CN109942227B - Quartz stone with performance enhanced by low-melting glass powder and preparation method thereof - Google Patents
Quartz stone with performance enhanced by low-melting glass powder and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a quartz stone with performance enhanced by low-melting glass powder, which comprises the following raw materials in parts by mass: 1000 parts of quartz sand 1150 parts, 450 parts of quartz powder 550 parts and 170 parts of resin 230 parts; the resin also comprises the following raw materials in percentage by taking the resin dosage as a reference: 2.5 to 10 percent of low-melting-point glass powder. The invention also provides a preparation method of the quartz stone. According to the invention, the low-melting-point glass powder is added into a formula system of the quartz stone, so that the mechanical property of the quartz stone plate can be effectively improved. The mechanical property of the quartz stone is improved by limiting the adding amount of the low-melting-point glass powder in a formula system of the quartz stone, and the low-temperature glass powder has certain permeability after melting and curing, so that the permeability of the quartz stone can be improved, and the surface pattern effect can be improved.
Description
Technical Field
The invention relates to the technical field of artificial stones, in particular to a quartz stone with performance enhanced by low-melting glass powder and a preparation method thereof.
Background
The artificial quartz stone is an artificial stone which is processed by taking quartz sand powder as a main filler and unsaturated polyester resin as an adhesive through the steps of vacuumizing, vibrating, compacting, curing and the like, has hard texture and compact structure, and has the characteristics of wear resistance, pressure resistance, high temperature resistance, corrosion resistance, seepage prevention and the like which are incomparable with other decorative materials. The artificial quartz stone is widely applied to the fields of public buildings such as hotels, restaurants, banks, hospitals, exhibitions and laboratories, and home decoration such as kitchen table tops, wash tables, kitchen and bathroom walls, dining tables, tea tables, window platforms, door covers and the like.
Although the artificial quartz stone can replace natural stone, high-grade ceramic, wood and metal decorative materials, the artificial quartz stone generally has the defects of poor impact resistance, easy breakage and the like. According to the mechanical properties of the artificial quartz stone, the artificial quartz stone is divided into A, B grades and C grades, wherein the A grade can be used for indoor decoration, and therefore, the improvement of the mechanical properties of the artificial quartz stone is very necessary. In the prior art, different fillers are usually added into the artificial quartz stone to improve the mechanical properties, such as modified calcium carbonate, but the permeability of the artificial quartz stone is changed along with the mechanical properties, so that the expression effect of the surface pattern of the artificial quartz stone is influenced.
Disclosure of Invention
The invention aims to provide a quartz stone with performance enhanced by low-melting glass powder and a preparation method thereof, and the quartz stone plate has better mechanical property.
In order to achieve the purpose, the invention adopts the following technical scheme:
the quartz stone with the performance enhanced by the low-melting-point glass powder comprises the following raw materials in parts by mass: 1000 parts of quartz sand 1150 parts, 450 parts of quartz powder 550 parts and 170 parts of resin 230 parts;
the resin also comprises the following raw materials in percentage by taking the resin dosage as a reference: 2.5 to 10 percent of low-melting-point glass powder.
Furthermore, the addition amount of the low-melting glass powder is 5-7.5% of the dosage of the resin.
Further, the type of the low melting point glass frit is one or more of D245, D250 and D255.
Furthermore, the type and the mass ratio of the low-melting glass powder are as follows: d245: d250 ═ 1: 1;
or the type and the mass ratio of the low-melting glass powder are as follows: d245: d255 ═ 1: 1;
or the type and the mass ratio of the low-melting glass powder are as follows: d250: D255 ═ 1: 1;
or the type and the mass ratio of the low-melting glass powder are as follows: d245: D250: D255: 1: 1.
Furthermore, the particle size of the low-melting-point glass powder is 1500 meshes.
Furthermore, the D245 type low-melting-point glass powder has the following properties: the melting temperature is 450 ℃, the process temperature is 600 ℃ and 650 ℃, and the linear expansion coefficient is 90 multiplied by 10-7The molten color phase is transparent;
the D250 type low-melting-point glass powder has the following properties: the melting temperature is 500 ℃, the process temperature is 650-700 ℃, and the linear expansion coefficient is 80 multiplied by 10-7The molten color phase is transparent;
the D255 type low-melting-point glass powder has the following properties: melting temperature 550 ℃ and process temperature700 ℃ and 850 ℃, and the linear expansion coefficient is 85 multiplied by 10-7The molten color was transparent.
Furthermore, the granularity of the quartz sand is 40-70 meshes; the quartz powder consists of 1250-mesh quartz powder and 325-mesh quartz powder, and the mass ratio of the 1250-mesh quartz powder to the 325-mesh quartz powder is 1: 9.
A preparation method of quartz stone comprises the following steps:
(1) uniformly mixing the raw materials according to the formula amount to obtain a mixture;
(2) distributing the fabric, and performing vibration pressing molding on the fabric by pressing equipment under a vacuum condition;
(3) and curing and forming, namely, fixing the thickness of the formed plate, polishing, cleaning and drying to obtain a finished product.
Further, in the step (1), quartz sand, quartz powder and low-melting-point glass powder are uniformly mixed, and then are uniformly mixed with resin, a curing agent and a coupling agent.
Further, in the step (2), the vacuum condition is-0.1 MPa, the vacuumizing time is 1min, and the vibration time is 35 s;
in the step (3), the cleaned plate is dried in an oven for 120min at the drying temperature of 40 ℃.
The invention has the beneficial effects that:
according to the invention, the low-melting-point glass powder is added into a formula system of the quartz stone, so that the mechanical property of the quartz stone plate can be effectively improved. The addition of the low-melting glass powder is in positive correlation with the mechanical property of the quartz stone plate, and when the addition of the low-melting glass powder is increased, the mechanical property of the quartz stone plate is enhanced. When the low-melting glass powder with different types is added into a formula system according to a specific proportion, the mechanical property of quartz stone is obviously influenced, and when the mass ratio of the low-melting glass powder is D245: when D255 is 1:1 or D250 is 1:1, the mechanical property of the plate is obviously enhanced.
The mechanical property of the quartz stone is improved by limiting the adding amount of the low-melting-point glass powder in a formula system of the quartz stone, and the low-temperature glass powder has certain permeability after melting and curing, so that the permeability of the quartz stone can be improved, and the surface pattern effect can be improved.
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying embodiments.
The quartz stone with the performance enhanced by the low-melting-point glass powder comprises the following raw materials in parts by mass: 1000 parts of quartz sand 1150 parts, 450 parts of quartz powder 550 parts and 170 parts of resin 230 parts; the resin also comprises the following raw materials in percentage by taking the resin dosage as a reference: 2.5 to 10 percent of low-melting-point glass powder. In actual production, the raw materials of the quartz stone also comprise 1 percent of curing agent and 2 percent of coupling agent by taking the amount of resin as a reference.
The mechanical property of the quartz stone plate can be effectively improved by adding the low-melting-point glass powder into a formula system of quartz stone. The addition of the low-melting glass powder is in positive correlation with the mechanical property of the quartz stone plate, and when the addition of the low-melting glass powder is increased, the mechanical property of the quartz stone plate is enhanced.
Preferably, the addition amount of the low-melting glass powder is 5-7.5% of the resin dosage. When the addition amount of the low-melting-point glass powder in the quartz stone formula system is within the range, the mechanical property of the quartz stone is obviously enhanced.
The low melting point glass powder is one or more of D245, D250 and D255. The type and the mass ratio of the low-melting glass powder are D245: d250 ═ 1: 1; or the type and the mass ratio of the low-melting glass powder are D245: d255 ═ 1: 1; or the type and the mass ratio of the low-melting glass powder are D250: D255-1: 1; or the type and the mass ratio of the low-melting glass powder are D245: D250: D255-1: 1: 1. Preferably, the type and mass ratio of the low-melting glass powder are D245: d255 ═ 1: 1; or the type and the mass ratio of the low-melting glass powder are as follows: d250: D255 ═ 1: 1. More preferably, the type and mass ratio of the low-melting glass frit is D250: D255-1: 1.
Preferably, the low melting point glass powder has a particle size of 1500 mesh. The low-melting-point glass powder with small particle size has larger specific surface area and higher activity, and can be better combined with other raw materials during curing, so that the quartz stone plate has better mechanical property.
The D245 type low-melting-point glass powder has the following properties: melting temperature 450 ℃, process temperature 600-Number 90 × 10-7The molten color phase is transparent; the D250 type low-melting-point glass powder has the following properties: the melting temperature is 500 ℃, the process temperature is 650-700 ℃, and the linear expansion coefficient is 80 multiplied by 10-7The molten color phase is transparent; the D255 type low-melting-point glass powder has the following properties: the melting temperature is 550 ℃, the process temperature is 700 ℃ and 850 ℃, and the linear expansion coefficient is 85 multiplied by 10-7The molten color was transparent.
In the invention, the low-melting glass powder of D245, D250 and D255 is purchased from the Ammi micro-nano brand of Guangzhou Songliner new material Co. The low melting glass frits of D245, D250 and D255 do not contain lead heavy metal.
Preferably, the granularity of the quartz sand is 40-70 meshes; the quartz powder consists of 1250-mesh quartz powder and 325-mesh quartz powder, and the mass ratio of the 1250-mesh quartz powder to the 325-mesh quartz powder is 1: 9. Through the proportion of injecing quartz sand and quartz powder, the quartz powder can fill up the space between the quartz sand granule for quartz stone plate structure is compacter, is favorable to strengthening the performance of panel.
A preparation method of quartz stone comprises the following steps:
(1) uniformly mixing the raw materials according to the formula amount to obtain a mixture;
(2) distributing the fabric, and performing vibration pressing molding on the fabric by pressing equipment under a vacuum condition;
(3) and curing and forming, namely, fixing the thickness of the formed plate, polishing, cleaning and drying to obtain a finished product.
The quartz stone plate can be prepared by the method, and has stronger mechanical property due to the addition of the low-melting glass powder.
In the step (1), quartz sand, quartz powder and low-melting-point glass powder are uniformly mixed, and then are uniformly mixed with resin, a curing agent and a coupling agent. In the selection of the process scheme, the low-melting-point glass powder is mixed with the resin or the low-melting-point glass powder is mixed with the powder sand, the mechanical influence on the quartz stone plate is not obvious, and in order to prevent the phenomenon that the low-melting-point glass powder can be agglomerated in the resin, the process adopts the step of uniformly mixing the low-melting-point glass powder with the powder.
In the step (2), the vacuum condition is-0.1 MPa, the vacuumizing time is 1min, and the vibration time is 35 s. When the parameters are adopted, air in the material can be fully absorbed, no air holes are formed in the finished plate, and the quality of the plate is ensured.
In the step (3), the cleaned plate is dried in an oven for 120min at a drying temperature of 40 ℃. After the quartz stone plate is subjected to thickness setting and polishing, the quartz stone plate can be cut according to the specification. And cleaning with clear water, wherein the cleaned plate has a wet surface and needs to be dried. The plate is slowly dried at the drying temperature of 40 ℃, so that the plate can be protected to the maximum extent, and volatile matters in the plate can be further removed.
The amount and type of the low melting glass frit added are analyzed by the following specific examples.
Example group A
The formula of the quartz stone raw materials in the group of the embodiment is as follows: the raw materials in parts by mass comprise: 1087 parts of 40-70 mesh quartz sand, 55.4 parts of 1250 mesh quartz powder, 448 parts of 325 mesh quartz powder, 204 parts of resin, 4 parts of coupling agent and 2 parts of curing agent; also comprises 2.5 to 10 percent of low-melting-point glass powder by taking the amount of the resin as a reference. The examples A1-A5 were set up, and the addition amount of the low melting point glass frit was designed in a gradient in the formulation of examples A1-A5, and the addition amounts of the low melting point glass frit were set to 0, 2.5%, 5%, 7.5% and 10% in percentage based on the amount of the resin, wherein when the addition amount of the low melting point glass frit was 0, a blank test was conducted, and the type of the low melting point glass frit was D245. The 2.5-10% of the low-melting glass powder by taking the resin dosage as a reference means that the amount of the low-melting glass powder in the formula is 2.5-10% of the resin mass.
The preparation method of the quartz stone comprises the following steps:
(1) uniformly mixing the raw materials according to the formula amount to obtain a mixture; uniformly mixing quartz sand, quartz powder and low-melting-point glass powder, and then uniformly mixing with resin, a curing agent and a coupling agent;
(2) distributing the fabric, and performing vibration pressing molding on the fabric by pressing equipment under a vacuum condition; the vacuum condition is-0.1 MPa, the vacuumizing time is 1min, and the vibration time is 35 s;
(3) and curing and forming, namely, fixing the thickness of the formed plate, polishing, cleaning and drying to obtain a finished product. The cleaned plate is dried in an oven for 120min at the drying temperature of 40 ℃.
The performance tests were carried out on the quartz stones of examples A1-A6, as specified in the following table.
TABLE 1
| Item | Example A1 | Example A2 | Example A3 | Example A4 | Example A5 |
| Low-melting-point glass powder | Blank space | 2.5％ | 5％ | 7.5％ | 10％ |
| Flexural strength/MPa | 53 | 56.2 | 61.2 | 62 | 67 |
| Modulus of elasticity/Gpa | 36.8 | 26.48 | 27.24 | 30.3 | 40.81 |
| Impact toughness/kj/m 2 | 3.53 | 3.33 | 4.15 | 4.15 | 4.63 |
| Ball impact/cm | 43 | 67 | 63 | 63 | 43 |
| Thickness of plate/mm | 12.4 | 13.70 | 13.46 | 12.16 | 11.3 |
From the data analysis in table 1, it is found that the mechanical properties of the plate are in positive correlation with the addition amount of the low-melting glass powder, but the addition amount of the low-melting glass powder (based on the amount of the resin) is selected to be controlled within the range of 5-7.5% in consideration of the economic and mechanical properties of the low-melting glass powder.
When the type of the low-melting-point glass frit of examples A2-A5 was replaced with D250 or D255, a positive correlation between the mechanical properties of the sheet and the amount of the low-melting-point glass frit added was still obtained.
Example group B
The formula of the quartz stone raw materials in the group of the embodiment is as follows: the raw materials in parts by mass comprise: 1087 parts of 40-70 mesh quartz sand, 55.4 parts of 1250 mesh quartz powder, 448 parts of 325 mesh quartz powder, 204 parts of resin, 4 parts of coupling agent and 2 parts of curing agent; also comprises 5 to 7.5 percent of low-melting-point glass powder by taking the amount of the resin as a reference. Examples B1-B4 were set up, and D250 and D255 type low melting point glass frits were designed in the formulations of examples B1-B4 at 5% and 7.5%, respectively, based on the mass of the resin. The formulation of example A1 was used as a blank test. The preparation method of the quartz stone of the present example group B was the same as that of the example group A.
The performance tests were performed on the quartz stones of examples B1-B4, as shown in the following tables.
TABLE 2
| Item | Example A1 | Example B1 | Example B2 | Example B3 | Example B4 |
| Low-melting glass powder | Blank space | 5％D250 | 7.5％D250 | 5％D255 | 7.5％D255 |
| Flexural strength/MPa | 53 | 57.2 | 59.6 | 57.2 | 59.4 |
| Modulus of elasticity/Gpa | 36.8 | 39.55 | 41.78 | 32.1 | 36.9 |
| Impact toughness/kj/m 2 | 3.53 | 3.51 | 3.40 | 3.2 | 3.73 |
| Ball impact/cm | 43 | 43 | 46 | 45 | 47 |
| Thickness of plate/mm | 12.40 | 11.21 | 11.93 | 12.62 | 13.14 |
From the above table 2, it is verified that the mechanical properties of the plate are in positive correlation with the addition amount of the low-melting glass frit, and preferably, the addition amount of the low-melting glass frit in the quartz stone formulation is set to 7.5% (based on the mass of the resin).
Example set C
The formula of the quartz stone raw materials in the group of the embodiment is as follows: the raw materials in parts by mass comprise: 1087 parts of 40-70 mesh quartz sand, 55.4 parts of 1250 mesh quartz powder, 448 parts of 325 mesh quartz powder, 204 parts of resin, 4 parts of coupling agent and 2 parts of curing agent; also comprises 7.5 percent of low-melting-point glass powder by taking the resin amount as a reference. The examples C1-C4 were set up, and the different types of combinations and addition ratios of the low melting glass frits were designed in the formulations of examples C1-C4, as shown in the following table. The formulation of example A1 was used as a blank test. The preparation method of the quartz stone of example group C was the same as that of example group A.
The performance tests were carried out on the quartz stones of examples C1-C4, as specified in the following table.
TABLE 3
From the data analysis in table 3, it can be found that the combination of different types of low-melting glass powders can result in better mechanical properties than the addition of a single type, and the analysis and comparison show that the quartz stone of example B2 (D245: D255 ═ 1:1) is superior, and the quartz stone is B2 > B3 > B4 > B1. However, in actual production, the prices of the low-melting glass powders of different models are different, wherein the prices of the low-melting glass powders of different models are ranked as D245 > D250 > D255, and the combination of the low-melting glass powders of the embodiment B3 is optimal by combining the cost of raw materials, so that compared with the quartz stone plate of the embodiment A1, the bending of the quartz stone plate of the embodiment B3 is improved by 29.8%, and the falling energy of the ball is improved by 39.5%.
Example set D
This example group D gives more choices for the amounts of quartz sand, quartz powder and resin, which are the raw materials for quartz stone, and the mechanical properties of the quartz stone of this example group are similar to those of example groups A, B and C. The preparation method of the quartz stone of the present example group D was the same as that of the example group A.
TABLE 5
In table 5, the quartz sand, quartz powder, resin, curing agent and coupling agent are calculated in parts by mass, and the low-melting glass powder is calculated in percentage based on the mass of the resin.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (6)
1. The quartz stone with the performance enhanced by the low-melting-point glass powder is characterized by comprising the following raw materials in parts by mass: 1000 parts of quartz sand 1150 parts, 450 parts of quartz powder 550 parts and 170 parts of resin 230 parts;
also comprises 5 to 7.5 percent of low-melting-point glass powder by taking the amount of the resin as a reference;
the particle size of the low-melting-point glass powder is 1500 meshes;
the type and the mass ratio of the low-melting glass powder are D245: d250=1: 1;
or the type and the mass ratio of the low-melting glass powder are D245: d255=1: 1;
or the type and the mass ratio of the low-melting glass powder are D250: D255=1: 1;
or the type and the mass ratio of the low-melting glass powder are D245: D250: D255=1:1: 1.
2. The quartz stone according to claim 1, wherein the D245 type low melting point glass powder has the following properties: the melting temperature is 450 ℃, the process temperature is 600 ℃ and 650 ℃, and the linear expansion coefficient is 90 multiplied by 10-7The molten color phase is transparent;
the D250 type low-melting-point glass powder has the following properties: the melting temperature is 500 ℃, the process temperature is 650-700 ℃, and the linear expansion coefficient is 80 multiplied by 10-7The molten color phase is transparent;
the D255 type low-melting-point glass powder has the following properties: the melting temperature is 550 ℃, the process temperature is 700 ℃ and 850 ℃, and the linear expansion coefficient is 85 multiplied by 10-7The molten color was transparent.
3. The quartz stone according to claim 1, wherein the quartz sand has a particle size of 40-70 mesh; the quartz powder consists of 1250-mesh quartz powder and 325-mesh quartz powder, and the mass ratio of the 1250-mesh quartz powder to the 325-mesh quartz powder is 1: 9.
4. A method for preparing quartz stone as claimed in any one of claims 1 to 3, characterized by comprising the steps of:
(1) uniformly mixing the raw materials according to the formula amount to obtain a mixture;
(2) distributing the fabric, and performing vibration pressing molding on the fabric by pressing equipment under a vacuum condition;
(3) and curing and forming, namely, fixing the thickness of the formed plate, polishing, cleaning and drying to obtain a finished product.
5. The manufacturing method according to claim 4, wherein in the step (1), quartz sand, quartz powder and low-melting glass powder are uniformly mixed, and then are uniformly mixed with the resin, the curing agent and the coupling agent.
6. The production method according to claim 4, wherein in the step (2), the vacuum condition is-0.1 MPa, the evacuation time is 1min, and the vibration time is 35 s;
in the step (3), the cleaned plate is dried in an oven for 120min at a drying temperature of 40 ℃.
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