1、Toughened and self

The epoxy resin with Carbon nanotubes (CNTs) and polycaprolactone (PCL) composite (EPCP) was successfully prepared for coatings, adhesives and FRP. Among them, CNTs were the mechanical enhancement phase and PCL fillers were the damage self-healing agent.

2、碳纳米管/环氧树脂复合材料的研究进展

The paper discusses various techniques used for preparing these composites and analyzes in detail how the addition of carbon nanotubes alters the performance of epoxy resins.

3、Preparation and application of carboxylated carbon nanotube

In this paper, carboxylated carbon nanotubes (C-CNTs) modified melamine resin MEPCMs with unique square structures were prepared by in situ polymerization of monomers through a simple process.

4、Dynamic Thermo

In this paper, we prepared carbon nanotube (CNT) epoxy composite films and conducted tensile experiments at various temperatures (−40 °C, −10 °C, 20 °C, and 50 °C) and frequencies (1 Hz, 10 Hz, and 20 Hz) using Dynamic Mechanical Analysis (DMA).

Preparation of Carbon Nanotube/Epoxy Composite Films with Superior

Herein, an effective strategy toward preparing CNT/epoxy (EP) composite films with excellent mechanical properties is reported.

Dynamic Thermo

These findings suggest that the presence of epoxy resin reduces the elastic deformation capacity of the CNT film while enhancing its damping properties.

Innovative synthesis and functionalization of carbon nanotube

Carbon nanotube (CNT)-reinforced polymer composites exhibit exceptional mechanical, electrical, and thermal properties, making them ideal for high-performance applications.

Research Advancements in the Mechanical Performance and

This review summarizes the recent advancements in the mechanical properties of nanocomposites reinforced with surface-modified carbon nanotubes (CNTs).

Surface modification methods and mechanisms in carbon nanotubes

Herein we summarize recent breakthroughs in the strategies of CNTs dispersion and highlight the key ongoing research challenges.

Enhanced Tensile and Flexural Properties in Carbon Nanotubes and

CNTs offer many potential benefits as a secondary reinforcing agent due to their advantages, including high electrical conductivity, the unique structure of 1D nanoscale and suitable surface chemical properties.

In the field of materials science, carbon nanotubes (CNTs) have garnered significant attention due to their unique physical and chemical properties. As nanomaterials with exceptional aspect ratios, excellent electrical conductivity, and superior mechanical performance, CNTs are widely regarded as promising candidates for composite materials. Particularly, modifying CNTs for application in resin powders can enhance mechanical strength, thermal resistance, electrical conductivity, and processing performance. This paper aims to explore the preparation methods, application effects, and future development trends of CNT-modified resin powders.

1. Preparation Methods of Carbon Nanotube-Modified Resin Powder

1.1 Surface Treatment

To improve compatibility between CNTs and the resin matrix, surface treatment is essential. Common methods include:

• Acid treatment: Soaking CNTs in strong acids (e.g., concentrated nitric acid or sulfuric acid) to remove organic impurities and non-polar functional groups, thereby increasing hydrophilicity and reactivity.
• Alkali treatment: Treating CNTs with alkaline solutions (e.g., sodium hydroxide, potassium hydroxide) to neutralize surface acidic groups and enhance polarity.
• Oxidation treatment: Introducing oxygen-containing functional groups (e.g., hydroxyl, carboxyl) via high-temperature oxidation to improve dispersion and reactivity in resins.

1.2 Mixing and Dispersion

Uniform dispersion of treated CNTs in resin powders can be achieved through:

• Ultrasonication: Leveraging cavitation effects to reduce agglomeration and improve homogeneity.
• High-speed stirring: Ensuring thorough contact between CNTs and resin powders.
• Dispersant addition: Incorporating polymers or inorganic salts to lower surface tension and facilitate dispersion.

1.3 Shaping Processes

Post-treatment and dispersion, shaping techniques include:

• Hot pressing: Forming desired shapes under heat and pressure.
• Injection molding: Injecting the mixture into molds for solidification.
• Extrusion molding: Continuous shaping via extruders for tubes, sheets, etc.

2. Application Effects of Carbon Nanotube-Modified Resin Powder

2.1 Enhanced Mechanical Performance

The incorporation of CNTs significantly improves:

• Tensile and flexural strength: Enhancing durability under external forces.
• Hardness and wear resistance: Prolonging material lifespan.
• Impact strength: Improving toughness against shocks.

2.2 Improved Thermal Resistance

CNTs elevate thermal properties, including:

• Higher melting points: Maintaining performance at elevated temperatures.
• Enhanced thermal stability: Reducing deformation or cracking due to temperature fluctuations.
• Lower thermal expansion coefficients: Minimizing dimensional changes during use.

2.3 Elevated Electrical Conductivity

CNTs boost electrical properties, such as:

• Reduced resistivity: Enabling better conductivity in electronic devices.
• Improved electromagnetic shielding: Providing enhanced protection for electronics.

3. Future Development Trends and Challenges

As technology advances and market demands evolve, research on CNT-modified resin powders is poised to progress in the following areas:

3.1 Process Optimization

Refining surface treatment and dispersion techniques to ensure consistency and stability.

3.2 Expansion of Applications

Exploring new fields, such as biomedical materials, high-performance fibers, and smart materials.

3.3 Eco-Friendly Material Development

Creating low-toxicity, recyclable CNT-modified resin powders to align with green manufacturing trends.

CNT-modified resin powders offer vast potential in materials science. With ongoing technological innovation, these materials are expected to play increasingly critical roles across diverse industries, contributing significantly to human advancement.