Optimization of acoustic performances of a new tung oleic acid‐based composite polyurethane foam

Ji, Yangjie; Chen, Shuming

doi:10.1002/app.47861

Cited by 4 publications

(4 citation statements)

References 41 publications

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“…As a result, green PU foams with satisfactory mechanical and thermal properties were produced. Bio‐based PU foams were successfully fabricated from tung oleic acid‐based polyol by Ji and Chen 30 . The oleic acid‐based composite PU foams displayed good acoustic properties with satisfactory sound absorption coefficient and transmission loss.…”

Section: Resultsmentioning

confidence: 99%

“…Bio-based PU foams were successfully fabricated from tung oleic acidbased polyol by Ji and Chen. 30 The oleic acid-based composite PU foams displayed good acoustic properties with satisfactory sound absorption coefficient and transmission loss. Polyols derived from oleic acid, on the other hand, are a good candidate for production of coatings.…”

Section: Prospective Application Of Urethane From Uoa As An Eco-frien...mentioning

confidence: 95%

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Synthesis and characterization of green urethane non‐isocyanate from oleic acid for wood composite application

Ghozali,

Bakhri,

Triwulandari

et al. 2023

J of Applied Polymer Sci

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Conventional polyurethane (PU) is usually synthesized by a reaction between isocyanate and polyol. The use of isocyanate compounds is associated with significant health and environmental problems. Therefore, it is necessary to develop an environmentally friendly alternative method for manufacturing PUs without isocyanate routes. The aim of this research work was to synthesize green urethane from oleic acid, which included the following three stages: the synthesis of epoxidized oleic acid (EOA), the synthesis of carbonated oleic acid (COA), and the synthesis of green urethane from oleic acid (UOA). The resulting product was characterized by Fourier Transform Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR) analyses, and by determining the iodine number, oxirane number, and hydroxyl value. The results of FTIR and NMR showed that EOA was successfully synthesized. The optimum COA synthesis process was obtained on TBAB catalyst usage of 1% (wt/wt) at 140°C for 48 h with a 500‐rpm stirring rate and CO2 gas flow rate of 0.2 mL/min with the resulting COA oxirane value of 0.00. The optimum condition of UOA synthesis through the aminolysis process resulted in the use of LiCl of 19.8% (wt/wt) at 70°C for 3 h with a stirring speed of 1200 rpm with a UOA hydroxyl number generated of 237.93 mg/mL.

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Section: Resultsmentioning

confidence: 99%

Section: Prospective Application Of Urethane From Uoa As An Eco-frien...mentioning

confidence: 95%

Synthesis and characterization of green urethane non‐isocyanate from oleic acid for wood composite application

Ghozali,

Bakhri,

Triwulandari

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

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“…Using Tung oleic acid-base polyol and polyether polyols a new biobased PU foam different from common PU foam was prepared. The study found that the biobased PU mean sound absorption coefficient and transmission loss can reach 0.515 and 21.389 dB [91].…”

Section: Acousticsmentioning

confidence: 95%

Polyurethane: Recent Engineering Contributions

Feldman

2020

AJOP

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“…The resulting products could be applied as building construction and electromagnetic shielding materials . Many studies on the compression performance of PU foam have been conducted . Yan et al combined a inter/intraply hybrid laminate on high‐density flexible PU foam to improve its mechanical properties .…”

Section: Introductionmentioning

confidence: 99%

Sound absorption and compressive property of PU foam‐filled composite sandwiches: Effects of needle‐punched fabric structure, porous structure, and fabric‐foam interface

Zhang

Wang

et al. 2019

Polymers for Advanced Techs

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The flexible polyurethane (PU) foam-filled composite sandwiches are constructed using three types of needle-punched fabrics (upper layer), PU foam (core layer), and nylon (bottom layer). Different contents of deionized water were used to adjust the pore size and bulk density of PU foam by free-foaming. Effects of needlepunched fabric components, cell structure, and fabric-foam interface on sound absorption and compressive property of the composite sandwiches were investigated. Fabric-foam interface contributes to improve high-frequency sound absorption efficiency. When containing 0.5 wt% water in the core and nylon-glass grid needle-punched composite fabric (NPUN-G) in the upper face, the composite sandwiches exhibited optimal sound absorption of 0.78 at low frequency of 450 Hz, and optimal compressive strength of 14.4 kPa. Combination of needle-punched composite fabric improved the sound absorption coefficient and compressive strength, as high as 223% and 121%, respectively, compared with pure PU foam. This study provided an important basis for the preparation of high-strength composite sandwiches with low-frequency sound absorption.

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Optimization of acoustic performances of a new tung oleic acid‐based composite polyurethane foam

Cited by 4 publications

References 41 publications

Synthesis and characterization of green urethane non‐isocyanate from oleic acid for wood composite application

Synthesis and characterization of green urethane non‐isocyanate from oleic acid for wood composite application

Polyurethane: Recent Engineering Contributions

Sound absorption and compressive property of PU foam‐filled composite sandwiches: Effects of needle‐punched fabric structure, porous structure, and fabric‐foam interface

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