Door and Front-end Module for CF40 PA66 Composite
The application of CF40 PA66 (40% carbon fiber reinforced nylon 66) material in automotive door modules and front modules mainly utilizes its high rigidity, low weight, excellent dimensional stability, and weather resistance to replace traditional metals or ordinary engineering plastics. This not only enables light weighting, high rigidity, and heat resistance, but also takes into account structural strength and dimensional stability, thereby enhancing the overall structural performance.
What is CF40 Nylon 66 Material?
40% Long Carbon Fiber reinforced Nylon 66 (LCF40 PA66) compound resin is a high-performance engineering plastic that uses nylon 66 (PA66) as the matrix and adds 40% of long segmented carbon fibers as the reinforcing phase. Compared to ordinary short-cut carbon fiber reinforced nylon (SCF PA66) material, its carbon fiber length is longer (typically 6mm to 25mm), and it retains more fiber length during processing and molding. As a result, its mechanical properties, fatigue resistance, and dimensional stability have significantly improved.
What is Good Performance of CF40 PA66 Plastic pellet?
Ultra-high rigidity and strength: High tensile modulus, enhanced strength.
Excellent creep resistance and fatigue resistance: The long fiber network can withstand long-term dynamic loads.
Good dimensional stability: Low water absorption rate, small thermal expansion coefficient, suitable for precision components.
Lightweight: Density is approximately 1.3–1.5 g/cm³, replacing some components can significantly reduce weight.
High heat resistance: Heat distortion temperature (HDT) can reach a high temperature.
Impact resistance: More balanced rigidity and toughness compared to short fiber reinforcement, better impact performance.
In the Application of the Front-End Module (FEM)
The front module is a comprehensive structural component located at the front of the car engine compartment. It usually integrates components such as the radiator, condenser, fan, and bumper bracket.
Functions of CF40 PA66 Polymer:
High modulus and strength: It can replace stamped steel parts and withstand the collision loads transferred by the bumper.
Heat resistance and chemical resistance: The front end is exposed to high temperature and high humidity and may come into contact with coolant, salt spray, etc. CF PA66 has excellent corrosion resistance.
Structural integration: It can form multiple functional points (such as the installation position of the cooler, the lamp bracket) in one process, reducing assembly costs.
Size stability: It ensures the installation accuracy of parts such as lamps and radiators, reducing the impact of thermal expansion and contraction.
Lightweight and cost advantage: Compared with metal solutions, it can achieve weight reduction and lower the cost of subsequent anti-corrosion treatment.
Typical components:
Integrated front-end frame (Front-End Carrier), headlight mounting frame, radiator and condenser bracket, bumper crossbar auxiliary bracket.
In the Application of the Car Door Module
The door module is a structural component that houses the locking mechanism, lifting device, motor, speakers, and other components inside the car door.
Functions of CF PA66 Polyester:
High stiffness and strength: The addition of carbon fibers significantly increases the modulus of PA66, enabling it to withstand dynamic loads and long-term vibrations of the door body.
Dimensional stability: The water absorption rate is lower than that of ordinary PA66, preventing deformation due to changes in humidity and ensuring the accuracy of the lifting device track.
Lightweight: Compared to steel plates or aluminum plates, it can reduce weight by approximately 20% or more, contributing to energy conservation and cost reduction of the entire vehicle.
Fatigue resistance: Meeting the requirements of frequent opening and closing of the door body, road impacts, and long-term use.
Heat resistance: Capable of withstanding the heat generated by the motor inside the door and the high temperatures in summer.
Typical components
Internal door frame (Door Carrier / Door Module Carrier), window lift track bracket, door lock mounting bracket, speaker bracket.
Technical Data of Carbon Fiber PA66 Composite
LFT-G® PA66 LCF40 BC04B material is a 40% long Carbon fiber reinforced Polyamide6 (Nylon6) Compounds polymer natural grade, developed for Injection molded applications.
Mechanical PropertiesProperty |
Value |
Unit |
Test Standard |
|---|---|---|---|
| Tensile Strength | 260-280 | MPA | ISO 527 |
| Tensile Modulus | 30000-31000 | MPA | ISO 527 |
| Flexural Strength | 370-390 | MPA | ASTM D-790 |
| Flexural Modulus | 20000-21000 | MPA | ASTM D-790 |
| Deflection Temperature (1.8MPa) | 245-265 | °C | ISO 75-2 |
40% long carbon fiber nylon 66, as a high-performance engineering plastic that combines lightweight, ultra-high stiffness, high strength, heat resistance and dimensional stability, can provide anti-fatigue and high-precision structural support for door modules in the automotive field, and bear collision loads and high-temperature conditions for front modules, replacing metals to achieve weight reduction. At the same time, its other excellent properties also make it possible for the long-term use of components, and it has extremely high application value and market prospects.
