Lightweight high-strength quartz stone plate and production method thereof

Abstract

The application belongs to the technical field of quartz stone plate, and particularly relates to a light high-strength quartz stone plate and a production method thereof. The components of the quartz stone plate include quartz sand, hollow glass microbeads, silicon modified epoxy resin, foaming agent, hardening agent and dispersing agent. The quartz stone plate has the characteristics of light weight, high strength and wear resistance. The silicon modified epoxy resin is mixed with the quartz sand for treatment, so that the resin is attached to the surface of the quartz sand particles, the weather resistance of the quartz sand is improved, the hollow glass microbeads are subjected to surface modification treatment by using the foaming agent, the structural stability of the combination of the hollow glass microbeads and the quartz sand is enhanced, and thus the quartz stone plate with stable internal structure, light weight and high strength is formed. Under the cooperation of a suitable system, the wear resistance and sound insulation performance of the material are improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of quartz stone plate, and particularly relates to a light-weight high-strength quartz stone plate and a production method thereof. BACKGROUND

[0002] The quartz stone plate is a new type of indoor decorative material, and its main components are quartz sand and silicon modified epoxy resin, which has the advantages of high strength, wear resistance, corrosion resistance and beauty. Due to its excellent performance and beautiful appearance, it has attracted more and more attention and favor. The traditional quartz stone plate is mainly made of natural quartz sand and silicon modified epoxy resin mixed in a certain proportion, but due to the different particle sizes of quartz sand, unstable foam quantity, incomplete hardening and other reasons, the product strength is unstable, the weight is large, the construction is difficult and the energy consumption is high.

[0003] To solve this problem, researchers add light-weight aggregate, filler and other ways to make the composition of light-weight quartz stone plate more uniform, the strength more superior, and at the same time effectively reduce the weight of the product and improve its construction convenience. Among them, the light-weight aggregate can be foam particles, perlite and other materials, and the filler can be soda powder, calcium carbonate and other light inorganic matter. In addition, researchers also use advanced production processes such as mold extrusion to better control the size and weight of the product, improve the consistency and quality stability of the product.

[0004] Therefore, the innovation and progress of light-weight quartz stone plate technology can effectively solve the problems of large weight and difficult construction of traditional quartz stone plate products, improve its performance and application value, and there is still room for further improvement in the future development. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a light-weight high-strength quartz stone plate and a production method thereof.

[0006] The technical content of the present application is as follows:

[0007] The present application provides a light-weight high-strength quartz stone plate, and the components of the quartz stone plate include quartz sand, hollow glass microspheres, silicon modified epoxy resin, foaming agent, hardening agent and dispersing agent.

[0008] The quartz sand accounts for 45-65%, the hollow glass microspheres account for 10-23%, the silicon modified epoxy resin accounts for 8-16%, the foaming agent accounts for 5-8%, the hardening agent accounts for 4-6%, and the dispersing agent accounts for 3-5% by mass fraction;

[0009] The particle size of the quartz sand is 70-300 mesh;

[0010] The particle size of the hollow glass microspheres is 10-50 μm, and the density is 100-200 kg / m3 ;

[0011] The preparation of the silicon modified epoxy resin is: mixing the silicon modified epoxy resin and the silicon containing modifier uniformly according to the mass ratio of (10-20):(1-2.5), adding polyamide amine for reaction, then adding dimethylformamide and antioxidant, the reaction temperature is 180-220℃, and the reaction is carried out until completion (2-3h), thus the silicon modified epoxy resin is obtained, which has excellent weather resistance and adhesion;

[0012] The silicon containing modifier comprises one or more of epoxy silane, methyl silicone oil and polydimethylsiloxane;

[0013] The antioxidant comprises one or more of BHT, BHA and TBHQ;

[0014] The components of the foaming agent comprise surfactant and foam stabilizer, and the mass ratio of the surfactant and the foam stabilizer is (5-10):(1-2);

[0015] The surfactant comprises a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycine, and the mass ratio of the three is (5-8):(3-6):(4-9);

[0016] The foam stabilizer comprises silicone polyether emulsion and thickening agent-OE, and the mass ratio of the two is (3-5):(1-2);

[0017] The hardening agent comprises one or more of amide hardening agent, amine hardening agent and acid hardening agent, and the hardening agent has appropriate hardening speed and good hardening effect;

[0018] The amide hardening agent comprises one or more of diisocyanate urea formaldehyde and melamine urea formaldehyde;

[0019] The amine hardening agent comprises one or more of polyurethane, ethylenediamine, triethylenediamine and tetraethylenediamine;

[0020] The acid hardening agent comprises one or more of stearic acid, oleic acid and phthalic acid;

[0021] The dispersant comprises one or more of zirconium oxide, zinc nitride and zinc borate.

[0022] The application further provides a production method of the light high-strength quartz stone plate.

[0023] 1) mixing quartz sand with the silicon modified epoxy resin and the dispersant to obtain a quartz sand-resin mixture;

[0024] The stirring speed of the mixing is 50-80r / min;

[0025] 2) mixing the hollow glass microspheres with the foaming agent, and performing ultrasonic oscillation treatment to obtain surface-modified hollow glass microspheres;

[0026] The ultrasonic oscillation is at 70-90 Hz;

[0027] 3) adding the surface-modified hollow glass microspheres into the quartz sand-resin mixture, fully stirring to be uniform, finally adding a hardening agent, fully stirring again to be uniform, injecting the obtained mixture into a mold and uniformly distributing, pressing under vacuum to obtain a blank plate, heating (85-110 DEG C) to cure, thereby obtaining a quartz stone plate;

[0028] The stirring speed is 80-100 r / min;

[0029] The vacuum is at 0.8-1 MPa, and the pressing frequency varies as follows: 25 Hz for 5 s, 30 Hz for 5 s, 35 Hz for 10 s, 45 Hz for 20 s, 40 Hz for 5 s, and 35 Hz for 5 s.

[0030] The beneficial effects of the present application are as follows:

[0031] The light-weight high-strength quartz stone plate of the present application has the characteristics of light weight, high strength and wear resistance, and is composed of quartz sand, hollow glass microspheres, silicon-modified epoxy resin, foaming agent, hardening agent and dispersing agent. Through the production method of the present application, first, silicon ions are introduced into the epoxy resin to improve the affinity between the molecular polarity of the epoxy resin and the surface of the inorganic quartz sand, so that the bonding force between the epoxy resin molecules and the quartz sand surface is enhanced, and the weather resistance of the quartz sand is improved. Meanwhile, the low-density characteristics of the hollow glass microspheres are utilized, and the foaming agent is used for surface modification treatment, to enhance the structural stability of the combination of the hollow glass microspheres and the modified epoxy resin, thereby forming a quartz stone plate with stable internal structure, light weight and high strength. Under suitable system matching, the wear resistance and sound insulation performance of the material are improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Appearance of the quartz stone plate prepared in Example 1;

[0033] Figure 2 Appearance of the quartz stone plate prepared in Comparative Example 3. DETAILED DESCRIPTION

[0034] The present application will be further described in detail through specific implementation examples and the accompanying drawings. It should be understood that these examples are only used to illustrate the present application and are not used to limit the protection scope of the present application. After reading the present application, those skilled in the art can make various equivalent modifications to the present application, which fall within the scope defined by the appended claims.

[0035] All raw materials and reagents of the present application are conventional market raw materials and reagents unless otherwise specified.

[0036] Example 1

[0037] A production method of lightweight high-strength quartz stone plate

[0038] 1) 50% of quartz sand with particle size of 100-300 mesh and 16% of silicon modified epoxy resin, 4% of zinc nitride are mixed at a stirring speed of 70 r / min to obtain a quartz sand-resin mixture;

[0039] The preparation of the silicon modified epoxy resin is as follows: epoxy resin and methyl silicone oil are mixed uniformly at a mass ratio of 15:2, 15wt% of polyamide amine is added for reaction, then 10wt% of dimethylformamide and 3wt% of antioxidant BHA are added, the reaction temperature is 200℃, and the reaction is carried out until completion (2.5h), thereby obtaining the silicon modified epoxy resin;

[0040] The amount of polyamide amine, dimethylformamide and antioxidant is calculated based on the total weight of epoxy resin and silicon-containing modifier;

[0041] 2) 18% of hollow glass microbeads and 7% of foaming agent are mixed and subjected to 80Hz ultrasonic oscillation treatment to obtain surface-modified hollow glass microbeads;

[0042] The components of the foaming agent include a surfactant and a foam stabilizer, and the mass ratio is 9:2;

[0043] The surfactant includes a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycine, and the mass ratio is 7:5:6;

[0044] The foam stabilizer includes a silicone polyether emulsion and a thickening agent-OE, and the mass ratio is 3:2;

[0045] 3) The surface-modified hollow glass microbeads are added to the quartz sand-resin mixture, and are fully stirred and uniformly mixed, then 5% of hardener urea diisocyanate is added, and the mixture is again fully stirred and uniformly mixed, the obtained mixture is injected into a mold and uniformly distributed, and is pressed under vacuum to obtain a blank plate, and is heated to 100℃ for curing, thereby obtaining a quartz stone plate;

[0046] The stirring speed is 90 r / min;

[0047] The vacuum condition is 1 MPa, and the pressing frequency varies as follows: 25 Hz for 5s, 30 Hz for 5s, 35 Hz for 10s, 45 Hz for 20s, 40 Hz for 5s, and 35 Hz for 5s;

[0048] The obtained quartz stone plate is as followsFigure 1 As shown, the particles are uniformly distributed.

[0049] Example 2

[0050] A production method of lightweight high-strength quartz stone plate

[0051] 1) 65% of quartz sand with particle size of 100-300 mesh and 8% of silicon modified epoxy resin, 3% of dispersant zinc borate are mixed, the stirring speed is 80 r / min, and a quartz sand-resin mixture is obtained;

[0052] The preparation of the silicon modified epoxy resin is as follows: the epoxy resin and the polydimethylsiloxane are uniformly mixed in a mass ratio of 20:2.5, 22wt% of polyamide amine is added for reaction, then 13wt% of dimethylformamide and 3wt% of antioxidant TBHQ are added, the reaction temperature is 220℃, and the reaction is carried out until completion (3h), and the silicon modified epoxy resin is obtained;

[0053] 2) 10% of hollow glass microbeads are mixed with 8% of foaming agent, and are treated by 90Hz ultrasonic oscillation to obtain surface modified hollow glass microbeads;

[0054] The components of the foaming agent include a surfactant and a foam stabilizer, and the mass ratio is 9:2;

[0055] The surfactant includes a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycine, and the mass ratio is 8:6:9;

[0056] The foam stabilizer includes a silicone polyether emulsion and a thickening agent-OE, and the mass ratio is 5:2;

[0057] 3) The surface modified hollow glass microbeads are added into the quartz sand-resin mixture, and are fully stirred and uniformly mixed, 6% of hardening agent polyurethane is finally added, and the mixture is again fully stirred and uniformly mixed, the obtained mixture is injected into a mold and uniformly distributed, is pressed under vacuum, a blank plate is obtained, and is heated to 110℃ for curing, and a quartz stone plate is obtained;

[0058] The stirring speed is 100 r / min;

[0059] The vacuum condition is 1MPa, and the pressing frequency changes as follows: 25Hz for 5s, 30Hz for 5s, 35Hz for 10s, 45Hz for 20s, 40Hz for 5s, and 35Hz for 5s.

[0060] Example 3

[0061] A production method of lightweight high-strength quartz stone plate

[0062] 1) 45% quartz sand with particle size of 100-300 mesh and 18% silicon modified epoxy resin, 5% dispersant zirconium oxide were mixed at a stirring speed of 50 r / min to obtain a quartz sand-resin mixture;

[0063] The silicon modified epoxy resin was prepared by mixing epoxy resin and epoxy silane at a mass ratio of 10:1, adding 20 wt% polyamide amine for reaction, then adding 12 wt% dimethylformamide and 3 wt% antioxidant BHT, and reacting at a temperature of 180°C until completion (2 h).

[0064] 2) 23% hollow glass microbeads were mixed with 5% foaming agent, and subjected to 70 Hz ultrasonic oscillation treatment to obtain surface-modified hollow glass microbeads;

[0065] The foaming agent comprises a surfactant and a foam stabilizer, and the mass ratio of the two is 7:1.

[0066] The surfactant comprises a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycine, and the mass ratio of the three is 5:3:4.

[0067] The foam stabilizer comprises a silicone polyether emulsion and a thickening agent-OE, and the mass ratio of the two is 3:1.

[0068] 3) The surface-modified hollow glass microbeads were added to the quartz sand-resin mixture, and fully stirred to be uniform. Then, 4% hardener (stearic acid and oleic acid at a mass ratio of 1:1) was added, and the mixture was stirred again to be uniform. The stirring speed was 90 r / min. The obtained mixture was injected into a mold and uniformly distributed, and was pressed under vacuum to obtain a blank plate. The blank plate was heated to 90°C for curing to obtain a quartz stone plate.

[0069] The vacuum condition was 0.8 MPa, and the pressing frequency varied as follows: 25 Hz for 5 s, 30 Hz for 5 s, 35 Hz for 10 s, 45 Hz for 20 s, 40 Hz for 5 s, and 35 Hz for 5 s.

[0070] Example 4

[0071] A production method of a lightweight high-strength quartz stone plate

[0072] 1) 60% quartz sand with particle size of 100-300 mesh, 10% silicon modified epoxy resin and 4% dispersant zinc borate were mixed at a stirring speed of 60 r / min to obtain a quartz sand-resin mixture.

[0073] The preparation of the silicon modified epoxy resin is as follows: mixing the epoxy resin and the silicon containing modifier (epoxy silane, methyl silicone oil, polydimethylsiloxane) uniformly in a mass ratio of 16:2.5, adding 20wt% polyamide amine for reaction, then adding 12wt% dimethylformamide and 2wt% antioxidant BHT, the reaction temperature is 200℃, and the reaction is carried out until completion (2.7h), and the silicon modified epoxy resin is obtained;

[0074] 2) mixing 13% hollow glass microbeads with 8% foaming agent, and carrying out 85Hz ultrasonic oscillation treatment to obtain surface modified hollow glass microbeads;

[0075] The components of the foaming agent include a surfactant and a foam stabilizer, and the mass ratio is 6:1;

[0076] The surfactant includes a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycine, and the mass ratio is 6:4:5;

[0077] The foam stabilizer includes a silicone polyether emulsion and a thickening agent-OE, and the mass ratio is 4:2;

[0078] 3) adding the surface modified hollow glass microbeads into the quartz sand-resin mixture, fully stirring to be uniform, finally adding 5% hardener ethylenediamine, fully stirring again to be uniform, pouring the obtained mixture into a mold and uniformly distributing, pressing under vacuum to obtain a blank, heating to 85℃ for curing, and obtaining the quartz stone plate;

[0079] The stirring speed is 90r / min;

[0080] The vacuum condition is 0.8MPa, and the pressing frequency varies as follows: 25Hz for 5s, 30Hz for 5s, 35Hz for 10s, 45Hz for 20s, 40Hz for 5s, and 35Hz for 5s.

[0081] Comparative Example 1

[0082] In Comparative Example 1, the epoxy resin is used to replace the silicon modified epoxy resin, and other conditions are unchanged.

[0083] Comparative Example 2

[0084] In Comparative Example 2, the hollow glass microbeads are not surface treated by the foaming agent, that is, the content of the hollow glass microbeads is 25%, and other conditions are unchanged.

[0085] Comparative Example 3

[0086] In Comparative Example 3, the hollow glass microbeads are not added, and the filler is all quartz sand, and the obtained quartz stone plate is as shown in Figure 2 without other particles.

[0087] The quartz stone plate prepared above is subjected to relevant performance detection, and the detection results are as follows according to the standards GB / T35157-2017 and JG / T 463-2014:

[0088] Table 1: Determination of density and water absorption of quartz stone plate

[0089]

[0090]

[0091] As can be seen from Table 1, the quartz stone plate prepared by the present application has excellent physical properties and mechanical properties, and also has the characteristics of chemical resistance and high temperature resistance, realizes the effect of light weight and high strength, compared with Comparative Example 1, Comparative Example 2 and Comparative Example 3, the use of hollow glass microbeads to replace part of the quartz sand can obviously reduce the density of the quartz stone plate and realize the light weight performance; the use of silicon modified epoxy resin and foaming agent will have a corresponding influence on the formation of high performance quartz stone plate, it can be seen that the use of silicon modified epoxy resin and quartz sand mixed treatment makes the resin adhere to the surface of the quartz sand particles, at the same time improves the weather resistance of the quartz sand, and by using the low density characteristics of the hollow glass microbeads, the surface of the hollow glass microbeads is modified by the foaming agent, the structural stability of the combination of the hollow glass microbeads and the silicon modified epoxy resin is enhanced, so as to form a quartz stone plate with stable internal structure, light weight and high strength, under the cooperation of the appropriate system, the wear resistance and sound insulation performance of the material are improved to a certain extent.

Claims

1. A method for producing a lightweight high-strength quartz stone slab, characterized by, It comprises the following steps: 1) mixing quartz sand with silicon modified epoxy resin and dispersant to obtain quartz sand-resin mixture; The stirring speed of the mixing is 50-80 r / min; The preparation of the silicon modified epoxy resin is as follows: mixing epoxy resin and silicon containing modifier in a mass ratio of (10-20):(1-2.5), adding polyamide for reaction, then adding dimethylformamide and antioxidant, the reaction temperature is 180-220℃, and the reaction is completed to obtain the silicon modified epoxy resin; The silicon containing modifier comprises one or more of epoxy silane, methyl silicone oil and polydimethylsiloxane; The antioxidant comprises one or more of BHT, BHA and TBHQ; 2) mixing hollow glass microbeads with foaming agent and performing ultrasonic oscillation treatment to obtain surface modified hollow glass microbeads; The components of the foaming agent comprise surfactant and foam stabilizer, and the mass ratio is (5-10):(1-2); The surfactant comprises a complex of sodium dodecyl sulfate, octyl sulfobetaine and sodium hexadecanoyl glycinate, and the mass ratio is (5-8):(3-6):(4-9); The foam stabilizer comprises silicon resin polyether emulsion and thickening agent-OE, and the mass ratio is (3-5):(1-2); The ultrasonic oscillation condition is 70-90 Hz; 3) adding the surface modified hollow glass microbeads into the quartz sand-resin mixture, fully stirring and uniformly, then adding hardener, fully stirring and uniformly again, injecting the obtained mixture into a mold and uniformly distributing, pressing under vacuum to obtain a blank plate, heating and curing to obtain quartz stone plate; The stirring speed is 80-100 r / min.

2. The method of producing a lightweight high-strength quartz stone slab according to claim 1, characterized by, The particle size of the quartz sand is 70-300 mesh.

3. The method of producing a lightweight high-strength quartz stone slab according to claim 1, characterized by, The hollow glass microbeads have a particle size of 10 to 50 μm and a density of 100 to 200 kg / m 3 .

4. The method of producing a lightweight high-strength quartz stone slab according to claim 1, characterized by, The hardener comprises one or more of amide hardener, amine hardener and acid hardener; The amide hardener comprises melamine urea-formaldehyde; The amine hardener comprises one or more of polyurethane and ethylenediamine; The acid hardener comprises one or more of stearic acid, oleic acid and phthalic acid.

5. The method of producing a lightweight high-strength quartz stone slab according to claim 1, characterized by, The dispersant comprises one or more of zirconium oxide, zinc nitride and zinc borate.

6. The method of producing a lightweight high-strength quartz stone slab according to claim 1, characterized by, In step 3), the vacuum condition is 0.8-1 MPa, and the pressing frequency varies as follows: 25 Hz for 5 s, 30 Hz for 5 s, 35 Hz for 10 s, 45 Hz for 20 s, 40 Hz for 5 s and 35 Hz for 5 s.

7. The lightweight high-strength quartz stone slab prepared by the method of any one of claims 1-6, characterized in that, The components of the quartz stone plate comprise quartz sand, hollow glass microbeads, silicon modified epoxy resin, foaming agent, hardener and dispersant; According to mass fraction, the quartz sand accounts for 45-65%, the hollow glass microbeads account for 10-23%, the silicon modified epoxy resin accounts for 8-16%, the foaming agent accounts for 5-8%, the hardener accounts for 4-6%, and the dispersant accounts for 3-5%.

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