CN115197582A - Preparation method of novel modified polyester model sand - Google Patents
Preparation method of novel modified polyester model sand Download PDFInfo
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- CN115197582A CN115197582A CN202211092262.6A CN202211092262A CN115197582A CN 115197582 A CN115197582 A CN 115197582A CN 202211092262 A CN202211092262 A CN 202211092262A CN 115197582 A CN115197582 A CN 115197582A
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- 239000004576 sand Substances 0.000 title claims abstract description 158
- 229920000728 polyester Polymers 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 132
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 17
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000001450 anions Chemical class 0.000 claims abstract description 14
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 14
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 14
- 229920005990 polystyrene resin Polymers 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 13
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004327 boric acid Substances 0.000 claims abstract description 9
- 239000011734 sodium Substances 0.000 claims abstract description 9
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 64
- 238000000227 grinding Methods 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 53
- 238000000465 moulding Methods 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 18
- 239000008187 granular material Substances 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 117
- 239000000203 mixture Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000006004 Quartz sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 229940099259 vaseline Drugs 0.000 description 2
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
A novel preparation method of modified polyester model sand comprises the following steps: 1-5kg of cast stone powder, 5-10kg of sodium fluosilicate, 10-15kg of boric acid and 15-25kg of anion resin, wherein the density of the anion resin is 1.22 g/cm3, the density of the crosslinked polyacrylonitrile is 1.15 g/cm3, the density of the ion exchange resin is 10-15kg, the density of the ion exchange resin is 1.35 g/cm3, the density of the polystyrene resin is 5-10kg, wherein the density of the polystyrene resin is 1.55 g/cm3, 15-30kg of superfine active calcium carbonate is stable in physicochemical property, can not be decayed, is high in strength and can be recycled, the viscosity of the model sand raw material is further optimized, the model sand can be modified according to different use environments, the standard requirements of various use environments are met, the application range is wide, the recycling rate is high, the cost of the model sand is obviously reduced, the environment is friendly, the model sand can be suitable for the manufacturing process of different model sands, and can play a role in protecting the environment.
Description
Technical Field
The invention relates to the field of preparation methods of model sand, in particular to a preparation method of irregular-shaped fine particle modified polyester model sand.
Background
Model sand is needed to be used in places where models need to be used, with the development of the times, the development of the model sand is promoted by the progress of all aspects of society, various model sands are applied to model tests, common model sands can be basically divided into three types of organic materials, inorganic materials and synthetic materials, heavy sand requires the model sand to be very fine in particle size, the model sand is difficult to process and very fine in particle size, phenomena of over-high viscosity, flocculation and the like can occur, test results are distorted, a general plain river sediment model is a metamorphosis model with a starting flow rate larger than a ruler and a roughness rate smaller than the ruler, the model sand is required to be small in starting flow rate, the relative roughness rate of the bed surface is larger, therefore, light sand is mostly used, light sand made of organic materials is good in hydraulic property and high in applicability, but general sawdust and walnut shells are easy to rot and deteriorate, the work load of anticorrosion treatment is large, the particle shape is not good when the particle size is larger, the particle size is not beneficial to reuse, model sand raw material needs to be used in places where the model sand needs to be good in quality, and is directly related to the preparation effect of the model sand in the existing model sand preparation method, and the existing technology, the problem of the model sand is that the original sand is poor in the adhesion of the existing model sand is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a preparation method of irregular-shaped fine particle modified polyester model sand for enhancing the cohesiveness of the model sand raw material.
The technical scheme adopted by the invention for solving the technical problems is as follows: a novel preparation method of modified polyester model sand comprises the following steps: 1-5kg of cast stone powder, 5-10kg of sodium fluosilicate, 10-15kg of boric acid and 15-25kg of anion resin, wherein the density of the anion resin is 1.22 g/cm 3 10-20kg of cross-linked polyacrylonitrile, wherein the density of the cross-linked polyacrylonitrile is 1.15 g/cm 3 10-15kg of ion exchange resin, wherein the density of the ion exchange resin is 1.35 g/cm 3 5-10kg of polystyrene resin, wherein the density of the polystyrene resin is 1.55 g/cm 3 15-30kg of superfine active calcium carbonate, wherein the density of the superfine active calcium carbonate is 1.25g/cm 3 The rest is colorant and adhesive, the density of the model sand raw material can be selected according to the requirement, and the component ratio of the model sand raw material is controlled to be 1.1-1.5 g/cm 3 ；
Preparing a model sand raw material: selecting and weighing the model sand raw material to prepare the model sand raw material, selecting 3.5kg of cast stone powder, 7kg of sodium fluosilicate, 12kg of boric acid, 16kg of anion resin, 12kg of cross-linked polyacrylonitrile, 11kg of ion exchange resin, 7kg of polystyrene resin, 18kg of superfine active calcium carbonate and the balance of colorant and adhesive, wherein the density of the model sand raw material is controlled to be 1.1-1.5 g/cm 3 ；
Mixing the model sand raw materials, mixing and stirring the materials by using a mixing stirring box during mixing, controlling the mixing stirring time to be 1-2 hours, standing the raw materials, wherein the model sand raw materials are brittle, and the model sand raw materials formed by grinding are irregular in angular shapes.
Sieving the model sand raw material after standing, adopting a vibrating screen during sieving, separating impurities in the raw material from the raw material by using the vibrating screen, and further refining raw material particles;
and screening the screened model sand raw material, putting the model sand raw material into a screening machine, and screening the particle size to form a plurality of groups of uniform model sand with basically similar particle sizes in a certain particle size interval.
Model husky raw materials grind, handle through three processes of grinding when grinding, adopt the large granule mill to grind when first process of grinding, be provided with the rough surface of big granule on the large granule mill, utilize the rough surface of large granule to grind first process that the husky raw materials of model can be carried out.
The model sand raw material is ground through the first procedure, then ground through the second procedure, when the second procedure is ground, the small-particle grinding disc is adopted, the coarse surface of the small particles is arranged on the small-particle grinding disc, and the coarse surface of the small particles is utilized to grind through the second procedure of the model sand raw material.
And grinding the model sand raw material in a third procedure, namely grinding the model sand raw material by using a small-particle grinding disc, adding a wear-resisting agent into the model sand raw material during grinding, wherein the wear-resisting agent is an electroceramic particulate matter, and then grinding the model sand raw material for 1-2 hours by using the small-particle grinding disc.
The method comprises the steps of grinding a model sand raw material to form small-particle model sand, detecting physical characteristics of the model sand raw material, grinding the model sand by using a particle grinding head during detection, analyzing the structure and material performance of the ground model sand raw material, and forming an analysis and detection report according to an analysis result.
The model sand raw material is subjected to hydrodynamic characteristic test, particle volume weight and grading test, settling velocity test, starting flow velocity test and underwater repose angle test are adopted during the test, and the model sand raw material subjected to hydrodynamic characteristic test is subjected to raw material storage and forming treatment.
The sand model is characterized in that the sand model raw material is subjected to molding treatment, a molding die is adopted during the molding treatment, the sand model raw material is guided into the molding die, the molding die is used for molding the model, drying treatment is carried out after molding, and shaping treatment of the outer surface is carried out after drying treatment.
Compared with the prior art, the invention has the following beneficial effects: compared with other model sands, the preparation method of the model sand is suitable for a general sediment model, the volume weight and the particle size of the particles can be adjusted, the volume weight and the particle size range of the particles are further improved, the physicochemical property of the model sand is stable, the model sand is not rotten and deteriorated, the strength is high, the model sand can be recycled, the cohesiveness of the model sand raw material is further optimized, the model sand can be specifically modified according to different use environments, the model sand meets the standard requirements of various use environments, the application range is wide, the recycling rate is high, the cost of the model sand is obviously reduced, the method is environment-friendly, the method can be suitable for the manufacturing process of different model sands, and the environment can be protected.
Detailed Description
The present invention is further described below, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment.
Example 1
A novel preparation method of modified polyester model sand comprises the following steps: 1-5kg of cast stone powder, 5-10kg of sodium fluosilicate, 10-15kg of boric acid and 15-25kg of anion resin, wherein the density of the anion resin is 1.22 g/cm 3 10-20kg of crosslinked polyacrylonitrile, wherein the density of the crosslinked polyacrylonitrile is 1.15 g/cm 3 10-15kg of ion exchange resin, wherein the density of the ion exchange resin is 1.35 g/cm 3 5-10kg of polystyrene resin, wherein the density of the polystyrene resin is 1.55 g/cm 3 15-30kg of superfine active calcium carbonate, wherein the density of the superfine active calcium carbonate is 1.25g/cm 3 The rest is colorant and adhesive, the density of the model sand raw material can be selected according to the requirement, and the component ratio of the model sand raw material is controlled to be 1.1-1.5 g/cm 3 ；
Preparing a model sand raw material: the above model is usedSelecting and weighing sand raw materials to prepare model sand raw materials, selecting 3.8kg of cast stone powder, 7.5kg of sodium fluosilicate, 11.5kg of boric acid, 15.5kg of anion resin, 12kg of cross-linked polyacrylonitrile, 10.3kg of ion exchange resin, 7.5kg of polystyrene resin, 15.5kg of superfine active calcium carbonate and the balance of colorant and adhesive, wherein the density of the model sand raw materials is controlled to be 1.1-1.5 g/cm 3 ；
Weighing the raw materials, adding an adhesive, wherein the adhesive can be viscous powder ceramic particle powder, the viscous powder is a mixture of vaseline, silicone oil and quartz sand, adding the ceramic powder into the mixture to form the adhesive, and putting the adhesive into a molding sand raw material for pretreatment;
mixing the model sand raw materials, adopting a mixing stirring box to mix and stir the mixture in the mixing process, controlling the mixture stirring process within 1-2 hours, then standing the raw materials, wherein the model sand raw materials are brittle, and the model sand raw materials formed by grinding are irregular in angular shape.
Sieving the model sand raw material after standing, adopting a vibrating screen during sieving, separating impurities in the raw material from the raw material by using the vibrating screen, and further refining raw material particles;
and screening the screened model sand raw material, putting the model sand raw material into a screening machine, and screening the particle size to form a plurality of groups of uniform model sand with basically similar particle sizes in a certain particle size interval.
Model husky raw materials grind, handle through three processes of grinding when grinding, adopt the large granule mill to grind when first process of grinding, be provided with the rough surface of big granule on the large granule mill, utilize the rough surface of large granule to grind first process that the husky raw materials of model can be carried out.
The model sand raw material is ground through the first procedure, then the model sand raw material is ground through the second procedure, when the model sand raw material is ground through the second procedure, the small-particle grinding disc is adopted, the small-particle rough surface is arranged on the small-particle grinding disc, and the model sand raw material is ground through the second procedure through the small-particle rough surface.
And grinding the model sand raw material in a third procedure, wherein a small-particle grinding disc is adopted for grinding, a wear-resisting agent is added into the model sand raw material during grinding, the wear-resisting agent is an electroceramic particulate matter, and then the model sand raw material is ground for 1 hour by the small-particle grinding disc.
The method comprises the steps of grinding a model sand raw material to form small-particle model sand, detecting physical characteristics of the model sand raw material, grinding the model sand by using a particle grinding head during detection, analyzing the structure and material performance of the ground model sand raw material, and forming an analysis and detection report according to an analysis result.
The model sand raw material is subjected to hydrodynamic characteristic test, particle volume weight and grading test, a settling velocity test, a starting flow velocity test and an underwater angle of repose test are adopted during the test, and the model sand raw material subjected to the hydrodynamic characteristic test is subjected to raw material storage and forming treatment.
The sand model is characterized in that the sand model raw material is subjected to molding treatment, a molding die is adopted during the molding treatment, the sand model raw material is guided into the molding die, the molding die is used for molding the model, drying treatment is performed after molding, and shaping treatment of the outer surface is performed after drying treatment.
Example 2
A novel preparation method of modified polyester model sand comprises the following steps: 1-5kg of cast stone powder, 5-10kg of sodium fluosilicate, 10-15kg of boric acid and 15-25kg of anion resin, wherein the density of the anion resin is 1.22 g/cm 3 10-20kg of cross-linked polyacrylonitrile, wherein the density of the cross-linked polyacrylonitrile is 1.15 g/cm 3 10-15kg of ion exchange resin, wherein the density of the ion exchange resin is 1.35 g/cm 3 5-10kg of polystyrene resin, wherein the density of the polystyrene resin is 1.55 g/cm 3 15-30kg of superfine active calcium carbonate, wherein the density of the superfine active calcium carbonate is 1.25g/cm 3 The balance of colorant and binder;
preparing a model sand raw material: selecting the model sand raw materialWeighing to prepare raw materials of the model sand, selecting 4.5kg of cast stone powder, 8.6kg of sodium fluosilicate, 13.2kg of boric acid, 16.2kg of anion resin, 12.2kg of cross-linked polyacrylonitrile, 11.2kg of ion exchange resin, 8.1kg of polystyrene resin, 16.3kg of superfine active calcium carbonate and the balance of colorant and adhesive, wherein the density of the raw materials of the model sand can be selected according to the requirement, and the component ratio of the raw materials of the model sand is controlled to be 1.1-1.5 g/cm 3 ；
Weighing the raw materials, adding an adhesive, wherein the adhesive can be viscous powder ceramic particle powder, the viscous powder is a mixture of vaseline, silicone oil and quartz sand, adding the ceramic powder into the mixture to form the adhesive, and putting the adhesive into a molding sand raw material for pretreatment;
mixing the model sand raw materials, mixing and stirring the materials by using a mixing and stirring box during mixing, controlling the mixing and stirring time to be 1.5 hours, and then standing the raw materials;
sieving the model sand raw material after standing, adopting a vibrating screen during sieving, separating impurities in the raw material from the raw material by using the vibrating screen, and further refining raw material particles;
and screening the screened model sand raw material, putting the model sand raw material into a screening machine, and screening the size of particles to form a plurality of groups of uniform model sand with basically similar particle sizes in a certain particle size interval.
Model husky raw materials grind, handle through three processes of grinding when grinding, adopt the large granule mill to grind when first process of grinding, be provided with the rough surface of big granule on the large granule mill, utilize the rough surface of large granule to grind first process that the husky raw materials of model can be carried out.
The model sand raw material is ground through the first procedure, then ground through the second procedure, when the second procedure is ground, the small-particle grinding disc is adopted, the coarse surface of the small particles is arranged on the small-particle grinding disc, and the coarse surface of the small particles is utilized to grind through the second procedure of the model sand raw material.
And grinding the model sand raw material in a third procedure, wherein a small-particle grinding disc is adopted for grinding, a wear-resisting agent is added into the model sand raw material during grinding, the wear-resisting agent is an electric ceramic particle, and then the model sand raw material is ground for 1.5 hours by using the small-particle grinding disc.
The method comprises the steps of grinding a model sand raw material to form small-particle model sand, detecting physical characteristics of the model sand raw material, grinding the model sand by using a particle grinding head during detection, analyzing the structure and material performance of the ground model sand raw material, and forming an analysis and detection report according to an analysis result.
The model sand raw material is subjected to hydrodynamic characteristic test, particle volume weight and grading test, a settling velocity test, a starting flow velocity test and an underwater angle of repose test are adopted during the test, and the model sand raw material subjected to the hydrodynamic characteristic test is subjected to raw material storage and forming treatment.
The sand model is characterized in that the sand model raw material is subjected to molding treatment, a molding die is adopted during the molding treatment, the sand model raw material is guided into the molding die, the molding die is used for molding the model, drying treatment is performed after molding, and shaping treatment of the outer surface is performed after drying treatment.
Claims (7)
1. A novel preparation method of modified polyester model sand is characterized by comprising the following steps:
selecting a model sand raw material: 1-5kg of cast stone powder, 5-10kg of sodium fluosilicate, 10-15kg of boric acid and 15-25kg of anion resin, wherein the density of the anion resin is 1.22 g/cm 3 10-20kg of cross-linked polyacrylonitrile, wherein the density of the cross-linked polyacrylonitrile is 1.15 g/cm 3 10-15kg of ion exchange resin, wherein the density of the ion exchange resin is 1.35 g/cm 3 5-10kg of polystyrene resin, wherein the density of the polystyrene resin is 1.55 g/cm 3 15-30kg of superfine active calcium carbonate, wherein the density of the superfine active calcium carbonate is 1.25g/cm 3 The balance of colorant and binder;
preparing a model sand raw material: selecting the model sand raw materialPreparing model sand raw materials by weighing and selecting 3.5kg of cast stone powder, 7kg of sodium fluosilicate, 12kg of boric acid, 16kg of anion resin, 12kg of crosslinked polyacrylonitrile, 11kg of ion exchange resin, 7kg of polystyrene resin, 18kg of superfine active calcium carbonate and the balance of colorant and adhesive, wherein the density of the model sand raw materials can be selected according to the requirement, and the component ratio of the model sand raw materials is controlled to be 1.1-1.5 g/cm 3 ；
Mixing the model sand raw materials, mixing and stirring the materials by using a mixing and stirring box during mixing, controlling the mixing and stirring time to be 1-2 hours, and then standing the raw materials;
sieving the model sand raw material after standing, adopting a vibrating screen during sieving, separating impurities in the raw material from the raw material by using the vibrating screen, and further refining raw material particles;
and screening the screened model sand raw material, putting the model sand raw material into a screening machine, and screening the size of particles to form a plurality of groups of uniform model sand with basically similar particle sizes in a certain particle size interval.
2. The method for preparing the novel modified polyester model sand as claimed in claim 1, wherein the method comprises the following steps: model husky raw materials grind, handle through three processes of grinding when grinding, adopt the large granule mill to grind when first process of grinding, be provided with the rough surface of big granule on the large granule mill, utilize the rough surface of large granule to grind first process that the husky raw materials of model can be carried out.
3. The method for preparing the novel modified polyester model sand as claimed in claim 2, wherein the method comprises the following steps: the model sand raw material is ground through the first procedure, then the model sand raw material is ground through the second procedure, when the model sand raw material is ground through the second procedure, the small-particle grinding disc is adopted, the small-particle rough surface is arranged on the small-particle grinding disc, and the model sand raw material is ground through the second procedure through the small-particle rough surface.
4. The method for preparing the novel modified polyester model sand as claimed in claim 3, wherein the method comprises the following steps: and grinding the model sand raw material in a third procedure, wherein a small-particle grinding disc is adopted for grinding, a wear-resisting agent is added into the model sand raw material during grinding, the wear-resisting agent is an electroceramic particulate matter, then the model sand raw material is ground for 1-2 hours by the small-particle grinding disc, the model sand raw material has brittleness, and the model sand raw material formed by grinding is in an irregular shape with edges and corners.
5. The method for preparing the novel modified polyester model sand as claimed in claim 4, wherein the method comprises the following steps: the method comprises the steps of grinding a model sand raw material to form small-particle model sand, detecting physical characteristics of the model sand raw material, grinding the model sand by using a particle grinding head during detection, analyzing the structure and material performance of the ground model sand raw material, and forming an analysis and detection report according to an analysis result.
6. The method for preparing the novel modified polyester model sand as claimed in claim 4, wherein the method comprises the following steps: the model sand raw material is subjected to hydrodynamic characteristic test, particle volume weight and grading test, a settling velocity test, a starting flow velocity test and an underwater angle of repose test are adopted during the test, and the model sand raw material subjected to the hydrodynamic characteristic test is subjected to raw material storage and forming treatment.
7. The method for preparing the novel modified polyester model sand as claimed in claim 6, wherein the method comprises the following steps: the sand model is characterized in that the sand model raw material is subjected to molding treatment, a molding die is adopted during the molding treatment, the sand model raw material is guided into the molding die, the molding die is used for molding the model, drying treatment is carried out after molding, and shaping treatment of the outer surface is carried out after drying treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211092262.6A CN115197582A (en) | 2022-09-08 | 2022-09-08 | Preparation method of novel modified polyester model sand |
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| CN202211092262.6A CN115197582A (en) | 2022-09-08 | 2022-09-08 | Preparation method of novel modified polyester model sand |
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| CN115197582A true CN115197582A (en) | 2022-10-18 |
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| CN101955612A (en) * | 2010-06-22 | 2011-01-26 | 长江水利委员会长江科学院 | Composite plastic model sand for sediment solid model experiment and preparation method thereof |
| CN114993782A (en) * | 2022-05-07 | 2022-09-02 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Preparation method of irregular-shape fine particle modified polyester model sand |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955612A (en) * | 2010-06-22 | 2011-01-26 | 长江水利委员会长江科学院 | Composite plastic model sand for sediment solid model experiment and preparation method thereof |
| CN114993782A (en) * | 2022-05-07 | 2022-09-02 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Preparation method of irregular-shape fine particle modified polyester model sand |
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Application publication date: 20221018 |