1、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.

2、The epoxy resin system: function and role of curing agents

Epoxy resins are frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating. In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties.

3、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.

Recycling Method of Cured Epoxy Resin Based on Physical Crushing and

The unique 3-D network structure, which is formed following the curing process, endows the epoxy resin (EP) composite with excellent properties. However, this structure also makes the EP difficult to degrade or recycle effectively. The present study employs a grinding-reconstruction strategy, utilizing physical grinding to transform EP waste into micrometer-sized powders. These powders are ...

DIC Develops Basic Technology for an Innovative Epoxy Resin Curing Agent

Tokyo, Japan—DIC Corporation today announced that it has succeeded in developing basic technology for a groundbreaking epoxy resin curing agent that resists heat up to over 200°C and can be recycled.

Epoxy curing agents

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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.

Current situation and development trend of reactive epoxy resin curing

Curing agent changes the properties of epoxy resin to obtain new curing products. With the development of industrial technology in China, there are many kinds of epoxy resin curing products, including polyamine curing agent, acid anhydride curing agent, polymercaptan curing agent and so on.

环氧树脂的固化剂 (Curing Agents for Epoxy Resin)_百度文库

环氧树脂的固化剂 (Curing Agents for Epoxy Resin)-BF3-胺络合物是一种催化型的固化剂，因此，它和树脂的配比很低（1%-5%）。 固化后的树脂HDT很高（150°C到170°C），特别是和一些酚醛型环氧反应后，HDT甚至可以达到230°C，而且电气性能优异，但其耐化性相对较差。

Recent Developments on Biobased Curing Agents: A Review

In order to achieve the desired properties, uncured epoxy resins must be converted to hard, infusible, thermoset networks in the presence of a variety of curing agents, also known as hardeners. This paper reviews recent advances in the development of curing agents from renewable materials.

In modern industrial and construction sectors, epoxy curing agents, as critical materials, are widely used in coatings, adhesives, composites, and other fields. with the expansion of these applications, the issue of disposing of waste epoxy curing agents has become increasingly prominent. Effectively recycling and treating these waste materials has emerged as an urgent problem to address. This article explores the importance, methods, and challenges of recycling epoxy curing agents,并提出相应的建议。

1. Importance of Recycling Epoxy Curing Agents

1. Environmental Protection: The disposal of epoxy curing agents not only occupies valuable land resources but also poses risks of soil and water contamination. Recycling and treatment can reduce landfill volume and mitigate environmental damage.
2. Resource Reutilization: Waste epoxy curing agents still contain organic components that can be extracted and reused through proper processing, enabling resource recovery.
3. Economic Benefits: Recycling reduces environmental pollution and lowers costs associated with purchasing new raw materials, offering significant economic advantages.

2. Methods for Recycling Epoxy Curing Agents

1. Physical Methods: These include crushing, sorting, and magnetic separation. Physical processes remove impurities such as metal particles and plastic fragments, improving the purity of recycled materials.
2. Chemical Methods: Acid washing, alkali washing, and solvent extraction are used to extract organic components (e.g., resins, pigments) from epoxy curing agents, facilitating resource recovery.
3. Biological Methods: Composting and fermentation degrade organic matter in epoxy curing agents, reducing environmental pollution.

3. Challenges

1. Technical Difficulties: Recycling epoxy curing agents requires specialized technical knowledge, and some challenges remain unresolved.
2. Cost Issues: The financial and human resources required for recycling pose significant burdens, particularly for small enterprises.
3. Regulatory and Policy Barriers: While regulations on waste management exist, practical enforcement remains inconsistent.

4. Recommendations

1. Strengthen Technological R&D: Increase investment in research to advance recycling technologies, reduce costs, and improve efficiency.
2. Improve Relevant Regulations: Governments should refine waste management policies, enforce stricter penalties for non-compliance, and ensure smooth implementation of recycling efforts.
3. Raise Public Awareness: Enhance public understanding of the importance of recycling epoxy curing agents through education and advocacy, fostering a supportive social environment.

recycling epoxy curing agents is crucial for environmental protection, resource conservation, and sustainable development. By adopting effective methods and strategies, we can address the challenges of waste epoxy curing agents and advance circular economy goals.