CN112645638A - Corrosion-resistant artificial stone and preparation method thereof - Google Patents
Corrosion-resistant artificial stone and preparation method thereof Download PDFInfo
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- CN112645638A CN112645638A CN202011591977.7A CN202011591977A CN112645638A CN 112645638 A CN112645638 A CN 112645638A CN 202011591977 A CN202011591977 A CN 202011591977A CN 112645638 A CN112645638 A CN 112645638A
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- artificial stone
- vinyl resin
- pug
- quartz sand
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- 239000002969 artificial stone Substances 0.000 title claims abstract description 131
- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 70
- 229920005989 resin Polymers 0.000 claims abstract description 70
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 68
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 68
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000006004 Quartz sand Substances 0.000 claims abstract description 51
- 238000003825 pressing Methods 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 35
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 47
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000049 pigment Substances 0.000 claims description 8
- -1 ketone peroxide Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000011439 engineered stone Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 60
- 239000000203 mixture Substances 0.000 description 30
- 239000004575 stone Substances 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 21
- 238000005303 weighing Methods 0.000 description 15
- 239000000919 ceramic Substances 0.000 description 7
- 238000005034 decoration Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
Abstract
The invention provides a corrosion-resistant artificial stone and a preparation method thereof, wherein the raw materials comprise the following components in percentage by weight: 4-9% of vinyl resin, 0.5-1.5% of curing agent and the balance of quartz sand; the styrene content in the vinyl resin is not more than 35 percent; the viscosity of the vinyl resin is 0.20 to 0.65 Pa.s. The invention uses the vinyl resin with specific viscosity and specific styrene content and is matched with the high-energy pressing process of the invention to prepare the artificial stone with the linear thermal expansion coefficient less than 2.5x10‑5The artificial stone has the advantages of small volume change under the condition of temperature change, good dimensional stability, excellent corrosion resistance, UA-level corrosion resistance and widened application scene of the artificial stone, and can be applied to walls and floors. Meanwhile, the artificial stone has few components, no new component is added, the preparation process is simple, and industrial large-scale production can be realized.
Description
Technical Field
The invention relates to the field of artificial stones, in particular to a usable corrosion-resistant artificial stone and a preparation method thereof.
Background
As a necessary basic building material, natural stone has the following five properties: the natural stone is easy to obtain, machine-shaping and transport, and has excellent mechanical property, durability and wide application, but the natural stone is gradually limited to be mined along with the reasons of excessive increase of mining amount, low mining utilization rate and the like, and the product of each mining area has unique color and variety, so that the difficulty in use is increased. People are always looking for alternatives.
With the gradual improvement of living standard of people, the synthetic stone is more and more popular to people as a novel building material due to beautiful color, novel pattern and elegant decorative effect, and various synthetic stones are produced.
The artificial stone is a third-generation stone following natural stones (granite, marble) and firing bricks (ceramic tiles, microlites and the like), has the advantages of greenness, environmental protection, safety, health, excellent quality, quick installation, rich colors, various styles, strong decoration and the like, and has higher hardness and better wear resistance compared with the natural stones.
Although the artificial stone has a plurality of advantages, the problem of large expansion coefficient exists, if the artificial stone is applied to the ground or the wall, the engineering quality is difficult to guarantee for a long time, and hollowing, corner raising and even cracking are easy to occur, so that in practice, the artificial stone is mainly used for cabinet table tops and the like, and a certain gap can be reserved between the table tops and the wall to avoid the problems of damage and the like caused by thermal expansion of artificial stone plates. But if lay in wall and ground, the gap of reserving is great then pleasing to the eye, is contrary to the original intention of adopting the rostone to do the decoration of ground or wall, and this has greatly restricted the application of rostone, and if can develop the coefficient of thermal expansion less, non-deformable's rostone panel has important meaning. Meanwhile, in order to ensure the durability and wide application range of the artificial stone, if the artificial stone has corrosion resistance on the basis of small deformability, the artificial stone has practical value and economic value.
Disclosure of Invention
The invention mainly solves the technical problem of providing the corrosion-resistant artificial stone and the preparation method thereof, the artificial stone has small thermal expansion coefficient, is not easy to deform, can be used for walls and floors and has strong corrosion resistance.
In order to solve the technical problems, the invention adopts a technical scheme that:
an artificial stone for wall and ground comprises the following raw materials in percentage by weight: 4-9% of vinyl resin, 0.5-1.5% of curing agent and the balance of quartz sand; the styrene content in the vinyl resin is not more than 35%.
The vinyl resin has excellent corrosion resistance, and can ensure the corrosion resistance of the artificial stone.
In one embodiment of the invention, the raw materials comprise the following components in percentage by weight: 7 percent of vinyl resin, 1.0 percent of curing agent and the balance of stone aggregate.
Further, the viscosity of the vinyl resin is 0.20-0.65 Pa.s.
In the field of artificial stones, the vinyl resin has a plurality of commodity types, and the inventor of the invention finds that when the styrene content in the used vinyl resin commodity is not more than 35% and the viscosity is within the range of 0.20-0.65 Pa.s, the prepared artificial stone has a low expansion coefficient, and when the styrene content in the used vinyl resin commodity exceeds 35% and the viscosity is high, the prepared artificial stone plate has a high thermal expansion coefficient, is easy to warp, is fragile, and is not dense enough and has insufficient strength.
In the field, vinyl resin commodities with the styrene content of less than 35 percent and the viscosity of 0.2-0.65 Pa.s, such as Xinyang 7510, Pihua chemical engineering 118, Fudakang 907-S, Changxing 2960 and the like, can be applied to the invention.
The Xinyang 7510, the Pihua chemical industry 118, the Fudakang 907-S, the Changxing 2960 and the like all refer to specific commercial models of resin, for example, the Xinyang 7510 refers to quartz stone resin with the model number of 7510 produced by Xinyang science and technology group.
Further, the vinyl resin sun 7510.
Further, the curing agent is selected from one or more of methyl ethyl ketone peroxide, cycloethyl ketone peroxide and tert-butyl 2-ethylhexanoate peroxide.
Further, the content of silica in the quartz sand is greater than or equal to 99%.
Further, the paint also comprises pigment; further, the pigment is an anticorrosive pigment.
Further, the pigment is 0-2% by weight.
Further, the artificial stone has a linear thermal expansion coefficient of less than 2.5x10-5。
Further, the artificial stone has a linear thermal expansion coefficient of less than 2.0x10-5。
The invention also provides a preparation method of the artificial stone, which is characterized in that the vibration pressurizing energy during pressing is 1.6-3.0 kw per square meter, preferably 2.0-2.5 kw per square meter; the pressure is 50-80%, preferably 60-80% of the vibration force.
Further, the pressing time is 50 seconds to 180 seconds.
Further, the preparation method of the artificial stone comprises the following steps:
(1) mixing the components to obtain artificial stone pug;
(2) distributing artificial stone mud into a mold;
(3) carrying out vacuum vibration profiling on the artificial stone pug in a mould to form a plate body;
(4) and heating and curing the plate body.
Further, the vacuum degree of the vacuum vibration pressure type is that the pressure is less than or equal to 1500 Pa.
Further, the heating and curing temperature is 50-150 ℃, and preferably 100-150 ℃.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention uses the vinyl resin with specific viscosity and specific styrene content and is matched with the high-energy pressing process of the invention to prepare the artificial stone with the linear thermal expansion coefficient less than 2.5x10-5The artificial stone has the advantages of small volume change under the condition of temperature change, good dimensional stability, excellent corrosion resistance, UA-level corrosion resistance and widened application scene of the artificial stone, and can be applied to walls and floors.
(2) The invention has less stone-making components, no new components are added, the preparation process is simple, and the industrialized mass production can be realized.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The styrene content of the Xinyang 7510, the Fudakang 907-S and the Changxing 2960 vinyl resin used in the embodiment is less than 35 percent, and the viscosity is within 0.2-0.65 Pa.s; the styrene content of the vinyl resin of the weft insertion 963, the weft insertion 961 and the Kebao 901 is more than 35 percent, and the viscosity is more than 0.65 Pa.s.
Example 1
The artificial stone of the embodiment comprises the following raw materials: stone aggregate: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.0kw per square meter, the pressure is 60 percent of the vibration force, and the pressing time is 100s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 2
The artificial stone of the embodiment comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 3.0kw per square meter, the pressure is 80% of the vibration force, and the pressing time is 180s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 3
The artificial stone of the embodiment comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 4
The artificial stone of the embodiment comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 1.6kw per square meter, the pressure is 50% of the vibration force, and the pressing time is 50s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 5
The artificial stone of the embodiment comprises the following raw materials: 1919g of quartz sand, 80g of vinyl resin (Xinyang 7510) and 1g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 6
The artificial stone of the embodiment comprises the following raw materials: 1827g of quartz sand, 170g of vinyl resin (Xinyang 7510), and 3g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, transferring the plate body into an oven for heating and curing, wherein the curing temperature is 150 ℃, and the curing time is 1h, so that a finished product of the artificial stone plate is obtained.
Example 7
The artificial stone of the embodiment comprises the following raw materials: 1817g of quartz sand, 180g of vinyl resin (Xinyang 7510) and 3g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 150 ℃, and the curing time is 1.5 hours, so that a finished product of the artificial stone plate is obtained.
Example 8
The artificial stone of the embodiment comprises the following raw materials: 1000g of quartz sand, 600g of ceramic particles, 258g of ceramic powder, 1858g of vinyl resin (Fudakang 907-S), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Example 9
The artificial stone of the embodiment comprises the following raw materials: total 1858g of quartz sand 1000g, ceramic particles 600g, and ceramic powder 258g, vinyl resin (Changxing 2960)140g, and methyl ethyl ketone peroxide 2 g.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 1
The artificial stone of the comparative example comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (upper weft 963), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 2
The artificial stone of the comparative example comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (upper weft 961), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 3
The artificial stone of the comparative example comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Kebao 901) and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 2.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 4
The artificial stone of the comparative example comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 1.5kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 5
The artificial stone of the comparative example comprises the following raw materials: 1858g of quartz sand, 140g of vinyl resin (Xinyang 7510), and 2g of methyl ethyl ketone peroxide.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 1.0kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
Comparative example 6
The artificial stone of the comparative example comprises the following raw materials: stone aggregate: total 1858g of quartz sand 1000g, ceramic pellet 600g, and ceramic powder 258g, vinyl resin (upper weft 963)140g, and methyl ethyl ketone peroxide 2 g.
(1) Weighing the raw materials according to the formula amount, pouring quartz sand into a stirring cylinder, and stirring for 10 minutes to uniformly mix the quartz sand.
(2) And (2) adding vinyl resin and methyl ethyl ketone peroxide into the stirring cylinder mixed with the stone aggregate in the step (1), and stirring for 10 minutes to uniformly mix the vinyl resin and the methyl ethyl ketone peroxide to obtain the artificial stone pug.
(3) The artificial stone pug is flatly arranged in a die frame according to the required thickness, and a demoulding layer is respectively paved on the bottom surface and the top surface of the artificial stone pug.
(4) And (3) carrying out vacuum exhaust on the pug with the well-distributed demolding layer, then sending the pug into a forming device for vacuum vibration pressing, firstly vacuumizing to be within 1500Pa, starting vibration and pressurizing, wherein the energy of the vibration and pressurizing pressure is 1.0kw per square meter, the pressure is 70% of the vibration force, and the pressing time is 150s, thus obtaining the formed plate body.
(5) And demolding the plate body, and transferring the plate body into an oven for heating and curing, wherein the curing temperature is 100 ℃, and the curing time is 2 hours, so that a finished product of the artificial stone plate is obtained.
The artificial stone plate is subjected to performance detection by adopting European Union standard EN 15285-2008:
the linear expansion coefficients (25 to 130 ℃) of the artificial stone slabs manufactured in examples 1 to 9 and comparative examples 1 to 6 were measured, and the results are shown in table 1:
TABLE 1
| Linear expansion coefficient alpha (25-130 deg.C)/10-5 | |
| Example 1 | 1.5 |
| Example 2 | 1.7 |
| Example 3 | 1.2 |
| Example 4 | 1.9 |
| Example 5 | 1.5 |
| Example 6 | 1.8 |
| Example 7 | 2.0 |
| Practice ofExample 8 | 1.3 |
| Example 9 | 1.3 |
| Comparative example 1 | 3.0 |
| Comparative example 2 | 2.7 |
| Comparative example 3 | 3.0 |
| Comparative example 4 | 2.5 |
| Comparative example 5 | 2.7 |
| Comparative example 6 | 3.2 |
According to the results in table 1, compared with the comparative example, the thermal expansion coefficients of examples 1 to 9 are lower and can be as low as 1.2, which shows that the artificial stone prepared by adopting the vinyl resin with specific styrene content and specific viscosity and combining with the specific pressing process has better dimensional stability and lower thermal expansion coefficient, and can be applied to decoration of ground and wall surfaces. The artificial stone prepared by the conventional pressing process has a high thermal expansion coefficient, and is not suitable for being used on the ground or the wall.
The strength of the artificial stone slabs manufactured in examples 1 to 9 and comparative examples 1 to 6 was measured, and the results are shown in table 2:
TABLE 2
The corrosion resistance of the artificial stone plates of the embodiments 1 to 9 was tested, and the corrosion resistance of the artificial stone plates of the embodiments 1 to 4 was all up to UA level.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The corrosion-resistant artificial stone is characterized by comprising the following raw materials in percentage by weight: 4-9% of vinyl resin, 0.5-1.5% of curing agent and the balance of quartz sand; the styrene content in the vinyl resin is not more than 35%.
2. An artificial stone according to claim 1, wherein the raw materials comprise the following components in weight percent: 7% of vinyl resin, 1.0% of curing agent and the balance of quartz sand.
3. An artificial stone according to claim 1, wherein the vinyl resin has a viscosity of 0.20 to 0.65 pa.s;
further, the vinyl resin is selected from one or more of Xinyang 7510, Tahua chemical industry 118, Fudakang 907-S and Changxing 2960, and the Xinyang 7510 is preferred.
4. An artificial stone according to claim 1, wherein the curing agent is selected from one or more of methyl ethyl ketone peroxide, cycloethyl ketone peroxide, and tert-butyl 2-ethylhexanoate peroxide.
5. An artificial stone according to claim 1, wherein the silica content of the quartz sand is 99% or more.
6. An engineered stone according to claim 1, further comprising a pigment; further, the pigment is an anticorrosive pigment; further, the pigment is 0-2% by weight.
7. An artificial stone according to any one of claims 1 to 6, having a coefficient of linear thermal expansion of less than 2.5x10-5Further, the artificial stone has a linear thermal expansion coefficient of less than 2.0x10-5。
8. A method for producing an artificial stone according to any one of claims 1 to 7, wherein the vibration pressurizing energy at the time of pressing is 1.6 to 3.0kw per square meter, preferably 2.0 to 2.5kw per square meter; the pressure is 50-80% of the vibration force, preferably 60-80%;
further, the pressing time is 50 seconds to 180 seconds.
9. A method of making an artificial stone according to claim 8, comprising the steps of:
(1) mixing the components to obtain artificial stone pug;
(2) distributing artificial stone mud into a mold;
(3) carrying out vacuum vibration profiling on the artificial stone pug in a mould to form a plate body;
(4) and heating and curing the plate body.
10. A method for producing an artificial stone according to claim 9, wherein a degree of vacuum of the vacuum vibration press is 1500Pa or less;
further, the heating and curing temperature is 50-150 ℃, and preferably 100-150 ℃.
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| JPH09104728A (en) * | 1995-10-12 | 1997-04-22 | Hitachi Chem Co Ltd | Vinyl ester resin composition and production of artificial marble |
| JP2002160956A (en) * | 2000-11-20 | 2002-06-04 | Yamaha Livingtec Corp | Artificial stone with high hardness |
| JP2005097068A (en) * | 2003-08-26 | 2005-04-14 | Matsushita Electric Works Ltd | Resin composition for artificial marble, and artificial marble obtained by heating and curing the composition |
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