1、Mechanochemical Recycling of Acid Anhydride
Abstract 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.
2、Bona fide upcycling strategy of anhydride cured epoxy and reutilization
Herein, we demonstrated an efficient degradation of anhydride cured epoxy resin by aminolysis in aminoethanol without using any catalysts. The epoxy resin was fully decomposed at 160 °C in 4 h, resulting in two distinct high purity monomers (HHPA-OH and BPA-OH).
3、Suqian's Recycling of Epoxy Curing Agents
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.
4、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.
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.
A critical review of dynamic bonds containing curing agents for epoxy
Investigated the mechanical, thermomechanical, thermal, and recycling properties of the epoxy thermosets cured by developed curing agents. Addressed the challenges, opportunities and emerging trends in the field.
Mechanochemical Recycling of Acid Anhydride
Futhermore, REP powder can serve as an active filler into epoxy resin with other curing agents, such as curing agent 593 and 4,4-Diaminodiphenylmethane (DDM). By employing REP powder to enhance surface roughness in hydrophobic coating, a contact angle increased 144.1°.
Luoyang Epoxy Curing Agent Recycling
Curing can occur by either homopolymerisation initiated by a catalytic curing agent or a polyaddition/copolymerisation reaction with a multifunctional curing agent.
The carbonate exchange reaction strategy for chemical recycling of poly
Using chemical methods to depolymerize or convert plastic materials for recycling is a useful process to achieve a sustainable and circular plastic economy.
Recycling of Epoxy Resins with Degradable Structures or Dynamic Cross
This paper reviews the research progress of EPR with degradable or dynamically cross-linkable structures such as ester, acetal, and similar structures, Schiff bases, disulfide bonds, and Diels–Alder addition structures. This highlights the impact of these structures themselves on EPR recycling.
In today’s society, environmental protection and sustainable development have become global consensus. With the acceleration of industrialization, epoxy curing agents—a critical chemical raw material—generate waste during production and use, posing environmental challenges. Effectively recycling and reusing these agents to reduce pollution has emerged as an urgent issue. Anqing City has taken proactive steps through innovative practices and policies, achieving significant progress in recycling epoxy curing agents and promoting resource utilization.
As a widely used chemical material in construction, automotive, electronics, and other fields, epoxy curing agents pose challenges for direct recycling due to their complex chemical properties and high volatility. To address this, Anqing has introduced innovative recycling technologies.
Key Measures:
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Research and Technology Development: Anqing has invested in R&D collaborations with universities and research institutions to develop efficient recycling processes. By combining physical and chemical methods, impurities are removed more effectively, improving recovery rates while reducing energy consumption and emissions.
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Resource Reutilization: Recovered epoxy curing agents are processed into new products such as coatings and adhesives, minimizing waste and enabling circular economy practices.
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Infrastructure and Policy Support: Specialized recycling centers equipped with advanced technology have been established to centralize waste processing. Meanwhile, policies and technical guidance encourage enterprise participation, alongside stricter enforcement against illegal disposal.
Achievements and Challenges: Anqing’s recycling efforts have yielded remarkable results. Annual recovery volumes and utilization rates have risen consistently, alleviating environmental pressure and generating economic benefits for businesses. challenges remain, including the need to further optimize energy efficiency and environmental impact in recycling processes.
Future Outlook: Anqing aims to advance its recycling system through technological innovation and improved management. By fostering public and corporate engagement, the city aspires to contribute more broadly to environmental sustainability and global eco-friendly initiatives.
This translation maintains the original structure and key details while adapting terminology and phrasing for clarity and fluency in English. Let me know if further refinements are needed!
