1、Research progress on modification of phenolic resin
With the widening of the application fields of phenolic resins, many types of modifiers have been used to modify the molecular structure of phenolic resins.
2、改性酚醛树脂复合材料的研究及应用
Therefore, it is an inevi-table trend to composite modify phenolic resin to prepare composite materials in various forms. In this paper, the research status and application of phenolic resin matrix composites are systemati-cally described.
3、Design and synthesis of fluorine/benzoxazole ring
In this work, we creatively introduced the fluorine and benzoxazole ring into the bismaleimide (BMI) resin, based on the idea of homogenous reinforcement, to enhance the interaction between the PBO fiber and the resin.
4、Study and Application of Modified Phenolic Resin Composites
The overall performance of montmorillonite modified phenolic resin is improved remarkably, such as flow ability, tensile strength and toughness property of resin coated sand.
Synthesis and Characterization of a Fluorinated Phenolic
The successful synthesis of a fluorinated phenolic resin/phenolic resin blend (F-PR/PR) was proven by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance 19F (19F-NMR).
Fluorene containing resole
In this study, a high-carbon-content resole-type PR (H-BPF) was synthesized with 9,9-bis (4-hydroxyphenyl)fluorine and formaldehyde. After curing, a fluorene-based crosslinked structure was formed through the reaction of hydroxymethyl groups in H-BPF.
Superior wear resistance of boron phenolic resin
Superior wear resistance of boron phenolic resin-based composites using fluorine rubber micro powder as high-performance additive - 西北工业大学
A comprehensive review on modified phenolic resin
Current research on PR modification emphasizes both physical methods, including filler enhancement and fiber reinforcement, and chemical methods, such as copolymerization, grafting, and cross‐linking.
Research progress on modification of phenolic resin
This review covers the synthesis processes used to prepare chemically modified phenolic resins and classifies and summarizes them. The types of modifiers, the timing in adding modifiers, and the advantages and disadvantages of different synthesis processes are considered.
改性酚醛树脂复合材料的研究及应用
Therefore, it is an inevitable trend to composite modify phenolic resin to prepare com-posite materials in various forms. In this paper, the research status and application of phenolic...
In modern materials science, phenolic resins, as a traditional thermosetting resin matrix, are widely favored for their excellent heat resistance and mechanical strength. their limited chemical stability and poor chemical resistance restrict their application in more demanding environments. To overcome these shortcomings, scientists have developed various modification strategies, including the introduction of fluorine elements. This modification method not only improves the chemical stability of phenolic resins but also significantly enhances their high-temperature resistance and chemical corrosion performance.
The incorporation of fluorine elements can substantially improve the thermal stability of phenolic resins. Fluorine atoms, with their high electronegativity, form strong chemical bonds with oxygen atoms in phenolic molecules, thereby enhancing intermolecular forces. Additionally, the presence of fluorine atoms promotes crosslinking density within the resin molecular chains, preventing degradation at elevated temperatures and maintaining robust thermal stability.
Another key advantage of fluorine-modified phenolic resins is their superior chemical resistance. Fluorine elements react with various chemicals to form stable fluoride bonds, enabling the modified resin to resist most organic solvents, acids, and bases. This property expands their potential applications in fields such as petroleum processing and chemical equipment.
Beyond these benefits, fluorine-modified phenolic resins exhibit other unique properties. For instance, their low friction coefficient improves the wear resistance of composite materials. Additionally, their hardness and rigidity are significantly enhanced, making them suitable for manufacturing high-performance wear-resistant coatings and structural components.
The preparation process for fluorine-modified phenolic resins is relatively simple and cost-effective. By mixing fluorine compounds with phenolic resins and initiating a reaction, fluorine elements can be efficiently incorporated. This method is environmentally friendly and scalable, providing strong support for widespread adoption.
Despite these advantages, fluorine-modified phenolic resins have limitations. For example, their higher cost and inability to fully replace traditional phenolic resins in certain applications remain challenges. their mechanical properties, such as hardness and toughness, may be compromised.
To address these limitations, researchers are exploring new modification methods and processes. For example, adjusting the type and ratio of fluorine compounds allows for precise tuning of the resin’s properties. Composite modifications with other resin types can also yield superior comprehensive performance.
fluorine-modified phenolic resins, as an emerging material, demonstrate immense potential across multiple fields due to their excellent thermal stability, chemical resistance, and low friction coefficient. While current limitations persist, advancements in technology and research will likely expand their applications, contributing further to human development.
