A lightweight finishing material and a method for producing the same

Abstract

The application provides a light facing material and a preparation method thereof, and the light facing material is prepared by stirring, demolding and curing of water, hollow sphere colloidal silica, thickening agent, glue powder, Portland cement, heavy calcium, vitrified microbead, water reducing agent, lithium carbonate, anti-cracking fiber and polystyrene particles in certain weight parts. The compressive strength of the light facing material prepared by the application is greater than 30 MPa, and the density is less than 600 kg / m 3 after curing for 48 hours after pouring into a mold. The light facing material can be used to produce concrete plate materials with light weight, high strength, heat preservation and sound insulation through a mold with corresponding size, and is widely applied to surface decoration of inner wall and ground.

Description

Technical Field

[0001] This invention relates to a building decoration material, specifically a lightweight decorative material and its preparation method. Background Technology

[0002] Currently, in decoration and renovation projects, construction workers use a large amount of stone, tiles, wood flooring, steel, glass, plastic, and ordinary concrete.

[0003] However, the following problems exist when using the above products: stone, ceramic tiles, and ordinary concrete have excessive density and weight, which consumes too much manpower during installation and also wastes resources and pollutes the environment; wooden boards shrink and expand when wet and dry, which can easily cause warping and bulging; steel boards are easily corroded and require a lot of anti-corrosion measures; glass boards have low strength and are fragile; plastic boards are prone to static electricity, are not fire-resistant, and have poor safety. Summary of the Invention

[0004] To address the problems of excessive weight, low strength, resource waste, variability, poor durability, and poor fire resistance of the aforementioned materials, this invention provides a lightweight imitation concrete finishing material.

[0005] The technical solution adopted in this invention is as follows:

[0006] A lightweight finishing material, comprising the following components in parts by weight:

[0007]

[0008] Preferably, the hollow sphere colloidal silica is prepared by reacting hollow sphere polymer U-Creation-E with polymethyltriethoxysilane and nano silica sol. The preparation method is as follows: 1-1.5 parts by weight of methyltriethoxysilane and 26.5-31 parts by weight of nano silica sol are added sequentially to 68-72 parts by weight of hollow sphere polymer at a speed of 5000 rpm. The mixture is then refluxed and stirred at 80-90°C for 60-90 minutes, cooled, stirred to room temperature, and left to stand for 24 hours to obtain the hollow sphere colloidal silica product.

[0009] Preferably, the hollow sphere colloidal silica solid content is at least 30%, and the pH value ranges from 9 to 10.5.

[0010] Preferably, the hollow spherical colloidal silica is a semi-transparent, colorless fluid with a specific gravity of less than 1.

[0011] Preferably, the thickener is hydroxypropyl methylcellulose with a viscosity of 300,000.

[0012] Preferably, the adhesive powder is a redispersible latex powder with a glass transition temperature below -12°C.

[0013] Preferably, the heavy calcium has a particle size range of 150-200 mesh.

[0014] Preferably, the vitrified microbead has a particle size of 30-50 mesh, an expansion ratio of 20, and a white appearance in a near-spherical shape.

[0015] Preferably, the water-reducing agent is a polycarboxylic acid type water-reducing agent with a water-reducing rate of not less than 20%.

[0016] Preferably, the anti-cracking fiber is a mineral fiber or a high molecular fiber.

[0017] Preferably, the polystyrene particles are in a particulate form.

[0018] The present application also provides a preparation method of the lightweight finishing material, comprising the following steps:

[0019] (1) sequentially adding 17-26 parts by weight of water, 13-15 parts of hollow sphere colloidal silica, 0.3-0.5 parts of thickening agent, 3-5 parts of glue powder, 29-35 parts of Portland cement, 9-16 parts of heavy calcium, 12-16 parts of vitrified microbead, 0.2-0.4 parts of water-reducing agent, 0.1-0.2 parts of lithium carbonate, and 0.6-1 parts of anti-cracking fiber into a reaction kettle, and stirring at a speed of 2000 rpm for 10 minutes until a uniform state is achieved, and then discharging the mixture into a mold;

[0020] (2) demolding the product of step (1) after 12 hours, and curing the product under standard environment for 28 days to obtain a lightweight finishing material finished product.

[0021] Preferably, the lightweight finishing material finished product has a compressive strength of greater than 30 MPa and a density of less than 600 kg / m 3 .

[0022] The present application also provides an application of the lightweight finishing material in a concrete slab.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] (1) The present application discloses a lightweight finishing material, and the raw materials thereof include water, hollow sphere colloidal silica, thickening agent, glue powder, Portland cement, heavy calcium, vitrified microbead, water-reducing agent, lithium carbonate, anti-cracking fiber, and polystyrene particles. The hollow sphere colloidal silica can form a 0.38-micron hollow sphere structure under high-speed dispersion, which plays an important role in the stability of the bubbles. The addition of the 0.38-micron hollow sphere structure makes the lightweight finishing material system have a lower density, and the density is less than 600 kg / m 3 .

[0025] (2) The hollow ball polymer in the hollow ball colloidal silica of the present application can be well attached to silica after modification, and the silica film can wrap and bond the hollow balls together after film formation, thereby improving the compressive strength of the material. The compressive strength of the lightweight decorative material after curing for 48 hours in a mold is greater than 30 MPa. In addition, due to the presence of bubbles, the finished decorative material has good heat preservation and sound insulation effect.

[0026] (3) The lightweight decorative material provided by the present application can be used to make concrete plates with lightweight, high strength, heat preservation and sound insulation through a mold of corresponding size, and can be widely applied to the surface decoration of inner wall and floor. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described in detail below in combination with embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. If no other specification is given, the raw materials used are commercially available.

[0028] Embodiment 1

[0029] Preparation of hollow ball silica: 72 parts by weight of hollow ball polymer Optim-E (Dow Chemical) was added to a reaction kettle, and 1.5 parts by weight of polymethyl triethoxysilane (Jinan Xinglongda Chemical, degree of polymerization 2-4) and 26.5 parts by weight of nano-silica sol (Zhejiang Yuda Chemical, LS-30) were added in turn at a speed of 5000 rpm. The mixture was refluxed and stirred at a temperature of 80-90℃ for 60-90 minutes, then condensed and cooled. After stirring to room temperature and standing for 24 hours, the prepared hollow ball colloidal silica product was stored for standby use. The solid content of the product was 30.5%, and the pH value was 9.3.

[0030] Table 1 Raw material formula

[0031]

[0032]

[0033] Embodiment 1-1:

[0034] (1) Water, hollow sphere colloidal silica prepared above, thickening agent (30 million hydroxypropyl methyl cellulose ether, Qingdao Xirui Ste Chemical), glue powder (Shanxi Sanwei SWF-09), Portland cement (Hailuo 425), heavy calcium (Qingsheng Calcium Industry 200 mesh), vitrified microbead (Hongke thermal insulation materials), water reducing agent (Suzhou Fu Ke 1029), lithium carbonate (Shengkun Chemical), anti-cracking fiber (Xukunkun Chemical), polystyrene particles (Hongke thermal insulation materials) were added into the reaction kettle in turn, stirred at a speed of 2000 rpm for 10 minutes to a uniform state, and then discharged into the corresponding size mold.

[0035] (2) The product of step (1) was demolded after 12 hours and cured in a standard environment for 28 days to obtain the finished lightweight finishing material.

[0036] Comparative Example 1-2:

[0037] (1) To ensure the same water-cement ratio as in the formulation of Example 1-1, the solid parts of hollow sphere silica were replaced with an equal proportion of water and heavy calcium. Water, thickening agent (30 million hydroxypropyl methyl cellulose ether, Qingdao Xirui Ste Chemical), glue powder (Shanxi Sanwei SWF-09), ordinary Portland cement (Hailuo 425), heavy calcium (Qingsheng Calcium Industry 200 mesh), vitrified microbead (Hongke thermal insulation materials), water reducing agent (Suzhou Fu Ke 1029), lithium carbonate (Shengkun Chemical), anti-cracking fiber (Xukunkun Chemical), polystyrene particles (Hongke thermal insulation materials) were added into the reaction kettle in turn, stirred at a speed of 2000 rpm for 10 minutes to a uniform state, and then discharged into the corresponding size mold.

[0038] (2) The product of step (1) was demolded after 12 hours and cured in a standard environment for 28 days to obtain the finished lightweight finishing material.

[0039] Example 2

[0040] Hollow sphere colloidal silica preparation: 68 parts by weight of hollow sphere polymer Optim-E (Dow Chemical) was added into the reaction kettle, 1 part by weight of polymethyl triethoxysilane (Jinan Xinglongda Chemical, degree of polymerization 2-4) and 31 parts by weight of nano-silica sol (Shandong Junhao Building Materials, JN-40) were added in turn at a speed of 5000 rpm, and heated and stirred at a reflux temperature of 80-90°C for 60-90 minutes. After condensation cooling, stirring to room temperature and storage for 24 hours, the prepared hollow sphere colloidal silica product was obtained, with a solid content of 34.0% and a pH value of 10.2.

[0041] Table 2 Raw material formulation

[0042]

[0043] Example 2-1:

[0044] (1) Water, hollow sphere colloidal silica prepared above, thickening agent 300 million hydroxypropyl methyl cellulose ether (Qingdao Xirui Ste Chemical), glue powder (Hui Cheng Zhongtian thermal insulation material 901), ordinary Portland cement (Hailuo 525), heavy calcium (Huatian calcium industry 200 mesh), vitrified microbead (Hongke thermal insulation material), water reducing agent (Suzhou Fu Ke 1029), lithium carbonate (Shengkun Chemical), anti-cracking fiber (Xukunkun Chemical), polystyrene particles (Hongke thermal insulation material) were added into the reaction kettle in turn, and stirred at a speed of 2000 rpm for 10 minutes to a uniform state, and then discharged into the corresponding size mold.

[0045] (2) The product of step (1) was demolded after 12 hours, and cured for 28 days under standard environment to obtain the finished product of lightweight facing material.

[0046] Comparative Example 2-2:

[0047] (1) To ensure the same water-cement ratio as in the formulation of Example 2-1, the solid parts of hollow sphere silica were replaced with an equal proportion of water and heavy calcium. Water, thickening agent 300 million hydroxypropyl methyl cellulose ether (Qingdao Xirui Ste Chemical), glue powder (Hui Cheng Zhongtian thermal insulation material 901), ordinary Portland cement (Hailuo 525), heavy calcium (Huatian calcium industry 200 mesh), vitrified microbead (Hongke thermal insulation material), water reducing agent (Suzhou Fu Ke 1029), lithium carbonate (Shengkun Chemical), anti-cracking fiber (Xukunkun Chemical), polystyrene particles (Hongke thermal insulation material) were added into the reaction kettle in turn, and stirred at a speed of 2000 rpm for 10 minutes to a uniform state, and then discharged into the corresponding size mold.

[0048] (2) The product of step (1) was demolded after 12 hours, and cured for 28 days under standard environment to obtain the finished product of lightweight facing material.

[0049] Table 3 Performance results of lightweight facing material prepared in Examples 1 and 2

[0050]

[0051] From the above Examples 1 and 2, it can be seen that:

[0052] (1) The hollow sphere colloidal silica in the present application can be well attached to the hollow sphere polymerization Youchuang-E after modification, and the silica film can wrap and bond the hollow spheres together, thereby improving the compressive strength of the material.

[0053] (2) The hollow sphere colloidal silica in the present application can form a hollow sphere structure of 0.38 microns, which plays an important role in the stability of the bubbles, thus making the system have a lower density.

[0054] (3) The light-weight imitation concrete material has excellent performances of light weight, high strength, heat preservation and fire resistance, and is an excellent material for interior wall decoration.

[0055] The above technical solution only embodies the preferred technical solution of the present application, and some changes made by the skilled in the art to some parts of the present application embody the principle of the present application and belong to the protection scope of the present application.

Claims

1. A lightweight finishing material, characterized by consists of the following components by weight parts: The hollow sphere colloidal silica is prepared by the reaction of hollow sphere polymer and polymethyl triethoxysilane, nano-silica sol, and the preparation method is as follows: 1-1.5 weight parts of polymethyl triethoxysilane and 26.5-31 weight parts of nano-silica sol are added into 68-72 weight parts of hollow sphere polymer under the speed of 5000 rpm, and then the mixture is heated and stirred under reflux at 80-90℃ for 60-90 minutes, and then the mixture is condensed and cooled, and then the mixture is stirred to room temperature and placed for 24 hours to obtain the finished hollow sphere colloidal silica.

2. Lightweight finishing material according to claim 1, characterized in that The solid content of the hollow sphere colloidal silica is at least 30%, and the pH value is in the range of 9-10.

5.

3. The lightweight finish material of claim 1, wherein, The hollow sphere colloidal silica is a translucent colorless fluid with a specific gravity less than 1.

4. The lightweight finish material of claim 1, wherein, The thickening agent is 300,000 viscosity hydroxypropyl methyl cellulose; and the glue powder is a redispersible latex powder with a glass transition temperature lower than -12℃.

5. The lightweight finish material of claim 1, wherein, The particle size of the heavy calcium carbonate is in the range of 150-200 mesh; the particle size of the vitrified microbead is in the range of 30-50 mesh, the expansion ratio is 20, and the appearance is white and nearly spherical.

6. The lightweight finish material of claim 1, wherein, The water-reducing agent is a polycarboxylic acid type water-reducing agent with a water-reducing rate not less than 20%; the anti-cracking fiber is a mineral fiber or a high polymer fiber; and the polystyrene particle is a micro-particle.

7. A method of manufacturing a lightweight finishing material according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: (1) 17-26 weight parts of water, 13-15 weight parts of hollow sphere colloidal silica, 0.3-0.5 weight parts of thickening agent, 3-5 weight parts of glue powder, 29-35 weight parts of Portland cement, 9-16 weight parts of heavy calcium carbonate, 12-16 weight parts of vitrified microbead, 0.2-0.4 weight parts of water-reducing agent, 0.1-0.2 weight parts of lithium carbonate, 0.6-1 weight parts of anti-cracking fiber, and 5-8 weight parts of polystyrene particle are sequentially added into a reaction kettle, and then the mixture is stirred at a speed of 2000 rpm for 10 minutes to a uniform state, and then the mixture is discharged into a mold; (2) the product of step (1) is demolded after 12 hours, and then the product is cured under standard environment for 28 days to obtain the finished lightweight decorative material.

8. The method of claim 7, wherein the lightweight finish material is prepared by mixing the lightweight filler, the binder, and the surfactant. The compressive strength of the light finish material finished product after curing for 48 hours after pouring into a mold is greater than 30 MPa, and the density is less than 600 kg / m 3 .

9. Use of the lightweight decorative material according to claim 1 in a concrete slab.

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