1、Amino Acids as Bio

This shows that amino acids as curing agents for epoxy resins result in thermosets with a wide range of thermo-mechanical properties and that the choice of curing agent has significant influence on the thermoset’s properties.

2、Using thermokinetic methods to enhance properties of epoxy resins with

Using biomolecules instead of synthetic curing agents can significantly reduce composites' toxicity and petrol-based carbon content. This study considerably exceeds the thermo-mechanical...

3、Effect of the Aromatic Amine Curing Agent Structure on Properties of

Abstract Epoxy resin is one of the commonly used matrixes of syntactic foams as a buoyancy material, the curing agents of which affect some of the properties for syntactic foams.

Amino Acids as Bio

Therefore, the mechanical properties of diglycidyl ether of bisphenol a (DGEBA) cured with either L-arginine, L-citrulline, g-aminobutyric acid, L-glutamine, L-tryptophan, or L-tyrosine were investigated to determine the potential of amino acids as bio-based curing agents for epoxy resins.

The process of curing epoxy–amine resins with a composition gradient in

The purpose of this work was to develop a method for controlling the exothermic effect during the curing of large-scale products through the application of dual-curing systems and the intentional formation of a composition gradient in the resulting resins.

Interplay of curing and thermal degradation in epoxy resins cured with

Abstract Bio-based alternatives for epoxy resin curing agents are a necessity for fiber reinforced polymer composites to become more sustainable. Here, the precise knowledge about the optimal curing cycle and its influence on the thermoset's mechanical properties are imperative.

Evaluation of Novel Bio

In order to obtain an environmentally friendly epoxy system, L-tryptophan and guanine were investigated as novel green curing agents for the cross-link of diglycidyl ether of Bisphenol A (DGEBA) as a generic epoxy resin model of synthetic and analogous bio-based precursors.

Novel Thermal Latent Curing Agents for Epoxy Resins Based on Dual

Herein, we present a dual-locked thermal latent curing agent based on aminopyridines, protected by amidation and N-oxidation, designed to enhance both pot life and final curing efficiency.

Effects of the amine/epoxy stoichiometry on the curing behavior and

Effects of amine/epoxy stoichiometry on curing behavior of MWCNTs-NH 2 /epoxy systems were studied. The catalytic effect of MWCNTs-NH 2 was weakened by increasing amine/epoxy stoichiometry. For the system with excess epoxy, the etherification reaction was promoted by adding MWCNTs-NH2.

Evaluation of Novel Bio

Abstract: In order to obtain an environmentally friendly epoxy system, L-tryptophan and guanine were investigated as novel green curing agents for the cross-link of diglycidyl ether of Bisphenol A (DGEBA) as a generic epoxy resin model of synthetic and analogous bio-based precursors.

In the vast field of modern materials science, epoxy resins and their derivatives are highly favored due to their excellent physical and chemical properties. during actual manufacturing and application processes, the excessive use of amino curing agents often poses challenges for engineers. This article delves into the issue of excess amino curing agents in epoxy resin systems, analyzes their impact on material performance, and proposes corresponding solutions.

I. Overview and Causes of the Problem

As an important thermosetting resin, epoxy resin is widely used in electronics, automotive, construction, and other fields. Amino curing agents, which act as catalysts in the curing reaction, accelerate the cross-linking of the resin, enhancing its mechanical strength, heat resistance, and chemical resistance. when amino curing agents are used in excess, they not only waste valuable resources but also lead to a series of performance issues.

The primary reasons for the excessive use of amino curing agents include: (1) misunderstandings of resin-to-curing agent ratios by operators; (2) lack of precise control over the curing process; and (3) misconceptions or misuse of curing agent properties. These factors collectively result in the overuse of amino curing agents in resin systems.

II. Harmful Effects of Excessive Use

1. Performance Degradation: Excess amino curing agents reduce the performance of epoxy resin matrices. For example, they decrease the cross-linking density of the resin, leading to reduced mechanical properties and heat resistance. Additionally, excessive curing agents negatively impact the electrical insulation properties of the resin, increasing its dielectric constant and dissipation factor.

2. Increased Costs: Excess amino curing agents result in wasted raw materials, raising production costs. achieving the desired performance metrics requires more curing agents, further escalating the final product’s cost.

3. Environmental Impact: Excess curing agents may not fully degrade, posing environmental hazards. This not only disrupts ecological balance but also threatens the health of operators.

III. Mitigation Strategies

1. Precise Proportioning: Adhere strictly to resin-to-curing agent ratios, ensuring accurate measurement of each batch according to design requirements. Rigorous quality control prevents excessive curing agent usage.

2. Precise Control: During production, tightly regulate temperature, humidity, and other conditions to optimize curing agent effectiveness. Automated equipment and monitoring systems improve efficiency and reduce human error.

3. Knowledge Training: Enhance operator training to deepen their understanding of epoxy resin formulations. Regular technical exchanges and knowledge-sharing help operators master correct usage methods and techniques.

IV. Prospects and Recommendations

While the issue of excess amino curing agents is complex, effective preventive measures and improvements can largely mitigate it. Looking ahead, with advancements in new materials technologies, we can expect more precise and efficient applications of epoxy resins and amino curing agents.

To address this problem, we recommend:

• Strengthening research and development of resin systems to optimize formulations and processing parameters, improving cost-performance ratios.
• Establishing robust quality management systems to ensure raw material quality from the source.
• Encouraging technological innovation to explore more environmentally friendly and efficient curing agent alternatives.
• Fostering industry collaboration to advance the development and application of epoxy resin and amino curing agent technologies.

the issue of excess amino curing agents in epoxy resin systems warrants attention. By implementing precise proportioning, control, and training, we can effectively resolve this challenge and drive the application and development of epoxy resins and amino curing agents across industries. Let us work together to build a better future!