The effect of oil palm trunk particles and composite density on the physical and mechanical properties of rigid polyurethane foam composite

Munawar, Sasa Sofyan; Widyanto, C D; Hutahean, L S; Purnomo, Dwi; Subiyanto, Bambang; Ismadi, Ismadi; Syahrir, A; Akbar, Firdaus; Kosasih, Deny Poniman

doi:10.1088/1755-1315/891/1/012003

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…The mechanical properties mostly depend on the cell structure of the foams, the uniformity and size of the cells, and also the apparent density. A more compact cellular structure determines a higher apparent density; consequently, more material per unit area decides the higher mechanical strength of the final product [ 45 ]. Figure 6 shows the compressive strength values of bioPUR foams modified with LigW, LigW/LG 1:1, and LigW/LG 1:2 particles.…”

Section: Resultsmentioning

confidence: 99%

Impact of Different Ratios of Lignin Waste and Liquid Glass on the Performance Characteristics of Biopolyurethane Foams

et al. 2023

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In the current study, biopolyurethane foam was modified with 2.5–10 wt.% lignin waste (LigW) and liquid glass (LG)-modified LigW particles at different LigW/LG ratios—1:1 and 1:2—and their impact on performance characteristics—i.e., rheology, foaming times, apparent density, thermal conductivity before and after aging, dimensional stability at ambient and elevated conditions, compressive and tensile strengths, short-term water absorption by partial immersion, and water vapor permeability—was determined and evaluated. Structural analysis was implemented and structural parameters were taken into consideration as well. During the study, it was determined that 2.5–10 wt.% particles at the LigW/LG ratio of 1:2 showed a superior impact on the physical and mechanical properties of bioPUR foams. The apparent density only insignificantly increased and was in a density range suitable for commercially available polyurethanes. For particles at 10 wt.% and LigW/LG ratio of 1:1, the thermal conductivity value improved by 3.2%, the compressive strength increased by 153%, while the tensile strength improved by 23.5%, indicating sufficient interfacial adhesion between the filler and polymer matrix. Moreover, the short-term water absorption by partial immersion remained almost unchanged, while the water vapour diffusion resistance factor improved from 43 to 48. Additionally, the incorporation of LigW/LG 1:1 and LigW/LG 1:2 particles made it possible to obtain dimensionally and structurally stable closed-cell bioPUR foams for possible application as thermal insulation in building envelopes.

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Section: Resultsmentioning

confidence: 99%

Impact of Different Ratios of Lignin Waste and Liquid Glass on the Performance Characteristics of Biopolyurethane Foams

et al. 2023

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“…This result is related to the higher density at particle contents of 2.5% and 7.5%. According to Munawar et al [25], the higher density results in higher IB values. The 5% and 7.5% particle content produced the highest IB values significantly, while the 2.5% and 10% fiber content were not statistically significant.…”

Section: Internal Bond Strengthmentioning

confidence: 94%

The RPUF Composite’s Physical and Mechanical Properties with Ramie Stem Particle Reinforcement

Stafian Nisa,

Dede Hermawan,

Sasa Sofyan Munawar

et al. 2024

J. Sylva Indonesiana

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Rigid polyurethane foam (RPUF) is a common insulation material that has low thermal conductivity and good mechanical properties. The qualities of RPUF may be enhanced by adding natural fiber reinforcing. The purpose of this work is to examine how the mechanical and physical characteristics of RPUF composite are affected by the amount of ramie stem particles present. Japanese Industrial Standard (JIS) A 5908-2003 is the basis for the mechanical test (modulus of elasticity, modulus of rupture, compressive strength, internal bond) and the physical test (density, moisture content, water absorption). The study's findings suggest that the physical properties of the RPUF composite were affected by the addition of ramie particles for reinforcement. The density increase in particle content 2.5% – 7.5% range, is not statistically significant. The MC and WA increased statistically significantly. The values of MOE and MOR were not significantly different. In fact, with the addition of 2.5% and 5% ramie particles, the compressive strength value was higher than the RPUF composite without ramie particle filler. Then overall, the IB value was increased by increasing the ramie particles in the RPUF composite. The addition of 2.5-5% ramie particles into the RPUF composite showed optimum results in mechanical properties. Thereby, the addition of ramie particles in the RPUF composite means reducing the use of polyurethane. Therefore, it can reduce production costs. Then the product is more environmentally friendly

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“…This can be attributed to reactions between the NO and CP in the foaming system, which might have served as additional nucleating sites for bubble formation, slowing down the blowing and polymerization reactions. This led to a longer creaming, rising, and tack-free time than the blank foam [52]. However, Rattanapan [53] made a different observation in the creaming, rising, and tack-free time of biobased polyurethane foams prepared using telechelic hydroxyl oligomers from natural rubber (HTNR), waste tire crumbs (HTWT), and polycaprolactone diol (PCL).…”

Section: 7mentioning

confidence: 99%

Synthesis and Morphology of Flexible Polyurethane Foams Containing Neem Oil and Clove Powder

Kuranchie,

Yaya,

Aboagye-Antwi

et al. 2024

International Journal of Polymer Science

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Polyurethane foams are a versatile class of polymeric materials whose physico-chemical structure and properties can be modified by incorporating additives. This study examined the effect of naturally occurring insect-repelling additives such as neem oil (NO) and clove powder (CP) on the formulation and morphology of flexible polyurethane foam (FPUF) composites. The foams were prepared by the prepolymer method using a box test as applied in the foam industry. The composite material was formulated by varying the isocyanate index (103 and 108) as an excess amount of isocyanate was required to react with the additives. The formulation at 103 was unsuccessful as the foams collapsed immediately after rising. However, at 108, two main categories of foams were successfully prepared: foams containing either NO or CP and the other containing both additives. The effect of these additives on the formulation was examined by monitoring the foam reaction using the cream, tack-free, and rising times. It was observed that the cream, tack-free, and rising times increased with increasing NO/CP content. Conversely, the morphology was studied using scanning electron microscopy (SEM) and optical microscope (OP). The SEM images revealed disruption of the foam network with 1 wt% NO, likewise those containing 1 wt% CP. The cellular network of the foams with simultaneous addition of NO and CP was similar to that of the neat foams and had no broken cell joints and struts due to better dispersion of the additives in the polyurethane matrix. The study indicates that the combined addition of NO and CP modifies the morphology of FPUF, which can influence their physico-mechanical properties.

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The effect of oil palm trunk particles and composite density on the physical and mechanical properties of rigid polyurethane foam composite

Cited by 4 publications

References 17 publications

Impact of Different Ratios of Lignin Waste and Liquid Glass on the Performance Characteristics of Biopolyurethane Foams

Impact of Different Ratios of Lignin Waste and Liquid Glass on the Performance Characteristics of Biopolyurethane Foams

The RPUF Composite’s Physical and Mechanical Properties with Ramie Stem Particle Reinforcement

Synthesis and Morphology of Flexible Polyurethane Foams Containing Neem Oil and Clove Powder

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