Asa is a ternary polymer developed in the 1970s consisting of acrylonitile, styrene, and acrylate. It is an impact-modified san resin.

Asa is a major product of General Plastics (ge plastics) under General Electric, and in August 2002 it was used as a co-extruded raw material for the pvc color coextrusion profile market in China under the registered trademark of geoly. .

Asa has the following advantages:

1, asa has good mechanical and physical properties

Asa is evolved from abs (abs consists of acrylonitile, butadiene, styrene), which retains the excellent mechanical and physical properties of abs as an engineering plastic.

2, asa has strong weather resistance

When a double bond is contained in a polymer material, the double bond is easily opened by ultraviolet rays in sunlight having a large energy intensity, thereby decomposing the polymer material. And asa replaces the butadiene rubber containing unsaturated double bonds in abs with acrylic rubber containing no unsaturated double bonds. Therefore, it not only resists degradation, aging, fading caused by ultraviolet radiation, but also oxidizes in the atmosphere. The high temperature during processing causes the decomposition or discoloration of asa to be strong, which greatly improves the anti-aging and weather resistance of the material. According to the test results, the anti-aging performance of asa is more than 10 times that of abs.

3, asa has better high temperature performance

4, asa is an anti-static material, can make the surface less dust

Asa application area

Since the advent of asa, its position in a series of applications has been firmly established due to its excellent weatherability and typical mechanical properties similar to abs:

Automotive sector: After a long period of wind erosion, asa will not be as grey as the specially treated anti-aging abs (many micro-cracks and cavitation on the surface due to wind erosion or water flow). Typical applications for asa are external components such as exterior mirrors, radiator grilles, tail baffles, lampshades, etc. under harsh conditions such as sun and rain, strong winds. At present, it has gradually extended to motorcycle panels, camping cars, small hulls, surfboards and other fields.

Horticulture: Asa has proven to be particularly suitable for horticultural irrigation equipment and lawn cutter casings.

Electrical and electronic fields: Shells that are preferred for durable equipment such as sewing machines, telephones, kitchen equipment, satellite antennas, etc.

Construction: Asa/pvc blends are used in roofing siding and window materials. In this respect, there have been more than 10 years of practical application experience abroad.

In the United States, because of its good surface quality and long-lasting color stability, it has been widely used in high-end bathrooms and sanitary products, hot and cold water exchangers, etc., which indicates that asa also has corrosion resistance to detergents and disinfectants.