1、A review of the curing rate and mechanical properties of epoxy resin on
Abstract The curing rate of epoxy resins is a critical parameter that significantly influences the curing properties of polymer matrix composites (PMCs). It plays a vital role in meeting high-performance requirements, particularly in achieving rapid development of high modulus.
2、Real
Real-time non-destructive characterization of epoxy resin curing kinetics and mechanical response for enhanced manufacturing quality control - ScienceDirect
3、Influence of different composite curing agents on the rapid curing
In particular, effective formulations are designed for mixing fast and slow curing agents, studying their effects on the curing behavior, curing quality, and mechanical properties of epoxy resins and elucidating their influence mechanisms.
Surface Chemistry and Molecular Dynamics of Epoxy Resin
In this study, we investigate the main reactions occurring on the surface of DEGBA/DEGBF epoxy resin following curing, post-curing, and thermal post-curing processes using Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS).
The epoxy resin system: function and role of curing agents
In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendli-ness and mechanical functionality have emerged as vulcanization properties.
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.
A critical review of dynamic bonds containing curing agents for epoxy
These curing agents were used to cure the conventional DER 331 epoxy resin, which showed excellent curing performance, thermal (T g ∼120 ᵒC) and mechanical (tensile strength ∼70.6 MPa and Young's modulus ∼3103 MPa) properties as compared to traditional epoxy thermosets (Fig. 5 b and d).
The epoxy resin system: function and role of curing agents
In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties.
Improved curing performances of epoxy resin by a structure
The curing kinetics of liquid epoxy resin (E-51) in the presence of curing agent was studied by differential scanning calorimetry (DSC), and the curing process of cured film was observed by light microscope.
Thermal curing of epoxy resins at lower temperature using 4
To expand the application fields of epoxy resins, there has been a growing demand for thermal latent curing agents that combine a lower curing temperature with a long storage lifetime for a one-component epoxy formulation.
Epoxy resin is a critical high-molecular-weight material widely used in construction, electronics, automotive manufacturing, and other fields. The selection of curing agents is crucial during the application of epoxy resin, as it directly impacts the final performance of the material and the construction process. Among the parameters, the volatilization time of curing agents is a key factor. It determines the rate and amount of volatile organic compounds (VOCs) released during curing, which in turn affects environmental safety and product quality. This article analyzes the importance and implications of volatilization time from multiple perspectives.
I. Definition and Importance of Volatilization Time
Volatilization time refers to the duration over which a curing agent is released into the air from its packaging. For epoxy resin, this parameter not only influences air quality in the working environment but also affects the effectiveness of the curing agent and the final product’s performance.
II. Impact on Construction Environment
- Air Quality Improvement: Curing agents with shorter volatilization times reduce VOC concentrations in the air more rapidly, minimizing potential health hazards to workers and improving the working environment.
- Construction Efficiency: Faster-volatilizing curing agents accelerate construction speed and productivity, which is critical for projects requiring rapid completion.
- Product Quality Assurance: Shorter volatilization times ensure uniformity and stability in product quality, avoiding defects caused by excessively rapid volatilization.
III. Impact on Product Quality
- Surface Quality: Curing agents with short volatilization times produce smoother surfaces, reducing defects such as bubbles and pinholes, and enhancing aesthetic appeal.
- Mechanical Performance: Rapid volatilization promotes the formation of denser cross-linked networks, improving mechanical properties like tensile and compressive strength.
- Heat Resistance: Shorter volatilization times enhance thermal stability, enabling the material to maintain physical and chemical integrity at high temperatures.
IV. Methods to Control Volatilization Time
Volatilization time can be managed by adjusting formulations, storage conditions, or application environments. For example, low-VOC curing agents or sealed storage can reduce volatilization. Additionally, optimizing construction processes to shorten curing times can minimize volatilization.
V. Practical Considerations
When selecting epoxy curing agents, volatilization time must be carefully evaluated. For highly volatile agents, adequate ventilation is essential to protect worker health and safety. Adherence to usage guidelines and recommended dosages prevents waste and environmental pollution.
The volatilization time of epoxy curing agents is a critical determinant of their effectiveness. Proper management can maximize their advantages while mitigating environmental and health risks. understanding and evaluating volatilization time is essential for optimizing performance and safety in epoxy resin applications.
