Degradable wear-resistant PBS ecological integrated wallboard material and preparation method thereof

Abstract

The application discloses a degradable wear-resistant PBS ecological integrated wallboard material and a preparation method thereof, and belongs to the field of high polymer composite materials. The degradable wear-resistant PBS ecological integrated wallboard material is prepared by modifying lignin fibers and oyster shell powder with hydrochloric acid dopamine and a silane coupling agent respectively, then compounding modified lignin fibers and modified oyster shell powder to prepare a wear-resistant additive, and adding the wear-resistant additive in a PBS melting process for blending, so that the biodegradation performance of the PBS matrix is effectively improved, and the wear resistance of the PBS matrix is further improved, thereby obtaining a novel ecological integrated wallboard material. The degradable wear-resistant ecological integrated wallboard material has a high biodegradation efficiency, low wear rate and abrasion amount, and a convenient and environment-friendly recycling mode. Moreover, the preparation process is simple, and the application can provide an innovative path for the preparation of the ecological and environment-friendly integrated wallboard.

Description

Technical Field

[0001] This invention belongs to the field of polymer composite materials, specifically relating to a biodegradable and wear-resistant PBS eco-integrated wall panel material and its preparation method. Background Technology

[0002] "Eco-integrated wall panels" are a new type of wall decoration material, with integration and ecology as their core features. They typically employ a modular design, integrating multiple functions such as structure, insulation, sound insulation, and decoration, and are installed conveniently via snap-fit ​​methods. Eco-integrated wall panels emphasize the use of natural, renewable, or recyclable materials, striving for low pollution and low energy consumption in the production process. They are mainly used in scenarios with requirements for environmental protection, efficiency, or specific functions, such as interior decoration, building envelope, and renovation.

[0003] Biodegradable materials often lack sufficient hardness and abrasion resistance, necessitating enhancement of surface properties. Traditional abrasion-enhancing methods for wall panel materials have limitations: excessive addition of inorganic rigid particles can impair toughness and biodegradability; mineral fibers are costly and reduce the material's degradation rate; and single biomass fillers exhibit weak interfacial bonding and low enhancement efficiency. Therefore, although eco-friendly integrated wall panels are favored for their environmental friendliness and ease of installation, ensuring their stability throughout their service life and controllable degradation after disposal remains a real challenge. Summary of the Invention

[0004] The purpose of this invention is to provide a biodegradable and wear-resistant PBS eco-integrated wall panel material and its preparation method. The method involves adding specific wear-resistant additives during the melting process of PBS for blending, thereby improving the biodegradability of the polymer matrix and further enhancing its wear resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A biodegradable and wear-resistant PBS eco-integrated wall panel material, the preparation method of which includes the following steps: (1) The lignin fibers were dispersed in Tris-HCl buffer, and dopamine hydrochloride was added for ultrasonic dispersion. Then, the mixture was heated and stirred for reaction, and then washed and dried to obtain modified lignin fibers (LF@PDA). (2) Disperse the silane coupling agent KH560 in an ethanol solution by ultrasonication, then add oyster shell powder and adjust the pH to 9. Then heat and stir the reaction, and then wash and dry to obtain modified oyster shell powder (OSP@KH560). (3) The modified lignin fiber LF@PDA obtained in step (1) is redispersed in Tris-HCl buffer, and then the modified oyster shell powder OSP@KH560 obtained in step (2) is added for ultrasonic dispersion, followed by heating and stirring reaction, and then washing and drying to obtain wear-resistant additive (LF-PDA-OSP). (4) Polybutylene succinate (PBS) and the wear-resistant additive (LF-PDA-OSP) obtained in step (3) are melt-blended in a torque rheometer to obtain a biodegradable wear-resistant PBS blend. The biodegradable wear-resistant PBS blend is then hot-pressed and cold-pressed to obtain the biodegradable wear-resistant PBS eco-integrated wall panel material.

[0006] Furthermore, the amount of dopamine hydrochloride added in step (1) is 15% of the mass of the lignin fiber.

[0007] Furthermore, the concentration of the ethanol solution in step (2) is 95 wt%.

[0008] Furthermore, the amount of silane coupling agent KH560 used in step (2) is 5% of the mass of oyster shell powder.

[0009] Furthermore, the oyster shell powder mentioned in step (2) needs to be passed through a 300-mesh sieve.

[0010] Furthermore, the pH value of the Tris-HCl buffer solution mentioned in steps (1) and (3) is 8.5.

[0011] Furthermore, the mass ratio of modified lignin fiber to modified oyster shell powder used in step (3) is 5:1.

[0012] Furthermore, the ultrasonic dispersion time in steps (1) to (3) is 45 min.

[0013] Furthermore, the heating and stirring reaction in steps (1) to (3) is carried out at a temperature of 50°C, a stirring rate of 30 r / min, and a stirring time of 12 h.

[0014] Furthermore, the drying temperature in steps (1) to (3) is 60°C and the drying time is 24 hours.

[0015] Further, the mass percentage ratio of polybutylene succinate to wear-resistant additive used in step (4) is (80-95):(5-20).

[0016] Furthermore, the temperature of the melt blending reaction in step (4) is 135°C, the rotor speed is 60 r / min, and the time is 10 min.

[0017] Furthermore, the hot pressing melting temperature in step (4) is 135°C, the pressure is 10 MPa, and the time is 10 min.

[0018] Furthermore, the cold pressing temperature in step (4) is room temperature, the pressure is 10 MPa, and the time is 10 min.

[0019] This invention utilizes a series of biodegradable raw materials to prepare biodegradable and wear-resistant PBS eco-integrated wall panel materials through melt blending, significantly improving the polymer's biodegradation rate and wear resistance. The beneficial effects of this invention are as follows: (1) This invention uses PBS, lignin fiber, and oyster shells as raw materials, and dopamine hydrochloride and KH560 as modifiers. A multi-level structure wear-resistant additive is prepared using the biomimetic adhesion and chemical bonding effects of PDA. Ecological integrated wall panel materials are efficiently prepared through melt blending and cold pressing. The raw materials are environmentally friendly and renewable, and can be recycled through composting or biodegradation. The process is simple and efficient, the formula is scientifically sound, and the recycling process is green and environmentally friendly. This solves the practical problem of traditional ecological integrated wall panels struggling to balance durability and degradability, and has significant industrial application value and good socio-economic benefits.

[0020] (2) In this invention, dopamine hydrochloride is used to modify lignin fibers so that dopamine hydrochloride can self-polymerize on the surface of lignin fibers to form a strong and uniform nanoscale PDA coating. This coating can form hydrogen bonds / π-π stacking with the phenolic hydroxyl groups of lignin fibers and provide active sites for subsequent reactions, which greatly improves interfacial compatibility and bonding strength.

[0021] (3) In this invention, silane coupling agent KH560 is used to modify oyster shells. Its epoxy group can not only react with the amino group of PDA to form CN or COC chemical bonds, but also the silanol generated after the hydrolysis of its siloxane can form Si-O-Si / C covalent bonds with the hydroxyl group on the surface of oyster shell powder. The other end of the long-chain alkane part (-(CH2)3-) is chemically similar to and compatible with the methylene chain of PBS, which can improve the compatibility with the resin matrix.

[0022] (4) This invention proposes a core-shell-bridge multi-level structure with "lignin fiber as the core, PDA as the bridge, and KH560 modified oyster shell powder as the shell" through a stepwise modification-in-situ assembly process to achieve microscopic interlocking between the filler and the matrix. Among them, lignin fiber, as a natural polyphenol polymer, has a three-dimensional network structure that can improve the overall rigidity and modulus, and its inherent polyphenol structure has a strong affinity with PDA, which is conducive to composite; oyster shell powder has high hardness and wear resistance, and its main component CaCO3 can be used as a nucleating agent for PBS to refine the crystal structure. By utilizing the universal adhesion of PDA and the chemical coupling of KH560, the dispersibility and interfacial adhesion of lignin fiber and oyster shell powder in PBS can be improved, and a strong and tough interface between "fiber-polymer-particle" can be constructed, thereby achieving a synergistic improvement in the wear resistance, mechanical strength and biodegradability of PBS, breaking through the bottleneck of PBS in high-performance applications. Attached Figure Description

[0023] Figure 1The image shows a SEM image of the wear-resistant additive LF-PDA-OSP prepared in Example 1.

[0024] Figure 2 The image shows the FTIR spectrum of the wear-resistant additive LF-PDA-OSP prepared in Example 1.

[0025] Figure 3 The image shows a tensile cross-section SEM image of the biodegradable and wear-resistant PBS eco-integrated wall panel material prepared in Example 1.

[0026] Figure 4 The image shows a bending cross-section SEM image of the biodegradable and wear-resistant PBS eco-integrated wall panel material prepared in Example 1. Detailed Implementation

[0027] A biodegradable and wear-resistant PBS eco-integrated wall panel material, the preparation method of which includes the following steps: (1) The lignin fibers were dispersed in Tris-HCl buffer (pH=8.5), and 15% of the lignin fiber mass of dopamine hydrochloride was added. After ultrasonic dispersion for 45 min, the mixture was heated and stirred at 50 °C and 30 r / min for 12 h. After washing, the mixture was dried at 60 °C for 24 h to obtain modified lignin fibers (LF@PDA). (2) 5% by weight of oyster shell powder was ultrasonically dispersed in a 95wt% ethanol solution for 45 min. Then, oyster shell powder that had been ground and passed through a 300-mesh sieve was added, and the pH was adjusted to 9. The mixture was then heated and stirred at 50℃ and a stirring rate of 30 r / min for 12 h. After washing, the mixture was dried at 60℃ for 24 h to obtain modified oyster shell powder (OSP@KH560). (3) The modified lignin fiber LF@PDA obtained in step (1) was redispersed in Tris-HCl buffer (pH=8.5), and then the modified oyster shell powder OSP@KH560 obtained in step (2) was added at a mass ratio of 5:1. The mixture was ultrasonically dispersed for 45 min, and then heated and stirred at 50 °C and a stirring rate of 30 r / min for 12 h. After washing, the mixture was vacuum dried at 60 °C for 24 h to obtain the wear-resistant additive (LF-PDA-OSP). (4) Polybutylene succinate (PBS) and the wear-resistant additive (LF-PDA-OSP) obtained in step (3) are added to a torque rheometer at a mass percentage ratio of (80-95):(5-20). The mixture is melt-blended at 135°C and 60 r / min for 10 min to obtain a biodegradable wear-resistant PBS blend. The biodegradable wear-resistant PBS blend is then hot-pressed and melted at 135°C and 10 MPa for 10 min, and then cold-pressed at room temperature and 10 MPa for 10 min to obtain a biodegradable wear-resistant PBS eco-integrated wall panel material.

[0028] To make the content of this invention easier to understand, the technical solution of this invention will be further described below with reference to specific embodiments, but this invention is not limited thereto.

[0029] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0030] The raw materials used in the example were: polybutylene succinate (99% purity), lignin fiber (96% purity), silane coupling agent KH560 (99% purity), and dopamine hydrochloride (99% purity). Before the experiment, each raw material was placed in a vacuum drying oven and dried at 60°C and 0MPa for 12 hours to remove the influence of moisture. Example 1

[0031] (1) The lignin fibers were dispersed in Tris-HCl buffer (pH=8.5), and 15% of the mass of the lignin fibers in dopamine hydrochloride was added. After ultrasonic dispersion for 45 min, the mixture was heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified lignin fibers LF@PDA. (2) 5% by weight of oyster shell powder was ultrasonically dispersed in a 95wt% ethanol solution for 45 min. Then, oyster shell powder that had been ground and passed through a 300-mesh sieve was added, and the pH was adjusted to 9. The mixture was then heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified oyster shell powder OSP@KH560. (3) The prepared LF@PDA was redispersed in Tris-HCl buffer (pH=8.5), and OSP@KH560 was added at a mass ratio of 5:1. After ultrasonic dispersion for 45 min, the reaction was heated at 50℃ and stirring rate of 30 r / min for 12 h. After centrifugation and washing, the product was vacuum dried at 60℃ for 24 h to obtain the wear-resistant additive LF-PDA-OSP. (4) By weight, 80 parts of polybutylene succinate (PBS) and 20 parts of wear-resistant additive LF-PDA-OSP were added to a torque rheometer and melt-blended for 10 min at a temperature of 135℃ and a rotor speed of 60 r / min to obtain a biodegradable wear-resistant PBS blend. The obtained biodegradable wear-resistant PBS blend was then hot-pressed and melted for 10 min at a temperature of 135℃ and a pressure of 10 MPa, and then cold-pressed for 10 min at a room temperature and a pressure of 10 MPa to obtain a biodegradable wear-resistant PBS eco-integrated wall panel material.

[0032] Figure 1 The image shows the SEM image of the prepared wear-resistant additive LF-PDA-OSP. As can be seen from the image, the oyster shell powder particles exhibit irregular polyhedral, sheet-like, or blocky morphologies and are widely distributed on the fiber surface. There is a clear adhesion interface between the oyster shell powder particles and the fiber surface, with no large-scale detachment observed. Fine white particles are still visible attached to some exposed fiber areas, which is the result of PDA forming a "bio-glue" on the fiber surface.

[0033] Figure 2 The image shows the FTIR spectrum of the prepared wear-resistant additive LF-PDA-OSP. The 2850 cm⁻¹ value is shown in the figure. -1 2925 cm -1 The peak at 880 cm⁻¹ represents the CH stretching vibration of lignin fibers. -1 1425 cm -1 The CO3 in the oyster shell powder itself 2- Vibration peak. In contrast, LF-PDA-OSP showed a peak at 1110 cm⁻¹. -1 With 1265 cm -1 A new characteristic peak appears at 1110 cm⁻¹. -1 The peak at 1265 cm⁻¹ represents the stretching vibration peak of Si-OC / Si-O-Si. -1 The peak at this point represents the CN stretching vibration of the PDA, indicating the successful grafting of KH560 and the PDA. Furthermore, the peak that should appear at 910 cm⁻¹ in the LF-PDA-OSP pattern... -1 The disappearance of the characteristic peak of the epoxy group at the point indicates that it may have undergone a ring-opening reaction with the amino or o-phenyl dihydroxy group on the PDA.

[0034] Figure 3 , Figure 4 SEM images of the tensile and bending sections of the prepared biodegradable and wear-resistant PBS eco-integrated wall panel material are shown. As can be seen from the images, in both the tensile and bending sections, the lignin fibers are uniformly coated with PBS, with some extracted pores in the fibers, which are relatively round and smooth. Simultaneously, in the tensile section image, some PBS fibers are observed around the fibers or the extracted pores, indicating that the interfacial compatibility between the fibers and the PBS matrix is ​​greatly improved under the dual effects of the physical bonding of PDA and the chemical cross-linking of KH560. In the bending section image, irregular blocky / sheet-like particles formed by the combination of PBS and wear-resistant additives can be seen, with these particles stacked and interlocked, exhibiting a dense but rough aggregated state. Example 2

[0035] By weight, in step (4), the amount of polybutylene succinate (PBS) is 85 parts and the amount of wear-resistant agent is 15 parts, and other operations are the same as in Example 1. Example 3

[0036] By weight, in step (4), the amount of polybutylene succinate (PBS) is 90 parts and the amount of wear-resistant agent is 10 parts, and other operations are the same as in Example 1. Example 4

[0037] By weight, in step (4), the amount of polybutylene succinate (PBS) is 95 parts and the amount of wear-resistant agent is 5 parts, and other operations are the same as in Example 1.

[0038] Comparative Example 1 By weight, 100 parts of polybutylene succinate (PBS) were added to a torque rheometer and melt-blended for 10 min at a temperature of 135°C and a rotor speed of 60 r / min to obtain pure PBS polymer. The obtained pure PBS polymer was then hot-pressed and melted at 135°C and a pressure of 10 MPa for 10 min, and then cold-pressed at room temperature and a pressure of 10 MPa for 10 min to obtain pure PBS eco-integrated wall panel material.

[0039] Comparative Example 2 (1) The lignin fibers were dispersed in Tris-HCl buffer (pH=8.5), and 15% of the mass of the lignin fibers in dopamine hydrochloride was added. After ultrasonic dispersion for 45 min, the mixture was heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified lignin fibers LF@PDA. (2) By weight, 95 parts of polybutylene succinate (PBS) and 5 parts of LF@PDA were added to a torque rheometer and melt-blended for 10 min at a temperature of 135℃ and a rotor speed of 60 r / min to obtain a PBS / LF@PDA blend. The obtained PBS / LF@PDA blend was then hot-pressed and melted for 10 min at a temperature of 135℃ and a pressure of 10 MPa, and then cold-pressed for 10 min at a room temperature and a pressure of 10 MPa to obtain the PBS / LF@PDA eco-integrated wall panel material.

[0040] Comparative Example 3 (1) 5% by weight of oyster shell powder was ultrasonically dispersed in a 95wt% ethanol solution for 45 min. Then, oyster shell powder that had been ground and passed through a 300-mesh sieve was added, and the pH was adjusted to 9. The mixture was then heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified oyster shell powder OSP@KH560. (2) By weight, 95 parts of polybutylene succinate (PBS) and 5 parts of OSP@KH560 were added to a torque rheometer and melt-blended for 10 min at a temperature of 135℃ and a rotor speed of 60 r / min to obtain a PBS / OSP@KH560 blend. The obtained PBS / OSP@KH560 blend was then hot-pressed and melted for 10 min at a temperature of 135℃ and a pressure of 10 MPa, and then cold-pressed for 10 min at a room temperature and a pressure of 10 MPa to obtain the PBS / OSP@KH560 eco-integrated wall panel material.

[0041] Comparative Example 4 (1) The lignin fibers were dispersed in Tris-HCl buffer (pH=8.5), and 15% of the mass of the lignin fibers in dopamine hydrochloride was added. After ultrasonic dispersion for 45 min, the mixture was heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified lignin fibers LF@PDA. (2) 5% by weight of oyster shell powder was ultrasonically dispersed in a 95wt% ethanol solution for 45 min. Then, oyster shell powder that had been ground and passed through a 300-mesh sieve was added, and the pH was adjusted to 9. The mixture was then heated and reacted at 50℃ and 30 r / min for 12 h. After centrifugation and washing, the mixture was vacuum dried at 60℃ for 24 h to obtain modified oyster shell powder OSP@KH560. (3) By weight, 5 parts of modified lignin fiber LF@PDA and 1 part of modified oyster shell powder OSP@KH560 were mixed in a high-speed mixer for 30 min to obtain modified lignin fiber / modified oyster shell powder blended powder LF@PDA@OSP; (4) By weight, 95 parts of polybutylene succinate (PBS) and 5 parts of LF@PDA@OSP were added to a torque rheometer and melt-blended for 10 min at a temperature of 135℃ and a rotor speed of 60 r / min to obtain a PBS / LF@PDA@OSP blend. The obtained PBS / LF@PDA@OSP blend was then hot-pressed and melted for 10 min at a temperature of 135℃ and a pressure of 10 MPa, and then cold-pressed for 10 min at a room temperature and a pressure of 10 MPa to obtain the PBS / LF@PDA@OSP eco-integrated wall panel material.

[0042] Performance testing: Density was tested using ρ = m / ΔV, where ΔV is the volume change obtained by immersing the sample in a graduated cylinder; water absorption was determined according to GB / T1034-2008 Water Absorption of Plastics; DIN abrasion was determined according to GB / T 9867-2008 Abrasion Resistance of Plastics; Flexural strength was determined according to GB / T 9341-2008 Flexural Properties of Plastics; Degradation performance was determined according to the weight loss rate of ASTM D5526-1994(2002). W(%) Weight loss is an indicator for measuring the mass loss of materials or products under specific environmental conditions, reflecting the biodegradation efficiency of polymer materials in soil over time. The composite material samples obtained in the examples and comparative examples were tested for weight loss according to ASTM D5526-1994 (2002). Specifically, the composite material was molded and cut into 20×20×0.1 mm film samples, weighed W0, and buried 15 cm deep in the soil to allow for natural degradation. After 20 days, the samples were removed, cleaned with distilled water and ethanol, and dried in a vacuum oven at 60°C for 12 hours. Their weight W was then measured. t According to the formula Calculate the weight loss rate of the material.

[0043] The test results are shown in Table 1.

[0044] Table 1 Performance test results of eco-friendly integrated wall panel material samples

[0045] As can be seen from the data comparison of Examples 1 to 4 in Table 1, the increase in the amount of wear-resistant additives can not only make the composite material obtain better bending strength and wear resistance, but also significantly accelerate the biodegradation efficiency. This is because lignin fiber and oyster shell powder are biodegradable fillers. The former has high stiffness and can effectively bear and transfer stress, thereby improving the bending modulus; while the latter, as rigid particles, is mainly composed of calcium carbonate, which has high hardness and can improve the material stiffness and wear resistance. In comparison, the biodegradation efficiency, flexural strength, and abrasion resistance of the pure PBS wall panel material prepared without abrasion-resistant additives in Comparative Example 1 were significantly weaker than those of the composite wall panel material prepared with abrasion-resistant additives in the Examples. The effects of adding modified lignin fibers or modified oyster shell powder to the composite material in Comparative Examples 2 and 3 were limited. As can be seen from Comparative Example 4, although the direct blending of the two modified fillers can improve the overall performance of the composite material to a certain extent, its effect is not as good as the composite material prepared by double grafting modification in the Examples. This is because the "bridging" effect of PDA can transform the hydrophilic surface into a highly active interface, while KH560 can achieve "coupling" through the reaction of epoxy groups with the amino / hydroxyl groups of PDA. Its synergistic effect combines the "skeleton support" of the fiber with the "dispersion reinforcement" of the particles, and through the strong interface, the stress energy can be efficiently transferred from the PBS matrix to the fibers and particles, thereby achieving a comprehensive reinforcement effect of jointly resisting bending deformation and achieving high strength and high modulus.

[0046] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included in the scope of the present invention.

Claims

1. A method for preparing a biodegradable and wear-resistant PBS eco-integrated wall panel material, characterized in that, Includes the following steps: (1) The lignin fibers were dispersed in Tris-HCl buffer, and dopamine hydrochloride was added for ultrasonic dispersion. Then, the mixture was heated and stirred for reaction, and then washed and dried to obtain modified lignin fibers. (2) Disperse the silane coupling agent KH560 in an ethanol solution by ultrasonication, then add oyster shell powder and adjust the pH to 9. Then heat and stir the reaction, and then wash and dry to obtain modified oyster shell powder. (3) The modified lignin fiber obtained in step (1) is redispersed in Tris-HCl buffer, and then the modified oyster shell powder obtained in step (2) is added for ultrasonic dispersion, followed by heating and stirring reaction, and then washed and dried to obtain wear-resistant additive; (4) Polybutylene succinate and the wear-resistant additive obtained in step (3) are melt-blended, and then the resulting blend is hot-pressed and cold-pressed to obtain the biodegradable wear-resistant PBS eco-integrated wall panel material.

2. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, In step (1), the amount of dopamine hydrochloride added is 15% of the mass of lignin fiber; the temperature of the heating and stirring reaction is 50°C, the stirring rate is 30 r / min, and the stirring time is 12 h.

3. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The concentration of the ethanol solution in step (2) is 95 wt%; the amount of the silane coupling agent KH560 is 5% of the mass of the oyster shell powder; the oyster shell powder needs to pass through a 300-mesh sieve; the temperature of the heating and stirring reaction is 50°C, the stirring rate is 30 r / min, and the stirring time is 12 h.

4. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The mass ratio of modified lignin fiber to modified oyster shell powder used in step (3) is 5:1; the temperature of the heating and stirring reaction is 50℃, the stirring rate is 30 r / min, and the stirring time is 12 h.

5. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The mass percentage ratio of polybutylene succinate to wear-resistant additive used in step (4) is (80-95):(5-20).

6. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The temperature of the melt blending reaction in step (4) is 135°C and the time is 10 min.

7. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The hot pressing melting temperature in step (4) is 135°C, the pressure is 10 MPa, and the time is 10 min.

8. The method for preparing the biodegradable and wear-resistant PBS eco-integrated wall panel material according to claim 1, characterized in that, The cold pressing process in step (4) is performed at room temperature, with a pressure of 10 MPa and a time of 10 min.

9. The biodegradable and wear-resistant PBS eco-integrated wall panel material prepared by the method according to any one of claims 1-8.

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