1、Research progress on modification of phenolic resin

In recent years, more and more researchers have focused on the discussion of the properties of modified phenolic resins and gradually ignored the research on the synthesis processes that can affect the molecular structure and properties of phenolic resins.

2、Preparation and properties of epoxy

Preparation and properties of epoxy-modified thermosettin... This article proposes the preparation and microwave thermal cured (MTC) epoxy-modified phenolic fibers for the first time.

3、有机硅改性热固性酚醛树脂的合成及应用研究

Abstract: In this paper, 3-isocyanatopropyl triethoxysilane (KH-907) was employed as a modifier, while phenol and formaldehyde served as monomer raw materials. The intermediate of N- (3-triethoxysilylpropyl) phenyl carbamate was synthesized by controlling the conditions of the addition reaction.

4、Novel sustainable synthesis of a formaldehyde

The resins were synthesized at different TPA-to-resorcinol molar ratios (0.6 and 1.6). This study investigates the mechanism and chemical reactions occurring during the reactive extrusion by characterizing the resin composition through NMR and mass spectrometry (<1500 g mol −1).

5、Preparation and Properties of Epoxy

This study focused on thermosetting high-ortho phenolic epoxy fibers prepared by blending thermosetting high-ortho phenolic resins (HOT-PRs) with F-704 epoxy resins and using dry spinning, thermal curing, and microwave curing methods.

Preparation and Properties of Molybdenum‐modified High‐ortho

The study of high-ortho phenolic fibers aims to improve their properties and expand their applications through resin modifications. It provides a possible fiber preparation strategy for improving heat-resistant phenolic fibers, thereby guiding the research of modified high-ortho phenolic fibers.

Synthesis of thermosetting phenolic resin and its

Herein, we described a strategy for the synthesis of boron-modified thermosetting phenolic resin under alkali-free conditions. The key to the success of this process lies in Lewis acidity of borate ester which can promote the condensation of phenol and aldehyde.

Preparation and properties of epoxy

PDF | This article proposes the preparation and microwave thermal cured (MTC) epoxy-modified phenolic fibers for the first time.

Enabling phenolic resin toughening and heat resistant: Tactics and

As one of the most important synthetic resins, phenolic resins are widely used in various scenarios of modern industry and contribute a huge economic value. To satisfy high-end and demanding application requirements, phenolic resin modification always stays the research focus in this field.

Synthesis of thermosetting phenolic resin and its montmorillonite

Herein, we described a strategy for the synthesis of boron-modified thermosetting phenolic resin under alkali-free conditions. The key to the success of this process lies in Lewis acidity of borate ester which can promote the condensation of phenol and aldehyde.

Modified thermosetting phenolic resins, as a traditional thermoset polymer matrix material, play an irreplaceable role in numerous fields. With the advancement of science and technology and the ever-changing market demands, higher performance requirements have been imposed on modified thermosetting phenolic resins to achieve broader applications. This article explores the fundamental properties, application areas, modification methods, and development trends of modified thermosetting phenolic resins.

1. Fundamental Properties

Modified thermosetting phenolic resins are thermoset plastics composed primarily of phenolic resin combined with various additives such as curing agents, fillers, and plasticizers. Their molecular structures contain abundant aromatic rings and ether bonds, endowing them with excellent heat resistance, electrical insulation, mechanical strength, low water absorption, and dimensional stability.

2. Application Areas

1. Electronics and Electricals: Due to their superior electrical insulation properties, modified thermosetting phenolic resins are widely used in protective coatings for electronic components, encapsulation materials, and adhesives for circuit boards.
2. Construction Industry: As a novel building material, they are employed to manufacture fireproof panels, soundproof boards, and other components to enhance building safety.
3. Automotive Industry: In automobile manufacturing, these resins are utilized for engine parts and structural components due to their exceptional mechanical properties and temperature resistance.
4. Aerospace: In aerospace applications, they are used for aircraft exteriors, satellite antenna covers, and other components requiring extreme heat resistance and impact resistance.
5. Other Fields: Modified thermosetting phenolic resins also find applications in sports equipment, medical devices, toy manufacturing, and more.

3. Modification Methods

To meet diverse application requirements, modified thermosetting phenolic resins undergo various modification processes, including:

1. Chemical Modification: Introducing functional groups or chemical reactions to alter the resin’s structure and properties, such as cross-linking to improve mechanical strength and heat resistance.
2. Physical Modification: Altering the microstructure via physical means, e.g., adding nanofillers to enhance mechanical strength and thermal conductivity.
3. Bio-Based Modification: Utilizing biomass materials (e.g., bio-oil, starch) as raw materials to develop eco-friendly bio-based modified phenolic resins with potential cost advantages.
4. Surface Treatment: Applying coatings or plating to improve wear resistance, corrosion resistance, and aesthetics.

4. Development Trends

Driven by advancements in materials science, the future of modified thermosetting phenolic resins focuses on:

1. High Performance: Enhancing mechanical properties, heat resistance, chemical resistance, and flame retardancy through chemical and physical modifications.
2. Eco-Friendly Solutions: Developing bio-based modifications to reduce reliance on fossil resources and minimize environmental impact.
3. Multifunctionality: Combining multiple functional materials to enable versatile uses, such as integrating insulation and thermal barrier properties.
4. Smart Materials: Leveraging smart material technologies to create self-healing, shape-memory, and other advanced functionalities.

modified thermosetting phenolic resins remain a cornerstone of modern industrial development despite being a traditional thermoset polymer. Through continuous technological innovation, their application scope is expected to expand significantly, addressing increasingly complex and demanding operational conditions.