1、Research Progress in Waterborne Epoxy Resin Curing Agent
The effect of the compatibility and reactivity of waterborne epoxy curing agents on the curing films and its control methods were also discussed，which provided guidance for selection of suitable curing agents and development of waterborne epoxy curing agent with excellent performance.
2、Self
The careful selection of epoxy resins, curing agents, and additives, combined with the innovative self-curing mechanism, allows these coatings to offer the performance benefits of traditional epoxy systems while meeting modern environmental and application requirements.
3、Preliminary Results on Preparation and Performance of a Self
The infrared absorption spectra of E20, EP1K, and the water-based epoxy curing agent were compared and analyzed. The coating properties of the waterborne epoxy varnish, which was based on water-based epoxy curing agents to emulsify and cure the resin E44, were systematically tested.
4、Stable waterborne epoxy resins: Impact of toughening agents on coating
The subsequent discussion focuses on the dynamic mechanical properties of the waterborne epoxy cured films and the low-temperature film-forming capabilities of the waterborne epoxy varnishes; it is concluded with an assessment of the application performance of the waterborne epoxy metal primers.
Synthesis and properties of a nonionic water
Water-based epoxy curing agents can be divided into two categories: type I and type II. Type I epoxy systems require their curing agents to have the functions of curing and emulsifying. The epoxy resin is a liquid or emulsion, and the curing agent is a water-soluble amine curing agent.
Preliminary Results on Preparation and Performance of a Self
The coating properties of the waterborne epoxy varnish, which was based on water-based epoxy curing agents to emulsify and cure the resin E44, were systematically tested.
Synthesis of a waterborne epoxy curing agent based on
Polyether polyols can improve the performance of waterborne epoxy curing agent. In this paper, intermediates were synthesized from polyether triols with epoxy resin E-51 and introduced into the epoxy curing agent by reacting with TETA.
Journal of Applied Polymer Science
This paper focuses on the process of synthesizing the intermediates. The 2K waterborne epoxy coating film prepared with polyether triols-modified waterborne epoxy curing agent exhibits desirable corrosion protection capacity and neutral salt spray resistance up to 600 h.
Waterborne Epoxy Curatives
Waterborne epoxy coatings not only perform better but are easier and quicker to apply because they have no roller pickup or drag. With film thickness as low as 5 mils dry film thickness, faster coverage rates are achieved, saving time, material and labor costs. With this cost-in-use benefit, epoxy pro-tection is now more afordable.
Synthesis of a waterborne epoxy curing agent based on
This paper focuses on the process of synthesizing the intermediates. The 2K waterborne epoxy coating film prepared with polyether triols‑modified waterborne epoxy curing agent exhibits desirable corrosion protection capacity and neutral salt spray resistance up to 600 h.
In modern industry, epoxy resins are widely used in composite material production due to their excellent adhesive properties, mechanical strength, and chemical resistance. selecting the appropriate curing agent is critical to maximizing the performance of epoxy resins. This article explores the selection criteria for waterborne epoxy curing agents and key considerations for their practical applications.
I. Basic Concept of Waterborne Epoxy Curing Agents
Waterborne epoxy curing agents are chemical substances designed to facilitate the curing reaction of waterborne epoxy resins. They typically contain reactive hydrogen atoms or functional groups, such as hydroxyl (-OH) or carboxyl (-COOH) groups, which can chemically react with the epoxide groups in epoxy resins, thereby accelerating the curing process. Compared to traditional solvent-based epoxy curing agents, waterborne curing agents offer advantages such as low volatile organic compound (VOC) emissions and environmental friendliness.
II. Criteria for Selecting Waterborne Epoxy Curing Agents
- Curing Speed and Time: Choose curing agents with fast curing speeds and short processing times to ensure production efficiency.
- Curing Temperature Range: Consider the minimum and maximum usable temperatures of the curing agent to avoid incomplete curing at low temperatures or material degradation at high temperatures.
- Post-Cure Material Performance: Evaluate key performance indicators such as hardness, compressive strength, and wear resistance to meet application requirements.
- Cost-Effectiveness: Compare prices of different curing agents, balancing material costs and production cycles to select cost-efficient options.
- Compatibility: Ensure compatibility between the curing agent, epoxy resin, and other additives to prevent adverse reactions.
- Environmental Safety: Prioritize curing agents that comply with environmental standards to minimize hazardous emissions.
- Ease of Operation: Consider storage stability, solubility, and compatibility with other chemicals to simplify processing steps.
III. Practical Considerations in Application
- Substrate Type: Different substrates (e.g., metal, ceramic, glass) may require specific curing agents due to varying reactivity.
- Application Environment: Account for environmental conditions such as humidity, temperature, and chemical exposure that the cured coating or structure will endure.
- Application Method: Adjust dilution ratios and usage methods based on application techniques (e.g., spraying, dipping, brushing).
- Safety: Ensure the curing agent is safe for use, minimizing health risks to humans and avoiding fire hazards.
Selecting waterborne epoxy curing agents requires comprehensive consideration of multiple factors to achieve desired material performance. By understanding the characteristics and适用范围 (application scope) of curing agents and aligning them with specific application needs, the optimal choice can be made to enhance product quality and application outcomes. With increasingly stringent environmental regulations and growing demand for green products, the selection and application of waterborne epoxy curing agents will become a significant trend in future industrial production.
