CN103992051B - A kind of high-strength conductive for conducting concrete gathers materials and preparation method thereof - Google Patents
A kind of high-strength conductive for conducting concrete gathers materials and preparation method thereof Download PDFInfo
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- CN103992051B CN103992051B CN201410233628.6A CN201410233628A CN103992051B CN 103992051 B CN103992051 B CN 103992051B CN 201410233628 A CN201410233628 A CN 201410233628A CN 103992051 B CN103992051 B CN 103992051B
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Abstract
The invention discloses a kind of high-strength conductive for conducting concrete to gather materials and preparation method thereof, it is characterized in that, described conduction is gathered materials by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer four kinds of components, the mass percent shared by each component is: clay 70 ~ 93%, iron powder 1 ~ 6%, Fe
3o
41 ~ 10%, polyacrylic ester-styrol copolymer 5 ~ 14%, described preparation method comprises: the 1) pre-treatment of clay and the synthesis of polyacrylic ester-styrol copolymer; 2) weighing of each component; 3) adopt dry-pressing formed method, the compound of each component is pressed into column base substrate; 4) base substrate is sent in reducing atmosphere stove calcine, obtain described high-strength conductive and gather materials.Conduction prepared by the present invention gather materials have cost low, conduct electricity very well and the advantage such as good mechanical performance, be applied to conducting concrete, make concrete show good conductivity and mechanical property.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of high-strength conductive for conducting concrete and gather materials and preparation method thereof.
Background technology
Conducting concrete refers to and in normal concrete, mixes amount of conductive constituent materials and a kind of heterogeneous composite material formed.Conducting concrete had both had the feature of structured material; again there is electroconductibility; make conducting concrete while as a kind of structured material, play an important role in electrician, electromagnetic interference shield, industrial electrostatic prevention, power equipment earth work, reinforcing bar galvanic protection, building ground heating and road surface deicing snow melt etc.
Conducting concrete to contact with each other formation conductive network mainly due to dispersion conductive component material in the base, thus has electroconductibility.At present, carbon fiber, graphite and metal-powder etc. are generally for the electro-conductive material of conducting concrete both at home and abroad.But the electro-conductive material such as carbon fiber and steel fiber cost is higher, and carry out dispersed very difficult in Behavior of Hardened Cement Paste, effectively can not form conductive network, seriously reduce the conductivity of conducting concrete.The carbon series conductive such as graphite and carbon black material due to self-strength low, and water-intake rate is high, obviously can reduce the mechanical property of conducting concrete.Therefore, prepare a kind of conductivity excellent, do not reduce conducting concrete mechanical property and lower-cost conduction to gather materials be urgent problem.
Summary of the invention
A kind of high-strength conductive for conducting concrete is the object of the present invention is to provide to gather materials and preparation method thereof.This conduction is gathered materials and is applied to concrete, the conductivity of energy Concrete Structure, and ensure concrete intensity.Adopt described method to prepare conduction to gather materials, conduction is gathered materials and shows good mechanical property and conductivity.
For achieving the above object, technical scheme of the present invention is: a kind of conduction for conducting concrete is gathered materials, and it is by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer four kinds of components, shared by each component, mass percent is: clay 70 ~ 93%, iron powder 1 ~ 6%, Fe
3o
41 ~ 10%, polyacrylic ester-styrol copolymer 5 ~ 14%.
Described clay is that the clay (unselected clay) taking from soil is dried to biodiversity content≤4% (quality), and after broken, grinding is to the powder of particle diameter≤0.15mm.
Described iron powder is commercially available Industrial iron powder, purity >=98% (quality), and median size is 0.005 ~ 0.01mm.
Described Fe
3o
4for commercial industrial product Fe
3o
4.
Described polyacrylic ester-styrol copolymer is formed by polyvinyl alcohol, methacrylic ester and styrene polymerization, and polyvinyl alcohol, methacrylic ester, cinnamic mol ratio are 1:(1 ~ 3): 1.
The step of above-mentioned synthesis polyacrylic ester-styrol copolymer comprises: with deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for raw material, the addition of each raw material is, deionized water, polyvinyl alcohol, methacrylic ester and cinnamic mol ratio are (1 ~ 2): 1:(1 ~ 3): 1, benzoyl peroxide accounts for 0.04 ~ 0.07% of raw material total mass; In preparation process, load weighted deionized water and polyvinyl alcohol are mixed, mixed solution is heated to 85 ~ 90 DEG C of stirring and dissolving, is then cooled to 70 ~ 75 DEG C; Add methacrylic ester, styrene monomer and benzoyl peroxide; Gained mixed solution is polymerized 6 ~ 8h at 75 ~ 80 DEG C; Suction filtration while hot, carries out vacuum drying by after the polyacrylic ester obtained-styrol copolymer hot wash twice, is ground to the powder of particle diameter≤0.15mm, obtains polyacrylic ester-styrol copolymer after oven dry.
Above-mentioned a kind of preparation method gathered materials for conducting concrete high-strength conductive, comprises the steps:
1) pre-treatment of clay and the synthesis of polyacrylic ester-styrol copolymer: dry the clay (unselected clay) taking from soil to moisture content≤4% (quality), after broken, grinding is to the powder of particle diameter≤0.15mm; With deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene, benzoyl peroxide for Material synthesis polyacrylic ester-styrol copolymer;
2) weighing of each component: take clay, iron powder, Fe
3o
4with polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 70 ~ 93%, iron powder 1 ~ 6%, Fe
3o
41 ~ 10%, polyacrylic ester-styrol copolymer 5 ~ 14%, mass percent sum shared by each component is 100%;
3) batch mixing and shaping: by load weighted clay, iron powder, Fe
3o
4be placed in cone-type mixer mix with polyacrylic ester-styrol copolymer, then granulation that compound is added water, and adopt dry-pressing formed method, to be become by powder pressing be highly 1 ~ 10mm, column base substrate that diameter is 5 ~ 50mm;
4) conduction is gathered materials and is burnt till: base substrate is placed in reducing atmosphere stove and calcines, at the uniform velocity be warming up to 700 ~ 800 DEG C, temperature rise rate is 5 ~ 10 DEG C/min, insulation 10 ~ 15min, be more at the uniform velocity warming up to 1000 ~ 1100 DEG C, temperature rise rate is 5 ~ 10 DEG C/min, insulation 10 ~ 20min, at the uniform velocity be cooled to room temperature under reducing atmosphere, the speed at the uniform velocity cooled is 5 ~ 10 DEG C/min, and the conduction that must be used for conducting concrete is gathered materials.
Described reducing atmosphere is the CO gas that coke (external coke briquette in burner hearth) at high temperature reacts generation.
Obtained conduction is gathered materials and is had good conductivity and mechanical property.
Obtained conduction gathered materials, the stone after broken in all or part of alternative concrete or sand, match with cement, water and electric conduction of carbon fiber phase material, be applied to conducting concrete, make concrete show good conductivity and mechanical property.
Compared with prior art, the invention has the beneficial effects as follows:
1) gathering materials of obtaining has excellent conductivity, can be used as that conductive paste material substitutes sand, stone is evenly distributed in concrete, also can mix in concrete as carbon fiber mixes with other conductive paste material, form uniform conductive network, Concrete Structure conductivity.
2) conduct electricity in the preparation process of gathering materials, sinter after compound is dry-pressing formed, the mechanical property that conduction is gathered materials strengthens.
3) polyacrylic ester-styrol copolymer as one of conduction aggregate component is organic resin, has the feature of high strength, high rigidity, clay particle can be coupled together during sintering, strengthens aggregate strength.Meanwhile, under comparatively low-dosage, just can form conductive network, improve the conductivity gathered materials.Obtained conduction gathered materials and be applied to concrete, concrete shows good conductivity and mechanical property.
4) main component of gathering materials of conducting electricity is clay, compared with the electro-conductive material such as expensive carbon fiber, steel fiber, can greatly reduce the cost preparing conducting concrete.
5) conduction is gathered materials by regulating each component concentration and sintering temperature to control its conductivity.Simultaneously by component concentration, sintering temperature and dry-pressing formed time pressure-controlling, realize mineral facies composition, ratio and the isoparametric control of porosity of gathering materials, thus the intensity of conducting concrete of the intensity of gathering materials and preparation is conducted electricity in adjustment.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Described iron powder is commercially available Industrial iron powder, purity>=98% (quality), and median size is 0.005 ~ 0.01mm, described Fe
3o
4for commercial industrial product Fe
3o
4described polyacrylic ester-styrol copolymer is with deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for raw material is prepared from, and polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide are commercially available chemical reagent.
The step of synthesizing described polyacrylic ester-styrol copolymer comprises: with deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for raw material, the addition of each raw material is, deionized water, polyvinyl alcohol, methacrylic ester and cinnamic mol ratio are (1 ~ 2): 1:(1 ~ 3): 1, benzoyl peroxide accounts for 0.04 ~ 0.07% of raw material total mass; In preparation process, load weighted deionized water and polyvinyl alcohol are mixed, mixed solution is heated to 85 ~ 90 DEG C of stirring and dissolving, is then cooled to 70 ~ 75 DEG C; Add methacrylic ester, styrene monomer and benzoyl peroxide; Gained mixed solution is polymerized 6 ~ 8h at 75 ~ 80 DEG C; Suction filtration while hot, carries out vacuum drying by after the polyacrylic ester obtained-styrol copolymer hot wash twice, is ground to the powder of particle diameter≤0.15mm, obtains polyacrylic ester-styrol copolymer after oven dry.
Embodiment 1:
A kind of high-strength conductive for conducting concrete gathers materials, and it is by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 75%, iron powder 3%, Fe
3o
49%, polyacrylic ester-styrol copolymer 13%.
Above-mentioned a kind of preparation method gathered materials for the high-strength conductive of conducting concrete, comprises the following steps:
1) raw materials pretreatment: drying to moisture content by the clay (unselected clay) taking from soil is 3% (quality), and after broken, grinding is to the powder of particle diameter≤0.15mm; With deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for Material synthesis polyacrylic ester-styrol copolymer;
2) weighing of each component: take clay, iron powder, Fe
3o
4with polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 75%, iron powder 3%, Fe
3o
49%, polyacrylic ester-styrol copolymer 13%;
3) batch mixing and shaping: by load weighted clay, iron powder, Fe
3o
4to mix in cone-type mixer with polyacrylic ester-styrol copolymer, then granulation that compound is added water, and adopt dry-pressing formed method, to be become by powder pressing be highly 2.5mm, column base substrate that diameter is 4.5mm;
4) conduction is gathered materials and is burnt till: sent into by base substrate in reducing atmosphere stove and calcine, be at the uniform velocity warming up to 750 DEG C, temperature rise rate is 7 DEG C/min, insulation 10min; At the uniform velocity be warming up to 1100 DEG C again, temperature rise rate is 7 DEG C/min, insulation 15min; At the uniform velocity be cooled to room temperature under reducing atmosphere, the speed at the uniform velocity cooled is 7 DEG C/min, and the conduction obtained after cooling for conducting concrete is gathered materials.
Add in clay using Graphite Powder 99 and slag as conductive phase respectively and prepare conduction and gather materials, the performance of gathering materials with conduction of the present invention contrasts, result show conduction of the present invention gather materials conduct electricity very well, intensity high (see table 1).
The performance comparison that conduction prepared by the different conductive phase of table 1 is gathered materials
| Conduction is gathered materials | Conductive phase accounts for clay mass ratio/% | Folding strength/MPa | Resistivity/Ω cm |
| Graphite Powder 99 is that the conduction of conductive phase is gathered materials | 15 | 2.1 | 152 |
| Slag is that the conduction of conductive phase is gathered materials | 20 | 25.3 | 82 |
| Conduction of the present invention is gathered materials | 15 | 28.5 | 10 |
Wherein: Graphite Powder 99 is commercially available commercial graphites powder, carbon content >=98%, and slag is industrial slag, particle diameter≤0.15mm; Two electrode methods are adopted to test the resistivity of gathering materials.
Three kinds of conductions described in use table 1 are gathered materials preparation conducting concrete, and proportioning is in table 2:
The each component proportioning of table 2 conducting concrete (kg/m
3)
| Sequence number | Conduction is gathered materials kind | Conduction is gathered materials | Cement | Water | Sand | Carbon fiber |
| A1 | Graphite Powder 99 | 900 | 500 | 170 | 850 | 25 |
| A2 | Slag | 900 | 500 | 170 | 850 | 25 |
| A3 | The present invention | 900 | 500 | 170 | 850 | 25 |
Wherein: conduction is gathered materials, and to adopt after fragmentation be that the conduction of the continuous grading of 0 ~ 4.75mm is gathered materials, cement adopts P.O42.5 cement, and stone is 0 ~ 4.75mm Wingdale rubble, and water is tap water, sand is the river sand of fineness modulus 2.8, and carbon fiber is commercially availablely shortly cut PAN-based carbon fiber.
Contrasted by the correlated performance of kind of the conducting concrete of three described in table 2, result shows, conduction of the present invention gathered materials to be applied to and prepare conducting concrete, concrete conductivity is excellent, ultimate compression strength higher (see table 3).
Table 3 difference conduction is gathered materials the performance index of conducting concrete of preparation
| Sequence number | 28d ultimate compression strength/MPa | 28d resistivity/Ω cm |
| A1 | 32 | 170 |
| A2 | 50 | 150 |
| A3 | 53 | 120 |
Embodiment 2:
A kind of high-strength conductive for conducting concrete gathers materials, and it is by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 83%, iron powder 6%, Fe
3o
42%, polyacrylic ester-styrol copolymer 9%.
Above-mentioned a kind of preparation method gathered materials for the high-strength conductive of conducting concrete, comprises the following steps:
1) raw materials pretreatment: drying to moisture content by the clay (unselected clay) taking from soil is 3% (quality), and after broken, grinding is to the powder of particle diameter≤0.15mm; With deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for Material synthesis polyacrylic ester-styrol copolymer;
2) weighing of each component: take clay, iron powder, Fe
3o
4with polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 83%, iron powder 6%, Fe
3o
42%, polyacrylic ester-styrol copolymer 9%;
3) batch mixing and shaping: by load weighted clay, iron powder, Fe
3o
4to mix in cone-type mixer with polyacrylic ester-styrol copolymer, then granulation that compound is added water, and adopt dry-pressing formed method, to be become by powder pressing be highly 3.5mm, column base substrate that diameter is 8.5mm;
4) conduction is gathered materials and is burnt till: sent into by base substrate in reducing atmosphere stove and calcine, be at the uniform velocity warming up to 700 DEG C, temperature rise rate is 5 DEG C/min, insulation 10min; At the uniform velocity be warming up to 1050 DEG C again, temperature rise rate is 7 DEG C/min, insulation 15min; Then be at the uniform velocity cooled to room temperature under reducing atmosphere, the speed at the uniform velocity cooled is 10 DEG C/min, and the conduction obtained after cooling for conducting concrete is gathered materials.
Add in clay using Graphite Powder 99 and slag as conductive phase respectively and prepare conduction and gather materials, the performance of gathering materials with conduction of the present invention contrasts, result show conduction of the present invention gather materials conduct electricity very well, intensity high (see table 4).
The performance comparison that conduction prepared by the different conductive phase of table 4 is gathered materials
| Conduction is gathered materials | Conductive phase accounts for clay mass ratio/% | Folding strength/MPa | Resistivity/Ω cm |
| Graphite Powder 99 is that the conduction of conductive phase is gathered materials | 15 | 2.1 | 152 |
| Slag is that the conduction of conductive phase is gathered materials | 20 | 25.3 | 82 |
| Conduction of the present invention is gathered materials | 9 | 31.2 | 15 |
Wherein: Graphite Powder 99 is commercially available commercial graphites powder, carbon content >=98%, and slag is industrial slag, particle diameter≤0.15mm; Two electrode methods are adopted to test the resistivity of gathering materials.
Three kinds of conductions described in use table 4 are gathered materials preparation conducting concrete, and proportioning is in table 5:
The each component proportioning of table 5 conducting concrete (kg/m
3)
| Sequence number | Conduction is gathered materials kind | Conduction is gathered materials | Cement | Water | Sand | Carbon fiber |
| B1 | Graphite Powder 99 | 900 | 500 | 170 | 850 | 25 |
| B2 | Slag | 900 | 500 | 170 | 850 | 25 |
| B3 | The present invention | 900 | 500 | 170 | 850 | 25 |
Wherein: conduction is gathered materials, and to adopt after fragmentation be that the conduction of the continuous grading of 0 ~ 4.75mm is gathered materials, cement adopts P.O42.5 cement, and stone is 0 ~ 4.75mm Wingdale rubble, and water is tap water, sand is the river sand of fineness modulus 2.8, and carbon fiber is commercially availablely shortly cut PAN-based carbon fiber.
Contrasted by the correlated performance of kind of the conducting concrete of three described in table 5, result shows, conduction of the present invention gathered materials to be applied to and prepare conducting concrete, concrete conductivity is excellent, ultimate compression strength higher (see table 6).
Table 6 difference conduction is gathered materials the performance index of conducting concrete of preparation
| Sequence number | 28d ultimate compression strength/MPa | 28d resistivity/Ω cm |
| B1 | 32 | 170 |
| B2 | 50 | 150 |
| B3 | 55 | 125 |
Embodiment 3:
A kind of high-strength conductive for conducting concrete gathers materials, and it is by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 90%, iron powder 1%, Fe
3o
43%, polyacrylic ester-styrol copolymer 6%.
Above-mentioned a kind of preparation method gathered materials for the high-strength conductive of conducting concrete, comprises the following steps:
1) raw materials pretreatment: drying to moisture content by the clay (unselected clay) taking from soil is 3% (quality), and after broken, grinding is to the powder of particle diameter≤0.15mm; With deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for Material synthesis polyacrylic ester-styrol copolymer;
2) weighing of each component: take clay, iron powder, Fe
3o
4with polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 90%, iron powder 1%, Fe
3o
43%, polyacrylic ester-styrol copolymer 6%;
3) batch mixing and shaping: by clay, iron powder, Fe
3o
4to mix in cone-type mixer with polyacrylic ester-styrol copolymer, then granulation that compound is added water, and adopt dry-pressing formed method, to be become by powder pressing be highly 6.5mm, column base substrate that diameter is 15.5mm;
4) conduction is gathered materials and is burnt till: sent into by base substrate in reducing atmosphere stove and calcine, be at the uniform velocity warming up to 700 DEG C, temperature rise rate is 5 DEG C/min, insulation 10min; At the uniform velocity be warming up to 1020 DEG C again, temperature rise rate is 5 DEG C/min, insulation 15min; Then be at the uniform velocity cooled to room temperature under reducing atmosphere, the speed at the uniform velocity cooled is 5 DEG C/min, and the conduction obtained after cooling for conducting concrete is gathered materials.
Add in clay using Graphite Powder 99 and slag as conductive phase respectively and prepare conduction and gather materials, the performance of gathering materials with conduction of the present invention contrasts, result show conduction of the present invention gather materials conduct electricity very well, intensity high (see table 7).
The performance comparison that conduction prepared by the different conductive phase of table 7 is gathered materials
| Conduction is gathered materials | Conductive phase accounts for clay mass ratio/% | Folding strength/MPa | Resistivity/Ω cm |
| Graphite Powder 99 is that the conduction of conductive phase is gathered materials | 15 | 2.1 | 152 |
| Slag is that the conduction of conductive phase is gathered materials | 20 | 25.3 | 82 |
| Conduction of the present invention is gathered materials | 8 | 33.2 | 50 |
Wherein: Graphite Powder 99 is commercially available commercial graphites powder, carbon content >=98%, and slag is industrial slag, particle diameter≤0.15mm; Two electrode methods are adopted to test the resistivity of gathering materials.
Three kinds of conductions described in use table 7 are gathered materials preparation conducting concrete, and proportioning is in table 8:
The each component proportioning of table 8 conducting concrete (kg/m
3)
| Sequence number | Conduction is gathered materials kind | Conduction is gathered materials | Cement | Water | Sand | Carbon fiber |
| C1 | Graphite Powder 99 | 900 | 500 | 170 | 850 | 25 |
| C2 | Slag | 900 | 500 | 170 | 850 | 25 |
| C3 | The present invention | 900 | 500 | 170 | 850 | 25 |
Wherein: conduction is gathered materials, and to adopt after fragmentation be that the conduction of the continuous grading of 0 ~ 4.75mm is gathered materials, cement adopts P.O42.5 cement, and stone is 0 ~ 4.75mm Wingdale rubble, and water is tap water, sand is the river sand of fineness modulus 2.8, and carbon fiber is commercially availablely shortly cut PAN-based carbon fiber.
Contrasted by the correlated performance of the conducting concrete of three described in table 8 kind, result shows, conduction of the present invention gathered materials to be applied to and prepare conducting concrete, concrete conductivity is excellent, ultimate compression strength higher (see table 9).
Table 9 difference conduction is gathered materials the performance index of conducting concrete of preparation
| Sequence number | 28d ultimate compression strength/MPa | 28d resistivity/Ω cm |
| C1 | 32 | 170 |
| C2 | 50 | 150 |
| C3 | 58 | 135 |
Bound value, the interval value of inventing each raw material related to can realize the present invention, and lower limit value and the interval value of processing parameter of the present invention (as temperature, time etc.) can realize the present invention, do not enumerate embodiment at this.
Claims (5)
1. one kind is gathered materials for the high-strength conductive of conducting concrete, it is characterized in that, it is by clay, iron powder, Fe
3o
4be prepared from polyacrylic ester-styrol copolymer four kinds of components, shared by each component, mass percent is: clay 70 ~ 93%, iron powder 1 ~ 6%, Fe
3o
41 ~ 10%, polyacrylic ester-styrol copolymer 5 ~ 14%;
The preparation method of polyacrylic ester-styrol copolymer is as follows: with deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for raw material, the addition of each raw material is: deionized water, polyvinyl alcohol, methacrylic ester and cinnamic mol ratio are (1 ~ 2): 1:(1 ~ 3): 1, benzoyl peroxide accounts for 0.04 ~ 0.07% of raw material total mass; In preparation process, load weighted deionized water is mixed with polyvinyl alcohol, mixed solution is heated to 85 ~ 90 DEG C of stirring and dissolving, is then cooled to 70 ~ 75 DEG C; Add methacrylic ester, styrene monomer and benzoyl peroxide; Gained mixed solution is polymerized 6 ~ 8h at 75 ~ 80 DEG C; Suction filtration while hot, carries out vacuum drying by after the polyacrylic ester obtained-styrol copolymer hot wash twice, is ground to the powder of particle diameter≤0.15mm, obtains polyacrylic ester-styrol copolymer after oven dry.
2. a kind of high-strength conductive for conducting concrete according to claim 1 gathers materials, and it is characterized in that: described clay is that the clay taking from soil is dried to biodiversity content≤4%, and after broken, grinding is to the powder of particle diameter≤0.15mm.
3. a kind of high-strength conductive for conducting concrete according to claim 1 gathers materials, and it is characterized in that: described iron powder is commercially available Industrial iron powder, purity >=98%, and median size is 0.005 ~ 0.01mm.
4. a kind of high-strength conductive for conducting concrete according to claim 1 gathers materials, and it is characterized in that: described Fe
3o
4for commercial industrial product.
5. a kind of preparation method gathered materials for the high-strength conductive of conducting concrete according to claim 1, is characterized in that, comprise the steps:
1) pre-treatment of clay and the synthesis of polyacrylic ester-styrol copolymer: dry the clay taking from soil to biodiversity content≤4%, after broken, grinding is to the powder of particle diameter≤0.15mm; With deionized water, polyvinyl alcohol, methacrylic ester, vinylbenzene and benzoyl peroxide for Material synthesis polyacrylic ester-styrol copolymer;
2) weighing of each component: take clay, iron powder, Fe
3o
4with polyacrylic ester-styrol copolymer, shared by each component, mass percent is: clay 70 ~ 93%, iron powder 1 ~ 6%, Fe
3o
41 ~ 10%, polyacrylic ester-styrol copolymer 5 ~ 14%, mass percent sum shared by each component is 100%;
3) batch mixing and shaping: by load weighted clay, iron powder, Fe
3o
4be placed in cone-type mixer mix with polyacrylic ester-styrol copolymer, add water compound granulation, and adopt dry-pressing formed method, and to be become by powder pressing be highly 1 ~ 10mm, diameter is the column base substrate of 5 ~ 50mm;
4) conduction is gathered materials and is burnt till: base substrate is placed in reducing atmosphere stove and calcines, at the uniform velocity be warming up to 700 ~ 800 DEG C, temperature rise rate is 5 ~ 10 DEG C/min, insulation 10 ~ 15min, be more at the uniform velocity warming up to 1000 ~ 1100 DEG C, temperature rise rate is 5 ~ 10 DEG C/min, insulation 10 ~ 20min, at the uniform velocity be cooled to room temperature under reducing atmosphere, the speed at the uniform velocity cooled is 5 ~ 10 DEG C/min, and the conduction that must be used for conducting concrete is gathered materials.
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| CN107574731B (en) * | 2017-10-17 | 2019-09-27 | 吉水县科华混凝土有限公司 | A kind of preparation method for the dedicated conducting concrete mortar of ice-melt that removes the snow |
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