CN115196868B - Carbon fiber rainwater collection module core material and preparation method thereof - Google Patents
Carbon fiber rainwater collection module core material and preparation method thereof Download PDFInfo
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- CN115196868B CN115196868B CN202210912428.8A CN202210912428A CN115196868B CN 115196868 B CN115196868 B CN 115196868B CN 202210912428 A CN202210912428 A CN 202210912428A CN 115196868 B CN115196868 B CN 115196868B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Fibers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The application relates to the technical field of inorganic fiber materials, and particularly discloses a carbon fiber rainwater collection module core material and a preparation method thereof. The carbon fiber rainwater collection module core material is prepared from the following raw materials in parts by weight: 60-80 parts of mineral raw materials, 5-10 parts of carbon fibers and 3-5 parts of binders; the mineral raw materials are a mixture of volcanic rock, limestone and coke, and the mass ratio of the volcanic rock to the limestone to the coke is (3-7): (1-5): (1-3). The preparation method of the carbon fiber rainwater collection module core material comprises the following steps: mixing the raw materials in parts by weight, and heating and melting; the melt formed by melting is centrifugally spun and cooled to form inorganic fibers; and placing the inorganic fibers in a die to be extruded and molded into a cuboid core material. The carbon fiber rainwater collection module core material has good compressive strength, water absorbability and water permeability.
Description
Technical Field
The application relates to the technical field of inorganic fiber materials, in particular to a carbon fiber rainwater collection module core material and a preparation method thereof.
Background
Rainwater collection becomes more and more important due to the lack of water resources in China. The rainwater collection module can effectively collect rainwater, the shortage of water resources can be solved by utilizing the collected rainwater, and the rainwater collection module is buried underground without damaging ecological environment and can be recycled.
Most of the currently used rainwater collecting modules comprise a core material with good water absorbability and a filter surface layer cloth for wrapping the core material, wherein the core material is buried underground, so that the bearing capacity is poor, and the service life of the rainwater collecting module can be shortened.
With respect to the related art as described above, the inventors consider that the core material of the conventional rainwater collecting module has a problem of poor compressive strength, thus restricting its use and development.
Disclosure of Invention
In order to improve compressive strength of the rainwater collection module core material, the application provides a carbon fiber rainwater collection module core material and a preparation method thereof.
In a first aspect, the application provides a carbon fiber rainwater collection module core material, adopts following technical scheme:
the carbon fiber rainwater collection module core material is prepared from the following raw materials in parts by weight: 60-80 parts of mineral raw materials, 5-10 parts of carbon fibers and 3-5 parts of binders; the mineral raw materials are a mixture of volcanic rock, limestone and coke, and the mass ratio of the volcanic rock to the limestone to the coke is (3-7): (1-5): (1-3).
By adopting the technical scheme, the volcanic rock surface is uniformly distributed with air holes, has no sharp particles, has small resistance to water flow, has stronger water absorption and water permeability, can resist the shearing action of hydraulic power with different intensities, and has excellent mechanical strength; volcanic rock has the characteristics of being porous and large in surface area, can adsorb harmful bacteria in water and heavy metal ions such as chromium, arsenic and the like which affect organisms, even comprises some residual chlorine in water, and has good adsorption and filtration effects on pollutants in water;
limestone is dissolved by groundwater or surface water to form an oversaturated calcium carbonate solution, and then the oversaturated calcium carbonate solution is slowly precipitated by physical and chemical actions in nature, so that the water absorption stone is gradually formed by condensation;
the coke is a solid product of high-temperature carbonization, has a crack and an irregular porous structure of porous spore, expands when meeting water, and has good water absorption;
the carbon fiber has good mechanical strength, is used as a reinforcing material, and has the biggest characteristics of high tensile strength, inorganic fiber and good chemical resistance, and the compressive strength of the core material is effectively improved by adding the carbon fiber on the core material of the carbon fiber rainwater collecting module.
The binder well bonds the carbon fiber and the inorganic mineral together, so that the compatibility among the components of the carbon fiber rainwater collecting module core material is improved.
In conclusion, the formula is reasonable, and under the combined action of the components, the prepared carbon fiber rainwater collecting material not only has excellent water absorption and water permeability, but also has higher compressive strength.
In a specific embodiment, the carbon fibers are chopped carbon fibers of 1-3 mm.
By adopting the technical scheme, the chopped fibers are made of carbon fibers through a fiber cutting machine, the strength of the chopped fibers is higher than that of steel, the density of the chopped fibers is lower than that of aluminum, the chopped fibers are more corrosion-resistant than stainless steel, the chopped fibers have more excellent mechanical properties than ordinary carbon fibers, and the compressive strength of the carbon fiber rainwater collecting module core material can be further improved.
In a specific embodiment, the binder is a mixture of sodium silicate, palygorskite powder and sepiolite wool, and the mass ratio of the three is (8-10): (1-5): (1-3).
By adopting the technical scheme, sodium silicate is a mineral adhesive, when non-metal materials are bonded, active points on the surface of a bonded substrate form an oxide film under the action of oxygen, the oxide film can react with water to activate hydroxyl ends, and silicate ions can react with the hydroxyl ends to form-Si-O-, so that different inorganic matters are bonded.
Palygorskite powder belongs to sepiolite family in mineralogy classification, and is a crystalline hydrated magnesium aluminum silicate mineral; palygorskite powder has unique layer chain structure characteristics, lattice substitution exists in the palygorskite powder, and crystals are in symptoms, fiber shapes or fiber aggregation shapes; and meanwhile, the mineral raw material has an intermediate structure between a chain structure and a layered structure, and has good binding capability with mineral raw materials and fibers.
The sepiolite velvet is made of sepiolite, is a white, light-weight high-magnesium fibrous cinnamate clay mineral capable of floating on water surface, has good mixing property with sodium silicate and palygorskite powder, and can improve the compatibility of mineral raw materials and carbon fibers.
In conclusion, the binder composed of sodium silicate, palygorskite powder and sepiolite velvet has good cohesiveness to mineral raw materials and carbon fibers, and the compatibility of the mineral raw materials and the carbon fibers is further improved by controlling the mass ratio of the three materials.
In a specific embodiment, the binder is prepared by the following steps: mixing sodium silicate, palygorskite powder and sepiolite velvet, wherein the stirring speed is 1500-2000r/min, and the mixing time is 30-60min.
By adopting the technical scheme, the preparation method is simple, and the preparation efficiency can be improved by controlling the stirring speed and the mixing time.
In a second aspect, the present application provides a method for preparing a carbon fiber rainwater collection module core, which adopts the following technical scheme:
the preparation method of the carbon fiber rainwater collection module core material comprises the following steps:
mixing the raw materials in parts by weight, and heating and melting;
the melt formed by melting is centrifugally spun and cooled to form inorganic fibers;
and placing the inorganic fibers in a die to be extruded and molded into a cuboid core material.
By adopting the technical scheme, the preparation method of the carbon fiber rainwater collection module core material is simple in process and low in cost, and the prepared carbon fiber rainwater collection module core material has the characteristics of high compressive strength, high water absorption rate and high water permeability.
In a specific embodiment, the raw materials are heated by a furnace at 900-1300 deg.C, 15-20MPa and 350-450r/min.
By adopting the technical scheme, the parameters of the raw materials during heating and melting are optimized, so that the carbon fiber rainwater collecting module core material is more beneficial to preparation, and the preparation efficiency is improved.
In a specific embodiment, the melting is carried out by introducing one of air, oxygen or oxygen-enriched air into the furnace to assist in the melting.
By adopting the technical scheme, the carbon-containing raw materials in the premelting furnace in the air, oxygen or oxygen-enriched air undergo combustion reaction, and the heat released by the reaction enables other raw materials to reach the melting temperature, so that the overall melting speed of the raw materials is improved, and the preparation speed of the carbon fiber rainwater collecting module core material is further accelerated.
In a specific embodiment, the component materials are milled to an average particle size of 50-100 mesh by ball milling during mixing.
By adopting the technical scheme, the mixture is crushed to enough fineness to obtain higher powder uniformity and contact area, so that the melting speed of the mixture under the high-temperature condition of a melting furnace is increased, the components of the melt are uniform, and less unmelted matters exist in the melt; when the size of the mixture is large, the melting speed of the mixture in the melting furnace is low, the air flow in the melting furnace is not smooth, the bed resistance is high, the melt ingredients are not uniform enough, unmelted matters are easily contained in the melt, the quality of the prepared inorganic fiber is reduced, the fiber is not long enough, the strength is not high enough, and the compressive strength of the finally prepared carbon fiber rainwater collecting core material is reduced.
In a specific embodiment, the melt is spun by a roller type spinning machine with the rotating speed of the spinning machine being 5500-7000 r/mm; the diameter of the inorganic fiber is 1-10mm, and the length-diameter ratio is 10-100.
By adopting the technical scheme, the rotation speed of the spinning roller and the diameter of the prepared inorganic fibers are controlled, so that the compressive strength and the water absorption of the prepared carbon fiber rainwater collecting module core material are better.
In a specific embodiment, the inorganic fibers are extruded in the die at a pressure of 5 to 10MPa for a time of 0.5 to 1 hour.
By adopting the technical scheme, the pressure and time during extrusion are controlled, so that the core material of the carbon fiber rainwater collecting module is fast in molding, and the compression strength of the product is not influenced by gaps.
In summary, the present application has the following beneficial effects:
1. according to the carbon fiber rainwater collection module core material, the mineral raw materials and the carbon fibers are added into the carbon fiber rainwater collection module core material, the mineral raw materials contain a certain proportion of volcanic rock, limestone and coke, the volcanic rock, the limestone and the coke are porous in surface, the water absorption and the water permeability are excellent, the water absorption and the water permeability of the carbon fiber rainwater collection module core material are guaranteed, and the compressive strength of the carbon fiber rainwater collection module core material is improved through the carbon fibers, so that the carbon fiber rainwater collection module core material not only has excellent absorption and water permeability, but also has good compressive strength;
2. in the method, sodium silicate, palygorskite powder and sepiolite velvet with a certain proportion are used as adhesives to be added into the carbon fiber rainwater collection module core material, so that the compatibility of mineral raw materials and carbon fibers is good;
3. the average particle size of the mixture is controlled, so that the powder material has a high melting speed in a melting furnace, the obtained melt has uniform components, and unmelts in the melt are reduced.
Detailed Description
The present application is further described in detail below in connection with the preparation examples and examples.
Among the relevant raw materials used in the preparation examples and examples:
the average grain diameter of volcanic rock is 6-9mm; limestone is purchased from Liaoning middling machinery equipment Co., ltd; the granularity of the coke is 40-60 meshes; chopped carbon fibers were purchased from Shanghai composite technology Co., ltd; sodium silicate was purchased from atanan de joe chemical technology limited; the specific surface area of palygorskite powder is 9.6-36m 2 /g; the sepiolite velvet has a velvet length of 3mm.
Preparation example
Preparation examples 1 to 7
As shown in Table 1, the main difference between preparation examples 1 to 7 is the raw material ratios of the binders.
The following will describe preparation example 1 as an example. The preparation example of the application discloses an adhesive, which is prepared from 8Kg of sodium silicate, 1Kg of palygorskite powder and 1Kg of sepiolite velvet.
The preparation example of the application also discloses a preparation method of the adhesive, which comprises the following specific steps:
weighing sodium silicate, palygorskite powder and sepiolite velvet according to a formula, sequentially adding the sodium silicate, the palygorskite powder and the sepiolite velvet into a stirrer, and uniformly mixing the materials to obtain the adhesive, wherein the stirring speed is 1500r/min, and the mixing time is 60min.
TABLE 1 raw material ratios of the binders in preparation examples 1 to 7
Preparation example 8
The preparation example is basically the same as preparation example 1, except that: in the preparation method, the stirring speed is 2000r/min, and the mixing time is 30min.
Examples
Examples 1 to 9
As shown in table 2, the main difference between examples 1 to 9 is the raw material ratios of the carbon fiber rainwater collecting module core materials are different.
The following description will take example 1 as an example. The embodiment of the application discloses a carbon fiber rainwater collection module core material, which is prepared from 36Kg of volcanic rock, 12Kg of limestone, 12Kg of coke, 5Kg of chopped carbon fiber and 3Kg of binder, wherein the binder is prepared from preparation example 1.
The embodiment also discloses a preparation method of the carbon fiber rainwater collection module core material, which comprises the following steps:
s1, respectively weighing the components according to a formula, adding the components into a ball mill to form a mixture, and crushing the average particle size of the mixture to 50-100 meshes;
s2, adding the crushed mixture into a melting furnace, introducing oxygen into the melting furnace at the flow rate of 1.2L/min, stirring and heating to 900 ℃ at the speed of 350r/min, keeping the pressure of the melting furnace at 15MPa, and melting to obtain a melt;
s3, spinning the melt flowing out of the melting furnace through a spinning machine when passing through a centrifugal roller, and cooling the melt in cold water with the temperature of 10 ℃ to form inorganic fibers, wherein the rotating speed of the spinning machine is 5500r/min, and the average diameter of the obtained inorganic fibers is controlled to be 1-10mm and the length-diameter ratio is 10;
and S4, placing the inorganic fibers in a die with the thickness of 120cm multiplied by 25cm multiplied by 40cm for extrusion, wherein the pressure during extrusion is 5Mpa, and the time is 1h, so that the cuboid carbon fiber rainwater collecting module core material is obtained.
Table 2 ratios of raw materials in core materials of carbon fiber rainwater collecting modules in examples 1 to 9
Examples 10 to 16
This example differs from example 1 in that the adhesives of examples 10-16 were prepared using preparations 2-8, as shown in Table 3.
Table 3 preparation examples of the binders used in examples 10 to 16
Example 17
The present example differs from example 1 in that S2, the pulverized mixture was charged into a furnace, air was introduced into the furnace at a flow rate of 1.5L/min, and heated to 1300℃with stirring at 450r/min, and the furnace pressure was maintained at 20MPa, and melt was obtained;
s3, spinning the melt flowing out of the melting furnace through a spinning machine when passing through a centrifugal roller, and cooling the melt in cold water with the temperature of 10 ℃ to form inorganic fibers, wherein the rotating speed of the spinning machine is 7000r/min, and the average diameter of the obtained inorganic fibers is controlled to be 1-10mm and the length-diameter ratio is 100;
and S4, placing the inorganic fibers in a die with the thickness of 120cm multiplied by 25cm multiplied by 40cm for extrusion, wherein the pressure during extrusion is 10Mpa, and the time is 0.5h, so that the cuboid carbon fiber rainwater collection module core material is obtained.
Example 18
The present example differs from example 1 in that S2, the pulverized mixture was charged into a furnace, and oxygen-enriched air was introduced into the furnace at an air flow rate of 1.4L/min.
Comparative example
Comparative example 1
This comparative example is different from example 1 in that the addition amount of the chopped carbon fiber is 0.
Comparative example 2
This comparative example is different from example 1 in that the addition amount of the chopped carbon fiber is 20Kg.
Performance test
The same weight of the carbon fiber rainwater collecting module core material obtained in example 1-18 was used as test sample 1-18, and the same weight of the carbon fiber rainwater collecting module core material obtained in comparative example 1-2 was used as control sample 1-2. The test samples and the control samples were subjected to performance test, and the results are shown in Table 4.
1. Compressive Strength
The test sample and the control sample are respectively tested for compressive strength and compressive strength after 25 times of freeze thawing according to GB/T13480 and GB/T330111-2016, and the test results are analyzed and recorded.
2. Water absorption
The test sample and the control sample are subjected to volume water absorption test after 25 times of freeze thawing respectively according to the reference GB/T33011-2016, and the test results are analyzed and recorded.
3. Permeability to water
The test and control samples were tested for effective porosity with reference to T/CBMCA006-2018, respectively, and the test results were analyzed and recorded.
Table 4 performance test data
Referring to Table 4, in combination with examples 1-5, it can be seen that the samples all had good compressive strength, water absorption and water permeability as the mass ratio between volcanic rock, limestone and coke in the mineral raw material was changed (examples 1-3); in particular, when the mass ratio between volcanic rock, limestone and coke is 7: at 5:3, the water absorption and water permeability of the sample are optimal; furthermore, as the mineral raw material content increases (examples 3 to 5), the water absorption of the sample tends to increase, but the chopped carbon fiber ratio in the sample decreases because the compressive strength of the sample decreases.
Referring to table 4, in combination with examples 4, 6, and 7 and comparative examples 1 and 2, it can be seen that as the amount of chopped carbon fibers added in the sample increases, the compressive strength of the sample increases, because the chopped carbon fibers have excellent mechanical strength and high tensile strength, and are added as a reinforcing material to the sample, increasing the compressive strength of the sample; however, when the chopped carbon fibers are excessively added, the ratio of the mineral raw materials in the sample decreases, and thus the water absorption and water permeability of the sample decrease.
Referring to table 4, in combination with examples 6, 8 and 9, it can be seen that the samples all have excellent water absorbability, water permeability and compressive strength by increasing the addition amount of the binder within an appropriate range.
Referring to Table 4, in combination with examples 10 to 15, it can be seen that the obtained samples still have good compressive strength, water absorption and water permeability by changing the ratio between the components of the binder in the samples within an appropriate range.
Referring to Table 4, in combination with examples 16-18, it can be seen that the samples obtained by properly adjusting the parameters in the preparation method and the implementation method have good compressive strength, water absorption and water permeability.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (9)
1. The utility model provides a fine rainwater collection module core material of carbon, its characterized in that: the material is prepared from the following raw materials in parts by weight: 60-80 parts of mineral raw materials, 5-10 parts of carbon fibers and 3-5 parts of binders; the mineral raw materials are a mixture of volcanic rock, limestone and coke, and the mass ratio of the volcanic rock to the limestone to the coke is (3-7): (1-5): (1-3);
the binder is a mixture of sodium silicate, palygorskite powder and sepiolite velvet, and the mass ratio of the sodium silicate to the palygorskite powder to the sepiolite velvet is (8-10): (1-5): (1-3);
the preparation method of the carbon fiber rainwater collection module core material comprises the steps of mixing raw materials, heating and melting, forming inorganic fibers through spinning and cooling, and then performing mould pressing.
2. The carbon fiber rainwater collection module core material according to claim 1, wherein: the carbon fiber is a chopped carbon fiber with the diameter of 1-3 mm.
3. The carbon fiber rainwater collection module core material according to claim 1, wherein: the preparation method of the adhesive comprises the following steps: mixing sodium silicate, palygorskite powder and sepiolite velvet, wherein the stirring speed is 1500-2000r/min, and the mixing time is 30-60min.
4. A method for manufacturing a carbon fiber rainwater collection module core according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
mixing the raw materials in parts by weight, and heating and melting;
the melt formed by melting is centrifugally spun and cooled to form inorganic fibers;
and placing the inorganic fibers in a die to be extruded and molded into a cuboid core material.
5. The method for manufacturing a carbon fiber rainwater collection module core material according to claim 4, wherein: the raw materials are heated by a furnace at 900-1300 deg.C, 15-20MPa and 350-450r/min.
6. The method for manufacturing a carbon fiber rainwater collection module core material according to claim 5, wherein: and one of air and oxygen is introduced into the melting furnace to support combustion during melting.
7. The method for manufacturing a carbon fiber rainwater collection module core material according to claim 4, wherein: the raw materials are crushed into 50-100 meshes by ball milling when being mixed.
8. The method for manufacturing a carbon fiber rainwater collection module core material according to claim 4, wherein: the melt adopts a roller type yarn throwing machine when throwing yarn, and the rotating speed of the yarn throwing machine is 5500-7000 r/mm; the diameter of the inorganic fiber is 1-10mm, and the length-diameter ratio is 10-100.
9. The method for manufacturing a carbon fiber rainwater collection module core material according to claim 4, wherein: the pressure of the inorganic fiber when extruded in the die is 5-10MPa, and the time is 0.5-1h.
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| US20070287624A1 (en) * | 2006-06-13 | 2007-12-13 | Jon Frederick Bauer | Method for preparing glass |
| US11408162B2 (en) * | 2018-08-03 | 2022-08-09 | Cir-Con Products & Solutions, LLC | Underground stormwater storage system |
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| JPH10331213A (en) * | 1997-06-03 | 1998-12-15 | Morozumi:Kk | Water storage system of rainwater, etc. |
| CN101759357A (en) * | 2010-01-15 | 2010-06-30 | 太原玉盛源能源发展有限公司 | Method for manufacturing inorganic fibers |
| CN106358493A (en) * | 2016-08-31 | 2017-02-01 | 山东胜伟园林科技有限公司 | Method for collecting rainwater by water storage layer containing bamboo fiber and application thereof to saline-alkali land improvement |
| CN111253075A (en) * | 2018-11-30 | 2020-06-09 | 华能中天节能科技集团有限责任公司 | Rock wool product and preparation method thereof |
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