Lightweight sound insulation rock wool board and preparation method thereof

Abstract

The invention relates to the technical field of rock wool thermal insulation materials, and provides a light sound insulation rock wool board and a preparation method thereof.The light sound insulation rock wool board is prepared from, by weight, 50-70 parts of basalt, 20-30 parts of slag, 10-15 parts of dolomite, 8-14 parts of fly ash, 16-20 parts of modified hollow glass beads and 15-20 parts of binder; the modified hollow glass beads are obtained by modifying hollow glass beads with a modifier; the modifying agent comprises isopropyl tri (dodecyl benzene sulfonyl) titanate. According to the technical scheme, the problem that the sound insulation performance of the rock wool board is poor in the related technology is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rock wool thermal insulation materials, and in particular to a lightweight sound-insulating rock wool board and a preparation method thereof. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of people's living standards, the requirements for the comfort of buildings are also constantly increasing. Under different climatic conditions, buildings need to effectively maintain the stability of indoor temperature to reduce energy consumption for heating and cooling. In residential buildings, the rock wool boards used for walls, roofs and floors, in addition to maintaining the stability of indoor temperature, also need to be able to effectively reduce external noise interference and provide residents with a quiet and comfortable living environment. However, some lightweight rock wool boards on the market currently have certain advantages in thermal insulation, but they have the problem of poor mechanical properties. This makes it possible for lightweight rock wool boards to be unable to withstand certain external forces in practical applications, and they are prone to deformation, cracking, etc., which affects their thermal insulation and sound insulation effects, and even poses a hidden danger to the overall structural safety of the building. Therefore, it is necessary to develop a rock wool board with good mechanical properties and significant sound insulation effects to meet the ever-changing market demand. Summary of the invention

[0003] The present invention provides a lightweight sound-insulating rock wool board and a preparation method thereof, which solves the problem of poor sound insulation and mechanical properties of the lightweight rock wool board in the related art.

[0004] The technical solution of the present invention is as follows: The present invention provides a lightweight sound insulation rock wool board, comprising the following raw materials in parts by weight: 50-70 parts of basalt, 20-30 parts of slag, 10-15 parts of dolomite, 8-14 parts of fly ash, 16-20 parts of modified hollow glass microspheres, and 15-20 parts of a binder; The modified hollow glass microspheres are obtained by modifying the hollow glass microspheres with a modifier; the modifier includes isopropyl tri(dodecylbenzenesulfonyl) titanate.

[0005] As a further technical solution, the amount of the modifier added is 4% to 6% of the mass of the hollow glass microspheres.

[0006] As a further technical solution, the modifier also includes polyaramid.

[0007] In the present invention, the hollow glass microspheres are modified by using titanate coupling agent and polyaramid to further improve the sound insulation and mechanical properties of the rock wool board.

[0008] As a further technical solution, the mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:3-5.

[0009] In the present invention, the sound insulation and mechanical properties of the rock wool board are further improved by limiting the mass ratio of polyaramid to isopropyl tri(dodecylbenzenesulfonyl) titanate to 1:3-5.

[0010] As a further technical solution, the mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:4.

[0011] As a further technical solution, the preparation method of the modified hollow glass microspheres comprises the following steps: dissolving a modifier in toluene, adding the modifier into the hollow glass microspheres for modification, and obtaining the modified hollow glass microspheres after drying.

[0012] As a further technical solution, the modification temperature is 60-70°C and the modification time is 5-7h.

[0013] As a further technical solution, the adhesive is composed of 6 to 9 parts of adhesive resin, 0.5 to 0.8 parts of water repellent, 1 to 2 parts of surfactant, and 15 to 20 parts of water.

[0014] As a further technical solution, the method for preparing the adhesive comprises the following steps: mixing an adhesive resin, a hydrophobic agent, a surfactant and water to obtain the adhesive.

[0015] As a further technical solution, the adhesive resin includes one or both of phenolic resin and epoxy resin.

[0016] As a further technical solution, when the adhesive resin is composed of phenolic resin and epoxy resin, the mass ratio of phenolic resin to epoxy resin is 1:4-7.

[0017] In the present invention, the sound insulation and mechanical properties of the lightweight rock wool board are further improved by limiting the adhesive resin to consist of a phenolic resin and an epoxy resin in a mass ratio of 1:4-7.

[0018] As a further technical solution, the water repellent includes one or both of an organic silicon water repellent and a calcium stearate water repellent.

[0019] As a further technical solution, the surfactant is isomeric tridecanol polyoxyethylene ether.

[0020] The present invention also provides a method for preparing a lightweight sound-insulating rock wool board, comprising the following steps: S1. crushing, sieving and melting basalt, slag, dolomite and fly ash to obtain magma; S2, spinning the magma by centrifugation to form lightweight rock wool fibers, spraying a binder, and collecting the fibers to obtain rock wool felt; S3. The rock wool felt is stacked by a pendulum machine, and modified hollow glass beads are sprayed on the surface of the rock wool felt, and then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0021] The working principle and beneficial effects of the present invention are: In the present invention, relatively lightweight raw materials such as basalt, slag, dolomite, fly ash, etc. are used in specific proportions, and hollow glass microspheres are added, so that the overall weight of the board is relatively light. The rock wool board can form a porous structure during the preparation process, and after the hollow glass microspheres are modified by isopropyl tri(dodecylbenzenesulfonyl) titanate, the sound insulation and mechanical properties of the rock wool board are further improved, solving the problem of poor sound insulation and mechanical properties of lightweight rock wool boards. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the following embodiments and comparative examples: Hollow glass microspheres, particle size 200 mesh; polyaromatic amide, brand: xm-001, purchased from Dongguan Xinmiao New Materials Co., Ltd.; phenolic resin, model: 2402; epoxy resin, model: BE188; silicone water repellent, model: KR-750; calcium stearate water repellent, model: Calsan 50; isomeric tridecanol polyoxyethylene ether, model: 1303.

[0024] Example 1 A method for preparing a lightweight sound-insulating rock wool board comprises the following steps: S1. 50 parts of basalt, 20 parts of slag, 10 parts of dolomite and 8 parts of fly ash are crushed, sieved and melted to obtain magma; S2, spinning the magma by centrifugation to form lightweight rock wool fibers, spraying a binder, and collecting the fibers to obtain rock wool felt; S3. The rock wool felt is stacked by a pendulum machine, and modified hollow glass beads are sprayed on the surface of the rock wool felt, and then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0025] The preparation method of modified hollow glass microspheres comprises the following steps: dissolving 2.4 g of isopropyl tri(dodecylbenzenesulfonyl) titanate in 500 mL of toluene, adding 60 g of hollow glass microspheres, heating to 60° C., stirring at this temperature for 7 hours, and obtaining modified hollow glass microspheres after drying.

[0026] The preparation method of the adhesive comprises the following steps: 6 parts of phenolic resin, 0.5 parts of organic silicon water repellent, 1 part of isomeric tridecanol polyoxyethylene ether and 15 parts of water are uniformly mixed to obtain the adhesive.

[0027] Example 2 A method for preparing a lightweight sound-insulating rock wool board comprises the following steps: S1. 60 parts of basalt, 25 parts of slag, 12 parts of dolomite and 11 parts of fly ash are crushed, sieved and melted to obtain magma; S2, spinning the magma by centrifugation to form lightweight rock wool fibers, spraying a binder, and collecting the fibers to obtain rock wool felt; S3. The rock wool felt is stacked by a pendulum machine, and modified hollow glass beads are sprayed on the surface of the rock wool felt, and then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0028] The preparation method of modified hollow glass microspheres comprises the following steps: dissolving 3 g of isopropyl tri(dodecylbenzenesulfonyl) titanate in 500 mL of toluene, adding 60 g of hollow glass microspheres, heating to 60° C., stirring for 6 hours, and drying to obtain modified hollow glass microspheres.

[0029] The preparation method of the adhesive comprises the following steps: 7 parts of phenolic resin, 0.7 parts of silicone water repellent, 1 part of isomeric tridecanol polyoxyethylene ether and 18 parts of water are uniformly mixed to obtain the adhesive.

[0030] Example 3 A method for preparing a lightweight sound-insulating rock wool board comprises the following steps: S1. 70 parts of basalt, 30 parts of slag, 15 parts of dolomite and 14 parts of fly ash are crushed, sieved and melted to obtain magma; S2, spinning the magma by centrifugation to form lightweight rock wool fibers, spraying a binder, and collecting the fibers to obtain rock wool felt; S3. The rock wool felt is stacked by a pendulum machine, and modified hollow glass beads are sprayed on the surface of the rock wool felt, and then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0031] The preparation method of modified hollow glass microspheres comprises the following steps: dissolving 3.6 g of isopropyl tri(dodecylbenzenesulfonyl) titanate in 500 mL of toluene, adding 60 g of hollow glass microspheres, heating to 70° C., stirring for 5 hours, and drying to obtain modified hollow glass microspheres.

[0032] The preparation method of the binder comprises the following steps: 9 parts of phenolic resin, 0.8 parts of calcium stearate hydrophobic agent, 2 parts of isomeric tridecanol polyoxyethylene ether and 20 parts of water are uniformly mixed to obtain the binder.

[0033] Example 4 The present embodiment is different from the embodiment 1 only in that the preparation method of the modified hollow glass microspheres comprises the following steps: dissolving 1.2 g of isopropyl tri(dodecylbenzenesulfonyl) titanate and 1.2 g of polyaromatic amide in 500 mL of toluene, adding 60 g of hollow glass microspheres, heating to 60° C., stirring at this temperature for 7 h, and obtaining the modified hollow glass microspheres after drying.

[0034] Example 5 The only difference between this embodiment and embodiment 4 is that the added amount of isopropyl tri(dodecylbenzenesulfonyl) titanate is 2.1 g, and the added amount of polyaromatic amide is 0.3 g.

[0035] Example 6 The only difference between this embodiment and embodiment 4 is that the added amount of isopropyl tri(dodecylbenzenesulfonyl) titanate is 1.8 g, and the added amount of polyaromatic amide is 0.6 g.

[0036] Example 7 The only difference between this embodiment and embodiment 4 is that the added amount of isopropyl tri(dodecylbenzenesulfonyl) titanate is 1.92 g, and the added amount of polyaromatic amide is 0.48 g.

[0037] Example 8 The only difference between this embodiment and embodiment 4 is that the added amount of isopropyl tri(dodecylbenzenesulfonyl) titanate is 2 g and the added amount of polyaromatic amide is 0.4 g.

[0038] Example 9 The only difference between this embodiment and embodiment 7 is that the phenolic resin is replaced by an equal amount of epoxy resin.

[0039] Example 10 The only difference between this embodiment and embodiment 7 is that the phenolic resin is replaced by equal amounts of phenolic resin and epoxy resin in a mass ratio of 1:1.

[0040] Embodiment 11 The only difference between this embodiment and Embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:9.

[0041] Example 12 The only difference between this embodiment and embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:4.

[0042] Embodiment 13 The only difference between this embodiment and embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:7.

[0043] Comparative Example 1 The only difference between this comparative example and Example 1 is that the modified hollow glass microspheres are replaced by an equal amount of hollow glass microspheres.

[0044] Comparative Example 2 The only difference between this comparative example and Example 1 is that isopropyl tri(dodecylbenzenesulfonyl) titanate is replaced by an equal amount of γ-aminopropyltriethoxysilane.

[0045] Comparative Example 3 The only difference between this comparative example and Example 1 is that isopropyl tri(dodecylbenzenesulfonyl) titanate is replaced by an equal amount of isopropyl triisostearate titanate.

[0046] The sound insulation and thermal insulation properties of the rock wool boards prepared in Examples 1 to 13 and Comparative Examples 1 to 3 were tested respectively, and the specific testing methods are as follows: Sound insulation: The sound absorption coefficient of the rock wool board is tested using the standing wave tube method; Mechanical properties: The compressive strength of the rock wool board is measured according to the test method in GB / T 13480-2014 "Determination of compressive properties of thermal insulation products for building"; The test results are shown in Table 1.

[0047] Table 1 Rock wool board performance test results

[0048] Compared with Example 1, unmodified hollow glass microspheres were added in Comparative Example 1, hollow glass microspheres modified by γ-aminopropyltriethoxysilane were added in Comparative Example 2, and hollow glass microspheres modified by isopropyl triisostearate titanate were added in Comparative Example 3. As a result, the sound absorption coefficient and compression strength of the rock wool boards prepared in Comparative Examples 1 to 3 were lower than those in Example 1, indicating that the modification of hollow glass microspheres by isopropyl tri(dodecylbenzenesulfonyl) titanate can improve the sound insulation and mechanical properties of the rock wool boards.

[0049] Compared with Example 1, in Example 4, polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate are used to modify the hollow glass microspheres at the same time, and in Examples 5 to 8, the mass ratio of polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate is changed. As a result, the sound absorption coefficient and compressive strength of the rock wool board prepared in Examples 4 to 8 are higher than those in Example 1, indicating that the use of polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate to modify the hollow glass microspheres at the same time can improve the sound insulation and mechanical properties of the rock wool board; Comparison of Examples 4 to 8 It was found that the sound absorption coefficient and compressive strength of the rock wool board prepared in Examples 6 to 8 were higher than those in Examples 4 and 5, indicating that when the mass ratio of polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:3 to 5, the sound insulation and mechanical properties of the rock wool board can be further improved; by comparing Examples 6 to 8, it was found that the sound absorption coefficient and compressive strength of the rock wool board prepared in Example 7 were higher than those in Examples 6 and 8, indicating that when the mass ratio of polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:4, the obtained rock wool board has the best sound insulation and mechanical properties.

[0050] Compared with Example 7, the phenolic resin in Example 9 was replaced with an equal amount of epoxy resin, and the phenolic resin and epoxy resin were added at the same time in Example 10. As a result, the sound absorption coefficient and compression strength of the rock wool board prepared in Example 10 were higher than those in Examples 7 and 9, indicating that the simultaneous addition of phenolic resin and epoxy resin can improve the sound insulation and mechanical properties of the rock wool board.

[0051] Compared with Example 10, the mass ratio of phenolic resin to epoxy resin was changed in Examples 11 to 13. As a result, the sound absorption coefficient and compressive strength of the rock wool board prepared in Examples 12 to 13 were higher than those in Examples 10 and 11, indicating that when the mass ratio of phenolic resin to epoxy resin is 1:4 to 7, the sound insulation and mechanical properties of the rock wool board can be further improved.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight sound-insulating rock wool board, characterized in that: The raw materials include the following components in parts by weight: 50-70 parts of basalt, 20-30 parts of slag, 10-15 parts of dolomite, 8-14 parts of fly ash, 16-20 parts of modified hollow glass microspheres, and 15-20 parts of a binder; The modified hollow glass microspheres are obtained by modifying the hollow glass microspheres with a modifier; the modifier includes isopropyl tri(dodecylbenzenesulfonyl) titanate.

2. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The amount of the modifier added is 4% to 6% of the mass of the hollow glass microspheres.

3. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The modifier also includes polyaramid.

4. A lightweight sound insulation rock wool board according to claim 3, characterized in that: The mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:3-5.

5. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The preparation method of the modified hollow glass microspheres comprises the following steps: dissolving a modifier in toluene, adding the modifier into the hollow glass microspheres for modification, and obtaining the modified hollow glass microspheres after drying.

6. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The adhesive is composed of 6-9 parts of adhesive resin, 0.5-0.8 parts of water repellent, 1-2 parts of surfactant and 15-20 parts of water.

7. A lightweight sound insulation rock wool board according to claim 6, characterized in that: The adhesive resin includes one or both of phenolic resin and epoxy resin.

8. A lightweight sound-insulating rock wool board according to claim 7, characterized in that: When the adhesive resin consists of phenolic resin and epoxy resin, the mass ratio of the phenolic resin to the epoxy resin is 1:4-7.

9. A lightweight sound insulation rock wool board according to claim 6, characterized in that: The water repellent includes one or both of an organic silicon water repellent and a calcium stearate water repellent.

10. A method for preparing a lightweight sound-insulating rock wool board according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. crushing, sieving and melting basalt, slag, dolomite and fly ash to obtain magma; S2, spinning the magma by centrifugation to form lightweight rock wool fibers, spraying a binder, and collecting the fibers to obtain rock wool felt; S3. The rock wool felt is stacked by a pendulum machine, and modified hollow glass beads are sprayed on the surface of the rock wool felt, and then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

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