Full-component sustainable impact-resistant bio-based polymer mixture and preparation method thereof

Abstract

The present invention discloses a full-component sustainable impact-resistant bio-based polymer mixture and a preparation method thereof. The bio-based polymer mixture includes a bio-based tough epoxy polymer binder, aggregate and filler, wherein the three substances account for 4-8wt%, 88-92wt% and 4-6wt% of the mass percentage of the bio-based polymer mixture, respectively. The preparation method comprises the following steps: placing aggregates of various particle sizes in a mixing pot and stirring them so that the aggregates of different particle sizes are evenly mixed; placing the bio-based tough epoxy polymer binder in a mixing pot and continuing to stir it so that the bio-based tough epoxy polymer binder is wrapped around the aggregate in the form of a film; placing the filler in the mixing pot and continuing to stir it, and after the stirring is completed, the bio-based polymer mixture can be obtained. The bio-based polymer mixture prepared by the present invention can achieve the performance in terms of strength, toughness, high-temperature stability and volume stability, and has good impact resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of road engineering materials, and in particular relates to a full-component sustainable impact-resistant bio-based polymer mixture and a preparation method thereof. Background Art

[0002] With the continuous development of my country's air transportation, the carrying capacity of existing airport pavement materials is difficult to meet the requirements of the growing cargo load and passenger flow. There are mainly the following problems.

[0003] First, cement concrete is currently the primary material for airport pavements. Because cement concrete is a brittle material, the forces exerted on aircraft during takeoff and landing can be dozens of times greater than those under static loads. Under high strain rate loads, airport pavement panels are prone to breakage, voids, and cracking, which seriously impact flight safety and efficiency. To reduce damage to cement concrete under impact, current solutions focus on adding energy-absorbing and toughening materials like rubber particles and fibers to cement concrete to slow the development of cracks under high strain rates. However, in actual engineering, rubber particles, fibers, and other reinforcing materials are difficult to evenly disperse in cement concrete. Furthermore, these reinforcing materials are organic in nature, and the interface between these organic materials and inorganic materials like cement is weak, limiting improvements in the overall performance of airport pavements.

[0004] Secondly, while asphalt-mixed airport pavements offer advantages such as high toughness, comfort, and the ability to be constructed without stopping flights, the extreme heat of the engine exhaust during takeoff and landing causes the asphalt's strength to drop rapidly at high temperatures. This leads to severe deformation at the ends of the asphalt runway and in areas such as taxiing, waiting, and turning positions. This creates a significant wheel rutting problem, posing a serious threat to air traffic safety. To reduce this rutting problem, the current approach is to add a high-modulus agent to improve the asphalt mixture's deformation resistance at high temperatures. However, the composition and performance of asphalt vary significantly from source, and compatibility issues exist between asphalt and high-modulus agents, hindering the widespread application of this technology.

[0005] Secondly, polymer mixture is an emerging road or bridge deck paving material, mainly composed of stone, filler and polymer binder. Its performance is much higher than that of existing asphalt mixture, and it has gradually become a research hotspot. Compared with asphalt materials, polymer binders have clear components and a wide range of adjustable performance, which can be adjusted according to the needs of actual projects. However, existing polymer binders are mainly polyurethane materials. Since polyurethane mixtures contain -NCO groups, their curing is significantly affected by the temperature and humidity of the environment, making their retention time unstable. In environments with high humidity, they are also prone to foaming and bulging, which cannot meet the requirements of large-scale paving of airport pavements. It is still necessary to further find new polymer mixtures to meet the needs of airport pavements.

[0006] Finally, cement concrete, asphalt mixtures, and polymer mixtures all rely heavily on mineral and petroleum resources, making sustainable development difficult. Asphalt mixtures require further high-temperature mixing during the mixing and paving process, which not only consumes a lot of energy but also produces toxic gases, polluting the environment.

[0007] In summary, the main problems with the existing technology are that the various types of pavement materials currently used cannot have all the strength, toughness, high-temperature stability and volume stability, and have poor impact resistance. The raw materials are completely dependent on non-renewable resources such as petroleum and stone. Therefore, the development of a full-component sustainable impact-resistant bio-based polymer mixture and its preparation method has become an urgent need in this field.

[0008] Patent application publication number CN108491566A discloses a method for designing the mix ratio of a macroporous polymer mixture. The mixture comprises aggregate and an adhesive, the adhesive comprising at least an isocyanate-containing urethane prepolymer. The design method includes the following steps: designing the aggregate gradation for the mixture; preliminarily determining the range of the polymer adhesive dosage; forming and curing Marshall specimens; testing the volumetric indicators of the mixture and the specimens, calculating the void ratio, and re-determining the adhesive dosage range; performing performance testing on the mixture specimens formed and cured within the adhesive dosage range determined by the above method; and determining the optimal adhesive dosage. The polymer mixture prepared using this technical solution exhibits excellent road performance, drainage, and noise reduction properties, but has poor impact resistance, making it suitable only for ordinary road paving and not for airport pavement. Summary of the Invention

[0009] In order to solve the problems existing in the prior art, the present invention provides a full-component sustainable impact-resistant bio-based polymer mixture, including a bio-based tough epoxy polymer binder, aggregate and filler. The mass percentage of each substance in the full-component sustainable impact-resistant bio-based polymer mixture is: the bio-based tough epoxy polymer binder accounts for 4-8wt%, the aggregate accounts for 88-92wt%, and the filler accounts for 4-6wt%.

[0010] Preferably, the bio-based toughened epoxy polymer binder includes epoxy resin, curing agent, biomass toughening agent, biomass curing accelerator and silane coupling agent, and the mass percentage of each substance in the bio-based toughened epoxy polymer binder is: the epoxy resin accounts for 47-58wt%, the curing agent accounts for 19-23wt%, the biomass toughening agent accounts for 5-23wt%, the biomass curing accelerator accounts for 9-12wt%, and the silane coupling agent accounts for 1-2wt%.

[0011] The ratio of the mass of the epoxy resin to the sum of the mass of the curing agent and the biomass curing accelerator is 5:2.4-3.75; the ratio of the sum of the mass of the epoxy resin, the curing agent and the biomass curing accelerator to the mass of the biomass toughening agent is 10:0.5-3.5.

[0012] In any of the above schemes, it is preferred that the epoxy resin is compounded by bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, and the mass percentage of each substance in the epoxy resin is: 60-80wt% of bisphenol A diglycidyl ether, 10-20wt% of 1,4-butanediol glycidyl ether, and 10-20wt% of lauryl alcohol glycidyl ether.

[0013] The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidyloxypropyltrimethoxysilane.

[0014] In any of the above schemes, it is preferred that the aggregate includes limestone and recycled concrete aggregate, and the mass percentage of each substance in the aggregate is: the limestone accounts for 80-90wt% and the recycled concrete aggregate accounts for 10-20wt%; the limestone is natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings.

[0015] In any of the above schemes, it is preferred that the limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

[0016] The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

[0017] In any of the above solutions, it is preferred that the filler is recycled concrete fine powder with a particle size of less than 0.075 mm, and the recycled concrete fine powder is dust generated during the crushing process of reinforced concrete buildings.

[0018] The present invention also provides a method for preparing a full-component sustainable impact-resistant bio-based polymer mixture, which is used to prepare any of the above-mentioned full-component sustainable impact-resistant bio-based polymer mixtures, and comprises the following steps in order: Step 1: weighing a bio-based toughened epoxy polymer binder, limestone aggregates of various particle sizes, recycled concrete aggregates of various particle sizes, and fillers according to design requirements;

[0019] Step 2: Put limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes into a mixing pot at the same time and stir them to make the aggregates of different particle sizes evenly mixed;

[0020] Step 3: Add the bio-based toughened epoxy polymer binder into the mixing pot and continue stirring until the bio-based toughened epoxy polymer binder is wrapped around the aggregate in the form of a film;

[0021] Step 4: Place the filler into the mixing pot and continue stirring. After the stirring is completed, a full-component sustainable impact-resistant bio-based polymer mixture can be obtained.

[0022] Preferably, in step 1, the method for preparing the bio-based toughened epoxy polymer binder comprises the following steps in order:

[0023] Step (1): weigh all raw materials according to design requirements;

[0024] Step (2): first, 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether are placed in a container at the same time and stirred, and then bisphenol A diglycidyl ether is placed in the container and stirred continuously. After the stirring is completed, the epoxy resin can be obtained;

[0025] Step (3): firstly, a portion of the epoxy resin and the silane coupling agent are placed in a container and stirred simultaneously, and then the remaining portion of the epoxy resin is placed in the container and stirred continuously to form a mixture of the epoxy resin and the silane coupling agent;

[0026] Step (4): placing a curing agent and a biomass curing accelerator into a container and stirring them to form a mixture of the curing agent and the biomass curing accelerator;

[0027] Step (5): placing a mixture of epoxy resin and silane coupling agent, and a mixture of curing agent and biomass curing accelerator into a container at the same time and stirring them so that the components are evenly stirred without stratification, thereby forming a mixture of the four substances;

[0028] Step (6): Add the biomass toughening agent into the mixture of the four substances and stir them to ensure that the components are evenly stirred and there is no stratification phenomenon, thereby obtaining a bio-based toughened epoxy polymer binder.

[0029] In any of the above schemes, it is preferred that in step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 4-6 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 4-6 minutes; in step (3), the first part of the epoxy resin added is 50-65% of the total amount of the epoxy resin, and the remaining part of the epoxy resin added later is 35-50% of the total amount of the epoxy resin, and the stirring temperature of the part of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 1-2min, after adding the remaining part of the epoxy resin, the stirring temperature is room temperature and the stirring time is 1-2min; in step (4), the stirring temperature of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 4-6min; in step (5), the stirring temperature of the mixture of the epoxy resin and the silane coupling agent, and the mixture of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 3-6min; in step (6), the stirring temperature of the mixture of the biomass toughening agent and the four substances is room temperature and the stirring time is 2-4min.

[0030] In any of the above schemes, it is preferred that in step 2, the mixing temperature of limestone aggregate of various particle sizes and recycled concrete aggregate of various particle sizes is room temperature, and the mixing time is 90-120s; in step 3, the stirring temperature after adding the bio-based toughened epoxy polymer binder is room temperature, and the stirring time is 90-120s; in step 4, the stirring temperature after adding the filler is room temperature, and the stirring time is 90-120s.

[0031] In the present invention, the particle size is 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm, 0-0.075mm, that is, 13.2mm≤particle size<16mm, 9.5mm ≤particle size<13.2mm、4.75mm≤particle size<9.5mm、2.36mm≤particle size<4.75mm、1.18mm≤particle size<2.36mm、0.6mm≤particle size<1.18mm、0.3mm≤particle size<0.6mm、0.15mm≤particle size<0.3mm、0.075mm≤particle size<0.15mm、0mm≤particle size<0.075mm。For each particle size range, the material obtained by passing the upper and lower sieve holes in sequence has a particle size between the upper and lower sieve holes, for example: particle size 1.18-2.36mm (1.18mm≤particle size<2.36mm), that is, the material obtained by passing the material through the 2.36mm sieve hole and the 1.18mm sieve hole in sequence has a particle size between 1.18-2.36mm.

[0032] In the present invention, the sustainability of all components is explained as follows: the final bio-based polymer mixture contains three major components: a bio-based toughened epoxy polymer binder, aggregates, and fillers, all of which use renewable materials. The bio-based toughened epoxy polymer binder contains a portion of biomass materials (such as castor oil and cardanol) and a portion of petroleum-based materials (i.e., conventional chemical products), but does not contain asphalt. The biomass materials are renewable materials; the aggregate contains a portion of recycled concrete aggregate (i.e., construction waste generated by the demolition of reinforced concrete buildings) and a portion of limestone (i.e., natural stone). The recycled concrete aggregate is a renewable material; the filler is entirely recycled concrete fine powder and does not contain mineral powder. The recycled concrete fine powder is dust generated during the crushing process of reinforced concrete buildings and is a renewable material.

[0033] The full-component sustainable impact-resistant bio-based polymer mixture and preparation method thereof of the present invention have the following beneficial effects:

[0034] (1) The bio-based tough epoxy polymer binder system selected by the present invention mainly utilizes the ring-opening reaction of epoxy groups and amine groups to achieve room temperature curing of the binder system. Since the ring-opening reaction of epoxy groups and amine groups does not require the participation of moisture in the air, the bio-based polymer mixture prepared by the present invention is less affected by environmental humidity during the curing process compared with existing polyurethane polymer mixtures, making it easier to control the construction retention time and improve construction efficiency. When the bio-based tough epoxy polymer binder system selected by the present invention is damp, the moisture in the air reacts with groups such as epoxy groups and amine groups without producing carbon dioxide, which directly avoids the problem of bulging of the polyurethane mixture due to moisture, allowing the material to be paved on large areas of airport pavements.

[0035] Polyurethane mixtures offer the best performance in the existing technology. However, polyurethane requires moisture during the curing process. The higher the humidity and the higher the temperature, the faster the curing speed. However, since the humidity and temperature in the environment cannot be controlled during actual construction, it is difficult to predict the curing time of polyurethane mixtures. Too short a curing time will make the mixture difficult to compact, while too long a curing time will cause traffic delays. Furthermore, the curing of polyurethane in a humid environment will also produce carbon dioxide. The production of carbon dioxide gas will cause the mixture to expand, ultimately leading to bulging, posing a serious threat to air traffic safety.

[0036] (2) The present invention uses polyetheramine as a flexible curing agent for epoxy resin, uses biomass material cardanol as a room temperature curing accelerator for epoxy resin, an epoxy component with long-chain aliphatic hydrocarbons as an active diluent and toughening agent for epoxy resin, and castor oil with a branched structure as a biomass toughening agent. After all the components are mixed, the epoxy resin undergoes a ring-opening reaction with the polyetheramine under the promotion of cardanol, and continuously crosslinks and solidifies. The rigid group structure in the molecular chain provides strength and high-temperature deformation resistance for the polymer mixture; the castor oil component does not participate in the reaction during the crosslinking process of the epoxy, but is interspersed in the molecular chain, expanding the spacing between the molecular chains and improving the mobility of the molecular chain. In addition, the ether bonds and long-chain alkanes in the molecular chain make the cured bio-based polymer mixture have a certain toughness. At the same time, under the action of impact, the branched structure can provide more force transmission points, so that the strength of the prepared mixture is similar to that of ultra-high-strength concrete, changing the situation where concrete materials and asphalt materials cannot have both toughness and strength.

[0037] (3) A large amount of sustainable recycled materials are used in the three components of filler, aggregate and binder. Among them, the proportion of biomass components (castor oil, cardanol) in the binder is 12-35%, the proportion of recycled concrete micropowder in the filler is 100%, and the proportion of recycled concrete aggregate in the aggregate is 10-20%, which greatly reduces the dependence of road engineering materials on non-renewable resources such as petroleum, stone, and mineral powder.

[0038] (4) The polymer raw materials selected in the present invention are all low molecular weight polymer monomers, which are liquid at room temperature and do not need to be heated during use. They can be directly mixed with aggregates, which directly reduces the energy loss and pollution emissions of the mixture during the production process. Asphalt is solid at room temperature and needs to be heated at high temperature when used, which will produce harmful substances.

[0039] (5) The bio-based polymer mixture prepared by the present invention can achieve the properties of strength, toughness, high temperature stability and volume stability, and has good impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A photo of a bio-based polymer mixture prepared according to a preferred embodiment of the full-component sustainable impact-resistant bio-based polymer mixture of the present invention;

[0041] Figure 2 for Figure 1 Actual photos of the bio-based toughened epoxy polymer binder prepared in the examples shown;

[0042] Figure 3 The following are photos of the impact compression test process of four embodiments, wherein: (a) is the impact compression test of embodiment 1, (b) is the impact compression test of embodiment 2, (c) is the impact compression test of embodiment 3, and (d) is the impact compression test of embodiment 4. DETAILED DESCRIPTION

[0043] In order to further understand the content of the present invention, the present invention will be described in detail below with reference to specific embodiments.

[0044] Example 1:

[0045] According to a preferred embodiment of the full-component sustainable impact-resistant bio-based polymer mixture of the present invention, it includes a bio-based tough epoxy polymer binder, aggregates and fillers. The mass percentage of each substance in the full-component sustainable impact-resistant bio-based polymer mixture is: the bio-based tough epoxy polymer binder accounts for 6wt%, the aggregate accounts for 90wt%, and the filler accounts for 4wt%.

[0046] The bio-based toughened epoxy polymer binder includes an epoxy resin, a curing agent, a biomass toughening agent, a biomass curing accelerator, and a silane coupling agent. The weight percentage of each substance in the bio-based toughened epoxy polymer binder is 52wt% of the epoxy resin, 21wt% of the curing agent, 14wt% of the biomass toughening agent, 11wt% of the biomass curing accelerator, and 2wt% of the silane coupling agent. The ratio of the mass of the epoxy resin to the sum of the mass of the curing agent and the biomass curing accelerator is 5:3.07, which is within the range of 5:2.4-3.75. The ratio of the sum of the mass of the epoxy resin, the curing agent, and the biomass curing accelerator to the mass of the biomass toughening agent is 10:1.67, which is within the range of 10:0.5-3.5.

[0047] The epoxy resin is compounded from bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, with the weight percentage of each substance in the epoxy resin being 70% by weight of bisphenol A diglycidyl ether, 15% by weight of 1,4-butanediol glycidyl ether, and 15% by weight of lauryl alcohol glycidyl ether. The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidoxypropyltrimethoxysilane.

[0048] The aggregate includes limestone and recycled concrete aggregate, and the mass percentage of each substance in the aggregate is: the limestone accounts for 85wt% and the recycled concrete aggregate accounts for 15wt%; the limestone is natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings.

[0049] The limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

[0050] The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

[0051] The filler is concrete recycled fine powder with a particle size of less than 0.075 mm, and the concrete recycled fine powder is dust generated during the crushing process of reinforced concrete buildings.

[0052] This embodiment also provides a method for preparing a full-component sustainable impact-resistant bio-based polymer mixture, which is used to prepare the above-mentioned full-component sustainable impact-resistant bio-based polymer mixture, and includes the following steps in order:

[0053] Step 1: Weigh the bio-based toughened epoxy polymer binder, limestone aggregates of various particle sizes, recycled concrete aggregates of various particle sizes, and fillers according to the design requirements;

[0054] Step 2: Put limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes into a mixing pot at the same time and stir them to make the aggregates of different particle sizes evenly mixed;

[0055] Step 3: Add the bio-based toughened epoxy polymer binder into the mixing pot and continue stirring until the bio-based toughened epoxy polymer binder is wrapped around the aggregate in the form of a film;

[0056] Step 4: Place the filler into the mixing pot and continue stirring. After the stirring is completed, a full-component sustainable impact-resistant bio-based polymer mixture can be obtained.

[0057] In step 1, the method for preparing the bio-based toughened epoxy polymer binder comprises the following steps in order:

[0058] Step (1): weigh all raw materials according to design requirements;

[0059] Step (2): first, 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether are placed in a container at the same time and stirred, and then bisphenol A diglycidyl ether is placed in the container and stirred continuously. After the stirring is completed, the epoxy resin can be obtained;

[0060] Step (3): firstly, a portion of the epoxy resin and the silane coupling agent are placed in a container and stirred simultaneously, and then the remaining portion of the epoxy resin is placed in the container and stirred continuously to form a mixture of the epoxy resin and the silane coupling agent;

[0061] Step (4): placing a curing agent and a biomass curing accelerator into a container and stirring them to form a mixture of the curing agent and the biomass curing accelerator;

[0062] Step (5): placing a mixture of epoxy resin and silane coupling agent, and a mixture of curing agent and biomass curing accelerator into a container at the same time and stirring them so that the components are evenly stirred without stratification, thereby forming a mixture of the four substances;

[0063] Step (6): Add the biomass toughening agent into the mixture of the four substances and stir them to ensure that the components are evenly stirred and there is no stratification phenomenon, thereby obtaining a bio-based toughened epoxy polymer binder.

[0064] In step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 5 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 5 minutes; in step (3), the first part of the epoxy resin added is 55% of the total amount of the epoxy resin, and the remaining part of the epoxy resin added later is 45% of the total amount of the epoxy resin, the stirring temperature of the part of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 1.5 minutes, and the stirring temperature after adding the remaining part of the epoxy resin is room temperature and the stirring time is 1.5 minutes; in step (4), the stirring temperature of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 5 minutes; in step (5), the stirring temperature of the mixture of the epoxy resin and the silane coupling agent and the mixture of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 4 minutes; in step (6), the stirring temperature of the mixture of the biomass toughening agent and the four substances is room temperature and the stirring time is 3 minutes.

[0065] In step 2, the mixing temperature of limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes is room temperature and the mixing time is 105s; in step 3, the mixing temperature after adding the bio-based tough epoxy polymer binder is room temperature and the mixing time is 105s; in step 4, the mixing temperature after adding the filler is room temperature and the mixing time is 105s.

[0066] In this embodiment, the prepared bio-based tough epoxy polymer binder is poured into a mold and then flattened with a transparent plastic plate on the mold. The actual photo of the prepared bio-based tough epoxy polymer binder is shown in FIG. Figure 2 As shown, from Figure 2It can be seen that there are no bubbles and bulges inside and outside the bio-based tough epoxy polymer binder, which lays the foundation for the subsequent preparation of bio-based polymer mixtures. If there are no bubbles and bulges inside and outside the bio-based tough epoxy polymer binder, then there will be no bubbles and bulges inside and outside the subsequently prepared bio-based polymer mixture, that is, the prepared bio-based polymer mixture has good volume stability. The actual photo of the prepared full-component sustainable impact-resistant bio-based polymer mixture is shown in the figure. Figure 1 shown.

[0067] In this embodiment, the particle size is 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm, 0-0.075mm, that is, 13.2mm≤particle size<16mm, 9.5mm ≤particle size<13.2mm、4.75mm≤particle size<9.5mm、2.36mm≤particle size<4.75mm、1.18mm≤particle size<2.36mm、0.6mm≤particle size<1.18mm、0.3mm≤particle size<0.6mm、0.15mm≤particle size<0.3mm、0.075mm≤particle size<0.15mm、0mm≤particle size<0.075mm。For each particle size range, the material obtained by passing the upper and lower sieve holes in sequence has a particle size between the upper and lower sieve holes, for example: particle size 1.18-2.36mm (1.18mm≤particle size<2.36mm), that is, the material obtained by passing the material through the 2.36mm sieve hole and the 1.18mm sieve hole in sequence has a particle size between 1.18-2.36mm.

[0068] In this embodiment, the description of the sustainability of all components is as follows: the final prepared bio-based polymer mixture contains three major components, namely, bio-based toughened epoxy polymer binder, aggregate, and filler, all of which use renewable materials. The bio-based toughened epoxy polymer binder contains a portion of biomass materials (castor oil, cardanol), a portion of petroleum-based materials (conventional chemical products), and does not contain asphalt. The biomass materials are renewable materials; the aggregate contains a portion of recycled concrete aggregate (construction waste generated by the demolition of reinforced concrete buildings) and a portion of limestone (natural stone). The recycled concrete aggregate is a renewable material; the filler is entirely recycled concrete powder and does not contain mineral powder. The recycled concrete powder is dust generated during the crushing process of reinforced concrete buildings and is a renewable material.

[0069] The full-component sustainable impact-resistant bio-based polymer mixture of this embodiment and its preparation method have the following beneficial effects: (1) The selected bio-based tough epoxy polymer binder system mainly utilizes the ring-opening reaction of epoxy groups and amine groups to achieve room temperature curing of the binder system. Since the ring-opening reaction of epoxy groups and amine groups does not require the participation of moisture in the air, the prepared bio-based polymer mixture is less affected by the environmental humidity during the curing process; in addition, when the bio-based tough epoxy polymer binder system is damp, the moisture in the air reacts with groups such as epoxy groups and amine groups without producing carbon dioxide, thereby preventing the mixture from bulging due to moisture. (2) Polyetheramine is selected as the flexible curing agent of epoxy resin, biomass material cardanol is selected as the room temperature curing accelerator of epoxy resin, and biomass material castor oil is selected as the biomass toughening agent. After all the components are mixed, the epoxy resin reacts with the polyetheramine under the promotion of cardanol to undergo a ring-opening reaction, which continuously crosslinks and solidifies. The rigid group structure in the molecular chain provides the polymer mixture with strength and high-temperature deformation resistance. The castor oil component does not participate in the reaction during the epoxy crosslinking process, but is interspersed in the molecular chain, which expands the distance between the molecular chains and improves the mobility of the molecular chain. In addition, the ether bonds and long-chain alkanes in the molecular chain make the cured bio-based polymer mixture have a certain toughness. At the same time, under the impact, the branched structure can provide more force transmission points, making the strength of the prepared mixture similar to that of ultra-high-strength concrete, changing the situation where toughness and strength of the mixture cannot be achieved at the same time. (3) A large amount of sustainable recycled materials are used in the three components of filler, aggregate and binder, which greatly reduces the dependence of road engineering materials on non-renewable resources such as petroleum, stone, and mineral powder. (4) The selected polymer raw materials are all low-molecular-weight polymer monomers, which are liquid at room temperature and do not need to be heated during use. They can be directly mixed with aggregates for use, which directly reduces the energy loss and pollution emissions of the mixture during production. (5) The prepared bio-based polymer mixture has good properties in terms of strength, toughness, high temperature stability and volume stability, and has good impact resistance.

[0070] Example 2:

[0071] According to another preferred embodiment of the full-component sustainable impact-resistant bio-based polymer mixture and preparation method thereof of the present invention, the raw materials, process steps, technical principles and beneficial effects used are basically the same as those of the first embodiment, except that:

[0072] The full-component sustainable impact-resistant bio-based polymer mixture includes a bio-based tough epoxy polymer binder, aggregates and fillers. The mass percentage of each substance in the full-component sustainable impact-resistant bio-based polymer mixture is: the bio-based tough epoxy polymer binder accounts for 8wt%, the aggregate accounts for 88wt%, and the filler accounts for 4wt%.

[0073] The bio-based toughened epoxy polymer binder includes an epoxy resin, a curing agent, a biomass toughening agent, a biomass curing accelerator, and a silane coupling agent. The weight percentages of each substance in the bio-based toughened epoxy polymer binder are as follows: 47 wt% of the epoxy resin, 19 wt% of the curing agent, 23 wt% of the biomass toughening agent, 9 wt% of the biomass curing accelerator, and 2 wt% of the silane coupling agent. The ratio of the mass of the epoxy resin to the sum of the mass of the curing agent and the biomass curing accelerator is 5:2.98, which is within the range of 5:2.4-3.75. The ratio of the sum of the mass of the epoxy resin, the curing agent, and the biomass curing accelerator to the mass of the biomass toughening agent is 10:3.07, which is within the range of 10:0.5-3.5.

[0074] The epoxy resin is compounded from bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, with the weight percentage of each substance in the epoxy resin being 80% by weight of bisphenol A diglycidyl ether, 10% by weight of 1,4-butanediol glycidyl ether, and 10% by weight of lauryl alcohol glycidyl ether. The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidoxypropyltrimethoxysilane.

[0075] The aggregate includes limestone and recycled concrete aggregate, and the mass percentage of each substance in the aggregate is: the limestone accounts for 90wt% and the recycled concrete aggregate accounts for 10wt%; the limestone is natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings.

[0076] The limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

[0077] The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

[0078] The filler is concrete recycled fine powder with a particle size of less than 0.075 mm, and the concrete recycled fine powder is dust generated during the crushing process of reinforced concrete buildings.

[0079] In step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 6 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 6 minutes; in step (3), the first part of the epoxy resin added is 65% of the total amount of the epoxy resin, and the remaining part of the epoxy resin added later is 35% of the total amount of the epoxy resin, the stirring temperature of the part of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 2 minutes, and the stirring temperature after adding the remaining part of the epoxy resin is room temperature and the stirring time is 2 minutes; in step (4), the stirring temperature of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 6 minutes; in step (5), the stirring temperature of the mixture of the epoxy resin and the silane coupling agent and the mixture of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 6 minutes; in step (6), the stirring temperature of the mixture of the biomass toughening agent and the four substances is room temperature and the stirring time is 4 minutes.

[0080] In step 2, the mixing temperature of limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes is room temperature and the mixing time is 120s; in step 3, the mixing temperature after adding the bio-based tough epoxy polymer binder is room temperature and the mixing time is 120s; in step 4, the mixing temperature after adding the filler is room temperature and the mixing time is 120s.

[0081] Example 3:

[0082] According to another preferred embodiment of the full-component sustainable impact-resistant bio-based polymer mixture and preparation method thereof of the present invention, the raw materials, process steps, technical principles and beneficial effects used are basically the same as those of the first embodiment, except that:

[0083] The full-component sustainable impact-resistant bio-based polymer mixture includes a bio-based tough epoxy polymer binder, aggregates and fillers. The mass percentage of each substance in the full-component sustainable impact-resistant bio-based polymer mixture is: the bio-based tough epoxy polymer binder accounts for 4wt%, the aggregate accounts for 90wt%, and the filler accounts for 6wt%.

[0084] The bio-based toughened epoxy polymer binder includes an epoxy resin, a curing agent, a biomass toughening agent, a biomass curing accelerator, and a silane coupling agent. The weight percentages of each substance in the bio-based toughened epoxy polymer binder are as follows: 58 wt% of the epoxy resin, 23 wt% of the curing agent, 5 wt% of the biomass toughening agent, 12 wt% of the biomass curing accelerator, and 2 wt% of the silane coupling agent. The ratio of the epoxy resin to the sum of the curing agent and the biomass curing accelerator is 5:3.02, which is within the range of 5:2.4-3.75. The ratio of the sum of the epoxy resin, the curing agent, and the biomass curing accelerator to the biomass toughening agent is 10:0.54, which is within the range of 10:0.5-3.5.

[0085] The epoxy resin is compounded from bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, with the weight percentage of each substance in the epoxy resin being 60% by weight of bisphenol A diglycidyl ether, 20% by weight of 1,4-butanediol glycidyl ether, and 20% by weight of lauryl alcohol glycidyl ether. The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidoxypropyltrimethoxysilane.

[0086] The aggregate includes limestone and recycled concrete aggregate, and the mass percentage of each substance in the aggregate is: the limestone accounts for 80wt% and the recycled concrete aggregate accounts for 20wt%; the limestone is natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings.

[0087] The limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

[0088] The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

[0089] The filler is concrete recycled fine powder with a particle size of less than 0.075 mm, and the concrete recycled fine powder is dust generated during the crushing process of reinforced concrete buildings.

[0090] In step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 4 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 4 minutes; in step (3), the first part of the epoxy resin added is 50% of the total amount of the epoxy resin, and the remaining part of the epoxy resin added later is 50% of the total amount of the epoxy resin, the stirring temperature of the part of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 1 minute, and the stirring temperature after adding the remaining part of the epoxy resin is room temperature and the stirring time is 1 minute; in step (4), the stirring temperature of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 4 minutes; in step (5), the stirring temperature of the mixture of the epoxy resin and the silane coupling agent and the mixture of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 3 minutes; in step (6), the stirring temperature of the mixture of the biomass toughening agent and the four substances is room temperature and the stirring time is 2 minutes.

[0091] In step 2, the mixing temperature of limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes is room temperature and the mixing time is 90s; in step 3, the mixing temperature after adding the bio-based tough epoxy polymer binder is room temperature and the mixing time is 90s; in step 4, the mixing temperature after adding the filler is room temperature and the mixing time is 90s.

[0092] Example 4:

[0093] According to another preferred embodiment of the full-component sustainable impact-resistant bio-based polymer mixture and preparation method thereof of the present invention, the raw materials, process steps, technical principles and beneficial effects used are basically the same as those of the first embodiment, except that:

[0094] The full-component sustainable impact-resistant bio-based polymer mixture includes a bio-based tough epoxy polymer binder, aggregates and fillers. The mass percentage of each substance in the full-component sustainable impact-resistant bio-based polymer mixture is: the bio-based tough epoxy polymer binder accounts for 4wt%, the aggregate accounts for 92wt%, and the filler accounts for 4wt%.

[0095] The bio-based toughened epoxy polymer binder includes an epoxy resin, a curing agent, a biomass toughening agent, a biomass curing accelerator, and a silane coupling agent. The weight percentages of each substance in the bio-based toughened epoxy polymer binder are as follows: 55 wt% of the epoxy resin, 20 wt% of the curing agent, 14 wt% of the biomass toughening agent, 10 wt% of the biomass curing accelerator, and 1 wt% of the silane coupling agent. The weight ratio of the epoxy resin to the sum of the weights of the curing agent and the biomass curing accelerator is 5:2.73, which is within the range of 5:2.4-3.75. The weight ratio of the sum of the weights of the epoxy resin, the curing agent, and the biomass curing accelerator to the weight of the biomass toughening agent is 10:1.65, which is within the range of 10:0.5-3.5.

[0096] The epoxy resin is compounded from bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, with the weight percentage of each substance in the epoxy resin being 75% by weight of bisphenol A diglycidyl ether, 15% by weight of 1,4-butanediol glycidyl ether, and 10% by weight of lauryl alcohol glycidyl ether. The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidyloxypropyltrimethoxysilane.

[0097] The aggregate includes limestone and recycled concrete aggregate, and the mass percentage of each substance in the aggregate is: the limestone accounts for 80wt% and the recycled concrete aggregate accounts for 20wt%; the limestone is natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings.

[0098] The limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

[0099] The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

[0100] The filler is concrete recycled fine powder with a particle size of less than 0.075 mm, and the concrete recycled fine powder is dust generated during the crushing process of reinforced concrete buildings.

[0101] In step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 5 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 5 minutes; in step (3), the first part of the epoxy resin added is 50% of the total amount of the epoxy resin, and the remaining part of the epoxy resin added later is 50% of the total amount of the epoxy resin, the stirring temperature of the part of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 2 minutes, and the stirring temperature after adding the remaining part of the epoxy resin is room temperature and the stirring time is 2 minutes; in step (4), the stirring temperature of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 4 minutes; in step (5), the stirring temperature of the mixture of the epoxy resin and the silane coupling agent and the mixture of the curing agent and the biomass curing accelerator is room temperature and the stirring time is 5 minutes; in step (6), the stirring temperature of the mixture of the biomass toughening agent and the four substances is room temperature and the stirring time is 3 minutes.

[0102] In step 2, the mixing temperature of limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes is room temperature and the mixing time is 90s; in step 3, the mixing temperature after adding the bio-based tough epoxy polymer binder is room temperature and the mixing time is 90s; in step 4, the mixing temperature after adding the filler is room temperature and the mixing time is 90s.

[0103] The impact resistance and road performance tests of the full-component sustainable impact-resistant bio-based polymer mixtures prepared in the above four examples are as follows. The impact compression test of the mixture specimens was carried out using the Hopkinson pressure bar system. The test process is shown in the following photos. Figure 3 As shown, (a) is the impact compression test of Example 1, (b) is the impact compression test of Example 2, (c) is the impact compression test of Example 3, and (d) is the impact compression test of Example 4. The setting parameters of the Hopkinson pressure bar system are as follows: the bullet bar is a steel bar with a length of 600 mm and a diameter of 50 mm, the incident bar and the transmission bar are 2500 mm long and 50 mm in diameter, the density of the bar is 7.85 g / cm3, the wave velocity of the stress wave in the bar is 5100 m / s, the elastic modulus is 206 GPa, the Poisson's ratio of each bar is 0.26, and the adopted frequency of the stress wave is 0.1 MHz. The impact compression test was carried out at room temperature, the incident bar had an incident velocity of 5 m / s, the mixture specimen was cylindrical with a diameter of 50 mm and a height of 25 mm, and the impact resistance test results are shown in Table 1.

[0104] Table 1 Impact resistance test results of full-component sustainable impact-resistant bio-based polymer mixture

[0105]

[0106]

[0107] The splitting tensile strength of the mixture specimens was tested using the mixture splitting test, conducted at room temperature with a loading rate of 50 mm / min. The low-temperature bending strain of the mixture specimens was tested using the mixture low-temperature bending test, conducted at -10°C with a loading rate of 50 mm / min. The dynamic stability of the mixture specimens was tested using the mixture rutting test, conducted at 60°C. The test results of these road performance tests are shown in Table 2.

[0108] Table 2 Road performance test results of full-component sustainable impact-resistant bio-based polymer mixture

[0109]

[0110] It can be seen from Table 1 and Table 2 that the bio-based polymer mixture prepared in the above examples can achieve the desired properties in terms of strength, toughness, high-temperature stability, etc., and also has good impact resistance.

[0111] In the above examples, the raw materials, curing agent, biomass toughening agent, biomass curing accelerator, and silane coupling agent used to prepare the epoxy resin were purchased from Aladdin Reagent Co., Ltd. The recycled concrete aggregate and recycled concrete powder used were provided by Beijing Urban Green Source Environmental Protection Technology Co., Ltd. These were primarily sourced from construction waste generated by the demolition of reinforced concrete buildings within a 30-kilometer radius of the disposal site. This construction waste was crushed at the treatment plant to produce the recycled concrete aggregate and recycled concrete powder.

[0112] Special Note: The technical solution of this invention involves numerous parameters, and the synergistic effects between these parameters must be comprehensively considered to achieve the beneficial effects and significant improvements of this invention. Furthermore, the value ranges of each parameter in the technical solution were obtained through extensive testing. The inventors have recorded extensive experimental data for each parameter and their combinations. Due to space limitations, the specific experimental data will not be disclosed here.

[0113] Those skilled in the art will readily appreciate that the present invention's fully sustainable, impact-resistant bio-based polymer blend and its preparation method encompass any combination of the components described in the Summary and Detailed Description sections of the present invention specification, as well as the components illustrated in the accompanying drawings. Due to space limitations and for the sake of clarity, not all of the various solutions resulting from these combinations are described. Any modifications, equivalent substitutions, and improvements within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A full-component sustainable impact-resistant bio-based polymer mixture, characterized in that: The sustainable impact-resistant bio-based polymer mixture comprises a bio-based toughened epoxy polymer binder, an aggregate, and a filler, wherein the weight percentage of each substance in the whole component sustainable impact-resistant bio-based polymer mixture is as follows: the bio-based toughened epoxy polymer binder accounts for 4-8wt%, the aggregate accounts for 88-92wt%, and the filler accounts for 4-6wt%; The bio-based toughened epoxy polymer binder comprises an epoxy resin, a curing agent, a biomass toughening agent, a biomass curing accelerator and a silane coupling agent, wherein the mass percentage of each substance in the bio-based toughened epoxy polymer binder is as follows: the epoxy resin accounts for 47-58wt%, the curing agent accounts for 19-23wt%, the biomass toughening agent accounts for 5-23wt%, the biomass curing accelerator accounts for 9-12wt%, and the silane coupling agent accounts for 1-2wt%; The ratio of the mass of the epoxy resin to the sum of the mass of the curing agent and the biomass curing accelerator is 5:2.4-3.75; the ratio of the sum of the mass of the epoxy resin, the curing agent and the biomass curing accelerator to the mass of the biomass toughening agent is 10:0.5-3.5; The epoxy resin is prepared by compounding bisphenol A diglycidyl ether, 1,4-butanediol glycidyl ether, and lauryl alcohol glycidyl ether, wherein the mass percentage of each substance in the epoxy resin is as follows: 60-80wt% of bisphenol A diglycidyl ether, 10-20wt% of 1,4-butanediol glycidyl ether, and 10-20wt% of lauryl alcohol glycidyl ether; The curing agent is a polyetheramine with a molecular weight in the range of 180-230; the biomass toughening agent is castor oil; the biomass curing accelerator is cardanol; and the silane coupling agent is γ-glycidyloxypropyltrimethoxysilane; The aggregate comprises limestone and recycled concrete aggregate, with the weight percentage of each material in the aggregate being: 80-90 wt% of the limestone and 10-20 wt% of the recycled concrete aggregate; the limestone is a natural stone, and the recycled concrete aggregate is construction waste generated by the demolition of reinforced concrete buildings; The filler is concrete recycled fine powder with a particle size of less than 0.075 mm, and the concrete recycled fine powder is dust generated during the crushing process of reinforced concrete buildings.

2. The full-component sustainable impact-resistant bio-based polymer mixture according to claim 1, characterized in that: The limestone includes ten particle sizes, and the limestone with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively accounts for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the mass percentage of the limestone.

3. The full-component sustainable impact-resistant bio-based polymer mixture according to claim 2, characterized in that: The recycled concrete aggregate includes ten particle sizes, and the recycled concrete aggregates with particle sizes of 13.2-16mm, 9.5-13.2mm, 4.75-9.5mm, 2.36-4.75mm, 1.18-2.36mm, 0.6-1.18mm, 0.3-0.6mm, 0.15-0.3mm, 0.075-0.15mm and 0-0.075mm respectively account for 5wt%, 18.5wt%, 23.5wt%, 16wt%, 10.5wt%, 7.5wt%, 5.5wt%, 3.5wt%, 4wt% and 6wt% of the recycled concrete aggregate.

4. A method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to any one of claims 1 to 3, characterized in that: The following steps are included in the order given: Step 1: Weigh the bio-based toughened epoxy polymer binder, limestone aggregates of various particle sizes, recycled concrete aggregates of various particle sizes, and fillers according to the design requirements; Step 2: Put limestone aggregates of various particle sizes and recycled concrete aggregates of various particle sizes into a mixing pot at the same time and stir them to make the aggregates of different particle sizes evenly mixed; Step 3: Add the bio-based toughened epoxy polymer binder into the mixing pot and continue stirring until the bio-based toughened epoxy polymer binder is wrapped around the aggregate in the form of a film; Step 4: Place the filler into the mixing pot and continue stirring. After the stirring is completed, a full-component sustainable impact-resistant bio-based polymer mixture can be obtained.

5. The method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to claim 4, characterized in that: In step 1, the bio-based toughened epoxy polymer binder is prepared by the following steps: Step (1): Weigh all raw materials according to design requirements; Step (2): firstly, 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether are placed in a container at the same time and stirred, and then bisphenol A diglycidyl ether is placed in the container and stirred continuously. After the stirring is completed, the epoxy resin can be obtained; Step (3): firstly, a portion of the epoxy resin and the silane coupling agent are placed in a container at the same time and stirred, and then the remaining portion of the epoxy resin is placed in the container and stirred continuously to form a mixture of the epoxy resin and the silane coupling agent; Step (4): placing a curing agent and a biomass curing accelerator into a container at the same time and stirring them to form a mixture of the curing agent and the biomass curing accelerator; Step (5): placing the mixture of epoxy resin and silane coupling agent, and the mixture of curing agent and biomass curing accelerator into a container at the same time and stirring them so that the components are evenly stirred without stratification, thereby forming a mixture of the four substances; Step (6): Add the biomass toughening agent into the mixture of the four substances and stir them so that the components are evenly stirred and there is no stratification phenomenon, thereby obtaining a bio-based toughened epoxy polymer binder.

6. The method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to claim 5, characterized in that: In step (2), the stirring temperature of 1,4-butanediol glycidyl ether and lauryl alcohol glycidyl ether is room temperature and the stirring time is 4-6 minutes, and the stirring temperature after adding bisphenol A diglycidyl ether is room temperature and the stirring time is 4-6 minutes; In step (3), the first portion of the epoxy resin added is 50-65% of the total amount of the epoxy resin, and the remaining portion of the epoxy resin added is 35-50% of the total amount of the epoxy resin. The stirring temperature of the first portion of the epoxy resin and the silane coupling agent is room temperature and the stirring time is 1-2 minutes. The stirring temperature after adding the remaining portion of the epoxy resin is room temperature and the stirring time is 1-2 minutes. In step (4), the curing agent and the biomass curing accelerator are stirred at room temperature for 4-6 minutes; In step (5), the mixture of the epoxy resin and the silane coupling agent, and the mixture of the curing agent and the biomass curing accelerator are stirred at room temperature for 3-6 minutes; In step (6), the mixture of the biomass toughening agent and the four substances is stirred at room temperature for 2-4 minutes.

7. The method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to claim 6, characterized in that: In step 2, the mixing temperature of limestone aggregate of various particle sizes and recycled concrete aggregate of various particle sizes is room temperature and the mixing time is 90-120s.

8. The method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to claim 7, characterized in that: In step 3, the stirring temperature after adding the bio-based tough epoxy polymer binder is room temperature and the stirring time is 90-120s.

9. The method for preparing a full-component sustainable impact-resistant bio-based polymer mixture according to claim 8, characterized in that: In step 4, the stirring temperature after adding the filler is room temperature and the stirring time is 90-120s.

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