akrüülstüreenkopolümeer

Akrüülstüreenkopolümeer, often abbreviated as SAN, is a transparent, amorphous thermoplastic terpolymer. It is a copolymer of acrylonitrile, butadiene, and styrene. SAN is known for its excellent rigidity, chemical resistance, heat resistance, and good dimensional stability. It offers a good balance of properties, bridging the gap between polystyrene (PS) and acrylonitrile butadiene styrene (ABS).

The presence of acrylonitrile in the polymer chain enhances its chemical resistance and heat deflection temperature compared to pure polystyrene. The styrene component contributes to its processability and rigidity, while the butadiene, although present in smaller amounts than in ABS, can offer some impact modification. SAN is typically produced through emulsion or suspension polymerization processes.

Common applications for akrüülstüreenkopolümeer include housewares such as food storage containers, blender jars, and beverage dispensers. It is also used in appliance components, automotive interior parts, medical devices, and cosmetic packaging due to its clarity, gloss, and resistance to staining and breakage. SAN can be easily colored and processed using standard thermoplastic molding techniques like injection molding and extrusion. It is considered a cost-effective material for applications requiring good clarity and mechanical properties.