Bio-based two-component polyurethane pavement marking material, preparation method and application thereof

Abstract

The application belongs to the technical field of pavement marking paint, and particularly relates to a bio-based two-component polyurethane pavement marking material, a preparation method and application. The bio-based two-component polyurethane pavement marking material is prepared by matching the components in the A component and the B component. The A component comprises bio-based polyether polyol, bio-based polyester polyol, acrylic resin, bisphenol A epoxy resin, a catalyst, a film forming agent, a film forming aid, pigments and fillers. The B component comprises aliphatic isocyanate and a cosolvent. The bio-based two-component polyurethane pavement marking material can be used for pavement marking, especially, the film forming aid matched with the dipropylene glycol butyl ether film forming agent in the whole system can improve the film forming performance to some extent, and the performance such as toughness and adhesion is improved, especially, the film forming time is greatly improved, and the bio-based two-component polyurethane pavement marking material is more suitable for pavement marking in emergency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pavement marking paint, and particularly relates to a bio-based two-component polyurethane pavement marking material, a preparation method and application thereof. BACKGROUND

[0002] Road traffic marking plays an important indicating and warning role in people's daily life, is an indispensable information marking in modern life, and widely exists in different climate regions, so there are different requirements for the weather resistance and construction of road marking paint in different regions.

[0003] At present, common road marking paints on the market mainly include solvent type, hot melt type, two-component and water-based paints, wherein the solvent type paint has been gradually replaced by other paints due to serious pollution in the construction process. The two-component paint and the water-based paint have better environmental protection, but due to the long curing time and the great influence of weather during construction, they are not suitable for use in crowded road sections and humid climate regions. The hot melt type road marking paint has a relatively short drying time, and can reach complete curing within 3-5 minutes, but there is still a great obstacle in the operation under the conditions of many vehicles and traffic.

[0004] In addition, the current marking paint requires to be applied on a dry and clean road surface during construction, and if the road surface humidity is too large, it will seriously affect the adhesion of the road marking paint after film curing, and even affect the marking drying time and the appearance of the marking after construction. It is found in years of construction and market research that the marking construction has to be interrupted due to continuous rainy weather for several days. In addition, the marking has to withstand the rolling of vehicles, the high temperature of the bottom surface in summer and the low temperature of the bottom surface in winter, and the current marking often appears cracking, falling or deformation in summer and winter, and the marking has a short service life.

[0005] Therefore, there is an urgent need in the art to develop a road marking paint which can be cured in a short time to solve the problems existing in the current road marking paint. SUMMARY

[0006] The present application aims to provide a bio-based two-component polyurethane pavement marking material, which has higher adhesion and better application stability.

[0007] The second object of the present application is to provide a preparation method and application of the bio-based two-component polyurethane pavement marking material.

[0008] To achieve the above object, the present application provides the following technical scheme.

[0009] The first aspect of the present application discloses a bio-based two-component polyurethane pavement marking material, comprising independently packaged A component and B component; wherein,

[0010] The A component includes the following raw materials in parts by weight: bio-based polyether polyol 50-80 parts by weight, bio-based polyester polyol 80-100 parts by weight, acrylic resin 50-60 parts by weight, bisphenol A epoxy resin 60-80 parts by weight, catalyst 10-15 parts by weight, film forming agent 20-30 parts by weight, film forming aid 10-20 parts by weight, pigment 15-20 parts by weight, filler 50-60 parts by weight;

[0011] The B component includes the following raw materials in parts by weight: aliphatic isocyanate 80-100 parts by weight, cosolvent 50-60 parts by weight.

[0012] Specifically, the bio-based two-component polyurethane pavement marking material includes independently packaged A component and B component; wherein,

[0013] The A component includes the following raw materials in parts by weight: bio-based polyether polyol 60-70 parts by weight, bio-based polyester polyol 85-95 parts by weight, acrylic resin 52-58 parts by weight, bisphenol A epoxy resin 65-75 parts by weight, catalyst 12-14 parts by weight, film forming agent 22-28 parts by weight, film forming aid 12-18 parts by weight, pigment 16-19 parts by weight, filler 52-58 parts by weight;

[0014] The B component includes the following raw materials in parts by weight: aliphatic isocyanate 85-95 parts by weight, cosolvent 52-58 parts by weight.

[0015] Specifically, the bio-based two-component polyurethane pavement marking material includes independently packaged A component and B component; wherein,

[0016] The A component includes the following raw materials in parts by weight: bio-based polyether polyol 65 parts by weight, bio-based polyester polyol 90 parts by weight, acrylic resin 55 parts by weight, bisphenol A epoxy resin 70 parts by weight, catalyst 13 parts by weight, film forming agent 25 parts by weight, film forming aid 15 parts by weight, pigment 18 parts by weight, filler 55 parts by weight;

[0017] The B component includes the following raw materials in parts by weight: aliphatic isocyanate 90 parts by weight, cosolvent 55 parts by weight.

[0018] Specifically, the bio-based two-component polyurethane pavement marking material, the mass ratio of the A component and the B component is 1:1.

[0019] Specifically, the bio-based two-component polyurethane pavement marking material, the film forming aid includes a mixture of bagasse cellulose phosphate and bis(2-ethylhexyl) succinate.

[0020] Specifically, the mass ratio of the bagasse cellulose phosphate and bis (2-ethylhexyl) succinate in the bio-based two-component polyurethane pavement marking material is 1-3:1.

[0021] Specifically, the bio-based two-component polyurethane pavement marking material comprises:

[0022] The catalyst comprises triethyldiamine; and / or,

[0023] The pigment comprises titanium white; and / or,

[0024] The filler comprises talc or calcium carbonate powder; and / or,

[0025] The film-forming agent comprises dipropylene glycol butyl ether; and / or,

[0026] The co-solvent comprises dimethylformamide or N-methyl pyrrolidone.

[0027] The application further discloses a preparation method of the bio-based two-component polyurethane pavement marking material.

[0028] Specifically, the preparation method of the bio-based two-component polyurethane pavement marking material further comprises the steps that the A component and the B component are respectively prepared according to selected amounts of raw materials and proportions.

[0029] The application further discloses application of the bio-based two-component polyurethane pavement marking material in pavement marking brushing.

[0030] Compared with the prior art, the bio-based two-component polyurethane pavement marking material comprises the A component and the B component, the A component comprises bio-based polyether polyol, bio-based polyester polyol, acrylic resin, bisphenol A epoxy resin, a catalyst, a film-forming agent, a film-forming aid, a pigment and a filler, and the B component comprises aliphatic isocyanate and a co-solvent. The two-component polyurethane pavement marking material can be used for pavement marking brushing, especially, the film-forming performance can be improved to a certain extent by selecting the film-forming aid matched with the dipropylene glycol butyl ether film-forming agent in the whole system, the performance such as toughness and adhesion is improved, especially, the film-forming time is greatly improved, the whole polyurethane material system has a more optimal film-forming system, and the film-forming can be realized more quickly, and the bio-based two-component polyurethane pavement marking material is more suitable for pavement marking brushing in an emergency state.

[0031] The bio-based two-component polyurethane pavement marking material selects the bagasse cellulose phosphate and bis (2-ethylhexyl) succinate as the film-forming aid, the application performance of the film-forming aid is close to the performance of the existing polyurethane film-forming aid, and the film-forming aid system is especially suitable for the synergistic effect of the dipropylene glycol butyl ether film-forming agent.

[0032] The biobased two-component polyurethane pavement marking material has good degradable performance, and the degradation period is greatly shortened compared with chemical raw materials. After the service cycle is completed, the pavement marking material can directly participate in soil matter and other substances to provide new life matter for absorption and start a new round of energy circulation. The product safety is guaranteed, and the product has the advantages of green environmental protection. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] In the following embodiments of the present application, a two-component polyurethane pavement marking material is provided, which comprises independently packaged A component and B component; wherein,

[0035] The A component comprises the following raw materials in parts by weight: biobased polyether polyol 50-80 parts by weight, biobased polyester polyol 80-100 parts by weight, acrylic resin 50-60 parts by weight, bisphenol A epoxy resin 60-80 parts by weight, catalyst 10-15 parts by weight, film forming agent 20-30 parts by weight, film forming aid 10-20 parts by weight, pigment 15-20 parts by weight, and filler 50-60 parts by weight;

[0036] The B component comprises the following raw materials in parts by weight: aliphatic isocyanate 80-100 parts by weight, and cosolvent 50-60 parts by weight.

[0037] The two-component polyurethane pavement marking material of the present application utilizes a two-component polyurethane system, and a polyurethane material is obtained based on the reaction of a polyol and an isocyanate system. The polyurethane material has good adhesion performance, especially excellent film forming performance, and is suitable for marking construction on different pavements. Even on a wet pavement, the polyurethane material can quickly form a film to complete the pavement marking application.

[0038] In some specific embodiments, the two-component polyurethane pavement marking material comprises independently packaged A component and B component; wherein,

[0039] The A component includes raw materials in the following weight proportions: bio-based polyether polyol 60-70 parts by weight, bio-based polyester polyol 85-95 parts by weight, acrylic resin 52-58 parts by weight, bisphenol A epoxy resin 65-75 parts by weight, catalyst 12-14 parts by weight, film-forming agent 22-28 parts by weight, film-forming aid 12-18 parts by weight, pigment 16-19 parts by weight, filler 52-58 parts by weight;

[0040] The B component includes raw materials in the following weight proportions: aliphatic isocyanate 85-95 parts by weight, cosolvent 52-58 parts by weight.

[0041] In some specific embodiments, the two-component polyurethane pavement marking material includes an independently packaged A component and a B component; wherein,

[0042] The A component includes raw materials in the following weight proportions: bio-based polyether polyol 65 parts by weight, bio-based polyester polyol 90 parts by weight, acrylic resin 55 parts by weight, bisphenol A epoxy resin 70 parts by weight, catalyst 13 parts by weight, film-forming agent 25 parts by weight, film-forming aid 15 parts by weight, pigment 18 parts by weight, filler 55 parts by weight;

[0043] The B component includes raw materials in the following weight proportions: aliphatic isocyanate 90 parts by weight, cosolvent 55 parts by weight.

[0044] In some specific embodiments, the two-component polyurethane pavement marking material, the mass ratio of the A component and the B component is 1:1.

[0045] In some specific embodiments, the two-component polyurethane pavement marking material, the film-forming aid includes a mixture of bagasse cellulose phosphate and bis(2-ethylhexyl) succinate.

[0046] In some specific embodiments, the two-component polyurethane pavement marking material, the mass ratio of the bagasse cellulose phosphate and bis(2-ethylhexyl) succinate is 1-3:1.

[0047] In some specific embodiments, the two-component polyurethane pavement marking material:

[0048] The catalyst includes triethyldiamine; and / or,

[0049] The pigment includes titanium white; and / or,

[0050] The filler includes talc powder or calcium carbonate powder; and / or,

[0051] The film-forming agent includes dipropylene glycol butyl ether; and / or,

[0052] The co-solvent includes dimethylformamide or N-methylpyrrolidone.

[0053] The present invention also discloses a method for preparing the two-component polyurethane pavement marking material, comprising the step of taking a selected amount of component A and component B and mixing and reacting them.

[0054] Specifically, the preparation method of the two-component polyurethane pavement marking material further includes the steps of preparing component A and component B respectively according to selected amounts and proportions of raw materials.

[0055] As an exemplary embodiment, in the following examples of the present invention, the bio-based polyester polyol selected was purchased from Guangzhou Haierma Vegetable Oil Co., Ltd., product model HM-1070.

[0056] As an exemplary embodiment, in the following examples of the present invention, the selected bio-based polyether polyol was purchased from Guangzhou Haierma Vegetable Oil Co., Ltd., product model HM-635A.

[0057] Example 1

[0058] The two-component polyurethane road marking material described in this embodiment includes separately packaged component A and component B, wherein the mass ratio of component A to component B is 1:1; wherein,

[0059] Component A comprises the following raw materials in parts by weight: 65 parts by weight of bio-based polyether polyol, 90 parts by weight of bio-based polyester polyol, 55 parts by weight of acrylic resin, 70 parts by weight of bisphenol A epoxy resin, 13 parts by weight of catalyst (triethyldiamine), 25 parts by weight of film-forming agent (dipropylene glycol butyl ether), 15 parts by weight of film-forming aid (a mixture of sugarcane bagasse cellulose phosphate and bis(2-ethylhexyl) succinate in a mass ratio of 2:1), 18 parts by weight of pigment (titanium dioxide), and 55 parts by weight of filler (talc).

[0060] Component B comprises the following raw materials in parts by weight: 90 parts by weight of aliphatic isocyanate (hexamethylene diisocyanate, HDI) and 55 parts by weight of cosolvent (N-methylpyrrolidone).

[0061] The preparation method of the two-component polyurethane road marking material described in this embodiment includes the following steps:

[0062] (1) Take a selected amount of the bio-based polyether polyol, bio-based polyester polyol, acrylic resin and bisphenol A epoxy resin, mix them, heat to 60°C and mix thoroughly, and add a selected amount of the catalyst, film-forming agent, film-forming aid, pigment and filler to mix and obtain component A;

[0063] (2) Take a selected amount of the aliphatic isocyanate and the cosolvent and mix them thoroughly to obtain component B.

[0064] The two-component polyurethane pavement marking material described in this embodiment is used by mechanically mixing the A component and the B component in a mass ratio of 1:1 and applying it to the pavement by scraping or spraying.

[0065] Example 2

[0066] The two-component polyurethane pavement marking material described in this embodiment comprises an independently packaged A component and a B component, and the mass ratio of the A component to the B component is 1:1; wherein,

[0067] The A component comprises the following raw materials in parts by weight: 60 parts by weight of bio-based polyether polyol, 95 parts by weight of bio-based polyester polyol, 52 parts by weight of acrylic resin, 75 parts by weight of bisphenol A epoxy resin, 12 parts by weight of catalyst (triethyldiamine), 22 parts by weight of film-forming agent (dipropylene glycol butyl ether), 18 parts by weight of film-forming aid (a mixture of bagasse cellulose phosphate and bis(2-ethylhexyl) succinate in a mass ratio of 1:1), 16 parts by weight of pigment (titanium dioxide), and 58 parts by weight of filler (talc).

[0068] The B component comprises the following raw materials in parts by weight: 85 parts by weight of aliphatic isocyanate (hexamethylene diisocyanate, HDI) and 58 parts by weight of cosolvent (N-methylpyrrolidone).

[0069] The preparation method of the two-component polyurethane pavement marking material described in this embodiment comprises the following steps:

[0070] (1) A selected amount of the bio-based polyether polyol, bio-based polyester polyol, acrylic resin, and bisphenol A epoxy resin are mixed, heated to 60°C, and thoroughly mixed, and a selected amount of the catalyst, film-forming agent, film-forming aid, pigment, and filler are added and mixed to obtain the A component;

[0071] (2) A selected amount of the aliphatic isocyanate and cosolvent are thoroughly mixed to obtain the B component.

[0072] The two-component polyurethane pavement marking material described in this embodiment is used by mechanically mixing the A component and the B component in a mass ratio of 1:1 and applying it to the pavement by scraping or spraying.

[0073] Example 3

[0074] The two-component polyurethane pavement marking material described in this embodiment comprises an independently packaged A component and a B component, and the mass ratio of the A component to the B component is 1:1; wherein,

[0075] The A component includes the following raw materials in parts by weight: biobased polyether polyol 70 parts by weight, biobased polyester polyol 85 parts by weight, acrylic resin 58 parts by weight, bisphenol A epoxy resin 65 parts by weight, catalyst (triethyldiamine) 14 parts by weight, film forming agent (dipropylene glycol butyl ether) 28 parts by weight, film forming aid (mixture of bagasse cellulose phosphate and bis (2-ethylhexyl) succinate in a mass ratio of 3:1) 12 parts by weight, pigment (titanium dioxide) 19 parts by weight, filler (talc) 52 parts by weight;

[0076] The B component includes the following raw materials in parts by weight: aliphatic isocyanate (hexamethylene diisocyanate, HDI) 95 parts by weight, cosolvent (N-methyl pyrrolidone) 52 parts by weight.

[0077] The preparation method of the two-component polyurethane pavement marking material described in this embodiment includes the following steps:

[0078] (1) Take selected amounts of the biobased polyether polyol, biobased polyester polyol, acrylic resin, and bisphenol A epoxy resin, mix, heat to 60°C, and mix thoroughly, and add selected amounts of the catalyst, film forming agent, film forming aid, pigment, and filler, mix, to obtain the A component;

[0079] (2) Take selected amounts of the aliphatic isocyanate and cosolvent, mix thoroughly, to obtain the B component.

[0080] The two-component polyurethane pavement marking material described in this embodiment, when used, is mechanically mixed in a mass ratio of 1:1 between the A component and the B component, and is applied to the pavement using a squeegee or spray application method.

[0081] Example 4

[0082] The two-component polyurethane pavement marking material described in this embodiment includes independently packaged A and B components, and the mass ratio of the A component to the B component is 1:1; wherein,

[0083] The A component includes the following raw materials in parts by weight: biobased polyether polyol 50 parts by weight, biobased polyester polyol 100 parts by weight, acrylic resin 50 parts by weight, bisphenol A epoxy resin 80 parts by weight, catalyst (triethyldiamine) 10 parts by weight, film forming agent (dipropylene glycol butyl ether) 20 parts by weight, film forming aid (mixture of bagasse cellulose phosphate and bis (2-ethylhexyl) succinate in a mass ratio of 2:1) 20 parts by weight, pigment (titanium dioxide) 15 parts by weight, filler (calcium carbonate powder) 60 parts by weight;

[0084] The B component includes the following raw materials in parts by weight: aliphatic isocyanate (hexamethylene diisocyanate, HDI) 80 parts by weight, cosolvent (dimethylformamide) 60 parts by weight.

[0085] The preparation method of the two-component polyurethane pavement marking material described in this embodiment includes the following steps:

[0086] (1) Take a selected amount of the bio-based polyether polyol, bio-based polyester polyol, acrylic resin, and bisphenol A epoxy resin, mix them, heat to 60°C, and mix well, and then add a selected amount of the catalyst, film former, film forming aid, pigment, and filler to obtain component A;

[0087] (2) Take a selected amount of the aliphatic isocyanate and cosolvent, mix well to obtain component B.

[0088] The two-component polyurethane pavement marking material described in this embodiment is used by mechanically mixing the component A and component B in a mass ratio of 1:1, and then applying them to the road surface by scraping or spraying.

[0089] Example 5

[0090] The two-component polyurethane pavement marking material described in this embodiment includes independently packaged component A and component B, and the mass ratio of the component A and component B is 1:1; wherein,

[0091] The component A includes the following raw materials in parts by weight: bio-based polyether polyol 80 parts by weight, bio-based polyester polyol 80 parts by weight, acrylic resin 60 parts by weight, bisphenol A epoxy resin 60 parts by weight, catalyst (triethyldiamine) 15 parts by weight, film former (dipropylene glycol butyl ether) 30 parts by weight, film forming aid (a mixture of bagasse cellulose phosphate and bis(2-ethylhexyl) succinate in a mass ratio of 2:1) 10 parts by weight, pigment (titanium dioxide) 20 parts by weight, and filler (calcium carbonate powder) 50 parts by weight;

[0092] The component B includes the following raw materials in parts by weight: aliphatic isocyanate (hexamethylene diisocyanate, HDI) 100 parts by weight, and cosolvent (dimethylformamide) 50 parts by weight.

[0093] The preparation method of the two-component polyurethane pavement marking material described in this embodiment includes the following steps:

[0094] (1) Take a selected amount of the bio-based polyether polyol, bio-based polyester polyol, acrylic resin, and bisphenol A epoxy resin, mix them, heat to 60°C, and mix well, and then add a selected amount of the catalyst, film former, film forming aid, pigment, and filler to obtain component A;

[0095] (2) Take a selected amount of the aliphatic isocyanate and cosolvent, mix well to obtain component B.

[0096] The two-component polyurethane pavement marking material described in the embodiment is used by mechanically mixing the A component and the B component in a mass ratio of 1:1, and is applied to the pavement by using a squeegee or spray application method.

[0097] Comparative Example 1

[0098] The raw material system and preparation method of the two-component polyurethane pavement marking material described in the comparative example are the same as those of Example 1, and the only difference is that the film-forming aid is not added.

[0099] Comparative Example 2

[0100] The raw material system and preparation method of the two-component polyurethane pavement marking material described in the comparative example are the same as those of Example 1, and the only difference is that the film-forming aid is only added with bagasse cellulose phosphate, and the total amount of the film-forming aid is the same as that of Example 1.

[0101] Comparative Example 3

[0102] The raw material system and preparation method of the two-component polyurethane pavement marking material described in the comparative example are the same as those of Example 1, and the only difference is that the film-forming aid is only added with bis(2-ethylhexyl) succinate, and the total amount of the film-forming aid is the same as that of Example 1.

[0103] Comparative Example 4

[0104] The raw material system and preparation method of the two-component polyurethane pavement marking material described in the comparative example are the same as those of Example 1, and the only difference is that the film-forming aid is selected as BASF Lusolvan FBH.

[0105] Experimental Example

[0106] 1. Performance Test

[0107] The two-component polyurethane pavement marking material described in the experimental example is prepared based on the methods in the foregoing Example 1 and Comparative Examples 1-4, and is applied to the pavement by using a brushing application method. In the experimental example, the brushing is performed to form a marking on a test asphalt pavement with visible water on the pavement at a relative humidity of about 90%, and various performances of the marking are detected, and the results are shown in Table 1 below.

[0108] Table 1

[0109] Tensile strength / MPa Tear strength / KN / m Stain resistance rating wear / rotating roller drum / mm 3 ]] Example 1 28.7 37.5 0 grade 18 Comparative Example 1 22.7 33.1 1 grade 25 Comparative Example 2 25.1 34.6 1 grade 22 Comparative Example 3 24.3 33.9 1 grade 24 Comparative Example 4 27.4 36.2 0 grade 19

[0110] It can be seen that the double-component polyurethane pavement marking material can be used for brushing pavement marking, especially the film forming aid matched with the dipropylene glycol butyl ether film forming agent in the whole system can improve the film forming performance to some extent and improve the application performance of the marking material. The double-component polyurethane pavement marking material selects the bagasse cellulose phosphate and bis (2-ethylhexyl) succinate as the film forming aid, the application performance of which is close to the performance of the existing polyurethane film forming aid, and the film forming aid system is especially suitable for the synergistic effect of the dipropylene glycol butyl ether film forming agent.

[0111] 2. Film forming time test

[0112] The double-component polyurethane pavement marking material is prepared according to the method in the foregoing embodiment 1 and comparative examples 1-4 and is applied to the pavement by brushing. In the experiment, the surface dry time and the real dry time are tested according to the method in GB / T 1728, and the results are recorded in Table 2.

[0113] Table 2

[0114] Dry to touch time / min Dry to handle time / min Example 1 21 50 Comparative Example 1 39 95 Comparative Example 2 32 83 Comparative Example 3 28 70 Comparative Example 4 24 60

[0115] It can be seen that the double-component polyurethane pavement marking material selects the film forming aid matched with the dipropylene glycol butyl ether film forming agent in the whole system, which can better improve the film forming time of the polyurethane, not only the application performance of which is close to the performance of the existing polyurethane film forming aid, but also the film forming aid system is especially suitable for the synergistic effect of the dipropylene glycol butyl ether film forming agent.

[0116] In summary, the double-component polyurethane pavement marking material selects the A component and the B component by optimization and screening, especially selects the matched aid to improve the performance, the film forming performance of which is greatly improved, and the application performance is better.

[0117] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application.

[0118] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A bio-based two-component polyurethane road marking material, characterized in that, Includes individually packaged components A and B; wherein, The mass ratio of component A to component B is 1:1; Component A comprises the following raw materials in parts by weight: 50-80 parts by weight of bio-based polyether polyol, 80-100 parts by weight of bio-based polyester polyol, 50-60 parts by weight of acrylic resin, 60-80 parts by weight of bisphenol A epoxy resin, 10-15 parts by weight of catalyst, 20-30 parts by weight of film-forming agent, 10-20 parts by weight of film-forming aid, 15-20 parts by weight of pigment, and 50-60 parts by weight of filler. Component B comprises the following raw materials in parts by weight: 80-100 parts by weight of aliphatic isocyanate and 50-60 parts by weight of cosolvent. The film-forming agent is dipropylene glycol butyl ether; The film-forming aid is a mixture of sugarcane bagasse cellulose phosphate and bis(2-ethylhexyl) succinate; The mass ratio of sugarcane bagasse cellulose phosphate to bis(2-ethylhexyl) succinate is 1-3:

1.

2. The bio-based two-component polyurethane pavement marking material according to claim 1, characterized in that, Includes individually packaged components A and B; wherein, Component A comprises the following raw materials in parts by weight: 60-70 parts by weight of bio-based polyether polyol, 85-95 parts by weight of bio-based polyester polyol, 52-58 parts by weight of acrylic resin, 65-75 parts by weight of bisphenol A epoxy resin, 12-14 parts by weight of catalyst, 22-28 parts by weight of film-forming agent, 12-18 parts by weight of film-forming aid, 16-19 parts by weight of pigment, and 52-58 parts by weight of filler; Component B comprises the following raw materials in parts by weight: 85-95 parts by weight of aliphatic isocyanate and 52-58 parts by weight of cosolvent.

3. The bio-based two-component polyurethane pavement marking material according to claim 2, characterized in that, Includes individually packaged components A and B; wherein, Component A comprises the following raw materials in parts by weight: 65 parts by weight of bio-based polyether polyol, 90 parts by weight of bio-based polyester polyol, 55 parts by weight of acrylic resin, 70 parts by weight of bisphenol A epoxy resin, 13 parts by weight of catalyst, 25 parts by weight of film-forming agent, 15 parts by weight of film-forming aid, 18 parts by weight of pigment, and 55 parts by weight of filler. Component B comprises the following raw materials in parts by weight: 90 parts by weight of aliphatic isocyanate and 55 parts by weight of cosolvent.

4. The bio-based two-component polyurethane pavement marking material according to any one of claims 1-3, characterized in that: The catalyst comprises triethyldiamine; and / or, The pigment includes titanium dioxide; and / or, The filler includes talc powder or calcium carbonate powder; and / or, The co-solvent includes dimethylformamide or N-methylpyrrolidone.

5. A method for preparing a bio-based two-component polyurethane pavement marking material as described in any one of claims 1-4, characterized in that, The step includes taking selected amounts of component A and component B and mixing them for reaction.

6. The preparation method of the bio-based two-component polyurethane pavement marking material according to claim 5, characterized in that, The method further includes the steps of preparing component A and component B respectively according to selected amounts and proportions of raw materials.

7. The application of the bio-based two-component polyurethane road marking material according to any one of claims 1-4 in road marking application.