I.         PA Description

PA is recognized as the most widely used and known engineering plastic in the current market.

PA6 has the best performance, very tough, even at low temperatures, and high hardness in the surface, toughness, mechanical lower shock, and abrasion resistance. Combined with these characteristics and good insulation, and chemical properties, it has become common-level materials. It’s widely used in a variety of mechanical structures and spare parts. Compared to PA6, PA66 own the higher hardness, rigidity, a good resistance to wear and heat deflection temperature.

II.        PA Characteristics

Advantage:                                                                         

²  High strength and stiffness

²  High impact and notch impact strength

²  High heat deflection temperature

²  Good at dampening

²  Good abrasion resistance

²  Low coefficient of friction

²  Good chemical stability against organic solvents and fuels

²  Excellent electrical properties, ease of printing and dyeing

²  Food safe, noise reduction

Disadvantage:

² Poor dimension stability, electrical and mechanical properties may become affected by absorbing moisture or water.

² Poor acidproof ability, can’t dye with acid or touch overmuch acid.

² Poor lightfastness, poor endurance in pollution.