탄산칼슘 분말을 충진시킨 열가소성 탄성체 복합재의 제조 및 차음 특성 = Preparation and Sound Insulation Properties of Thermoplastic Elastomer Composites with CaCO₃ Filler

다국어 초록 (Multilingual Abstract)

Composites of ceramic powders and an elastomer-based matrix were prepared by mixing $CaCO_3$ powders with polyethylene and polypropylene elastomers, and their mechanical and sound insulation properties were measured. $CaCO_3$ powders with 0.7 ${\mu}m$ and 35 ${\mu}m$ particle size were added to elastomers up to 80 wt%. Scanning electron microscopy photographs showed uniform distribution of the $CaCO_3$ powders in the matrix. While density and surface hardness increased, melt index, tensile strength and elongation of the composites decreased as the amount of added $CaCO_3$ powders increased. As more $CaCO_3$ powders were added sound transmission loss of the composites increased owing to the increase of density. Addition of 0.7 ${\mu}m$ sized $CaCO_3$ powders resulted in a slightly higher transmission loss than the addition of 35 ${\mu}m$ sized powders because of the increased interface area between the elastomer matrix and the $CaCO_3$ powders. Composites with a polyethylene matrix showed higher transmission loss than those with a polypropylene matrix because the tensile strength and hardness of the polyethylene-based composites were low and their elongation was high.

참고문헌 (Reference)

1 R. D. Corsaro, "Sound and Vibration Damping with Polymers, Chapter 10" American Chemical Society 1990

2 F. Fahy, "Sound and Structural Vibration: Radiation, Transmission and Response" Elsevier 337-351, 2007

3 K. Koyasu, "Noise and Vibration: 1 (in Japanese)" Corona Publishing 181-192, 1977

4 J. S. Kim, "Noise and Vibration, (in Korean)" Sejin Publishing 217-254, 2007

5 M. Iryo, "Noise and Vibration Manual, (in Japanese)" Techno Consultant Inc 96-98, 1978