LFT-G PA66 Nylon66 plástico color natural para aparatos electrónicos

Product information

PA66, abbreviation of English Polyamide 66, chemical name polyadiptyl adiptyl diamine, commonly known as nylon 66. Is a colorless transparent semi-crystalline thermoplastic polymer, widely used in automobiles, electronic appliances, mechanical instruments, industrial parts and other industries. However, due to the large absorbency of nylon itself, poor acid resistance, low impact strength of dry state and low temperature, and easy deformation after water absorption, the dimensional stability of the product is affected, so that its application range is limited to some extent. In order to improve the above shortcomings, expand its application field, and better meet the requirements of performance, people adopt a variety of methods to modify PA66 plastic. 

So as to improve the impact property, thermal deformation property, forming processing property and chemical corrosion resistance. Because the specific strength and Young's modulus of glass fiber (GF) are 10~20 times larger than that of PA66, the linear expansion coefficient is about 1/20 of that of PA66, the water absorption is close to zero, and it has good heat and chemical resistance, glass fiber filling is the most commonly used enhancement modification method of PA66.

Product datasheet

Compared with pure PA66, the mechanical strength, rigidity, heat resistance, creep resistance and fatigue resistance of glass fiber reinforced PA66 are greatly improved, while the elongation, molding shrinkage and hygroscopic property are decreased.

Application

Compared with pure PA66, the mechanical properties of PA66+GF are greatly improved, which makes PA66+GF more widely used in the automobile industry, such as cylinder head cover, engine seat and total cover, door handles, lock systems, wheel decoration, car lock handle, ashtray, switch, etc.

The thermal deformation temperature is increased from 70℃ to more than 220℃, and the aging resistance is significantly improved. It can be safely used in automotive, machinery, chemical and other fields to manufacture heat-resistant structural parts, such as automotive pressure regulator, air intake manifold, throttle valve radiator groove, fan blade guard and other parts.

Glass fiber filled PA66 mold shrinkage from the original 1.5%~1.8% to 0.2%~0.3%, making nylon 66 products flat without warping, size is more stable, widely used in gear, coil skeleton and other precision parts.

Way to distinguish PA6 and PA66

Tanto PA6 como PA66 arden con olor a lana y clavos quemados, PA6 con llama amarilla clara y PA66 con llama azul. PA6 es más dúctil, menos costoso que PA66 y tiene un punto de fusión más bajo (225 grados). PA66 tiene buena fuerza, resistencia al desgaste y alto punto de fusión (255 grados).

El punto de fusión de PA66 es de 260~265 ℃ y la temperatura de transición vítrea (estado seco) es de 50 ℃. La densidad es de 1,13~1,16 g/cc. Partículas de polímero cristalino opalescente translúcido u opaco PA6, punto de fusión 220 ℃, temperatura de descomposición térmica superior a 310 ℃, densidad relativa 1,14, tasa de absorción de agua (24 horas en 23 ℃ agua) 1,8 %, tiene una excelente resistencia al desgaste y autolubricación, alta resistencia mecánica, resistencia al calor, rendimiento de aislamiento eléctrico, rendimiento a baja temperatura, autoapagado y resistencia química. Especialmente buena resistencia al aceite. En comparación con PA66, PA6 tiene las ventajas de un fácil procesamiento y moldeado, un buen brillo superficial y un amplio rango de temperatura, pero una mayor absorción de agua y una estabilidad dimensional deficiente. Rigidez pequeña, punto de fusión bajo, se puede utilizar en entornos hostiles durante mucho tiempo,

Propiedades mecánicas: PA66 > PA6 Propiedades del medio térmico: PA66 > PA6 Precio: PA66 > PA6 Punto de fusión: PA66 > PA6 Absorción de agua: PA66< PA6 Resistencia a la intemperie: PA66< PA6 Tiempo de condensación: PA66< PA6 Rendimiento de moldeo: PA66< PA6