Lightweight sound-insulating rock wool board and preparation method thereof

Abstract

The present invention relates to the technical field of rock wool thermal insulation materials and proposes a lightweight sound-insulating rock wool board and a preparation method thereof. The lightweight sound-insulating rock wool board comprises 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 hollow glass microspheres modified with a modifier; the modifier comprises isopropyl tri(dodecylbenzenesulfonyl) titanate. The above technical solution solves the problem of poor sound insulation of rock wool boards in related technologies.

Description

Technical Field

[0001] The present 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 a stable 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 a stable 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 currently on the market have certain advantages in terms of thermal insulation, but have the problem of poor mechanical properties. This means that in actual applications, lightweight rock wool boards may not be able to withstand certain external forces, and 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 lightweight rock wool boards in the related art.

[0004] The technical solutions of the present invention are as follows:

[0005] The present invention provides a lightweight sound-insulating 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;

[0006] The modified hollow glass microspheres are obtained by modifying hollow glass microspheres with a modifier; the modifier includes isopropyl tri(dodecylbenzenesulfonyl) titanate.

[0007] As a further technical solution, the amount of the modifier added is 4% to 6% of the mass of the hollow glass microspheres.

[0008] As a further technical solution, the modifier further includes polyaramid.

[0009] In the present invention, the hollow glass microspheres are modified by using a titanate coupling agent and polyaramid, thereby further improving the sound insulation and mechanical properties of the rock wool board.

[0010] As a further technical solution, the mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:3-5.

[0011] 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.

[0012] As a further technical solution, the mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:4.

[0013] As a further technical solution, the preparation method of the modified hollow glass microspheres includes 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.

[0014] As a further technical solution, the modification temperature is 60-70° C., and the modification time is 5-7 hours.

[0015] As a further technical solution, the adhesive is composed of 6 to 9 parts of adhesive resin, 0.5 to 0.8 parts of hydrophobic agent, 1 to 2 parts of surfactant, and 15 to 20 parts of water.

[0016] As a further technical solution, the preparation method of the adhesive comprises the following steps: mixing an adhesive resin, a hydrophobic agent, a surfactant and water to obtain the adhesive.

[0017] As a further technical solution, the adhesive resin includes one or both of phenolic resin and epoxy resin.

[0018] As a further technical solution, when the adhesive resin consists of phenolic resin and epoxy resin, the mass ratio of phenolic resin to epoxy resin is 1:4-7.

[0019] 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 phenolic resin and epoxy resin in a mass ratio of 1:4-7.

[0020] As a further technical solution, the hydrophobic agent includes one or both of an organic silicon hydrophobic agent and a calcium stearate hydrophobic agent.

[0021] As a further technical solution, the surfactant is isomeric tridecanol polyoxyethylene ether.

[0022] The present invention also provides a method for preparing a lightweight sound-insulating rock wool board, comprising the following steps:

[0023] S1. crushing, sieving, and melting basalt, slag, dolomite, and fly ash to obtain magma;

[0024] S2, spinning the magma through centrifugation to form lightweight rock wool fibers, spraying a binder at the same time, and collecting the fibers to obtain rock wool felt;

[0025] 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. The rock wool felt is then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0026] The working principle and beneficial effects of the present invention are:

[0027] 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 to make the overall board lighter. 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

[0028] 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 embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0029] In the following examples and comparative examples:

[0030] Hollow glass microspheres, particle size 200 mesh; polyaramid, brand: XM-001, purchased from Dongguan Xinmiao New Materials Co., Ltd.; phenolic resin, model: 2402; epoxy resin, model: BE188; silicone hydrophobic agent, model: KR-750; calcium stearate hydrophobic agent, model: Calsan 50; isomeric tridecanol polyoxyethylene ether, model: 1303.

[0031] Example 1

[0032] A method for preparing a lightweight sound-insulating rock wool board comprises the following steps:

[0033] 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;

[0034] S2, spinning the magma through centrifugation to form lightweight rock wool fibers, spraying a binder at the same time, and collecting the fibers to obtain rock wool felt;

[0035] 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. The rock wool felt is then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0036] 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 drying to obtain modified hollow glass microspheres.

[0037] The preparation method of the adhesive comprises the following steps: uniformly mixing 6 parts of phenolic resin, 0.5 parts of organic silicon hydrophobic agent, 1 part of isomeric tridecanol polyoxyethylene ether and 15 parts of water to obtain the adhesive.

[0038] Example 2

[0039] A method for preparing a lightweight sound-insulating rock wool board comprises the following steps:

[0040] 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;

[0041] S2, spinning the magma through centrifugation to form lightweight rock wool fibers, spraying a binder at the same time, and collecting the fibers to obtain rock wool felt;

[0042] 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. The rock wool felt is then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0043] 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 at this temperature for 6 hours, and drying to obtain modified hollow glass microspheres.

[0044] The preparation method of the adhesive comprises the following steps: uniformly mixing 7 parts of phenolic resin, 0.7 parts of organosilicon hydrophobic agent, 1 part of isomeric tridecanol polyoxyethylene ether and 18 parts of water to obtain the adhesive.

[0045] Example 3

[0046] A method for preparing a lightweight sound-insulating rock wool board comprises the following steps:

[0047] 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;

[0048] S2, spinning the magma through centrifugation to form lightweight rock wool fibers, spraying a binder at the same time, and collecting the fibers to obtain rock wool felt;

[0049] 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. The rock wool felt is then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

[0050] 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 at this temperature for 5 hours, and drying to obtain modified hollow glass microspheres.

[0051] The preparation method of the binder comprises the following steps: uniformly mixing 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 to obtain the binder.

[0052] Example 4

[0053] The only difference between this embodiment and Example 1 is that the preparation method of the modified hollow glass microspheres includes 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 drying to obtain modified hollow glass microspheres.

[0054] Example 5

[0055] The only difference between this embodiment and embodiment 4 is that the amount of isopropyl tri(dodecylbenzenesulfonyl) titanate added is 2.1 g, and the amount of polyaromatic amide added is 0.3 g.

[0056] Example 6

[0057] The only difference between this embodiment and embodiment 4 is that the amount of isopropyl tri(dodecylbenzenesulfonyl) titanate added is 1.8 g, and the amount of polyaromatic amide added is 0.6 g.

[0058] Example 7

[0059] The only difference between this embodiment and embodiment 4 is that the amount of isopropyl tri(dodecylbenzenesulfonyl) titanate added is 1.92 g, and the amount of polyaromatic amide added is 0.48 g.

[0060] Example 8

[0061] The only difference between this embodiment and embodiment 4 is that the amount of isopropyl tri(dodecylbenzenesulfonyl) titanate added is 2 g, and the amount of polyaromatic amide added is 0.4 g.

[0062] Example 9

[0063] The only difference between this embodiment and embodiment 7 is that the phenolic resin is replaced by an equal amount of epoxy resin.

[0064] Example 10

[0065] 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.

[0066] Example 11

[0067] The only difference between this embodiment and embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:9.

[0068] Example 12

[0069] The only difference between this embodiment and embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:4.

[0070] Example 13

[0071] The only difference between this embodiment and embodiment 10 is that the mass ratio of phenolic resin to epoxy resin is 1:7.

[0072] Comparative Example 1

[0073] The only difference between this comparative example and Example 1 is that the modified hollow glass microspheres are replaced with an equal amount of hollow glass microspheres.

[0074] Comparative Example 2

[0075] 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.

[0076] Comparative Example 3

[0077] 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.

[0078] 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. The specific testing methods are as follows:

[0079] Sound insulation: The standing wave tube method is used to test the sound absorption coefficient of the rock wool board;

[0080] Mechanical properties: The compressive strength of the rock wool board was determined according to the test method in GB / T 13480-2014 "Determination of compressive properties of thermal insulation products for building use";

[0081] The test results are shown in Table 1.

[0082] Table 1 Rock wool board performance test results

[0083]

[0084] 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 compressive 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 with isopropyl tri(dodecylbenzenesulfonyl) titanate can improve the sound insulation and mechanical properties of the rock wool boards.

[0085] Compared with Example 1, in Example 4, the hollow glass microspheres were modified simultaneously with polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate, and the mass ratio of polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate was changed in Examples 5 to 8. As a result, the sound absorption coefficient and compressive strength of the rock wool boards prepared in Examples 4 to 8 were higher than those in Example 1, indicating that the modification of hollow glass microspheres with polyaromatic amide and isopropyl tri(dodecylbenzenesulfonyl) titanate can improve the sound insulation and mechanical properties of the rock wool boards; Comparative 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.

[0086] 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 compressive 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.

[0087] 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 boards 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.

[0088] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection 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 hollow glass microspheres with a modifier; the modifier includes isopropyl tri(dodecylbenzenesulfonyl) titanate and polyaromatic amide; the mass ratio of the polyaromatic amide to isopropyl tri(dodecylbenzenesulfonyl) titanate is 1:3-5.

2. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The addition amount of the modifier 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 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 drying to obtain the modified hollow glass microspheres.

4. A lightweight sound insulation rock wool board according to claim 1, characterized in that: The adhesive consists 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.

5. A lightweight sound-insulating rock wool board according to claim 4, characterized in that: The adhesive resin includes one or both of phenolic resin and epoxy resin.

6. A lightweight sound-insulating rock wool board according to claim 5, 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.

7. The lightweight sound-insulating rock wool board according to claim 4, characterized in that: The hydrophobic agent includes one or both of an organic silicon hydrophobic agent and a calcium stearate hydrophobic agent.

8. The method for preparing a lightweight sound-insulating rock wool board according to any one of claims 1 to 7, 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 through centrifugation to form lightweight rock wool fibers, spraying a binder at the same time, 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. The rock wool felt is then pleated and pressurized to obtain a lightweight sound insulation rock wool board.

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