CN115893961A - Preparation method of inorganic non-metal plate for ocean trade container - Google Patents
Preparation method of inorganic non-metal plate for ocean trade container Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229910052755 nonmetal Inorganic materials 0.000 title abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000004568 cement Substances 0.000 claims abstract description 64
- 239000006004 Quartz sand Substances 0.000 claims abstract description 56
- 239000000835 fiber Substances 0.000 claims abstract description 49
- 150000004645 aluminates Chemical class 0.000 claims abstract description 43
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 41
- 235000019738 Limestone Nutrition 0.000 claims abstract description 40
- 239000006028 limestone Substances 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000011398 Portland cement Substances 0.000 claims abstract description 28
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 23
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 21
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 21
- 238000000227 grinding Methods 0.000 claims abstract description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000748 compression moulding Methods 0.000 claims abstract description 12
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 238000010008 shearing Methods 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims abstract 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000012784 inorganic fiber Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000013535 sea water Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 description 18
- 239000003469 silicate cement Substances 0.000 description 17
- 235000012239 silicon dioxide Nutrition 0.000 description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 239000007769 metal material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
Classifications
-
- 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
Abstract
The invention relates to the field of composite materials, in particular to a preparation method of an inorganic non-metallic plate for an ocean trade container, which comprises the following steps: step 1: mixing portland cement, aluminate cement, quartz sand, limestone and silica fume according to a preset mass ratio to obtain powder A; step 2: mixing quartz sand and calcium hydroxide according to a preset molar ratio, adding the mixture into water at the temperature of 120-140 ℃ for reaction for at least 12 hours, and filtering and drying to obtain an accelerator A; and step 3: mixing the powder A, the accelerator A, the fiber, the polymer and water according to a preset mass ratio, and shearing and stirring to obtain a mixture A, wherein the polymer is at least one of polyvinyl alcohol, polyacrylamide and glycerol; and 4, step 4: and putting the mixture A into a grinding tool, performing compression molding, and maintaining for 28 days after molding to obtain the inorganic nonmetal plate for the ocean trade container. The prepared plate has the characteristics of high toughness, high strength and seawater corrosion resistance.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a preparation method of an inorganic non-metallic plate for an ocean trade container.
Background
The ocean trade transportation mainly adopts container transportation, and the box of container generally is the metal material. Salt mist content in ocean atmosphere is high, and the salt mist has strong corrosion effect on metal, so that the conventional metal container needs to be maintained frequently. The inorganic non-metallic material has better corrosion resistance than the metal material, but the general inorganic non-metallic material has poor toughness and lower strength than the metal material and can not meet the use requirements of ocean transportation environment in ocean trade on the plate, so the development of the inorganic non-metallic plate with strong toughness, high strength and good corrosion resistance is particularly urgent.
Disclosure of Invention
The invention aims to provide a method for preparing an inorganic non-metallic plate for an ocean trade container, and the plate prepared by the method has the strength and toughness of a metal plate and particularly has good corrosion resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of an inorganic non-metallic plate for an ocean trade container comprises the following steps:
step 1: mixing Portland cement, aluminate cement, quartz sand, limestone and silica fume according to the mass ratio of 6.5-8.5: 6.5-8.5: 22 to 28:20 to 24: 30-45 to obtain powder A;
step 2: mixing quartz sand and calcium hydroxide according to a molar ratio of 1-3, adding the mixture into water at a temperature of 120-140 ℃ for reaction for at least 12 hours, and filtering and drying to obtain an accelerator A;
and step 3: mixing powder A, an accelerant A, fiber, a polymer and water according to a mass ratio of 100:0.5 to 1: 3-4;
and 4, step 4: and putting the mixture A into a grinding tool, performing compression molding, demolding after molding, and putting into an environment with the temperature of 20-40 ℃ and the humidity of more than 65% for curing for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
The inorganic non-metallic plate prepared by the method has the compressive strength of more than 200MPa, the breaking strength of more than 100MPa and the fracture toughness of more than 2.5 MPa.m 1/2 The high-strength high-toughness corrosion-resistant plate has the characteristics of corrosion resistance, high strength and good toughness, and can meet the use requirements of ocean transportation environment in ocean trade on plates. The curing temperature in step 4 is preferably 24 to 26 ℃.
Preferably, in the above preparation method, before step 1, a step of crushing and screening portland cement, aluminate cement, quartz sand, limestone and silica fume is further included, wherein:
selecting the parts of the portland cement and the aluminate cement below a 800-mesh sieve and above a 1000-mesh sieve;
selecting parts of the quartz sand below a 1000-mesh sieve and above a 2000-mesh sieve;
selecting the parts of limestone below a 2000-mesh sieve and on a 5000-mesh sieve;
the part of the silica fume which is below 5000 meshes is selected.
The particle sizes of various materials are reasonably designed, so that the materials can be closely stacked; on the basis, the polymer is added to further compact the plate. Under the compact condition, the mechanical property and the impermeability of the material are improved. The inorganic non-metallic plate prepared by the method has the compressive strength of more than 240MPa, the breaking strength of more than 120MPa and the fracture toughness of more than 3 MPa.m 1/2 。
Preferably, in the above preparation method, the portland cement is p.i 42.5 or p.i 52.5 cement; the aluminate cement is CA-50, CA-60 or CA-70 cement.
Preferably, in the above production method, the fiber in step 3 is a mixture of organic fiber and inorganic fiber. The organic fiber and the inorganic fiber are mixed for use, so that the performance of the plate can be further improved, and the toughness and the corrosion resistance of the plate can be further improved. Further preferably, the organic fiber is selected from PVA fibers, and the inorganic fiber is carbon fiber, which has a preferable effect. The fiber consists of water-soluble PVA fiber and high-strength carbon fiber, and after the water-soluble PVA fiber and the high-strength carbon fiber are added together, the water-soluble PVA and the carbon fiber are interwoven into a network, so that the toughness of the plate is improved, particularly, the water-soluble PVA can be well filled in the interface between the carbon fiber and a matrix, the defect size of the interface between the fiber and the matrix is reduced, and the characteristics of the PVA fiber and the carbon fiber can be better exerted.
Preferably, in the above preparation method, the polymer in step 3 is a mixture of polyvinyl alcohol, polyacrylamide and glycerol in a mass ratio of 5. The addition of the polymer of the composite component can further improve the compactness of the plate, thereby improving the strength of the plate.
Preferably, in the above preparation method, the quartz sand in step 2 is subjected to crushing and screening before use, and the fractions below the 1000-mesh sieve and above the 2000-mesh sieve are selected. The quartz sand contains silica in an amount of 95% or more as a main component, and therefore, when a molar ratio is calculated, the quartz sand is regarded as silica. The accelerator mainly comprises C-S-H (hydrated calcium silicate) gel, and can accelerate the hydration of portland cement, aluminate cement and silica fume in raw materials. The quartz sand is crushed and sieved, and the part below the 1000-mesh sieve and the part above the 2000-mesh sieve are used, so that the C-S-H gel has better dispersibility, and the hydration effects of the silicate cement, the aluminate cement and the silica fume in the raw materials are better. The molar ratio of the quartz sand to the calcium hydroxide is preferably 1.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Example 1:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, the aluminate cement, the quartz sand, the limestone and the silica fume obtained in the step (1) according to the mass ratio of 6.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Powder A, an accelerator A, fibers, a polymer and water are mixed according to a mass ratio of 100.5.
(5) And putting the mixture A into a grinding tool, performing compression molding at the temperature of 60 ℃, immediately demolding after molding under the molding pressure of 20MPa, and curing in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
The portland cement in the step (1) is P.I 42.5 cement, the aluminate cement is CA-50, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 97%.
The purity of the calcium hydroxide in the step (3) is 96%.
In the step (4), the fibers are a mixture of PVA fibers and carbon fibers according to a mass ratio of 10.
The prepared inorganic non-metallic plate for the ocean trade container has the compression strength of 280MPa, the breaking strength of 130MPa and the fracture toughness of 3.1 MPa-m 1/2 。
Example 2:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, the aluminate cement, the quartz sand, the limestone and the silica fume obtained in the step (1) according to a mass ratio of 8.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Mixing powder A, an accelerator A, fibers, a polymer and water according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 70 ℃, immediately demolding after molding under the molding pressure of 30MPa, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metal plate for the ocean trade container.
The Portland cement in the step (1) is P.I 52.5 cement, the aluminate cement is CA-70 cement, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) is 97%.
In the step (4), the fibers are a mixture of PVA fibers and carbon fibers according to a mass ratio of 10.
The compressive strength of the prepared plate is 310MPa, the breaking strength is 160MPa, and the fracture toughness is 3.4 MPa.m 1/2 。
Example 3:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a 800-mesh sieve and above a 1000-mesh sieve, the quartz sand is selected from parts below the 1000-mesh sieve and above the 2000-mesh sieve, the limestone is selected from parts below the 2000-mesh sieve and above the 5000-mesh sieve, and the silica fume is selected from parts below the 5000-mesh sieve.
(2) Mixing the portland cement, aluminate cement, quartz sand, limestone and silica fume obtained in the step (1) according to a mass ratio of 7.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Powder a, accelerator a, fiber, polymer and water were mixed according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 65 ℃ under the molding pressure of 25MPa, immediately demolding after molding, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
The Portland cement in the step (1) is P.I 42.5 cement, the aluminate cement is CA-50 cement, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) is 96%.
In the step (4), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The prepared plate has the compressive strength of 250MPa, the breaking strength of 130MPa and the fracture toughness of 3.1 MPa.m 1/2 。
Example 4:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) And (2) mixing the portland cement, aluminate cement, quartz sand, limestone and silica fume obtained in the step (1) according to a mass ratio of 8.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Mixing powder A, an accelerator A, fibers, a polymer and water according to a mass ratio of 100,
(5) And putting the mixture A into a grinding tool, performing compression molding at 65 ℃ under the molding pressure of 25MPa, immediately demolding after molding, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
The portland cement in the step (1) is obtained by mixing P.I 42.5 cement and P.I 52.5 cement according to a mass ratio of 1.
The silica sand in step 2 was identical to that in example 1.
The purity of the calcium hydroxide in the step (3) is 96%.
In the step (4), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The compressive strength of the prepared plate is 260MPa, the breaking strength is 140MPa, and the fracture toughness is 3.2 MPa.m 1/2 。
Example 5:
(1) Mixing portland cement, aluminate cement, quartz sand, limestone and silica fume according to a mass ratio of 8.
(2) Mixing quartz sand and calcium hydroxide according to a molar ratio of 1.
(3) Mixing powder A, accelerator A, fiber, polymer and water according to a mass ratio of 100.
(4) And putting the mixture A into a grinding tool, performing compression molding at 65 ℃ under the molding pressure of 25MPa, immediately demolding after molding, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
The portland cement in the step (1) is obtained by mixing P.I 42.5 cement and P.I 52.5 cement according to a mass ratio of 1.
The silica sand in the step (2) was the same as that in example 1.
The purity of the calcium hydroxide in the step (2) is 96%.
In the step (3), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The prepared plate has the compressive strength of 240MPa,the breaking strength is 120MPa, and the fracture toughness is 3.1 MPa.m 1/2 。
Example 6:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, aluminate cement, quartz sand, limestone and silica fume obtained in the step (1) according to a mass ratio of 8.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Mixing powder A, an accelerator A, fibers, a polymer and water according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 70 ℃, immediately demolding after molding under the molding pressure of 30MPa, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metal plate for the ocean trade container.
The portland cement in the step (1) is P.I 52.5 cement, the aluminate cement is CA-70 cement, the content of silica in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silica in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) is 97%.
In the step (4), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The compressive strength of the prepared plate is 290MPa, the breaking strength is 155MPa, and the fracture toughness is 3.3 MPa.m 1/2 。
Example 7:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, the aluminate cement, the quartz sand, the limestone and the silica fume obtained in the step (1) according to a mass ratio of 8.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Mixing powder A, an accelerator A, fibers, a polymer and water according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 70 ℃, immediately demolding after molding under the molding pressure of 30MPa, and maintaining in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metal plate for the ocean trade container.
The Portland cement in the step (1) is P.I 52.5 cement, the aluminate cement is CA-70 cement, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) is 97%.
In the step (4), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The compressive strength of the prepared plate is 300MPa, the breaking strength is 155MPa, and the fracture toughness is 3.3 MPa.m 1/2 。
Example 8:
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, aluminate cement, quartz sand, limestone and silica fume obtained in the step (1) according to a mass ratio of 8.5.
(3) Mixing the quartz sand and the calcium hydroxide in the step (1) according to a molar ratio of 1.
(4) Mixing powder A, an accelerator A, fibers, a polymer and water according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 70 ℃, immediately demolding after molding at the molding pressure of 30MPa, and curing in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic nonmetal plate for the ocean trade container.
The Portland cement in the step (1) is P.I 52.5 cement, the aluminate cement is CA-70 cement, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) is 97%.
In the step (4), the fiber is a mixture of polyester fiber and carbon fiber according to a mass ratio of 10.
The compressive strength of the prepared plate is 210MPa, the breaking strength is 115MPa, and the fracture toughness is 2.6 MPa.m 1/2 。
Comparative example 1:
reference is made to example 2.
(1) Respectively grinding and screening the silicate cement, the aluminate cement, the quartz sand, the limestone and the silica fume, wherein the silicate cement and the aluminate cement are selected from parts below a screen of 800 meshes and above a screen of 1000 meshes, the quartz sand is selected from parts below a screen of 1000 meshes and above a screen of 2000 meshes, the limestone is selected from parts below a screen of 2000 meshes and above a screen of 5000 meshes, and the silica fume is selected from parts below a screen of 5000 meshes.
(2) Mixing the portland cement, the aluminate cement, the quartz sand, the limestone and the silica fume obtained in the step (1) according to a mass ratio of 8.5.
(3) Mixing powder A, fiber, polymer and water according to a mass ratio of 100.
(5) And putting the mixture A into a grinding tool, performing compression molding at 70 ℃, immediately demolding after molding under the molding pressure of 30MPa, and curing in an environment with the temperature of 25 ℃ and the humidity of 70% for 28 days to obtain the inorganic non-metal plate.
The Portland cement in the step (1) is P.I 52.5 cement, the aluminate cement is CA-70 cement, the content of silicon dioxide in quartz sand is 96%, the content of calcium oxide in limestone is 52%, and the content of silicon dioxide in silica fume is 96%.
The purity of the calcium hydroxide in the step (3) was 97%.
In the step (4), the fiber is a mixture of PVA fiber and carbon fiber according to a mass ratio of 10.
The prepared plate has the compressive strength of 210MPa, the breaking strength of 90MPa and the fracture toughness of 2.5 MPa-m 1/2 。
By the comparison, the product performance is greatly reduced under the condition of not using the accelerator, and the product performance can not reach the basic requirement.
Comparative example 2:
by reference to example 2, we used PVA fibers throughout the fibers.
The compressive strength of the prepared plate is 280MPa, the breaking strength is 150MPa, and the fracture toughness is 2.9 MPa.m 1/2 。
Comparative example 3: by reference to example 2, we used carbon fibers throughout the fibers.
The compressive strength of the prepared plate is 270MPa, and the bending strength is highThe degree is 145MPa, and the fracture toughness is 3.0 MPa.m 1/2 。
As can be seen from the above examples 2, 2 and 3, the water-soluble PVA and the carbon fibers are interwoven into a network, so that the toughness of the plate is improved, and particularly, the water-soluble PVA can be well filled in the interface between the carbon fibers and the matrix, so that the defect size of the interface between the fibers and the matrix is reduced, and the characteristics of the PVA fibers and the carbon fibers can be better exerted. The performance achieves better effect under the condition that the mass ratio of the two is 10.
The ocean trade container made of the inorganic non-metal plate prepared by the method has the characteristics of corrosion resistance, high strength and good toughness, and can be used for producing ocean trade containers.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A preparation method of an inorganic non-metallic plate for an ocean trade container is characterized by comprising the following steps:
step 1: mixing Portland cement, aluminate cement, quartz sand, limestone and silica fume according to the mass ratio of 6.5-8.5: 6.5-8.5: 22 to 28:20 to 24: 30-45 to obtain powder A;
step 2: mixing quartz sand and calcium hydroxide according to a molar ratio of 1-3, adding the mixture into water at 120-140 ℃ for reaction for at least 12 hours, and filtering and drying to obtain an accelerator A;
and step 3: mixing the powder A, the accelerant A, the fiber, the polymer and the water according to a mass ratio of 100:0.5 to 1: 3-4, mixing the raw materials in a ratio of 6-8, and shearing and stirring for at least 0.5 hour at the temperature of 60-90 ℃ to obtain a mixture A, wherein the polymer is at least one of polyvinyl alcohol, polyacrylamide and glycerol;
and 4, step 4: and putting the mixture A into a grinding tool, performing compression molding, demolding after molding, and putting into an environment with the temperature of 20-40 ℃ and the humidity of more than 65% for curing for 28 days to obtain the inorganic non-metallic plate for the ocean trade container.
2. The method for preparing an inorganic non-metallic plate material for ocean trade containers as claimed in claim 1, further comprising the step of crushing and screening said portland cement, aluminate cement, quartz sand, limestone and silica fume before step 1, wherein:
the portland cement and the aluminate cement select parts below 800 meshes and above 1000 meshes;
selecting parts of the quartz sand below a 1000-mesh sieve and above a 2000-mesh sieve;
selecting a part of the limestone below a 2000-mesh sieve and a part of the limestone above a 5000-mesh sieve;
and selecting a part of the silica fume below a 5000-mesh sieve.
3. A method of making an inorganic non-metallic board for an ocean trade container as defined in claim 1 wherein said portland cement is p.i 42.5 or p.i 52.5 cement; the aluminate cement is CA-50, CA-60 or CA-70 cement.
4. The method of claim 1, wherein said fibers in step 3 are a mixture of organic fibers and inorganic fibers.
5. The method for preparing an inorganic non-metallic plate for ocean trade containers as claimed in claim 4, wherein the organic fiber is PVA fiber and the inorganic fiber is carbon fiber, and the mass ratio of the two is 10.
6. The method for preparing an inorganic non-metallic plate material for an ocean trade container according to claim 1, wherein the polymer in the step 3 is a mixture of polyvinyl alcohol, polyacrylamide and glycerol in a mass ratio of 5.
7. The method of claim 1, wherein the quartz sand of step 2 is crushed and sieved before use to obtain a fraction below 1000 mesh and a fraction above 2000 mesh.
8. An inorganic non-metallic sheet for ocean trade containers, which is prepared using the preparation method as claimed in any one of claims 1 to 7.
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| US4363667A (en) * | 1980-04-11 | 1982-12-14 | Imperial Chemical Industries Limited | Cementitious composition and cement produced therefrom |
| CN1052472A (en) * | 1989-12-16 | 1991-06-26 | 湖南省建筑材料研究设计院 | The composition of high-strength cement mortar and goods and manufacture method |
| CN109809778A (en) * | 2019-03-28 | 2019-05-28 | 武汉大学 | Super hardening modified PVA fiber reinforcement sea sand cement-base composite material and preparation method thereof |
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2022
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|---|---|---|---|---|
| US4363667A (en) * | 1980-04-11 | 1982-12-14 | Imperial Chemical Industries Limited | Cementitious composition and cement produced therefrom |
| CN1052472A (en) * | 1989-12-16 | 1991-06-26 | 湖南省建筑材料研究设计院 | The composition of high-strength cement mortar and goods and manufacture method |
| CN109809778A (en) * | 2019-03-28 | 2019-05-28 | 武汉大学 | Super hardening modified PVA fiber reinforcement sea sand cement-base composite material and preparation method thereof |
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