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PA66 plastic has a high melting point in polyamide materials. PA66 plastic still has moisture absorption after molding, and its viscosity is low. The melting point of PA66 plastic is the temperature at which it crystallizes and melts. For crystalline polymer PA66 plastic, it shows a clear melting point. According to the testing method used, the melting point fluctuates within the range of 259~267 ℃. The melting point of PA66 plastic, usually measured by differential thermal analysis, is 264 ℃. If the temperature at which the volume expansion coefficient shows the maximum value is taken as the melting point, then the melting temperature range of nylon-66 is 246~263 ℃. Approaching the theoretical melting temperature of 259 ℃. Drying treatment of PA66 plastic injection characteristics: If the material is sealed before processing, there is no need to dry it. However, if the storage container is opened, it is recommended to dry it in hot air at 85C. If the humidity is greater than 0.2%, vacuum drying at 105C for 12 hours is also required.

Melting temperature: 260~290C. For glass additive products, it is 275~280C. The melting temperature should avoid exceeding 300C.
Mold temperature: It is recommended to be 80C. Mold temperature will affect crystallinity, which in turn will affect the physical properties of the product. regarding
Thin walled plastic parts, if a mold temperature below 40C is used, the crystallinity of the plastic part will change over time. In order to maintain
The geometric stability of plastic parts requires annealing treatment.
Injection pressure: typically between 750 and 1250 bar, depending on the material and product design.
Injection speed: High speed (slightly lower for reinforced materials). PA66 plastic raw material long-term supply PA66 provides SGS PA66 provides sample samples

Comparison of PA66 plastic raw materials and GF characteristics:
Comparison of Performance between Fiberglass Reinforced and Pure PA66 (Tested According to ISO Related Standards)
Application areas of PA66+GF:
Compared with pure PA66, the mechanical properties of PA66+GF have been significantly improved, making PA66+GF more widely used in the automotive industry, such as cylinder head covers, engine mounts and main covers, door handles, lock systems, wheel decorations, car lock handles, ashtrays, switches, etc.
The heat deformation temperature has increased from 70 ℃ to over 220 ℃, and the aging resistance has significantly improved. It can be safely used in fields such as automobiles, machinery, and chemicals to manufacture heat-resistant structural components, such as automotive pressure regulating tanks, air intake manifolds, throttle body radiator slots, fan blade covers, and other components.
The shrinkage rate of glass fiber filled PA66 mold has been reduced from 1.5% to 1.8% to 0.2% to 0.3%, making nylon 66 products flat and without warping, with more stable dimensions. It is widely used in precision components such as gears and coil frames.
The corrosion resistance of PA66+GF has also been significantly improved, which can meet the requirements of automotive radiator slots, radiator middle bracket, water inlet fittings, oil pan, oil filling tank, oil level gauge, automotive water chamber, etc.

Compared with pure PA66, glass fiber reinforced PA66 has significantly improved mechanical strength, rigidity, heat resistance, creep resistance, and fatigue strength, but decreased elongation, molding shrinkage, and moisture absorption.
In summary, PA66+GF has high specific strength, good heat resistance, electrical properties, wear and corrosion resistance, high impact resistance, as well as excellent characteristics such as simple processing methods, low production costs and high efficiency, and economic and environmental protection. Expanded the application space of nylon 66 products in automobiles and electronic appliances, and also widely used in mechanical components, protective covers, fan blades, automotive cooling water tanks, gears, coil skeletons, roller belt covers, chain guides, window insulation profiles and other application fields.

Low temperature resistant PA66 plastic is a semi crystalline crystalline material. Cold resistant PA66 plastic can maintain strong strength and stiffness even at higher temperatures. PA66 plastic still has moisture absorption after molding, which mainly depends on the composition of the material, wall thickness, and environmental conditions. When designing a product, it is important to consider the impact of moisture absorption on geometric stability. In order to improve the mechanical properties of PA66, various modifiers are often added. Glass is a common additive, and sometimes synthetic rubber is added to improve impact resistance. PA66 plastic has lower viscosity, so its flowability is good (but not as good as PA6). This property can be used to process very thin components. Its viscosity is very sensitive to temperature changes. The shrinkage rate of PA66 is between 1% and 2%, and adding glass fiber additives can reduce the shrinkage rate to 0.2% to 1%. The difference in shrinkage rate between the process direction and the direction perpendicular to the process direction is significant. The melting point of PA66 plastic is the temperature at which it crystallizes and melts. For crystalline polymer PA66 plastic, it shows a clear melting point. According to the testing method used, the melting point fluctuates within the range of 259~267 ℃. The melting point of PA66 plastic, usually measured by differential thermal analysis, is 264 ℃. If the temperature at which the volume expansion coefficient shows the maximum value is taken as the melting point, then the melting temperature range of nylon-66 is 246~263 ℃. Approaching the theoretical melting temperature of 259 ℃. Drying treatment of PA66 plastic injection characteristics: If the material is sealed before processing, there is no need to dry it. However, if the storage container is opened, it is recommended to dry it in hot air at 85C. If the humidity is greater than 0.2%, vacuum drying at 105C for 12 hours is also required.