Tribological performance of polymethyl methacrylate as an aviation polymer

Abstract

Polymethyl methacrylate (PMMA) is one of the most popular synthetic polymers in aircraft windshields as an alternative to glass, due to its lightweight, high transparency and impact-resistant characteristics. The erosion behavior of PMMA is critical when used as an alternative to glass in an aircraft windshield. This paper presents experimental data on the effects of particle size, velocity and impingement angle on the roughness of PMMA, using 3D optical profilometry after solid particle erosion tests. Particular attention is paid to determining the different morphologies of imprints and cracks with regard to particle size, impact velocity and impingement angle. It is further shown that the removed volume in overlapping impacts measured by 3D profilometry is captured well. It is demonstrated that maximum erosion rate occurred at a 30° impingement angle and correlates well with the ductile erosion behavior of PMMA. Detailed worn surface analysis was performed using 3D optical profilometer scanning to investigate effects of particle size, velocity and impingement angle on the roughness of PMMA.

Effectiveness of poly(methyl methacrylate) spray encapsulation for perovskite solar cells

“…PMMA, also known as acrylic, is a commonly used transparent thermoplastic with good impact strength and a glass transition temperature of 108 • C [16]. Given these properties, PMMA has seen commercial up take in replacing glass as a lightweight, shatter-resistant glass alternative since the 1930's [17,18]. While a major focus is for scalable PMMA sheets, such as Perspex ® , PMMA is also dissolvable in many organic solvents allowing for the creation of PMMA inks and coatings [19].…”