Cross-linking curing type waterproof binder and preparation method thereof, and hot-mixed epoxy asphalt and preparation method thereof

Abstract

The invention relates to the technical field of engineering materials, in particular to a cross-linking curing type waterproof binder and a preparation method thereof, and hot-mixed epoxy asphalt and a preparation method thereof. The waterproof binder comprises a component A and a component B, wherein the component A comprises the following raw materials: epoxy resin, carboxyl-terminated nitrile rubber, polyenol glycidyl ether and liquid polysulfide rubber; the component B is prepared from the following raw materials: diaminodiphenylmethane, microcapsule type dicyandiamide and 2-phenylimidazoline. The characteristics of the modified epoxy resin and the latent curing agent are utilized, an interlayer chemically bonded epoxy asphalt waterproof bonding pavement system is realized through a cross-linking synergistic effect and a staged curing mechanism, and the tightness, the waterproofness and the durability of the pavement system are improved. The waterproof binding material has excellent mechanical properties; the Marshall stability and the flow value of the epoxy asphalt mixture respectively reach 98kN and 2.98 mm, and the freeze-thaw splitting strength, the track dynamic stability and the low-temperature bending strain all meet the standards.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering materials, and in particular to a cross-linking and curing waterproof adhesive and a preparation method thereof, and a hot-mix epoxy asphalt and a preparation method thereof. Background Art

[0002] Bridge deck pavement plays a key role in bridge engineering, especially for long-span steel bridges, where the performance of the pavement layer directly determines the bridge's traffic efficiency, driving safety, and structural durability. Steel bridge decks are susceptible to temperature deformation due to their material properties and are subjected to high-density traffic loads for a long time, which places more stringent technical standards on paving materials: they must simultaneously meet multiple indicators such as deformation stability, fatigue cracking resistance, interlayer bonding strength, waterproof sealing, and driving comfort. For example, the paving material must resist rutting deformation in the high temperatures of summer, remain flexible and crack-resistant in the low temperatures of winter, and form a reliable bond with the steel bridge deck to prevent peeling. my country has significant regional climate differences. The alternating cold winters and high temperatures of summer, coupled with the intensive traffic of heavy vehicles, further exacerbates the risk of aging and damage to the pavement layer. Against this backdrop, epoxy asphalt has become a core material for steel bridge deck pavement due to its excellent comprehensive performance.

[0003] Chinese invention patent publication number CN115819015A discloses a rutting-resistant, drainable asphalt mixture. This drainable asphalt mixture utilizes a multi-component composite formula, primarily comprising an epoxy asphalt matrix, a mineral fiber reinforcement, and functional additives (styrene-butadiene copolymer, initiator, carboxyl silicone oil, etc.). By utilizing nano-calcium carbonate and aggregate fixation technology, this material achieves approximately 30% higher compressive strength than conventional asphalt while maintaining its original pore structure. It also significantly improves dynamic stability at temperatures of 60°C, effectively suppressing rutting deformation. However, using asphalt as the primary bonding component of the system presents technical bottlenecks in the mixture's heat resistance and deformation resistance. These bottlenecks primarily manifest as insufficient interfacial strength and elastic recovery, as well as susceptibility to moisture erosion, which impacts structural stability. Furthermore, high summer temperatures and thermal shock can easily degrade or inactivate the epoxy resin in the waterproof bonding layer, leading to corrosion issues such as water vapor permeation.

[0004] Chinese invention patent publication number CN118344057A discloses a rutting-resistant asphalt mixture for roads and its preparation method. Nanoscale fillers are evenly dispersed in the base asphalt and interact with each other to form a stable three-dimensional network structure, inhibiting the thermal motion of asphalt molecules and effectively improving the adhesion between the asphalt and aggregate. However, the invention requires the addition of a wood fiber agent to the bonding component, increasing the number of steps and mixing time, impacting construction. In engineering applications, the fiber material is difficult to disperse within the mixing equipment, causing it to clump.

[0005] Therefore, how to provide an epoxy asphalt paving system that can achieve interlayer chemical bonding and has both high-temperature stability and construction convenience is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0006] In order to solve the shortcomings of the existing technology, the present invention provides a cross-linking curing waterproof adhesive, comprising component A and component B. The raw materials of the component A include, by weight, 100 to 108 parts of epoxy resin, 12 to 18 parts of carboxyl-terminated nitrile rubber, 6 to 10 parts of polyphenol glycidyl ether, and 2 to 3 parts of liquid polysulfide rubber; The raw materials of the second component include 39-42 parts of diaminodiphenylmethane, 17-20 parts of microcapsule-type dicyandiamide and 0.8-1.0 parts of 2-phenylimidazoline.

[0007] In one embodiment, the epoxy resin is E-51 bisphenol A epoxy resin, and its epoxy equivalent weight is 190-200.

[0008] In one embodiment, the acrylonitrile content in the carboxyl-terminated nitrile rubber is 25% to 30%.

[0009] In one embodiment, the epoxy equivalent of the polyphenol glycidyl ether is 280-320.

[0010] In one embodiment, the mass ratio of component A to component B is 2.1-2.5:1.

[0011] The present invention also provides a method for preparing the cross-linked curing waterproof adhesive as described above, comprising the following steps: Preparation method of component A: S1, after weighing the epoxy resin and the carboxyl-terminated nitrile rubber in proportion, adding them into a vacuum reactor, stirring and reacting at 300-500 rpm / min for 1-2 hours under the action of a catalyst and under the protection of an inert gas, to generate a pre-grafted modified epoxy resin; S2. Add polyphenol glycidyl ether and liquid polysulfide rubber weighed in proportion to the pre-grafted modified epoxy resin produced in step S1, and stir the mixture at a high speed of 1200 to 1500 rpm / min for 15 to 20 minutes using a high-speed disperser to preliminarily disperse the resin components to obtain component A. Preparation method of component B: After adding diaminodiphenylmethane, microcapsule-type dicyandiamide and 2-phenylimidazoline in proportion, disperse them in a high-speed disperser at 600-800 rpm / min for 15-20 minutes to obtain component B after preliminary uniform dispersion; Component A and component B are mixed in proportion to obtain a waterproof adhesive.

[0012] In one embodiment, in step S1, the catalyst is triphenylphosphine, and the added amount of the catalyst is 0.5% to 1% of the total weight of the epoxy resin and the carboxyl-terminated nitrile rubber.

[0013] In one embodiment, the reaction temperature of step S1 is 80±2° C., and the inert gas is nitrogen.

[0014] The present invention also provides a hot mix epoxy asphalt, comprising component A and component B; The raw material of the component A is the component A of the cross-linking curing waterproof adhesive as described above; Calculated by mass, the raw materials of the component B include 180 to 200 parts of base asphalt, 18 to 20 parts of nano-montmorillonite and the raw materials of the component B of the cross-linking and curing waterproof adhesive as described above.

[0015] The present invention also provides a method for preparing hot mix epoxy asphalt, comprising the following steps: The preparation method of the component A is the preparation method of the component A of the cross-linking curing waterproof adhesive as described above; Preparation method of component B: After weighing the asphalt and nano-montmorillonite in proportion, preheat them and place them in a high-speed shear emulsifier for continuous shear dispersion at 160±10°C to uniformly disperse the montmorillonite and form an intercalation structure in the asphalt to obtain an asphalt-nano-montmorillonite blend; Adding diaminodiphenylmethane and microcapsule dicyandiamide in proportion to the asphalt-nano-montmorillonite blend, and then adding 2-phenylimidazoline, the mixture is dispersed in a high-speed disperser at 1200-1500 rpm / min for 10-15 minutes to preliminarily disperse the curing agent and the asphalt-nano-montmorillonite blend to obtain component B; The hot-mix epoxy asphalt is obtained by mixing component A and component B in a mass ratio of 0.4 to 0.6:1.

[0016] Preferably, in the preparation method of the second component, the preheating temperature of the asphalt and the nano-montmorillonite is 160°C.

[0017] Compared with the prior art, the cross-linked curing waterproof adhesive and its preparation method provided by the present invention, component A generates a pre-grafted modified epoxy resin through the ring-opening reaction of the terminal carboxyl group of the carboxyl-terminated nitrile rubber with the epoxy group of the epoxy resin, which gives the material low-temperature resistance and toughening effect; at the same time, polyphenol glycidyl ether and liquid polysulfide rubber work together to improve the dispersion uniformity and comprehensive bonding performance of the resin component; component B adopts a compound curing agent system of diaminodiphenylmethane and microcapsule type dicyandiamide, the former ensures temperature resistance and flexibility in high and low temperature environments, and the latter acts as a latent curing agent for rapid secondary curing under heating conditions, combined with 2-phenylimidazole The curing temperature and time are reduced by phenanthrene without affecting the basic performance. The waterproof adhesive provided by the present invention achieves excellent mechanical properties through the specific ratio of component A and component B and the combination of raw materials. It has good bonding effect on steel substrates and epoxy asphalt. The addition of end-carboxyl nitrile rubber dispersed in the bonding material improves the elongation at break of the coating by virtue of its toughening effect. The moderate gel fraction avoids excessive pre-curing affecting the secondary cross-linking, thereby significantly improving the tightness, waterproofness and durability of the paving system, meeting the application requirements in high temperature, heavy traffic and harsh environments, and solving the problems of insufficient interface bonding strength, limited temperature resistance and deformation resistance of traditional materials.

[0018] The hot-mix epoxy asphalt and its preparation method provided by the present invention achieve a performance breakthrough through the coordinated design of the modified epoxy resin system of component A and the asphalt-curing agent blending system of component B; the modified epoxy resin of component A is combined with polyphenol glycidyl ether and liquid polysulfide rubber to give the material high bonding strength, high and low temperature resistance and crack resistance; the matrix asphalt and nano-montmorillonite in component B are emulsified through high-speed shearing to form an intercalated structure, and the huge specific surface area of ​​nano-montmorillonite is used to improve the dispersibility and compatibility of asphalt and curing agent, reduce void stratification, and at the same time, the compounded diaminodiphenylmethane and microcapsule-type dicyandiamide curing agent system achieves staged cross-linking through a latent curing mechanism, ensuring the process adaptability during construction and the secondary curing effect after paving; after the two are mixed with aggregate mineral powder, the resulting epoxy asphalt mixture has density, water damage resistance, high temperature stability, low temperature crack resistance and heavy traffic fatigue tolerance, overcoming the defects of traditional asphalt mixtures such as insufficient temperature resistance and easy peeling of the bonding interface, and is suitable for harsh engineering scenarios such as long-span bridges and undersea tunnels. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] In order to provide an epoxy asphalt paving system that can achieve interlayer chemical bonding and has both high-temperature stability and construction convenience, the present invention provides the following examples and comparative examples of waterproof adhesives and hot-mix epoxy asphalt.

[0021] 1. Examples and Comparative Examples of Waterproof Adhesives Example 1 A cross-linked curing waterproof adhesive provided in Example 1 comprises component A and component B, wherein the mass ratio of component A to component B is 2.2:1; The raw materials of the component A include, by weight, 100 parts of epoxy resin, 12 parts of carboxyl-terminated nitrile rubber, 6 parts of polyphenol glycidyl ether and 2 parts of liquid polysulfide rubber; The raw materials of the second component include 39 parts of diaminodiphenylmethane, 17 parts of microcapsule-type dicyandiamide and 0.8 parts of 2-phenylimidazoline.

[0022] The epoxy resin is E-51 bisphenol A epoxy resin, and its epoxy equivalent is 190-200; the acrylonitrile content in the carboxyl-terminated nitrile rubber is 26%; and the epoxy equivalent of the polyphenol glycidyl ether is 280-320.

[0023] The preparation method of the cross-linking curing waterproof adhesive of Example 1 comprises the following steps: Preparation method of component A: S1. After weighing the epoxy resin and the carboxyl-terminated nitrile rubber in proportion, add them into a vacuum reactor, and stir at 80±2°C with triphenylphosphine as a catalyst at 300-500 rpm / min under nitrogen protection for 1.5 hours to produce a pre-grafted modified epoxy resin; wherein the amount of the catalyst added is 0.5%-1% of the total weight of the epoxy resin and the carboxyl-terminated nitrile rubber; S2. Add polyphenol glycidyl ether and liquid polysulfide rubber weighed in proportion to the pre-grafted modified epoxy resin produced in step S1, stir at a high speed of 1200-1500 rpm / min for 15-20 minutes using a high-speed disperser to preliminarily disperse the resin components, test the fineness and viscosity, and filter and package to obtain component A; Preparation method of component B: After adding diaminodiphenylmethane, microcapsule-type dicyandiamide and 2-phenylimidazoline in proportion, disperse them in a high-speed disperser at 600-800 rpm / min for 15-20 minutes to obtain component B after preliminary uniform dispersion; Component A and component B are mixed in proportion to obtain a waterproof adhesive.

[0024] Example 2 A cross-linked curing waterproof adhesive provided in Example 2 includes component A and component B. The raw materials of the component A include, by weight, 104 parts of epoxy resin, 15 parts of carboxyl-terminated nitrile rubber, 8 parts of polyphenol glycidyl ether and 2 parts of liquid polysulfide rubber; The raw materials of the component B include 40 parts of diaminodiphenylmethane, 19 parts of microcapsule-type dicyandiamide and 1.0 part of 2-phenylimidazoline.

[0025] The remaining raw material composition and preparation method of Example 2 are the same as those of Example 1.

[0026] Example 3 A cross-linked curing waterproof adhesive provided in Example 3 includes component A and component B. The raw materials of the component A include, by weight, 108 parts of epoxy resin, 18 parts of carboxyl-terminated nitrile rubber, 10 parts of polyphenol glycidyl ether and 3 parts of liquid polysulfide rubber; The raw materials of the component B include 42 parts of diaminodiphenylmethane, 20 parts of microcapsule-type dicyandiamide and 1.0 part of 2-phenylimidazoline.

[0027] The remaining raw material selection and preparation method of Example 3 are the same as those of Example 1.

[0028] Comparative Example 1 Compared with Example 1, Comparative Example 1 does not add carboxyl-terminated nitrile rubber, and the remaining raw material selection and preparation method are the same as Example 1.

[0029] Comparative Example 2 Compared with Example 1, Comparative Example 2 did not add microcapsule-type dicyandiamide, and the remaining raw material selection and preparation method were the same as Example 1.

[0030] Comparative Example 3 Comparative Example 3 Compared with Example 3, the raw material ratio of Component A did not change, while the raw material ratio of Component B changed. Component B specifically includes 48 parts of diaminodiphenylmethane, 6 parts of microcapsule-type dicyandiamide and 0.8 parts of 2-phenylimidazoline; the remaining raw material composition and preparation method are the same as in Example 1.

[0031] The waterproof adhesive embodiments and comparative examples of the present invention are shown in Table 1.

[0032] Table 1 Waterproof adhesive material examples and comparative examples

[0033] Examples 1-3 and Comparative Examples 1-3 were prepared into waterproof adhesives according to the formula ratios in the table. Their performance was tested and the adhesives were applied to steel plates sandblasted to SA2.5 to prepare samples (test adhesion). The test results are shown in Table 2.

[0034] Table 2 Waterproof adhesive performance test results

[0035] As shown in Table 2, the experimental results of Examples and Comparative Example 1 indicate that epoxy resin and carboxyl-terminated nitrile rubber as the main film-forming materials can achieve excellent mechanical properties (tensile strength > 3.5 MPa) and good bonding effect (steel plate bonding strength > 7 MPa). The addition of carboxyl-terminated nitrile rubber to the bonding material improves the elongation at break of the coating (both Examples 2 and 3 > 350%) due to its toughening effect, achieving excellent crack resistance. The experimental results of Examples 1, 2 and Comparative Example 2 show that after the composite curing agent system is changed to monodiaminodiphenylmethane curing agent, the gel fraction of the obtained adhesive material is too high after 24 hours of pre-curing, which will lead to the inability to secondary cure and improve the bonding performance during the hot-mix epoxy asphalt paving; The experimental results of Examples 2, 3 and Comparative Example 3 show that the main function of the microcapsule-type dicyandiamide in the composite curing agent system is to improve the flexibility and elongation at break of the coating at room temperature. The difference in gel fraction also shows that the microcapsule-type dicyandiamide can delay room temperature curing and achieve the effect of second-stage curing after heating.

[0036] 2. Examples and Comparative Examples of Hot Mix Epoxy Asphalt Example 1 A hot mix epoxy asphalt provided in Example 1 comprises component A and component B, wherein the mass ratio of component A to component B is 0.5:1; The raw materials of the component A include, by weight, 100 parts of epoxy resin, 12 parts of carboxyl-terminated nitrile rubber, 6 parts of polyphenol glycidyl ether and 2 parts of liquid polysulfide rubber; The raw materials of the second component include 180 parts of matrix asphalt, 18 parts of nano-montmorillonite, 39 parts of diaminodiphenylmethane, 17 parts of microcapsule-type dicyandiamide and 0.8 parts of 2-phenylimidazoline.

[0037] The epoxy resin is E-51 bisphenol A epoxy resin, and its epoxy equivalent is 190-200; the acrylonitrile content in the carboxyl-terminated nitrile rubber is 26%; the epoxy equivalent of the polyphenol glycidyl ether is 280-320; and the matrix asphalt is 70# matrix asphalt.

[0038] Preparation method of hot mix epoxy asphalt in Example 1: Preparation method of component A: S1. After weighing the epoxy resin and the carboxyl-terminated nitrile rubber in proportion, add them into a vacuum reactor, and stir the reaction at 300-500 rpm / min for 1.5 hours at 80±2°C with triphenylphosphine as a catalyst under nitrogen protection to produce a pre-grafted modified epoxy resin; wherein the amount of the catalyst added is 0.5%-1% of the total weight of the epoxy resin and the carboxyl-terminated nitrile rubber; S2. Add polyphenol glycidyl ether and liquid polysulfide rubber weighed in proportion to the pre-grafted modified epoxy resin produced in step S1, stir at a high speed of 1200-1500 rpm / min for 15-20 minutes using a high-speed disperser to preliminarily disperse the resin components, test the fineness and viscosity, and filter and package to obtain component A; Preparation method of component B: After weighing the asphalt and nano-montmorillonite in proportion, preheat them at 160°C, add them to a high-speed shear emulsifier and continuously shear and disperse them at 160±10°C for 30 minutes at a shear rate of 5000 rpm / min to uniformly disperse the montmorillonite and form an intercalated structure in the asphalt to obtain an asphalt-nano-montmorillonite blend; Adding diaminodiphenylmethane and microcapsule dicyandiamide in proportion to the asphalt-nano-montmorillonite blend, and then adding 2-phenylimidazoline, the mixture is dispersed in a high-speed disperser at 1200-1500 rpm / min for 10-15 minutes to preliminarily disperse the curing agent and the asphalt-nano-montmorillonite blend to obtain component B; The hot-mix epoxy asphalt is obtained by mixing component A and component B in a mass ratio of 0.5:1.

[0039] Example 2 The hot mix epoxy asphalt provided in Example 2 comprises component A and component B, wherein the mass ratio of component A to component B is 0.5:1; The raw materials of the component A include, by weight, 108 parts of epoxy resin, 18 parts of carboxyl-terminated nitrile rubber, 10 parts of polyphenol glycidyl ether and 3 parts of liquid polysulfide rubber; The raw materials of the second component include 200 parts of matrix asphalt, 20 parts of nano-montmorillonite, 42 parts of diaminodiphenylmethane, 20 parts of microcapsule-type dicyandiamide and 1.0 part of 2-phenylimidazoline.

[0040] The remaining raw material composition and preparation method of Example 2 are the same as those of Example 1.

[0041] Comparative Example 1 Compared with Example 1, Comparative Example 1 does not add carboxyl-terminated nitrile rubber, and the remaining raw material selection and preparation method are the same as Example 1.

[0042] Comparative Example 2 Comparative Example 2 Compared with Example 2, the raw material ratio of Component A did not change, while the raw material ratio of Component B changed. Component B specifically includes 260 parts of base asphalt, 26 parts of nano-montmorillonite, 42 parts of diaminodiphenylmethane, 19 parts of microcapsule-type dicyandiamide and 0.8 parts of 2-phenylimidazoline; the remaining raw material composition and preparation method are the same as in Example 1.

[0043] Examples of hot mix epoxy asphalt mixtures of the present invention are shown in Table 3 below: Table 3 Hot mix epoxy asphalt examples and comparative examples

[0044] Performance Testing After mixing component A and component B in Examples 1 and 2 and Comparative Examples 1 and 2 according to the formula mass ratio in the table, hot-mix epoxy asphalt was prepared, and 5 kg of aggregate and 0.33 kg of mineral powder were added according to an oilstone ratio of 1:16 (Note: the oilstone ratio of 1:16 is the ratio of the total weight of components A and B to the total weight of aggregate mineral powder is 1:16) to prepare an epoxy asphalt mixture with a thickness of 5 cm. The freeze-thaw splitting strength, rutting dynamic stability, Marshall strength and flow value, low-temperature flexural strength, and porosity of the epoxy asphalt mixture were tested, and a three-point loaded composite beam specimen was formed on a SA2.5 grade rust-removed steel plate (to test the fatigue resistance of the epoxy asphalt mixture and the waterproof bonding material).

[0045] The test results are shown in Table 4.

[0046] Table 4

[0047] As can be seen from Table 4, the Marshall stability of the embodiment is much higher than that of the comparative example, indicating that it has a stronger load-bearing capacity; the Marshall flow value of the embodiment is lower than that of the comparative example, indicating that the deformation coordination of the embodiment is better. The experimental results of the two groups of embodiments and the two groups of comparative examples show that the composite resin as the main film-forming material can achieve excellent mechanical properties; the low-temperature bending strain and freeze-thaw splitting strength of the embodiment are significantly higher than those of the comparative example, indicating that the embodiment has better resistance to low-temperature cracking and stronger resistance to water damage. The experimental results of Examples 1 and 2 and Comparative Example 1 show that the epoxy asphalt mixture obtained by using a single-system epoxy resin cannot meet the requirements of heavy traffic and harsh environment applications in terms of low temperature resistance and fatigue strength, which will lead to problems such as cracking and slippage in the asphalt pavement. The experimental results of Examples 1, 2 and Comparative Example 2 show that the asphalt-nano-montmorillonite blend has the best ratio when added in an amount of 50-55% (the amount of blend added is 50%-55% of the total amount of A and B). When the asphalt content exceeds 60% (the amount of asphalt added exceeds 60% of the total amount of A and B), the performance of the mixture decreases significantly, and the porosity, stability, low-temperature resistance and fatigue strength do not meet the standard requirements.

[0048] In summary, the present invention utilizes the characteristics of the modified epoxy resin and latent curing agent to achieve an epoxy asphalt waterproof bonding paving system with interlayer chemical bonding through the cross-linking synergistic effect and staged curing mechanism, thereby improving the tightness, waterproofness and durability of the paving system. The adhesion of the waterproof bonding material between the steel substrate and the epoxy asphalt protective layer exceeds 3MPa, and the mechanical properties are excellent; the Marshall stability and flow value of the epoxy asphalt mixture reach 98kN and 2.98mm respectively, and the freeze-thaw splitting strength, rutting dynamic stability and low-temperature bending strain all meet the standards. Fatigue vibration exceeds tens of millions of times without cracking, indicating that the epoxy asphalt waterproof paving material still has excellent performance in high temperature and heavy traffic scenarios. It overcomes the application areas with strict requirements on waterproofness and durability such as large-span bridges and submarine tunnels.

[0049] Although terms such as epoxy resin, carboxyl-terminated nitrile rubber, polyphenol glycidyl ether and liquid polysulfide rubber are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cross-linking curing waterproof adhesive, characterized in that: It includes component A and component B. The raw materials of the component A include, by weight, 100 to 108 parts of epoxy resin, 12 to 18 parts of carboxyl-terminated nitrile rubber, 6 to 10 parts of polyphenol glycidyl ether, and 2 to 3 parts of liquid polysulfide rubber; The raw materials of the second component include 39-42 parts of diaminodiphenylmethane, 17-20 parts of microcapsule-type dicyandiamide and 0.8-1.0 parts of 2-phenylimidazoline.

2. The cross-linking curing waterproof adhesive according to claim 1, characterized in that: The epoxy resin is E-51 bisphenol A type epoxy resin, and its epoxy equivalent is 190-200.

3. The cross-linking curing waterproof adhesive according to claim 1, characterized in that: The acrylonitrile content in the carboxyl-terminated nitrile rubber is 25% to 30%.

4. The cross-linking curing waterproof adhesive according to claim 1, characterized in that: The epoxy equivalent of the polyphenol glycidyl ether is 280-320.

5. The cross-linking curing waterproof adhesive according to claim 1, characterized in that: The mass ratio of the component A to the component B is 2.1-2.5:

1.

6. A method for preparing the cross-linking curing waterproof adhesive according to any one of claims 1 to 5, characterized in that: The steps include: Preparation method of component A: S1, after weighing the epoxy resin and the carboxyl-terminated nitrile rubber in proportion, adding them into a vacuum reactor, stirring and reacting at 300-500 rpm / min for 1-2 hours under the action of a catalyst and under the protection of an inert gas, to generate a pre-grafted modified epoxy resin; S2. Add polyphenol glycidyl ether and liquid polysulfide rubber weighed in proportion to the pre-grafted modified epoxy resin produced in step S1, and stir the mixture at a high speed of 1200 to 1500 rpm / min for 15 to 20 minutes using a high-speed disperser to preliminarily disperse the resin components to obtain component A. Preparation method of component B: After adding diaminodiphenylmethane, microcapsule-type dicyandiamide and 2-phenylimidazoline in proportion, disperse them in a high-speed disperser at 600-800 rpm / min for 15-20 minutes to obtain component B after preliminary uniform dispersion; Component A and component B are mixed in proportion to obtain a waterproof adhesive.

7. The method for preparing the cross-linking curing waterproof adhesive according to claim 6, wherein: In step S1, the catalyst is triphenylphosphine, and the added amount of the catalyst is 0.5% to 1% of the total weight of the epoxy resin and the carboxyl-terminated nitrile rubber.

8. The method for preparing the cross-linking curing waterproof adhesive according to claim 6, wherein: The reaction temperature of step S1 is 80±2° C., and the inert gas is nitrogen.

9. A hot mix epoxy asphalt, characterized in that: It includes component A and component B; The raw material of the component A is the component A of the cross-linking curing waterproof adhesive according to any one of claims 1 to 5; Calculated by mass, the raw materials of the component B include 180 to 200 parts of base asphalt, 18 to 20 parts of nano-montmorillonite and the raw materials of the component B of the cross-linking and curing waterproof adhesive according to any one of claims 1 to 5.

10. A method for preparing hot mix epoxy asphalt according to claim 9, characterized in that: The steps include: The preparation method of the component A is the preparation method of the component A of the cross-linking curing waterproof adhesive according to any one of claims 6 to 8; Preparation method of component B: After weighing the asphalt and nano-montmorillonite in proportion, preheat them and place them in a high-speed shear emulsifier for continuous shear dispersion at 160±10°C to uniformly disperse the montmorillonite and form an intercalation structure in the asphalt to obtain an asphalt-nano-montmorillonite blend; Adding diaminodiphenylmethane and microcapsule dicyandiamide in proportion to the asphalt-nano-montmorillonite blend, and then adding 2-phenylimidazoline, the mixture is dispersed in a high-speed disperser at 1200-1500 rpm / min for 10-15 minutes to preliminarily disperse the curing agent and the asphalt-nano-montmorillonite blend to obtain component B; The hot-mix epoxy asphalt is obtained by mixing component A and component B in a mass ratio of 0.4 to 0.6:1.

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