Process and Property Evaluation of Sound Absorption/Thermal Insulation Compound Board

• Main Authors: Pai Chen, 陳湃
• Other Authors: Jin-Mao Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/47737574411892767273

碩士 === 逢甲大學 === 紡織工程所 === 97 === Productivity and material consumption increased with increasing development of technology. However, it creases the more wastes and this is hazarding the global environment and the human life. Therefore, every government in the world begins to pay attention to the environmental protection problems. There are many environmental regulations to protect our environment. For present nonwoven industry, it output is high production and selvages are 3%~5% of the whole output. For this reason, the nonwoven selvages will be recycled in this study. Besides, noise pollution is serious gradually. Working in the noise environment will affect the worker’s concentration and work efficacy. Therefore, the PP nonwoven selvages will be put into two layers of nonwoven with 3 dimension crimp hollow PET fibers. Then the composite nonwoven will be needle punched to make the preformed surface layers. A loose nonwoven with the 3 dimension crimp hollow PET fibers will be used as the core, and they both will be thermal bonded. The experimental parameters will be the ratios of PP nonwoven selvages, laying direction of PP nonwoven selvages and ratios of low melting point PET fibers. The thermal insulation coefficient, LOI, sound absorption coefficient and tensile strength will be evaluated. In this study, the optimum process parameter, thickness of the loose nonwoven is 2.5 cm, laminate of loose nonwoven is 10 layers, the ratio of low melting point PET fiber is 30%, weight per square meter of PP nonwoven selvages addition is 400 g/m2. The NRC could reach 0.52534.