CN106186894A - A kind of voltage sensitive sensor cement-base composite material - Google Patents
A kind of voltage sensitive sensor cement-base composite material Download PDFInfo
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- CN106186894A CN106186894A CN201610593205.4A CN201610593205A CN106186894A CN 106186894 A CN106186894 A CN 106186894A CN 201610593205 A CN201610593205 A CN 201610593205A CN 106186894 A CN106186894 A CN 106186894A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Ceramic Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Ceramic Products (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of voltage sensitive sensor cement-base composite material, be made up of following raw material: cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, silicon carbide fibre, glass fibre, polycarboxylate water-reducer, triethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone amide foam stabilizer, emulsified silicone oil defoamer, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polyaluminium sulfate flocculation agent, 701 powder hardening agents, Biformyl, hydrogen peroxide, water.The voltage sensitive sensor cement-base composite material of the present invention has comprcssive strength, rupture strength greatly, answers force-sensing ability high, good stability, sensitivity advantages of higher.
Description
[technical field]
The invention belongs to technical field of electronic components and technical field of material, be specifically related to a kind of voltage sensitive sensor water
Cement-based composite material.
[background technology]
Concrete is widely used in industry and civil buildings, road and science of bridge building, airport, harbour and hydraulic engineering.Concrete
Construction, particularly super-long span bridges, emphasis hydraulic engineering, emphasis stadiums, Offshore Platform, nuclear power station work
The civil infrastructure such as journey and high speed railway construction is generally up to many decades projected life, even goes up a century.The most prolonged and repeated
Bear the long-term of the natural environment such as various load, acid rain to corrode and material self deterioration, inevitably lead to civil engineering
Structural damage, may cause outburst disaster, causes safely loss greatly to the people's lives and property.Carried out all for this
Such as engineering structure Population Health monitoring key technology research, material safety military service behavior and new function material preparation basis and property
The research of related fields can be regulated and controled.Great civil engineering structure is implemented health monitoring and has been become civil engineering with load control technology
The hot research problem in field, is future economy construction and social development problem in the urgent need to address.
High-performance smart sensor is the important component part of civil infrastructure intellectual monitoring and Gernral Check-up.In recent years
Coming, the sensor as civil engineering structure Long Period Health Monitoring mainly has Fibre Optical Sensor and the pressure-sensitive biography of cement-base composite material
Sensor, although Fibre Optical Sensor durability and stability are preferable, but price is high, it is difficult to large-scale promotion uses.And cement
Based composites voltage sensitive sensor is simple owing to burying technique underground, and good endurance, good with the civil engineering structure compatibility, price is low
Advantage, becomes the hot subject of civil engineering structure monitoring and Gernral Check-up field.
With the cement (mortar or concrete) the cement-base composite material voltage sensitive sensor as matrix, composite portion is conduction
Phase, the change being made by electrical properties reflects the composite of its change of mechanical property.Prior art is to including carbon fiber, receiving
Rice carbon black, the electric conductivity such as CNT has carried out the trial of different angles.1993, D.D.L.Chung professor and her class
Topic group proposes the concept of sensitive concrete (Smart concrete).1996, Li Zhuoqiu etc. studied and shows, carbon fiber water
Cement-based composite material in gradually pressurization until during Po Huaiing, under resistivity therebetween presents significantly with the increase of compressive stress
Fall, smooth transition and rise rapidly three phases, the these three stage respectively with elasticity, plasticity and the collapse three of carbon fiber reinforced concrete
The individual stage is corresponding.2000, Ou Jinping etc. proposed that exploitation small size, precision height, favorable repeatability, cost be low, durability
Well, technique simple standard Carbon Fiber Cement sensor is buried underground.It is embedded in concrete component formation intelligent concrete
Structural system, has that good endurance, cost be low and the advantage such as the concrete compatibility is good.
The nanomaterial-filled material that prior art discloses for cement matrix has: Nano-meter SiO_22, Nano-meter CaCO33, nanometer
TiO2, CNT, nano carbon black and nanometer Fe2O3Deng.Disclose dispersed and right in cement matrix of nano material
Cement matrix microstructure and the improvement of macro property.
Newcomer's Graphene of carbon family, is the allotrope of the carbon of the sp2 hydridization of a kind of two dimension, is the thinnest material
The material of material-monoatomic thickness.Graphene has the electric property of excellence, thermal property, the specific surface area of superelevation, Young mould
The character of a series of excellences such as amount and fracture strength.Graphene, can be notable as a kind of high performance polymer packing material
Improve the electric conductivity of polymer, heat conductivity and mechanical performance.
Application No. 201310233476.5, entitled " a kind of graphene oxide cement-base composite material strain gauge "
Patent document in disclose a kind of Structural Engineering monitoring strain gauge, this sensor element is to add 0.02% oxidation stone
Prepared by the graphene oxide cement-base composite material of ink alkene.But, although Graphene has a strongest conductive capability, but oxygen
Functionalized graphene is almost without conductive capability, and as the derivant of Graphene, substantial amounts of oxygen-containing functional group is contained on surface, and pi-electron is tied
Structure is destroyed, and conductive capability is almost lost.Only adding under adding the graphene oxide of 0.02%, the conductive capability of Behavior of Hardened Cement Paste improves
Seldom, graphene oxide cement-base composite material cannot play the effect of strain gauge.
Patent No. ZL200710072474.7, the patent of invention disclosure of entitled " a kind of pressure-sensitive cement-base composite material "
One be used for solving piezoelectric media effect sensitivity low and affected greatly by humidity, matrix polarization easily affects electrical signal and tests
Etc. the pressure-sensitive cement-base composite material of defect, this material be by containing 1%-80% function ingredients (nikel powder, carbon fiber, carbon black,
The mixture of one or more in graphite, slag) and the composite of cement-based material composition, but be used for preparing cement based intelligence
Can material time complex process or addition is big, cost is high or seriously constrains cement based intelligence with the defect of cement matrix poor compatibility
The application of energy material.The present inventor needs to provide a kind of conductive compositions to cement matrix through observing, study, analyze discovery for a long time
The technical scheme of the technology that kind, dispersibility optimize the further following deficiency to overcome prior art and exist: (1) carborundum is fine
Dimension bad dispersibility in cement matrix, implant is bad with the matrix compatibility, initial electrical resistivity with answer force-sensing ability discrete
High defect；(2) Sic nanotube with very high length-diameter ratio is easily wound around in cement matrix, and hydrophobic surface chemistry is special
Property causes the bad dispersibility in cement matrix, and the homogeneity ultimately resulting in microstructure and properties is poor；(3) Nano-meter SiO_22Or receive
Rice CaCO3Although to improving cement matrix microstructure and mechanical property has significant contribution, but cement based can not be played and is combined
Material functional, the agglomeration of nano material is likely to cause matrix strength to decline simultaneously.
[summary of the invention]
The present invention provides a kind of voltage sensitive sensor cement-base composite material, compound to solve existing voltage sensitive sensor cement based
The problems such as material preparation process is complicated, cost is high, answer force-sensing ability and sensitivity low, poor stability.The pressure-sensitive biography of the present invention
Sensor cement-base composite material has comprcssive strength, rupture strength greatly, answers force-sensing ability high, and good stability is highly sensitive
Etc. advantage.
For solve above technical problem, the present invention by the following technical solutions:
A kind of voltage sensitive sensor cement-base composite material, in units of weight, is made up of following raw material: cement 100-200 part,
Slag powders 8-14 part, coal ash powder 8-12 part, bentonite 6-10 part, Two-dimensional Carbon material 18-24 part, silicon carbide fibre 10-15 part, glass
Glass fiber 6-10 part, polycarboxylate water-reducer 0.4-0.6 part, triethylene diamine six water catalyst 0.4-0.6 part, azo two formyl
Amine foaming agent 0.5-0.7 part, esters of acrylic acid foaming control agent foaming control agent 0.4-0.8 part, silicone amide foam stabilizer 0.2-
0.4 part, emulsified silicone oil defoamer 0.2-0.4 part, hexenyl bis-stearamides dispersant 0.5-0.8 part, cumyl peroxide
Cross-linking agent 0.6-0.9 part, polyaluminium sulfate flocculation agent 0.3-0.5 part, 701 powder hardening agent 0.1-0.2 parts, Biformyl 15-20 part,
Hydrogen peroxide 20-30 part, water 500-800 part；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 4-10h that concentration is 10%-14%, then rinsing to pH with water is 6.8-7.2, makes
Silicon carbide fibre must be acidified；
S2: be 100-at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 10-30min under 400r/min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 140-180 DEG C in temperature, and rotating speed is stirring 3.5-5h under 90-140r/min, prepares bubble
Foam liquid；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 85-92 DEG C in temperature, and rotating speed is stirring 2.5-3.5h under 150-180r/min, dress
Mould, dries to water content≤4%, prepared voltage sensitive sensor cement-base composite material.
Further, the mesh number of described slag powders and coal ash powder is 200-400.
Further, described bentonite is nanoscale bentonite.
Further, described Two-dimensional Carbon material is Graphene.
Further, a length of 0.1-2.8mm of described silicon carbide fibre.
Further, a length of 0.4-2.5mm of described glass fibre.
Further, the concentration of described hydrogen peroxide is 28%-32%.
The method have the advantages that
(1) the voltage sensitive sensor cement-base composite material comprcssive strength of the present invention reaches more than 123.56MPa, and rupture strength reaches
To more than 26.78, adhesive force is that sensitivity reaches more than 2.32%/MPa, and resistivity reaches less than 43.12, and the coefficient of variation reaches
Less than 0.025, prior art is compared, and it is strong that the voltage sensitive sensor cement-base composite material of the present invention has comprcssive strength, anti-folding
Degree is big, answers force-sensing ability high, good stability, sensitivity advantages of higher；
(2) it is steady that the voltage sensitive sensor made of voltage sensitive sensor cement-base composite material using the present invention has initial electrical resistivity
Determine, answer the advantages such as force-sensing ability height, transducer sensitivity height, good stability；
(3) use slag powders, coal ash powder as the raw material of the voltage sensitive sensor cement-base composite material of the present invention, not only may be used
To reduce production cost, and it can be the effectively process offer new way of slag powders, coal ash powder.
[detailed description of the invention]
For ease of being more fully understood that the present invention, being illustrated by following example, these embodiments belong to the protection of the present invention
Scope, but it is not intended to protection scope of the present invention.
In an embodiment, described voltage sensitive sensor cement-base composite material, in units of weight, by following raw material system
Become: cement 100-200 part, slag powders 8-14 part, coal ash powder 8-12 part, bentonite 6-10 part, Two-dimensional Carbon material 18-24 part, carbon
SiClx fiber 10-15 part, glass fibre 6-10 part, polycarboxylate water-reducer 0.4-0.6 part, triethylene diamine six water catalyst
0.4-0.6 part, azodicarbonamide foaming agent 0.5-0.7 part, esters of acrylic acid foaming control agent foaming control agent 0.4-0.8
Part, silicone amide foam stabilizer 0.2-0.4 part, emulsified silicone oil defoamer 0.2-0.4 part, hexenyl bis-stearamides dispersant 0.5-
0.8 part, cumyl peroxide cross-linking agent 0.6-0.9 part, polyaluminium sulfate flocculation agent 0.3-0.5 part, 701 powder hardening agent 0.1-
0.2 part, Biformyl 15-20 part, hydrogen peroxide 20-30 part, water 500-800 part；
The mesh number of described slag powders and coal ash powder is 200-400；
Described bentonite is nanoscale bentonite；
Described Two-dimensional Carbon material is Graphene；
The a length of 0.1-2.8mm of described silicon carbide fibre；
The a length of 0.4-2.5mm of described glass fibre；
The concentration of described hydrogen peroxide is 28%-32%；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 4-10h that concentration is 10%-14%, then rinsing to pH with water is 6.8-7.2, makes
Silicon carbide fibre must be acidified；
S2: be 100-at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 10-30min under 400r/min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 140-180 DEG C in temperature, and rotating speed is stirring 3.5-5h under 90-140r/min, prepares bubble
Foam liquid；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 85-92 DEG C in temperature, and rotating speed is stirring 2.5-3.5h under 150-180r/min, dress
Mould, dries to water content≤4%, prepared voltage sensitive sensor cement-base composite material.
Embodiment 1
A kind of voltage sensitive sensor cement-base composite material, in units of weight, is made up of following raw material: cement 150 parts, slag
12 parts of powder, coal ash powder 10 parts, bentonite 8 parts, Two-dimensional Carbon material 22 parts, silicon carbide fibre 12 parts, glass fibre 8 parts, polycarboxylic acids
Water reducer 0.5 part, triethylene diamine six water catalyst 0.5 part, azodicarbonamide foaming agent 0.6 part, esters of acrylic acid are sent out
Bubble regulator foaming control agent 0.6 part, silicone amide foam stabilizer 0.3 part, emulsified silicone oil defoamer 0.3 part, hexenyl are double stearic
Amide dispersant 0.6 part, cumyl peroxide cross-linking agent 0.8 part, polyaluminium sulfate flocculation agent 0.4 part, 701 powder hardening agents
0.1 part, Biformyl 18 parts, hydrogen peroxide 25 parts, 650 parts of water；
The mesh number of described slag powders and coal ash powder is 200-400；
Described bentonite is nanoscale bentonite；
Described Two-dimensional Carbon material is Graphene；
The a length of 0.1-2.8mm of described silicon carbide fibre；
The a length of 0.4-2.5mm of described glass fibre；
The concentration of described hydrogen peroxide is 30%；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 7h that concentration is 12%, then rinsing to pH with water is 7, prepares acidifying carborundum fine
Dimension；
S2: be 300r/ at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 20min under min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 160 DEG C in temperature, and rotating speed is stirring 4.5h under 120r/min, prepares foam solution；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 88 DEG C in temperature, and rotating speed is stirring 3h under 160r/min, die-filling, dries to water content
It is 4%, prepared voltage sensitive sensor cement-base composite material.
Embodiment 2
A kind of voltage sensitive sensor cement-base composite material, in units of weight, is made up of following raw material: cement 100 parts, slag
8 parts of powder, coal ash powder 8 parts, bentonite 6 parts, Two-dimensional Carbon material 18 parts, silicon carbide fibre 10 parts, glass fibre 6 parts, polycarboxylic acids subtract
0.4 part of water preparation, triethylene diamine six water catalyst 0.4 part, azodicarbonamide foaming agent 0.5 part, esters of acrylic acid foam
Regulator foaming control agent 0.4 part, silicone amide foam stabilizer 0.2 part, emulsified silicone oil defoamer 0.2 part, hexenyl stearic bicine diester
Amine dispersant 0.5 part, cumyl peroxide cross-linking agent 0.6 part, polyaluminium sulfate flocculation agent 0.3 part, 701 powder hardening agents 0.1
Part, Biformyl 15 parts, hydrogen peroxide 20 parts, 500 parts of water；
The mesh number of described slag powders and coal ash powder is 200-400；
Described bentonite is nanoscale bentonite；
Described Two-dimensional Carbon material is Graphene；
The a length of 0.1-2.8mm of described silicon carbide fibre；
The a length of 0.4-2.5mm of described glass fibre；
The concentration of described hydrogen peroxide is 28%；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 10h that concentration is 10%, then rinsing to pH with water is 6.8, prepares acidifying carbonization
Silica fibre；
S2: be 100r/ at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 30min under min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 140 DEG C in temperature, and rotating speed is stirring 5h under 90r/min, prepares foam solution；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 85 DEG C in temperature, and rotating speed is stirring 3.5h under 150r/min, die-filling, dries to aqueous
Amount is 3%, prepared voltage sensitive sensor cement-base composite material.
Embodiment 3
A kind of voltage sensitive sensor cement-base composite material, in units of weight, is made up of following raw material: cement 200 parts, slag
14 parts of powder, coal ash powder 12 parts, bentonite 10 parts, Two-dimensional Carbon material 24 parts, silicon carbide fibre 15 parts, glass fibre 10 parts, poly-carboxylic
Acid water reducer 0.6 part, triethylene diamine six water catalyst 0.6 part, azodicarbonamide foaming agent 0.7 part, esters of acrylic acid
Foaming control agent foaming control agent 0.8 part, silicone amide foam stabilizer 0.4 part, emulsified silicone oil defoamer 0.4 part, hexenyl are double hard
Acyl amine dispersant 0.8 part, cumyl peroxide cross-linking agent 0.9 part, polyaluminium sulfate flocculation agent 0.5 part, 701 powder hardening agents
0.2 part, Biformyl 20 parts, hydrogen peroxide 30 parts, 800 parts of water；
The mesh number of described slag powders and coal ash powder is 200-400；
Described bentonite is nanoscale bentonite；
Described Two-dimensional Carbon material is Graphene；
The a length of 0.1-2.8mm of described silicon carbide fibre；
The a length of 0.4-2.5mm of described glass fibre；
The concentration of described hydrogen peroxide is 32%；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 4h that concentration is 14%, then rinsing to pH with water is 7.2, prepares acidifying carborundum
Fiber；
S2: be 400r/ at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 10min under min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 180 DEG C in temperature, and rotating speed is stirring 3.5h under 140r/min, prepares foam solution；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 92 DEG C in temperature, and rotating speed is stirring 2.5h under 180r/min, die-filling, dries to aqueous
Amount is 2%, prepared voltage sensitive sensor cement-base composite material.
The performance of the voltage sensitive sensor cement-base composite material that detection embodiment 1-3 prepares, result is as shown in the table.
| Embodiment | Comprcssive strength (MPa) | Rupture strength (MPa) | Sensitivity (%/MPa) | Resistivity | The coefficient of variation (%) |
| 1 | 128.34 | 29.11 | 2.78 | 41.23 | 0.021 |
| 2 | 123.56 | 26.78 | 2.32 | 43.12 | 0.025 |
| 3 | 134.91 | 31.36 | 3.37 | 39.45 | 0.018 |
As seen from the above table: the voltage sensitive sensor cement-base composite material comprcssive strength of the present invention reach 123.56MPa with
On, rupture strength reaches more than 26.78, and adhesive force is that sensitivity reaches more than 2.32%/MPa, resistivity reach 43.12 with
Under, the coefficient of variation reaches less than 0.025, illustrates that the voltage sensitive sensor cement-base composite material performance of the present invention is excellent.
Above content it cannot be assumed that the present invention be embodied as be confined to these explanation, technology belonging to the present invention is led
For the those of ordinary skill in territory, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace,
All should be considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (7)
1. a voltage sensitive sensor cement-base composite material, it is characterised in that in units of weight, is made up of following raw material:
Cement 100-200 part, slag powders 8-14 part, coal ash powder 8-12 part, bentonite 6-10 part, Two-dimensional Carbon material 18-24 part, carborundum
Fiber 10-15 part, glass fibre 6-10 part, polycarboxylate water-reducer 0.4-0.6 part, triethylene diamine six water catalyst 0.4-
0.6 part, azodicarbonamide foaming agent 0.5-0.7 part, esters of acrylic acid foaming control agent foaming control agent 0.4-0.8 part, silicon
Keto-amide foam stabilizer 0.2-0.4 part, emulsified silicone oil defoamer 0.2-0.4 part, hexenyl bis-stearamides dispersant 0.5-0.8
Part, cumyl peroxide cross-linking agent 0.6-0.9 part, polyaluminium sulfate flocculation agent 0.3-0.5 part, 701 powder hardening agent 0.1-0.2
Part, Biformyl 15-20 part, hydrogen peroxide 20-30 part, water 500-800 part；
The preparation method of described voltage sensitive sensor cement-base composite material, comprises the following steps:
S1: with the soak with hydrochloric acid silicon carbide fibre 4-10h that concentration is 10%-14%, then rinsing to pH with water is 6.8-7.2, makes
Silicon carbide fibre must be acidified；
S2: be 100-at rotating speed by cement, slag powders, coal ash powder, bentonite, Two-dimensional Carbon material, Biformyl, hydrogen peroxide, water
Stir 10-30min under 400r/min, prepare slurry；
S3: by step S1 prepare acidifying silicon carbide fibre, step S2 prepare slurry, glass fibre, polycarboxylate water-reducer, three
Ethylene diamine six water catalyst, azodicarbonamide foaming agent, esters of acrylic acid foaming control agent foaming control agent, silicone acyl
Amine foam stabilizer, emulsified silicone oil defoamer are 140-180 DEG C in temperature, and rotating speed is stirring 3.5-5h under 90-140r/min, prepares bubble
Foam liquid；
S4: by foam solution prepared for step S3, hexenyl bis-stearamides dispersant, cumyl peroxide cross-linking agent, polymerization
Aluminum sulfate flocculation agent, 701 powder hardening agents are 85-92 DEG C in temperature, and rotating speed is stirring 2.5-3.5h under 150-180r/min, dress
Mould, dries to water content≤4%, prepared voltage sensitive sensor cement-base composite material.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that described slag powders and coal ash
The mesh number of powder is 200-400.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that described bentonite is nanometer
Level bentonite.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that described Two-dimensional Carbon material is
Graphene.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that described silicon carbide fibre
A length of 0.1-2.8mm.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that the length of described glass fibre
Degree is 0.4-2.5mm.
Voltage sensitive sensor cement-base composite material the most according to claim 1, it is characterised in that the concentration of described hydrogen peroxide
For 28%-32%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108101412A (en) * | 2017-12-17 | 2018-06-01 | 长沙无道工业设计有限公司 | Concrete admixture and preparation method thereof |
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| CN104446176A (en) * | 2014-08-25 | 2015-03-25 | 北京建筑大学 | Cement-based composite material and pressure sensor made of same |
| CN105503255A (en) * | 2015-12-15 | 2016-04-20 | 苏州万盛混凝土有限公司 | Preparation method of high-strength pressure-sensitive foam concrete |
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| CN103274646A (en) * | 2013-06-13 | 2013-09-04 | 大连海事大学 | Stress sensor made of graphene oxide cement-based composite material |
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Application publication date: 20161207 |