Characteristics of nanographene and its application in the textile field

Characteristics of nanographene and its application in the textile field

Basic characteristics of nanographene
Nanographene is a two-dimensional material composed of carbon atoms in sp² hybrid orbitals, with the following characteristics:
Excellent electrical conductivity: The resistivity of graphene is only 10^-6 Ω·cm, which is the material with the lowest resistivity known so far.
Excellent thermal conductivity: The thermal conductivity of graphene is as high as 5300 W/(m·K), which makes it important for thermal management.
High strength and light weight: The thickness of graphene is only 0.335 nm, but its tensile strength can reach 130 GPa, far exceeding that of steel.
Good chemical stability: Graphene has excellent antioxidant and corrosion resistance.

Application of nanographene in the textile field
The main applications of nanographene in the textile field include:
Functional fibers: By combining graphene with fibers, the fibers can be given antistatic, UV protection, antibacterial, far-infrared emission and other functions.
Smart textiles: Graphene’s conductivity makes it an ideal material for smart textiles, which can be used in wearable devices and sensors.
Composite materials: Graphene can be used as a reinforcement to significantly improve the mechanical properties and thermal stability of composite materials.

Production process and limitations of polyester hot melt yarn
Production process of polyester hot melt yarn
Polyester hot melt yarn is a chemical fiber produced by melt spinning technology. Its main production process includes:
Raw material preparation: Polyester chips (PET) are mixed with additives to form spinning raw materials.
Melt spinning: The raw materials are heated to a molten state and extruded through a spinneret to form fibers.
Cooling and stretching: The fibers are shaped during the cooling process and the strength is increased by stretching.
Post-processing: It includes steps such as heat setting, winding and packaging.

Limitations of polyester hot melt yarn
Although polyester hot melt yarn has the advantages of low cost, high strength and chemical corrosion resistance, its functional limitations limit its application range:
Insufficient functionality: Traditional polyester fibers lack antistatic, antibacterial and UV protection functions.
Poor comfort: The hygroscopicity of polyester fiber is poor, resulting in low wearing comfort.
Limited heat resistance: The heat resistance of polyester fiber is poor, which limits its application in high temperature environment.
Application of nanographene in polyester hot melt

Methods for introducing nanographene
The methods for introducing nanographene into polyester hot melt mainly include the following:
Melt blending method: Graphene is mixed with polyester chips and composite fibers are obtained by melt spinning.
Coating method: Graphene dispersion is coated on the surface of polyester fiber to form a functional coating.
In-situ polymerization: During the fiber forming process, graphene is fixed on the fiber surface by chemical methods.

Improvement of the performance of polyester hot melt by nanographene
Mechanical properties: The addition of graphene significantly improves the breaking strength and elastic modulus of polyester fiber.
Thermal stability: The high thermal conductivity and chemical stability of graphene significantly improve the heat resistance of polyester fiber.
Functionality: Graphene gives polyester fibers antistatic, antibacterial, UV protection and far-infrared emission functions.

Cost-benefit analysis of nanographene in polyester hot melt yarn

Initial cost

Graphene production cost: The preparation cost of graphene is high, but with the advancement of technology, its price is gradually decreasing.

Cost of transformation of production process: The introduction of graphene into polyester hot melt yarn requires the transformation of existing production lines, and the initial investment is large.

Long-term benefits

Added value brought by performance improvement: The market value of functional polyester fiber is significantly higher than that of traditional products, which can increase corporate profits.

Improved production efficiency: The addition of graphene can simplify the production process and improve production efficiency.

Enhanced market competitiveness: Functional polyester fiber has strong competitiveness in the high-end market and can help companies open up new markets.

Market prospects and application potential

Market demand

As consumers’ demand for functional textiles increases, the market demand for nanographene-modified polyester hot melt yarn will continue to grow. Especially in the fields of sportswear, smart home and industrial fabrics, its application prospects are broad.

Application Cases
Sportswear: Functional polyester fibers are widely used in sportswear, providing functions such as antibacterial, UV protection and far-infrared emission.
Smart Home: The application of smart textiles in the field of smart home is increasing, and graphene-modified polyester fibers can be used in sensors and wearable devices.
Industrial Fabrics: Functional polyester fibers show excellent performance under high temperature and high humidity environments.

Conclusion
The application of nanographene in polyester hot melt yarn not only improves the functionality of the product, but also significantly improves its market competitiveness. Although the initial cost is high, in the long run, the added value and improved production efficiency it brings can effectively reduce costs. With the advancement of technology and the growth of market demand, nanographene-modified polyester hot melt yarn is expected to occupy an important position in the textile industry.