Noise is considered severe environmental pollutant that affects human health. Using sound
absorption materials to reduce noise is a way to decrease the hazards of noise pollution …

This paper presents a comparative analysis of bio-based polyurethane insulations and
conventional polyurethanes, emphasizing their mechanical properties, thermal and acoustic …

Flexible polyurethane (PU) foams are widely used in automotive industries as sound
absorbing materials because their porous structure is beneficial for absorbing sound waves …

Foams are widely used for applications in construction, energy absorption, and building
insulation. We developed sustainable chitin/chitosan-based foams derived from snow crab …

Although lignin is a promising candidate as a source of polyol for producing eco-friendly
polyurethane foam (PUF), its direct application has limitations, primarily stemming from the …

The rising awareness of the critical nature of noise pollution is driving more efforts toward
the development of new sound-absorbing materials for use in a variety of engineering …

This study aims to investigate the potential of integrating natural biochar (BC) derived from
eggshell waste into flexible polyurethane (FPU) foam to enhance its mechanical and …

This study examines the influence of polyurethane porous materials and carbon dioxide on
hydrogen/air explosions within an enclosed vessel. Through analysis of peak overpressure …

The 3D printing process allows complex structures to be obtained with low environmental
impact using biodegradable materials. This work aims to develop and acoustically …

Honeycomb composites have been widely used in aerospace, transportation and other
fields due to the excellent mechanical and acoustic properties. Acoustic properties are …