1、等离子体介质阻

Key words: plasma; fluorination modification; epoxy resin; timeliness; surface flashover; surface charge *收稿日期:2021-03-22; 修订日期:2021-05-01基金项目:国家自然科学基金项目(51777076 );中央高校基本科研业务费专项资金项目(2019MS083);新能源电力系统国家重点实验室自主研究课题

2、等离子体表面氟化处理环氧树脂及其沿面闪络特性研究

Changing the surface modification time, thesurface physical, chemical, and dielectric properties of epoxy resin sample with the same formula as insulator wastest before and after modification.

3、天津大学 冉昭玉，杜伯学，李进 等：输电管道中环氧树脂

★RANZhaoyu, DU Boxue, LI Jin,et al. Research Status of Fluorination Modification of Epoxy Resin Insulatorsin Transmission Pipelines [J]. GuangdongElectric Power，2018，31 (8)：18-26. 研 究 背 景 由于直流输电工程的快速发展，直流管道输电作为集成式、地下式的媒介，可以解决特殊场合的 ...

ZZZY334.docx

Therefore, the functional modification of cationic acrylic resin has always been the research focus in this field. At present, the research on the modification of cationic acrylic resin mainly focuses on two aspects: fluorination modification and core-shell structure modification.

Sulfonic

Moreover, Lang et al. have demonstrated that fluorination of polystyrene sulfonic acid resin enhances its acid strength and stability [28]. Improved properties of the halogenated resins have prompted us to prepare the sulfonated polystyrene-based catalysts with lateral fluorinated methyl groups in the polymer structure.

Modification of a fluorine–silicone acrylic resin with a free

Several kinds of free‐radical‐catching fluorine–silicone acrylic resins with different contents of 2,2,6,6‐tetramethyl‐4‐piperidyl methacrylate (TMPM) were synthesized by solution copolymerization. The chemical structures and properties of the resins were characterized and followed the performances of their respective ...

industrial additives: acrylic resin fluorination modification and

acrylic resin is copolymerized from (meth)acrylates and other vinyl monomers. acrylic resin has light color and good transparency; it has strong weather resistance, is resistant to ultraviolet light irradiation and is not easy to decompose or turn yellow, and has good gloss and color retention; it does not decompose or discolor at 170 ℃, and does not discolor at around 230 ℃ or higher ...

Acrylic resin fluorination modification and application

In addition, acrylic resin coatings are widely used in light industry, home appliances, metal furniture, aluminum products, coil industry, instrumentation, construction, textiles, plastic products, wood products, It is widely used in papermaking and other industries. Acrylic resin has become one of the backbone resins in my country’s coatings industry. Although acrylic resin has many of the ...

Fluorination Modification and Application of Acrylic Resin

Acrylic resin coating has good acid, alkali, salt, grease, detergent and other chemicals contamination and corrosion performance, and excellent construction performance. Acrylic resin coatings are the mainstream products in industrial coatings, and the largest market is car coatings.

Selective fluorination of the surface of polymeric materials after

With the microfluidics community embracing 3D resin printing as a rapid fabrication method, controlling surface chemistry has emerged as a new challenge. Fluorination of 3D printed surfaces is highly desirable in many applications due to chemical ...

In modern materials science, acrylic resins are widely used in various fields due to their excellent properties. their non-polar structure often results in poor chemical stability and weather resistance in many applications. To overcome these limitations, scientists have proposed an innovative approach: fluorination modification. This method introduces fluorine atoms into the molecular chain of acrylic resins, altering their chemical properties to enhance heat resistance, weatherability, and electrical insulation. This article explores the principles, methods, and applications of fluorination modification in acrylic resins.

I. Principles of Fluorination Modification

Fluorination modification is achieved by incorporating fluorine atoms into the molecular chain of acrylic resins. Fluorine, with its high electronegativity, forms strong covalent bonds with carbon atoms, significantly altering the chemical structure and physical properties of the resin. Specifically, fluorination leads to the following improvements:

1. Enhanced Heat Resistance: The presence of fluorine atoms increases the glass transition temperature (Tg) of the resin, allowing it to maintain lower viscosity in a glassy state at higher temperatures. This makes fluorinated acrylic resins suitable for high-temperature applications.

2. Improved Weatherability: Fluorinated acrylic resins exhibit lower surface energy, reducing surface tension and minimizing penetration by moisture and oxygen. Additionally, fluorine atoms provide chemical inertness, preventing reactions with atmospheric oxygen and water, thereby improving weatherability.

3. Better Electrical Insulation: Fluorinated acrylic resins possess higher dielectric constants and lower dissipation factors, enabling superior electrical insulation. This is critical for electronic devices and electrical equipment requiring high isolation performance.

II. Methods of Fluorination Modification

Several techniques can be used to fluorinate acrylic resins, with the most common being:

1. Free Radical Polymerization: This involves adding fluorine-containing monomers or initiators to achieve fluorination via free radical reactions. While simple and cost-effective, this method may compromise mechanical properties.

2. Ionic Liquid Intercalation: Fluorine atoms are inserted into the resin’s molecular chain using ionic liquids as reaction media. This approach allows precise control but is costly and operationally complex.

3. Plasma Treatment: High-energy particles in plasma etch and dope the resin to introduce fluorine. This yields high-quality products, but requires expensive equipment and specialized operation.

III. Applications of Fluorination-Modified Acrylic Resins

Fluorination modification expands the utility of acrylic resins across diverse fields:

1. Coatings: Fluorinated acrylic resins excel in outdoor coatings and high-temperature environments. For example, fluorinated polyimide-modified acrylic resins are used in aerospace coatings.

2. Adhesives: These resins offer higher bonding strength and weather resistance, making them ideal for automotive manufacturing and construction. Fluorinated polyurethane-modified acrylic resins, for instance, produce high-strength, weather-resistant adhesives.

3. Electronic Packaging Materials: Their优异的 electrical insulation and low dielectric loss suit them for high-frequency, high-speed electronic packaging. Fluorinated polyimide-modified acrylic resins are used in advanced electronic substrates.

4. Solar Cells: Fluorinated acrylic resins improve carrier mobility and reduce series resistance, enhancing solar cell efficiency. Fluorinated polyimide-modified resins, for example, contribute to stable, high-performance solar cells.

Fluorination modification of acrylic resins is a powerful tool for enhancing performance and broadening applications. By selecting appropriate fluorination methods, researchers can precisely tailor resin properties to meet specific demands. With ongoing advancements in materials science, fluorinated acrylic resins are poised to play an increasingly vital role in future technologies.