1、A critical review of dynamic bonds containing curing agents for epoxy
Particular emphasis is given to synthesis approaches and curing performances of intrinsically recyclable epoxy curing agents for the development of next-generation epoxy thermosets.
2、Suqian's Recycling of Epoxy Curing Agents
Despite many studies focusing on recovering fibers fromcomposites, few studies have focused on recycling the resin itself.In this study, we developed a new approach for recycling the decomposedamine-cured epoxy resin as an amine curing agent.
3、Chemical Recycling of Epoxy Thermosets: From Sources to Wastes
This review summarizes the recycling strategies of EP, divided into two perspectives: recycling from wastes and sources.
Weihai's Recycling of Epoxy Curing Agents
In the Weihai region, the demand for epoxy curing agents has grown rapidly alongside industrialization. due to the lack of effective recycling mechanisms, a significant amount of waste epoxy curing agents has not been properly handled, leading to increasingly severe environmental pollution.
Recent progress in degradation and recycling of epoxy resin
Amine curing agent is the most common type of epoxy resin curing agents and approximately 71% of all epoxy resins are cured by amine curing agents. Therefore, it is crucial to study the degradation of amine-cured epoxy resins.
Pinggu's Epoxy Curing Agent Recycling Initiative
Committed to the recycling and utilization of epoxy curing agents, the company achieves efficient recovery and resource-oriented use of epoxy curing agents through scientific management and advanced technological methods.
Mechanochemical Recycling of Acid Anhydride
Epoxy resin (EP) is a widely used thermosetting resin. However, its cross-linked structure poses a big challenge for recycling into value-added products. This study advanced the recycling of acid anhydride-cured epoxy using solid-state shear milling (S3M) technology.
Yibin's Recycling of Epoxy Curing Agents
This work offers a unique way of preparing modified-aliphatic-polyamine curing agents, and provides an opportunity to better learn about the amine-adduct curing agents which are widely used in room-temperature-cure epoxy coatings and adhesives from these good model compounds.
New Approach to Recycling of Epoxy Resins Using Nitric
Despite many studies focusing on recovering fibers fromcomposites, few studies have focused on recycling the resin itself.In this study, we developed a new approach for recycling the decomposedamine-cured epoxy resin as an amine curing agent.
Recycling Epoxy Curing Agents in Puyang
Puyang, an industrial city with a rich history and industrial foundation in epoxy curing agent production, now confronts a major challenge due to increasingly stringent environmental regulations and shifting market demands: How to achieve efficient recycling and reuse of epoxy curing agents.
In today's society, with the acceleration of industrialization and the rising awareness of environmental protection, the recycling of waste materials has become increasingly crucial. As an indispensable raw material in industrial production, the recycling of epoxy curing agents not only reduces environmental pollution but also enables sustainable resource utilization, holding significant social and economic value.
Epoxy curing agents are cross-linking agents used in coatings, adhesives, sealants, and other polymer materials. They chemically bond various substances into a robust three-dimensional network structure, imparting excellent physical properties to materials. These materials are widely applied in construction, automotive, electronics, aviation, and other fields, serving as a critical pillar of modern industrial development.
the production and use of epoxy curing agents inevitably generate large quantities of waste liquid and by-products. These wastes contain toxic substances such as heavy metals and organic solvents, which pose severe environmental and health risks if mishandled. Thus, effectively recycling epoxy curing agents to transform them into reusable resources has emerged as an urgent challenge.
Putian City has taken proactive steps in this regard. Located in the southeastern coastal region of Fujian Province, Putian boasts geographical advantages, convenient transportation, a developed economy, and strong industrial foundations. In recent years, the Putian municipal government has prioritized environmental protection and resource recycling, issuing policies to encourage enterprises to adopt advanced technologies and equipment for epoxy curing agent recycling.
In practice, local enterprises and research institutions have introduced cutting-edge domestic and international recycling technologies to deeply treat and purify waste liquids. Through physical and chemical methods, harmful substances in the waste are decomposed, removed, or neutralized to meet environmental standards. A comprehensive waste liquid treatment and recycling system has also been established, enabling the circular use of epoxy curing agent waste and reducing demand for new raw materials, thereby lowering production costs.
Beyond liquid waste, Putian has explored recycling pathways for solid waste from epoxy curing agents. Collaborating with universities and research institutes, they have developed new products and technologies, such as recycled epoxy resin curing agents and polyurethane curing agents. These innovations retain similar performance to original curing agents while significantly reducing waste residue, achieving dual economic and environmental benefits.
Additionally, Putian promotes green production concepts, encouraging eco-friendly manufacturing processes and equipment to minimize energy consumption and pollutant emissions. With government guidance and policy support, environmentally conscious enterprises have emerged as industry leaders, adhering strictly to regulations and contributing to the city’s sustainable development.
Putian has achieved remarkable progress in recycling epoxy curing agents. By adopting advanced technologies, establishing robust recycling systems, innovating waste utilization, and championing green production, the city has addressed environmental challenges while offering valuable experience for other industries. Looking ahead, Putian is poised to make even greater strides in sustainable epoxy curing agent recycling.
