High-toughness nano rubber and plastic heat preservation and sound insulation board

Abstract

The invention relates to the technical field of construction and building materials, in particular to a high-toughness nano rubber and plastic heat preservation and sound insulation board. The heat preservation and sound insulation board is prepared through the following steps that 12-25 parts by mass of nano calcium carbonate, 1-3 parts by mass of carbon nanotubes and 1.5-2.5 parts by mass of a titanate coupling agent are mixed, and a pretreated nano material is obtained; s2, mixing the pretreated nano material obtained in the step S1 with 90-100 parts by mass of PVC resin, 3-5 parts by mass of a heat stabilizer, 10-20 parts by mass of a solid flame retardant and 0.5-1 part by mass of an antioxidant to obtain a premixed dry material; the materials are subjected to internal mixing, then discharged to a double-roller open mill for open milling and cooled, and a rubber material is obtained; and putting the rubber material into a mold, and carrying out primary pressurizing and heating, pressure relief, secondary heating and shaping, cooling and demolding, so as to obtain the high-toughness nano rubber and plastic heat-preservation and sound-insulation board. The high-toughness nano rubber and plastic heat-preservation and sound-insulation board provided by the invention has high toughness and good heat-preservation and sound-insulation effects at the same time.

Description

Technical Field

[0001] This application relates to the field of building materials technology, specifically to a high-toughness nano-rubber-plastic thermal insulation and soundproofing board. Background Technology

[0002] Rubber and plastic insulation and sound insulation materials are widely used for insulation and sound insulation in building envelopes, industrial pipelines, and transportation vehicles due to their advantages such as light weight, flexibility, low thermal conductivity, moisture resistance, and corrosion resistance. Traditional rubber and plastic insulation and sound insulation boards typically use a blend of rubber and plastic as the matrix, and are made into a foam material with a closed-cell structure through a chemical foaming process. Their thermal insulation performance mainly relies on the low thermal conductivity of the air trapped in the cells, while their sound insulation performance depends on the material's dissipation of sound wave energy through damped vibration and frictional heat generation. Traditional product designs focus on thermal insulation performance, with limited optimization of sound insulation performance. Their cell structure is often relatively simple, resulting in poor sound insulation effects. Furthermore, existing technologies struggle to simultaneously achieve high toughness while maintaining excellent thermal and sound insulation performance. Therefore, developing a new type of rubber and plastic composite material that can fundamentally coordinate and improve toughness, thermal insulation, and sound insulation performance, with a controllable process, has become a key problem urgently needing to be solved in this technological field. Summary of the Invention

[0003] To address the aforementioned issues, the purpose of this application is to provide a high-toughness nano-rubber-plastic thermal insulation and soundproofing board that possesses both high toughness and excellent thermal insulation and soundproofing effects.

[0004] To achieve the above objectives, this application provides a high-toughness nano-rubber-plastic thermal insulation and soundproofing board, which is prepared by the following steps: S1. By weight, mix 12-25 parts of nano-calcium carbonate, 1-3 parts of carbon nanotubes and 1.5-2.5 parts of titanate coupling agent to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1 are mixed with 90-100 parts of PVC resin, 3-5 parts of heat stabilizer, 10-20 parts of solid flame retardant, and 0.5-1 parts of antioxidant to obtain a premixed dry material. S3. By weight, add 30-40 parts of EPDM rubber, 20-30 parts of dioctyl phthalate, and 5-10 parts of chlorinated polyethylene to a mixer for a first mixing. Then add the premixed dry material obtained in step S2 for a second mixing. Next, add 5-8 parts of AC foaming agent, 2-4 parts of foaming activator, and 1-2 parts of lubricant for a third mixing. After that, discharge the material to a two-roll mill for mixing and cooling to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold and pressurize and heat it once, then release the pressure, heat it a second time to shape it, cool it and demold it to obtain a high-toughness nano rubber and plastic thermal insulation and sound insulation board.

[0005] Furthermore, the mixing described in step S1 is performed at 80-90°C and a rotation speed of 1000-1100 rpm for 10-15 minutes.

[0006] Furthermore, the mixing described in step S2 is performed at a temperature of 100-110°C and a rotation speed of 900-1000 rpm for 8-10 minutes.

[0007] Furthermore, the first intensive mixing is carried out at 60-70℃ and a speed of 30-40 rpm for 2-3 minutes.

[0008] Furthermore, the secondary mixing is carried out at 110-120℃ and a speed of 30-40 rpm for 2-3 minutes.

[0009] Furthermore, the three-stage mixing process involves mixing at 120-125°C and a rotation speed of 30-40 rpm for 3-4 minutes.

[0010] Furthermore, the two-roll open mill operates under the following conditions: front roll temperature 100-105℃, rotation speed 20-25rpm, rear roll temperature 105-110℃, rotation speed 15-20rpm, roll gap 1.5-2.0mm, thin pass 3-5 times, triangular wrap 5-6 times, and then the roll gap is increased to 2.8-3mm for sheet output.

[0011] Furthermore, the initial pressurization heating is maintained at a pressure of 15-20 MPa and a temperature of 140-150°C for 8-12 minutes.

[0012] Furthermore, the secondary heating and shaping process involves heating at 160-170°C for 5-8 minutes under a pressure of 0.5-1 MPa.

[0013] In summary, this application has the following beneficial effects: This application uses PVC resin and EPDM rubber as polymer matrices to provide basic properties and processability. PVC resin, as the continuous phase, provides structural strength, rigidity, flame retardancy, and chemical resistance. It is low-cost, easy to process and mold, and forms the skeleton of the sheet, ensuring dimensional stability and a certain degree of support. EPDM rubber, as the dispersed phase, introduces high elasticity, excellent weather resistance, ozone resistance, and excellent low-temperature toughness, complementing the rigidity of PVC resin and greatly improving the flexibility and impact resistance of the sheet, making it less prone to brittleness. Nano-calcium carbonate, after surface treatment, can be uniformly dispersed in the matrix, playing a reinforcing role. As a stress concentration point, it induces shear yield deformation of the matrix, absorbing a large amount of energy while hindering crack propagation, thereby improving the overall toughness of the material. The addition of carbon nanotubes, with their high aspect ratio and strength, allows them to interlock in the matrix to form a three-dimensional network, significantly improving tensile strength and impact toughness. When subjected to external forces, the material can effectively transfer and disperse stress, preventing the propagation of microcracks. Adding AC foaming agent can generate a large number of uniform, fine closed-cell bubbles in the matrix. These closed-cell bubbles are excellent thermal insulators; the closed-cell structure can trap air, and the bubble walls can effectively reflect and scatter sound waves, achieving excellent thermal and sound insulation performance. Heat stabilizers can prevent the decomposition of PVC resin during high-temperature processing, prevent thermo-oxidative aging of the material during use, and improve processing release properties and surface smoothness. Dioctyl phthalate can insert into the molecular chains of PVC resin, weakening interchain forces, reducing melt viscosity, and improving processing fluidity, making the final product softer, and further enhancing the flexibility of the finished product in conjunction with EPDM rubber. Chlorinated polyethylene, as a polymer compatibilizer, has structures compatible with both PVC and EPDM rubber on its molecular chains, reducing interphase tension, improving compatibility, and preventing performance degradation due to phase separation. This application systematically solves the problems of insufficient toughness and mediocre sound insulation effect of traditional rubber and plastic insulation boards by using a composite ratio of multiple materials. The prepared boards can be widely used in fields with high requirements for heat insulation, sound insulation and material reliability, such as building walls, HVAC pipes, and vehicle cabins. Detailed Implementation

[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this invention.

[0015] The raw materials involved in the specific embodiments of this application are analytical grade. Specifically: the AC foaming agent is AC-1300, with a gas evolution rate >130, particle size 400 mesh, and moisture content <0.2%; the PVC resin was purchased from Wuhan Huarun Chemical Products Co., Ltd., CAS: 93050-82-9; the EPDM rubber was purchased from Nanjing Xintongyuan Bioengineering Co., Ltd., CAS: 23627-24-9; the nano-calcium carbonate has a particle size of 30-50nm; the carbon nanotubes have a length of 10-20μm and a diameter of 8-15nm; the chlorinated polyethylene was purchased from Nantong Zhonghe Chemical New Materials Co., Ltd., No. ZH15269; the dioctyl phthalate was purchased from Jinan Century Tongda Chemical Co., Ltd., CAS: 117-84-0; the foaming activator is zinc oxide, purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd., No. RF2021000524; and the heat stabilizer is calcium-zinc stabilizer, purchased from Jiangsu Qingfu New Materials Technology Co., Ltd., grade: SPC600.

[0016] Example 1 A high-toughness nano-rubber-plastic thermal insulation and soundproofing board is prepared by the following steps: S1. By mass, 12 parts of nano-calcium carbonate, 1 part of carbon nanotubes and 1.5 parts of isopropyltris(dioctylpyrophosphoryl)titanate are mixed in a high-speed mixer at 80°C and 1000 rpm for 10 minutes to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1, 90 parts of PVC resin, 3 parts of heat stabilizer, 10 parts of solid flame retardant (composed of aluminum hydroxide and antimony trioxide, with a mass ratio of aluminum hydroxide to antimony trioxide of 2:1), and 0.5 parts of antioxidant 1010 are added to a high-speed mixer and mixed at 100°C and 900 rpm for 8 minutes. Then, the mixture is cooled to below 50°C and discharged to obtain a premixed dry material. S3. By weight, add 30 parts of EPDM rubber, 20 parts of dioctyl phthalate, and 5 parts of chlorinated polyethylene to a mixer and mix at 60°C and 30 rpm for 2 minutes. Then add the premixed dry material obtained in step S2 and continue mixing at 110°C for 3 minutes. Then add 5 parts of AC foaming agent, 2 parts of foaming activator, and 1 part of lubricant (composed of polyethylene wax and stearic acid, with a mass ratio of polyethylene wax to stearic acid of 2:3) and continue mixing at 120°C for 3 minutes. Then discharge the material to a two-roll mill for mixing. The front roll temperature is 100°C and the speed is 20 rpm. The rear roll temperature is 105°C and the speed is 15 rpm. The roll gap is 1.5 mm. Pass through the mill 3 times and make triangular wraps 5 times. Increase the roll gap to 2.8 mm and extrude the sheet. Then cool naturally to room temperature to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold, maintain it at a pressure of 15MPa and a temperature of 140℃ for 8 minutes, quickly depressurize it to normal pressure (depressurization rate 15MPa / s), and then continue heating at 160℃ for 5 minutes under a pressure of 0.8MPa. Cool it to room temperature, demold it, and obtain a high-toughness nano-rubber-plastic thermal insulation and sound insulation board.

[0017] Example 2 A high-toughness nano-rubber-plastic thermal insulation and soundproofing board is prepared by the following steps: S1. By mass, 18 parts of nano-calcium carbonate, 2 parts of carbon nanotubes and 2 parts of isopropyltris(dioctylpyrophosphoryl)titanate are mixed in a high-speed mixer at 85°C and 1050 rpm for 10 minutes to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1, 95 parts of PVC resin, 4 parts of heat stabilizer, 15 parts of solid flame retardant (composed of aluminum hydroxide and antimony trioxide, with a mass ratio of aluminum hydroxide to antimony trioxide of 3:1), and 0.8 parts of antioxidant 1010 are added to a high-speed mixer and mixed at 105°C and 950 rpm for 9 minutes. The mixture is then cooled to below 50°C and discharged to obtain a premixed dry material. S3. By weight, add 35 parts of EPDM rubber, 25 parts of dioctyl phthalate, and 8 parts of chlorinated polyethylene to a mixer and mix at 65°C and 35 rpm for 2 minutes. Then add the premixed dry material obtained in step S2 and continue mixing at 115°C for 3 minutes. Then add 6 parts of AC foaming agent, 3 parts of foaming activator, and 1.5 parts of lubricant (composed of polyethylene wax and stearic acid, with a mass ratio of polyethylene wax to stearic acid of 2:3) and continue mixing at 122°C for 3 minutes. Then discharge the material to a two-roll mill for mixing. The front roll temperature is 103°C and the speed is 22 rpm. The rear roll temperature is 108°C and the speed is 18 rpm. The roll gap is 1.8 mm. Pass through the mill 4 times and make triangular wraps 6 times. Increase the roll gap to 2.9 mm and extrude the sheet. Then cool naturally to room temperature to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold, maintain it at a pressure of 17MPa and a temperature of 145℃ for 10 minutes, quickly depressurize it to normal pressure (depressurization rate 15MPa / s), and then continue heating at 165℃ for 7 minutes under a pressure of 0.8MPa. Cool it to room temperature, demold it, and obtain a high-toughness nano-rubber-plastic thermal insulation and sound insulation board.

[0018] Example 3 A high-toughness nano-rubber-plastic thermal insulation and soundproofing board is prepared by the following steps: S1. By mass, 25 parts of nano-calcium carbonate, 3 parts of carbon nanotubes and 2.5 parts of isopropyltris(dioctylpyrophosphoryl)titanate are mixed in a high-speed mixer at 90°C and 1100 rpm for 10 minutes to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1 are added to a high-speed mixer along with 100 parts of PVC resin, 5 parts of heat stabilizer, 20 parts of solid flame retardant (composed of aluminum hydroxide and antimony trioxide, with a mass ratio of aluminum hydroxide to antimony trioxide of 4:1) and 1 part of antioxidant 1010. The mixture is then mixed at 1000 rpm for 10 minutes at a temperature of 110°C, and then cooled to below 50°C before being discharged to obtain a premixed dry material. S3. By weight, add 40 parts of EPDM rubber, 30 parts of dioctyl phthalate, and 10 parts of chlorinated polyethylene to a mixer and mix at 70°C and 40 rpm for 2 minutes. Then add the premixed dry material obtained in step S2 and continue mixing at 120°C for 3 minutes. Then add 8 parts of AC foaming agent, 4 parts of foaming activator, and 2 parts of lubricant (composed of polyethylene wax and stearic acid, with a mass ratio of polyethylene wax to stearic acid of 2:3) and continue mixing at 125°C for 4 minutes. Then discharge the material to a two-roll mill for mixing. The front roll temperature is 105°C and the speed is 25 rpm. The rear roll temperature is 110°C and the speed is 20 rpm. The roll gap is 2.0 mm. Pass through the mill 5 times and make triangular wraps 6 times. Increase the roll gap to 3 mm and then extrude the sheet. Then cool naturally to room temperature to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold, maintain it at a pressure of 20MPa and a temperature of 150℃ for 12 minutes, quickly depressurize it to normal pressure (depressurization rate 15MPa / s), and then continue heating at 170℃ for 8 minutes under a pressure of 0.8MPa. Cool it to room temperature, demold it, and obtain a high-toughness nano-rubber-plastic thermal insulation and sound insulation board.

[0019] Compare with Example 1 The difference between this comparative example and Example 3 is that the high-toughness nano-rubber-plastic thermal insulation and sound insulation board of this comparative example is prepared by the following steps: S1. By mass, 25 parts of nano-silica, 3 parts of carbon nanotubes and 2.5 parts of isopropyltris(dioctylpyrophosphoryl)titanate are mixed in a high-speed mixer at 90°C and 1100 rpm for 10 minutes to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1 are added to a high-speed mixer along with 100 parts of PVC resin, 5 parts of heat stabilizer, 20 parts of solid flame retardant (composed of aluminum hydroxide and antimony trioxide, with a mass ratio of aluminum hydroxide to antimony trioxide of 4:1) and 1 part of antioxidant 1010. The mixture is then mixed at 1000 rpm for 10 minutes at a temperature of 110°C, and then cooled to below 50°C before being discharged to obtain a premixed dry material. S3. By weight, add 40 parts of EPDM rubber, 30 parts of dioctyl phthalate, and 10 parts of chlorinated polyethylene to a mixer and mix at 70°C and 40 rpm for 2 minutes. Then add the premixed dry material obtained in step S2 and continue mixing at 120°C for 3 minutes. Then add 8 parts of AC foaming agent, 4 parts of foaming activator, and 2 parts of lubricant (composed of polyethylene wax and stearic acid, with a mass ratio of polyethylene wax to stearic acid of 2:3) and continue mixing at 125°C for 4 minutes. Then discharge the material to a two-roll mill for mixing. The front roll temperature is 105°C and the speed is 25 rpm. The rear roll temperature is 110°C and the speed is 20 rpm. The roll gap is 2.0 mm. Pass through the mill 5 times and make triangular wraps 6 times. Increase the roll gap to 3 mm and then extrude the sheet. Then cool naturally to room temperature to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold, maintain it at a pressure of 20MPa and a temperature of 150℃ for 12 minutes, quickly depressurize it to normal pressure (depressurization rate 15MPa / s), and then continue heating at 170℃ for 8 minutes under a pressure of 0.8MPa. Cool it to room temperature, demold it, and obtain a high-toughness nano-rubber-plastic thermal insulation and sound insulation board.

[0020] Compare with Example 2 The difference between this comparative example and Example 3 is that the high-toughness nano-rubber-plastic thermal insulation and sound insulation board of this comparative example is prepared by the following steps: S1. By mass, 25 parts of nano-calcium carbonate, 3 parts of carbon nanotubes and 2.5 parts of isopropyltris(dioctylpyrophosphoryl)titanate are mixed in a high-speed mixer at 90°C and 1100 rpm for 10 minutes to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1 are added to a high-speed mixer along with 100 parts of PVC resin, 5 parts of heat stabilizer, 20 parts of solid flame retardant (composed of aluminum hydroxide and antimony trioxide, with a mass ratio of aluminum hydroxide to antimony trioxide of 4:1) and 1 part of antioxidant 1010. The mixture is then mixed at 1000 rpm for 10 minutes at a temperature of 110°C, and then cooled to below 50°C before being discharged to obtain a premixed dry material. S3. By weight, add 40 parts of EPDM rubber, 30 parts of dioctyl phthalate, 10 parts of chlorinated polyethylene, the premixed dry material obtained in step S2, 8 parts of AC foaming agent, 4 parts of foaming activator, and 2 parts of lubricant (composed of polyethylene wax and stearic acid, with a mass ratio of polyethylene wax to stearic acid of 2:3) to a mixer and mix at 125°C for 9 minutes. Then discharge the material to a two-roll mill for mixing. The front roll temperature is 105°C and the speed is 25 rpm. The rear roll temperature is 110°C and the speed is 20 rpm. The roll gap is 2.0 mm. Pass through the mill 5 times and make triangular wraps 6 times. Increase the roll gap to 3 mm and then extrude the sheet. After that, let it cool naturally to room temperature to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold, maintain it at a pressure of 20MPa and a temperature of 150℃ for 12 minutes, quickly depressurize it to normal pressure (depressurization rate 15MPa / s), and then continue heating at 170℃ for 8 minutes under a pressure of 0.8MPa. Cool it to room temperature, demold it, and obtain a high-toughness nano-rubber-plastic thermal insulation and sound insulation board.

[0021] Performance testing Functional tests were conducted on the thermal insulation and sound insulation boards prepared in Examples 1-3 and Comparative Examples 1-2.

[0022] Tensile property test: Tensile strength was measured according to standard GB / T 1040.2-2022; Impact performance test: Impact strength was measured according to standard GB / T 1043.1-2008; Thermal insulation performance test: Thermal conductivity was measured according to standard GB / T 10294-2008; Sound insulation performance test: The weighted sound insulation was measured according to the standard GB / T 19889.3-2005; The test results are shown in Table 1: Table 1

[0023] As shown in Table 1, the high-toughness nano-rubber-plastic thermal insulation and sound insulation board prepared in the embodiments of this application has excellent mechanical properties and thermal insulation and sound insulation effects. It exhibits high tensile strength and impact strength, effectively absorbing impact energy. Its good tensile strength and excellent impact resistance indicate high toughness. The low thermal conductivity indicates good thermal insulation effect, and the low weighted sound insulation indicates good sound insulation. In contrast, Comparative Example 1 uses nano-silica instead of nano-calcium carbonate, resulting in lower impact strength (indicating reduced toughness) and higher thermal conductivity (indicating poor thermal insulation effect), indicating that Comparative Example 1 is inferior to Example 3. In Comparative Example 2, the material is subjected to intensive mixing at 125°C for 9 minutes in a single operation, resulting in reduced tensile strength, reduced impact strength, and lower thermal insulation and sound insulation effects, indicating that Comparative Example 1 is inferior to Example 3.

[0024] The above description is merely an example and illustration of the concept of this application. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the inventive concept or exceed the scope defined in the claims, they should all fall within the protection scope of this application.

Claims

1. A high-toughness nano-rubber-plastic thermal insulation and soundproofing board, characterized in that, Prepared by the following steps: S1. By weight, mix 12-25 parts of nano-calcium carbonate, 1-3 parts of carbon nanotubes and 1.5-2.5 parts of titanate coupling agent to obtain pretreated nanomaterials. S2. By mass, the pretreated nanomaterials obtained in step S1 are mixed with 90-100 parts of PVC resin, 3-5 parts of heat stabilizer, 10-20 parts of solid flame retardant, and 0.5-1 parts of antioxidant to obtain a premixed dry material. S3. By weight, add 30-40 parts of EPDM rubber, 20-30 parts of dioctyl phthalate, and 5-10 parts of chlorinated polyethylene to a mixer for a first mixing. Then add the premixed dry material obtained in step S2 for a second mixing. Next, add 5-8 parts of AC foaming agent, 2-4 parts of foaming activator, and 1-2 parts of lubricant for a third mixing. After that, discharge the material to a two-roll mill for mixing and cooling to obtain the rubber compound. S4. Place the rubber material obtained in step S3 into the mold and pressurize and heat it once, then release the pressure, heat it a second time to shape it, cool it and demold it to obtain a high-toughness nano rubber and plastic thermal insulation and sound insulation board.

2. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The mixing described in step S1 is performed at 80-90°C and a speed of 1000-1100 rpm for 10-15 minutes.

3. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The mixing described in step S2 is performed at a temperature of 100-110°C and a speed of 900-1000 rpm for 8-10 minutes.

4. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The first intensive mixing is carried out at 60-70℃ and 30-40 rpm for 2-3 minutes.

5. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The secondary mixing is carried out at 110-120℃ and 30-40 rpm for 2-3 minutes.

6. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The three intensive mixing processes are carried out at 120-125℃ and a speed of 30-40 rpm for 3-4 minutes.

7. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The two-roll open mill operates under the following conditions: front roll temperature 100-105℃, rotation speed 20-25rpm, rear roll temperature 105-110℃, rotation speed 15-20rpm, roll gap 1.5-2.0mm, thin pass 3-5 times, triangular wrap 5-6 times, and then the roll gap is increased to 2.8-3mm for sheet output.

8. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The initial pressurization heating is maintained at a pressure of 15-20 MPa and a temperature of 140-150°C for 8-12 minutes.

9. The high-toughness nano-rubber-plastic thermal insulation and soundproofing board according to claim 1, characterized in that, The secondary heating and shaping process involves heating at 160-170°C for 5-8 minutes under a pressure of 0.5-1 MPa.

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