1、Co
In summary, to enhance the toughness of epoxy resin adhesives, HTPB was introduced into the polyurethane system, successfully developing a solvent-free, room-temperature curing epoxy resin adhesive.
2、Thiourea modified low molecular polyamide as a novel room temperature
Firstly, a low molecular weight polyamide curing agent (LMPA) with low viscosity and high amine value was synthesized by amidation of sebacic acid with tetraethylenepentamine, then the synthesized curing agent was modified with thiourea to increase its reactivity at room temperature.
3、The Effect of Nonterminal Liquid Crystalline Epoxy Resin
A set of seven aromatic amines serving as curing agents was used to perform curing in fourteen different systems in order to assess the glass transition temperature (Tg) of the obtained polymer networks using DSC.
4、Effect of the Structure of Epoxy Monomers and Curing Agents: Toward
Herein, a liquid crystalline epoxy (LCE) monomer with a biphenyl mesogenic unit was first synthesized through an efficient one-step reaction.
5、Non
Compared with other curing methods, room temperature curing (curing temperature 15–40 C) has the advantages of low shrinkage caused by the thermal expansion difference, low internal stress, low energy consumption, and low toxicity.
Rational design of a room
In this study, we introduce a rational design strategy for high-strength, high-adhesion coatings by the room-temperature photoanionic curing of epoxy resins with a thiol cross-linker without void concern, making use of a PBG that can generate a superbase without decarboxylation (Scheme 1).
Mechanical and thermal properties of a room temperature curing epoxy
A novel self-exothermic curing agent, effectively able to cure the diglycidyl ether of bisphenol-A (E51 epoxy resin) at room temperature, has been synthesized by blending 4, 4’-diaminodiphenylmethane (DDM) and acrylic acid (AA).
Preparation and Properties of Epoxy Adhesives with Fast Curing at Room
ABSTRACT: Developing a highly eficient multifunctional epoxy adhesive is still an enormous challenge, which can rapidly cure at room temperature and has excellent low-temperature resistance performance and is crucial for the epoxy adhesive and electrical sealing fields during severe cold seasons.
The Effect of Nonterminal Liquid Crystalline Epoxy Resin Structure and
A set of seven aromatic amines serving as curing agents was used to perform curing in fourteen different systems in order to assess the glass transition temperature (T g) of the obtained polymer networks using DSC.
(PDF) Nonterminal liquid crystalline epoxy resins as structurally
Novel nonterminal liquid crystalline epoxy resin has been synthesized, and its structure and nature have been determined via nuclear magnetic resonance (NMR) and polarized optical microscopy...
In modern industry, the curing process of materials is a critical step in ensuring product performance and quality. Epoxy resins are widely used in electronics, aerospace, automotive manufacturing, construction, and other fields due to their excellent mechanical properties, electrical insulation, and chemical stability. traditional epoxy resin curing typically requires high-temperature environments, which not only increases production costs but also imposes higher safety demands on equipment and operators. developing an epoxy material that can cure rapidly at room temperature is particularly important.
The development of this non-crystalline epoxy room-temperature curing agent aims to address the challenges encountered in conventional epoxy curing processes. Through a specially formulated design, it enables rapid and uniform curing reactions at ambient temperatures, significantly improving production efficiency and reducing energy consumption.
Technical Principles and Characteristics
The core of this room-temperature curing agent lies in its unique chemical structure. Compared to traditional epoxy curing agents, it contains specific functional groups that promote cross-linking reactions in epoxy resins at lower temperatures. This reaction does not require external heating; instead, it generates heat through the chemical process itself, achieving autothermal curing. This self-heating mechanism greatly simplifies the process, allowing curing to proceed at room temperature or slightly above, while enhancing operational flexibility and safety.
Practical Applications and Benefits
In practical use, this non-crystalline epoxy curing agent offers multiple advantages. First, it drastically reduces curing time and energy consumption, which is crucial for time-sensitive projects. Second, the mild curing conditions lower potential health risks for operators and reduce equipment damage caused by high temperatures. Additionally, its use helps minimize environmental pollution by reducing reliance on heating equipment, thereby cutting emissions of harmful gases and greenhouse gases.
Future Prospects
Although this non-crystalline epoxy curing agent has achieved success, its full potential in industrial applications remains largely untapped. Future research could focus on further accelerating curing speed, optimizing post-curing physical and chemical properties, and adapting to diverse epoxy resin types for different industries. With advancements in new material science, it is reasonable to expect the emergence of more efficient, eco-friendly epoxy curing solutions, driving greener and more sustainable development across sectors.
the development and application of non-crystalline epoxy room-temperature curing agents have resolved technical challenges in traditional epoxy curing and sparked a revolutionary transformation in industrial production. With ongoing technological innovation, these agents are poised to play an increasingly vital role in future manufacturing.
