Introduction

Fiber reinforcement ratios play a crucial role in enhancing the performance and properties of PA66, a widely-used engineering thermoplastic in various industries. In this case study analysis, we delve into the impact of different fiber reinforcement ratios on the properties of PA66 particles. As a leading PA66 particles manufacturer, PA66 particles maker, and PA66 particles vendor, understanding the optimal fiber reinforcement ratios is essential for achieving the desired material characteristics and mechanical properties. Through this article, we aim to explore the significance of fiber reinforcement ratios in PA66 manufacturing and provide insights into the implications for potential applications in the industry. 

Nylon (PA) has a series of excellent properties such as high mechanical strength, chemical resistance, oil resistance, wear resistance, self-lubrication, and easy processing and molding. It has become a thermoplastic widely used at home and abroad. One of the engineering plastics. But in actual applications, the performance requirements for nylon vary under different usage conditions or environments. For example, parts such as electric drills and motor casings, pump impellers, bearings, diesel engines and air-conditioning all-plastic fans require nylon materials to have high strength, high rigidity and high dimensional stability; due to the poor low-temperature toughness of nylon, it needs to be processed at this time Toughening modification; in some outdoor applications, nylon materials must undergo weathering modification and so on in long-term outdoor environments.

The reinforcing materials used in reinforced nylon are mainly fibrous substances such as glass fiber, carbon fiber, and whiskers, among which glass fiber reinforcement is the most widely used. The rigid strength and hardness of the material can be significantly improved through glass fiber reinforcement, and the dimensional stability and heat resistance of the material can be significantly improved. Since nylon itself is not strong enough, its strength can be improved by adding 10-30% fiber. In particular, 30% intensity is recognized as the most appropriate ratio. It is also added to 40-50%. According to the specific requirements of different products and with appropriate formulas, it can be successful. The following takes PA66 material as an example.

High-strength glass fiber reinforced products

Reinforced nylon materials with a glass fiber addition ratio of 40-50% are mainly suitable for manufacturing high-strength gears and high-strength parts of professional equipment.

Application: Various precision gears PA66+GF has high rigidity, dimensional stability, noise reduction, wear resistance, silence, lubrication, antistatic and other properties.

Medium-strength glass fiber reinforced products

Application 1: Auto parts Automobile PA66+GF materials can be used in engine intake pipes, engine hoods, automobile chassis, engine fan blades, automobile air conditioner evaporator condensers, etc.

• Start the air intake pipe with PA66+30%GF, which has a long-term temperature resistance of 140℃ for more than 2000 hours.
• Automobile chassis fenders and engine fan blades PA66+30%GF require excellent toughness and strength, as well as very low deformation and dimensional stability.
• Automobile air conditioning evaporator needs good warpage, long-term heat resistance, hydrolysis resistance, high dimensional stability, high strength and toughness, PA66+15%GF+10% talc.

Application 2: Various connectors for electronic accessories This is the application field of halogen-free flame retardant PA66+35%GF in various electronic connectors. Electronic connectors need to have high fluidity, dimensional stability, good electrical properties, and some also require flame retardant properties. At this time, only modified materials can completely replace them.

Application 3: Various high-power fan blades and impellers High rigidity, high toughness, low warpage, creep resistance, hydrolysis resistance modified PA66+30%GF material.

Application 4: Tableware High temperature resistance, food grade, high fluidity, reinforced, PA66+30%GF.

Application 5: Toy field Toy gun stocks, drone propellers, and motor bracket toys generally use medium and high-strength modified plastics, PA66+30%GF, PA66+30% carbon fiber.

Low-strength glass fiber reinforced products

Reinforced nylon materials with a glass fiber addition ratio of 10-20% are mainly suitable for the manufacturing of connectors, tact switches, medical equipment and other components in electronic and electrical products.

Application: Medical equipment field Nylon materials have mechanical strength and skin-friendly feel that ordinary materials do not have. Medical equipment such as foot drop correctors, rehabilitation wheelchairs, and medical nursing beds usually require components with a certain load-bearing capacity, so PA66+15%GF is generally chosen.

Conclusion

By adding an appropriate amount of fiber to nylon, the strength and stiffness of reinforced nylon can be significantly improved. According to the specific requirements of different products, different fiber addition ratios can be selected, and the quality and performance of the product can be ensured through appropriate formulas.