A sound-absorbing and heat-insulating collagen fiber composite material

Abstract

Using methacrylic acid (MAA) and methyl methacrylate (MMA) as core monomers and polystyrene as the shell layer, polymer hollow microspheres (PHM) with good stability were prepared by using an alkali osmotic swelling method followed by spray drying. The average size of the PHM was approximately 875 nm. As a filling cross-linking agent, the PHM were added to a skin collagen material to disperse and fix, and a “polymer hollow microsphere composite collagen fiber” (PHCC) material was obtained. The results show that the PHM improve the mechanical strength, thermal stability and water resistance of the skin collagen material. The PHCC material has a low thermal conductivity (0.035 W/(K·m)) and excellent sound insulation performance and retains the soft and delicate touch of leather, which has application value in high-grade decorative materials and functional leather. This provides a new approach for developing flexible sound-absorbing thermal insulation materials.

Research progress of piezoelectric polymer PVDF in sound absorption technology

“…Research shows that the development of functional polymer materials, which has occurred recently, has played a significant role in the advancement of acoustic noise reduction technologies. [17][18][19][20][21] Piezoelectric materials are a common type of functional polymer material that can achieve the reciprocal conversion between electric energy and mechanical energy by using positive and negative electric effects. As a result, they are being employed more frequently in the field of noise control.…”