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This paper presents the preliminary work on rigid palm oil-based polyurethane foam reinforced with nanoclay for load bearing purposes. In this work, palm oil-based polyol (POP) was reacted with polymeric 4,4’-diphenylmethane diisocyanate (p-MDI) along with distilled water as the blowing agent, silicone surfactant, and montmorillonite (MMT) clay as...
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... palm oil-based polyol was first weighed according to desired formulation as illustrated in Table 1 together with silicone surfactant and distilled water before stirred for 2 minutes with magnetic stirrer at 500 rpm for homogeneity. The powdered modified MMT was then introduced into the solution and further stirred for 2 minutes, forming premixture. ...Similar publications
Abstract: In this study, a novel technology is reported to prepare a piezoresistive polyurethane-silicone rubber nanocomposite. Polyurethane (PU) foam was loaded with a nitrogen-doped bamboo-shaped carbon nanotube (N-BCNT) by using dip-coating, and then, impregnated with silicone rubber. PU was used as a supporting substrate for N-BCNT, while silic...
Polyurethane (PU) foams are widely used today in automotive and as insulation system. Due to environmental issues, efforts have been made to replace petrochemical polyol with natural-based polyol in PU foam production, without sacrificing any properties. This study aims as to produce palm oil-based polyurethane composite foam for load bearing purpo...
In this paper, silicone rubber materials with foam/solid alternating multilayered structures were successfully constructed by combining the two methods of multilayered hot-pressing and supercritical carbon dioxide (SCCO2) foaming. The cellular morphology and mechanical properties of the foam/solid alternating multilayered silicone rubber materials...
Citations
... Surfactants regulate the foam structure and cell size during foam production. A surfactant molecule consists of a hydrophilic head and a hydrophobic tail which reduces the surface tension and provides an interface between the polar surfaces of the resin and non-polar blowing agent [86][87][88][89][90][91]. Some commonly used surfactants in the manufacture of PU foam include poly(siloxane ether) and copolymers of poly (ethylene oxideco-propylene oxide) [92] Dhaliwal et al. [91] reported the effects of different surfactants such as Dow Corning DC 2937, Dow Corning DC 2938, Tegostab B8466, Tegostab B8870, and Xiameter OFX 0193 on various foam properties. ...
A surge of research into renewable foams has yielded an array of high‐performance polymeric materials, many of which exhibit promising properties for next generation thermal insulating materials. Biobased materials are of particular interest, due to growing concerns towards enhancing the circular economy while reducing fossil fuel dependency in the construction industry. This review outlines recent developments in biobased foams based on biobased polyurethanes (BPU), biobased phenol formaldehyde (BPF) and cellulose nanofibers (CNF) foams. These three areas of polymers are of particular interest due to their early stage of market adoption, yet significant industrial potential. As our focus is on construction materials, we will review their thermal, mechanical, and fire‐retardant performance, their synthesis/fabrication methods and future prospects. Improving the scalability, reproducibility and cost‐effectiveness of their production is vital for successful commercialization adoption.
... Surfactants regulate the foam structure and cell size during foam production. A surfactant molecule consists of a hydrophilic head and a hydrophobic tail which reduces the surface tension and provides an interface between the polar surfaces of the resin and non-polar blowing agent [86][87][88][89][90][91]. Some commonly used surfactants in the manufacture of PU foam include poly(siloxane ether) and copolymers of poly (ethylene oxideco-propylene oxide) [92] Dhaliwal et al. [91] reported the effects of different surfactants such as Dow Corning DC 2937, Dow Corning DC 2938, Tegostab B8466, Tegostab B8870, and Xiameter OFX 0193 on various foam properties. ...
Integration of organic nanoclay into bio-based polyurethane (PU) foam is a promising alternative to enhance the foam's properties via green technology. In this paper, modified diaminopropane montmorillonite (DAP-MMT) nanoclay was introduced into palm oil-based PU foam at different weight loadings, namely, 0, 2, 4, 6, 8, and 10 wt.%, in order to investigate the effects on the mechanical and thermal properties of the foam. Several tests and characterizations were carried out to study the surface morphology, density, compressive strength and thermal stability of the foam. It was found that foam exhibited an exfoliated or intercalated microstructure based on the DAP-MMT contents. The X-ray diffraction analysis showed that below 4 wt.%, the foams displayed exfoliated structures while beyond the value, the foams exhibited the intercalated morphologies. Closed cells with different cell sizes were observed when the DAP-MMT contents were varied. Meanwhile, thermal stability and compressive strength of foams increased with increasing DAP-MMT contents up to 4 wt.%, as shown by thermogravimetry analysis and compression test, respectively.
