Preparation of a thermal insulating material using electrophoretic deposition of silica particles

2007 ◽  
Vol 137 (1-3) ◽  
pp. 225-231 ◽  
Author(s):  
R. Tomasi ◽  
D. Sireude ◽  
R. Marchand ◽  
Y. Scudeller ◽  
P. Guillemet
Keyword(s):  
Electrophoretic Deposition ◽  
Silica Particles ◽  
Insulating Material ◽  
Thermal Insulating

A Novel Poly(Ionic Liquid) as the Thermal Insulating Material

2020 ◽  
Vol 13 (3) ◽  
pp. 241-247
Author(s):  
Wenxin Wei ◽  
Guifeng Ma ◽  
Hongtao Wang ◽  
Jun Li
Keyword(s):  
Thermal Conductivity ◽  
Ionic Liquid ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Flame Resistance ◽  
Insulating Material ◽  
Low Thermal Conductivity ◽  
Thermal Insulating ◽  
Poly Ionic Liquid

Objective: A new poly(ionic liquid)(PIL), poly(p-vinylbenzyltriphenylphosphine hexafluorophosphate) (P[VBTPP][PF6]), was synthesized by quaternization, anion exchange reaction, and free radical polymerization. Then a series of the PIL were synthesized at different conditions. Methods: The specific heat capacity, glass-transition temperature and melting temperature of the synthesized PILs were measured by differential scanning calorimeter. The thermal conductivities of the PILs were measured by the laser flash analysis method. Results: Results showed that, under optimized synthesis conditions, P[VBTPP][PF6] as the thermal insulator had a high glass-transition temperature of 210.1°C, high melting point of 421.6°C, and a low thermal conductivity of 0.0920 W m-1 K-1 at 40.0°C (it was 0.105 W m-1 K-1 even at 180.0°C). The foamed sample exhibited much low thermal conductivity λ=0.0340 W m-1 K-1 at room temperature, which was comparable to a commercial polyurethane thermal insulating material although the latter had a much lower density. Conclusion: In addition, mixing the P[VBTPP][PF6] sample into polypropylene could obviously increase the Oxygen Index, revealing its efficient flame resistance. Therefore, P[VBTPP][PF6] is a potential thermal insulating material.

Coal tar pitch based carbon foam for thermal insulating material

2016 ◽  
Vol 169 ◽  
pp. 95-98 ◽  
Author(s):  
Yanli Wang ◽  
Ziguo He ◽  
Liang Zhan ◽  
Xiang Liu
Keyword(s):  
Coal Tar ◽  
Carbon Foam ◽  
Coal Tar Pitch ◽  
Insulating Material ◽  
Thermal Insulating

Superior hydrophobicity of nano-SiO2 porous thermal insulating material treated by oil-in-water microemulsion

2021 ◽  
Author(s):  
Xiaolong Song ◽  
Renli Fu ◽  
Houbao Liu ◽  
Zeya Huang ◽  
Xinqing Su ◽  
...  
Keyword(s):  
Insulating Material ◽  
Nano Sio2 ◽  
Thermal Insulating ◽  
Oil In Water

Investigation of mechanical and thermal insulating properties of wool fibres in epoxy composites

2020 ◽  
pp. 096739112097138
Author(s):  
Dionisis Semitekolos ◽  
Katerina Pardou ◽  
Pantelitsa Georgiou ◽  
Panagiota Koutsouli ◽  
Iosif Bizelis ◽  
...  
Keyword(s):  
Epoxy Composites ◽  
Wool Fibre ◽  
Hot Press ◽  
Insulating Material ◽  
Thermal Insulating ◽  
Coefficient Of Thermal Conductivity ◽  
Strength Tests ◽  
Press Method ◽  
Insulating Properties ◽  
Sheep Wool

The purpose of this study is to investigate a novel exploitation approach for a mass livestock byproduct, namely sheep wool fibres. In order to fulfil this aim, wool fibre toughened epoxy composites with an amount of 2.4, 4.1 and 5.7 phr were prepared via the hot press method. Initially, mechanical assessment of the composites was executed, in order to evaluate their mechanical integrity. The flexural and shear strength tests showed that the wool fibre-epoxy composites maintain their mechanical properties for up to 4.1 phr and no degradation is detected. Subsequently, the thermal properties were tested. Thermogravimetric analysis proved that adding wool fibres as toughening agent in epoxy matrix can prolong the endurance of the material while reaching high temperatures. The coefficient of thermal conductivity decreased by 30% compared to neat epoxy, something that is also confirmed through simulation, proving that wool fibre-epoxy composites can be considered as a promising insulating material, while exploiting a natural waste.

New Thermal Insulating Material Based on Geocement

2013 ◽  
Vol 838-841 ◽  
pp. 183-187 ◽  
Author(s):  
Vít Petranek ◽  
Sergii Guzii ◽  
Pavel Krivenko ◽  
Konstantinos Sotiriadis ◽  
Anastasiia Kravchenko
Keyword(s):  
Thermal Conductivity ◽  
Heat Flow ◽  
External Heat ◽  
Great Scientist ◽  
Insulating Material ◽  
Average Temperature ◽  
Thermal Insulating ◽  
The Matrix ◽  
Birthday Anniversary ◽  
Alkali Activated

A new thermal insulating material was developed on the basis of a geocement, formulated as Na2OAl2O36SiO220H2O. Ground limestone and aluminosilicate pellets were used as fillers for its production (composition: geocement 64.29 wt. [%]; fillers 35.71 wt. [%]). This material, which is applied having a thickness of 3.0-4.5 mm, swells when it is exposed to an external heat flow of 1273 K average temperature. Swelling is due to the matrix phases and filler dehydration, which include heulandite, ussingite, sodium zeolite and other phases. As a result, a finely porous glassy aluminosilicate frame of jadeite-albite composition is formed, which is characterized by low thermal conductivity (0.09-0.175 Wm-1K-1). The developed material can be used to protect and to insulate wooden, metal and concrete surfaces from an one-sided heat source.The paper is dedicated to the great scientist of the XXI century in the field of alkali-activated cements and materials based on them, Pavlo Kryvenko, in honor of his 75thbirthday anniversary.

scholarly journals Polystyrene concrete as the structural thermal insulating material

2017 ◽  
Vol 4 (10) ◽  
pp. 40-45
Author(s):  
Makhmud Kharun ◽  
◽  
Alexander P. Svintsov ◽  
Keyword(s):  
Insulating Material ◽  
Thermal Insulating

scholarly journals Analysis of the Thermal Insulation and Fire-Resistance Capacity of Particleboards Made from Vine (Vitis vinifera L.) Prunings

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1147
Author(s):  
Manuel Ferrandez-Villena ◽  
Clara Eugenia Ferrandez-Garcia ◽  
Teresa Garcia-Ortuño ◽  
Antonio Ferrandez-Garcia ◽  
Maria Teresa Ferrandez-Garcia
Keyword(s):  
Vitis Vinifera ◽  
Fire Resistance ◽  
Plant Biomass ◽  
Agricultural Waste ◽  
Urea Formaldehyde ◽  
Experimental Tests ◽  
Vitis Vinifera L ◽  
Insulating Material ◽  
Thermal Insulating ◽  
Dry Conditions

In Europe, vine (Vitis vinifera L.) prunings are one of the most abundant types of agricultural waste. It is, therefore, essential to organize the removal of vine waste from the fields in order to prevent the spread of fires, pests, or diseases. Using plant biomass in buildings will help achieve greater energy efficiency and cause less environmental pollution. The objectives of this work were to minimize burning of agricultural waste, reduce the use of natural wood, and obtain a product by using vine pruning waste to manufacture particleboards, assessing their use as an insulating material and their fire-resistance qualities. Eight types of boards were manufactured with vine prunings (two particle sizes, two times, and two pressures), using 9% by weight of urea-formaldehyde as a bonding resin. Experimental tests were conducted to determine the physical, mechanical, thermal, and fire-resistance properties. In general, the panels manufactured performed well as a thermal insulating material with a conductivity between 0.0642 and 0.0676 W/m·K and a classification of Bd0 according to the European standards on fire resistance; some of them may be used to manufacture furniture, interior décor, and load-bearing panels in dry conditions.

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