-10ql, light yellow viscous liquid, and viscosity is under the conditions of 25 DEG C 122.4mPa·s;
The catalyst is the mixing of dibutyl tin laurate (DBTDL) and 33% triethylene diamine solution (A-33) Thing, the two mass ratio are 1:1~2:1;
The foam stabiliser is hard polyurethane foam silicone oil SD-502.
The preparation method of the low heat release mine polyurethane slip casting strengthening material of above-mentioned high strength and high flame retardant, comprises the steps of:
(1) preparation of first component:
In closed reactor, epoxy resin first is added by proportioning, adds isocyanates, 0.5~1.0h is stirred, obtains First component;Wherein, the dosage of each raw material is by weight percentage:Epoxy resin 5.0%~30.0%, isocyanates 70.0% ~95.0%;
(2) preparation of second component
In closed reactor, sequentially add flame retardant polyether polyol 1, flame retardant polyether polyol 2, plasticizer, fire retardant, Curing agent, catalyst, antistatic additive, foam stabiliser, are uniformly mixed, and stir 2.0~3.0h, obtain second component;Wherein, each original The dosage of material is by weight percentage:Flame retardant polyether polyol 130.0%~50.0%, flame retardant polyether polyol 210.0% ~20.0%, plasticizer 25.0%~40.0%, fire retardant 3.0%~8.0%, catalyst 0.5%~1.0%, curing agent 2.0%~5.0%;Antistatic additive 1.0%~3.0%, foam stabiliser 0.5%~1.0%;
(3) by first component and second component according to volume ratio 1:1 is uniformly mixed, and it is mining poly- to obtain the low heat release of high strength and high flame retardant Urethane slip casting strengthening material.
Application of the low heat release mine polyurethane slip casting strengthening material of above-mentioned high strength and high flame retardant during coal seam reinforces within coal mines.
The present invention is had the following advantages relative to the prior art and effect:
1 by whole system reduce isocyanates content so that itself and H2O reacts the CO of releasing2Gas subtracts It is few, foaming and expansion can be reduced, improves slurry material induration compression strength.In addition by introducing asphalt mixtures modified by epoxy resin in polyurethane system Fat can improve the compression strength of induration.Both comprehensive functions can increase substantially mine polyurethane slip casting strengthening material Compression strength.
2 can greatly improve its fire resistance by adding flame retarding polyether, chlorinated paraffin -42, fire retardant in system.
3 add inert plasticizer chlorinated paraffin -42s, reaction liberated heat is dispersed dilution, hot Amount is difficult to accumulate;In addition, epoxy resin reacts slow compared with polyurethane reaction with curing agent DMP-30, the reaction releasing of whole system Heat is discharged by stages, so as to reduce the maximum temperature of material.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
In the embodiment of the present invention performance indicator according to《Colliery reinforces coal and rock high molecular material》(AQ1089-2011) side Method is measured.
Embodiment 1
(1) preparation of first component
In closed reactor, 25.0g bisphenol f type epoxy resin 830S are first added, add 475.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 500.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 100.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 250.0g Plasticizer chlorinated paraffin -42,80.0g fire retardant FRs -310,20.0g curing agent DMP-30, catalyst 10.0g (wherein two bays Sour dibutyl tin (DBTDL) 5.0g, A-335.0g), 30.0g antistatic additive JA-10ql, 10.0g foam stabiliser SD-502, stir 2.0~3.0h is mixed, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
Embodiment 2
(1) preparation of first component
In closed reactor, 50.0g bisphenol f type epoxy resin 830S are first added, add 450.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 460.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 120.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 280.0g Plasticizer chlorinated paraffin -42,65.0g fire retardant FRs -310,25.0g curing agent DMP-30, catalyst 10.0g (wherein two bays Sour dibutyl tin (DBTDL) 5.0g, A-335.0g), 30.0g antistatic additive JA-10ql, 10.0g foam stabiliser SD-502, stir 2.0~3.0h is mixed, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
Embodiment 3
(1) preparation of first component
In closed reactor, 75.0g bisphenol f type epoxy resin 830S are first added, add 425.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 430.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 140.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 310.0g Plasticizer chlorinated paraffin -42,50.0g fire retardant FRs -310,30.0g curing agent DMP-30, catalyst 7.5g (wherein tin dilaurates Dibutyl tin (DBTDL) 5.0g, A-332.5g), 25.0g antistatic additive JA-10ql, 7.5g foam stabiliser SD-502, stirring 2.0~3.0h, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
Embodiment 4
(1) preparation of first component
In closed reactor, 100.0g bisphenol f type epoxy resin 830S are first added, add 400.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 380.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 160.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 350.0g Plasticizer chlorinated paraffin -42,35.0g fire retardant FRs -310,35.0g curing agent DMP-30, catalyst 7.5g (wherein tin dilaurates Dibutyl tin (DBTDL) 5.0g, A-332.5g), 25.0g antistatic additive JA-10ql, 7.5g foam stabiliser SD-502, stirring 2.0~3.0h, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
Embodiment 5
(1) preparation of first component
In closed reactor, 125.0g bisphenol f type epoxy resin 830S are first added, add 375.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 340.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 180.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 380.0g Plasticizer chlorinated paraffin -42,30.0g fire retardant FRs -310,40.0g curing agent DMP-30, catalyst 5.0g (wherein tin dilaurates Dibutyl tin (DBTDL) 2.5g, A-332.5g), 20.0g antistatic additive JA-10ql, 5.0g foam stabiliser SD-502, stirring 2.0~3.0h, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
Embodiment 6
(1) preparation of first component
In closed reactor, 150.0g bisphenol f type epoxy resin 830S are first added, add 350.0g diphenyl methanes Diisocyanate (MDI-50), stirs 0.5~1.0h, obtains 500.0g first components.
(2) preparation of second component
In closed reactor, (the goodization chemistry stocks of 300.0g flame retardant polyether polyol Puranol RF 3774 are sequentially added Part Co., Ltd), 200.0g flame retardant polyether polyol Puranol RF 3776 (Jiahua Chemicals Inc.), 400.0g Plasticizer chlorinated paraffin -42,30.0g fire retardant FRs -310,50.0g curing agent DMP-30, catalyst 5.0g (wherein tin dilaurates Dibutyl tin (DBTDL) 2.5g, A-332.5g), 10.0g antistatic additive JA-10ql, 5.0g foam stabiliser SD-502, stirring 2.0~3.0h, obtains 1000.0g second components.
(3) by first, second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.In normal conditions, according to《Colliery reinforces coal and rock high molecular material》(AQ 1089-2011) is carried out Test maximum temperature, compression strength, fire resistance.Performance indicator is shown in Table 1.
The low heat release mine polyurethane slip casting strengthening material performance of 1 high strength and high flame retardant of table
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from above-described embodiment Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (6)

  1. A kind of 1. low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant, it is characterised in that:The material is by first Component and second component by volume 1:1 proportioning obtains;
    First component includes following components:
    Isocyanates 70.0%~95.0%
    Epoxy resin 5.0%~30.0%;
    Second component includes following components:
    The plasticizer is chlorinated paraffin -42, under the conditions of its chloride quality is 40~44%, 25 DEG C viscosity be 1900~ 2500mPa·s;
    The fire retardant is halogenated phosphate based flame retardant FR-310, its phosphorous quality >=12.0%, chloride quality >=14.0%, Viscosity is 5~10mPas under the conditions of 25 DEG C;
    The curing agent is DMP-30.
  2. 2. a kind of low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant according to claim 1, its feature It is:The isocyanates is methyl diphenylene diisocyanate;
    The epoxy resin is bisphenol f type epoxy resin 830S, its epoxide equivalent is 165~175g/eq, viscosity under the conditions of 25 DEG C For 3300~4300mPas, chlorine≤0.015% is hydrolyzed.
  3. 3. a kind of low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant according to claim 1, its feature It is:The flame retardant polyether polyol 1 is Puranol RF 3774, its hydroxy radical content is 370~420mgKOH/g, mass distributary It is 0.15% to measure content, and viscosity is 50~300mPas under the conditions of 25 DEG C;The flame retardant polyether polyol 2 is Puranol RF 3776, its hydroxy radical content is 310~350mgKOH/g, and biodiversity content is 0.15%, under the conditions of 25 DEG C viscosity for 1500~ 3500mPa·s。
  4. 4. a kind of low heat release mine polyurethane slip casting strengthening material of high strength and high flame retardant according to claim 1, its feature It is:
    The antistatic additive is liquid antistatic additive JA-10ql, light yellow viscous liquid, and viscosity is under the conditions of 25 DEG C 122.4mPa·s;
    The catalyst for dibutyl tin laurate (DBTDL) and 33% triethylene diamine solution (A-33) mixture, two Person's mass ratio is 1:1~2:1;
    The foam stabiliser is hard polyurethane foam silicone oil SD-502.
  5. 5. according to a kind of low heat release mine polyurethane grouting and reinforcing material of high strength and high flame retardant of Claims 1 to 4 any one of them The preparation method of material, it is characterised in that comprise the steps of:
    (1) preparation of first component:
    In closed reactor, epoxy resin first is added by proportioning, adds isocyanates, 0.5~1.0h is stirred, obtains first group Point;Wherein, the dosage of each raw material is by weight percentage:Epoxy resin 5.0%~30.0%, isocyanates 70.0%~ 95.0%;
    (2) preparation of second component
    In closed reactor, flame retardant polyether polyol 1, flame retardant polyether polyol 2, plasticizer, fire retardant, curing are sequentially added Agent, catalyst, antistatic additive, foam stabiliser, are uniformly mixed, and stir 2.0~3.0h, obtain second component;Wherein, each raw material Dosage is by weight percentage:Flame retardant polyether polyol 1 30.0%~50.0%, flame retardant polyether polyol 2 10.0%~ 20.0%th, plasticizer 25.0%~40.0%, fire retardant 3.0%~8.0%, catalyst 0.5%~1.0%, curing agent 2.0% ~5.0%;Antistatic additive 1.0%~3.0%, foam stabiliser 0.5%~1.0%;
    (3) by first component and second component according to volume ratio 1:1 is uniformly mixed, and obtains the low heat release mine polyurethane of high strength and high flame retardant Slip casting strengthening material.
  6. 6. according to a kind of low heat release mine polyurethane grouting and reinforcing material of high strength and high flame retardant of Claims 1 to 4 any one of them Expect the application during coal seam reinforces within coal mines.
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CN107033317A (en) * 2017-06-13 2017-08-11 山西省建筑科学研究院 A kind of hard polyurethane foam material and preparation method and application
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