1、Synthesis of a novel bio
In this study, bio-based curing agent MYM, commercially available petroleum-based curing agents MTHPA and MHHPA were used to cure the epoxy resin E51, respectively, and the cured EP/MYM, EP/MTHPA, and EP/MHHPA were obtained.
2、Preparation and curing behaviour of microencapsulated curing agents for
This study aimed to improve control over the curing behaviour of cold-mixed epoxy asphalt by using a microencapsulated curing agent (2-PZ@PC). Prepared through solvent evaporation, the 2-PZ@PC microcapsules had 2-phenylimidazole as the core material and polycarbonate as the shell material.
3、Curing Agents for Epoxy Asphalt Paint
Various physical and mechanical tests, including initial mixing viscosity (IMV), forming strength, and cured material hardness, were conducted to identify the optimal curing agent, with G-07 epoxy curing agent proving to be the most effective.
4、Influence of curing agent ratio, asphalt content and crosslinking
The results show that the raise of the crosslinking degree and the proportion of anhydride curing agent increased the Tg of epoxy asphalt, impairing the low temperature performance. The increase in asphalt content was beneficial to the stability of the epoxy asphalt.
(PDF) Study on the Curing Process of Epoxy Asphalt
FTIR was utilized to track the functional group changes in epoxy resin (part A) and asphalt containing a curing agent (part B) at different curing times. It is proposed that the curing...
Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two-stage curing process with a thermoplastic-like intermediate. This uncommon behavior enables extrusion and fabrica...
Synthesis of a novel curing agent containing dynamic disulfide bonds
In this study, a terminal amino polyether epoxy curing agent, namely APS, containing dynamic disulfide bonds was synthesized and combined with epoxy resin and asphalt to produce SEA with repairability and recyclability.
Preparation and curing behaviour of microencapsulated curing agents for
This study aimed to improve control over the curing behaviour of cold-mixed epoxy asphalt by using a microencapsulated curing agent (2-PZ@PC). Prepared through solvent evaporation, the 2-PZ@PC microcapsules had 2-phenylimidazole as the core material and polycarbonate as the shell material.
Preparation and curing behavior of microencapsulated curing agents for
ABSTRACT：This study aimed to improve control over the curing behavior of cold mix epoxy asphalt by using a microencapsulated curing agent (2-PZ@PC). Prepared through solvent evaporation,...
The effect of composite curing agent ratio on the photooxidative aging
In order to explore the effect of composite curing agent ratio on the photooxidative aging behavior of epoxy asphalt with an acidic composite curing system, three curing agent ratios of epoxy asphalt were prepared to obtain different cross-linking network densities.
In modern construction engineering, epoxy asphalt, as a high-performance composite material, is widely used in the construction and maintenance of infrastructure such as roads, bridges, and airport runways due to its excellent durability and crack resistance. The curing agent, an indispensable component of epoxy asphalt, directly impacts the quality and service life of the final product. This article aims to explore in depth the mechanisms, classifications, selection, and applications of curing agents for epoxy asphalt, providing references for engineers and technical professionals in related fields.
I. Mechanism of Action of Curing Agents
Epoxy asphalt is a material composed of epoxy resin and asphalt. Its molecular structure contains a large number of epoxy groups, which can undergo cross-linking reactions with the carbon chains in asphalt, forming a three-dimensional network structure. This significantly enhances the material’s strength and toughness. The curing agent acts as a catalyst in this process, accelerating the polymerization reaction of the epoxy groups and promoting the transition of the material from a liquid to a solid state.
II. Classification of Curing Agents
Based on chemical properties, curing agents are primarily divided into two categories: organic and inorganic. Organic curing agents include aliphatic polyamines, aromatic polyamines, anhydrides, and anhydride esters. Inorganic curing agents include silane coupling agents, aluminum ester coupling agents, and phosphates. Different types of curing agents have distinct characteristics and are suitable for preparing epoxy asphalt with varying performance requirements.
III. Selection of Curing Agents
Choosing the appropriate curing agent is critical to ensuring the quality of epoxy asphalt. First, the type of curing agent should be selected based on the application environment and performance requirements of the epoxy asphalt. For example, organic curing agents are preferred for scenarios requiring high strength and wear resistance, while inorganic curing agents are more suitable for environments demanding good weather resistance. Second, the dosage of the curing agent is also an important consideration, as excessive or insufficient amounts may affect the quality and performance of the final product.
IV. Application of Curing Agents
In practical construction, the use of curing agents must strictly follow product instructions to ensure smooth workflow and stable product quality. Additionally, environmental factors such as temperature and humidity should be considered, as these may influence the performance of the curing agent and the reaction rate of the epoxy asphalt.
Curing agents are key to ensuring the superior performance of epoxy asphalt. By thoroughly understanding their mechanisms, rationally selecting types and dosages, and strictly adhering to usage guidelines, the comprehensive performance of epoxy asphalt can be effectively enhanced to meet the demands of complex engineering projects. In the future, with advancements in materials science and deeper engineering practice, the research and application of curing agents will become more refined, providing robust support for further improving the performance of epoxy asphalt and expanding its application fields.
