Performance Advantages of Nylon LFT Materials

Nylon LFT (Long Fiber Reinforced Thermoplastics) is a composite material that uses nylon (such as PA6, PA66) as the matrix and incorporates long fibers (like glass fiber, carbon fiber). Its core advantages include:

High Strength and High Stiffness
Long fibers (5-20mm) form a three-dimensional network structure in the matrix, significantly improving the material's tensile strength, flexural modulus, and impact resistance, outperforming short fiber-reinforced materials (such as SFT).

Heat Resistance and Creep Resistance
The nylon matrix has good heat resistance (long-term use temperature 120-150℃), and when combined with fiber reinforcement, it exhibits excellent creep resistance at high temperatures, making it suitable for high-temperature environments such as around engines.

Fatigue Resistance and Dimensional Stability
Long fibers distribute stress more evenly, reducing fatigue cracks, and have a low shrinkage rate, making them suitable for precision structural components.

Lightweight and Recyclability
With a density lower than that of metals (1.3-1.5g/cm³), it can replace aluminum alloys; its thermoplastic properties support melting and recycling, offering significant environmental benefits.

Chemical Resistance and Wear Resistance
The nylon matrix is resistant to oils and solvents, making it suitable for applications in contact with chemical media (such as automotive oil pans).

Major Application Fields

Automotive Industry (core market, accounting for about 60%)

Structural components: front-end module brackets, battery trays, door anti-collision beams.

Powertrain systems: engine covers, oil pans, transmission components.

Chassis systems: suspension brackets, pedal structures.
Case: NIO ES8 front-end bracket uses nylon LFT to replace metal, reducing weight by 30%.

Electronics and Electrical Appliances

High-load connectors, 5G base station antenna covers, drone body structural components (requiring lightweight and impact resistance).

Industrial Equipment

Pump and valve housings, hydraulic system components (chemical resistant), logistics pallets (high load-bearing requirements).

Consumer Goods and Sports Equipment

Electric tool casings, bicycle frames, ski binding fixtures.

Review of Leading Domestic Enterprises

Kinfa Technology (600143.SH)

Advantages: A leading domestic modified plastics company, with nylon LFT products covering PA6/PA66 base materials, fiber content 30-50%, focusing on new energy vehicles (such as battery boxes).

Customers: BYD, CATL, Tesla supply chain.

Polyplastics (002324.SZ)

Specialty: Focused on automotive materials, LFT products used in engine peripheral components for BMW and Mercedes-Benz, with a heat resistance up to 160℃.

Technology: Independently developed fiber impregnation technology to enhance interfacial bonding strength.

CNNC Juner (under CNNC Group)

Positioning: High-end engineering plastics, nylon LFT applied to aerospace-grade connectors and high-speed train interior parts.

Innovation: Developed carbon fiber reinforced nylon LFT for drone structural components.

Nanjing Julong (300644.SZ)

Fields: Automotive + Rail Transit, nylon LFT used in high-speed train seat frames, flame-retardant versions passed UL certification.

Capacity: Annual production capacity of 50,000 tons of modified plastics, with LFT accounting for about 20%.

Shanghai Jushi New Materials Group

Technical Highlights: Integrated molding technology for the production of large thin-walled parts (such as underbody protection plates for new energy vehicles).

Collaboration: Jointly developing lightweight solutions with Chery and Geely.

Industry Trends and Challenges

Trend: The demand for lightweight new energy vehicles is surging, and the penetration rate of nylon LFT in 800V high-voltage system insulation components and integrated die-casting parts is increasing.

Challenge: The cost of carbon fiber LFT is high (about five times that of glass fiber), and it is currently mainly used in aerospace; the recycling system is not yet well-established.