1、高性能氰酸酯树脂改性研究进展与应用展望

Abstract: Cyanate Ester (CE) has excellent dielectric stability, low hygroscopicity, and high temperature tolerance, making them the primary matrix materials for high-reliability aerospace transparent components (such as satellite antenna domes and radar fairings), primary load-bearing structures, and high-frequency printed circuit boards. However, their intrinsic brittleness, thermal ...

2、Cyanate ester resin based composites with high toughness and low

By means of the copolymerization of PAI and CE, the fracture toughness and tensile strength of cyanate are significantly improved. The PAI modified cyanate ester has the lowest water absorption rate and the lowest total mass loss rate.

3、Toughness and Low Dielectric Cyanate Ester Resin Modified with

Cyanate resin is widely used in electronic packaging, printed circuit boards, radomes, and communication satellites for its excellent dielectric performance, heat resistance, and good flame retardancy, but its high brittleness is still a real challenge to be solved.

4、Thioetherimide

Therefore, in this work, a new type of long-chain thioether BMI (SBMI) resin was synthesized. By controlling its molecular weight and copolymerizing it with a CE, a novel modified cyanate resin with good molding performance and its glass fiber reinforced composites were fabricated.

5、Liquid crystal mesogenic epoxy modified cyanate ester resin

This study discussed glass transition temperature (Tg) and toughness of the cyanate ester modified with a terphenyl type mesogenic epoxy. The rigid structure of terphenyl epoxy with a methyl branch (DGETP-Me) minimized the decrease of Tg due to the epoxy modification.

Polymers for Advanced Technologies

In this paper, the mechanical properties and thermal expansibility of cyanate resin (CE) copolymerization modified by epoxy resin (EP) under medium-low temperature curing process were studied.

5 Additives and modifiers for cyanate ester resins

Cyanates can be modified with a wide variety of reactive compounds and our objective is not to give an exhaustive list of these compounds but rather to report data on simplified systems that can be considered as models of commercially available formulations.

Preparation, Cure, Characterization, and Mechanical Properties of

Several researchers have extensively examined the integration of different flame retardants to enhance the thermal and mechanical properties of cyanate ester-epoxy resin combinations, which will be further discussed in the following sections.

Thioetherimide

In this work, a CE was modified by copolymerization with a long-chain thioether bismaleimide (SBMI) to form a thioetherimide-modified CE (SBT). The results indicated that SBT had a wider processing window and better processing properties than a common bismaleimide-modified CE resin (MBMI).

Cyanate ester resin modified by phenolic resin containing

To obtain modified cyanate ester (CE) with good comprehensive properties and low cost, a novel phenolic resin containing diphenyl oxide (MPF) with high molecular weight was synthesized from diphenyl ether, formaldehyde, methanol and phenol by a two-step process which differed from polyphenylene oxide (PPO) in structure.

Modified cyanate ester resin is a high-performance thermosetting resin that alters its chemical structure through reactions with specific chemicals, thereby endowing it with new properties. This material is widely used in various fields, including aerospace, automotive manufacturing, electronics, and construction, due to its excellent mechanical properties, heat resistance, and chemical resistance.

Basic Properties of Modified Cyanate Ester Resin

1. Chemical Composition: Modified cyanate ester resin typically consists of cyanate ester monomers (such as phenolic resin or epoxy resin) and other additives (e.g., curing agents, catalysts). These monomers undergo chemical reactions at high temperatures to form a three-dimensional network structure.

2. Heat Resistance: Due to the presence of cyanate ester groups, modified cyanate ester resin exhibits excellent heat resistance, maintaining stable performance at elevated temperatures. This makes it highly suitable for applications in high-temperature environments.

3. Mechanical Properties: The resin also possesses good mechanical properties, including hardness, strength, and toughness, enabling it to meet the demands of various mechanical applications.

4. Chemical Resistance: Modified cyanate ester resin demonstrates strong corrosion resistance to most chemicals, leading to its widespread use in industries such as chemical engineering, petroleum, and natural gas.

5. Processability: Although the resin itself has a certain viscosity, its processability can be adjusted by adding appropriate diluents or auxiliary agents to meet different molding requirements.

Applications of Modified Cyanate Ester Resin

1. Aerospace: In aerospace, modified cyanate ester resin is widely used due to its outstanding high-temperature resistance and mechanical properties. Examples include structural components of aircraft and satellites, as well as composite material shells.

2. Automotive Manufacturing: The resin plays a critical role in automotive manufacturing, being used for parts such as automotive components, engine parts, and high-strength body structures.

3. Electronics and Electrical Engineering: In this field, modified cyanate ester resin is employed for its优异的 electrical properties and thermal stability, commonly found in circuit boards, electronic packaging materials, and insulators.

4. Construction: The resin is also utilized in construction for applications such as concrete reinforcement materials, waterproof coatings, and various architectural components.

Preparation Methods for Modified Cyanate Ester Resin

1. Prepolymerization Method: A common approach involves mixing cyanate ester monomers with other monomers, followed by high-temperature polymerization to obtain prepolymers. Crosslinking reactions are then initiated by adding curing agents and catalysts to produce the final resin.

2. Melting Method: This method heats cyanate ester monomers to a molten state, mixes them with curing agents and catalysts, and initiates chemical reactions to form the modified resin.

3. Solution Method: Here, cyanate ester monomers are dissolved in solvents, mixed with curing agents and catalysts, and reacted to yield the modified resin.

Modified cyanate ester resin has garnered significant attention due to its unique properties and broad application prospects. By selecting appropriate preparation methods and additives, its performance can be further optimized to meet specific needs in diverse fields. With advancements in technology and the development of new materials, it is believed that modified cyanate ester resin will play an increasingly important role in future innovations.