CN108409937A - A kind of polyurethane waterglass composite grouting material and preparation method thereof - Google Patents
A kind of polyurethane waterglass composite grouting material and preparation method thereof Download PDFInfo
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- CN108409937A CN108409937A CN201810309354.2A CN201810309354A CN108409937A CN 108409937 A CN108409937 A CN 108409937A CN 201810309354 A CN201810309354 A CN 201810309354A CN 108409937 A CN108409937 A CN 108409937A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/61—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of polyurethane waterglass composite grouting materials and preparation method thereof, belong to a kind of construction material technical field.The present invention has lower viscosity and surface tension using silane coupling agent, wetting capacity is strong, it can be opened in construction surface spreading rapidly, infiltrate rock surface gap, the inorganic group in silane coupling agent can react with the oxide of fracture faces simultaneously generates stable silicon oxygen bond, organic group and NCO reaction formings are on organic macromolecule, to increase the bond strength of grouting material and for the infiltration of construction surface, catalytic component is promoted to be dispersed in waterglass simultaneously, avoid phase separation, concrete castability is good, permeability is strong, and there is good compression strength, timely filling can be played to ground/gravel structure, it reinforces, the effects that waterproofing and leakage-stopping, suitable for bridge, subway, dam, rock stratum, bay, the waterproofing and leakage-stoppings of the slight cracks such as civil air defense constructions and installations and ground it is firm impervious.
Description
Technical field
The present invention relates to a kind of polyurethane waterglass composite grouting materials and preparation method thereof, belong to a kind of construction material skill
Art field.
Background technology
In recent years, China's underground engineering and tunnel construction career development are swift and violent, more ridge railway, the vcehicular tunnel quantity built
And length ranks the first in the world；Subway is also built in big city energetically in order to solve traffic jam issue；In order to meet China's production
The demand lived to coal resources, being also gradually increased dynamics to the exploitation of coal, " the above can all face the surface water and ground
The problem of lower water is gushed out by the various channels such as crack, tomography and subsidence area, tunnel, mine water disaster are caused, and to constructing tunnel
It threatens with operation, Mining Market etc., while can also bring huge economic loss.All kinds of tunnels and underground engineering be all
It is built under different engineering geology, hydrogeology and environmental condition, execution conditions are multifarious.Therefore, it to solve thus
Caused water damage problem, it is necessary to take realistic plan and safe and reliable technical measures, in these technical measures, fill
Slurry technology is exactly essential one kind.
It is one of the effective way for administering water damage to the attenuation of rock mass strength to weaken water body using grouting method.Traditional
Contain a large amount of Free water in cement grout, not only rock mass can further be weakened, but also is difficult for some water-swellable rock mass
With infiltration.Chemical grout can then overcome disadvantage mentioned above, have high application value under conditions of complexity.In numerous changes
It learns in grouting material, polyurethane grouting material is because having many advantages, such as that moderate viscosity, rate of set are fast, the time is adjustable, water-tolerant
And it is widely used.But pure polyurethane grouting material cost is higher, and the performances such as presetting period, compression strength, elasticity modulus are poor.
In order to obtain, cost is relatively low, the preferable polyurethane grouting material of comprehensive performance, it is necessary to is modified to it.At present, it has been found that
There is the pertinent literature of more modifying water glass polyurethane to report, i.e., first waterglass is handled and carried out again with base polyurethane prepolymer for use as
The grouting material with preferable comprehensive performance is made in reaction, but in reporting material treatment processes are cumbersome and uncertain factor compared with
It is more.Stage polyurethane-waterglass injecting paste material now, to meet quick-setting practice of construction requirement, often in water glass solution
Middle addition catalyst promotes reaction system rapid curing.Due to waterglass category indissoluble alkaline matter, in production and practice of construction
Shi Bixu ensures that catalyst temporarily can be uniformly dispersed in water glass solution by mechanical forced stirring, stands a period of time
Afterwards, catalyst component and waterglass are layered, and inconvenience is brought to actual production and construction.
Invention content
The technical problems to be solved by the invention：For existing polyurethane grouting material presetting period, compression strength, elasticity
The performances such as modulus are poor, and catalyst component and waterglass are easily layered, and inconvenience is brought to actual production and construction
Problem provides a kind of polyurethane waterglass composite grouting material and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
The composite grouting material is by component A and B component in mass ratio 1：1~1.5：1 composition, wherein：
Component A includes following weight parts raw material：
150~200 parts of waterglass, 30~40 parts of polypropylene oxide triols, 10~15 parts of neopentyl glycols, 0.9~1.5 part of two bay
Sour dibutyl tin, 1~2 part of silane coupling agent, 0.3~0.5 part of surfactant.
B component includes following weight parts raw material：
120~200g modified polyurethane prepolymers, 30~50g plasticizer, 0.5~0.8g are bis-（Dimethylamino ethyl）Ether is catalyzed
Agent.
The waterglass is sodium silicate or potassium water glass.
The silane coupling agent is silane coupling A -171, silane coupling agent 1110, silane coupling agent 1120, silane
It is one or more in coupling agent KH-560.
The surfactant is one or more in hard bubble silicone oil SD-502, peregal, polyoxyethylene stearic acid ester.
The modified polyurethane prepolymer be dehydration polypropylene oxide triol and dialkyl polydimethylsiloxane with
Polysiloxane-polyether block polyurethane fluid sealant performed polymer made of methyl diphenylene diisocyanate is alternately condensed.
Described each weight of material part is 40~60 parts of dehydration polypropylene oxide triols, 64~90 parts of diphenyl methanes two
Isocyanates, 40~60 parts of dialkyl polydimethylsiloxanes, 4~6 parts of toluene, 0.6~0.8 part of dibutyl tin laurate.
The plasticizer is dibutyl phthalate.
A kind of preparation method of the polyurethane waterglass composite grouting material, the specific steps are：
（1）Water intaking glass, polypropylene oxide triol, neopentyl glycol are fitted into vacuum dehydration in autoclave and handle 2~3h, cooling
Obtain pretreatment fluid；
（2）Dibutyl tin laurate, silane coupling agent, surfactant are added into pretreatment fluid and stirs 20~30min, obtains
Component A；
（3）It takes polypropylene oxide triol vacuum dehydration to handle 2~3h, is cooled to 60~70 DEG C, obtains dehydration polyoxygenated third
Alkene triol；
（4）Dehydration polypropylene oxide triol, methyl diphenylene diisocyanate are taken, and is heated to 70~80 DEG C, heat preservation is anti-
6~8h is answered, dialkyl polydimethylsiloxane, toluene, dibutyl tin laurate are added after being cooled to 60~70 DEG C, and heat
To 70~80 DEG C, insulation reaction 3~4h, cooling modified polyurethane prepolymer；
（5）Take modified polyurethane prepolymer, plasticizer, double（Dimethylamino ethyl）Ether catalyst stirs 20~30min, obtains B groups
Point；
（6）By component A and B component in mass ratio 1：1~1.5：1 is mixed 60~120s, obtains the compound filling of polyurethane waterglass
Pulp material.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention has lower viscosity and surface tension using silane coupling agent, and wetting capacity is strong, can be rapidly in construction table
Face drawout, infiltration rock surface gap, while the inorganic group in silane coupling agent can be sent out with the oxide of fracture faces
Raw reaction generates stable silicon oxygen bond, and organic group and NCO reaction formings are on organic macromolecule, to increase grouting material
Bond strength and infiltration for construction surface, while catalytic component being promoted to be dispersed in waterglass, avoids phase
Separation；
（2）The present invention is modified polyurethane using dialkyl polydimethylsiloxane, by controlling polypropylene oxide triol
Replace condensation reaction with dialkyl polydimethylsiloxane and methyl diphenylene diisocyanate, designs and prepares a kind of poly- silicon
Oxygen alkane-polyether block base polyurethane prepolymer for use as, moisturecuring object have preferably low temperature resistant and resistance to relative to polyether-polyurethane solidfied material
The performances such as heat, and the extent of reaction of waterglass can be significantly improved, and then increase the pressure resistance of composite grouting material induration
Degree shortens the presetting period；
（3）Composite grouting material of the present invention does not contain volatile solvent, and concrete castability is good, permeability is strong, and with good
Compression strength, ground/gravel structure can be played in time filling, reinforce, waterproofing and leakage-stopping the effects that, be suitable for bridge, subway,
The waterproofing and leakage-stoppings of the slight cracks such as dam, rock stratum, bay, civil air defense constructions and installations and ground it is firm impervious.
Specific implementation mode
150~200g waterglass, 30~40g polypropylene oxide triols, 10~15g neopentyl glycols is taken to be packed into reaction under high pressure
In kettle, it is 100~1000Pa to seal and be evacuated in reaction kettle vacuum degree, be again heated to 100~120 DEG C of dehydrations 2~
3h is cooled to room temperature to obtain pretreatment fluid, and 0.9~1.5g dibutyl tin laurates are added into pretreatment fluid, and 1~2g silane is even
Join agent, 0.3~0.5g surfactants stir 20~30min with 300~400r/min, obtain component A, take polypropylene oxide three
Alcohol is fitted into autoclave, and it is 100~1000Pa to seal and be evacuated to vacuum degree in reaction kettle, is again heated to 100~120
DEG C 2~3h of dehydration, is cooled to 60~70 DEG C, obtains dehydration polypropylene oxide triol, take 40~60g dehydration polyoxies
Change propylene triol, 64~90g methyl diphenylene diisocyanates, and be heated to 70~80 DEG C, 6~8h of insulation reaction is cooled to
40~60g dialkyl polydimethylsiloxanes, 4~6g toluene, 0.6~0.8g di lauric dibutyls are added after 60~70 DEG C
Tin, and be heated to 70~80 DEG C, 3~4h of insulation reaction is cooled to room temperature discharging, obtains modified polyurethane prepolymer, take 120~
200g modified polyurethane prepolymers, 30~50g plasticizer, 0.5~0.8g are bis-（Dimethylamino ethyl）Ether catalyst, with 200~
300r/min stirs 20~30min, B component is obtained, by component A and B component in mass ratio 1：1~1.5：1 be mixed 60~
120s obtains polyurethane waterglass composite grouting material.
Example 1
150g waterglass, 30g polypropylene oxide triols, 10g neopentyl glycols is taken to be fitted into autoclave, seal and vacuumize
Vacuum degree is 100Pa in reaction kettle, is again heated to 100 DEG C of dehydration 2h, is cooled to room temperature to obtain pretreatment fluid, to pretreatment
0.9g dibutyl tin laurates, 1g silane coupling agents are added in liquid, 0.3g surfactants stir 20min with 300r/min,
Component A is obtained, polypropylene oxide triol is taken to be fitted into autoclave, it is 100Pa to seal and be evacuated to vacuum degree in reaction kettle,
100 DEG C of dehydration 2h are again heated to, are cooled to 60 DEG C, obtain dehydration polypropylene oxide triol, take 40g dehydration polyoxies
Change propylene triol, 64g methyl diphenylene diisocyanates, and be heated to 70 DEG C, insulation reaction 6h is added after being cooled to 60 DEG C
40g dialkyl polydimethylsiloxanes, 4g toluene, 0.6g dibutyl tin laurates, and 70 DEG C are heated to, insulation reaction 3h,
It is cooled to room temperature discharging, obtains modified polyurethane prepolymer, takes 120g modified polyurethane prepolymers, 30g plasticizer, 0.5g is bis-（Two
Methylamino ethyl）Ether catalyst stirs 20min with 200r/min, B component is obtained, by component A and B component in mass ratio 1：1 mixing
60s is stirred, polyurethane waterglass composite grouting material is obtained.
Example 2
180g waterglass, 35g polypropylene oxide triols, 12g neopentyl glycols is taken to be fitted into autoclave, seal and vacuumize
Vacuum degree is 500Pa in reaction kettle, is again heated to 110 DEG C of dehydration 2h, is cooled to room temperature to obtain pretreatment fluid, to pretreatment
1.2g dibutyl tin laurates, 1g silane coupling agents are added in liquid, 0.4g surfactants stir 25min with 350r/min,
Component A is obtained, polypropylene oxide triol is taken to be fitted into autoclave, it is 500Pa to seal and be evacuated to vacuum degree in reaction kettle,
110 DEG C of dehydration 2h are again heated to, are cooled to 65 DEG C, obtain dehydration polypropylene oxide triol, take 50g dehydration polyoxies
Change propylene triol, 80g methyl diphenylene diisocyanates, and be heated to 75 DEG C, insulation reaction 7h is added after being cooled to 65 DEG C
50g dialkyl polydimethylsiloxanes, 5g toluene, 0.7g dibutyl tin laurates, and 75 DEG C are heated to, insulation reaction 3h,
It is cooled to room temperature discharging, obtains modified polyurethane prepolymer, takes 180g modified polyurethane prepolymers, 40g plasticizer, 0.6g is bis-（Two
Methylamino ethyl）Ether catalyst stirs 25min with 250r/min, B component is obtained, by component A and B component in mass ratio 1.2：1 is mixed
Stirring 90s is closed, polyurethane waterglass composite grouting material is obtained.
Example 3
200g waterglass, 40g polypropylene oxide triols, 15g neopentyl glycols is taken to be fitted into autoclave, seal and vacuumize
Vacuum degree is 1000Pa in reaction kettle, is again heated to 120 DEG C of dehydration 3h, is cooled to room temperature to obtain pretreatment fluid, to pre- place
It manages and 1.5g dibutyl tin laurates is added in liquid, 2g silane coupling agents, 0.5g surfactants are stirred with 400r/min
30min obtains component A, and polypropylene oxide triol is taken to be fitted into autoclave, seals and is evacuated to vacuum degree in reaction kettle and is
1000Pa is again heated to 120 DEG C of dehydration 3h, is cooled to 70 DEG C, obtains dehydration polypropylene oxide triol, 60g is taken to be dehydrated
Polypropylene oxide triol, 90g methyl diphenylene diisocyanates are handled, and is heated to 80 DEG C, insulation reaction 8h is cooled to 70 DEG C
60g dialkyl polydimethylsiloxanes, 6g toluene, 0.8g dibutyl tin laurates are added afterwards, and is heated to 80 DEG C, heat preservation is anti-
4h is answered, discharging is cooled to room temperature, obtains modified polyurethane prepolymer, takes 200g modified polyurethane prepolymers, 50g plasticizer, 0.8g
It is double（Dimethylamino ethyl）Ether catalyst stirs 30min with 300r/min, obtains B component, in mass ratio with B component by component A
1.5：1 is mixed 120s, obtains polyurethane waterglass composite grouting material.
Reference examples：The polyurethane grouting material of Dongguan company production.
The polyurethane grouting material of example and reference examples is detected, specific detection is as follows：
Test the hardening time of the mechanical properties such as its tensile strength and elongation at break and polyurethane grouting material.
Specific testing result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Tensile strength/MPa | 2.36 | 2.43 | 2.51 | 1.76 |
| Elongation at break/% | 558.1 | 531.2 | 555.3 | 417.4 |
| Hardening time/min | 10 | 8 | 7 | 15 |
The polyurethane waterglass composite grouting material that as shown in Table 1 prepared by the present invention, concrete castability is good, permeability is strong, and has
Good compression strength, hardening time is short, has broad application prospects.
Claims (8)
1. a kind of polyurethane waterglass composite grouting material, which is characterized in that the composite grouting material is by component A and B component
In mass ratio 1：1~1.5：1 composition, wherein：Component A includes following weight parts raw material：
150~200 parts of waterglass, 30~40 parts of polypropylene oxide triols, 10~15 parts of neopentyl glycols, 0.9~1.5 part of two bay
Sour dibutyl tin, 1~2 part of silane coupling agent, 0.3~0.5 part of surfactant；
B component includes following weight parts raw material：120~200g modified polyurethane prepolymers, 30~50g plasticizer, 0.5~0.8g
It is double（Dimethylamino ethyl）Ether catalyst.
2. a kind of polyurethane waterglass composite grouting material as described in claim 1, which is characterized in that the waterglass is sodium
Waterglass or potassium water glass.
3. a kind of polyurethane waterglass composite grouting material as described in claim 1, which is characterized in that the silane coupling agent
For in silane coupling A -171, silane coupling agent 1110, silane coupling agent 1120, silane coupling agent KH-560 one kind or
It is a variety of.
4. a kind of polyurethane waterglass composite grouting material as described in claim 1, which is characterized in that the surfactant
It is one or more in hard bubble silicone oil SD-502, peregal, polyoxyethylene stearic acid ester.
5. a kind of polyurethane waterglass composite grouting material as described in claim 1, which is characterized in that the modified polyurethane
Performed polymer is that dehydration polypropylene oxide triol and dialkyl polydimethylsiloxane are handed over methyl diphenylene diisocyanate
For polysiloxane-polyether block polyurethane fluid sealant performed polymer made of condensation.
6. a kind of polyurethane waterglass composite grouting material as claimed in claim 5, which is characterized in that each weight of material
Part is 40~60 parts of dehydration polypropylene oxide triols, 64~90 parts of methyl diphenylene diisocyanates, 40~60 parts of dihydroxies
Base dimethyl silicone polymer, 4~6 parts of toluene, 0.6~0.8 part of dibutyl tin laurate.
7. a kind of polyurethane waterglass composite grouting material as described in claim 1, which is characterized in that the plasticizer is neighbour
Dibatyl phithalate.
8. a kind of preparation method of polyurethane waterglass composite grouting material as described in claim 1~7 any one, special
Sign is, the specific steps are：
（1）Water intaking glass, polypropylene oxide triol, neopentyl glycol are fitted into vacuum dehydration in autoclave and handle 2~3h, cooling
Obtain pretreatment fluid；
（2）Dibutyl tin laurate, silane coupling agent, surfactant are added into pretreatment fluid and stirs 20~30min, obtains
Component A；
（3）It takes polypropylene oxide triol vacuum dehydration to handle 2~3h, is cooled to 60~70 DEG C, obtains dehydration polyoxygenated third
Alkene triol；
（4）Dehydration polypropylene oxide triol, methyl diphenylene diisocyanate are taken, and is heated to 70~80 DEG C, heat preservation is anti-
6~8h is answered, dialkyl polydimethylsiloxane, toluene, dibutyl tin laurate are added after being cooled to 60~70 DEG C, and heat
To 70~80 DEG C, insulation reaction 3~4h, cooling modified polyurethane prepolymer；
（5）Take modified polyurethane prepolymer, plasticizer, double（Dimethylamino ethyl）Ether catalyst stirs 20~30min, obtains B groups
Point；
（6）By component A and B component in mass ratio 1：1~1.5：1 is mixed 60~120s, obtains the compound filling of polyurethane waterglass
Pulp material.
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Cited By (6)
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| CN110055026A (en) * | 2019-04-25 | 2019-07-26 | 王鹏 | A kind of gap-grouting material and preparation method thereof |
| CN110078879A (en) * | 2019-04-22 | 2019-08-02 | 山东科技大学 | A kind of mining silicon-based polymer reinforcement material of high-intensity coal and preparation method thereof |
| CN111234508A (en) * | 2020-03-26 | 2020-06-05 | 中煤科工集团重庆研究院有限公司 | Reactive grouting reinforcement material with low smoke toxicity and high mechanical strength and preparation method thereof |
| CN113956648A (en) * | 2021-11-26 | 2022-01-21 | 山西凝固力新型材料股份有限公司 | High-strength silicate/polyurethane urea-based composite reinforcing material and preparation method thereof |
| CN113980226A (en) * | 2021-10-09 | 2022-01-28 | 山西潞安晋安矿业工程有限责任公司 | Low-temperature quick-setting silicate modified polyurethane reinforcing material |
| CN115109228A (en) * | 2022-03-30 | 2022-09-27 | 万华节能科技(烟台)有限公司 | Silicate modified polyurethane material with high storage stability for coal mine reinforced coal rock mass |
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