2021
DOI: 10.1002/app.50715
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The influence of nano‐silica on the thermal conductivity of polyurethane foam

Abstract: 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‐… Show more

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Cited by 11 publications
(9 citation statements)
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“…For Ag NP-LPUF samples, the pore size slightly decreased with the increase of the concentration of feed silver nitrate solution. On one hand, Ag NPs can act as additional nucleation sites during the foaming process, resulting in the reduction of bubble size . Therefore, the increase of the number of nanofillers in the composite may lead to diminishing of the pore size of the materials.…”
Section: Resultsmentioning
confidence: 99%
“…For Ag NP-LPUF samples, the pore size slightly decreased with the increase of the concentration of feed silver nitrate solution. On one hand, Ag NPs can act as additional nucleation sites during the foaming process, resulting in the reduction of bubble size . Therefore, the increase of the number of nanofillers in the composite may lead to diminishing of the pore size of the materials.…”
Section: Resultsmentioning
confidence: 99%
“…In addition, fresh and recovered nanosilica were incorporated in a 2.3 wt %, in order to see if the recovered nanosilica promoted similar modification of the PU foams properties than the fresh one. The selected concentration of nanosilica is similar to that used in previous studies [ 10 , 11 , 12 , 13 , 14 ].…”
Section: Resultsmentioning
confidence: 99%
“…The absorption at 1223 and 1094 cm −1 is attributed to C-O-C vibration of ether group in the PU foam [ 41 , 42 ]. Finally, at 1050 and 808 cm −1 are found in the Si-O-Si signal related to the filler presence in the rigid PU foams [ 14 , 29 ].…”
Section: Resultsmentioning
confidence: 99%
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