1、High heat Resistance, Strength, and toughness of epoxy resin with
Epoxy resin (EP) is a thermosetting polymer with a three-dimensional network structure formed by the reaction of epoxy prepolymers with curing agents. It is known for its strong adhesion, good chemical stability, high mechanical strength, and ease of processing and shaping.
2、不同固化剂复配的耐高温环氧树脂体系性能
Non-isothermal DSC was used to study the reaction activation energy of different contents and kinds of the mixed curing agents. The effects of the contents and kinds of the mixed curing...
3、Low viscosity and low temperature curing reactive POSS/epoxy hybrid
Herein, in order to satisfy the practical requirements in production to cure at low temperatures and develop a new high-temperature resistant and high toughness epoxy, this study firstly determined a low viscosity and low-temperature curable (Tcuring ≤ 100 °C) epoxy resin system (E-51/MHHPA/DMBA).
Yellowing
Yellowing-resistant epoxy curing agents are a special category of epoxy curing agents that maintain stable performance over extended use and resist yellowing phenomena.
Non
With the rapid development of 5G communications and new energy industries, yellowing-resistant epoxy thermal initiators are evolving towards low-temperature activation and photothermal dual response.
High
The development of high-temperature powder coatings using modified epoxy resins continues to evolve, combining innovation in resin chemistry, curing agents, and nano-fillers.
Curing and High
Herein, a silicon-hybridized epoxy resin, amenable to room-temperature curing and designed for high-temperature applications, was synthesized using a sol–gel methodology with silicate...
Preparation, characterization, and curing kinetics of elevated and
In this paper, the modified polyurethane resin E-42 and silane coupling agent KH-560 were used to toughen AG-80, and the viscosity, gel time, thermal stability, and curing reaction mechanism of the blended resin system were studied based on the best overall performance obtained.
X
X-48-1801 is a silicone-based non-yellowing polyisocyanate curing agent. When cold blended with polyisocyanate curing agents, it improves various coating performance, especially weather resistance and oil repellency.
High and Low Temperature Resistant Epoxy Curing Agents
In an aerospace project requiring materials stable from -60°C to +150°C, a customized high- and low-temperature resistant epoxy curing agent enabled the epoxy to maintain consistent performance.
In modern industrial manufacturing, the performance of materials directly impacts product quality and reliability. This is particularly critical in fields such as electronics, automotive, and aerospace, where material requirements for temperature resistance, chemical stability, and long-term physical property retention are exceptionally high. Epoxy resins, as a key class of thermosetting plastic matrix materials, offer excellent mechanical strength and electrical insulation after curing. a significant drawback remains: they tend to yellow under high-temperature conditions, compromising aesthetics and service life. Consequently, developing a high-temperature resistant, non-yellowing epoxy curing agent has become a major industry demand.
Epoxy curing agents play a pivotal role in epoxy resin systems, determining curing temperature, speed, and the final physical and chemical properties. Traditional curing agents, primarily aliphatic or aromatic amines, promote rapid curing at room temperature. they decompose under high temperatures, releasing toxic gases and gradually oxidizing over time, leading to yellowing and performance degradation.
To address these challenges, researchers and enterprises have invested substantial effort in innovation. By incorporating novel functional fillers such as organosilicon compounds and phosphorus compounds, both heat resistance and yellowing resistance can be improved. For instance, modified organosilicon resins effectively raise the upper temperature limit of epoxy resins, enabling applications in harsher environments. Optimizing curing agent ratios and processing conditions further enhances system performance while mitigating yellowing.
Beyond material modifications, curing processes can be adjusted to lower temperatures and extend curing times, reducing yellowing risks. Additionally, auxiliary measures like adding UV absorbers and antioxidants improve aging resistance and yellowing prevention.
High-temperature, non-yellowing epoxy curing agents have found widespread use. In aerospace, their superior heat and wear resistance make them ideal structural materials. In electronic packaging, their electrical insulation ensures device safety. In automotive parts, their strength and durability enhance component lifespan.
Despite existing products, there is still room for improvement. Future advancements in materials and technology will likely expand the application scope of these curing agents, providing robust material support across industries.
research and application of high-temperature, non-yellowing epoxy curing agents represent a challenging yet promising field. Through continuous technological innovation and material optimization, we can overcome current limitations, advance epoxy and curing agent technologies, and meet growing market demands.
