1、Phosphorus
To prepare epoxy resins (EP) with flame retardancy and remolding capability, novel amine curing agents (DDPM and DDPS), which incorporate phosphonates and bis-Schiff bases, were used to replace DDM partially or completely for EP curing.
2、application of 4,4′
ddm, with its chemical formula c 13 h 14 n 2, is a solid aromatic diamine characterized by two amine groups attached to phenyl rings connected by a methylene bridge. this structure contributes to the high glass transition temperature (t g) and excellent chemical resistance of the resulting epoxy network. however, ddm also presents certain challe...
3、Latent curing agent DDM
A microcapsule-type latent curing agent is prepared by solvent evaporation method with diaminodiphenylmethane (DDM) as the core material and PMMA as the wall material.
环氧固化剂网知识：对，对一二胺基二苯基甲烷（简称二胺）
该产品主要用于电器元件，电容器包封上，但是由于耐温性能佳及配料后使用时间长（8～10小时）等特点，亦可在玻璃钢及化工防腐上应用。 介绍环氧树脂，固化剂，促进剂，稀释剂，阻燃剂，填充剂，消泡剂，脱模剂，偶联剂，分散剂，抗氧剂 ，环氧新闻等化工原料。
The effect of 4,4′
4,4′-Diaminodiphenylmethane (DDM), also known as methylene dianiline (MDA), is an aromatic diamine with the chemical formula C 13 H 14 N 2. It is a solid at room temperature and is typically used as a curing agent for epoxy resins in high-performance applications.
Curing Temperature of Epoxy Resin with DDM Curing Agent
Specialty Epoxy Resin DDM Curing Agents: Designed for specialized applications such as aerospace, military, and other high-demand fields, these curing agents have variable curing temperature ranges depending on the complexity and harshness of the application environment.
Epoxy Curing Agent, DDM
DDM is an important chemical intermediate, which is mainly used for chain extender of polyurethane elastomer, epoxy resin curing agent, floor paint, battery adhesive, electronic potting adhesive, heavy-duty anti-corrosion coating, especially suitable for potting and pouring of large parts.
The Effect of Different Diluents and Curing Agents on the Performance
In this work, two different reactive diluents, 1,4-butanediyl diglycidyl ether (14BDDE) and butyl glycidyl ether (BGE), were applied to dilute the coating. Additionally, T403 and 4,4′-diaminodiphenylmethane (DDM) as two corresponding curing agents were used to cure the epoxy resin.
Reaction mechanism, cure behavior and properties of a multifunctional
In practical applications, to achieve above superior all-round properties, a curing process is desperately needed to convert the original epoxy resins from monomers and/or oligomers into a permanently highly crosslinked three-dimensional network macromolecule in the presence of suitable curing agents under optimal curing and processing ...
Synthesis and curing properties of fluorinated curing agent for epoxy
A novel fluorinated diamine curing agent (AFPCO) was synthesized from natural isoflavone daidzein, used to cure hydrogenated epoxy resin (DGEHBPA) and tested against commercially available DGEHBPA cured with 4,4′-diaminodiphenylmethane (DDM).
Epoxy curing agent powder DDM is an indispensable material in modern industrial and construction fields, and its importance is self-evident. It not only plays a critical role in the curing process of epoxy resins but also significantly contributes to improving product performance and reducing costs. This article provides an in-depth exploration of various aspects of epoxy curing agent powder DDM, aiming to offer readers a comprehensive and thorough understanding.
I. Definition and Classification of Epoxy Curing Agent Powder DDM
Epoxy curing agent powder DDM is a chemical additive used to promote the curing of epoxy resins. Typically existing in powder form, it exhibits high reactivity and easy dispersion, enabling rapid reaction with epoxy resins at room temperature to form hard, wear-resistant coatings or composite materials. Based on differences in composition, DDM can be classified into multiple types, such as aliphatic DDM and aromatic DDM, each with unique performance characteristics and application scopes.
II. Mechanism of Action of Epoxy Curing Agent Powder DDM
The mechanism of DDM involves chemical reactions between its functional groups and reactive groups in epoxy resin molecules, initiating the curing process. During the reaction, functional groups in DDM molecules undergo cross-linking reactions with reactive groups in epoxy resins, forming a stable three-dimensional network structure. This transforms the epoxy resin into a material with high strength, hardness, and wear resistance. Additionally, by adjusting curing time, temperature, and other factors, DDM allows for precise control of the epoxy resin curing process to meet diverse application requirements.
III. Application Range of Epoxy Curing Agent Powder DDM
Due to its excellent properties, DDM is widely used across multiple industries. In construction, it is commonly employed in concrete sealants, waterproof coatings, and tile adhesives to enhance water resistance, durability, and aesthetics of buildings. In the automotive industry, DDM is utilized in manufacturing high-performance automotive paints and interior parts to meet demands for wear resistance, corrosion resistance, and environmental friendliness. In electronics, DDM serves in circuit board protective layers and insulating materials to improve device stability and reliability. Furthermore, DDM plays vital roles in aerospace, medical devices, petrochemicals, and other fields.
IV. Preparation Process of Epoxy Curing Agent Powder DDM
The preparation of DDM involves key steps: raw material selection, mixing, grinding, and packaging. For raw materials, the type and ratio of DDM are chosen based on specific applications. During mixing, DDM is thoroughly blended with auxiliary agents to ensure uniform dispersion. In the grinding stage, high-speed mechanical pulverization further refines the powder to enhance reactivity with epoxy resins. Finally, moisture-proof and oxidation-resistant measures are applied during packaging to maintain stability and reliability during use.
V. Environmental and Safety Considerations for Epoxy Curing Agent Powder DDM
As a chemical product, DDM production may pose environmental risks. Thus, eco-friendly formulations should be prioritized to minimize pollution. During handling, safety precautions such as avoiding inhalation or skin contact are essential to prevent health hazards. Additionally, disposal of DDM waste must comply with regulations to prevent secondary environmental pollution.
Epoxy curing agent powder DDM, as a crucial chemical raw material, has seen expanding applications in modern industries and construction. By analyzing its definition, mechanisms, applications, preparation, and environmental/safety aspects, this article underscores DDM’s significance and value. In the future, advancing technology and heightened environmental awareness will drive research and application of DDM toward greater sustainability and eco-friendliness, aligning with humanity’s pursuit of a better life.
