scholarly journals Preparation and Sound Absorption Properties of a Barium Titanate/Nitrile Butadiene Rubber–Polyurethane Foam Composite with Multilayered Structure

Materials ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 474 ◽  
Author(s):  
Xueliang Jiang ◽  
Zhen Yang ◽  
Zhijie Wang ◽  
Fuqing Zhang ◽  
Feng You ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Polyurethane Foam ◽  
Sound Absorption ◽  
Multilayered Structure ◽  
Butadiene Rubber ◽  
Absorption Properties ◽  
Nitrile Butadiene Rubber ◽  
Foam Composite

scholarly journals Preparation and sound absorption properties of barium titanate/nitrile butadiene rubber-polyurethane foam composites with stratified structure

RSC Advances ◽  
2018 ◽  
Vol 8 (37) ◽  
pp. 20968-20975 ◽  
Author(s):  
Xueliang Jiang ◽  
Zhijie Wang ◽  
Zhen Yang ◽  
Fuqing Zhang ◽  
Feng You ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Polyurethane Foam ◽  
Double Layer ◽  
Sound Absorption ◽  
Low Frequency ◽  
Butadiene Rubber ◽  
Absorption Properties ◽  
Frequency Sound ◽  
Pu Foam ◽  
Absorption Performance

BT/NBR-PU foam composites with two different stratified structures including double-layer and alternating multilayered have excellent low-frequency sound absorption performance.

Effects of water hyacinth fiber size on sound absorption properties of advanced recycled palm oil-based polyurethane foam composite

2021 ◽  
Author(s):  
Nathapong Sukhawipat ◽  
Thanathach Yingshataporn-a-nan ◽  
Tanapat Minanandana ◽  
Kitchapat Puksuwan ◽  
Laksana Saengdee ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Palm Oil ◽  
Water Hyacinth ◽  
Sound Absorption ◽  
Absorption Properties ◽  
Foam Composite ◽  
Fiber Size ◽  
Water Hyacinth Fiber

scholarly journals Structural Design and Sound Absorption Properties of Nitrile Butadiene Rubber-Polyurethane Foam Composites with Stratified Structure

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 946 ◽  
Author(s):  
Xueliang Jiang ◽  
Zhijie Wang ◽  
Zhen Yang ◽  
Fuqing Zhang ◽  
Feng You ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Structural Design ◽  
Sandwich Structure ◽  
Sound Absorption ◽  
Low Frequency ◽  
Thickness Ratio ◽  
Butadiene Rubber ◽  
Absorption Mechanism ◽  
Nitrile Butadiene Rubber ◽  
Absorption Performance

Sound absorbing composites with stratified structures, including double-layer and sandwich structures, were prepared through the combination of nitrile butadiene rubber (NBR) and polyurethane foam (PUFM). The effects of the thickness ratio of layers, different stratified structures and the variety of fillers on the sound absorption performance of the NBR-PUFM composites and the sound absorption mechanism were studied. The results show that the NBR-PUFM composite with a sandwich structure and thickness ratio of 1:8:1 displays good sound absorption, which could be improved further by adding fillers. Because the airflow resistivity, resonance absorption, interface dissipation and interface reflection were combined organically in the sandwich structure, the composites show excellent low-frequency sound absorption performance. Moreover, the composite also has advantages in cost and functionalization aspects.

Physical and Sound Absorption Properties of Spent Tea Leaf Fiber Filled Polyurethane Foam Composite

2014 ◽  
Vol 660 ◽  
pp. 541-546 ◽  
Author(s):  
Qumrul Ahsan ◽  
Chia Pooi Ching ◽  
Mohd Yuhazri bin Yaakob
Keyword(s):  
Absorption Coefficient ◽  
Polyurethane Foam ◽  
High Resistance ◽  
Sound Absorption ◽  
Filler Loading ◽  
Tea Plant ◽  
Sound Absorption Coefficient ◽  
Tea Leaves ◽  
Absorption Properties ◽  
Spent Tea Leaves

Spent tea leaves (STL) from tea producing factories can be considered as new resources for sound absorbing polyurethane (PU) matrix composite materials because STL are rich in polyphenols (tannins) which cause high durability, high resistance to fungal and termites, and high resistance to fire. The research aims to study the physical characteristics of STL and the effect of dispersion morphology of STL on the sound absorption properties of polyurethane foam composites by varying filler loading. Three grades of STL fibers either as received or granulated are used in this study, namely BM-FAE and SWBHE derived from the stalk while FIBER-FAE derived from the leaves of the tea plant. The PU/STL composites are fabricated through open molding method with a fiber loading of 16 wt. %. The fabricated composites are then subjected to physical and sound absorption testing as well as microscopic observations to analyze the distribution of filler in composite. The study shows that as-received FIBER-FAE spent tea leaves provide the best sound absorption coefficient and for composites using granulated fibers from any grade have lower sound absorption coefficient. These results show that a novel kind of sound absorption materials with the recycling of waste materials can be obtained for the solution of noise and environmental pollution.

scholarly journals Improved Sound Absorption Properties of Polyurethane Foam Mixed with Textile Waste

2016 ◽  
Vol 85 ◽  
pp. 559-565 ◽  
Author(s):  
Ancuţa-Elena Tiuc ◽  
Horaţiu Vermeşan ◽  
Timea Gabor ◽  
Ovidiu Vasile
Keyword(s):  
Polyurethane Foam ◽  
Sound Absorption ◽  
Absorption Properties ◽  
Textile Waste

scholarly journals Effect of Microscopic Internal Structure on Sound Absorption Properties of Polyurethane Foam by X-ray Computed Tomography Observations

2009 ◽  
Vol 50 (2) ◽  
pp. 373-380 ◽  
Author(s):  
Tsuyoshi Yamashita ◽  
Kazuhiro Suzuki ◽  
Hideki Adachi ◽  
Souichiro Nishino ◽  
Yo Tomota
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Polyurethane Foam ◽  
Sound Absorption ◽  
Absorption Properties ◽  
X Ray ◽  
X Ray Computed

Protective rigid fiber-reinforced polyurethane foam composite boards: Sound absorption, drop-weight impact and mechanical properties

2016 ◽  
Vol 17 (12) ◽  
pp. 2116-2123 ◽  
Author(s):  
Yu-Chun Chuang ◽  
Ting-Ting Li ◽  
Chen-Hung Huang ◽  
Chien-Lin Huang ◽  
Ching-Wen Lou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyurethane Foam ◽  
Sound Absorption ◽  
Fiber Reinforced ◽  
Drop Weight ◽  
Foam Composite ◽  
Weight Impact

Multi-layered sound absorption structure composed of nonwoven fabrics and polyethylene membranes

2020 ◽  
pp. 152808372096195
Author(s):  
Xiaoning Tang ◽  
Xueting Liu ◽  
Xiansheng Zhang ◽  
Shangyong Zhang
Keyword(s):  
Sound Absorption ◽  
Nonwoven Fabric ◽  
Multilayered Structure ◽  
Acoustic Measurement ◽  
Stacking Sequence ◽  
Absorption Coefficients ◽  
Absorption Properties ◽  
Nonwoven Fabrics ◽  
Layer Stacking ◽  
Different Thickness

This work has focused on the improvement of the sound absorption properties of multilayered structure. Nonwoven fabrics with three different thickness were used to fabricate multilayered absorber. Polyethylene membrane was then incorporated into the multilayered structure with different combinations. The acoustic measurement indicated that polyethylene membrane can improve the sound absorption properties when the thickness of nonwoven fabric is 1.01 mm and 2.38 mm respectively. However, the incorporation of polyethylene membrane will decrease the sound absorption coefficients when the thickness of nonwoven fabric is 3.41 mm. This study has indicated that the thickness of nonwoven fabric and the layer stacking sequence should be focused on consideration to prepare multilayered sound absorber.

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