塞拉尼斯工程材料业务为商用飞机及通用航空领域生产高性能工程聚合物。

自1982年以来，塞拉尼斯一直与航空行业合作，将轻质工程聚合物应用于飞机内外饰部件。采用塞拉尼斯材料制成的这些部件，比传统材料制件更轻，同时即使在高温和腐蚀性燃料环境下，仍能保持硬度、抗冲击性、刚度和尺寸稳定性。

传统上，飞机结构部件由纤维聚合物热固性复合材料制成。该工艺最大的缺点在于基体固化需要较长的干燥时间，从而限制了生产效率。现代结构则更多采用热塑性耐高温工程聚合物复合材料，并通过预浸料和树脂传递模塑（RTM）工艺进行加工。

从生产角度来看，像Fortron® PPS这类热塑性材料实际上具有诸多优势，且通常更具经济性。Fortron® PPS尺寸稳定性更优，耐化学性和耐温性出色，在飞机制造领域拥有悠久的应用历史，常被选作结构部件的首选材料。

Celanese’s engineered materials business produces high performance engineering polymers for the commercial aircraft and general aviation industry Since 1982, Celanese has worked with the industry to incorporate light weight engineering polymers into interior and exterior components. With Celanese materials, these components are lighter than those made from traditional materials and remain hard, impact-resistant, stiff and dimensionally stable, even when exposed to high temperatures and aggressive fuels. Traditionally structural components for aircraft are made from fiber polymer thermoset composites. The greatest disadvantage of this process is the extensive drying times required for the matrix to cure, therefore limiting the production rate. Modern structures utilize higher volumes of thermoplastic high heat engineered polymers composites configured into prepreg and resin transfer molding (RTM) processes. From a production point of view there is actually a great deal in favor of thermoplastic materials like Fortron® PPS, which are often more economical. Fortron® PPS is more dimensionally stable, chemical and temperature resistant, and has a long tradition in aircraft construction where it is often the material of choice in structural components