A Novel Rigid PU Foam Based on Modified Used Palm Oil as Sound Absorbing Material

Riyapan, Duangporn; Saetung, Anuwat; Saetung, Nitinart

doi:10.1007/s10924-019-01460-9

Cited by 26 publications

(24 citation statements)

References 30 publications

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“…The UPO benefits include not only reduced environmental waste, but also value-added waste [ 14 , 15 , 16 ]. Riyapan et al [ 17 ] prepared PUF from UPO via simultaneous epoxidation and a ring-opening reaction. The PUF sample had low sound absorption coefficients due to its closed-cell and large-cell structure.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Rigid Polyurethane Foam from Wasted Palm Oil and Water Hyacinth Fiber Composite—A Green Sound-Absorbing Material

et al. 2022

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A novel rigid sound-absorbing material made from used palm oil-based polyurethane foam (PUF) and water hyacinth fiber (WHF) composite was developed in this research. The NCO index was set at 100, while the WHF content was set at 1%wt with mesh sizes ranging from 80 to 20. The mechanical properties, the morphology, the flammability, and the sound absorption coefficient (SAC) of the PUF composite were all investigated. When the WHF size was reduced from 80 to 20, the compression strength of the PUF increased from 0.33 to 0.47 N/mm2. Furthermore, the use of small fiber size resulted in a smaller pore size of the PUF composite and improved the sound absorption and flammability. A feasible sound-absorbing material was a PUF composite with a WHF mesh size of 80 and an SAC value of 0.92. As a result, PUF derived from both water hyacinth and used palm oil could be a promising green alternative material for sound-absorbing applications.

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Section: Introductionmentioning

confidence: 99%

Sustainable Rigid Polyurethane Foam from Wasted Palm Oil and Water Hyacinth Fiber Composite—A Green Sound-Absorbing Material

et al. 2022

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“…Natural oils, which can be derived from both plant and animal sources, are found in abundance in all parts of the world, providing an ideal petroleum‐substitute from a chemical feedstock. Recently, monoglycerides produced from plant oils (rapeseed, soybean, palm oil, and so forth) are used to synthesize polyester polyols, which are used as raw materials in the preparation of rigid PUF 2,4 . Moreover, the natural oil can also be used as a main component of polyol in polyurethane coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, monoglycerides produced from plant oils (rapeseed, soybean, palm oil, and so forth) are used to synthesize polyester polyols, which are used as raw materials in the preparation of rigid PUF. 2,4 Moreover, the natural oil can also be used as a main component of polyol in polyurethane coatings. Thus, Raychura et al 5 have studied the development of wood finished polyurethane coating from peanut oil.…”

Section: Introductionmentioning

confidence: 99%

The influence of nano‐silica on the thermal conductivity of polyurethane foam

Uyen

et al. 2021

J of Applied Polymer Sci

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This study reports the influence of nano‐silica particles (0.0–0.45 %wt) on properties of polyurethane foams (PUF) using monoglycerides, sorbitol, and glycerol as components of polyol. The morphology, density, mechanical, thermal stability, and thermal conductivity properties of samples were investigated in this study. When 0.35 %Wt of nano‐silica was used to reinforce PUF, the compression strength of PUF achieved the highest value (82.49 kPa). The thermal gravimetric analysis showed that the presence of nano‐silica can improve the thermal stability of PUF samples. Scanning electron microscopy studies indicated that PUF samples containing 0.3, 0.35, and 0.45 %Wt of nano‐silica had more uniform cell structures than pure PUF sample. Finally, the thermal conductivity of pure PUF and PUF/nano‐silica were measured at three different levels of humidity (33% RH, 57% RH and 75% RH) at 25°C. The lowest thermal conductivity value achieved was 0.034 W/mK.

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“…[3] As a chemical blowing agent, water is ecofriendly and safer than physical blowing agents, and generates PU foam with the generation of CO 2 gas only during the reaction, fueling the interest in water-blown PU foam. [4,5] PU foam is used in the construction, transportation, and medical fields, and is also used in studies of biopolyol-based PU foams [6,7] and natural filler-added PU composites. [8,9] However, water-blown PU foam, especially lowdensity foam, is dimensionally unstable due to the change of pressure within the cells of PU foam.…”

Section: Introductionmentioning

confidence: 99%

Improved dimensional stability of water‐blown polyurethane foam with aluminum hydroxide and magnesium hydroxide

Yi¹,

Cho²,

Roh

2020

J of Applied Polymer Sci

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Water is eco‐friendly and safe; thus, it used as a blowing agent in the fabrication of water‐blown polyurethane (PU) foam. However, water‐blown PU foam may experience dimensional instability due to shrinkage of the cells inside the foam. In order to reduce cell shrinkage due to the loss of CO2 gas, vacuum formation is prevented in the closed‐cell foam and the maximum reaction temperature must be raised to increase the degree of curing of the PU foam. In this study, two flame retardants, aluminum trihydrate (ATH) and magnesium dihydrate (MDH), were selected as additives to partially open the cells and increase the maximum reaction temperature. ATH and MDH were both effective for increasing the maximum foam reaction temperature and decreasing dimensional change. Notably, PU foams with 7.5 wt% ATH were the most dimensionally stable at both room temperature and high temperature. Moreover, the compressive strength and flexural strength of such foams were also improved compared to those of the foams without any additive.

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A Novel Rigid PU Foam Based on Modified Used Palm Oil as Sound Absorbing Material

Cited by 26 publications

References 30 publications

Sustainable Rigid Polyurethane Foam from Wasted Palm Oil and Water Hyacinth Fiber Composite—A Green Sound-Absorbing Material

Sustainable Rigid Polyurethane Foam from Wasted Palm Oil and Water Hyacinth Fiber Composite—A Green Sound-Absorbing Material

The influence of nano‐silica on the thermal conductivity of polyurethane foam

Improved dimensional stability of water‐blown polyurethane foam with aluminum hydroxide and magnesium hydroxide

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