Polybutylene polymer vibration-resistant material modified by film adhesive and preparation method of polybutylene polymer vibration-resistant material

Abstract

The invention relates to a film adhesive modified polybutylene polymer vibration-resistant material and a preparation method thereof, and belongs to the field of vibration-resistant materials, and the film adhesive modified polybutylene polymer vibration-resistant material comprises a film adhesive and a polybutylene polymer, the film adhesive comprises an ethylene copolymer, a tackifier, a dissolving agent, an emulsifier, a filler, a stabilizer and water; the polybutylene polymer comprises a polybutylene copolymer, a tackifier, a dissolving agent and a reinforcing agent. The raw materials used in the invention and the prepared vibration damping material are environment-friendly materials, are stable in performance in a room temperature environment, are not easy to deliquesce and mildew, do not generate substances harmful to a human body, prolong the storage life of the material, and do not influence the health of the human body. The prepared vibration damping material is good in flexibility, and the low-temperature mechanical property, the sound vibration absorption performance and the weakening performance are improved. According to the preparation method, the solvent can be thoroughly removed, the solvent recovery rate is high, the environment is not polluted, and operators are not hurt. The anti-vibration material prepared by the invention has a good anti-vibration effect.

Description

Technical Field

[0001] This invention belongs to the field of vibration damping materials technology, specifically relating to a polybutene-based polymer vibration damping material modified with a thin film adhesive and its preparation method. Background Technology

[0002] Among existing vibration damping materials, asphalt-based and resin-based polymer-based materials are widely used. However, the quality of raw materials used in asphalt-based materials varies, potentially leading to unstable performance and significant deviations in the prepared materials. Furthermore, existing asphalt-based materials and their raw materials have poor environmental performance, posing a risk of personal injury. Additionally, due to raw material limitations and the viscoelastic nature of the products, existing asphalt-based and resin-based polymer-based vibration damping materials are highly hygroscopic, severely impacting their shelf life. Moreover, the raw materials are mostly low-melting-point viscoelastic materials with high low-temperature glass points, resulting in low overall modulus and strength. These materials are prone to flowing at high temperatures and exhibiting brittleness at low temperatures, making them susceptible to damage. Therefore, they cannot simultaneously achieve both high temperature resistance and high strength in vibration damping materials. Due to their poor high and low temperature resistance and narrow glass transition temperature range, existing asphalt-based and other resin-based polymer-based vibration damping materials cannot improve the loss factor at both high and low temperatures, thus hindering their vibration damping effect. Existing asphalt-based and resin-based polymer vibration damping materials have poor flame retardancy due to the addition of a large amount of fillers.

[0003] The existing preparation processes for asphalt-based and resin-based polymer vibration damping materials suffer from incomplete solvent removal, low solvent recovery rates, complex processes, and environmental pollution and personnel harm. Summary of the Invention

[0004] To address the shortcomings and defects of existing vibration damping materials, this invention provides a polybutene-based polymer vibration damping material modified with a thin-film adhesive and its preparation method, aiming to achieve higher vibration damping performance.

[0005] The technical solution adopted by this invention to solve the technical problem is as follows:

[0006] The present invention discloses a polybutene-based polymer vibration damping material modified with a film adhesive, which mainly comprises: a film adhesive and a polybutene-based polymer, wherein the mass ratio of the film adhesive to the polybutene-based polymer is (1-3):(0.5-1);

[0007] The film adhesive comprises an ethylene copolymer, a tackifier, a solvent, an emulsifier, a filler, a stabilizer, and water, wherein the mass ratio of the ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water is (1-2):(1-4):(1-5):(1-5):(1-8):(1-8):(30-50);

[0008] The polybutene polymer comprises a polybutene copolymer, a tackifier, a solvent, and a reinforcing agent, wherein the mass ratio of the polybutene copolymer, tackifier, solvent, and reinforcing agent is (1-6):(1-2):

[0009] (5-10):(15-22).

[0010] Preferably, the ethylene copolymer is selected from one or more of EVA, EVAL, EEA, EAA, AES, EVOH, and POE.

[0011] Preferably, the tackifier is selected from two or more of the following: rosin, α-terpene resin, C5 petroleum resin, maleic acid rosin, β-terpene resin, terpene phenolic resin, and C9 petroleum resin.

[0012] Preferably, the solvent is selected from two or more of ethyl acetate, butyl acetate, toluene, xylene, alcohol, dipentene, trichloroethylene, and carbon tetrachloride; or the solvent is selected from two or more of 120# gasoline, naphtha, residual solvent oil, 120# rubber solvent oil, 120# petroleum hydrocarbon solvent oil, aliphatic hydrocarbon solvent oil, 30 petroleum ether, and 93# unleaded gasoline.

[0013] Preferably, the emulsifier is selected from one or more of alkylphenol polyoxyethylene ether, linear alkylbenzene sulfonate, glyceryl monostearate, sodium lauryl sulfate, nonylphenol polyoxyethylene ether, and acetone O.

[0014] Preferably, the filler is selected from two or more of microcline, feldspar, apatite, tremolite, diopside, and calcite.

[0015] Preferably, the stabilizer is selected from two or more of dolomite, brucite, aluminic acid monohydrate, lightly calcined magnesia, bauxite, diaspore, and lamp powder.

[0016] Preferably, the polybutene copolymer is selected from one or more of butyl rubber, cis-butadiene rubber, nitrile rubber, styrene-butadiene rubber, chloroprene rubber, and polyisobutylene.

[0017] Preferably, the reinforcing agent is selected from two or more of quartz, chalcedony, calcite, hydromica, kaolinite, glauconite, yellow phosphorus, and red phosphorus.

[0018] The present invention provides a method for preparing a polybutene-based polymer vibration damping material modified with a thin-film adhesive, which mainly includes the following steps:

[0019] An ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water are mixed evenly at room temperature to obtain a film adhesive. A polybutene copolymer is dissolved in a solvent, and the dissolved polybutene copolymer, tackifier, and reinforcing agent are mixed evenly at room temperature to obtain a polybutene polymer. The film adhesive and polybutene polymer are mixed and stirred evenly, then allowed to stand for 10-15 minutes to remove excess solvent and water, and then heated to 100-130℃ to obtain the finished product.

[0020] The beneficial effects of this invention are:

[0021] The present invention provides a polybutene-based polymer vibration damping material modified with a thin-film adhesive, the main principle of which is as follows:

[0022] When film adhesives and polybutene polymers are mixed, the organic solvents in the solvent of the film adhesive and the hydrativizing groups in the emulsifier have similar structures to the hydrativizing groups in the solvent oil of the polybutene polymer solvent, resulting in dissolution. The emulsifier penetrates between the surfaces of other components and the solvent oil, forming a directional adsorption film that wets and emulsifies the solvent oil, reducing the oil-water interfacial tension and decreasing its adhesion to the surfaces of other components, causing it to peel off. The emulsifier breaks down the solvent oil into fine emulsion particles, forming a robust adsorption layer dispersed in the solution. After the solvent oil separates from the surfaces of other components, a significant portion is dissolved into micelles due to the solubilizing effect of the emulsifier, leaving only a small amount of oil floating on the surface. Subsequently, the extrusion pressure generated by the manual stirring of all components causes the solvent to precipitate. Because the solvent has a lower density than other components, the continuously precipitated solvent becomes a lighter component in the solution system during the stirring process, achieving the effect of separating the solvent from the polymer.

[0023] The raw materials used in this invention, as well as the vibration-damping materials prepared, are all environmentally friendly materials and products. They are stable at room temperature, do not easily deliquesce or mold, and do not produce substances harmful to the human body, thus extending the material's shelf life and having no impact on human health. The vibration-damping material products prepared by this invention possess excellent flexibility, thereby endowing them with low-temperature mechanical properties, sound vibration absorption properties, and sound vibration attenuation properties. The preparation method of this invention can completely remove the solvent, has a high solvent recovery rate, does not pollute the environment, and will not cause harm to operators.

[0024] Since material vibrations occur in the low-frequency range of sound, the viscoelasticity and porous structure of the material facilitate the absorption and conduction of sound vibrations. The good strength of the internal structure weakens or suppresses the absorption and conduction of sound vibrations during this process. Mid- and high-frequency vibration noise generated by excessive vibration can be dispersed and blocked by increasing the material density and forming diffuse reflective surfaces. In this invention, stirring generates a large number of bubbles, which are incorporated into the blend. Heating dries and evaporates the internal water and solvent, naturally forming regular pores within the blend, thereby improving the material's vibration damping effect.

[0025] In addition, the polybutene-based polymer vibration damping material modified with a film adhesive of the present invention has the characteristics of vibration damping, flame retardancy, radiation protection, low density, and environmental protection. It can be used to manufacture the attachment material for external protective equipment in the field of communication switching equipment, meeting the requirements of lightweight, high flame retardancy, and environmental protection of protective equipment in communication switching equipment. Attached Figure Description

[0026] Figure 1 The results show the vibration damping performance test results of the finished sheet prepared in Example 1.

[0027] Figure 2 The results show the vibration damping performance test results of the finished sheet prepared in Example 2. Detailed Implementation

[0028] The present invention provides a polybutene-based polymer vibration damping material modified with a film adhesive, which is mainly composed of a film adhesive and a polybutene polymer.

[0029] The mass ratio of film adhesive to polybutene polymer is (1-3):(0.5-1).

[0030] The film adhesive is mainly composed of ethylene copolymers, tackifiers, solvents, emulsifiers, fillers, stabilizers and water. The mass ratio of ethylene copolymers, tackifiers, solvents, emulsifiers, fillers, stabilizers and water is (1-2):(1-4):(1-5):(1-5):(1-8):(1-8):(30-50).

[0031] Among them, polybutene polymers are mainly composed of polybutene copolymers, tackifiers, solvents and reinforcing agents. The mass ratio of polybutene copolymers, tackifiers, solvents and reinforcing agents is (1-6):(1-2):(5-10):(15-22).

[0032] Among them, the ethylene copolymers are selected from one or more of EVA, EVAL, EEA, EAA, AES, EVOH, and POE.

[0033] Preferably, the density of the ethylene copolymer is 0.8 g / cm³. 3 -1.3g / cm 3 And its operating temperature is room temperature.

[0034] The tackifier is selected from two or more of the following: rosin, α-terpene resin, C5 petroleum resin, maleic acid rosin, β-terpene resin, terpene phenolic resin, and C9 petroleum resin.

[0035] Preferably, the density of the tackifier is 0.8 g / cm³. 3 -1.1g / cm 3 And its operating temperature is room temperature.

[0036] The solvent is selected from two or more of ethyl acetate, butyl acetate, toluene, xylene, alcohol, dipentene, trichloroethylene, and carbon tetrachloride; or the solvent is selected from two or more of 120# gasoline, naphtha, residual solvent oil, 120# rubber solvent oil, 120# petroleum hydrocarbon solvent oil, aliphatic hydrocarbon solvent oil, 30 petroleum ether, and 93# unleaded gasoline.

[0037] Preferably, the density of the solvent is 0.8 g / cm³. 3 -1.2g / cm 3 And its operating temperature is room temperature.

[0038] The emulsifier is selected from one or more of alkylphenol polyoxyethylene ether, linear alkylbenzene sulfonate sodium, glyceryl monostearate stearate, sodium lauryl sulfate, nonylphenol polyoxyethylene ether, and Pingpingjia O.

[0039] Preferably, the density of the emulsifier is 0.8 g / cm³. 3 -1.2g / cm 3 And its operating temperature is room temperature.

[0040] The filler is selected from two or more of the following: microcline, feldspar, apatite, tremolite, diopside, and calcite.

[0041] Preferably, the filler has a mesh size of 10-1000 mesh and a density of 2.3 g / cm³. 3 -2.9g / cm 3 And its operating temperature is room temperature.

[0042] The stabilizer is selected from two or more of the following: dolomite, brucite, aluminate monohydrate, calcined magnesia, bauxite, diaspore, and lamp powder.

[0043] Preferably, the stabilizer has a mesh size of 50-1000 mesh and a density of 1.5 g / cm³. 3 -3.5g / cm 3And its operating temperature is room temperature.

[0044] Among them, the polybutene copolymer is selected from one or more of butyl rubber, cis-butadiene rubber, nitrile rubber, styrene-butadiene rubber, chloroprene rubber, and polyisobutylene.

[0045] Preferably, the density of the polybutene copolymer is 0.8 g / cm³. 3 -1.3g / cm 3 And its operating temperature is room temperature.

[0046] The reinforcing agent is selected from two or more of the following: quartz, chalcedony, calcite, hydromica, kaolinite, glauconite, yellow phosphorus, and red phosphorus.

[0047] Preferably, the reinforcing agent has a mesh size of 50-1000 mesh and a density of 1.5 g / cm³. 3 -3.5g / cm 3 And its operating temperature is room temperature.

[0048] The present invention provides a method for preparing a polybutene-based polymer vibration damping material modified with a thin-film adhesive, which specifically includes the following steps:

[0049] First, ethylene copolymers, tackifiers, solvents, emulsifiers, fillers, stabilizers, and water are mixed evenly in a simple container at room temperature in a mass ratio of (1-2):(1-4):(1-5):(1-5):(1-8):(1-8):(30-50) to obtain a film adhesive. Then, polybutene polymers are heated to 100-130℃ in a heating and drying device. The heated polybutene copolymers can be artificially formed into sheet shapes. The sheets are then mixed with a solvent and placed in a simple container until the sheets are fully dissolved in the solvent. The dissolved polybutene copolymers are then copolymerized... The agent, tackifier, and reinforcing agent are mixed uniformly in a simple container at room temperature in a mass ratio of (1-6):(1-2):(5-10):(15-22) to obtain a polybutene polymer. Then, the film adhesive and polybutene polymer are mixed in a simple container at a mass ratio of (1-3):(0.5-1) at room temperature. After manual stirring, the mixture is allowed to stand for 10-15 minutes to remove most of the excess solvent and water. The mixture is then heated to 100-130℃ for multiple removal processes. Finally, the remaining small amount of water and solvent is removed under a heating and drying environment to obtain the final product. The solvent and water can be collected separately and recycled with the same components. The finished product can be used directly for subsequent processing according to the required product specifications and various molding methods.

[0050] The functions and roles of each added component are as follows:

[0051] In film adhesives, ethylene copolymers mainly serve to increase the strength and flexibility of the main body of the vibration damping material. At the same time, they can compensate for the low strength of polybutene copolymers and improve the viscoelasticity of polybutene copolymers, preventing them from flowing at high temperatures.

[0052] Emulsifiers in film adhesives act as surfactants that stabilize emulsions. When added to an oil-water system, water and oil can mix together to form a completely dispersed emulsion. When combined with a solvent, the emulsifier can improve its solubility, accelerate the reduction of oil-water interfacial tension, and allow the polymer to remove most of the solvent.

[0053] The fillers in the film adhesive can enhance the overall strength of the vibration damping material. Due to the naturally formed internal pore structure, they can weaken the vibrations generated by sound. Furthermore, due to their own fire-resistant properties, combined with reinforcing agents, the polymer's resistance to burning is enhanced.

[0054] The stabilizers in film adhesives are insoluble in water and solvents. They mainly play a role in stabilizing the heavy components and assist in the flame retardant effect of phosphorus compounds, thereby increasing the flame retardant effect of the polymer. They can also prevent the filler from having a large bulk volume, which would cause poor material flexibility.

[0055] Polybutene copolymers in polybutene polymers increase the strength and flexibility of the main body of vibration damping materials, and can also improve the problem of poor low-temperature brittleness of vibration damping materials. Because it is a viscoelastic material, polybutene polymers have viscoelasticity, which weakens the vibration generated by sound and improves the vibration damping effect.

[0056] The reinforcing agent in polybutene polymer enhances the overall strength of the vibration damping material and has flame retardant properties. It can be combined with fillers and stabilizers to form a good flame retardant system, improve the burning resistance of the vibration damping material, shorten the burning time, produce no smoke during combustion, reduce the burned area, and also avoid the phenomenon of poor flexibility of the vibration damping material caused by the large accumulation volume of fillers.

[0057] Tackifiers in film adhesives and polybutene polymers can increase the viscosity of the system, keeping it in a uniform and stable suspension or emulsion state, or forming a gel, giving the polymer viscoelasticity, which weakens the vibrations generated by sound and improves the vibration damping effect.

[0058] The solvents in the film adhesive and polybutene polymer can quickly dissolve polybutane copolymers and ethylene copolymers, reducing swelling time and improving production efficiency. During the mixing of the film adhesive and polybutene polymer mixture, after manual stirring, the solvent and emulsifier can form dissolving droplets, allowing the interface between the polymer and filler to dissolve in water. A large amount of the liquid separated during manual stirring can be filtered and recycled, while other components form aggregates.

[0059] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise specified, all raw materials, reagents, instruments and equipment used in the present invention can be purchased on the market or prepared by existing methods.

[0060] Example 1

[0061] A method for preparing a polybutene-based polymer vibration damping material modified with a thin-film adhesive, specifically comprising:

[0062] An ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water are mixed uniformly in a simple container at room temperature according to a mass ratio of 2:4:5:5:8:8:50 to obtain a film adhesive. The mixing time is 15 minutes. A polybutene polymer is heated to 130°C in a heating and drying equipment. The heated polybutene copolymer can be artificially formed into sheet shapes. The sheets are then mixed with solvent and placed in a simple container until the sheets are fully dissolved in the solvent. The dissolved polybutene copolymer, tackifier, and reinforcing agent are mixed uniformly in a simple container at room temperature according to a mass ratio of 6:2:10:22 to obtain a polybutene polymer. The mixing time is 60 minutes.

[0063] The ethylene copolymers are mixtures of EVA, EEA, and EAA; the polybutene copolymers are mixtures of butyl rubber, cis-butadiene rubber, and nitrile rubber; the tackifiers are mixtures of rosin, α-terpene resin, and C5 petroleum resin; the solvents are mixtures of ethyl acetate, butyl acetate, and trichloroethylene; the emulsifiers are mixtures of alkylphenol polyoxyethylene ether, sodium linear alkylbenzene sulfonate, and glyceryl stearate; the fillers are mixtures of microcline, apatite, and calcite; the stabilizers are mixtures of aluminic acid monohydrate, lightly calcined magnesia, bauxite, and lamp powder; and the reinforcing agents are mixtures of quartz, chalcedony, yellow phosphorus, and red phosphorus.

[0064] Next, the film adhesive and polybutene polymer are mixed in a simple container at a mass ratio of 3:1 at room temperature for 15 minutes. After manual stirring to ensure homogeneity, the mixture is allowed to stand for 15 minutes to remove most of the excess solvent and water. The mixture is then heated to 110°C for multiple removal processes. Finally, the remaining small amount of water and solvent is removed under a heat-drying environment, yielding the final product. The solvent and water can be separated and collected for recycling with the same components. The finished product can be used directly for subsequent processing according to the required product specifications, dimensions, and various molding methods.

[0065] The mechanical properties of the finished sheet were tested using existing testing techniques and methods. The test results are shown in Table 1.

[0066] The DMA loss factor of the finished sheet was tested using existing testing techniques and methods. The results are shown in Table 2 and... Figure 1 The DMA dynamic thermomechanical analyzer used in the test was a DMS6100. The DMA loss factor test method was as follows: a 3 mm thick sample was prepared, and the loss factor (tanδ) of the material in the range of -40 to 60 °C was tested on the DMA.

[0067] Table 1. Test results of mechanical and other properties of the finished sheet obtained in Example 1.

[0068]

[0069]

[0070] Table 2. DMA loss factor test results of the finished sheet obtained in Example 1.

[0071] Performance Entries Pre-determined goals Finished sheet material obtained in Example 1 Loss factor 0.6 / 20℃，0.5 / 40℃ 0.90 / 20℃，0.88 / 40℃

[0072] Example 2

[0073] A method for preparing a polybutene-based polymer vibration damping material modified with a thin-film adhesive, specifically comprising:

[0074] An ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water are mixed uniformly in a simple container at room temperature in a mass ratio of 2:4:5:5:8:8:40 to obtain a film adhesive. The mixing time is 15 minutes. A polybutene polymer is heated to 130°C in a heating and drying equipment. The heated polybutene copolymer can be artificially formed into sheet shapes. The sheets are then mixed with solvent and placed in a simple container until the sheets are fully dissolved in the solvent. The dissolved polybutene copolymer, tackifier, and reinforcing agent are mixed uniformly in a simple container at room temperature in a mass ratio of 6:2:10:20 to obtain a polybutene polymer. The mixing time is 60 minutes.

[0075] The ethylene copolymers are a mixture of EVAL, AES, EVOH, and POE; the polybutene copolymers are a mixture of styrene-butadiene rubber, chloroprene rubber, and polyisobutylene; the tackifiers are a mixture of maleic acid rosin, β-terpene resin, terpene phenolic resin, and C9 petroleum resin; the solvents are a mixture of aliphatic hydrocarbon solvent oil, 30 petroleum ether, and 93# unleaded gasoline; the emulsifiers are a mixture of sodium lauryl sulfate, nonylphenol polyoxyethylene ether, and acetone; the fillers are a mixture of feldspar, tremolite, and diopside; the stabilizers are a mixture of dolomite, brucite, and diaspore; and the reinforcing agents are a mixture of calcite, hydromica, kaolinite, and glauconite.

[0076] Next, the film adhesive and polybutene polymer are mixed in a simple container at a mass ratio of 3:1 at room temperature for 15 minutes. After manual stirring to ensure homogeneity, the mixture is allowed to stand for 15 minutes to remove most of the excess solvent and water. The mixture is then heated to 130°C for multiple removal processes. Finally, the remaining small amount of water and solvent is removed under a heat-drying environment, yielding the final product. The solvent and water can be separated and collected for recycling with the same components. The finished product can be used directly for subsequent processing according to the required product specifications, dimensions, and various molding methods.

[0077] The mechanical and other properties of the finished sheet were tested using existing testing techniques and methods. The test results are shown in Table 3.

[0078] The DMA loss factor of the manufactured sheet was tested using existing testing techniques and methods. The results are shown in Table 4 and . Figure 2 The DMA dynamic thermomechanical analyzer used in the test was a DMS6100. The DMA loss factor test method was as follows: a 3 mm thick sample was prepared, and the loss factor (tanδ) of the material in the range of -40 to 60 °C was tested on the DMA.

[0079] Table 3. Test results of mechanical and other properties of the finished sheet obtained in Example 2.

[0080]

[0081]

[0082] Table 4. DMA loss factor test results of the finished sheet obtained in Example 2.

[0083] Performance Entries Pre-determined goals Finished sheet obtained in Example 2 Loss factor 0.6 / 20℃，0.5 / 40℃ 0.91 / 20℃，0.89 / 40℃

[0084] Results analysis:

[0085] As shown in Tables 1 and 3, the finished sheets prepared in Examples 1 and 2 exhibit good overall performance. Specifically, their density is 1.6 ± 0.2 g / cm³. 3 The finished sheet material at this density possesses a good molecular weight distribution and supporting volume, and its resistance to changes in physical state temperature and pressure is effectively improved. Its tensile strength is ≥2.0 MPa, and the finished sheet material's resistance to maximum uniform plastic deformation is greater than other similar materials. This is because the polybutene polymer used in the preparation process of this invention, after being mixed with other fillers and dried, can form a thermoplastic material body, which further improves the tensile strength and mechanical properties of the finished sheet material. Its elongation at break is greater than that of other existing similar materials. The high elongation at break gives the vibration-damping material good elasticity and flexibility, strong resistance to damage, and the ability to buffer external forces. Its tear strength is ≥5 N / mm. In the polybutene polymer used in this invention, the various substances form an internal porous structure between water and solvent during mixing. This internal porous structure gives the finished sheet high tear strength (≥5 N / mm), ensuring good strength and preventing tearing when cut or sewn. Simultaneously, the prepared finished sheet has the highest flame retardant rating in Europe (EN). 45545 (R10, HL3), and with a high oxygen index, the high flame retardant rating and oxygen index ensure that the finished sheet will not produce blue smoke or burn through during combustion, and has advantages such as non-dripping, small damaged area, and self-extinguishing after removal from the flame; its hardness is between 65-75, which has good resistance to hard objects pressing into its surface and good resistance to the intrusion of external objects, and is not easily damaged; its high temperature resistance is no flow at 100℃ for 30 minutes, and its low temperature resistance is no breakage when bending φ10mm above -25℃. This is because the present invention makes... Using ethylene copolymers as the main material, ethylene copolymers have high molecular weight and good physical and mechanical properties under high temperature conditions. This can compensate for the shortcomings of polybutene copolymers, which are prone to flow at high temperatures due to their low molecular weight and viscoelastic properties. At the same time, polybutene copolymers can compensate for the problem of ethylene copolymers being brittle and prone to damage at lower temperatures. This results in finished sheets with good physical, mechanical, and vibration damping properties when used in specific ambient temperatures. The prepared finished sheets are odorless, environmentally friendly, and pollution-free, and will not cause harm to the human body.

[0086] Because the finished sheet prepared by this invention possesses viscoelastic and high-strength properties, and with a higher viscoelastic melting point and a lower low-temperature glass point, the overall high and low temperature resistance of the finished sheet is improved, resulting in higher overall modulus and strength, and a wider glass transition temperature range. Therefore, this invention achieves an increase in the loss factor of the vibration-damping material in both high-temperature and low-temperature ranges, significantly enhancing its vibration-damping effect. Test results (Tables 2 and 4) Figure 1 and Figure 2 The results show that the finished sheet material prepared by this invention has a maximum loss factor of 0.95 at 30℃, and reaches 0.90 and 0.88 (Example 1) and 0.91 and 0.89 (Example 2) at 20℃ and 40℃ respectively, far exceeding the preset targets (0.6 / 20℃, 0.5 / 40℃) and higher than the optimal values ​​of other similar materials. Simultaneously, the finished sheet material prepared by this invention has a high loss modulus, ensuring its vibration damping effect after application; the peak value of the maximum loss modulus of the finished sheet material prepared by this invention is located at -15℃, ensuring good performance in the low-temperature range, while other similar materials do not simultaneously possess these characteristics.

[0087] This invention discloses a polybutene-based polymer vibration-damping material modified with a film adhesive and its preparation method. Those skilled in the art can refer to the content of this document and appropriately modify the process parameters to achieve the same result. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The product of this invention has been described through preferred embodiments, and those skilled in the art will clearly be able to modify or appropriately change and combine the product described herein without departing from the content, spirit, and scope of this invention to realize and apply the technology of this invention.

Claims

1. A polybutene-based polymer vibration damping material modified with a film adhesive, characterized in that, include: A film adhesive and a polybutene polymer, wherein the mass ratio of the film adhesive to the polybutene polymer is (1-3):(0.5-1); The film adhesive comprises an ethylene copolymer, a tackifier, a solvent, an emulsifier, a filler, a stabilizer, and water, wherein the mass ratio of the ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water is (1-2):(1-4):(1-5):(1-5):(1-8):(1-8):(30-50); The polybutene polymer includes a polybutene copolymer, a tackifier, a solvent, and a reinforcing agent, wherein the mass ratio of the polybutene copolymer, tackifier, solvent, and reinforcing agent is (1-6):(1-2):(5-10):(15-22).

2. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The ethylene copolymer is selected from one or more of EVA, EVAL, EEA, EAA, AES, EVOH, and POE.

3. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The tackifier is selected from two or more of the following: rosin, α-terpene resin, C5 petroleum resin, maleic acid rosin, β-terpene resin, terpene phenolic resin, and C9 petroleum resin.

4. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The solvent is selected from two or more of ethyl acetate, butyl acetate, toluene, xylene, alcohol, dipentene, trichloroethylene, and carbon tetrachloride; or the solvent is selected from two or more of 120# gasoline, naphtha, residual solvent oil, 120# rubber solvent oil, 120# petroleum hydrocarbon solvent oil, aliphatic hydrocarbon solvent oil, 30 petroleum ether, and 93# unleaded gasoline.

5. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The emulsifier is selected from one or more of alkylphenol polyoxyethylene ether, linear alkylbenzene sulfonate sodium, glyceryl stearate monoester, sodium lauryl sulfate, nonylphenol polyoxyethylene ether, and Pingpingjia O.

6. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The filler is selected from two or more of microcline, feldspar, apatite, tremolite, diopside, and calcite.

7. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The stabilizer is selected from two or more of the following: dolomite, brucite, aluminic acid monohydrate, calcined magnesia, bauxite, diaspore, and lamp powder.

8. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The polybutene copolymer is selected from one or more of butyl rubber, cis-butadiene rubber, nitrile rubber, styrene-butadiene rubber, chloroprene rubber, and polyisobutylene.

9. The polybutene-based polymer vibration damping material modified with a film adhesive according to claim 1, characterized in that, The reinforcing agent is selected from two or more of the following: quartz, chalcedony, calcite, hydromica, kaolinite, glauconite, yellow phosphorus, and red phosphorus.

10. A method for preparing a polybutene-based polymer vibration damping material modified with a thin-film adhesive as described in any one of claims 1 to 9, characterized in that, Includes the following steps: An ethylene copolymer, tackifier, solvent, emulsifier, filler, stabilizer, and water are mixed evenly at room temperature to obtain a film adhesive. A polybutene copolymer is dissolved in a solvent, and the dissolved polybutene copolymer, tackifier, and reinforcing agent are mixed evenly at room temperature to obtain a polybutene polymer. The film adhesive and polybutene polymer are mixed and stirred evenly, then allowed to stand for 10-15 minutes to remove excess solvent and water, and then heated to 100-130℃ to obtain the finished product.

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