CN114477895A - Inorganic artificial stone imitating natural marble texture and preparation process thereof - Google Patents
Inorganic artificial stone imitating natural marble texture and preparation process thereof Download PDFInfo
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- CN114477895A CN114477895A CN202111682665.1A CN202111682665A CN114477895A CN 114477895 A CN114477895 A CN 114477895A CN 202111682665 A CN202111682665 A CN 202111682665A CN 114477895 A CN114477895 A CN 114477895A
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- 239000002969 artificial stone Substances 0.000 title claims abstract description 119
- 239000004579 marble Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 239000006004 Quartz sand Substances 0.000 claims abstract description 25
- 239000000049 pigment Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 9
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims abstract description 5
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 50
- 239000000839 emulsion Substances 0.000 claims description 21
- 239000010453 quartz Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 19
- 229920002748 Basalt fiber Polymers 0.000 claims description 15
- 239000003365 glass fiber Substances 0.000 claims description 13
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229910021487 silica fume Inorganic materials 0.000 claims description 8
- 239000012745 toughening agent Substances 0.000 claims description 8
- 239000002174 Styrene-butadiene Substances 0.000 claims description 7
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical group C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 7
- 239000011115 styrene butadiene Substances 0.000 claims description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 7
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005303 weighing Methods 0.000 abstract description 8
- 238000005034 decoration Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 1
- 229920005646 polycarboxylate Polymers 0.000 abstract 1
- 238000003892 spreading Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 27
- 238000010521 absorption reaction Methods 0.000 description 16
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 238000009826 distribution Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 230000036571 hydration Effects 0.000 description 6
- 238000006703 hydration reaction Methods 0.000 description 6
- 239000002956 ash Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000002928 artificial marble Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000005476 size effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012999 compression bending Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011439 engineered stone Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/54—Substitutes for natural stone, artistic materials or the like
- C04B2111/542—Artificial natural stone
- C04B2111/545—Artificial marble
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Abstract
The application relates to the technical field of building decoration materials, and particularly discloses an inorganic artificial stone imitating natural marble textures and a preparation process thereof. The inorganic artificial stone imitating the texture of natural marble is prepared from the following raw materials in parts by weight: 30-36 parts of quartz sand, 1-3 parts of quartz sand, 13-15 parts of cement, 2-4 parts of active additive, 3-5 parts of water, 0.3-0.6 part of polycarboxylate water reducer, 0.6-1.8 parts of flexibilizer and 0.2-0.4 part of pigment; the pigment is one or a combination of titanium dioxide, iron black powder, iron red powder, iron yellow powder and iron brown powder. The preparation process comprises the following steps: weighing the raw materials in parts by weight, uniformly stirring, distributing, spreading pigment, cutting, mixing, vacuum vibrating, pressing, molding and maintaining. The application provides a preparation technology of inorganic rostone of imitative natural marble texture spills pigment through the vibration and realizes the texture effect, uses in the preparation of inorganic rostone, and this preparation technology is simple, and the marble texture distributes clearly, naturally.
Description
Technical Field
The application relates to the technical field of building decoration materials, in particular to an inorganic artificial stone imitating natural marble textures and a preparation process thereof.
Background
The marble has beautiful color and pattern, higher compressive strength and good physical and chemical properties, wide resource distribution and easy processing, and the application range of the marble is continuously expanded along with the development of economy. With the increasing requirements of people on environmental protection, natural marble can not meet the use requirements of people due to the fact that radium, thorium and potassium radioactive elements contained in natural stone can generate radioactive substances in decay, and certain radioactivity exists.
The artificial stone is a new product which develops rapidly in the stone in recent years, and is a blank (block or plate) material for building decorative facing, which is formed by mixing natural stone waste or building rubbish with organic resin or inorganic binder, filler, inorganic auxiliary agent, inorganic pigment and the like, then carrying out vacuum pressing forming, curing and curing for a certain time at normal temperature, then carrying out cutting, thickness setting, polishing and other processing, and finally preparing decorative plates with various specifications. The resin type artificial stone has a large thermal expansion coefficient, and is easy to crack, arch and the like in the using process. The non-resin artificial stone uses cement as a bonding agent, has more environment-friendly generation process, good durability and strong aging resistance, and can be used indoors and outdoors.
Because the requirements of different application scenes on the artificial stone decorative plate are different, the existing inorganic artificial stone imitating the marble texture adopts solid waste aggregate, and the applicability of a characteristic scene cannot be met due to the characteristics of the appearance and the color.
Disclosure of Invention
In order to overcome the defect that the existing inorganic artificial marble stone is not strong in applicability, the application provides an inorganic artificial stone imitating natural marble textures and a preparation process thereof.
In a first aspect, the present application provides an inorganic artificial stone imitating natural marble texture, which adopts the following technical scheme: an inorganic artificial stone imitating natural marble textures is prepared from the following raw materials in parts by weight: the composition is prepared from the following raw materials in parts by weight: 30-36 parts of quartz sand; 1-3 parts of quartz powder; 13-15 parts of cement; 2-4 parts of an active additive; 0.3-0.6 part of a polycarboxylic acid water reducing agent; 0.6-1.8 parts of a toughening agent; 0.2-0.4 part of pigment; 3-5 parts of water; the pigment is one or a combination of titanium dioxide, iron black powder, iron red powder, iron yellow powder and iron brown powder.
By adopting the technical scheme, the quartz sand is used as the aggregate, the quartz powder is used as the filler, and the cement is used as the adhesive, so that on one hand, the thermal expansion coefficient of the artificial stone can be reduced, and on the other hand, the whole artificial stone is more compact and has fine textures by matching the quartz sand and the quartz powder, and the textures are more abundant in layering, thereby being closer to the natural marble textures; by adding the polycarboxylic acid water reducing agent, the early strength performance of the cement can be improved, the binding property of the cement is improved while the water consumption is reduced, and the integral compactness and compressive strength of the artificial stone are improved; different pigments can be added according to the requirements to prepare artificial stones with similar texture and color to the natural marble so as to meet the requirements of different scenes; the artificial stone with imitated natural marble texture prepared by the application formula has the advantages that the compressive strength is improved by 14.5%, the flexural strength is improved by 14.0%, the water absorption is reduced by 67.5%, and the thermal expansion coefficient is reduced by 91.4%.
Optionally, the inorganic artificial stone imitating the texture of natural marble is prepared from the following raw materials in parts by weight: 33 parts of quartz sand; 1.5 parts of quartz powder; 52.5 parts of cement; 3 parts of active additive; 1.2 parts of a toughening agent; 0.45 part of polycarboxylic acid water reducing agent; 0.2 part of pigment; 4 parts of water; the pigment is one or a combination of titanium dioxide, iron black powder, iron red powder, iron yellow powder and iron brown powder.
The artificial stone with imitated natural marble texture prepared by the application formula has the advantages that the compressive strength is improved by 20.9%, the flexural strength is improved by 28.0%, the water absorption is reduced by 80.0%, and the thermal expansion coefficient is reduced by 91.2%.
Optionally, the particle size range of the quartz sand is 40 meshes to 120 meshes.
Through adopting above-mentioned technical scheme, the quartz sand of different grading can form the rostone of different textures on the one hand, and on the other hand can influence the resistance to compression rupture intensity of rostone.
Optionally, the particle size range of the quartz powder is 200 meshes to 325 meshes.
By adopting the technical scheme, the quartz powder with different grades is used as the filler and filled in the gap between the quartz sand, so that the compactness of the artificial stone is further improved, and the compressive strength is improved.
Optionally, the active additive is one or more of metakaolin, white silica fume and white fly ash.
By adopting the technical scheme, the metakaolin, the white silica fume and the white fly ash can play a good size effect in a cement system, so that the dense accumulation and filling effects of solid particles are formed, the pore size distribution of the artificial stone is further refined, and the bending strength and the compressive strength of the artificial stone are improved.
Optionally, the toughening agent is styrene-butadiene emulsion or styrene-acrylic emulsion with the solid content of 40-50%.
By adopting the technical scheme, the butylbenzene emulsion has good water reducing and retaining effects in a cement-based material system, can obviously reduce the water absorption of capillary pores, improves the toughness and further improves the compression and fracture resistance of the artificial stone; the styrene-acrylic emulsion can also improve the toughness, shrinkage and impermeability of the mortar.
Optionally, the raw materials further comprise 0.5-1 part by weight of glass fiber or basalt fiber or combined fiber thereof.
Through adopting above-mentioned technical scheme, mix the fibre and can increase the resistance to compression bending ability of cement, bear load with the cement base together to reduce the expansion of cement crazing line, thereby promote the durability of rostone.
In a second aspect, the present application provides a process for preparing the inorganic artificial stone imitating the texture of natural marble, comprising the following steps:
s1, uniformly mixing quartz sand, quartz powder, cement and an active additive to prepare a mixture A;
s2, uniformly mixing water and the water reducing agent, adding the mixture into the mixture A prepared in the S1, and uniformly stirring to prepare a mixture B;
and S3, adding the cement into the mixture B prepared in the S2, and uniformly stirring to prepare a mixture C.
S4, flatly laying the stirred mixed material C in a mould;
s5, uniformly scattering the prepared pigment on the tiled material, and rolling by using a roller to combine the pigment with the mixed material C;
s6, cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mold, and then carrying out vacuum vibration pressing to obtain inorganic artificial stone blank plates with various textures;
s7, performing steam curing on the pressed inorganic artificial stone blank plate for 8 hours, then performing natural curing, and performing fixed-thickness polishing after the total curing time reaches 7 days to obtain the inorganic artificial stone imitating the texture of the natural marble; maintaining and heating for 2 hours, keeping the temperature for 6 hours, and cooling for 2 hours, wherein the constant temperature is 50-60 ℃.
By adopting the technical scheme, the preparation method and conditions are simple, and the method is suitable for industrial mass production.
Optionally, the stirring time in the S1 is 5-6 min; the stirring time in the S2 is 2-4 min; and the stirring time in the S3 is 2-3 min.
By adopting the technical scheme: under this condition, the mixture of raw materials is more even, increases the degree of consistency and the compactness of the follow-up suppression of rostone, promotes the uniformity and the quality of rostone material.
Optionally, the vacuum vibration pressing conditions in S6 are as follows: the vacuumizing time is 30-60s, the absolute vacuum degree is 0.09-0.1 MPa, the pressure is 300 tons, the vibration frequency is 40-50Hz, and the pressing time is 2-3 min.
By adopting the technical scheme, under the pressing condition, the compressive strength of the inorganic artificial stone is improved by 16-25%, the internal pores are refined, and the pore grading is improved. Non-viable cells
In summary, the present application has the following beneficial effects:
1. the quartz sand is used as aggregate, and the quartz powder is used as filler, so that the permeability of the whole artificial stone is improved, the compactness and the compressive strength of the artificial stone are higher, and the dual requirements of the market on the appearance and the quality of the artificial stone are met;
2. cement is used as a bonding agent, so that the thermal expansion coefficient of the artificial stone is improved, and the durability of the artificial stone is improved;
3. the activity of the adhesive is improved by adding the active additive, the water reducing agent and the toughening agent, so that the compressive strength, the flexural strength and the durability of the artificial stone are improved.
Detailed Description
The present application will be described in further detail with reference to examples. The special description is as follows: the following examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer, and the starting materials used in the following examples were obtained from ordinary commercial sources unless otherwise specified.
Preparation example of inorganic artificial stone imitating marble
Examples
Example 1
An inorganic artificial stone imitating natural marble textures is prepared by the following steps:
s1, weighing 30kg of quartz sand, 1kg of quartz powder, 13kg of P.W52.5 white cement and 2kg of metakaolin, adding into a stirrer, and stirring for 5min to obtain a mixture A;
s2, adding 3kg of water and 0.3kg of polycarboxylic acid water reducing agent into the stirrer, and mixing and stirring the mixture and the mixture A for 2min to obtain a mixture B;
s3, adding 0.6kg of butylbenzene emulsion with the solid content of 40-50% into the stirrer, mixing with the mixture B, and stirring for 2min to obtain a mixture C;
and S4 cloth: flatly laying the mixture C in a die, and rolling by using a roller;
s5 powdering: 0.2kg of titanium dioxide is uniformly scattered on the tiled material through a 60-mesh sieve, and the mixture is rolled by a roller, so that the pigment is combined with the blank;
s6 forming: cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mould, and then carrying out vacuum vibration pressing for 30s, wherein the absolute pressure is 0.09MPa, the pressure is 300 tons, the vibration frequency is 40Hz, and the pressing time is 2min to obtain the inorganic artificial stone blank plate with various textures;
s7 maintenance: performing steam curing on the pressed inorganic artificial stone blank plate, wherein the temperature is increased for 2h, the constant temperature is 6h, the temperature is reduced for 2h, the constant temperature is 50 ℃, and the thickness is fixed and the inorganic artificial stone blank plate is polished to obtain the natural marble-imitated inorganic artificial stone
Wherein, the particle size grading distribution of the quartz sand is as follows: by mass, 40 meshes of 30 percent, 60 meshes of 15 percent, 80 meshes of 10 percent and 100 meshes of 15 percent; 30 percent of 120 meshes. The particle size grading distribution of the quartz powder is as follows: 200 meshes 24%, 220 meshes 16%, 240 meshes 16%, 260 meshes 14%, 280 meshes 16%, 300 meshes 325 meshes 24%.
Example 2
An inorganic artificial stone imitating natural marble textures is prepared by the following steps:
s1, weighing 33kg of quartz sand, 1.5kg of quartz powder, 14kg of P.W 52.5.5 kg of white cement and 3kg of metakaolin, adding into a stirrer, and stirring for 6min to obtain a mixture A;
s2, adding 4kg of water and 0.45kg of polycarboxylic acid water reducing agent into the stirrer, and mixing and stirring the mixture and the mixture A for 3min to obtain a mixture B;
s3, adding 1.2kg of butylbenzene emulsion with the solid content of 40-50% into the stirrer, mixing with the mixture B, and stirring for 3min to obtain a mixture C;
s4, material distribution: flatly laying the mixture C in a die, and rolling by using a roller;
s5 powdering: 0.2kg of titanium dioxide is uniformly scattered on the tiled material through a 60-mesh sieve, and the mixture is rolled by a roller, so that the pigment is combined with the blank;
s6 forming: cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mould, and then carrying out vacuum vibration pressing for 45s, wherein the absolute pressure is 0.1MPa, the pressure is 300 tons, the vibration frequency is 45Hz, and the pressing time is 2min to obtain the inorganic artificial stone blank plate with various textures;
s7 maintenance: and (3) performing steam curing on the pressed inorganic artificial stone blank plate, wherein the temperature is increased for 2 hours, the constant temperature is 6 hours, the temperature is reduced for 2 hours, the constant temperature is 55 ℃, and the thickness is fixed and the inorganic artificial stone imitating the natural marble is obtained by polishing.
Wherein, the particle size grading distribution of the quartz sand is as follows: by mass, 40 meshes of 30 percent, 60 meshes of 15 percent, 80 meshes of 10 percent and 100 meshes of 15 percent; 30 percent of 120 meshes. The particle size grading distribution of the quartz powder is as follows: 200 meshes 24%, 220 meshes 16%, 240 meshes 16%, 260 meshes 14%, 280 meshes 16%, 300 meshes 325 meshes 24%.
Example 3
An inorganic artificial stone imitating natural marble textures is prepared by the following steps:
s1 weighing 36kg of quartz sand, 3kg of quartz powder, 15kg of P.W 52.5.5 kg of white cement and 4kg of metakaolin, adding into a stirrer, and stirring for 5min to obtain a mixture A;
s2, adding 5kg of water and 0.6kg of polycarboxylic acid water reducing agent into the stirrer, and mixing and stirring the mixture A for 2.5min to obtain a mixture B;
s3, adding 1.8kg of butylbenzene emulsion with the solid content of 40-50% into the stirrer, mixing with the mixture B, and stirring for 2.5min to obtain a mixture C;
and S4 cloth: flatly laying the mixture C in a die, and rolling by using a roller;
s5 powdering: 0.4kg of titanium dioxide is uniformly scattered on the tiled material through a 60-mesh sieve, and the mixture is rolled by a roller, so that the pigment is combined with the blank;
s6 forming: cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mould, and then carrying out vacuum vibration pressing for 60s, wherein the absolute pressure is 0.12MPa, the pressure is 300 tons, the vibration frequency is 60Hz, and the pressing time is 2min to obtain the inorganic artificial stone blank plate with various textures;
s7 maintenance: and (3) performing steam curing on the pressed inorganic artificial stone blank plate, wherein the temperature is increased for 2 hours, the constant temperature is 6 hours, the temperature is reduced for 2 hours, the constant temperature is 60 ℃, and the thickness is fixed and the artificial stone is polished to obtain the natural marble-imitated inorganic artificial stone.
Wherein, the particle size grading distribution of the quartz sand is as follows: by mass, 40 meshes of 30 percent, 60 meshes of 15 percent, 80 meshes of 10 percent and 100 meshes of 15 percent; 30 percent of 120 meshes. The particle size grading distribution of the quartz powder is as follows: 200 meshes 24%, 220 meshes 16%, 240 meshes 16%, 260 meshes 14%, 280 meshes 16%, 300 meshes 325 meshes 24%.
Example 4
An inorganic artificial stone imitating natural marble textures is prepared by the following steps:
s1, weighing 35kg of quartz sand, 2kg of quartz powder, 15kg of P.W 52.5.5 kg of white cement and 3kg of metakaolin, adding into a stirrer, and stirring for 6min to obtain a mixture A;
s2, adding 3kg of water and 0.6kg of polycarboxylic acid water reducing agent into the stirrer, and mixing and stirring the mixture and the mixture A for 3min to obtain a mixture B;
s3, adding 1.8kg of butylbenzene emulsion with the solid content of 40-50% into a stirrer, mixing with the mixture B, and stirring for 3min to obtain a mixture C;
and S4 cloth: flatly laying the mixture C in a die, and rolling by using a roller;
s5 powdering: 0.2kg of titanium dioxide is uniformly scattered on the tiled material through a 60-mesh sieve, and the mixture is rolled by a roller, so that the pigment is combined with the blank;
s6 forming: cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mould, and then carrying out vacuum vibration pressing for 60s, wherein the absolute pressure is 0.1MPa, the pressure is 300 tons, the vibration frequency is 60Hz, and the pressing time is 2min to obtain the inorganic artificial stone blank plate with various textures;
s7 maintenance: and (3) performing steam curing on the pressed inorganic artificial stone blank plate, wherein the temperature is raised for 2h, the constant temperature is 6h, the temperature is reduced for 2h, the constant temperature is 60 ℃, and the thickness is fixed and the artificial stone is polished to obtain the natural marble-imitated inorganic artificial stone.
Wherein, the particle size grading distribution of the quartz sand is as follows: by mass, 40 meshes of 30 percent, 60 meshes of 15 percent, 80 meshes of 10 percent and 100 meshes of 15 percent; 30 percent of 120 meshes. The particle size grading distribution of the quartz powder is as follows: 200 meshes 24%, 220 meshes 16%, 240 meshes 16%, 260 meshes 14%, 280 meshes 16%, 300 meshes 325 meshes 24%.
Example 5
Example 5 the process for preparing the inorganic artificial stone having the texture of the imitated natural marble of example 5 is the same as that of example 2 except that the particle size of the quartz sand is 40-60 mesh and the particle size of the quartz powder is 325 mesh.
Example 6
The process for preparing the natural marble-imitated inorganic artificial stone of example 6 is the same as that of example 2 except that white silica fume is used as a reactive additive.
Example 7
The process for preparing the natural marble-imitated inorganic artificial stone of example 7 is the same as that of example 4 except that white fly ash is used as a reactive additive.
Example 8
The preparation process of the inorganic artificial stone imitating the texture of natural marble in example 8 is the same as that in example 2, except that white fly ash in the mass ratio of (1: 1: 0.5): white silica fume: metakaolin mixtures are used as active additives.
Example 9
The preparation process of the inorganic artificial stone with imitated natural marble texture in the embodiment 9 is the same as that in the embodiment 2, and the difference is that styrene-acrylic emulsion with the solid content of 40-50% is adopted as a toughening agent.
Example 10
The natural marble-imitated texture inorganic artificial stone of example 10 is different from example 2 in that 0.5kg of glass fiber having a diameter of 18um and a length of 10mm is further added between step S1 and step S2 and stirred for 4 min.
Example 11
The natural marble-imitated texture inorganic artificial stone of example 11 is different from example 2 in that 0.5kg of basalt fiber having a diameter of 18um and a length of 10mm is further added between step S1 and step S2 and stirred for 4 min.
Example 12
The natural marble-imitated inorganic artificial stone of example 12 is different from example 2 in that 1kg of glass fiber having a diameter of 10um and a length of 15mm is further added between step S1 and step S2 and stirred for 4 min.
Example 13
The natural marble-imitated texture inorganic artificial stone of example 13 is different from example 2 in that 1kg of basalt fiber having a diameter of 10um and a length of 15mm is further added between step S1 and step S2 and stirred for 4 min.
Example 14
The artificial stone having imitated natural marble texture of example 14 is different from example 2 in that 0.5kg of glass fiber having a diameter of 18um and a length of 10mm and 0.5kg of basalt fiber having a diameter of 18um and a length of 10mm are further added between step S1 and step S2 and stirred for 4 min.
Example 15
The natural marble-imitated inorganic artificial stone of example 15 is different from example 10 in that step S3 is omitted.
Example 16
The natural marble-imitated inorganic artificial stone of example 16 is different from example 11 in that step S3 is omitted.
Comparative example 1
The artificial marble solid plane materiel comprises the following manufacturing steps,
a. firstly, preparing a main raw material and an auxiliary color raw material, and then fully mixing the main raw material and the auxiliary color raw material;
b. connecting the pipelines respectively, and correspondingly connecting the pipelines to the auxiliary color raw material box of the main raw material box;
c. setting pouring parameters of the main raw material and the auxiliary color raw material;
d. fully pouring the set raw materials into a processing mold, fully sintering, taking out the raw materials in the mold, and then cutting the plate;
e. sanding and grinding the cut raw materials;
f. inspecting appearance, sticking protective film, and packaging.
In the step a, the main material formula comprises 12 parts of unsaturated polyester, 3 parts of quartz sand, 4 parts of calcite powder, 1.5 parts of crushed marble, 7 parts of granite, 4 parts of gypsum and 30 parts of water; the preparation method comprises weighing the raw materials according to the required proportion, pulverizing the raw materials, sieving with 600 mesh sieve, adding water, mixing, stirring at 120r/min, temperature of 105 deg.C, and stirring viscosity of 6.5-9.5Pa.S/35 deg.C.
The auxiliary color raw material comprises 0.1 part of pigment, 0.4 part of antioxidant, 1.4 parts of curing agent and 1.2 parts of sintering agent, wherein the pigment is cinnabar, and the preparation method comprises the following steps of fully stirring the pigment, the antioxidant, the curing agent and the sintering agent, controlling the stirring speed at 85r/min, keeping the temperature at 90 ℃ and keeping the stirring speed for 15 min.
Comparative example 2, and the difference between the comparative example 2 and the example 2 is that the step of S6 forming is to cut the rolled material into a plurality of strip-shaped mixed materials with different lengths, turn the strip-shaped mixed materials on one side and randomly place the strip-shaped mixed materials in a mould, then carry out vacuum pressing, and obtain the inorganic artificial stone blank board with various textures by vacuumizing for 60S, wherein the absolute pressure is 0.1MPa, the pressure is 300 tons, and the pressing time is 2 min.
Comparative example 3
The natural marble-imitated inorganic artificial stone of comparative example 3 is different from example 10 in that the glass fiber is added in an amount of 0.4 parts.
Comparative example 4
The natural marble-imitated inorganic artificial stone of comparative example 4 is different from example 10 in that the glass fiber is added in an amount of 1.2 parts.
Comparative example 5
The natural marble-imitated inorganic artificial stone of comparative example 5 is different from example 11 in that basalt fiber is added in an amount of 0.4 parts.
Comparative example 6
The natural marble-imitated inorganic artificial stone of comparative example 6 is different from example 11 in that basalt fiber is added in an amount of 1.2 parts.
Performance testing
The inorganic artificial stones obtained in examples 1 to 16 and comparative examples 1 to 6 were subjected to appearance evaluation and tests of flexural strength, compressive strength, water absorption and thermal expansion coefficient, and the test data are shown in table 2.
Detection method
Appearance evaluation
TABLE 1 appearance evaluation criteria
Breaking strength: 5 samples with the same specification are cut from the same batch of inorganic artificial stone, the standard state of the surface of the sample is a polished surface, the length (L) of the sample is (200 +/-0.3) mm, the width (b) of the sample is (50 +/-0.3) mm, and the thickness (h) of the sample is (25 +/-0.3) mm. Before the test, the sample is placed at the temperature (40 +/-5) DEG C and dried to constant weight, the dried sample is placed in a dryer, and after the dried sample is cooled to the room temperature (20 +/-5) DEG C, the loading test is completed within 24 h. The loading test was conducted in a three-point bending-resistant manner, the distance (L) between the two support shafts was adjusted to be 20mm shorter than the length (L) of the test specimen, the load was increased at a loading rate of (0.25. + -. 0.05) MPa/s until the test specimen was fractured, and the load value (F) at the time of fracture was recorded. The flexural strength of each sample was calculated as follows: f. off=1.5Fl/bh2Then taking the average value ffAnd (6) averaging.
Compressive strength: 5 samples with the same specification are cut from the same batch of inorganic artificial stone, the standard state of the surfaces of the samples is a polished surface, and the side length (a) of the samples is a cube with (50 +/-5) mm. Before the test, the sample is placed at the temperature (40 +/-5) DEG C and dried to constant weight, the dried sample is placed in a dryer, and after the dried sample is cooled to the room temperature (20 +/-5) DEG C, the loading test is completed within 24 h. Continuously applying load to the sample at a constant speed of (1 +/-0.5) MPa/s until the sample is completely destroyed, and recording the load value (P) when the sample is destroyed. The compressive strength of each sample was calculated as follows: p ═ P/a2Then take the average value pAverage。
Water absorption: cutting 5 samples with the same specification from the same batch of inorganic artificial stone, wherein the standard state of the surface of the sample is a polished surface, the side length (a) of each sample is a cube of (50 +/-5) mm, removing dust, placing the samples at the temperature of (40 +/-5) DEG C before testing, drying the samples to constant weight, placing the dried samples in a dryer, cooling to the room temperature of (20 +/-5) DEG C, and completing the loading test within 24 h. After weighing, the samples were washedAdding water into the washer, flooding to the height of one fourth of the sample, and soaking for two hours; adding water to the height of one half of the sample, and soaking for three hours; then adding water to submerge to the height of three quarters of the sample until the sample is completely submerged by the water; placing in water for twenty-four hours; then, taking out, wiping and weighing, wherein the water absorption of each sample is calculated according to the following formula: w is (B-G)/G.times.100% (W is the water absorption expressed as a percentage, G is the weight of the sample after drying, and B is the weight of the sample after saturating), and the average W is takenAverage。
Coefficient of linear thermal expansion: the room temperature was controlled at (20 soil l) C.the sample was dried in an air-blown dry box of (55 soil 5) C for 24h and placed in a desiccator to cool to room temperature.
The length of the sample Lo is measured with a vernier caliper to the nearest 0.02 mm. The sample was placed in a thermal expansion instrument and the room temperature at that time was recorded. The thermodilatometer heating program was then started, heating from room temperature to 130C at a rate of 3C/min. The length of the sample was recorded to the nearest 0.01mm throughout the heating process.
The measurement temperature ranges from room temperature to 60 ℃. And (4) calculating a result:
when the filler particle size is not more than 6mm, the linear thermal expansion coefficient alpha is calculated according to the formula (unit 10)-5℃-1To the first decimal point):
L0-length of the sample at room temperature in millimeters (mm):
Δ L — the amount of increase in length of the sample between room temperature and 60C, in millimeters (mm):
Δ t-the temperature rise in degrees (. degree.C.) at 0L increase in the length of the specimen.
Table 2 examples 1-16 and comparative examples 1-6 test results for performance of the engineered stone
Referring to table 2, comparative examples 1 to 16 and comparative example 1, examples 1 to 16 each have a linear thermal expansion coefficient smaller than that of comparative example 1, showing that the inorganic artificial stone of the present application has better heat resistance and expansion resistance. The artificial stone of comparative example 1 is manufactured by adopting a sintering process, the compressive strength of the artificial stone can be enhanced, but the flexural strength is lower, and a porous structure is formed, so that the artificial stone is easy to absorb water, and the appearance is not bright enough.
Comparing example 2 with comparative example 2, the artificial stone of comparative example 2 is not vibrated in the pressing process step, the compactness of the finally obtained artificial stone is not enough, more air holes appear in the appearance, and the fracture resistance, pressure resistance and permeability resistance are lower than those of the artificial stone obtained in example 2, but the linear thermal expansion coefficient is lower and the heat resistance is better.
Compared with the examples 1-4, under the condition of consistent grading of aggregate and filler, the artificial stone obtained by the formula and the pressing process in the example 2 has better appearance, compressive strength, water absorption and linear thermal expansion coefficient; but the flexural strength of example 4 is the best. Compared with the existing artificial stone, the compressive strength and the flexural strength are improved by 20%, the water absorption is reduced by 67%, and the thermal expansion coefficient is reduced by 99%.
Comparing example 2 with example 5, the aggregate and filler of example 5 have inferior compressive strength, flexural strength and water absorption rate, probably because of more artificial stone voids, but because of lower structure compactness, the coefficient of linear thermal expansion is smaller and the heat resistance is good.
Comparing example 2 with examples 6, 7 and 8, the compression strength of the artificial stone can be improved by adding metakaolin, white silica fume and white fly ash as active additives. The strength of concrete is related to its phase composition and pore structure characteristics. Metakaolin mainly comprises Al as active ingredient2O3And Si02The main active component of the silica fume is Si02The particle size is basically less than 5 mu m, and the main active substance of the fly ash is SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2The particle size is 1-10 μm. When the artificial stone active additive is used for the artificial stone active additive, the artificial stone active additive has good volcanic ash effect, can play the volcanic ash effect in the early stage of cement hydration, and reduces Ca (OH) in hydration products2The crystal content is increased, the content of hydrated gel is increased, the Ca/Si content of the hydrated gel is reduced, and the compactness of a hydrated product is improved. Meanwhile, the metakaolin, the silica fume and the fly ash can play a good size effect in a cement system to form the dense accumulation and filling effects of solid particles, so that the pore size distribution of the artificial stone is further refined, and the bending strength and the compressive strength of the artificial stone are improved. Metakaolin contains a large amount of glassy state AlO3The volcanic ash reaction in the early stage is more obvious than that of the silicon ash and the fly ash, and the volcanic ash reaction shows better early strength promoting effect, so that the flexural strength and the compressive strength of the concrete example 2 are better. The artificial stone can obtain better compression resistance, fracture resistance, permeability resistance and durability through the compound active additive in a certain proportion, and simultaneously, the cost of the material is reduced.
Compared with the embodiment 2 and the embodiment 9, the anti-bending performance of the artificial stone can be improved by adding the styrene-butadiene emulsion and the styrene-acrylic emulsion. The butylbenzene emulsion has good water reducing and retaining effects in a cement-based material system, can obviously reduce the water absorption of capillary pores, and improves the toughness; and the butylbenzene emulsion has the function of promoting hydration in the early hydration process, so that the production efficiency can be improved. The styrene-acrylic emulsion can also improve the toughness, shrinkage and impermeability of the mortar, but the styrene-acrylic emulsion has the effect of inhibiting hydration in the early cement hydration process, and the production efficiency is low.
Comparing example 2 with examples 10-14, the addition of the fiber can further improve the folding, compression, permeation and heat resistance properties of the artificial stone. The impact of the added basalt fiber on the bending resistance, the compression resistance, the permeability resistance and the heat resistance of the artificial stone is larger than the impact of the glass fiber on the artificial stone, because the fiber and the cement serve as a whole to bear load together, when the cement bears load to generate micro cracks, the fiber traverses the cracks and transmits stress, and when the cement is brittle-broken, the cement added with the fiber can still bear larger load. Therefore, the added fiber can improve the compression resistance and the bending resistance of the cement-based artificial stone, has certain toughness and has the corresponding toughness characteristic of the organic artificial stone. But the basalt fiber can affect the appearance of the section of the artificial stone due to the darker color, and is suitable for the artificial stone of dark color series. Wherein, the compressive property of the artificial stone is improved by 2.6 percent and the fracture resistance is improved by 29.2 percent by adding the basalt fiber; the water absorption is reduced by 12.5%; the thermal expansion coefficient is improved by 8.3 percent.
Comparing example 10 with example 15, the effect of adding only glass fiber on the performance of the artificial stone is lower than the effect of adding glass fiber and styrene-butadiene emulsion on the performance of the artificial stone, which shows that the glass fiber and styrene-butadiene emulsion can synergistically increase the compressive strength and the flexural strength of the artificial stone.
Comparing example 11 with example 16, the effect of adding only basalt fiber on the performance of the artificial stone is lower than the effect of adding basalt fiber and styrene-butadiene emulsion on the performance of the artificial stone, which shows that the basalt fiber and styrene-butadiene emulsion can synergistically increase the compressive strength and the flexural strength of the artificial stone.
Comparing example 2 with comparative example 3, comparative example 3 added 0.4 part of glass fiber, compression resistance and fracture resistance were not good as example 2, and water absorption and thermal expansion coefficient were larger than example 2.
Comparing example 2 with comparative example 4, comparative example 4 added 0.4 parts of basalt fiber, compression resistance, bending resistance were not as good as example 2, and water absorption and thermal expansion coefficient were larger than example 2.
Comparing example 2 with comparative example 5, comparative example 3 adds 1.2 parts of glass fiber, the compression resistance, the bending resistance are all larger than example 2, and the water absorption is lower than example 2, but the thermal expansion coefficient is larger than example 2, and the fiber section of the appearance is more obvious, the appearance spot is sharp, which is not beneficial to decoration application, and the thermal expansion coefficient is increased because of being too dense.
Comparing example 2 with comparative example 6, comparative example 3 adds 1.2 parts of basalt fiber, the compression resistance and the folding resistance are both larger than example 2, and the water absorption is lower than example 2, but the thermal expansion coefficient is larger than example 2, and the fiber section of the appearance is more obvious, the texture color is deep, which is not good for bright indoor decoration application, and the thermal expansion coefficient is increased because of too dense.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. An inorganic artificial stone imitating natural marble texture is characterized in that: the composition is prepared from the following raw materials in parts by weight:
30-36 parts of quartz sand;
1-3 parts of quartz powder;
13-15 parts of cement;
2-4 parts of an active additive;
0.6-1.8 parts of a toughening agent;
0.3-0.6 part of a polycarboxylic acid water reducing agent;
0.2-0.4 part of pigment;
3-5 parts of water;
the pigment is one or a combination of titanium dioxide, iron black powder, iron red powder, iron yellow powder and iron brown powder.
2. An artificial stone having an artificial natural marble texture according to claim 1, wherein: the composition is prepared from the following raw materials in parts by weight:
33 parts of quartz sand;
1.5 parts of quartz powder;
52.5 parts of cement;
3 parts of active additive;
1.2 parts of a toughening agent;
0.45 part of polycarboxylic acid water reducing agent;
0.2 part of pigment;
4 parts of water;
the pigment is one or a combination of titanium dioxide, iron black powder, iron red powder, iron yellow powder and iron brown powder.
3. An artificial stone having an artificial natural marble texture according to claim 1, wherein: the particle size range of the quartz sand is 40 meshes to 120 meshes.
4. An artificial stone having an artificial natural marble texture according to claim 2, wherein: the particle size range of the quartz powder is 200 meshes to 325 meshes.
5. An artificial stone having an artificial natural marble texture according to claim 1, wherein: the active additive is one or more of metakaolin, white silica fume and white fly ash.
6. An artificial stone having an artificial natural marble texture according to claim 1, wherein: the toughening agent is styrene-butadiene emulsion or styrene-acrylic emulsion with the solid content of 40-50%.
7. An artificial stone having an artificial natural marble texture according to claim 1, wherein: the raw material also comprises 0.5-1 part by weight of glass fiber or basalt fiber or combined fiber thereof.
8. The process for preparing an inorganic artificial stone imitating natural marble patterns according to claim 1, comprising the steps of:
s1, uniformly mixing quartz sand, quartz powder, cement and an active additive to prepare a mixture A;
s2, uniformly mixing water and the water reducing agent, adding the mixture into the mixture A prepared in the S1, and uniformly stirring to prepare a mixture B;
s3, adding the cement into the mixture B prepared in the S2, and uniformly stirring to prepare a mixture C;
s4, flatly laying the stirred mixed material C in a mould;
s5, uniformly scattering the prepared pigment on the tiled material, and rolling by using a roller to combine the pigment with the mixed material C;
s6, cutting the rolled materials into a plurality of strip-shaped mixed materials with different lengths, turning the strip-shaped mixed materials laterally and randomly placing the strip-shaped mixed materials in a mold, and then carrying out vacuum vibration pressing to obtain inorganic artificial stone blank plates with various textures;
s7, performing steam curing on the pressed inorganic artificial stone blank plate for 8 hours, then performing natural curing, and performing fixed-thickness polishing after the total curing time reaches 7 days to obtain the inorganic artificial stone imitating the texture of the natural marble; maintaining and heating for 2 hours, keeping the temperature for 6 hours, and cooling for 2 hours, wherein the constant temperature is 50-60 ℃.
9. The process of claim 8, wherein the process comprises the steps of: the stirring time in the S1 is 5-6 min; the stirring time in the S2 is 2-4 min; the stirring time in the S3 is 2-3 min.
10. The process of claim 8, wherein the process comprises the steps of: the vacuum vibration pressing conditions are as follows: the vacuum-pumping time is 30-60s, the absolute pressure is 0.09-0.1 MPa, the pressure is 300 tons, the vibration frequency is 40-50Hz, and the pressing time is 2-3 min.
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