N,N'-m-phenylene dimaleimide, (HA-8/HVA-2/PDM), is a compound with a special chemical structure. In the field of fine chemicals, it is widely used as a cross-linking agent due to its unique properties. N,N'-m-phenylene dimaleimide (isophthalimide) is irreplaceable as a cross-linking agent, mainly due to its unique chemical structure and properties, as well as its excellent performance in specific applications.
Technical indicators:
Appearance
Yellow powder
Melting point
≥196℃
Moisture content
≤0.5%
Ash content
≤0.5%
1. Structural characteristics:
N,N'-m-phenylene dimaleimide molecule contains two maleimide groups, both of which are highly reactive double bonds. This allows it to undergo addition reactions with compounds containing active hydrogen atoms such as amines, alcohols or carboxylic acids. The benzene ring in the isophthalimide structure gives the molecule good stability and rigidity, making it less likely to deform during the cross-linking process, thus ensuring the stability of the cross-linked structure.
2. Cross-linking mechanism:
When N,N'-m-phenylene dimaleimide is used as a cross-linker, its maleimide groups react with active sites on the polymer chain to form covalent bonds. These covalent bonds link different polymer chains together, forming a three-dimensional cross-linked network.
This cross-linked structure can significantly improve the mechanical properties of the polymer, such as tensile strength, impact strength and heat resistance. It also improves the chemical and solvent resistance of the polymer.
3. Excellent thermal stability and chemical stability:
The benzene ring in the isophthalimide structure enhances its thermal and chemical stability, allowing it to maintain a stable cross-linking effect under high temperatures and harsh environments. This stability makes N,N'-m-phenylene dimaleimide an ideal cross-linker in aerospace, automotive manufacturing and other fields that need to withstand high temperatures and mechanical stress.
4. Good processing performance:
N,N'-m-phenylene dimaleimide has good fluidity and permeability during the cross-linking process, and can be evenly dispersed in the polymer matrix to form a uniform cross-linked network.
This processing performance makes it advantageous in manufacturing parts with complex shapes and structures, and can meet the needs of various fine chemical products.
5. Unique cross-linking mechanism:
The cross-linking mechanism of N,N'-m-phenylene dimaleimide is different from other cross-linking agents in that it achieves cross-linking by forming covalent bonds with active sites on the polymer chain, rather than relying solely on physical entanglement or Weak van der Waals forces.
The formation of this strong covalent bond makes the cross-linked structure more stable and less susceptible to the influence of the external environment, thereby improving the durability and service life of the polymer.
As a cross-linking agent, N,N'-m-phenylene dimaleimide has a unique chemical structure, excellent performance, and excellent performance in specific applications, making it irreplaceable among other cross-linking agents. It is widely used and important in the field of fine chemicals, providing strong support for the preparation of high-performance composite materials.
6.Application :
Due to its excellent cross-linking properties, N,N'-m-phenylene dimaleimide has wide applications in many fields. For example, in the aerospace field, it is used to prepare high-performance composite materials to improve the structural strength of aircraft and spacecraft.In the automotive industry, this cross-linking agent-N,N'-m-phenylene dimaleimide is used to make lighter and stronger car parts to improve vehicle safety and fuel efficiency.
In addition, N,N'-m-phenylene dimaleimide also plays an important role in the fields of electronic and electrical, construction and sporting goods.
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