TWM652472U - Sound-dampening floor layer, sound-dampening composite sheets comprising the same - Google Patents

Abstract

The disclosure relates to a sound-dampening floor layer (B) and a sound-dampening composite sheets (C) comprising the sound-dampening floor layer (B) and a dissipation layer (A). Excellent sound-dampening effects can be exhibited, environment-friendly, cost-saving and/or energy-saving materials can be adopted, high durability can be exhibted, and applications thereof is highly convenient and stable.

Description

Sound-insulating floor layer and sound-insulating composite board containing it

This creation relates to a sound-insulating floor layer (B) and a sound-insulating composite plate (C) including the sound-insulating floor layer (B), and the sound-insulating floor layer (B) and the sound-insulating composite plate (C). ) manufacturing method.

Today's society has more and more requirements for buildings and building materials, such as environmental protection, cost, performance and other aspects. In terms of environmental protection, such as using low-energy-consuming materials; in terms of cost, such as using waste recycling or improving construction methods; in terms of performance, such as requiring better weather resistance, durability, heat insulation or sound insulation performance.

Common sound-insulating building materials usually include sound-insulating foam, sound-insulating rubber or elastic materials. Cement is also used as a binding material to form a sound-insulating material with a foam structure together with the aggregate. However, the above-mentioned building materials still have their own shortcomings.

Accordingly, there is still a huge demand in the industry for sound insulation building materials that are simpler, more energy-saving, and have wider applicability.

It has been found in this creation that a highly porous layer formed using appropriate aggregates and, where appropriate, cementitious materials can provide significantly superior sound insulation. In particular, the cementing materials used can be materials that are more environmentally friendly, low in cost and/or low in energy consumption. In addition, the highly porous layer formed simultaneously has high durability and provides high convenience and stability in application.

Therefore, this creation provides a sound-insulating floor layer (B), which includes aggregates and optional cementing materials, wherein the aggregates include lightweight aggregates, and the sound-insulating floor layer (B) has at least 25% The porosity of the pore structure, the porosity φ is calculated by the following formula:

Where ρ _app is the apparent density of the sound insulation floor layer (B), and the apparent density is defined as the total weight of the floor layer / (the absolute dense volume of the components of the floor layer + the components of the floor layer The volume of open and closed holes + the total volume of accumulated voids between the components of the floor layer), ρ _theo is the theoretical volume density of the components of the sound insulation floor layer (B), which is defined as the total weight of the floor layer/(floor layer The absolute dense volume of the body's components + the volume of open and closed holes in the floor layer's components).

The invention also provides a sound-insulating composite panel (C), which includes at least one layer of energy-dissipating layer (A) and at least one layer of the sound-insulating floor layer (B).

The invention also provides a method for preparing the sound insulation floor layer body (B), which includes the following steps: (1) mixing aggregates including lightweight aggregates and cementing materials as appropriate; (2) drying the mixture to solidify the structure; and (3) forming the sound insulation floor layer body (B).

The invention also provides a method for preparing a sound-insulating composite panel (C), which includes the following steps: (a) mixing aggregates including lightweight aggregates and cementing materials as appropriate; (b) placing an energy-dissipating layer in the mold (A); (c) injecting the mixture of step (a) into a mold; (d) drying to solidify the structure; and (e) forming the sound-insulating composite panel (C).

(CM): CM base material/base layer

(RC):RC floor

(SF100):SF100

(SF500):SF500

(TF):TF adhesive material

(D'): Energy-dissipating sound insulation device/soundproof floor slab

(A)/(A-1)/(A-2): Energy dissipation layer/energy dissipation layer body

(B)/(B-1)/(B-2): Sound insulation floor layer

(C): Sound insulation composite panels

(T): Tiles

(AD): Tile Adhesive

(D):Floor

(D-1)/(D-2): Floor structure

Figure 1 is an example photo of the sound insulation floor layer (B) of this creation.

Figures 2A to 2C are schematic diagrams of the sound-insulating composite panels (C) used in this creation.

Figures 3A and 3B are schematic diagrams of samples for measuring insulation volume.

Figures 4A and 4B are schematic diagrams and sound insulation effects of the energy-dissipating sound insulation device (D') of the known technology and the floor slab (D) including the sound insulation floor layer (B) of the present invention.

The methods and concepts for implementing this creation will be explained in more detail below.

A. Sound insulation floor layer (B)

Aggregate

The function of the aggregates contained in the sound insulation floor layer (B) of this creation is to provide a stable and highly porous pore structure after stacking. Compared with the soft materials used in traditional sound insulation floor layers (such as rubber, Foam, etc.) or foaming materials have a more stable pore structure and are expected to have higher durability. In addition, the aggregates included in the sound-insulating floor layer (B) of this creation include lightweight aggregates, which not only creates more pores in the sound-insulating floor layer (B), but also greatly reduces the structural weight and reduces the construction cost. There are benefits to workmanship and/or cost.

In a specific example, the aggregate includes lightweight aggregate, and the density of the lightweight aggregate can be 0.15g/cm ³ to 2.5g/cm ³ , for example, it can be at least 0.2g/cm ³ , at least 0.3g/cm ³ , At least 0.4g/cm ³ , at least 0.5g/cm ³ , at least 0.6g/cm ³ , at least 0.7g/cm ³ , at least 0.8g/cm ³ , at least 0.9g/cm ³ , at least 1.0g/cm ³ , at least 1.1g/cm ³ , at least 1.2g/cm ³ , at least 1.3 g/cm ³ , at least 1.4g/cm ³ , at least 1.45g/cm ³ , at least 1.5g/cm ³ , at least 1.55g/cm ³ , at least 1.6 g/cm ³ , at least 1.65g/cm ³ , at least 1.7g/cm ³ , at least 1.75g/cm ³ or at least 1.8g/cm ³ ; or at most 2.45g/cm ³ , at most 2.4g/cm ³ , at most 2.35g/cm ³ , up to 2.3g/cm ³ , up to 2.25g/cm 3 , up to 2.2g/cm ³ , up to 2.15g/cm ³ , up to 2.1g/cm ³ , up to 2.05g/ ^{cm 3 ,} up to 2.0 g/cm ³ , at most 1.95g/cm ³ , at most 1.9g/cm ³ , or at most 1.85g/cm ³ ; or a reasonable range of values consisting of the density at any of the aforementioned endpoints, such as at least 1.9g/cm ³ , at most 1.3g /cm ³ etc. In a specific example, the aggregate includes two or more lightweight aggregates with different densities. In a specific example, the average density of the lightweight aggregate is within the above-mentioned density range of the lightweight aggregate.

An example of a lightweight aggregate material is a silica-aluminum raw material, which contains SiO ₂ and Al ₂ O ₃ as the main components; the content of SiO ₂ can be 48% to 95% by weight, preferably 55% to 80% by weight. % by weight, preferably 60% to 70% by weight, or a reasonable range of values composed of the aforementioned endpoints; the content of Al ₂ O ₃ can be 1% to 30% by weight, preferably 1.5% to 15% by weight %, more preferably 2 to 5% by weight, or a reasonable range of values composed of the aforementioned endpoints. There are a wide range of silica-aluminum raw materials, and natural materials or industrial wastes can be used as raw materials for preparing lightweight porous materials. Examples of natural materials include, but are not limited to, clay, shale, slate, perlite, and the like. Examples of recyclable or waste materials include (but are not limited to) silicone-based business by-products such as flat glass, waste glass containers, waste solar photovoltaic panels, waste automotive glass, waste fiberglass, semiconductor chemical mechanical polishing fluid sludge, water Quenching furnace stone, fly ash, polished quartz brick sludge, waste foundry sand, etc. The composition of raw materials can also be limited or adjusted based on the end use or demand, such as using some natural materials with industrial recycling or waste, or using different types of industrial recycling or waste together, etc. In a specific example, the material of the lightweight aggregate using expanded perlite is natural perlite, the material of the lightweight aggregate of lightweight ceramsite is reservoir sludge, and the material of the lightweight aggregate of floating beads is coal. The material of lightweight aggregate of gray and expanded glass is glass. Lightweight aggregate materials can be processed to produce granular aggregates with a desired density range, or the material itself can have a desired density.

In a specific example, the aggregates further include heavy aggregates, which are aggregates with a larger density than light aggregates. In a specific example, the density of the heavy aggregate may be more than 1.5g/cm ³ to 9.0g/cm ³ , for example, it may be at least 2.6g/cm ³ , at least 2.8g/cm ³ , or at least 3.0g/cm ³ , at least 3.25g/cm ³ , at least 3.5g/cm ³ , at least 4.0g/cm ^{3 , at least 4.5g/cm 3 ,} at least 5.0g/cm ³ or at least 5.5g/cm ³ ; or at most 8.75g/cm ^3. At most 8.5g/cm ³ , at most 8.35g/cm ³ , at most 8.2g/cm ³ , at most 8.0g/cm ³ , at most 7.8g/cm ³ , at most 7.5g/cm ³ , at most 7.0g/cm ³ , at most 6.5g/cm ³ or at most 6.0g/cm ³ ; or a reasonable range of values with a density at any of the aforementioned endpoints, such as at least 6.0g/cm ³ , at most 5.5g/cm ³ , etc. In a specific example, the density of heavy aggregate is 1.8 to 60 times that of light aggregate, such as 2 to 45 times, 2.2 to 30 times, 2.25 to 20 times, 2.33 to 15 times, 2.5 to 10 times, 2.67 to 6.67 times, 3 to 6.5 times, 3.2 to 6.33 times, 3.33 to 6 times, 3.5 to 5.5 times, 3.67 to 5 times, 4 to 4.5 times; or a reasonable range of values consisting of any of the aforementioned endpoints. In a specific example, the difference between the density of the heavy aggregate and the density of the light aggregate is at least or at most 0.4g/cm ³ , 0.45g/cm ³ , 0.5g/cm ³ , 0.55g/cm ³ , 0.6g /cm ³ , 0.65g/cm ³ , ^{0.7g/cm 3 ,} 0.75g/cm ³ , 0.8g/cm 3 , 0.85g/cm ³ , 0.9g/cm ³ , 0.95g/cm ³ , 1.0g/cm ^3. 1.1g/cm ³ , 1.2g/cm ³ , 1.3g/cm ³ , 1.4g/cm ³ , 1.5g/cm ³ , 1.6g/cm ^{3 , 1.7g/cm 3 ,} 1.8g/cm ³ , 1.9g/cm ³ , 2.0g/cm ³ , 2.2g/cm ³ , 2.4g/cm ³ , 2.5g/cm ³ , 2.6g/cm ³ , 2.8g/cm ³ , 3.0g/cm ³ , 3.2g /cm ³ , 3.4g/cm ³ , 3.5g/cm ³ , ^3.6g /cm ³ , 3.8g/cm 3 , 4.0g/cm ³ , 4.2g/cm 3 , 4.4g/cm ³ , ^4.5g /cm ^3. 4.6g/cm ³ , 4.8g/cm ³ , 5.0g/cm ³ , 5.2g/cm 3 , 5.4g/cm ³ , 5.5g/cm ³ , 5.6g/cm ³ , ^5.8g /cm ³ , 6.0g/cm ³ , 6.2g/cm ³ , 6.4g/cm ³ , 6.5 g/cm 3 ^, 6.6g/cm ³ , 6.8g/cm ³ , 7.0g/cm ³ , 7.2g/cm ³ , 7.4g /cm ³ , 7.5g/cm ³ , 7.6g/cm ³ , 7.8g/cm ³ , 8.0g/cm ³ ; or the density difference is within a reasonable range of any of the aforementioned endpoints, such as at least 1.5g/cm ³ , At most 3.5g/cm ³ , 0.5g/cm ³ to.

In a specific example, the heavy aggregates are washed gravel, sand and gravel particles (for example, density is about 2.6g/cm ³ ), steel (for example, density is about 8.0g/cm ³ ), alumina (for example, density is about 3.95g/cm 3 ) cm ³ ), zirconia (for example, density is about 6.0g/cm ³ ), etc.

In a specific example, the aggregate (lightweight aggregate or heavy aggregate) is particles with a particle size of 0.15 to 30mm, such as 0.15 to 5mm, 0.5 to 1mm, 1 to 2mm, 2 to 4mm, 4 to 8mm, 5 to 10mm, 10 to 20mm or 3 to 25mm, or a reasonable range of values consisting of any of the aforementioned endpoints, such as 1mm to 3mm, 8mm to 20mm, etc. In a specific example, the average particle size of the aggregate is about 6 mm, for example, 4-8 mm mixed with 5-10 mm washed stones.

In a specific example, the weight ratio of light aggregate to heavy aggregate is 100:0 (that is, no heavy aggregate is used) to 20:80, such as 90:10 to 25:75, 80:20 to 30:70, 70:30 to 35:65, 60:40 to 40:60 or 55:45 to 45:55, or about 50:50, or a reasonable range of any of the aforementioned endpoints, such as 70:30 to 20:80, 90:10 to 50:50. In a specific example, the volume ratio of light aggregate to heavy aggregate is 100:0 (that is, no heavy aggregate is used) to 35:65, such as about 98:2, about 97:3, about 96 : 4. About 95:5, about 94:6, about 93:7, about 92:8, about 91:9, about 90:10, or 90:10 to 40:60, 85:15 to 45:55, 80:20 to 50:50, 75:25 to 55:45, or 70:30 to 60:40, or a reasonable range of values consisting of any of the aforementioned endpoints.

In a specific example, the sound insulation floor layer (B) includes at least 50% by weight of aggregates, such as at least 60% by weight, at least 66.7% by weight, at least 70% by weight, at least 75% by weight, at least 80% by weight, or at least 85% by weight.

In a specific example, aggregates (whether lightweight aggregates or heavy aggregates) are present in the sound insulation floor layer body (B) in a mixed manner. In a specific example, different aggregates (whether lightweight aggregates or heavy aggregates) are present in the sound insulation floor layer body (B) in a layered manner. In a specific example, different aggregates (whether lightweight aggregates or heavy aggregates) exist in the sound insulation floor layer body (B) in a partially mixed and partially layered manner. In a specific example, the aggregate consists essentially of lightweight aggregate.

cementitious material

In order to maintain the high porosity structure formed by the stacking of (lightweight) aggregates, cementing materials may be used for attachment and retention as appropriate; that is, the sound insulation floor layer (B) contains (lightweight) aggregates and cementing materials, High porosity in the structure. In a specific example, the sound insulation floor layer (B) does not include cementing materials.

In a specific example, the cementing material is partially or completely covered outside the aggregate to provide a highly porous structure formed by attaching the aggregate and retaining the aggregate stack. In a preferred specific example, the cementing material is a single component material with a Shore A hardness of less than 100A or a cementitious composite material with a Shore A hardness of less than 100A. Preferably, Materials below 80A, 60A or 50A. Examples of cementing materials include (but are not limited to) resins, such as epoxy resin (for example, hardness is about 90A or below), polyester resin (for example, Polyflor resin, hardness is about 44A), polyurethane (generally (for example, hardness is about 10A) or High elasticity (for example, hardness is about 1A), rubber, such as silicone rubber (for example, hardness is about 8A), gel (for example, hardness is about 10-30A), natural rubber (for example, hardness is about 45A), synthetic rubber (for example, hardness is about 32 -70A), cement setting materials, such as general cement, elastic cement (for example, hardness is about 30-100A). In a specific example, the cementing material is used in the form of a suspension.

The cementing material in the sound insulation floor layer (B) does not substantially affect the stacking of aggregates. The resulting highly porous structure and sufficient attachment of aggregate content are present. In a specific example, the weight ratio of the aggregate to the cementing material can be 0.8:1 to 9:1, such as 1:1 to 8:1, 2:1 to 7:1, 3:1 to 6:1, 4 :1 to 5:1, or a reasonable range of values consisting of any of the aforementioned endpoints. In a specific example, the sound insulation floor layer (B) includes at most 50% by weight of cementing material, such as at most 40% by weight, at most 33.3% by weight, at most 30% by weight, at most 25% by weight, at most 20% by weight, at most 20% by weight, or at most 20% by weight. 15% by weight or up to 10% by weight.

Porosity

Without being limited by theory, the pore structure of the sound-insulating floor layer (B) of the present invention can provide excellent sound-insulating effect, especially blocking sound or audio of a wide range of frequencies.

Here, the pore structure is characterized by porosity, which is calculated by the following formula:

Where ρ _app is the apparent density of the sound insulation floor layer (B), and the apparent density is defined as the total weight of the floor layer / (the absolute dense volume of the components of the floor layer + the components of the floor layer The volume of open and closed holes + the total volume of accumulated voids between the components of the floor layer), ρ _theo is the theoretical volume density of the components of the sound insulation floor layer (B), which is defined as the total weight of the floor layer/(floor layer The absolute dense volume of the body's components + the volume of open and closed holes in the floor layer's components). The sound insulation floor layer (B) needs to have a certain porosity φ, which is at least 25% in a specific example, such as at least 28%, at least 30%, at least 33%, at least 35% or at least 40%; in a specific example In examples, the porosity is at most 55%, such as at most 50%, at most 45%, or at most 40%; or the porosity is within a reasonable range of the aforementioned endpoints, such as 30% to 45%, etc. Porosity can be adjusted by material particle size, cementing material characteristics, ratio, etc. For example, without being limited by theory, aggregates with a narrow particle size distribution or a single particle size can form larger porosity when stacked, and aggregates with a wider particle size distribution may be filled with larger particle sizes by smaller particle size aggregates. The pores provided by the stacking of the aggregates reduce the overall porosity, the number of internal openings and closing pores of the cementing material and/or the aggregate itself, etc.

In a specific example, the apparent density of the sound insulation floor layer (B) is 0.7g/cm ³ or more, such as 0.8g/cm ³ or more, 0.9g/cm ³ or more, 1.0g/cm ³ or more, 1.1g /cm ³ or more, 1.2g/cm ³ or more, 1.3g/cm ³ or more, 1.4g/cm 3 or more, 1.5g/cm ³ or more, 1.6g/cm ^{3 or} more, 1.7g/cm ³ or more, 1.8g/ cm ³ or more, 1.9g/cm ^{3 or} more, 2.0g/cm ³ or more, 2.1g/cm ³ or more, 2.2g/cm 3 or more, 2.3g/cm ^{3 or} more, 2.4g/cm ³ or more, 2.5g/cm ³ or more, or 2.6g/cm ³ or more; in a specific example, the apparent density of the sound insulation floor layer (B) is 4.5g/cm ³ or less, 4.4g/cm ³ or less, 4.2g/cm ³ or less , 4.0g/cm ³ or less, 3.8g/cm ³ or less, 3.6g/cm ³ or less, 3.5g/cm 3 or less, 3.4g/cm ^{3 or} less, 3.2g/cm ³ or less, 3.0g/cm ³ or less, 2.9g/cm ³ or less, 2.8g/cm ³ or less or 2.7g/cm ³ or less; the apparent density of the sound insulation floor layer (B) is within a reasonable range consisting of any of the aforementioned endpoints, such as 0.8g/cm ³ Above and below 4.5g/ ^cm3 , above 1.2g/ ^cm3 and below 4.2g/ ^cm3 , etc.

In a specific example, the thickness of the sound insulation floor layer (B) is at least 1 cm, such as at least 1.5 cm, at least 2 cm, at least 2.5 cm, at least 3 cm, at least 3.5 cm, at least 4 cm, at least 4.5 cm, or at least 5 cm, at least 6cm, at least 7cm, at least 8cm, at least 9cm or at least 10cm. There is no specific upper limit for the thickness of the sound insulation floor layer (B). The required thickness is usually adjusted depending on the situation to meet actual needs (such as cost, particle size of the aggregate used, etc.). In a specific example, the thickness of the sound insulation floor layer (B) is at most 15 cm, or at most the aforementioned thickness value, such as at most 10 cm, at most 5 cm, etc. In a specific example, the thickness of the sound insulation floor layer (B) is a reasonable numerical range composed of the aforementioned thickness endpoint values.

Since the sound insulation floor layer (B) contains lightweight aggregates, its structural strength and properties are better than those of traditional sound insulation materials. In a specific example, no additional structural materials or plates are needed, and A surface structure is applied directly above it, such as directly laminating tiles.

Figure 1 is a photograph of a specific example of the soundproof floor layer (B) of this creation.

B. Sound insulation composite panels (C)

The sound insulation floor layer (B) of this invention can be further used in conjunction with the energy dissipation layer (A) to obtain better sound insulation effects. Therefore, the invention also provides a sound-insulating composite panel (C), which includes at least one layer of energy-dissipating layer (A) and at least one layer of sound-insulating floor layer (B).

Sound insulation floor layer (B)

The sound-insulating floor layer (B) included in the sound-insulating composite panel (C) of this invention is as mentioned above.

Energy dissipating layer (A)

The energy-dissipating layer (A) is usually composed of fiber materials as the main body, and is formed into a cloth-like breathable structure through textile or hot pressing or chemical bonding processing.

In a specific example, the material of the energy-dissipating layer (A) includes fibers, such as natural fibers or artificial fibers. Examples of natural fibers include (but are not limited to) plant fibers (e.g., composed of cellulose and lignin), wood fibers (e.g., pulp products, including wipes, etc.), animal fibers (e.g., mainly composed of protein), mineral fibers, etc. . Examples of man-made fibers include, but are not limited to, polymeric fibers. In a specific example, the energy-dissipating layer (A) is in the form of a non-woven fabric (non-woven fabric). In a specific example, the fibers are breathable fibers.

In the sound-insulating composite panel (C) of the present invention, the thickness of the sound-insulating floor layer (B) can be as mentioned above, and is particularly preferably 2 cm to 10 cm, such as about 2 cm, about 3 cm, about 4 cm, about 5 cm, about 8cm, about 9cm, or a reasonable range of values consisting of the aforementioned thickness endpoints. In the sound insulation composite panel (C), the thickness of the energy dissipation layer (A) is 0.02cm to 1.0cm, such as 0.0254cm to 0.8cm, 0.033cm to 0.75cm, 0.05cm to 0.635cm, 0.075cm to 0.5cm, 0.1cm to 0.4m, 0.15cm to 0.3cm, 0.2cm to 0.25cm, about 0.127cm, about 0.15cm, about 0.2cm, about 0.254cm, or a reasonable range consisting of the aforementioned thickness endpoint values Numeric range.

In a specific example, the sound-insulating composite panel (C) includes a plurality of sound-insulating floor layers (B) and a plurality of energy-dissipating layers (A), wherein the sound-insulating floor layer (B) and the energy-dissipating layer (A) ) is in the form of staggered stacking, that is,...energy dissipation layer (A)/sound insulation floor layer (B)/energy dissipation layer (A)/sound insulation floor layer (B-2).... In a specific example, the sound-insulating composite panel (C) includes one layer of sound-insulating floor layer (B) and two layers of energy-dissipating layers (A), where the sound-insulating floor layer (B) is located on the two layers of energy-dissipating layers. (A) between. In a specific example, the sound-insulating composite panel (C) includes two layers of sound-insulating floor layers (B) and two layers of energy-dissipating layers (A), wherein the sound-insulating floor layer (B) and the energy-dissipating layer (A) A) In the form of staggered stacking.

In a specific example, the energy-dissipating layer (A) and the sound-insulating floor layer (B) are also joined by the cementing material contained in the sound-insulating floor layer (B), so there is no need to use additional cement. In a specific example, the energy dissipation layer (A) and the sound insulation floor layer (B) are further joined by a cement. The bonding agent can be the aforementioned cementing material, white glue, tile adhesive, cement, or the floor layer can be laid directly on the energy dissipation layer (A) without using a cementing agent.

The thickness of the sound insulation composite panel (C) can be 1.2cm to 20cm, such as 2cm to 15cm, 3.5cm to 10cm, 5cm to 8cm, 5cm to 12cm, or a reasonable range of values composed of the aforementioned thickness endpoints. In a specific example, a plurality of sound-insulating composite panels (C) can be directly stacked or used in a suitable joint manner to achieve the desired sound-insulating effect.

Figures 2A to 2C are schematic diagrams of specific examples of the soundproof floor board (C) of this invention.

C. Sound insulation/sound absorption effect

You can learn the standards and indicators to evaluate or evaluate the sound insulation effect. in a specific reality In this example, the impact sound reduction index (△Lw) of the floor surface material is used for evaluation, and the index can be expressed as the difference in decibels (△dB or △dBA). In a specific example, the test comparison method uses the CNS8465-2 standard to evaluate the sound insulation effect. In a specific example, when using the sound-insulating composite board (C) of the invention as a sound-insulating material, the measured index ΔdB is greater than 17dB, such as greater than 18dB, greater than 19dB, greater than 20dB, greater than 21dB, greater than 22dB, etc.

In a specific example, the sound-insulating composite board (C) has a good sound-insulating effect on low-frequency audio (less than or equal to 500 Hz). For example, the △dB effect at low frequencies can be as high as 25 to 30dB; this is compared with traditional sound-insulating floor layers. (B) (for example, using a concrete layer with no porosity or very low porosity) provides better overall and low-frequency sound insulation effect.

In a specific example, since the sound-insulating floor layer (B) in the sound-insulating composite panel (C) has the aforementioned functions, there is no need for additional structural materials or boards when using the sound-insulating composite panel (C). The surface structure is applied directly above, for example, tiles are directly laminated. In a specific example, the sound-insulating composite panel (C) is placed or joined to the floor slab, and the surface structure is applied directly above the sound-insulating composite panel.

D. Method for preparing sound insulation floor layer (B)

The invention also provides a method for preparing the sound insulation floor layer body (B), which includes the following steps: (1) mixing aggregates including lightweight aggregates and cementing materials as appropriate; (2) drying the mixture to solidify the structure; and (3) forming the sound insulation floor layer body (B).

In a specific example, the aggregate in step (1) further includes heavy aggregate. In a specific example, step (1) is step (1-1): the aggregate includes two or more types of aggregate, and the different aggregates are mixed with the cementing material respectively; in a specific example, the method further The step consists of steps (1-2): Laying different mixtures in layers. In a specific example, the cementitious material is used in the form of a suspension.

In a specific example, the drying time of step (2) is 6 to 72 hours, such as 12 to 60 hours, 24 to 48 hours.

In a specific example, the preparation method is implemented on the floor to form the sound insulation floor layer body (B) on the floor. In a specific example, the energy dissipation layer (A) is laid on the floor, and then the preparation method is implemented on the energy dissipation layer (A) to form a sound insulation floor layer body (A) on the energy dissipation layer (A) on the floor. B). In a specific example, the energy dissipation layer (A) is laid on the floor, and then the preparation method step (1) is implemented, and then the second energy dissipation layer (A) is laid, and then the preparation method steps (1) to (3) are implemented, To form a multi-layer sound insulation floor layer (B) on the floor. In a specific example, the energy-dissipating layer (A) is a nonwoven layer.

E. Method for preparing sound insulation composite panels (C)

This creation also provides a method for preparing sound-insulating composite panels (C), which includes the following steps: (a) mixing aggregates including lightweight aggregates and cementing materials used as appropriate; (b) placing an energy-dissipating layer in the mold ( A); (c) inject the mixture of step (a) into the mold; (d) dry to solidify the structure, and (e) form the sound-insulating composite panel (C).

In a specific example, the aggregate of step (a) further comprises heavy aggregate. In a specific example, step (a) is step (a-1): the aggregate includes two or more aggregates, and the different aggregates are mixed with the cementing material respectively. In a specific example, the cementitious material is used in the form of a suspension.

In a specific example, the energy-dissipating layer (A) of step (b) is a nonwoven layer.

In a specific example, the method further comprises the step (c-1) of layering different mixtures.

In a specific example, steps (a) to (c) are repeated at least once, followed by steps (d) and (e). In a specific example, steps (a) to (d) are repeated at least once, followed by step (e).

In a specific example, the drying time of step (d) is 6 to 72 hours, such as 12 to 60 hours, 24 to 48 hours.

The creator provides the following examples to more clearly illustrate the creative concept. The examples are not intended to limit the scope of the claimed rights.

Example

Determine the amount of attenuation and evaluate the effectiveness of sound insulation

Use the floor structure (D-1)/(D-2) shown in Figure 3A (Examples 1 to 4) or Figure 3B (Example 5) to measure the attenuation volume and evaluate the sound insulation effect. The standard used for the test comparison method is CNS 8465-2 standard evaluates sound insulation effect. The experimental steps are: (1) Place the conventional sound source impact measuring device on the structure shown in Figure 3A or 3B; (2) Place the sound pickup microphone below the structure; (3) The sound source impact measuring device makes a sound by tapping it. The microphone detects the volume; (4) Calculate the frequency impact sound pressure as the reduction amount (△dB) based on the detection results.

Example 1

Using lightweight glass beads as lightweight aggregates, the sound insulation efficacy of sound insulation floor layers (B) of different thicknesses was tested. The conditions and results are shown in Table 1:

The cementing material used is latex, and the ratio of aggregate to cementing material is 3:1. The energy dissipation layer (A) is non-woven fabric with a thickness of 0.25cm.

Comparative Example 1-1 can be regarded as the sound insulation effect provided by the energy dissipation layer (A). From the results in Table 1, it can be clearly seen that the sound insulation floor layer (B) of this invention exerts excellent sound insulation effect, because dB is a logarithmic index, showing blocking The sound energy effect is increased by about several times to ten times.

Example 2

Use sound insulation floor layer (B) with different aggregate materials and porosity to evaluate the sound insulation effect. The conditions and results are shown in Table 2:

The thickness of the sound insulation floor layer (B) used is 5cm, the cementing material is latex, and the ratio of aggregate to cementing material is lightweight glass beads 3:1, ceramsite 18:1, and lightweight washed stones 30:1. The energy dissipation layer (A) is non-woven fabric with a thickness of 0.25cm.

It can be seen from the above that lightweight aggregates of different materials, particle sizes, and densities can be used in the sound insulation floor layer (B) of this invention, and have the required porosity, and all exhibit excellent sound insulation effects.

Example 3

Use lightweight glass beads as aggregates to evaluate the sound insulation effect of the sound insulation floor layer (B) prepared without cementing materials or with different cementing materials. The conditions and results are shown in Table 3-1:

*Examples 3-5 to 3-7 are trend data obtained from qualitative measurements.

The sound insulation floor layer (B) used is 5cm thick, and the energy dissipation layer (A) is non-woven fabric with a thickness of 0.25cm.

It can be seen from the above that no matter whether cementing materials are used or not, as long as the sound insulation floor layer (B) has the desired porosity, it can exhibit excellent sound attenuation effect; in addition, using appropriate cementing materials can achieve better sound attenuation effects. It is also observed that the sound insulation effect is better than that of the comparative example, especially at medium and high frequencies (for example, >1000 Hz).

The sound insulation floor layer (B) prepared using different proportions of latex as cementing material was used to evaluate the sound insulation effect. The conditions and results are shown in Table 3-2:

The energy dissipation layer (A) used is non-woven fabric with a thickness of 0.25cm.

It can be seen from the results in Table 3-2 that using different proportions of cementing materials can provide better sound insulation effects when the desired porosity is met.

Example 4

Use lightweight glass beads as lightweight aggregates and further combine them with different heavy aggregates to prepare a sound insulation floor layer (B) to evaluate the sound insulation effect. The conditions and results are shown in Table 4:

The thickness of the sound insulation floor layer (B) used is 5cm, the cementing material is latex, and the ratio of aggregate to cementing material is 3:1. The energy dissipation layer (A) is non-woven fabric with a thickness of 0.25 cm.

It can be seen from the results in Table 4 above that when using both lightweight and heavy aggregates, good sound insulation effects can be achieved, and the overall sound insulation performance may even be improved. It has also been observed that in the presence of heavy aggregates, there is a better sound insulation effect on low-frequency (<500Hz) audio.

Example 5

Use lightweight glass beads as aggregates, and evaluate the sound insulation effect with the thickness of different energy dissipation layers (A) and the thickness and structure of the sound insulation floor layer (B). The conditions and results are shown in Table 5:

The cementing material used is latex, and the ratio of aggregate to cementing material is 3:1.

It can be seen from Table 5 above that using different types of fiber energy-dissipating layers (A) can achieve good sound insulation effects. In addition, when the total thickness is the same, when using a multi-layer structure, there are even It is possible to significantly improve the overall sound insulation performance.

Example 6

The sound insulation function of the sound insulation floor slab (D') of the known technology and the floor slab (D) containing the sound insulation floor layer (B) of the present invention are tested and compared. The schematic diagram of the test sample is shown in Figure 4A, and the test results are shown in Figure 4B. shown.

The sound attenuation volume (ΔdB) achieved by the soundproof floor panel (D') of the known technology is about 21, while the floor panel (D) sample of this invention is about 29, which has significantly improved sound insulation performance. In addition, due to the characteristics of the sound insulation floor layer (B), the tile adhesive (AD) and tiles (T) can be directly applied without using a base layer (CM) as in the known technology, which reduces the cost and/or Or it is more advantageous in terms of construction methods.

It should be obvious to those familiar with this technology that various modifications and changes can be made to the content of this creation without departing from the scope or spirit of this creation. In view of the above, this invention is intended to cover modifications and variations of this invention, provided that such modifications and variations fall within the scope of the following patent applications and their equivalents.

(A): Energy dissipation layer/energy dissipation layer body

(B): Sound insulation floor layer

(C): Sound insulation composite panels

Claims (11)

A sound-insulating composite panel (C), which includes at least one layer of energy-dissipating layer (A) and at least one layer of sound-insulating floor layer (B), wherein: the sound-insulating floor layer (B) includes aggregate and optionally cement. Material, wherein the aggregate includes lightweight aggregate, and the sound insulation floor layer (B) has a pore structure with a porosity of at least 25%, and the porosity φ is calculated by the following formula:

Where ρ _app is the apparent density of the sound insulation floor layer (B), and ρ _theo is the theoretical density of the components of the sound insulation floor layer (B). For example, the sound insulation composite panel (C) of claim 1, wherein the density of the lightweight aggregate is 0.25g/cm ³ to 2.5g/cm ³ . Such as the sound insulation composite panel (C) of claim 1, wherein the aggregate further includes heavy aggregate, the density of which is 1.8 to 60 times that of the light aggregate. For example, the sound insulation composite panel (C) of claim 3, wherein the weight ratio of the lightweight aggregate to the heavy aggregate is 90:10 to 20:80. For example, the sound insulation composite board (C) of claim 1, wherein the apparent density is above 0.7g/ ^cm3 . For example, the sound insulation composite panel (C) of claim 1, wherein the cementing material is Shore A (Shore A hardness) is a material below 100A. For example, the sound-insulating composite panel (C) of claim 1, wherein the weight ratio of the aggregate to the cementing material is 0.8:1 to 9:1. For example, the sound-insulating composite panel (C) of claim 1, wherein the energy-dissipating layer (A) is a fiber material. For example, the sound insulation composite board (C) of claim 1, wherein the thickness of the sound insulation floor layer (B) is 1.5cm to 15cm. For example, the sound-insulating composite panel (C) of claim 1, wherein the thickness of the energy-dissipating layer (A) is 0.12cm to 1.0cm. For example, the sound-insulating composite panel (C) of claim 1 includes multiple layers of the sound-insulating floor layer (B) and multiple layers of the energy-dissipating layer (A), wherein the sound-insulating floor layer (B) and the energy-dissipating layer (A) The energy layer body (A) is in a staggered stacked form.