Waterborne Epoxy Research Articles

Benzotriazole corrosion inhibitor loaded nanocontainer based on g-C3N4 and hollow polyaniline spheres towards enhancing anticorrosion performance of waterborne epoxy coatings

Multi-dimensional composite nanocontainers provided an opportunity to prolong the service life of waterborne self-healing coatings through combining intelligent protection with physical barrier. Herein, we constructed a benzotriazole (BTA) corrosion inhibitor loaded nanocontainer with barrier/controlled release/corrosion inhibition properties by assembling graphitic (g)-C3N4 lamella, hollow polyaniline capsule and outer polydopamine wall. Hollow polyaniline and g-C3N4 lamella with adsorption properties provide effective space and sites for loading BTA corrosion inhibitor. Outer polydopamine wall can not only realize the controlled release of corrosion inhibitor, but also ensure the good compatibility between the composite container and the water-based epoxy resin. In addition, polydopamine (PDA) and polyaniline (PANI) as a container frame can also serve as active inhibitors after the release of corrosion inhibitor to enhance the self-healing protection effect of waterborne coatings. In comparative evaluation, the composite coatings containing BTA-loaded nanocontainers (0.5 wt.%) exhibit obviously physical barrier effect after soaking in 3.5 wt.% NaCl solution for 40 days, and maintains good protective performance after immersion for 80 days. Meanwhile, the artificial scratch experiment verified the effective self-repair protection of the composite container to the coating under the condition of damage. To be sure, it will provide an effective improvement idea for the long-term application of waterborne epoxy coating in marine environment.

Preparation and evaluation of a fluorinated nano-silica superhydrophobic coating for cement pavement

To reduce the traffic risk of pavement icing, a fluorinated nano-silica superhydrophobic coating for cement pavement was prepared with fluorinated nano-silica, carbon black, and waterborne epoxy resin. The component and spraying dosage were analyzed for optimal performance by combining the fluorination verification, component contents determination, and spraying dosage optimization. The engineering performance was evaluated for applicability, basing anti-icing performance and pavement durability. The test results showed that the fluorine group has successfully drafted on the nano-silica. The determined content of nano-silica is 75 wt% and of carbon black is 17.5 wt% of waterborne epoxy resin. The optimal application amount is 0.5 L/m2 to balance the requirement of superhydrophobic property and skid resistance. Meanwhile, the prepared coating has a good engineering performance. It can boost 70 % ability to repulse incoming water droplets, delay 40 % time of ice formation, and increase 40 % ratio of ice-layer removal compared with the uncoated. It can also maintain the basic appearance and superhydrophobic property after about 150,000 times wheel abrasion or three high-low temperature cycles. This demonstrates that the prepared coating has a good potential for practical use.

Eco-friendly design of α-zirconium phosphate modified by phytic acid for reinforcing the corrosion resistance of waterborne epoxy coating

Owing to the increasingly stringent environmental regulations, eco-friendly waterborne epoxy (WEP) coating currently gets much attention as an alternative choice of traditional coating. But the intrinsic problems of WEP, including poor barrier property and lack of long-term anticorrosion performance, was a limitation for its application. Herein, α-zirconium phosphate (α-ZrP) was prepared and exfoliated under mild condition. Then α-ZrP after exfoliation was functionalized by eco-friendly phytic acid (PA) molecular and a novel nano-filler (PZ) was obtained. The test results of the XRD, FTIR, SEM, TEM and XPS indicated that the preparation of nano-materials was successful. Through the EIS test, the outstanding barrier property of WEP incorporating with PZ was proved. Moreover, the excellent long-term anticorrosion performance of WEP incorporating with PZ was also proved by the salt spray test.

Study on the Influence of Frozen Soil Change Characteristics on Pavement Materials in Cold Region

The challenge of constructing roads on frozen ground in cold climes has long been acknowledged on a global scale. As a result, particular requirements for pavement materials and structures have been developed to address the special construction and usage conditions for highway pavement. The influence of frozen soil change features on pavement materials in cold places is utilized to research the fluctuation law of subgrade temperature field under cement concrete and asphalt pavements because subgrade and pavement illnesses frequently occur in permafrost locations. The residual tensile strength of regular emulsified asphalt dropped to 50% after 7 days of continuous immersion, while that of high-performance modified emulsified asphalt only reached 75%. However, the residual tensile strength of water-borne epoxy resin emulsified asphalt remained over 90%. Regardless of how smooth or uneven the contact surface is, the results show that water-borne epoxy resin emulsified asphalt has good adhesive qualities. However, the water-borne epoxy resin emulsified asphalt still retained over 90% of its original tensile strength. Regardless of how smooth or uneven the contact surface is, the results show that water-borne epoxy resin emulsified asphalt has good adhesive qualities.

Enhancing the corrosion resistance of waterborne epoxy coating by fumarate intercalated LDHs prepared by high gravity technology

Fumarate intercalated layered double hydroxides (LDH-NC-Fu and LDH-RPB-Fu) are prepared by normal coprecipitation and rotating packing bed respectively and then added into waterborne epoxy coating as filler in order to enhance the corrosion resistance of coating. The obtained LDH powders are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectrometer (XPS) and laser particle size distribution. Compared to LDH-NC-Fu, LDH-RPB-Fu has a more regular shape, smaller particle size, narrower distribution and the preparation time of LDH slurry is greatly shortened. The electrochemical impedance spectroscopy (EIS) and salt spray test show that the addition of LDH-RPB-Fu can improve the corrosion resistance of waterborne epoxy coatings more than LDH-NC-Fu, which is attributed to the uniform dispersion of LDH-RPB-Fu in the resin and able to load more corrosion inhibitor.

Computation of Binding Energy of MCS and GO-Grafted MCS with Waterborne Epoxy Resin Using Density Functional Theory Method: Investigating the Corrosion Resistance of the Composite Coatings.

In order to overcome the problems of poor corrosion resistance and low hydrophobicity of water-based coatings. Two corrosion-inhibiting materials, graphene oxide (GO) and modified chitosan (MCS), were added to the coatings to obtain a new type of coating with comprehensive properties. The composite material formed by PVA cross-linked waterborne epoxy resin was named "substrate". The density functional theory (DFT) calculation was used to explore the binding ability of MCS and GO-grafted MCS to the substrate, respectively. The results showed that the complex cross-linked network structure formed by the grafting of GO and MCS not only improved the intermolecular interaction force but also improved the binding ability to the substrate, and the coating is denser, effectively delaying the erosion to the coating by the corrosive medium. The composite coating exhibited excellent dual functional properties of hydrophobicity and corrosion resistance at the coating-metal interface, and a stronger protective effect was formed upon the steel plate. Studies showed that this composite coating has good hydrophobic properties. (The contact angle of the composite waterborne coating reaches 87°.) It also has low self-corrosion current (0.28/cm-2) and high corrosion voltage (-0.45 V). The maximum inhibition efficiency of the coating is 99.97%.

Optimal preparation and characterization of self-curing concrete containing internal superabsorbent polymer and external waterborne epoxy coating

This study aimed to develop a novel type of self-curing concrete, that is, concrete specimens concurrently cured with a superabsorbent polymer (SAP) and waterborne epoxy coating (WEC). First, the flowability, mechanical properties, and durability performance of the SAP internally cured concrete were tested to optimize its material composition. Subsequently, a modified grey target decision-making method based on a range analysis and grey target decision model was adopted to optimize the application parameters of the WEC materials. Furthermore, the performance of concretes cured with separate or composite SAP-WEC materials was evaluated by measuring the compressive strength, flexural strength, and chloride permeability. Finally, scanning electron microscopy was used to characterize the surfaces, interfaces, and internal microstructures of the samples. The optimal comprehensive performance of the concrete was obtained when WEC materials with a stoichiometry of 5:25 were applied at a rate of 240 g/m2 with double-layer sprays. The self-curing concrete possessed good properties in terms of high compressive strength and chloride resistance, followed by the concrete cured with the WEC materials, and then the SAP internally cured concrete. The microstructural analysis results showed that the simultaneous application of internal SAP and external WEC materials is conducive to ensuring moisture retention in concrete, thereby improving the hydration reaction degree and strength development. This work can serve as a solid base for the efficient utilization of self-curing concrete in engineering.

Ultraductile Cementitious Structural Health Monitoring Coating: Waterborne Polymer Biomimetic Muscle and Polyhedral Oligomeric Silsesquioxane‐Assisted C‐S‐H Dispersion

AbstractCement‐based sensors (CBSs) have demonstrated potential in structural health monitoring (SHM) despite rare applications due to their poor flexibility and sensing accuracy/protection with robustness. Herein, a promising strategy is reported to design a waterborne epoxy resin (WEP)‐modified cement‐based composite coating sensorcapable of simultaneous stable SHM and durable protection. The interpenetrating network (IPN) formed by WEP within cement paste is bionic to the toughness and crack resistance of biological muscle tissue and balances the ion permeation performance and polarization of hydration products. The polymerization‐redispersion progress and mechanism of calcium silicate hydrate (C‐S‐H) gel modified with [3‐(2‐aminoethylamino)‐propyl]trimethoxysilane silsesquioxane (C‐POSS) are characterized and revealed. The results show that the muscle‐like IPN increases the cement‐based coatings’ maximum deflection angle to 30° and improves the monitoring accuracy of compressive, tensile, and fatigue microchanges of concrete structures to more than 95%. The POSS···Ca2+···C‐S‐H interaction in C‐POSS partially transferred the intra‐adhesive hydrogen bonds surrounding the nanoconducer into electrostatic bridging ones to maintain an excellent electromechanical conductive dispersion.

Performance optimization of epoxy resin-based modified liquid asphalt mixtures

This study proposes a performance optimization scheme of liquid asphalt mixtures (LAMs) based on epoxy resin-based material modification and investigates its various performances. First, thermogravimetric analysis and headspace gas chromatography–mass spectrometry were used to analyze the differences between liquid asphalt before and after curing to clarify the formation mechanism of its adhesive force. Second, a molecular model was established. The best epoxy resin and curing agent types were evaluated using an improved Flory–Huggins model and the quantum computing method. Finally, two performance optimization schemes were established to reinforce the performance defects of the mixture caused by residual diluents. Results show that liquid asphalt solidification is a physical process of volatilization of diluents. Bisphenol A epoxy resin and a polyether amine curing agent are compatible with liquid asphalt and prone to curing reactions; thus, they are most suitable as epoxy resin-based modifiers. A solution obtained by adding 2% waterborne epoxy resin and 30% mineral powder replaced with cement can significantly improve the initial strength, strength generation rate, and low-temperature crack resistance of the LAM while optimizing high-temperature performance. This LAM modification can ensure that roads repaired using the modified LAM in a low-temperature environment can be quickly opened to use and improve the durability of the road surface.

Interfacial strengthening of carbon fiber/epoxy composites through a sulfonated high-epoxy-value sizing agent

To improve the wettability of epoxy resin to carbon fibers (CFs) and enhance the interfacial adhesion of carbon fiber reinforced epoxy composites (CFREs), the epoxy resin was chemically modified with polyethylene glycol (PEG) and maleic anhydride (MAH) to prepare a sulfonated high-epoxy-value waterborne epoxy sizing agent. The epoxy groups at both ends of the sizing agent help to improve the wettability between the CFs and epoxy resin. Use various methods to characterize the performance of the sizing emulsion. Experimental results showed that the sizing agent prepared by PEG800 could achieve the best performance, where the storage and thermal stabilities are good. The introduction of the sizing agent did not sacrifice the tensile strength of CF monofilament. According to the surface energy results, the retained epoxy groups in the sizing agent facilitate good wettability between CFs and epoxy resin. The interlaminar shear strength (ILSS) value increased from 46.52 to 51.74 MPa, an increment of 11.22%. This study shows that using a high-epoxy-value sizing agent is one of the alternative methods to strengthen the mechanical properties of the fiber-matrix interface and enhance the mechanical properties of CF/epoxy composites.

Preparation and performance of an asphalt pavement sealant with waterborne epoxy resin

• The design content of WER in SBS modified emulsified sealant was identified. • Effect of WER on the adhesive strength of WER-SBS-EA was investigated. • Ultraviolet aging characteristics of WER-SBS-EA were studied at different radiation times. At present, crack sealing is a widely accepted routine preventative maintenance practice of asphalt pavements. Successful crack sealing is perceived to be of the primary importance by maintenance engineer because if not properly exercised, excessive aging, extended cracking, and high temperature flow deformation of pavements will be resulted. In this study, the waterborne epoxy resin (WER) and styrene butadiene styrene (SBS) composite modified emulsified asphalt sealant (WER-SBS-EA), was prepared. The optimum contents design of modified emulsified asphalt (SBS-EA) was identified by the shear strength test. Then, the properties of the WER-SBS-EA were investigated by contact angle, pull-off, and indoor accelerated ultraviolet (UV) aging tests. The results showed that the shear strength of the WER-SBS-EA was increased by WER, and the optimum proportioning of the WER: SBS-EA was 2:3. The WER-SBS-EA, with a contact angle greater than 90°, i.e. was hydrophobic. The surface energy and work of adhesion of the WER-SBS-EA were higher than those of the SBS-EA, which means that the WER-SBS-EA has good bonding strength. As the temperature and immersion time increased, the bonding strength of the WER-SBS-EA was decreased but still higher than that of the original SBS-EA. In addition, the shear strength of the WER-SBS-EA after aging for 16 days is still 44.4 % higher than that of the unaged SBS-EA; hereby the presence of WER in the asphalt sealant can help counteract the stiffening effect resulting from oxidative hardening. Therefore, the WER-SBS-EA can be used for preventive maintenance and is of great significance for extending the service life of the asphalt pavement.

Mechanical properties and enhancement mechanisms of cold recycled mixture using waterborne epoxy resin/styrene butadiene rubber latex modified emulsified asphalt

• CRM containing only fresh aggregate and WSEA has better mechanical properties; • WER/SBR modifier can provide the strengthening and toughening effects on CRM; • Dissipation energy ratio and relaxation time can better evaluate the CRM toughness; • The added fresh aggregates favor toughness rather than mechanical strength of CRM; • Asphalt syncretization occurs in the outermost three layers at RAP aggregate surface. To better understand the enhancement mechanisms of waterborne epoxy resin/styrene butadiene rubber latex modified emulsified asphalt (WSEA) on the mechanical properties of cold recycled mixture (CRM), four types of CRM specimens were prepared to systematically discuss the mechanical property changes based on nanoindentation tests. Then the syncretization state between aged asphalt and WSEA, as well as the microstructures of asphalt-aggregate interfaces were analyzed by Fourier transform infrared spectroscope and scanning electron microscope tests, revealing the performance enhancement mechanisms. Results indicated that the mechanical properties of CRM prepared by fresh aggregate and WSEA were better. Also, the toughness of CRM could be accurately characterized by the dissipation energy ratio and relaxation time rather than the creep compliance. Additionally, the syncretization occurred in the asphalt samples of the outermost three layers at RAP aggregate surface. The added fresh aggregate was beneficial to forming WSEA-fresh aggregate interface, improving the anti-cracking property and moisture stability. Finally, the result reliability of the nanoindentation test was verified by indirect tension tests and conventional tests of pavement performance.

Facile Fabrication of Dual Functional Graphene Oxide Microcapsules Carrying Corrosion Inhibitor and Encapsulating Self-Healing Agent.

Dual functional graphene oxide (GO) microcapsules were fabricated through self-assembly in Pickering emulsions, carrying corrosion inhibitor benzotriazole (BTA) on the microcapsule shells and encapsulating a self-healing agent epoxy monomer. The formation of the GO microcapsules was assisted by the interaction between BTA and GO, which provided robust encapsulation for the epoxy monomer. The loading capacity of BTA and epoxy monomer reached 90.5%. The addition of the GO microcapsules simultaneously promoted the corrosion protection and self-healing properties of the waterborne epoxy composite coatings. The healing efficiency of the composite coatings reached over 99.7% when the content of the microcapsules was 10 wt%. Meanwhile, the corrosion current density of the intact coatings was decreased for around 50 times.

Void distribution, interfacial adhesion and anti-cracking mechanisms of cold recycled asphalt mixture based on AFM and X-ray CT

To reveal the anti-cracking mechanisms of cold recycled mixture (CRM) prepared by waterborne epoxy resin/styrene butadiene rubber latex (WER/SBR) modified emulsified asphalt (EA), the void distributions in CRM were analyzed by X-ray computed tomography. Then a method for calculating the adhesion work of asphalt-aggregate interface was proposed based on atomic force microscope tests. Finally, the anti-cracking properties were discussed by low-temperature bending and semicircular bending fatigue tests. Results indicated that the surface void contents of CRM specimen were all smaller in the middle and larger at both ends along the height direction. The WER/SBR modifier exerted a significant filling effect on the voids, reducing the void content and size. Moreover, WER/SBR modified EA (WSEA) showed stronger adhesion property and deformation resistance. WSEA-fresh aggregate interface had the largest adhesion work of 267.25 mJ/m2. Further, the interfacial adhesion failure between EA and fresh aggregate, as well as the cohesive failure of the syncretic interface between EA and aged asphalt were the main cracking forms of CRM specimen. A three-dimensional network in the WSEA-aggregate interface was formed by the WER/SBR modifier, improving the interfacial adhesion property. The void distributions and interfacial adhesion property in CRM specimen significantly affected the cracking resistance.

Mxene structure: A key parameter in corrosion barrier performance of organic coatings

In this research, the effects of fresh and oxidized MXene on the surface, adhesion, and corrosion-resistant properties of waterborne epoxy coatings are considered. The oxidized MXene is prepared through storage of fresh MXene nanosheets in an open vial for 1 month. The results confirm that the waterborne epoxy coating loaded with silane functionalized fresh MXene nanosheets (epoxy/F-MXene) has significantly higher barrier performance and anti-corrosion behavior than the sample modified with silane functionalized oxidized MXene nanosheets (epoxy/F-O-MXene). Indeed, the F-MXene nanosheets (with defect-free and large two dimensional morphology) are able to effectively inhibit the path of corrosive media as well as increment the epoxy matrix compactness compared to the F-O-MXene (with broken nanosheet morphology composed of TiO2 nanoparticles) due to rapid oxidation of the MXene nanosheets in the environment. Besides, the epoxy/F-MXene nanocomposite coating has slightly higher water contact angle and adhesion strength to the metallic substrate compared to the epoxy/F-O-MXene. The results of this research clearly reveal the importance of preventing MXene oxidation before application as nanofiller in the polymer coatings.

Preparation of waterborne polyimide‐modified epoxy resin with high thermal properties and adhesion properties

AbstractIn response to the theme of environmental protection and green development in the world in the recent years, waterborne epoxy resin has received more and more attention. Waterborne epoxy resin has lower toxicity, but its low toughness limits the application range of waterborne epoxy resin. Here, we first proposed a method of toughening waterborne epoxy resin with aqueous polyamide salt solution. In this article, a series of waterborne polyamic acid salts is used as modification polymer to improve the high‐temperature resistance and other properties of waterborne epoxy resins by copolymerization modification. Waterborne polyamic acid salt is dispersed uniformly in the epoxy resin. After curing, by compared with the pure epoxy resin, a semi‐interpenetrating network is formed, the cross‐linking density and the high‐temperature resistance of the material are increased, and the glass transition temperature increases from 105°C to 116°C. The storage modulus at 300°C increases from 6.15 to 15.76 MPa. Thermogravimetric Analysis results reveal that the corresponding temperatures of 5% and 10% weight loss increase from 403°C and 419°C to 415°C and 435°C, respectively. At the same time, the toughness of the imide chain segment and polar groups lead to the improved adhesion of the epoxy system, the peeling strength increase from 0.51 to 1.24 N cm−1, and the lap shear strength at high temperature (100°C) increase from 0.58 to 16.97 MPa. The water absorption decreases from 1.51% to 0.66%. The developed waterborne epoxy resin is expected to be used as a high‐temperature waterborne epoxy coating in high‐temperature coatings and other applications.

Different acid doped polyaniline waterborne epoxy coatings: Anticorrosion and passivation performance on 5083 Al alloy

In this work, sulfuric acid (H2SO4), hydrochloric acid (HCl), citric acid (CA), sulfosalicylic acid (SSA) and p-toluenesulfonic acid (PTSA) doped polyaniline and the corresponding PANI waterborne epoxy composite (PANI/WEP) coatings were successfully prepared to clarify the effects of the doped acid on passivation and anticorrosion performance of the coatings for 5083 Al alloy. The protection performance of the PANI/WEP coatings and its induced product film on Al alloy, as well as the redox ability of the doped PANI were comprehensively illustrated. Results demonstrated that the doping acid has a noticeable influence on the anticorrosion and passivation performance of the PANI/WEP coatings. PANI-SSA/WEP coatings and the induced product film exhibited the highest impedance value at low frequency compared with other coatings. The significantly enhanced protective performance of the PANI-SSA/WEP coatings is mainly attributed to the prominent oxidation-reduction reversibility of PANI-SSA which ensures sufficient passivation of the underlying Al substrate, in addition to the inhibition functionality of the released sulfosalicylic acid, which formed complexes with the substrate and facilitated the anticorrosion performance of the composite coatings.

Study on anticorrosion properties of reduced graphene oxide reinforced waterborne epoxy coating

Background: The traditional epoxy zinc-rich coating releases some harmful substances such as VOC during the service process, which pollutes the environment and causes great harm to people. Waterborne epoxy coating is an environmentally friendly, non-polluting potential coating. Objective: In this paper, a new reduced graphene oxide (RGO) reinforced waterborne epoxy coating is developed. Methods: Reduced graphene oxide (RGO) is obtained by modifying graphene oxide (GO). The addition of RGO to waterborne epoxy coatings is designed to improve the corrosion resistance of the coatings. The anticorrosion properties of the coating are investigated by electrochemical methods. Results: After the coating was immersed in 3.5wt% NaCl solution for 15 days, the corrosion current of the coating without RGO is greater than that of the coating containing RGO. Coatings with RGO have higher impedance modulus than coatings without RGO. Coating with 0.3% RGO has better corrosion resistance. After the coating was immersed in the salt solution for 55 days, the impedance modulus of the coating with 0.3% RGO increased by 349.11% compared to the coating without RGO. The coating with 0.3% RGO has the minimum corrosion current density, and the maximum polarization resistance and corrosion voltage. Conclusion: The waterborne epoxy coating with 0.3% RGO has the best anticorrosion.

Fabrication of BTA-loaded mesoporous silica-encapsulated ZSM-5 molecular sieve for enhancing anti-corrosion performance of waterborne epoxy coatings

Anti-corrosion coatings have been widely applied to protect metals against corrosion attacks. To improve the corrosive resistance, it is an effective way to employ porous materials loaded with corrosion inhibitors as fillers of coatings. One of the critical challenges is to advance the inhibitor loading capability of porous fillers. In this study, the mesoporous silica encapsulation is introduced on the ZSM-5 molecular sieves through the hydrolysis-condensation of tetraethyl orthosilicate (TEOS), followed by calcinated for removing the residual templates. The porous SiO2@ZSM-5 particles are used as micro-nano containers to load corrosion inhibitor benzotriazole (BTA). The morphologies, structures and BTA releasing behaviors are thoroughly investigated. Subsequently, the as-prepared BTA-SiO2@ZSM-5 particles serve as fillers for waterborne epoxy resin (WER) to fabricate BTA-SiO2@ZSM-5/WER composite coatings with long-term anti-corrosion property. The corrosive resistance behavior and mechanism are emphatically tested and analyzed. The results demonstrate that the introduction of mesoporous silica on the ZSM-5 molecular sieves significantly increases the specific surface area and pore volume, which is highly beneficial for improving the BTA loading capability of fillers as well as the anti-corrosion performance of coatings. Moreover, the great dielectric, mechanical and UV light-shielding properties of the composite coatings are confirmed. This study presents an effective and practical route for fabricating long-term anti-corrosive composite coatings.

Effects of the chemical structure of curing agents on rheological properties and microstructure of WER emulsified asphalt

Current researches in the pavement engineering field are neglecting the influence of the chemical structure of curing agents on rheological properties of waterborne epoxy resin (WER) emulsified asphalt. The length of molecular chain and the number of active groups will affect the rigidity and flexibility of WER emulsified asphalt. In this study, three curing agents (TETA\DETA\593) with obvious differences in molecular chain length and number of active groups were selected to modify emulsified asphalt. The three kinds of WER emulsified asphalt were subjected to the conventional properties, DSR, BBR, SEM and FITR test. The research has found that the addition of WER system makes emulsified asphalt produce three-dimensional network structure, which significantly improves the high-temperature performance and temperature sensitivity of emulsified asphalt. Whereas, the low-temperature performance of WER emulsified asphalt deteriorates. This indicates that the high-performance of WER emulsified makes it more suitable for the adhesive of micro surfacing or cold mix asphalt used in heavy-load traffic in medium and high temperature areas. Curing agent TETA has the greatest impact on WER emulsified asphalt at high-temperature while 593 has the least adverse influence on the low-temperature performance. The results demonstrate that the more active groups in the curing agent, the higher the crosslinking degree and complexity of the three-dimensional network structure in WER emulsified. And it will lead to the better high-temperature performance of WER emulsified. The longer the molecular chain of curing agent, the more flexible chains in WER emulsified. And it will lead to better flexibility of WER emulsified.