Sanchez-Soto et al 2022a - Revision history

Materiales.Compuestos at 20:46, 10 November 2022

2022-11-10T20:46:29Z

Materiales.Compuestos at 20:43, 10 November 2022

2022-11-10T20:43:27Z

Materiales.Compuestos: Materiales.Compuestos moved page Review 572591373557 to Sanchez-Soto et al 2022a

2022-05-08T15:18:31Z

Materiales.Compuestos moved page Review 572591373557 to Sanchez-Soto et al 2022a

Materiales.Compuestos: Materiales.Compuestos moved page Draft Compuestos 234726039 to Review 572591373557

2022-05-08T15:18:06Z

Materiales.Compuestos moved page Draft Compuestos 234726039 to Review 572591373557

Materiales.Compuestos at 15:03, 8 May 2022

2022-05-08T15:03:52Z

Materiales.Compuestos: Created page with "
M. Sánchez-Soto^a, L.G. De la Cruz^a, P.Joniken^b, T. Abt
2022-05-08T14:53:24Z

Created page with " <div class="center" style="width: auto; margin-left: auto; margin-right: auto;"> M. Sánchez-Sotoa, L.G. De la Cruza, P.Jonikenb, T. Abt<sup..."
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 Table 1 shows the apparent density results of different aerogel composites. Which contemplates both the volume of the solid as well as one of the voids either open or closed type. As expected, the crosslinking slightly raises the density in parallel to the submerged time in borax due to the formation of a more compact structure that initiates in the skin and grows through the inner core of samples. Due to the similar results of the mechanical properties with the time of Borax treatment either of 15 or 30 minutes (P5C5B15, t=15 min, &#x03bb;=0.043 W/mK) (P5C5B30 t=30 min, &#x03bb;=0.037 W/mK), only P5C5B30 is analysed.
-'''Table 1.''' Mechanical and thermal conductivity properties of aerogels
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 As it can be observed that 8C2A shows much better thermal stability than P5C5 which reinforce the idea of using it as the top layer in the P5C5 / 8C2A aerogel.
-'''Table 2.''' TGA data of aerogels in N<sub>2 </sub>atmosphere.
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 <span style="text-align: center; font-size: 75%;">'''Figure 4'''. TGA weight loss (a) and DTG curves (b).</span></div>
-'''Table 3.''' Burning parameters of  EPS and aerogels at a heat flux of 35 kW/m<sup>2</sup>
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 Table 1 shows the apparent density results of different aerogel composites. Which contemplates both the volume of the solid as well as one of the voids either open or closed type. As expected, the crosslinking slightly raises the density in parallel to the submerged time in borax due to the formation of a more compact structure that initiates in the skin and grows through the inner core of samples. Due to the similar results of the mechanical properties with the time of Borax treatment either of 15 or 30 minutes (P5C5B15, t=15 min, &#x03bb;=0.043 W/mK) (P5C5B30 t=30 min, &#x03bb;=0.037 W/mK), only P5C5B30 is analysed.
-'''Table 1.''' Mechanical and thermal conductivity properties of aerogels.
+'''Table 1.''' Mechanical and thermal conductivity properties of aerogels
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 <div class="center" style="width: auto; margin-left: auto; margin-right: auto;">
-<span style="text-align: center; font-size: 75%;">'''Figure 3.''' Photograph of a tri-layered aerogel made in one step process</span></div>
+<span style="text-align: center; font-size: 75%;">'''Figure 3.''' Photograph of a tri-layered aerogel made in one step process.</span></div>
 ==='''3.4''' Thermogravimetric analysis===
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 <span style="text-align: center; font-size: 75%;">'''Figure 4'''. TGA weight loss (a) and DTG curves (b).</span></div>
-'''Table 3.''' Burning parameters of  EPS and aerogels at a heat flux of 35 kW/m<sup>2</sup>.
+'''Table 3.''' Burning parameters of  EPS and aerogels at a heat flux of 35 kW/m<sup>2</sup>
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 Fig. 5 illustrates the HHR of PVA /MMT aerogels with borax treatment and aerogel composites with alginate / MMT and Al(OH)<sub>3</sub> / MMT layers. The addition of a top layer significantly decreased and delayed the PHRR of the base material, P5C5. The presence of clay generated a slow degradation and intumescence mechanism, widening the HHR curve between 120ºC and 400ºC. This fact suggests that with this top layer, the P5C5/8C2A(1s) and P5C5 / 8Al2A(1s) had a higher fire resistant in comparison to the unmodified one. However, P5C5 / 8Al2A (1s) produced more THR than P5C5/8C2A(1s). In the same way, P5C5B15 and P5C5B30 denoted a 50% increase of total heat release with respect to P5C5. Moreover, by the residual weight, it can be seen that all the samples lost between 40-60% of their initial weight, which depends on the amount of clay in each aerogel.
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+<span id="_GoBack"></span>
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-<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">
-M. Sánchez-Soto<sup>a</sup>, L.G. De la Cruz<sup>a</sup>, P.Joniken<sup>b</sup>, T. Abt<sup>a</sup>, J. Cailloux<sup>a</sup>, M.LI. Maspoch<sup>a</sup>, O.O. Santana<sup>a </sup> </div>
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-<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">
-<span style="text-align: center; font-size: 75%;"><sup>a</sup>Centre Català del Plàstic, Universitat Politècnica de Catalunya, Barcelona Tech, Terrassa, 08222, Bracelona, Spain.</span></div>
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-<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">
-<span style="text-align: center; font-size: 75%;"><sup>b</sup>Case Western Reserve University, Cleveland,  Ohio, USA.</span></div>
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-{| style="width: 87%;border-collapse: collapse;"
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-|  colspan='2'  style="vertical-align: top;"|<big>Aerogeles compuestos multicapa a partir de biopolimeros y arcilla</big>
-|-
-|  style="border-bottom: 1pt solid black;vertical-align: top;"|<span style="text-align: center; font-size: 75%;"> [[Image:Draft_Compuestos_234726039-image1.png|54px]] </span>
-|  style="vertical-align: top;"|
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-|  style="border-top: 1pt solid black;border-bottom: 1pt solid black;vertical-align: top;"|<span style="text-align: center; font-size: 75%;">Historia del artículo:</span>
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-<span id='_GoBack'></span><span style="text-align: center; font-size: 75%;">Recibido 6 de Juny 2019</span>
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-<span style="text-align: center; font-size: 75%;">En la versión revisada 15 de Junio 2019</span>
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-<span style="text-align: center; font-size: 75%;">Aceptado 5 de Julio 2019</span>
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-<span style="text-align: center; font-size: 75%;">Accesible online 15 de octubre 2019</span>
-|  rowspan='4' style="vertical-align: top;"|<span style="text-align: center; font-size: 75%;">En este trabajo se han desarrollado diferentes aerogeles con baja flamabilidad basados en la combinación de biopolimeros renovables y montmorillonta (MMT). Los compuestos fueron hechos usando agua como solvente y siguiendo un proceso de liofilización. Los compuestos se formaron agregando capas de los precursores de gel creados previamente a un aerogel basado en alcohol polivinílico / MMT. Para hacer los aerogeles se siguieron dos proceso</span><span style="text-align: center; font-size: 75%;">s sencillos en uno o dos etapas, comparando las propiedades resultantes de los diferentes sistemas de procesamiento. En términos de adhesión entre capas, ésta fue similar e independiente del proceso seguido.</span>
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-<span style="text-align: center; font-size: 75%;">Con el objetivo de mejorar las propiedades mecánicas, se indujo la reticulación química de la base con alcohol polivinílico antes de la liofilización, sumergiendo el material en una solución de borato de sodio. Se encontró que la respuesta mecánica bajo compresión mejoró con respecto a los sistemas no reticulados. Se fabricó un compuesto altamente retardante de la llama mediante la superposicion de una capa de aerogel con alginato/MMT como el sistema más prometedor </span><span style="text-align: center; font-size: 75%;">de protección a fuego en la capa externa. </span>
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-|  style="border-top: 1pt solid black;vertical-align: top;"|<span style="text-align: center; font-size: 75%;">Palabras clave:</span>
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-<span style="text-align: center; font-size: 75%;">Bio-basados</span>
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-<span style="text-align: center; font-size: 75%;">Aerogel</span>
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-<span style="text-align: center; font-size: 75%;">Multicapa</span>
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-<span style="text-align: center; font-size: 75%;">Compuestos</span>
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-<span style="text-align: center; font-size: 75%;">Resistencia al fuego</span>
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-|  style="border-top: 1pt solid black;vertical-align: top;"|
-|-
-|  colspan='2'  style="vertical-align: top;"|<big>Multilayered, bio-based polymer/clay aerogel composites</big>
-|-
-|  style="border-bottom: 1pt solid black;vertical-align: top;"|<span style="text-align: center; font-size: 75%;"> [[Image:Draft_Compuestos_234726039-image2.png|54px]] </span>
-|  style="vertical-align: top;"|
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-|  style="border-top: 1pt solid black;border-bottom: 1pt solid black;vertical-align: top;"|<span style="text-align: center; font-size: 75%;">Keywords:</span>
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-<span style="text-align: center; font-size: 75%;">Bio-based</span>
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-<span style="text-align: center; font-size: 75%;">Aerogel</span>
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-<span style="text-align: center; font-size: 75%;">Multilayer</span>
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-<span style="text-align: center; font-size: 75%;">Composites</span>
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-<span style="text-align: center; font-size: 75%;">Fire resistance</span>
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-−
-|  rowspan='2' style="vertical-align: top;"|<span style="text-align: center; font-size: 75%;">Low flammable foam-like materials based on renewable bio-based polymers and sodium montmorillonite clay (MMT) were created using water as a solvent and following a simple freeze-drying process. Composites were formed by adding layers of the previously created gel precursors to a Polyvinyl alcohol / MMT based aerogel. A multi-step and a one-pot processes were followed to make the multi-layered aerogels, and the resultant properties of the different processing systems were compared. </span><span style="text-align: center; font-size: 75%;">Similar adhesion between layers was observed in both processes although the multi-step required a longer manufacturing time.</span>
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-<span style="text-align: center; font-size: 75%;">With the aim of improving the mechanical properties, chemical crosslinking of the Polyvinyl alcohol base was induced prior to lyophilization by immersing the material in a sodium borate solution. It was found that the mechanical response under compression was enhanced in regards to the non-crosslinked systems. A highly retardant composite material was fabricated by superposing an alginate/MMT at the external layer as the most promising system for fire protection</span>
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-|  style="border-top: 1pt solid black;vertical-align: top;"|
-|}
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 ==1 Introduction==
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