Thermal insulation and sound insulation material and preparation method thereof

Abstract

The invention discloses a thermal insulation and sound insulation material and a preparation method thereof, and the thermal insulation and sound insulation material comprises the following components by mass: 30-40 parts of cement; 10 to 15 parts of ultra-light aerogel particles; 5-10 parts of a phase change material; 8-12 parts of a vacuum insulated panel; 15 to 20 parts of foam glass particles; 0.5 to 2 parts of a fiber reinforced material; 0.5 to 1 part of a water reducing agent; 0.3 to 0.8 part of a thickening agent; the heat preservation and sound insulation layer material prepared by the preparation method of the heat preservation and sound insulation material can simultaneously have heat preservation (the heat conductivity coefficient is as low as 0.025 W / m.K) and sound insulation (48 dB).

Description

Technical Field

[0001] The present invention relates to the technical field of sound insulation materials, and in particular to a thermal insulation and sound insulation material and a preparation method thereof. Background Art

[0002] The construction industry is experiencing a growing demand for thermal and sound insulation materials. Traditional insulation materials, such as rock wool and extruded polystyrene (XPS), have limitations, including limited sound insulation, high thermal conductivity, and insufficient durability. Therefore, there is an urgent need for building materials that combine excellent thermal insulation and sound insulation to meet the demands of green building development.

[0003] The performance limitations of traditional materials are analyzed in detail as follows: 1) Rock wool / glass wool inorganic materials: Thermal insulation: The thermal conductivity is approximately 0.035-0.045 W / (m·K). Meeting energy-saving standards (such as a 75% energy-saving rate requirement) relies on thickening the insulation layer, which increases building load and costs. Sound insulation: The sound insulation for medium and high frequency noise (>1000 Hz) is acceptable (25-30 dB), but the sound insulation effect for low frequency noise (<250 Hz) is poor (<15 dB), making it difficult to cope with urban noise pollution such as traffic and equipment vibration; Durability: After moisture absorption, the thermal conductivity increases by more than 30%, the fiber ages and falls off, resulting in performance degradation, and there is a risk of sedimentation and hollowing.

[0004] 2) Organic foam materials (XPS / EPS / PU): Thermal insulation: XPS has a low thermal conductivity (0.028-0.032 W / (m·K)), but flame retardancy requires the addition of a large amount of additives (such as HBCD), and releases toxic gases at high temperatures; Sound insulation: The closed-cell structure reflects sound waves rather than absorbs them, resulting in a weighted sound insulation value (Rw) of only 20-25 dB, and is unable to suppress solid-borne sound (such as floor impact noise). Lifespan defects: UV aging causes chalking, PU hydrolyzes when wet, EPS is flammable and has low compressive strength (easy to deform).

[0005] In summary, the thermal insulation and sound insulation layer is the key to the thermal insulation and sound insulation design of the floor slab. The material selection and construction of the thermal insulation and sound insulation layer need to take into account both thermal insulation and sound insulation performance. Summary of the Invention

[0006] The purpose of the present invention is to provide a thermal insulation and sound insulation material and a preparation method thereof. The thermal insulation and sound insulation layer material prepared by the method can simultaneously have the advantages of thermal insulation (thermal conductivity as low as 0.025 W / m·K) and sound insulation performance (48 dB).

[0007] To achieve the above objectives, the following technical solutions are adopted: A thermal insulation and sound insulation material, The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 30-40 parts Ultra-light aerogel particles: 10-15 parts Phase change material: 5-10 parts Vacuum insulation panels: 8-12 pieces Foam glass particles: 15-20 parts Fiber reinforcement: 0.5-2 parts Water reducing agent: 0.5-1 part Thickener: 0.3-0.8 parts Water: The balance is water.

[0008] As a further preferred embodiment, the cement is 42.5R Portland cement.

[0009] As a further preferred embodiment, the phase change material is microcapsulated paraffin.

[0010] As a further preferred embodiment, the vacuum insulation panel is VIP powder.

[0011] As a further preferred embodiment, the fiber reinforcement material is any one or more of PVA fiber, PBO fiber, and ultra-high molecular weight polyethylene fiber.

[0012] As a further preferred embodiment, the water reducer is any one or more of polycarboxylic acid powder, aminosulfonates, and lignin sulfonates.

[0013] As a further preferred embodiment, the thickener is hydroxypropyl methylcellulose.

[0014] A method for preparing a thermal insulation and sound insulation material, the thermal insulation and sound insulation material comprising the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to degas.

[0015] After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

[0016] The thermal insulation and sound insulation material of the present invention and the preparation method thereof have the following beneficial effects: The thermal conductivity of the material of the present invention is as low as 0.025 W / m·K, which is much lower than that of ordinary insulation mortar (0.065 W / m·K) and XPS board (0.030 W / m·K), and also lower than the samples in Comparative Examples 1 and 2, and has better thermal insulation performance.

[0017] The sound insulation effect is significant, which can effectively reduce noise by 48 dB, which is 8 dB higher than XPS board and 13 dB higher than ordinary thermal insulation mortar. It is also better than the samples of Comparative Examples 1 and 2.

[0018] The compressive strength reaches 7.5 MPa, which is 71% higher than that of XPS board and 25% higher than that of ordinary thermal insulation mortar. It is better than 6.5 MPa and 5.5 MPa of the samples of Comparative Examples 1 and 2, respectively. The sample of Example 1 is more able to meet the requirements of building structure.

[0019] This invention utilizes a fiber reinforcement material composed of a mixture of PVA and PBO fibers, and a corresponding water-reducing agent composed of a mixture of aminosulfonates and ligninsulfonates. The resulting product offers optimal overall performance, balancing thermal insulation and sound insulation. By combining the advantages of aerogel particles, phase change materials, vacuum insulation panels, and foam glass, it exhibits ultra-low thermal conductivity, excellent sound insulation, and good mechanical properties. It is widely applicable in building energy conservation and sound insulation projects, and has promising market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a picture of the finished product after construction of the sample in Example 1 of the thermal insulation and sound insulation material of the present invention; Figure 2 This is a finished product diagram of ordinary inorganic thermal insulation mortar construction in comparative example 3 in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described below with reference to the embodiments and accompanying drawings: A method for preparing a thermal insulation and sound insulation material, the thermal insulation and sound insulation material comprising the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to degas.

[0022] After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

[0023] The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 30-40 parts Ultra-light aerogel particles: 10-15 parts Phase change material: 5-10 parts Vacuum insulation panels: 8-12 pieces Foam glass particles: 15-20 parts Fiber reinforcement: 0.5-2 parts Water reducing agent: 0.5-1 part Thickener: 0.3-0.8 parts Water: The balance is water.

[0024] The cement is 42.5R Portland cement.

[0025] The phase change material is microcapsulated paraffin.

[0026] The vacuum insulation panel is VIP powder.

[0027] The fiber reinforcement material is any one or more of PVA fiber, PBO fiber, and ultra-high molecular weight polyethylene fiber.

[0028] The water reducing agent is any one or more of polycarboxylic acid powder, aminosulfonates, and ligninsulfonates.

[0029] In the present invention: VIP powder is the powder after the vacuum insulation panel is crushed, and the vacuum insulation panel is made into VIP powder.

[0030] Requirements for vacuum insulation panels: thermal conductivity is 0.002-0.004w / mk, and the core material of the vacuum insulation panel is glass fiber core material.

[0031] Example 1 A method for preparing a thermal insulation and sound insulation material, the thermal insulation and sound insulation material comprising the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to degas.

[0032] After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

[0033] The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 35 parts Ultralight aerogel particles: 10 parts Phase change material: 6 parts Vacuum insulation panels: 9 pieces Foam glass particles: 18 parts Fiber reinforcement: 2 parts Water reducing agent: 0.8 parts Thickener: 0.6 parts Water: The balance is water (subject to forming a castable slurry).

[0034] The cement is 42.5R Portland cement.

[0035] The phase change material is microcapsulated paraffin.

[0036] The vacuum insulation panel is VIP powder.

[0037] The fiber reinforcement material is a mixture of 1 part PVA fiber and 1 part PBO fiber.

[0038] The water reducing agent comprises 0.3 parts of aminosulfonates and 0.3 parts of ligninsulfonates.

[0039] Comparative Example 1 A method for preparing a thermal insulation and sound insulation material, the thermal insulation and sound insulation material comprising the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to degas.

[0040] After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

[0041] The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 35 parts Ultralight aerogel particles: 10 parts Phase change material: 6 parts Vacuum insulation panels: 9 pieces Foam glass particles: 18 parts Fiber reinforcement: 2 parts Water reducing agent: 0.8 parts Thickener: 0.6 parts Water: The balance is water (subject to forming a castable slurry).

[0042] The cement is 42.5R Portland cement.

[0043] The phase change material is microcapsulated paraffin.

[0044] The vacuum insulation panel is VIP powder.

[0045] The fiber reinforcement material is 2 parts of PVA fiber.

[0046] The water reducing agent is 0.6 parts of aminosulfonate.

[0047] Comparative Example 2 A method for preparing a thermal insulation and sound insulation material, the thermal insulation and sound insulation material comprising the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to degas.

[0048] After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

[0049] The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 35 parts Ultralight aerogel particles: 10 parts Phase change material: 6 parts Vacuum insulation panels: 9 pieces Foam glass particles: 18 parts Fiber reinforcement: 2 parts Water reducing agent: 0.8 parts Thickener: 0.6 parts Water: The balance is water (subject to forming a castable slurry).

[0050] The cement is 42.5R Portland cement.

[0051] The phase change material is microcapsulated paraffin.

[0052] The vacuum insulation panel is VIP powder.

[0053] The fiber reinforcement material is a mixture of 1 part PVA fiber and 1 part PBO fiber.

[0054] The water reducing agent is 0.6 parts of lignin sulfonate.

[0055] Comparative Example 3 In Comparative Example 3: Comparative sample 1 (ordinary thermal insulation mortar), test results are shown in Table 1.

[0056] Comparative Example 4 In Comparative Example 4: Comparative sample 2 (XPS board), test results are shown in Table 1.

[0057] Comparative Example 5 The difference between Comparative Example 5 and Example 1 is that the vacuum insulation panel is not contained, that is, VIP fine powder is not contained.

[0058] Performance Tests and Experimental Data In order to verify the performance of the material of the present invention, samples were prepared and comparative experiments were performed. Result Analysis The thermal conductivity of the material of the present invention is as low as 0.025 W / m·K, which is much lower than that of ordinary insulation mortar (0.065 W / m·K) and XPS board (0.030 W / m·K), and also lower than the samples in Comparative Examples 1 and 2, and has better thermal insulation performance.

[0059] The sound insulation effect is significant, which can effectively reduce noise by 48 dB, which is 8 dB higher than XPS board and 13 dB higher than ordinary thermal insulation mortar. It is also better than the samples of Comparative Examples 1 and 2.

[0060] The compressive strength reaches 7.5 MPa, which is 71% higher than that of XPS board and 25% higher than that of ordinary thermal insulation mortar. It is better than 6.5 MPa and 5.5 MPa of the samples of Comparative Examples 1 and 2, respectively. The sample of Example 1 is more able to meet the requirements of building structure.

[0061] From the comparison between the embodiment and comparative example 5, it can be seen that when no VIP micropowder is added, the thermal insulation performance of the material decreases significantly, indicating that the contribution of the VIP component to the thermal insulation performance of the material is irreplaceable, verifying the necessity of VIP micropowder in the formula composition of the present invention.

[0062] In summary, the present invention provides a new type of thermal insulation and sound insulation material that fully combines the advantages of aerogel particles, phase change materials, vacuum insulation panels and foam glass. It has ultra-low thermal conductivity, excellent sound insulation performance, and good mechanical properties. It can be widely used in building energy conservation and sound insulation projects, and has good market application prospects.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent transformations made using the present invention are within the scope of patent protection of the present invention.

Claims

1. A thermal insulation and sound insulation material, characterized in that: The components of the thermal insulation and sound insulation material are calculated by weight and include the following: Cement: 30-40 parts Ultra-light aerogel particles: 10-15 parts Phase change material: 5-10 parts Vacuum insulation panels: 8-12 pieces Foam glass particles: 15-20 parts Fiber reinforcement: 0.5-2 parts Water reducing agent: 0.5-1 part Thickener: 0.3-0.8 parts Water: The balance is water.

2. The thermal insulation and sound insulation material according to claim 1, characterized in that: The cement is 42.5R Portland cement.

3. The thermal insulation and sound insulation material according to claim 1, characterized in that: The phase change material is microcapsulated paraffin.

4. The thermal insulation and sound insulation material according to claim 1, characterized in that: The vacuum insulation panel is VIP powder.

5. The thermal insulation and sound insulation material according to claim 1, characterized in that: The fiber reinforcement material is any one or more of PVA fiber, PBO fiber, and ultra-high molecular weight polyethylene fiber.

6. The thermal insulation and sound insulation material according to claim 1, characterized in that: The water reducing agent is any one or more of polycarboxylic acid powder, aminosulfonates, and ligninsulfonates.

7. The thermal insulation and sound insulation material according to claim 1, characterized in that: The thickener is hydroxypropyl methylcellulose.

8. A method for preparing the thermal insulation and sound insulation material according to any one of claims 1 to 7, characterized in that: The thermal insulation and sound insulation material includes the following preparation steps: S1 Raw material pretreatment The ultralight aerogel particles, phase change materials and foam glass particles are uniformly dispersed respectively; The vacuum insulation panels are made into micro powder by mechanical grinding to improve uniformity; S2 ingredient mixing First, dry mix the cement, fiber reinforcement material, and VIP powder evenly; Then add aerogel particles, foam glass particles and phase change material, and continue stirring for 5 minutes; finally add water, water reducer and thickener, and stir until a uniform flow state; S3 forming and curing Pour the mixture in S2 into the mold and use light vibration to exhaust; After curing for 24 hours, demould and cure for 7 days in an environment of 20℃ and relative humidity above 95%; After 28 days of curing, the required thermal insulation and sound insulation material is obtained.

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