Polycarbon damping vibration attenuation sound insulation material and preparation method thereof
By using a reasonable ratio and preparation process, polycarbonate damping vibration reduction and sound insulation material was prepared, which solved the problem that existing materials need to be stacked or have a large thickness, and achieved the effects of high-efficiency sound insulation and lightweight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-03-31
AI Technical Summary
Existing foam materials require multiple layers or large thicknesses to achieve ideal sound insulation, which takes up space and has limited effectiveness.
Polycarbonate damping and sound insulation material is prepared by using a specific ratio of PVC resin powder, plasticizer, calcium carbonate powder, foaming agent, flame retardant, zinc oxide, porous ceramic powder and polycarbonate, etc., through high-speed stirring and foaming process, forming a multi-level microporous structure to improve sound insulation performance.
The material has high strength and toughness, is easy to process, and has stable foaming properties, which significantly improves the absorption and blocking effect of mid-to-high frequency sound waves, while maintaining the material's lightweight nature.
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Abstract
Description
Technical Field
[0001] This invention relates to the field of polymer materials technology, and in particular to a polycarbonate damping vibration reduction and sound insulation material and its preparation method. Background Technology
[0002] Damping vibration reduction and sound insulation felt is a high-performance acoustic material, mainly used in spaces with high acoustic requirements, such as residential buildings, hotels, recording studios, transportation vehicles such as ships and automobiles, and mechanical equipment.
[0003] Foamed materials (such as polyurethane foam, polyethylene foam, and glass wool foam) are a type of acoustic material characterized by a porous structure. Their noise reduction function is primarily achieved by absorbing sound wave energy and assisting in blocking sound propagation, with particularly significant noise reduction effects on mid-to-high frequency airborne sound. When sound waves enter the pores of the foamed material, the sound wave energy is dissipated within the pores, thus achieving noise reduction. Currently, achieving ideal sound insulation often requires layering multiple materials or using a large thickness of sound insulation material, which occupies a significant amount of space. Summary of the Invention
[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a polycarbonate damping vibration reduction and sound insulation material and its preparation method, aiming to improve the performance of the sound insulation material.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: The first aspect of this invention provides a polycarbonate damping vibration reduction and sound insulation material, the raw materials for which, by mass parts, are prepared, comprising: 100 parts of PVC resin powder, 78-82 parts of plasticizer, 28-32 parts of calcium carbonate powder, 5-6 parts of foaming agent, 1-3 parts of flame retardant, 2-3 parts of zinc oxide, 2-3 parts of heat stabilizer, 26-30 parts of porous ceramic powder, and 10-12 parts of polycarbonate; wherein the PVC resin powder comprises PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950-1050; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 to the PVC resin powder with a degree of polymerization of 950-1050 is 1:1.
[0006] The polycarbonate damping and sound insulation material, wherein the plasticizer includes DOTP and cyclohexane plasticizer.
[0007] The polycarbonate damping and sound insulation material, wherein the mass ratio of DOTP to cyclohexane plasticizer is 1:3.
[0008] The polycarbonate damping and sound insulation material, wherein the calcium carbonate powder has a mesh size of 250 mesh.
[0009] The polycarbonate damping and sound insulation material, wherein the foaming agent is azodicarbonamide.
[0010] The polycarbonate damping and sound insulation material, wherein the flame retardant is a boron-based flame retardant; and the heat stabilizer is zinc isooctanoate or potassium isooctanoate.
[0011] The polycarbonate damping vibration reduction and sound insulation material, wherein the porous ceramic powder has a particle size of 30-80 micrometers.
[0012] A second aspect of the present invention provides a method for preparing a polycarbonate damping vibration reduction and sound insulation material, which is used to prepare the polycarbonate damping vibration reduction and sound insulation material as described above, comprising the following steps: S01. Prepare PVC resin powder, calcium carbonate powder, foaming agent, flame retardant, zinc oxide, porous ceramic powder, polycarbonate, and glass wool chopped fibers according to the formula, and mix them evenly in a high-speed mixer to obtain the first mixture. S02. Take the plasticizer and heat stabilizer according to the formula, mix them well, and slowly add the first mixture while stirring. Stir well to obtain the second mixture. S03. The second mixture is coated onto the base fabric, smoothed, and then foamed in a foaming furnace to obtain the polycarbonate damping vibration reduction and sound insulation material.
[0013] The method for preparing the polycarbonate damping vibration reduction and sound insulation material, wherein in S02, the furnace temperature of each zone in the foaming furnace is: the temperature of the first zone is 160-200℃, the temperature of the second zone is 190-210℃, the temperature of the third zone is 200-220℃, and the temperature of the fourth zone is 160-200℃.
[0014] Beneficial Effects: This invention provides a polycarbonate damping vibration reduction and sound insulation material. By rationally controlling the ratio of high-polymerization-degree PVC resin powder to low-polymerization-degree PVC resin powder, the material exhibits high strength and high toughness, while also possessing the advantages of easy processing and stable foaming. Furthermore, this invention utilizes the synergistic effect of zinc oxide and a heat stabilizer to promote appropriate cross-linking of PVC molecular chains, thereby enhancing the strength and elasticity of the PVC melt. The polycarbonate damping vibration reduction and sound insulation material obtained by this invention also achieves a multi-level microporous structure through the formation of PVC and porous ceramic powder, resulting in better sound absorption and blocking effects. Detailed Implementation
[0015] This invention provides a polycarbonate damping vibration reduction and sound insulation material and its preparation method. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the following embodiments are provided to further illustrate the invention in detail. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.
[0016] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0017] The first aspect of this invention provides a polycarbonate damping vibration reduction and sound insulation material, the raw materials for which, by mass parts, are prepared, comprising: 100 parts of PVC resin powder, 78-82 parts of plasticizer, 28-32 parts of calcium carbonate powder, 5-6 parts of foaming agent, 1-3 parts of flame retardant, 2-3 parts of zinc oxide, 2-3 parts of heat stabilizer, 26-30 parts of porous ceramic powder, 10-12 parts of polycarbonate, and 16-20 parts of chopped glass wool fibers; wherein the PVC resin powder comprises PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950-1050; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 to the PVC resin powder with a degree of polymerization of 950-1050 is 1:1.
[0018] Among the above components, PVC resin powder with a degree of polymerization of 1500 has longer PVC molecular chains, tighter intermolecular entanglement, and higher melt strength. When the gases from the decomposition of the foaming agent need to form a large number of tiny cells in the melt, the melt can avoid cell merging and collapse due to the inability to withstand the extrusion pressure of the gases. The high melt strength of the melt can act like an elastic net, firmly wrapping each tiny cell, preventing cell fusion or rupture, and ultimately forming a foam with fine cells and a dense structure. On the other hand, PVC resin powder with a degree of polymerization of 950-1050 has shorter molecular chains and less intermolecular entanglement. After the addition of plasticizers, foaming agents, and other additives, it is easier to be heated and melted, which can improve melt fluidity and processing performance. The mass ratio of PVC resin powder with a degree of polymerization of 1500 to that with a degree of polymerization of 950-1050 should not be too high or too low. If the mass ratio is too high, the processing performance will deteriorate and it will be difficult for cells to form; if the mass ratio is too high, the cells will be too large, the foam will not be dense enough, and the sound insulation effect will be affected. In the PVC foaming system, zinc oxide can play a role in thermal stabilization and cross-linking assistance, promoting the appropriate cross-linking of PVC molecular chains, improving melt strength, and supporting the stable growth of internal fine cells. At the same time, zinc oxide can also improve the compatibility between PVC and calcium carbonate powder, reducing the weakening effect of fillers on the strength of the foam. Porous ceramic powder has internal micropores (pore size 0.1-5 micrometers) at the nanometer to micrometer scale, which, combined with the open three-dimensional network of macropores (pore size tens to hundreds of micrometers) of the sponge itself, forms a multi-level porous system after mixing, which can specifically absorb sound waves of different frequencies. Polycarbonate, through its synergistic effect with the sponge matrix, optimizes the sound absorption mechanism through structural reinforcement, damping dissipation, and impedance adjustment, thus compensating for the performance shortcomings of traditional sponges. The presence of polycarbonate can fine-tune the pore size distribution of the sponge, transforming what were originally simple large pores into more complex composite channels. This retains the sponge's ability to absorb high-frequency sound waves while increasing the residence time of mid- and low-frequency sound waves through the gaps between particles. The sound absorption of sponges mainly relies on air friction dissipation, a mechanism primarily targeting high-frequency sound waves, while its absorption of mid- and low-frequency sound waves is relatively weak. The high damping properties of polycarbonate can specifically compensate for this deficiency. The polycarbonate fibers are randomly distributed within the sponge, forming numerous additional reflective surfaces that alter the direction of sound wave propagation. When sound waves encounter polycarbonate, they change from straight-line propagation to multi-angle scattering, causing the sound waves to bounce multiple times within the sponge. The scattered sound waves re-enter the sponge pores, repeating the air friction dissipation process, while the damping properties of polycarbonate further dissipate energy, significantly improving the overall sound absorption efficiency. When glass wool chopped fibers are mixed with PVC, they can form a fiber web inside the sponge. The frictional dissipation of sound waves with the fibers enhances the absorption of mid-to-low frequencies. However, the glass wool chopped fibers should not be too long, otherwise they will easily clump together and affect the foaming of the sponge, thus affecting the uniformity of the sponge.
[0019] Preferably, the diameter of the chopped glass wool fibers is 2-5 micrometers and the length is 2-5 millimeters. The diameter and length of the chopped glass wool fibers cannot be too large, otherwise they will damage the foam cells during the foaming process and hinder the formation of foam cells.
[0020] Preferably, the plasticizer includes DOTP and cyclohexane plasticizers. The benzene ring in the DOTP molecule matches the polarity of the PVC chain segments, while the cyclic structure of cyclohexane can form a stabilizing effect with the PVC molecular chain, making it less likely to migrate from the interior of the foam to the surface during long-term use. Specifically, the rigid benzene ring structure of DOTP enhances molecular stability, increasing the strength and flexibility of the foam. The more flexible cyclic structure of cyclohexane plasticizers improves the feel of the foam.
[0021] Preferably, the mass ratio of DOTP to cyclohexane plasticizer is 1:3.
[0022] Preferably, the calcium carbonate powder has a mesh size of 250.
[0023] Preferably, the foaming agent is azodicarbonamide. Azodicarbonamide produces gas molecules with small diameters and slow diffusion rates, resulting in a long residence time in the substrate melt. The gas does not easily escape from the melt quickly but instead expands slowly within the melt, gradually pushing it apart to form bubbles, allowing for stable bubble growth.
[0024] Preferably, the flame retardant is a boron-based flame retardant. Boron-based flame retardants have the advantages of low toxicity and environmental friendliness, high flame retardant efficiency, and good compatibility with PVC.
[0025] Preferably, the heat stabilizer is zinc isooctanoate or potassium isooctanoate. The heat stabilizer can react with HCl released during PVC degradation, preventing HCl from catalyzing further degradation of PVC.
[0026] Preferably, the porous ceramic powder has a particle size of 30-80 micrometers. Specifically, the porous ceramic powder is modified with a silane coupling agent to improve its compatibility with PVC. The amount of silane coupling agent used is 3% of the mass of the porous ceramic powder.
[0027] A second aspect of the present invention provides a method for preparing a polycarbonate damping vibration reduction and sound insulation material, which is used to prepare the polycarbonate damping vibration reduction and sound insulation material as described above, comprising the following steps: S01. Prepare PVC resin powder, calcium carbonate powder, foaming agent, flame retardant, zinc oxide, porous ceramic powder, polycarbonate, and glass wool chopped fibers according to the formula, and mix them evenly in a high-speed mixer to obtain the first mixture. S02. Take the plasticizer and heat stabilizer according to the formula, mix them well, and slowly add the first mixture while stirring. Stir well to obtain the second mixture. S03. The second mixture is coated onto the base fabric, smoothed, and then foamed in a foaming furnace to obtain the polycarbonate damping vibration reduction and sound insulation material.
[0028] The method for preparing the polycarbonate damping vibration reduction and sound insulation material, wherein in S02, the furnace temperature of each zone in the foaming furnace is: the temperature of the first zone is 160-200℃, the temperature of the second zone is 190-210℃, the temperature of the third zone is 200-220℃, and the temperature of the fourth zone is 160-200℃.
[0029] Example 1 A polycarbonate damping vibration reduction and sound insulation material, by weight, is prepared from the following raw materials: 100 parts of PVC resin powder, 80 parts of plasticizer, 30 parts of calcium carbonate powder, 5 parts of foaming agent, 2 parts of flame retardant, 2 parts of zinc oxide, 2 parts of heat stabilizer, 26 parts of porous ceramic powder, 12 parts of polycarbonate, and 18 parts of glass wool chopped fibers. The PVC resin powder includes PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 and the PVC resin powder with a degree of polymerization of 950 is 1:1. The plasticizer is composed of DOTP and cyclohexane plasticizer in a mass ratio of 1:3; The calcium carbonate powder has a mesh size of 250. The foaming agent is azodicarbonamide; The flame retardant is a boron-based flame retardant; The heat stabilizer is zinc isooctanoate; The preparation method of the polycarbonate damping vibration reduction and sound insulation material includes the following steps: S01. Prepare PVC resin powder, calcium carbonate powder, foaming agent, flame retardant, zinc oxide, porous ceramic powder, polycarbonate, and glass wool chopped fibers according to the formula, and mix them evenly in a high-speed mixer to obtain the first mixture. S02. Take the plasticizer and heat stabilizer according to the formula, mix them well, and slowly add the first mixture while stirring. Stir well to obtain the second mixture. S03. The second mixture is coated onto the base fabric, smoothed, and then foamed in a foaming furnace to obtain the polycarbonate damping vibration reduction and sound insulation material.
[0030] The method for preparing the polycarbonate damping vibration reduction and sound insulation material, wherein in S02, the furnace temperature of each zone in the foaming furnace is: the temperature of the first zone is 160-200℃, the temperature of the second zone is 190-210℃, the temperature of the third zone is 200-220℃, and the temperature of the fourth zone is 160-200℃.
[0031] Example 2 A polycarbonate damping vibration reduction and sound insulation material differs from Example 1 in that its formulation is different. In this example, the polycarbonate damping vibration reduction and sound insulation material, by mass parts, is prepared from the following raw materials: 100 parts of PVC resin powder, 78 parts of plasticizer, 32 parts of calcium carbonate powder, 5 parts of foaming agent, 2 parts of flame retardant, 3 parts of zinc oxide, 2 parts of heat stabilizer, 26 parts of porous ceramic powder, 12 parts of polycarbonate, and 18 parts of glass wool chopped fibers. The PVC resin powder includes PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 1050; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 and the PVC resin powder with a degree of polymerization of 1050 is 1:1. The plasticizer is composed of DOTP and cyclohexane plasticizer in a mass ratio of 1:3; The calcium carbonate powder has a mesh size of 250. The foaming agent is azodicarbonamide; The flame retardant is a boron-based flame retardant; The heat stabilizer is potassium isooctanoate.
[0032] Example 3 A polycarbonate damping vibration reduction and sound insulation material differs from Example 1 in that its formulation is different. In this example, the polycarbonate damping vibration reduction and sound insulation material, by mass parts, is prepared from the following raw materials: 100 parts of PVC resin powder, 78 parts of plasticizer, 32 parts of calcium carbonate powder, 5 parts of foaming agent, 2 parts of flame retardant, 3 parts of zinc oxide, 2 parts of heat stabilizer, 26 parts of porous ceramic powder, 12 parts of polycarbonate, and 18 parts of glass wool chopped fibers. The PVC resin powder includes PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 and the PVC resin powder with a degree of polymerization of 950 is 1:1. The plasticizer is composed of DOTP and cyclohexane plasticizer in a mass ratio of 1:1; The calcium carbonate powder has a mesh size of 250. The foaming agent is azodicarbonamide; The flame retardant is a boron-based flame retardant; The heat stabilizer is potassium isooctanoate.
[0033] Comparative Example 1 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that zinc oxide is not used in this comparative example.
[0034] Comparative Example 2 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that porous ceramic powder is not used in this comparative example.
[0035] Comparative Example 3 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that the amount of porous ceramic powder used in this comparative example is 36 parts and the amount of calcium carbonate powder is 20 parts.
[0036] Comparative Example 4 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that the mass ratio of PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950-1050 in this comparative example is 2:1.
[0037] Comparative Example 5 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that, in this comparative example, chopped glass wool fibers were not used.
[0038] Comparative Example 6 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that the amount of glass wool chopped fibers used in this comparative example is 25 parts.
[0039] Comparative Example 7 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that polycarbonate is not used in this comparative example.
[0040] Comparative Example 8 A polycarbonate damping vibration reduction and sound insulation material, which differs from Example 1 in that the amount of polycarbonate used in this comparative example is 20 parts.
[0041] The properties of the polycarbonate damping vibration reduction and sound insulation materials prepared in the above embodiments and comparative examples were tested. The thickness of the polycarbonate damping vibration reduction and sound insulation materials was 3 mm.
[0042] The test items and test results are as follows:
[0043] The results above show that the polycarbonate damping vibration reduction and sound insulation materials prepared in Examples 1-3 have good noise reduction performance, and exhibit low 50% compression set, making them resistant to damage after long-term compression and ensuring stable noise reduction performance. This demonstrates that a reasonable combination of components can not only effectively improve the noise reduction performance of the material but also maintain its excellent resistance to deformation.
[0044] Comparative Example 1, without zinc oxide, showed a noise reduction performance of only 32 dB and a compression set of 16%, indicating an improvement. The core reason is that the lack of zinc oxide leads to the absence of its cross-linking catalytic and cell-stabilizing effects. In PVC systems, zinc oxide catalyzes the cross-linking reaction between resin and plasticizer, forming a denser damping network and enhancing the absorption of low-frequency vibrations. Without zinc oxide, the degree of cross-linking is insufficient, the damping network is loose, and it cannot effectively dissipate low-frequency sound wave energy, resulting in a significant decrease in noise reduction. Zinc oxide also improves the interfacial bonding between the PVC matrix and fillers (such as glass wool and porous ceramics), reducing structural slippage under pressure. Without it, the material is difficult to return to its original shape after compression, and the deformation rate doubles.
[0045] Comparative Example 2, which did not use porous ceramic powder, showed a significant decrease in noise reduction performance, while its compression set was slightly increased. The main reason is the lack of low-frequency sound wave dissipation capability in porous ceramics. Porous ceramics contain interconnected micron-sized pores, which are the core structure for absorbing low-frequency sound waves. Low-frequency sound waves can enter these pores and dissipate energy through reflection and friction. Without porous ceramics, glass wool and PVC foam alone cannot meet the low-frequency noise reduction requirements. Since porous ceramics are rigid particles, adding a small amount slightly reduces the material's elasticity; reducing the amount of porous ceramics slightly improves the material's flexibility, resulting in a slightly lower deformation rate than in Example 1.
[0046] Comparative Example 3 uses a higher amount of porous ceramic, resulting in slightly better noise reduction performance, but the compression set rate increases significantly. This is mainly because the increased amount of porous ceramic leads to more low-frequency sound-absorbing pores, thus the noise reduction is slightly higher than in Example 1, indicating a positive effect on low-frequency noise reduction. However, the high density of porous ceramic means that excessive addition can cause the rigid particles inside the material to agglomerate, disrupting the elastic network of the PVC matrix. Under pressure, the rigid particles squeeze each other and cannot recover through elastic deformation, resulting in a deformation rate exceeding 20%, rendering it impractical.
[0047] The PVC resin formulation in Comparative Example 4 was adjusted, resulting in a decrease in noise reduction performance and an increase in compression set. PVC with a degree of polymerization of 1500 exhibits good toughness but poor processability, while PVC with a degree of polymerization of 950 has good processability but weak toughness. The 1:1 ratio in Example 1 balances toughness and processability. When the high-degree-of-polymer resin in Comparative Example 4 is in excess, it leads to excessively strong PVC matrix toughness but poor flowability, resulting in uneven cell formation during foaming and affecting the sound-absorbing structure. Furthermore, it also leads to insufficient matrix rigidity, failing to effectively support the filler, and reducing both low-frequency noise reduction and elasticity.
[0048] Comparative Example 5, without chopped glass wool fibers, showed a significant decrease in noise reduction performance and a significant increase in compression set. Chopped glass wool fibers form a fiber web, which not only helps absorb low-to-mid-frequency sound waves but also enhances the stability of the material's internal structure. Their absence reduces the material's sound absorption capacity. Glass wool fibers also participate in forming an elastic skeleton, reducing matrix shrinkage under pressure; their absence weakens the material's resistance to deformation.
[0049] In Comparative Example 6, the excessive amount of chopped glass wool fibers resulted in a decrease in noise reduction performance and an increase in compression set. This is because excessive glass wool leads to damage to the cell structure and blockage of sound-absorbing pores. When there is an excess of glass wool fibers, they entangle and agglomerate during the foaming process, causing the cells to merge into larger pores or rupture, thus blocking the sound-absorbing pores and preventing effective sound absorption. Furthermore, the agglomeration of excessive fibers also makes the interface between the fibers and the PVC matrix unstable, making the fibers prone to detaching from the matrix under pressure, leading to a significant increase in deformation rate.
[0050] Comparative Example 7, without the addition of polycarbonate, showed a significant decrease in noise reduction performance, while the compression set remained unchanged. Polycarbonate is a high-damping material; blending it with PVC can significantly increase the material's "loss factor," enhancing its ability to dissipate vibrations and sound waves. Without polycarbonate (PC), the material's damping is insufficient, failing to effectively absorb low-frequency vibration energy, thus reducing noise reduction.
[0051] Comparative Example 8 used a higher amount of polycarbonate, resulting in a slight decrease in noise reduction performance compared to Example 1, while the compression set rate was significantly increased. This is because excessive polycarbonate leads to excessive rigidity and decreased elasticity. Although polycarbonate can improve overall damping performance, excessive polycarbonate increases the rigidity of the PVC matrix, causing insufficient elasticity of the foam cells during foaming, and some small pores to collapse, resulting in a slight reduction in sound-absorbing porosity and a minor decrease in noise reduction. Furthermore, the high rigidity of polycarbonate leads to a decrease in the overall flexibility of the material after excessive addition, making it difficult to recover through elastic deformation under pressure, resulting in a significant increase in the deformation rate.
[0052] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.
Claims
1. A polycarbonate damping vibration reduction and sound insulation material, characterized in that, The raw materials for its preparation, by weight, include: 100 parts of PVC resin powder, 78-82 parts of plasticizer, 28-32 parts of calcium carbonate powder, 5-6 parts of foaming agent, 1-3 parts of flame retardant, 2-3 parts of zinc oxide, 2-3 parts of heat stabilizer, 26-30 parts of porous ceramic powder, 10-12 parts of polycarbonate, and 16-20 parts of glass wool chopped fibers. The PVC resin powder includes PVC resin powder with a degree of polymerization of 1500 and PVC resin powder with a degree of polymerization of 950 to 1050; the mass ratio of the PVC resin powder with a degree of polymerization of 1500 to the PVC resin powder with a degree of polymerization of 950 to 1050 is 1:
1.
2. The polycarbonate damping vibration reduction and sound insulation material according to claim 1, characterized in that, The plasticizers include DOTP and cyclohexane plasticizers.
3. The polycarbonate damping vibration reduction and sound insulation material according to claim 2, characterized in that, The mass ratio of DOTP to cyclohexane plasticizer is 1:
3.
4. The polycarbonate damping vibration reduction and sound insulation material according to claim 1, characterized in that, The calcium carbonate powder has a mesh size of 250.
5. The polycarbonate damping vibration reduction and sound insulation material according to claim 1, characterized in that, The foaming agent is azodicarbonamide.
6. The polycarbonate damping vibration reduction and sound insulation material according to claim 1, characterized in that, The flame retardant is a boron-based flame retardant; the heat stabilizer is zinc isooctanoate or potassium isooctanoate.
7. The polycarbonate damping vibration reduction and sound insulation material according to claim 1, characterized in that, The porous ceramic powder has a particle size of 30–80 micrometers.
8. A method for preparing a polycarbonate damping vibration reduction and sound insulation material, characterized in that, The method for preparing the polycarbonate damping vibration reduction and sound insulation material as described in any one of claims 1-7 comprises the following steps: S01. Prepare PVC resin powder, calcium carbonate powder, foaming agent, flame retardant, zinc oxide, porous ceramic powder, polycarbonate, and glass wool chopped fibers according to the formula, and mix them evenly in a high-speed mixer to obtain the first mixture. S02. Take the plasticizer and heat stabilizer according to the formula, mix them well, and slowly add the first mixture while stirring. Stir well to obtain the second mixture. S03. The second mixture is coated onto the base fabric, smoothed, and then foamed in a foaming furnace to obtain the polycarbonate damping vibration reduction and sound insulation material.
9. The method for preparing polycarbonate damping vibration reduction and sound insulation material according to claim 8, characterized in that, In S02, the furnace temperatures of each zone in the foaming furnace are as follows: Zone 1 temperature is 160-200℃, Zone 2 temperature is 190-210℃, Zone 3 temperature is 200-220℃, and Zone 4 temperature is 160-200℃.