Applying Vermiculite and Perlite Fillers to Sound-Absorbing/Thermal-Insulating Resilient PU Foam Composites

作者：Li Ting Ting; Chuang Yu Chun; Huang Chen Hung; Lou Ching Wen; Lin Jia Horng^*

来源：Fibers and Polymers, 2015, 16(3): 691-698.

DOI：10.1007/s12221-015-0691-8

• Foam
• Vermiculite
• Resilience
• Sound absorption
• Thermal insulation

Vermiculite and perlite fillers were incorporated into polyurethane (PU) foam to improve sound absorbing, thermal insulating and rebound resilience properties. This article investigated effects of fillers content and foam density on sound absorbing, thermal insulating and rebound resilience properties of resultant PU foam composites. The result indicates that, after vermiculite and perlite fillers addition, sound absorption peak shifted to lower frequency, thermal insulation and rebound resilience improved simultaneously. Sound absorption and thermal insulation improved with foam density and vermiculites content. Comparatively, smaller vermiculites and bigger perlites in PU foam displayed better sound absorbing and thermal insulating property. The resultant PU foam composite possessed 0.87 absorption coefficients at 1000 Hz, 0.054 W/mK thermal conductivity, and 40 % rebound resilience rate, after addition of 5 wt% vermiculites in diameter of 0.71-2.00 mm and foaming at 50 kg/m(3).

• 出版日期2015-3-30
• 单位天津工业大学; 中国医科大学