New Sound Absorbing Materials Obtained from Waste Rigid Polyurethane Foam

Polyurethane foam wastes is one of the environmental problems for which are not still the efficient solutions of valorization. This paper presents the possibility of recovering polyurethane foam waste by obtaining some new materials with sound absorption properties. The polyurethane foam wastes were ground and mixed, in proportion of 0, 3, 5, 7 and 12 wt%, with bicomponent polyurethane foam as a binder, resulting 5 new materials. The sound-absorbing properties of the new materials have been determined and it can be observed that the sound-absorbing properties of rigid polyurethane foam with closed pores can be improved by adding polyurethane foam waste to its structure. In addition, the mechanical properties and thermal conductivity of the new materials were studied.

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Sound absorption properties of rigid polyurethane foam composites with rubber-wood sawdust as a natural filler

Journal of Physics Conference Series ◽

10.1088/1742-6596/1719/1/012062 ◽

2021 ◽

Vol 1719 (1) ◽

pp. 012062

Author(s):

P Chanlert ◽

P Ruamcharoen

Keyword(s):

Polyurethane Foam ◽

Sound Absorption ◽

Rigid Polyurethane Foam ◽

Absorption Properties ◽

Wood Sawdust ◽

Rubber Wood ◽

Natural Filler

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

Materials Today Proceedings ◽

10.1016/j.matpr.2021.10.417 ◽

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

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

Materials ◽

10.3390/ma11040474 ◽

2018 ◽

Vol 11 (4) ◽

pp. 474 ◽

Cited By ~ 10

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

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Bio-based rigid polyurethane foam prepared from apricot stone shell-based polyol for thermal insulation application – Part 2: Morphological, mechanical, and thermal properties

BioResources ◽

10.15376/biores.15.3.6080-6094 ◽

2020 ◽

Vol 15 (3) ◽

pp. 6080-6094

Author(s):

Muhammed Said Fidan ◽

Murat Ertaş

Keyword(s):

Thermal Conductivity ◽

Compressive Strength ◽

Thermal Properties ◽

Thermogravimetric Analysis ◽

Polyurethane Foam ◽

Flame Retardants ◽

Compressive Modulus ◽

Cell Diameter ◽

Mechanical And Thermal Properties ◽

Rigid Polyurethane Foam

The procedure for the liquefaction of apricot stone shells was reported in Part 1. Part 2 of this work determines the morphological, mechanical, and thermal properties of the bio-based rigid polyurethane foam composites (RPUFc). In this study, the thermal conductivity, compressive strength, compressive modulus, thermogravimetric analysis, flammability tests (horizontal burning and limited oxygen index (LOI)) in the flame retardants), and scanning electron microscope (SEM) (cell diameter in the SEM) tests of the RPUFc were performed and compared with control samples. The results showed the thermal conductivity (0.0342 to 0.0362 mW/mK), compressive strength (10.5 to 14.9 kPa), compressive modulus (179.9 to 180.3 kPa), decomposition and residue in the thermogravimetric analysis (230 to 491 °C, 15.31 to 21.61%), UL-94 and LOI in the flame retardants (539.5 to 591.1 mm/min, 17.8 to 18.5%), and cell diameter in the SEM (50.6 to 347.5 μm) of RPUFc attained from liquefied biomass. The results were similar to those of foams obtained from industrial RPUFs, and demonstrated that bio-based RPUFc obtained from liquefied apricot stone shells could be used as a reinforcement filler in the preparation of RPUFs, specifically in construction and insulation materials. Moreover, liquefied apricot stone shell products have potential to be fabricated into rigid polyurethane foam composites.

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