Water-based damping glue LVT mute floor and manufacturing method

Abstract

The invention discloses a water-based damping glue LVT silent floor and a manufacturing method, and relates to the technical field of floors, the water-based damping glue LVT silent floor comprises a middle material layer, a bottom material layer and foamed cotton, and the middle material layer and the bottom material layer both contain damping materials; water-based damping glue for adhering the backing material layer and the foam cotton is coated between the backing material layer and the foam cotton; by adding the water-based damping glue, the water-based damping glue absorbs vibration through the viscoelastic characteristic of the water-based damping glue, interlayer transmission is optimized through bonding and buffering, the water-based damping glue and other materials cooperate to broaden the mute range, and finally the efficient and lasting mute effect is achieved. The multi-layer damping synergistic effect remarkably improves the silencing effect of the LVT floor, and especially the blocking capacity of the LVT floor on low and medium frequency impact sound.

Description

Technical Field

[0001] This invention relates to the field of flooring technology, specifically to a water-based damping adhesive LVT soundproof floor and its manufacturing method. Background Technology

[0002] Traditional LVT flooring typically has a simple structure, generally consisting of a wear layer, a colored film layer, a base layer, and a simple moisture-proof layer. Its base layer often uses a single high-density fiberboard or ordinary stone-plastic composite material, lacking effective damping and reinforcement. This structure makes traditional LVT flooring prone to significant vibration and noise when subjected to external impacts, especially during foot traffic or when objects are dropped, resulting in noticeable noise transmission and making it unsuitable for environments requiring high noise levels. Summary of the Invention

[0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a water-based damping adhesive LVT silent floor and a manufacturing method thereof, which solves the problem of insufficient sound insulation performance of traditional LVT floor.

[0004] Technical solution

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] A water-based damping adhesive LVT silent floor includes a middle layer, a base layer, and foam. Both the middle layer and the base layer contain damping material. A water-based damping adhesive for bonding the base layer and the foam is applied between the base layer and the foam.

[0007] By adding a water-based damping adhesive with excellent viscoelastic properties, this adhesive not only effectively absorbs and dissipates vibrational energy due to its unique molecular structure, but also optimizes stress transmission between structural layers through its strong bonding performance. The synergistic effect of this adhesive and the buffer layer forms a multi-layered damping system, significantly broadening the material's silent frequency range, particularly demonstrating excellent sound insulation performance against mid-to-low frequency impacts. Simultaneously, the carefully designed damping material network within the middle and bottom layers dissipates energy by converting mechanical vibration energy into heat energy. When the floor is subjected to external impact, these damping materials, with their special viscoelastic properties, can respond rapidly and form slippage and recombination of molecular chains, effectively suppressing the propagation intensity of vibration waves. This multi-level, multi-mechanism synergistic damping effect not only significantly improves the immediate sound insulation effect of LVT flooring, but also ensures long-term stability of sound insulation performance through material structural optimization.

[0008] Furthermore, the components of the intermediate layer, by mass parts, include: 100 parts polyvinyl chloride, 30-50 parts plasticizer, 550-650 parts stone powder, 15-60 parts damping material, 2-3 parts stabilizer, 10-20 parts short fiber, and 1 part carbon black.

[0009] The components of the base layer, by mass parts, include: 100 parts polyvinyl chloride, 30-50 parts plasticizer, 300-450 parts stone powder, 30-60 parts damping material, 2-3 parts stabilizer, 10-20 parts regulator, and 1 part carbon black.

[0010] Furthermore, the components of the water-based damping adhesive, by mass parts, include: 200 parts water, 1-3 parts preservative, 0.3-1.2 parts defoamer, 0.3-1.2 parts wetting agent, 80-150 parts slow-drying agent, 2-5 parts cellulose, 1-4 parts multifunctional additive, 10-30 parts hollow glass microspheres, 5-20 parts rubber powder, and 260-350 parts VAE emulsion.

[0011] Furthermore, the damping material is one or more of EPDM, CR, NBR, EVA, and TPU.

[0012] Furthermore, the defoamer is one or more of BYK-024, BYK-028, BYK-034, and BYK-019.

[0013] Further, the wetting agent is one or more of BYK-346, BYK-349, BYK-345 and BYK-381.

[0014] Furthermore, the cellulose is one or more of CMC-Na, HPMC, HPC, and HEC.

[0015] Furthermore, the multifunctional adjuvant is one or more of ASE, BYK-420, RM-8W, and HASE.

[0016] Furthermore, the foam is any one of IXPE, IXPP, EVA foam, TPU foam, PVC foam, and CR foam.

[0017] A method for manufacturing an LVT (Low Temperature Transmission) silent floor using water-based damping adhesive is also disclosed, specifically including the preparation of damping intermediate and base materials; the preparation of water-based damping adhesive; and the lamination of each substrate layer into an LVT floor, wherein the coating amount of the water-based damping adhesive is 80-120 g / m². 2 .

[0018] Beneficial effects

[0019] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0020] The technical solution provided by this invention adds water-based damping adhesive, which absorbs vibrations through its viscoelastic properties, optimizes interlayer transmission through bonding and buffering, and further expands the noise reduction range in conjunction with other materials, ultimately achieving a highly efficient and durable noise reduction effect. This multi-layer damping synergy significantly improves the noise reduction effect of LVT flooring, especially its ability to block low- and mid-frequency impact sounds.

[0021] Meanwhile, the damping materials within the middle and bottom layers can achieve noise reduction through energy conversion. When the floor is subjected to external impact, the viscoelastic properties of the damping material will suppress the intensity of the resulting vibration. Attached Figure Description

[0022] No attached image. Detailed Implementation

[0023] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments.

[0024] Example 1

[0025] A water-based damping adhesive LVT soundproof floor has the following structure from top to bottom: a wear-resistant layer, a colored film layer, a middle layer, a base layer, and foam. The middle and base layers contain oil-based damping materials. The middle layer containing damping materials, the base layer containing damping materials, and the foam are the core substrates that give the floor its soundproofing effect.

[0026] The damping materials contained in both the middle and bottom layers can achieve noise reduction through energy conversion. When the floor is subjected to external impact, the viscoelastic properties of the damping material will suppress the vibration generated by the middle and bottom layers, thereby reducing the vibration intensity and weakening the transmission of sound, thus achieving the purpose of quietness.

[0027] Meanwhile, water-based damping adhesive is used between the base material and the foam. This adhesive absorbs vibrations through its viscoelastic properties and optimizes interlayer transmission through bonding and buffering. It also works synergistically with other materials to broaden the noise reduction range, ultimately achieving a highly efficient and durable noise reduction effect. This is the key reason why it has become a core material for soundproof floors and damping vibration reduction structures.

[0028] The components of the intermediate layer containing damping material, by mass parts, include: 100 parts polyvinyl chloride, 30-50 parts plasticizer, 550-650 parts stone powder, 15-60 parts damping material, 2-3 parts stabilizer, 10-20 parts short fiber, and 1 part carbon black.

[0029] The components of the base layer containing damping material, by mass parts, include: 100 parts polyvinyl chloride, 30-50 parts plasticizer, 300-450 parts stone powder, 30-60 parts damping material, 2-3 parts stabilizer, 10-20 parts modifier, and 1 part carbon black.

[0030] Preferably, the damping material is one or more of EPDM, CR, NBR, EVA, and TPU, with TPU being the most preferred. TPU has good compatibility with PVC and good processability.

[0031] The components of the water-based damping adhesive, by weight, include: 200 parts water, 1-3 parts preservative, 0.3-1.2 parts defoamer, 0.3-1.2 parts wetting agent, 80-150 parts slow-drying agent, 2-5 parts cellulose, 1-4 parts multifunctional additive, 10-30 parts hollow glass microspheres, 5-20 parts rubber powder, and 260-350 parts VAE emulsion.

[0032] Preferably, the defoamer is one or more of BYK-024, BYK-028, BYK-034, and BYK-019, with BYK-024 being the most preferred. BYK-024 exhibits better compatibility and stability in aqueous solutions.

[0033] Preferably, the wetting agent is one or more of BYK-346, BYK-349, BYK-345, and BYK-381, with BYK-346 being the most preferred. BYK-346 has higher wetting efficiency, a wider wetting range, and is cost-effective.

[0034] The slow-drying agent is propylene glycol.

[0035] Preferably, the cellulose is one or more of CMC-Na, HPMC, HPC, and HEC, and cellulose is used to encapsulate water, with HEC being the most preferred. HEC is the first choice for damping adhesives due to its water resistance, salt resistance, and thickening stability.

[0036] The multifunctional additive is one or more of ASE, BYK-420, RM-8W, and HASE, with ASE or HASE being the most preferred. This is because ASE or HASE has excellent compatibility with emulsions and fillers.

[0037] The base material and the foam are laid by brushing adhesive, preferably with foam material with a polar substrate, to ensure that the water-based damping adhesive has a high peel strength with the base material.

[0038] Preferably, the foam is one of IXPE, IXPP, EVA foam, TPU foam, PVC foam and CR foam, with CR foam being the most preferred.

[0039] A method for manufacturing a water-based damping adhesive LVT sound-absorbing floor, the specific steps of which are as follows:

[0040] Preparation of damping intermediate and base materials;

[0041] The raw materials used to make the middle and bottom layers are weighed according to their component ratios, and then mixed in a mixer. After being mixed evenly, they are fed into an internal mixer for internal mixing and then calendered to produce semi-finished products for later use. The calendering temperature is 170-180℃.

[0042] Preparation of water-based damping adhesive;

[0043] 1. Weigh the components according to the proportions, and add 200 parts water, 1-3 parts preservative, 0.3-1.2 parts defoamer, 0.3-1.2 parts wetting agent and 80-150 parts slow drying agent into the disperser in sequence, while keeping the disperser running at low speed;

[0044] 2. Add 2-5 parts cellulose and hold for 2-3 minutes;

[0045] 3. Add 1-4 parts of the multi-functional additive and stir for 1-2 minutes until well mixed;

[0046] 4. While keeping the disperser at a low speed, slowly add 10-30 parts of hollow glass microspheres and 5-20 parts of rubber powder;

[0047] 5. Gradually increase the rotation speed and disperse for 20 minutes. Then add 260-350 parts of VAE emulsion and stir for 10 minutes to obtain water-based damping adhesive.

[0048] The various substrate layers are bonded together to form an LVT floor.

[0049] 1. The wear-resistant layer, colored film layer, intermediate layer containing damping material, and base layer containing damping material are sequentially laid from top to bottom in a hot and cold integrated press to obtain a semi-finished flooring product. The pressing time is 60-90 minutes, the pressing temperature is 130-160℃, and the pressure is 5-15MPa.

[0050] The wear-resistant layer and the color film layer can be manufactured using conventional methods available on the market. The wear-resistant layer and the color film layer can be coated onto the intermediate material layer and then cured.

[0051] 2. The obtained semi-finished board material is cured, and then coated with a UV coating using a coating machine. The coating consists of a primer and a topcoat. After coating, a tempering heat treatment is required. The primer coating amount is 14-16 g / m². 2 The curing energy is 300-500 mJ / cm. 2 Topcoat application rate is 16-18 g / m² 2 The curing energy is 1000-1500 mJ / cm. 2 The tempering outlet temperature is around 80℃, and the speed is 15-20m / min.

[0052] 3. Apply water-based damping adhesive to the base material and then bond it to the CR foam. The application amount of water-based damping adhesive is 80-120 g / m². 2 After bonding, allow the adhesive to cure for 2-6 hours.

[0053] 4. After bonding, the semi-finished product is divided into pieces and trimmed to obtain the finished product.

[0054] A comparative experiment was conducted between LVT sound-absorbing flooring with water-based damping adhesive and ordinary LVT sound-absorbing flooring:

[0055] Experimental Example 1:

[0056] The middle layer consists of 100 parts polyvinyl chloride, 40 parts plasticizer, 600 parts stone powder, 35 parts TPU, 2.5 parts stabilizer, 15 parts short fiber, and 1 part carbon black.

[0057] The base layer consists of 100 parts polyvinyl chloride, 40 parts plasticizer, 375 parts stone powder, 45 parts TPU, 2.5 parts stabilizer, 15 parts regulator, and 1 part carbon black.

[0058] The water-based damping adhesive comprises 200 parts water, 2 parts preservative, 0.8 parts BYK-024, 0.8 parts BYK-346, 115 parts propylene glycol slow-drying agent, 3.5 parts HEC, 2.5 parts ASE, 20 parts hollow glass microspheres, 18 parts rubber powder, and 310 parts VAE emulsion.

[0059] The foam is CR foam.

[0060] The above materials are prepared according to the process in the manufacturing method to obtain the LVT silent floor with water-based damping adhesive.

[0061] Comparative Example 1: Ordinary LVT silent floor.

[0062] Noise level test: Tested according to ISO 10140-3:2010 / Amd.1:2015 standard, and calculated according to ISO 717-2 standard.

[0063] Ordinary LVT silent floor LVT soundproof flooring with damping adhesive Mute effect 16-17dB 19-20dB

[0064] As can be seen from the table above, the sound-dampening effect of LVT flooring with water-based damping adhesive is significantly better than that of ordinary LVT flooring.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A water-based damping glue LVT silent floor, characterized in that, The middle layer and the bottom layer contain damping material, and the bottom layer and the foamed cotton are coated with water-based damping glue for bonding the bottom layer and the foamed cotton.

2. The water-based damping glue LVT silent floor according to claim 1, wherein, The components of the middle layer include 100 parts of polyvinyl chloride, 30-50 parts of plasticizer, 550-650 parts of stone powder, 15-60 parts of damping material, 2-3 parts of stabilizer, 10-20 parts of short fiber, and 1 part of carbon black. The components of the bottom layer include 100 parts of polyvinyl chloride, 30-50 parts of plasticizer, 300-450 parts of stone powder, 30-60 parts of damping material, 2-3 parts of stabilizer, 10-20 parts of adjusting agent, and 1 part of carbon black.

3. The water-based damping glue LVT silent floor according to claim 1, wherein, The components of the water-based damping glue include 200 parts of water, 1-3 parts of preservative, 0.3-1.2 parts of defoaming agent, 0.3-1.2 parts of wetting agent, 80-150 parts of slow-drying agent, 2-5 parts of cellulose, 1-4 parts of multifunctional additive, 10-30 parts of hollow glass microbeads, 5-20 parts of rubber powder, and 260-350 parts of VAE emulsion.

4. The water-based damping glue LVT silent floor according to claim 2, wherein, The damping material is one or more of EPDM, CR, NBR, EVA, and TPU.

5. The water-based damping glue LVT silent floor according to claim 3, characterized in that, The defoaming agent is one or more of BYK-024, BYK-028, BYK-034, and BYK-019.

6. The water-based damping glue LVT silent floor according to claim 3, wherein, The wetting agent is one or more of BYK-346, BYK-349, BYK-345, and BYK-381.

7. The water-based damping glue LVT silent floor according to claim 3, wherein, The cellulose is one or more of CMC-Na, HPMC, HPC, and HEC.

8. The water-based damping glue LVT silent floor according to claim 3, wherein, The multifunctional additive is one or more of ASE, BYK-420, RM-8W, and HASE.

9. The water-based damping glue LVT silent floor according to claim 1, wherein, The foamed cotton is any one of IXPE, IXPP, EVA foamed cotton, TPU foamed cotton, PVC foamed cotton, and CR foamed cotton.

10. A method of manufacturing the water-based damping glue LVT silent floor as claimed in any of claims 1-9, characterized in that, Preparation of damping middle material and bottom material; preparation of water-based damping glue; laminating each layer of base material into LVT floor, wherein the coating amount of the water-based damping glue is 80-120 g / m 2 .